Entries |
Document | Title | Date |
20080212093 | PARTICLE MONITOR SYSTEM AND SUBSTRATE PROCESSING APPARATUS - A particle monitor system that can detect fine particles in a substrate processing apparatus. The substrate processing apparatus has a chamber in which a substrate is housed and subjected to processing, a dry pump that exhausts gas out of the chamber, and a bypass line that communicates the chamber and the dry pump together. The particle monitor system has a laser light oscillator that irradiates laser light toward a space in which the particles may be present, and a laser power measurement device that is disposed on an optical path of the laser light having passed through the space and measures the energy of the laser light. | 09-04-2008 |
20080212094 | DETECTION SYSTEM AND METHOD FOR AEROSOL DELIVERY - An apparatus comprises a detector, a pressure sensor and a processor. The detector is operable to detect light that is scattered by an aerosol that is associated with a pressure. The pressure sensor is operable to measure the pressure. The processor is coupled to the detector and to the pressure sensor, and is configured to receive at least a signal from the detector and the pressure sensor. The processor is further configured to use the received signals to calculate a volume of the first aerosol, and to output an output signal associated with the calculated volume. The various measurements can be repeated and compared, and the output signal can be a feedback signal for metering subsequent amounts of the aerosol, based on the comparison. | 09-04-2008 |
20080239314 | Substrate-like particle sensor - A substrate-like particle sensor includes a substrate-like base portion and an electronics enclosure disposed on the substrate-like base portion. A power source is located within the electronics enclosure. A controller is operably coupled to the power source. A particle sensor is operably coupled to the controller and provides an indication to the controller of at least one particle present near the particle sensor. | 10-02-2008 |
20080252887 | IMAGE FORMING APPARATUS FOR FORMING IMAGE ON RECORD MEDIUM - A particle detecting device including a light source light reflector to reflect a laser light to make it intersect an observed light path of a light detector plural times at different positions, or a scattered light reflector to reflect the observed light path of the light detector to make it intersect the laser light plural times at different positions is installed on a side of a printed surface of a record medium in the inside of an image forming apparatus. | 10-16-2008 |
20080266558 | Scattered Light Smoke Detector - The smoke detector contains an optical measuring chamber, having a sensor arrangement with at least one light source and one light receiver, and a labyrinth system with screens arranged on the periphery of the measuring chamber. The light source and the light receiver are each arranged in a housing. The housings have an elongated shape and a small window opening The at least one light source and light receiver are arranged in the rear part of their housings, so that between the window openings of the housings and the light-penetrated optical surfaces of the at least one light source and/or the lens of the light receiver a relatively large gap is formed. This gap is preferably greater than the diameter of the above-mentioned optical surfaces, or of the lens. In the measuring chamber between the light exit and entry side of the housings and the screens opposite them, a compact, open scattering space is formed. | 10-30-2008 |
20080278726 | Device Having an Optical Part for Analyzing Micro Particles - Disclosed is a micro particle analyzing device illuminating light to fluid including micro particles, reading the lights emitted from the micro particles at a signal processing reading section and thus analyzing the micro particles. The device comprises a light source section emitting light which will be illuminated to the fluid; a lens regulating an amount and a focal distance of the light emitted from the light source; and a concave mirror condensing light emitted from the micro particle to reflect it to the reading section wherein the concave mirror is formed with a hole so that the light of the light source section having passed through the lens can pass through the concave mirror. When analyzing the micro particles using the analyzing device according to the invention, the amounts of lights emitted from the micro particles according to up-and-down positions of the micro particles are not different. | 11-13-2008 |
20080291446 | OPTICAL SENSING DEVICE - An optical sensing system and method are disclosed. The optical sensing system includes one or more bus waveguides. A first bus waveguide includes an input port that is in optical communication with a light source. The system further includes a microresonator optically coupled to the bus waveguides and an optical scattering center configured for alteration of a strength of optical coupling between the optical scattering center and the microresonator. In addition, the system includes a detector in optical communication one of the bus waveguides or the microresonator. | 11-27-2008 |
20080297798 | Apparatus and Method to Monitor Particulates - An apparatus, method and system for detecting and quantizing levels of specific airborne particle contamination in areas to be monitored for a plurality of users | 12-04-2008 |
20090002705 | SYSTEM METHOD AND APPARATUS FOR OPTICAL DIRECTIONAL DETERMINATION - A method for measuring the direction and velocity of a target in a measurement volume in a laser Doppler velocimetry system includes selecting a discrete number of grating positions for an electrically switchable grating, placing the electrically switchable grating in a light path of a laser source. The laser source outputs a laser beam along the light path. The method further includes switching the electrically switchable grating sequentially through the discrete number of grating positions at a grating frequency to generate diffracted light beams from the laser, directing the diffracted light beams through a lens, focusing the diffracted light beams on a measurement volume, passing a target through the measurement volume in a target direction at a target velocity and receiving scattered light in a detector and calculating the power spectrum of light intensity fluctuations. The power spectrum includes a maximum peak. The maximum peak occurs at a frequency shifted from the grating frequency an amount corresponding to the target velocity and in a direction corresponding to the target direction. A laser Doppler velocimetry system for measuring the direction and velocity of a target in a measurement volume is also disclosed. | 01-01-2009 |
20090027670 | Linear optical loss probe - An optical loss probe utilized as a bioreactor process monitor manifesting a substantially linear response in optical loss vs. concentration of scatterers present in an aqueous medium in the range of between about 1 AU and about 4.0 AU, said probe comprising:
| 01-29-2009 |
20090033935 | MAGNETO-OPTIC BIOSENSOR USING BIO-FUNCTIONALIZED MAGNETIZED NANOPARTICLES - A biosensor utilizing bio-functionalized magnetic nanoparticles is provided. An external magnetic field is applied to a suspension of magnetic nanoparticles. A linearly polarized incident light is applied to the suspension of magnetic nanoparticles. A photocurrent from polarized light scattering by bio-functionalized magnetic nanoparticles in liquid is detected. The magneto-optic sensing technique is applied to a micro-fluidic channel for rapid and sensitive detection with a small sample amount, and subsequent magnetic separation for detoxification. This technique is used for the detection of Brownian relaxation with time sweep as well as frequency sweep. The magneto-optical sensor enables rapidly detecting changes in local dynamic properties of the magnetic nanoparticles in liquids and magnetic modulation of ferromagnetic particles in liquid provides increased signal sensitivity. | 02-05-2009 |
20090073440 | System and method for detecting surface features on a semiconductor workpiece surface - A method and system for inspecting a surface of a semiconductor workpiece comprises providing a surface inspection system and using the surface inspection apparatus to cause laser light to impinge upon a test location on the workpiece surface and thereby cause the laser light to emerge from the surface as returned light comprising at least one of reflected light and scatter light; collecting the returned light and generating a signal from the returned and collected light, the signal comprising a signal value representative of a characteristic of the workpiece surface at the test location; providing a plurality of threshold candidates and causing the surface inspection system to select a threshold from among the plurality of threshold candidates; comparing the threshold to the signal value to obtain a difference value; using the difference value to assess the characteristic of the workpiece surface at the test location; and using the surface inspection system to automatically cause the method to be repeated for a plurality of test locations on the workpiece surface. | 03-19-2009 |
20090091757 | System and Method for Detecting and Analyzing Particles Utilizing Online Light Scattering and Imaging Techniques - A chromatographic system that includes a light source and an imaging and analysis system for detecting particle size and analyzing other characteristics of particles in the effluent of a filtration column while filtration is ongoing. The effluent is directed into a guiding tube having a flow axis. Coherent light from the light source is shone into the guiding tube along the flow axis, thereby illuminating particles in the effluent within the guiding tube. An imaging device is used to capture images of the portion of the light scattered by the particles. The image signals are analyzed and used to provide information regarding particle size and other characteristics of the particles in the effluent scattering the light. | 04-09-2009 |
20090103090 | SENSING APPARATUS - The sensing apparatus includes a measuring light emission device, a waveguide member including a sensing surface modified by a surface modification substance, a detection device and an analyzer. The measuring light of a predetermined polarized state is emitted from the emission device so that the measuring light is totally reflected on the sensing surface of the waveguide member holding target substances labeled by fine metal particles to illuminate the particles by evanescent light generated near the sensing surface. The amount of evanescent light scattered by the fine metal particles is detected by the detection device. The measuring light emission device, the waveguide member and the analyzer are included in an optical waveguide system which sets a polarized state of scattered light generated when no target substance is present on the sensing surface in a crossed nicol relation to the analyzer. | 04-23-2009 |
20090116011 | Optical Arrangement for a Flow Cytometer - An optical system suited to high sensitivity measurement of small particles as they travel through a point of detection in a flow cell. The system consists of components along two optical axes, preferably but not necessarily, at approximately the Brewster angle to one another. The first axis incorporates a flow cell, high numerical aperture light collection lens, spatial filtering and optical detectors. The second axis incorporates a radiation source (typically a laser or arc-lamp) and beam shaping optics. The two axes are positioned at an angle sufficient to enable collection of small angle light scatter near the edge of the collection lens and to allow collection of medium and large angle light scatter through the centre and opposite side of the collection lens. The invention enables spatial filtering in the image plane of the collection lens to exclude radiation from the dominating sources of unwanted scattering in the flow cell, and also allows the use of a high numerical aperture lens to collect radiation scattered and fluoresced by the sample particles. | 05-07-2009 |
20090128811 | FULL HEMISPHERE BI-DIRECTIONAL REFLECTANCE DISTRIBUTION FUNCTION INSTRUMENT - According to an embodiment there is provided a bi-directional reflectance distribution function (BRDF) instrument, including an enclosure having a plurality of sides. A first side has a relatively high reflectivity substantially non-specular interior surface, while each of the remaining sides has a relatively low reflectivity interior surface. A bottom of the enclosure has a relatively low reflectivity interior surface. A viewport is formed in one of the plurality of sides or the bottom, at least one exit port is formed in at least one of the sides, and at least one entrance port is formed in at least of the sides. | 05-21-2009 |
20090128812 | Method of reducing peak broadening in analytical measurements - A method of reducing peak width in flow-through analytical instrumentation measurements, comprising introducing a sample into an analytical instrument; recording the time required for a plurality of individual analytes within the sample to travel a known distance between a first point and a second point within the analytical instrument to produce a plurality of travel times; recording the time required for a plurality of individual analytes within a sample to travel a known distance between a first point and a second point to produce a plurality of travel times; dividing the travel times into a plurality of groups comprising a fixed number of travel times; assigning a ranking to the travel times within a group; selecting from each group at least one travel time to produce a set of selected travel times; and producing from the set of selected travel times an output signal in the form of a peak. | 05-21-2009 |
20090180116 | Modular dust measurement - A modular dust measuring device ( | 07-16-2009 |
20090190129 | APPARATUS FOR READING SIGNALS GENERATED FROM RESONANCE LIGHT SCATTERED PARTICLE LABELS - Embodiments of the present invention include a control and analysis system, a signal generation and detection apparatus, or reader for capturing, processing and analyzing images of samples having resonance light scattering (RLS) particle labels. An analyzer/reader includes an illumination system having a unique shutter/aperture assembly for delivering precise patterns of light to a sample, a computer controlled X-Y stage, and a detection system comprising a CCD camera to allow separation and analysis of detected light that contains information from gold and/or silver RLS labels. Alternative embodiments include linear scanning apparatus and simplified apparatus for low density samples. | 07-30-2009 |
20090201501 | Optical System for a Flow Cytometer - The preferred embodiments of the invention is an optical system for a flow cytometer including a flow channel with an interrogation zone, and an illumination source that impinges the flow channel in the interrogation zone from a particular direction. The optical system preferably includes a lens system and a detection system. The lens system preferably includes multiple lens surfaces arranged around the flow channel and adapted to collect and collimate light from the interrogation zone. The detection system preferably includes multiple detectors adapted to detect light from the lens system. Each detector preferably includes a local filter that independently filters for specific wavelengths. Thus, the user may easily swap the filters in any order to achieve the same detection parameters. | 08-13-2009 |
20090213373 | Detection System and Method for Aerosol Delivery - An apparatus comprises a detector, a pressure sensor and a processor. The detector is operable to detect light that is scattered by an aerosol that is associated with a pressure. The pressure sensor is operable to measure the pressure. The processor is coupled to the detector and to the pressure sensor, and is configured to receive at least a signal from the detector and the pressure sensor. The processor is further configured to use the received signals to calculate a volume of the first aerosol, and to output an output signal associated with the calculated volume. The various measurements can be repeated and compared, and the output signal can be a feedback signal for metering subsequent amounts of the aerosol, based on the comparison. | 08-27-2009 |
20090237659 | High Throughput Particle Counter - The particle counter is equipped with a scroll pump adapted to create a gas flow through the measurement chamber with a maximum flow rate of at least 50 liters per minute. Light scattered from particles entrained in the gas flow is collected by an optical system. The product of the smallest diameter of the minimum aperture and the magnification amounts to at least 2 mm. Especially preferred is a minimum aperture with a smallest diameter of at least 2.5 mm and a magnification of at least 1.5. The optical system images a projection of the measurement volume created by intersection of the gas flow and the beam of light onto the active area of the sensor module. The sensor module | 09-24-2009 |
20090257057 | COMMON-PATH INTERFEROMETER RENDERING AMPLITUDE AND PHASE OF SCATTERED LIGHT - A beam of coherent laser light with linear polarization oriented at 45 degrees to vertical is expanded, and passes through a quarter-wave plate with the fast axis oriented vertically, creating circularly polarized light. The light then passes through a non-polarizing 50/50 beamsplitter. A partial reflector then collinearly reflects a portion of the beam, which is used as the reference beam. The transmitted light passes through a linear polarizer oriented at 45 degrees to vertical, and is focused via a lens onto the sample of interest. Light scattered from this region is re-collimated by the lens and the directed through the linear 45 degree polarizer and through the partial reflector, where it recombines with the reference beam. One use of the invention is to detect microparticles in water. | 10-15-2009 |
20090268201 | INTEGRATED MOLD DETECTOR - A handheld device for detecting the presence of biological and chemical airborne particles. The device collects a sample by drawing air in through a filter that allows air t pass through but collects particles in the air that are larger than the pore size of the filter, which may be selected to meet the user's needs. The filter is then subjected to an optical detection assembly that utilizes UV light directed on the filter and detects visible light emitted by any collected particles via a photomultiplier tube. Prior to collecting a sample, the filter is subjected to the optical detection assembly to generate a baseline reading, which is compared with the test results of the collected sample to determine the presence or absence of particles, such as mold. | 10-29-2009 |
20090268202 | Particle Counter with Laser Diode - A liquid particle counter for optically detecting an unconstrained particle suspended in a flowing liquid includes a sample chamber having a liquid inlet and a liquid outlet; a laser diode module producing a symmetrically collimated laser beam; a beam shaping optical system directing the laser beam at the sample chamber; and an optical detector located to detect light scattered by the particle in the sample chamber, the detector producing an electric signal characteristic of a parameter of the particle. The laser beam has an energy of a watt or more and passed through an aperture in a black glass aperture element in the sample chamber. The black glass aperture element removes diffracted and stray light from the beam without damage to the sample chamber. | 10-29-2009 |
20090279087 | METHOD AND SYSTEM FOR TESTING A FUEL INJECTOR - Disclosed is both an apparatus and method for quantifying an injection event of a fuel injector, including both multiple pulse and single pulse injection events. Typically, the fuel injector is a common rail injector. The apparatus includes a pressure chamber for isolating a portion of the injection pressure for reducing pressure waves and reflections which can create “noise” in the detection of an injection pressure. The invention further includes determining the precise start and end times of injection using cavitation created by the injection event. | 11-12-2009 |
20090290156 | Spatial light interference microscopy and fourier transform light scattering for cell and tissue characterization - Methods and apparatus for rendering quantitative phase maps across and through transparent samples. A broadband source is employed in conjunction with an objective, Fourier optics, and a programmable two-dimensional phase modulator to obtain amplitude and phase information in an image plane. Methods, referred to as Fourier transform light scattering (FTLS), measure the angular scattering spectrum of the sample. FTLS combines optical microscopy and light scattering for studying inhomogeneous and dynamic media. FTLS relies on quantifying the optical phase and amplitude associated with a coherent image field and propagating it numerically to the scattering plane. Full angular information, limited only by the microscope objective, is obtained from extremely weak scatterers, such as a single micron-sized particle. A flow cytometer may employ FTLS sorting. | 11-26-2009 |
20090316151 | DYNAMIC CHARACTERIZATION OF PARTICLES WITH FLOW CYTOMETRY - Flow cytometry concepts are modified to enable dynamic characterizations of particles to be obtained using optical scattering data. Particles in flow will be introduced into a sample volume. Light scattered by a particle in the sample volume is collected and analyzed. What differentiates the concepts disclosed herein from conventional flow cytometry is the use of an acoustic source that is disposed to direct acoustic energy into the sample volume. As the particle passes through the sample volume, it responds to the acoustic energy, causing changes in the light scattered by the particle. Those changes, which are not measured during conventional flow cytometry, can be analyzed to determine additional physical properties of the particle. | 12-24-2009 |
20090323063 | APPARATUS AND METHOD FOR CHARACTERIZING AN INTERFACIAL PROPERTY OF A DISPERSION - An improvement in a PVT apparatus, which improvement includes a fluid path model having a fluid path and a sampling section, wherein the depth of the fluid path within the sampling section is substantially uniform and is less than about 100 μm. The apparatus may be configured to provide a micron-scale slim tube which may be used in a manner similar to a conventional slim tube apparatus. | 12-31-2009 |
20100002229 | Light Scattering Detector - The invention concerns high sensitivity light scattering detection and its application to evaporative light scattering detection in liquid chromatography. The exemplary embodiment includes a detection cell to accept particles suspended in a gas stream and permit a polarized light beam to pass through a trajectory of the particles and gas stream. A sample light detector is disposed to detect light scattered in the detection cell. A light trap accepts the polarized beam after it passes through the detection cell. The light trap includes an elongated housing through which the polarized beam passes, and light absorptive material within the elongated housing. An absorptive filter is aligned such that the angle of incidence of the light beam upon the filter approximates Brewster's angle and the electric field vector of the beam is aligned with the plane of incidence between the beam and the filter. Other embodiments of the invention provide increased light collection. Embodiments of the invention include temperature-controlled entrance and exit ports that control particle trajectory. Embodiments of the invention include a reference cell disposed between a detection cell and a light trap, and the reference cell includes lensing and a spherical mirror to direct light toward a reference light detector. The reference light detector provides a reference signal that may be used with noise cancellation circuitry, operating in either voltage or current mode, to reduce light source noise in the sample signal. | 01-07-2010 |
20100007880 | Optical Apparatus - Various optical apparatus, in particular embodiments, may provide a source of parallel light ( | 01-14-2010 |
20100020322 | ASSEMBLY COMPRISING A PORTABLE DEVICE HAVING FLUID-FILLABLE CONTAINER AND A HOLDER - The invention provides an assembly comprising a holder ( | 01-28-2010 |
20100027007 | SYSTEMS AND METHODS FOR A MULTIPLE ANGLE LIGHT SCATTERING (MALS) INSTRUMENT HAVING TWO-DIMENSIONAL DETECTOR ARRAY - A particle detection system uses a reflective optic comprising a curved surface to detect high angle scattered light generated by a particle in a liquid medium, when a laser beam is incident on the particle. When the particles transit the laser beam, light is scattered in all directions and is described by MIE scattering theory for particles about the size of the wavelength of light and larger or Rayleigh Scattering when the particles are smaller than the wavelength of light. By using the reflective optic, the scattered light can be detected over angles that are greater than normally obtainable. | 02-04-2010 |
20100045982 | PARTICLE COUNTER AND PARTICLE COUNTING DEVICE HAVING PARTICLE COUNTER, AND PARTICLE COUNTING SYSTEM AND ITS USE METHOD - A particle counting device | 02-25-2010 |
20100067006 | METHOD OF CHARACTERISING THE ANISOTROPY OF A SCATTERING MEDIUM AND DEVICE FOR IMPLEMENTING SUCH A METHOD - The invention relates to a method of characterizing a scattering medium. According to the invention, the processing on the electromagnetic radiation scattered by the scattering medium is carried out for an unpolarized signal. In this way, only the anisotrophic incoherent transport of radiation induced by the scattering medium is obtained in the characterization according to the invention. According to the invention, the data representative of the angular variation of the first image representing the unpolarized scattered radiation is representative of the purely isotrophic part of the scattering. Having obtained this purely isotrophic part, it is then possible, according to the invention, to calculate a second image representative of the non-isotrophic part of the scattering. This non-isotrophic part represents the anisotrophic transport of radiation induced by the medium at the moment of scattering. | 03-18-2010 |
20100079756 | DEVICE AND METHOD FOR INVESTIGATING ANALYTES IN LIQUID SUSPENSION OR SOLUTION - An optical detection device is provided for analyzing analytes in a liquid suspension or solution that can detect and process a large number of wavelengths of incident and fluorescent light simultaneously, which is small in size and can be easily adapted to different investigation requirements. The optical detection device may include a light supplying device, an analyte handling device, a light directing device, and a detector integrated on planar substrate devices, respectively. A plurality of optical waveguides are integrated in the substrate devices to direct light emitted by the light supplying device through the different sections of the optical detector to the detector. The analyte handling device may include an analyte channel for the liquid flow of the analyte suspension or solution and an analyte sorting device comprising several sorting channels. | 04-01-2010 |
20100085569 | APPARATUS FOR HIGH-ACCURACY FIBER COUNTING IN AIR - The present disclosure has an apparatus for detecting fibers in a gas flowing along a passageway. A laser beam is provided at one end of the passageway and the beam is directed along a length of the passageway through which the gas flows. An electrode system, as disclosed, a quadrupole electrode system is mounted along the passageway to cause fibers carried in the gas to oscillate in a detection zone. A photo detector is positioned laterally of the passageway and detects light scattered by the oscillating fibers and projected through an opening in the passageway to provide an output signal that is a function of the light scattered by the fibers in the detection zone. | 04-08-2010 |
20100134797 | PARTICLE COUNTER - The present invention provides a particle counter capable of sensitively determining the contamination level of a light transmission window. The particle counter according to the present invention includes: a light source | 06-03-2010 |
20100141945 | METHOD OF MEASURING PROPERTIES OF PARTICLES AND CORRESPONDING APPARATUS - A method of measuring properties of particles comprises the steps of generating a beam of radiation (IW); illuminating with the beam (IW) an observation region (MR) which is transited by a particle (B), a portion of the beam (IW) giving rise to radiation (SW) which is scattered by scattering interaction with the particle (B), and another portion (TW) being transmitted substantially undisturbed through the observation region (MR); and detecting, in a detection plane (M), a plurality of radiation intensity values which are determined by the interference between the scattered radiation (SW) and the transmitted radiation (TW). The detection of the radiation intensity values in the detection plane (M) is carried out according to a time sequence of acquisitions corresponding to successive transit positions of the particle through the observation region (MR). On the basis of the time sequence of acquisitions, the trend of a parameter of asymmetry of the distribution of the plurality of radiation intensity values with respect to the optical axis (z), due to the successive transit positions of the particle (B), is determined as a function of time. Depending on the trend of the parameter of asymmetry determined as a function of time, the trends of phase delay and amplitude of the scattered radiation (SW) with respect to the transmitted radiation (TW) are determined as a function of time, and the properties of the particle (B) are determined on the basis of the trends of the phase delay and amplitude of the scattered radiation (SW) as a function of time. | 06-10-2010 |
20100141946 | METHOD AND APPARATUS FOR DETERMINING THE AMOUNT OF SCATTERED LIGHT IN A MACHINE VISION SYSTEM - The present invention relates to a method and an apparatus for determining the amount of light scattered in an object in a machine vision system comprising: a light source illuminating said object with incident light having a limited extension in at least one direction; and, an imaging sensor detecting light emanating from said object, wherein said emanated light is reflected light (R) on the surface of said object and light scattered (S) in said object, said detected light is resulting in at least one intensity distribution curve on said imaging sensor having a peak where said reflected light (R) is detected on said imaging sensor. A width (w) of said at least one intensity distribution curve around said peak is measured, whereby said measured width (w) indicates the amount of light scattered (S) in said object. | 06-10-2010 |
20100201984 | IN-LINE HIGH PRESSURE PARTICLE SENSING SYSTEM - An in-line particle sensor includes a sensor body, an illumination source, an illumination detector and communication electronics. The sensor body has an electronics enclosure and a flowthrough portion with a fluid inlet, a fluid outlet, a sample interaction region and a fluid path extending through the sample interaction region from the fluid inlet to the fluid outlet. The illumination source is disposed to provide light through at least a portion of the sample interaction region. The illumination detector is disposed to detect illumination variation resulting from illumination impinging at least one particle in the flow path in the sample interaction region. The communication electronics are operably coupled to the illumination detector to provide an indication of the at least one particle sensed by the illumination detector. The sample interaction region is configured to withstand high operating pressure. | 08-12-2010 |
20100225913 | METHODS AND APPARATUS FOR DETERMINING CHARACTERISTICS OF PARTICLES - An instrument for measuring characteristics of a particle sample by counting and classifying particles into selected ranges of particle characteristics. The particle concentration is reduced to the level where the probability of measuring scattering from multiple particles of interest at one time is reduced to an acceptable level. A light beam is projected through a sample space, through which the particles flow. As each particle passes through the beam, it scatters, absorbs, and transmits different amounts of the light, depending upon the particle characteristics. So both the decrease in the beam intensity, due to light removal by the particle, and light scattered by the particle, may be used to determine the particle characteristics, to classify the particle and count it in a certain range of particle characteristics. | 09-09-2010 |
20100253945 | PARTICLE CHARACTERIZATION - In one general aspect, a method of measuring characteristics of particles in a liquid sample is disclosed. The method includes suspending the liquid sample in a tube. The suspended liquid sample is illuminated along an illumination axis, and at least a portion of the light is detected along a first detection axis after it is scattered by the particles in the suspended liquid sample. The illumination axis and the detection axis are oriented at an angle with respect to each other. | 10-07-2010 |
20100259753 | Drop Detection - In one embodiment, a drop detection method includes: moving a light source along a first side of the drop zone to illuminate drops passing through a drop zone; and, without blocking any part of the drop zone, detecting light scattered off the drops as the drops pass through the drop zone. In another embodiment, a drop detector includes: a light source on a first side of the drop zone for illuminating drops passing through a drop zone; a light detector on the first side of the drop zone near the light source and a movable carriage carrying the light source and the light detector. The light detector is exposed to the drop zone for detecting light scattered off drops as the drops pass through the drop zone. The carriage is movable along the first side of the drop zone in a direction transverse to the drop direction. | 10-14-2010 |
20100277734 | DETECTING AND COUNTING BACTERIA SUSPENDED IN BIOLOGICAL FLUIDS - System and method for detecting and counting bacteria suspended in a biological fluid by means of light scattering measurements is provided. In accordance with the method of the invention the level of signal to noise of the measured intensities of light scattered by a sample of the biological fluid is significantly enhanced for forwardly scattered light within a range of scattering angles which are smaller compared to a predefined maximal scattering angle. The system of the invention includes a cuvette adapted to contain a sample of the biological fluid whose sidewalls and windows are suitably constructed and arranged to significantly reduce the level of reflected light obscuring the scattering patterns measured within the range of scattering angles considered. | 11-04-2010 |
20100328663 | Optical Backscatter Probe for Sensing Particulate in a Combustion Gas Stream - A system for sensing particulate in a combustion gas stream is disclosed. The system transmits light into a combustion gas stream, and thereafter detects a portion of the transmitted light as scattered light in an amount corresponding to the amount of particulates in the emissions. Purge gas may be supplied adjacent the light supply and the detector to reduce particles in the emissions from coating or otherwise compromising the transmission of light into the emissions and recovery of scattered light from the emissions. | 12-30-2010 |
20100328664 | METHOD AND APPARATUS FOR LIMITING EFFECTS OF REFRACTION IN CYTOMETRY - A method and apparatus for performing cell cytometry mitigate or eliminate the effects of refraction that result from interfaces between materials having different refractive indices. Solid materials, such as the walls of a flow path, which materials are disposed between a nominal focal point and an objective lens, are formed of a material having a refractive index between 1.30 and 1.40 inclusive. The refractive index of a liquid material, such as an immersion fluid or a fluid carrying, suspending, or bathing an analyte, may be adjusted to have a refractive index closer to that of surrounding solid materials and, in particular, within 0.02 of the refractive index of the surrounding solid materials. | 12-30-2010 |
20110013184 | Optical Method for Determination of the Total Suspended Solids in Jet Fuel - The invention provides a method for the quantitative determination of total suspended solid particles in a liquid. The method includes providing a liquid sample that includes solids suspended therein, illuminating the solids with a light source, collecting light scattered by the solids and correlating the light scattered by the solids with a total solids content | 01-20-2011 |
20110013185 | GEL PARTICLE MEASURING APPARATUS - Provided is a gel particle measuring apparatus for detecting a gel particle production starting point with high sensitivity in the measurement of a target substance in a sample by a gelation reaction. The gel particle measuring apparatus includes a sample cell ( | 01-20-2011 |
20110032522 | System and Method for Measuring Particles in a Sample Stream of a Flow Cytometer or the Like - A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals. | 02-10-2011 |
20110051136 | MEASUREMENT OF PARTICLES IN LIQUID USING REFLECTED LIGHT - An improved cassette for detecting and quantifying particles in a liquid is provided. A sample volume of a liquid is held by a housing with an inlet and an outlet for the liquid. Light is emitted across the sample volume and reflected creating a doubled length of the optical path in the sample volume. The probability of detecting particles is increased and the measurement is improved. The housing reduces noise due to air bubbles and improves sensitivity of detection of particles in the liquid sample. | 03-03-2011 |
20110058167 | PARTICLE DETECTION - A particle detection system ( | 03-10-2011 |
20110069311 | FLOW CYTOMETER AND FLOW CELL FOR THE SAME - An apparatus and a flow cell for the same, which simultaneously fulfill the requirements of: 1) no need of cleansing a liquid sending system for each measurement; 2) enabling a sample liquid after measurement to be collected without being diluted and free from contamination; and 3) the flow cell being inexpensive are provided for a flow cytometer. Provided are an apparatus for measuring a particle in a liquid, the apparatus having a function that, using a flow channel into which a sample liquid containing a particle is introduced, a pair of flow channels into which a sheath liquid is introduced, the pair of the flow channels being arranged on the opposite sides of the flow channel and joined, and a flow channel in which these flow channels are joined and the sample liquid and the sheath liquid on the opposite sides of the sample liquid flow, applies laser light to a particle flowing in a flow channel in the flow cell, detects scattered light or fluorescence generated from the particle and analyzes the particle, wherein: the flow channels in the flow cell form a structure in which the upstream side and the downstream side of the flow channels are symmetrical to each other; a first liquid storage tank and a second liquid storage tank are formed on the upstream side and the downstream side of the flow cell, respectively; the sheath liquid-introduced flow channels are connected to the first liquid storage tank; the sample liquid-introduced flow channel is connected to a third liquid storage tank inside the first liquid storage tank, the pair of sheath liquid flow channels connected to the first liquid storage tank share a same liquid surface in the first liquid storage tank; the third liquid storage tank is separated from the first liquid storage tank, and has a structure preventing the sheath liquid and the sample liquid from being mixed in the first liquid storage tank; the flow channel in which the sheath liquid and the sample liquid are joined are divided on the downstream side in a pattern symmetrical to the upstream side; the flow channel at the center of the downstream flow channels is connected to a fourth liquid storage tank inside the second liquid storage tank; the separated flow channels on the opposite sides of the center flow channel are connected to the second liquid storage tank; a gas with a constant pressure higher than an atmospheric pressure, the gas being generated outside the flow cell is provided to the first liquid storage tank using a detachable cap structure; the flow rate of the sample liquid is controlled to be constant by controlling the pressure of the gas; the sample liquid is collected into the fourth liquid storage tank on the downstream side; and the sheath liquids are collected into the second liquid storage tank, and a flow cell for the apparatus. | 03-24-2011 |
20110085166 | OPTO-FLUIDIC NANOPARTICLE DETECTION APPARATUS - Provided herein are new methods and apparatus for quantitative measurement and analysis of particles, including new apparatus systems to process and detect nanoparticles in suspension. By focusing a laser beam at the center of a reservoir, nanoparticles are concentrated by optical energy, and fluorescent intensity at the focal point of the laser is measured to quantify particle concentration in the reservoir. The techniques may be applied to the analysis of suspensions of nanoparticles, including natural particles (e.g., microorganisms including whole viruses, bacteria, animal cells, and proteins) and synthetic particles (e.g., colloidal latexes, paints, pigments, and metallic or semiconductor nanoparticles) for medical and industrial applications, among others. | 04-14-2011 |
20110134427 | MONITOR FOR MONITORING PARTICLES FLOWING IN A STACK - An instrument ( | 06-09-2011 |
20110134428 | Evaporative Light Scattering Detector - Described is a detector for receiving the eluent from a liquid- or supercritical-fluid chromatograph in which a signal indicative of the presence of an analyte in the eluent is generated by the scattering of light by desolvated particles of the analyte. The detector includes a nebulizer for generating an aerosol from the eluent in a chamber that has a wall in thermal communication with a heat sink. Changes in the temperature of the wall during an analysis of the eluent are reduced by the transfer of heat to the first heat sink. | 06-09-2011 |
20110176131 | METHOD AND DEVICE OF COMPENSATING SCATTERING LIGHT SIGNALS GENERATED BY LIGHT INTERACTION WITH PARTICLES OR BIOLOGICAL CELLS MOVING IN FLUID CURRENTS, SUCH AS IN FLOW CYTOMETRY - A method and device of detecting a scattering light beam for tools measuring scattering signals produced by the interaction of solid microparticles, such as a biological cells moving with a high-intensity, focused light beam, capable of reducing the influence of the cell movement with respect to the optical axis of the illuminating beam, and improving the quality of the signal characterized by the recognition of the individual particle or cell, specifically in fluid currents, such as those used in flow cytometry are disclosed. | 07-21-2011 |
20110188039 | PARTICLE DETECTOR - A particle detector includes: a gas cell in which a gaseous alkali metal atom is sealed; a light source that emits a plurality of coherent light beams containing first light and second light having different frequencies; a light detection unit that receives light and produces a detection signal according to the intensity of the received light, the light being emitted from the light source, passing through a space in which predetermined particles can be present, and being incident on the gas cell and passing therethrough before reaching the light detection unit; and an analysis assessor that performs analysis assessment of at least one of the following items based on the detection signal: whether or not the particles are present and the concentration thereof. | 08-04-2011 |
20110211195 | APPARATUS AND METHOD FOR DETERMINING CONCENTRATION OF GASEOUS COMPONENT - A sufficiently large light detection value can be obtained to determine a concentration of a target component in a desired section, without using a laser emitter of a high laser intensity or a large light collector. By changing an orientation of a laser emitter | 09-01-2011 |
20110216319 | DEVICE AND METHOD FOR INVESTIGATING ANALYTES IN LIQUID SUSPENSION OR SOLUTION - An optical detection device is provided for analyzing analytes in a liquid suspension or solution that can detect and process a large number of wavelengths of incident and fluorescent light simultaneously, which is small in size and can be easily adapted to different investigation requirements. The optical detection device may include a light supplying device, an analyte handling device, a light directing device, and a detector integrated on planar substrate devices, respectively. A plurality of optical waveguides are integrated in the substrate devices to direct light emitted by the light supplying device through the different sections of the optical detector to the detector. The analyte handling device may include an analyte channel for the liquid flow of the analyte suspension or solution and an analyte sorting device comprising several sorting channels. | 09-08-2011 |
20110228271 | METHOD AND APPARATUS FOR RAPIDLY COUNTING AND IDENTIFYING BIOLOGICAL PARTICLES IN A FLOW STREAM - A method for increasing the throughput, or the precision, or both the precision and the throughput, of a flow cytometer, or of a hematology analyzer employing a flow cytometer, by utilizing the technique of laser rastering. Laser rastering involves sweeping a laser beam across a flowing sample stream in a hematology analyzer. An apparatus suitable for carrying out the method of this invention comprises an optical module comprising a source of light, a scanning device, a lens or system of lenses, a flow cell, detectors, and filters; and an electronic module comprising preamplifiers, analog signal conditioning elements, analog-to-digital converters, field-programmable gate arrays, digital signal processing elements, and data storage elements. | 09-22-2011 |
20110242535 | Cell Construction For Light Scatter Detectors Having Self-Focusing Properties - The invention relates to a device and to a method for measuring the scattered light about molecules present in a suspension, wherein the suspension is fed through a measurement cell. The measurement cell is produced as a segment of a curved surface, particularly an ellipsoid, a hyperbolic shape, a parabolic shape, or a circle, and comprises a curved and a flat surface. Light-sensitive detectors are disposed about the curved surface and capture the scattered light. | 10-06-2011 |
20110255087 | DETECTION OF PARTICLE CHARACTERISTICS - A method of detecting particles in an air flow is described. The method includes receiving a signal indicative of light intensity scattered from the air flow at a plurality of wavelengths and processing the signal indicative of the intensity of received light at each of the wavelengths and a corresponding wavelength dependent parameter to generate an output signal indicative of at least one characteristic of particles in the air flow. A particle detection system is also described. | 10-20-2011 |
20110273710 | Turbidity Sensors and Probes - Turbidity heads for a turbidity sensor or probe and the resulting sensor are disclosed that include a light source providing an outgoing light ray, a photodetector capable of detecting an incoming light ray; an isolator separating the light source from the detector portion; and a first reflector in the path of either the outgoing light ray or the incoming light ray. The first reflector is positioned to reflect either the outgoing light ray or the incoming light ray to achieve a measurement angle defined between the outgoing light ray and the incoming light ray of ninety degrees plus-or-minus two and a half degrees to comply with the standard ISO 7027 for turbidity measurement. | 11-10-2011 |
20110310385 | Light Scattering Aerosol Detect Device - One aspect is an aerosol detection arrangement including a light source for projecting a light beam. The arrangement includes a light collector configured to collect light scattered off liquid drops in an aerosol that enter the light beam and processing the scattered light into an output signal. The arrangement includes a controller for receiving the output signal from the light collector and uses the output signal to determine a predicted number of main liquid drops ejected. | 12-22-2011 |
20110317162 | NEPHELOMETER WITH CONCENTRATION-MODULATED SAMPLE FLOW - A nephelometer for detecting the concentration of particulates in a sample aerosol is provided with a branched flow path with a sample aerosol input, a clean gas input and an output leading to an optical sensor unit. At least one of the inputs has periodic variable flow so that a concentration-modulated gas stream is supplied to the optical sensor unit. The detector output of the sensor unit is processed in synchrony with the concentration modulation to filter out DC components, such as 1/f noise and parasitic instrument noise. | 12-29-2011 |
20120013906 | GRIN LENS ARRAY LIGHT PROJECTOR AND METHOD - One aspect is a light source assembly in a drop detection arrangement. The light source assembly includes a light source and a gradient-index lens array to at least partially collimate light from the light source and to project a collimated light beam into the drop detection arrangement in a direction transverse to a drop direction of droplets in the drop detection arrangement. The light source assembly produces the light beam such that it has a beam width in a direction transverse to the drop direction that is larger than a beam height in the drop direction. | 01-19-2012 |
20120019825 | Flow cytometry system and method for applying gain to flow cytometry data - The invention relates to a flow cytometer system and method to apply a gain to data measurements to improve the display of the data measurements. The method for applying a gain to data detected in a flow cytometer, involves obtaining measurements from a detector in a flow cytometer, applying a gain to the measurements to produce shifted measurements to allow for improved display of the shifted measurements while maintaining the relationship between data points of the shifted measurements and displaying the shifted measurements on a display. | 01-26-2012 |
20120062891 | METHOD FOR THE RHEOLOGICAL CHARACTERISATION OF A COMPLEX MEDIUM - Method for quantitatively determining the viscoelastic properties of a complex medium with suspended particles in suspension, the method includes the following stages:
| 03-15-2012 |
20120092667 | OPTICAL INFORMATION ANALYZING DEVICE AND OPTICAL INFORMATION ANALYZING METHOD - There are provided an optical information analyzing device and an optical information analyzing method in which a light receiving unit for receiving transmitted light is provided at a position directly facing an irradiating unit and which may increase the sensitivity of the received transmitted light by adjusting the position of a sample flow relative to a measurement region in a flow passage and measure the optical information on specimens with a small variation. An optical information analyzing device includes an irradiating unit that irradiates irradiation light to specimens, a transmitted light receiving unit that receives transmitted light and detects the transmitted light as a transmitted light signal, a scattering/fluorescent light receiving unit that receives lateral scattering light and fluorescent light and detects the lateral scattering light and the fluorescent light as a scattering/fluorescent light signal, a nozzle position adjusting mechanism that adjusts the position of an end portion of an introduction nozzle so as to align the position of the end portion of the introduction nozzle with the transmitted light receiving unit and the irradiating unit, and an analyzing unit that measures the optical information on the specimen on the basis of the detected transmitted light signal and the detected scattering/fluorescent light signal and analyzes the specimen. | 04-19-2012 |
20120105849 | POLARIZED ELASTIC SCATTER DETECTION METHOD AND SYSTEM OF TRACKING AND MEASURING THE VELOCITY OF INDIVIDUAL AEROSOL PARTICLES - Measuring and tracking velocity of individual aerosol particles in a bio-threat detection system are accomplished using a single beam laser source in combination with a birefringent crystal that splits the laser beam into two beams having orthogonal polarization. Scattered light is collected with an elliptical reflector and directed into two detection channels, sampling total elastic scatter in the first channel and sampling polarized elastic scatter in the second channel. The difference in intensity of the scattered light in the polarized channel is used to identify the position of the particles. By taking the ratio of signal output from the polarized detector to the total scatter detector, a threshold level can be established to determine the presence of particles traversing the two beams. The particles are time stamped as they traverse the two beams and the time difference between the pulses can be used to measure the velocity of the particles. | 05-03-2012 |
20120133935 | MEASURING SYSTEMS FOR MEASURING ABSORPTION OR SCATTERING AT DIFFERENT WAVELENGTHS - A measuring system for measuring absorption or scattering of a medium at a plurality of different wavelengths, whereby the measurements for the different wavelengths are performable as simultaneously and as accurately as possible. The measuring system comprises: a measuring chamber; a transmitting unit, which sends light of its respective wavelength into the measuring chamber; a control, which operates each light source with a different time modulation of transmission intensity for each wavelength; a detector for measuring a total radiation intensity. The total radiation intensity corresponds to a superpositioning of each intensity portion striking the detector for each wavelength; and a signal processing system, which determines for each of the wavelengths the associated intensity portion based on the total radiation intensity measured by detector and the modulations. | 05-31-2012 |
20120133936 | PARTICLE COUNTING METHOD - A particle counting method that can count the number of the particles precisely. The method discriminates a wave pattern of the scattered light from a normal particle (subject of the counting) and a wave pattern of the light scattered by the agitation such as a floating particle, a radiation or changes in the intensity of the light. In one embodiment, a method for counting particles is disclosed which irradiates a light to a sample gas, detects a scattered light from a particle included in the sample gas by a photoelectric conversion device, counts the number of the particles of every particle size division by the output voltage wave pattern of the photoelectric conversion device, calculate a time difference (Ta−T | 05-31-2012 |
20120140222 | LIGHT SCATTERING TYPE PARTICLE DETECTOR USING SCATTERED LIGHT OF SURFACE PLASMON RESONANCE PHOTONS - A particle detector comprises a light source, and a metal layer having an incident/reflective surface and a photoelectric surface opposing the incident/reflective surface. Incident light from the light source reaches the incident/reflective surface to excite near-field surface plasmon resonance photons at the photoelectronic surface. A particle deposited on the photoelectronic surface of the metal layer changes the near-field surface plasmon resonance photons to far-field scattered light. The particle detector further comprises a unit, provided above the photoelectric surface of the metal layer, for detecting the far-field scattered light. | 06-07-2012 |
20120147370 | PATHOGEN AND PARTICLE DETECTOR SYSTEM AND METHOD - A particle detector has a sample area of cross section no in excess of about 2 mm for containing environmental fluid, a light source on one side of the sample area for directing a collimated or nearly collimated beam of light through the sample air or water so that part of the light beam will be scattered by any particles present in the air or water while the remainder remains unscattered, and a beam diverting device on the opposite side of the sample area for diverting or blocking at least the unscattered portion of the beam of light and directing at least part of the scattered light onto a detector. The detector produces output pulses in which each pulse has a height proportional to particle size and a pulse height discriminator obtains the size distribution of airborne particles detected in the air or water sample at a given time from the detector output. The detector may also include a device for discriminating between biological agents and inorganic particles. | 06-14-2012 |
20120162644 | MICROPARTICLE DETECTION APPARATUS - A microparticle detection apparatus is provided. The microparticle detection apparatus includes a light emitting optical element, a converging optical system disposed in an advancing direction of light emitted from the optical element to converge the light, a particle path located in an advancing direction of the light having passed through the converging optical system so that the particle path intersects the light, a beam blocking unit to block direct light having passed through the particle path, a condensing lens disposed at the rear of the beam blocking unit, and a detector disposed at the rear of the condensing lens to detect light scattered by particles. A focal point of light formed by the optical element and the converging optical system may be located at the rear of the particle path. A focal point of light irradiated to the particles may be different from the introduction position of the particles. | 06-28-2012 |
20120162645 | METHOD FOR DETERMINING A MEASURED VARIABLE OF A MEDIUM, ESPECIALLY FOR TURBIDITY MEASUREMENT - Method for determining a measured value of a measured variable of a medium, by means of an optical sensor arrangement, which has at least one transmitter and at least one receiver, comprising the steps as follows: supplying the at least one transmitter with an exciter signal for producing an optical transmitter signal with a transmission signal strength, wherein the transmitter signal is converted by interaction with the medium as a function of the measured variable into a changed transmitter signal; producing a receiver signal from the transformed transmitter signal by means of the at least one receiver and registering a receiver signal strength of the receiver signal; conforming an excitation signal strength of the exciter signal based on the registered receiver signal strength for reaching a predetermined receiver signal strength; and registering the excitation signal strength required for reaching the predetermined receiver signal strength and determining the measured value therefrom. | 06-28-2012 |
20120176616 | FLUID SUBMERSIBLE SENSING DEVICE - A fluid submersible sensing device is provided comprising a fluid-tight housing defining an internal chamber and including window structure; sensing structure provided in the internal chamber; light providing apparatus in the internal chamber emitting light capable of passing through the window structure so as to exit the housing; and a sample-providing structure coupled to the housing and located outside of the housing internal chamber comprising a passage through which a fluid flows. The passage may have a longitudinal axis substantially parallel with a flow path through the passage and a cross sectional area substantially transverse to the longitudinal axis. The light from the housing exits the housing, passes through the sample-providing structure including the passage and re-enters the housing toward the sensing structure. | 07-12-2012 |
20120250018 | FINE PARTICLE ANALYZING APPARATUS AND FINE PARTICLE ANALYZING METHOD - A fine particle analyzing apparatus includes a light irradiation unit configured to irradiate a fine particle that flows in a flow path with a laser beam, and a detection unit configured to detect light emitted from the fine particle that is irradiated with the laser beam. In the fine particle analyzing apparatus, the light irradiation unit includes at least a light source that is composed of a semiconductor laser, an optical fiber that converts a beam pattern of the laser beam generated from the light source into a top-hat type beam pattern, and a light source driving control unit configured to supply driving current, which is obtained by superimposing high-frequency current on direct current, to the light source. | 10-04-2012 |
20120262714 | LOW PROFILE, HIGH FLOWTHROUGH SMOKE CHAMBER - A low profile optical smoke chamber structure with a top cover incorporating airflow slots, an intermediate annular air channel, a depending light shield wall surrounding an interior detection chamber where the top cover is interengagable with a base member where the light shield wall is spaced from the base member so as to provide minimal deflection of ambient airflow into the detection chamber while preventing impingement of ambient light therein. | 10-18-2012 |
20120307244 | Multiple Flow Channel Particle Analysis System - A microfluidic multiple channel particle analysis system ( | 12-06-2012 |
20120307245 | DEVICE AND METHOD FOR INVESTIGATING ANALYTES IN LIQUID SUSPENSION OR SOLUTION - An optical detection device is provided for analyzing analytes in a liquid suspension or solution that can detect and process a large number of wavelengths of incident and fluorescent light simultaneously, which is small in size and can be easily adapted to different investigation requirements. The optical detection device may include a light supplying device, an analyte handling device, a light directing device, and a detector integrated on planar substrate devices, respectively. A plurality of optical waveguides are integrated in the substrate devices to direct light emitted by the light supplying device through the different sections of the optical detector to the detector. The analyte handling device may include an analyte channel for the liquid flow of the analyte suspension or solution and an analyte sorting device comprising several sorting channels. | 12-06-2012 |
20130050698 | MICROPARTICLE ANALYSIS APPARATUS - A microparticle analysis apparatus includes at least: a detecting unit having one or a plurality of light sources and a plurality of photodetectors, configured to emit excitation light from the light sources, and to detect light emitted from microparticles on which the excitation light is irradiated, at the photodetectors; a first storage unit configured to store, for each microparticle, data detected at the photodetectors of the detecting unit based on detected time; and a second storage unit configured to store data relating to a particular microparticle of detected data stored in the first storage unit. | 02-28-2013 |
20130070243 | METHOD AND APPARATUS FOR MEASURING OPTICAL PROPERTIES OF PARTICLES OF A DISPERSION - Disclosed is apparatus for measuring optical properties of particles of a flowable dispersion using a measuring cuvette. The dispersion flows through the central inner chamber of the cuvette. Two laser light beams, which are offset 90 degrees to one another, illuminate the inner chamber of the cuvette, so as to illuminate a particle, regardless of its orientation, in a way that balances out form factor errors. | 03-21-2013 |
20130100445 | METHOD FOR DATA ACQUISITION - A method for data acquisition from a combustion process that generates hot gases includes directing a light beam through the hot gases, detecting signals indicative of a scattered beam in a predefined direction by each hot gas volume through which the light beam passes through, processing the detected signals to ascertain the absorption spectrum of the hot gases, processing the absorption spectrum to obtain data indicative of the combustion process. | 04-25-2013 |
20130120749 | Particle Detector and Method for Producing Such A Detector - The invention relates to a particle detector including a substrate ( | 05-16-2013 |
20130141721 | SPATIALLY-AND TEMPORALLY-RESOLVED MULTI-PARAMETER INTERFEROMETRIC RAYLEIGH SCATTERING SYSTEM AND METHOD - A system that simultaneously measures the translational temperature, bulk velocity, and density in gases by collecting, referencing, and analyzing nanosecond time-scale Rayleigh scattered light from molecules is described. A narrow-band pulsed laser source is used to probe two largely separated measurement locations, one of which is used for reference. The elastically scattered photons containing information from both measurement locations are collected at the same time and analyzed spectrally using a planar Fabry-Perot interferometer. A practical means of referencing the measurement of velocity using the laser frequency, and the density and temperature using the information from the reference measurement location maintained at constant properties is provided. | 06-06-2013 |
20130141722 | SYSTEM AND METHOD FOR ANALYZING PORE SIZES OF SUBSTRATES - A system for analyzing the pore size of a substrate or device containing substrates adapted to separate fluids and has at least two surfaces, a first and a second surface, which are isolated from, one another and wherein the substrate or devices containing the substrates have an exit for fluids passing through the substrate, comprising: a) a particle generator ( | 06-06-2013 |
20130162993 | ANALYZATION INSTRUMENT - Various optical apparatus, in particular embodiments, may provide a source of parallel light ( | 06-27-2013 |
20130182253 | WAVEFRONT COMPENSATION FOR DEEP TISSUE OPTICAL MICROSCOPY - Wavefront distortions of an optical beam are measured. The transverse optical modes of the optical beam are partitioned into a plurality of subsets of transverse optical modes, one of the subsets of transverse optical modes is selected as the current subset, and the optical beam is modulated based on the current subset by maintaining the transverse optical modes of the optical beam that are outside the current subset stable, and modulating the transverse optical modes of the optical beam within the current subset. A non-linear optical signal is generated from the modulated optical beam by directing the modulated optical beam through a non-linear optical system that includes a random scattering medium, the power of the generated non-linear optical signal is measured, and, based on the measured power, values of the spatial phase for the optical beam at transverse optical modes are extracted within the current subset. | 07-18-2013 |
20130182254 | METHOD TO MEASURE PARTICLE MOBILITY IN SOLUTION WITH SCATTERED AND UNSCATTERED LIGHT - A method is disclosed for measurement of the electrophoretic mobility of particles in solution. A sample is placed in a cell containing two electrodes that apply an alternating electric field. A monochromatic light beam passes through the sample. Light scattered by the particles, along with the unscattered beam, is collected and collimated as it exits the cell. This beam is combined in free space with a phase modulated reference beam. The interference forms a frequency modulated speckle pattern, which is detected by a photodetector array. Each array element collects a narrow range of well-defined scattering angles. The signal from each is demodulated to provide a first-principle measurement of the electrophoretic mobility of the scattering particles. Each detector element provides a simultaneous independent measurement increasing the amount of information which results in increased sensitivity, extending mobility measurements to particles below one nanometer while reducing the required concentration and electric field. | 07-18-2013 |
20130208277 | LASER SCAN DEVICE - Disclosed herein is a laser scan device. The laser scan device according to a preferred embodiment of the present invention includes a laser light emitting unit emitting a laser beam; a scan unit irradiating the laser beam to a measurement portion of a measurement object; and a condensing unit including a spherical light collector condensing light generated by irradiating the laser beam to the measurement object. | 08-15-2013 |
20130242302 | FINE PARTICLE MEASUREMENT DEVICE - A fine particle measurement device includes a 4f optical system in an optical path that causes a beam spot of a laser output from a light source to form an image with respect to fine particles. | 09-19-2013 |
20130258335 | SMOKE DETECTOR - A smoke detector ( | 10-03-2013 |
20130271762 | DEVICE AND METHOD FOR INVESTIGATING ANALYTES IN LIQUID SUSPENSION OR SOLUTION - An optical detection device is provided for analyzing analytes in a liquid suspension or solution that can detect and process a large number of wavelengths of incident and fluorescent light simultaneously, which is small in size and can be easily adapted to different investigation requirements. The optical detection device may include a light supplying device, an analyte handling device, a light directing device, and a detector integrated on planar substrate devices, respectively. A plurality of optical waveguides are integrated in the substrate devices to direct light emitted by the light supplying device through the different sections of the optical detector to the detector. The analyte handling device may include an analyte channel for the liquid flow of the analyte suspension or solution and an analyte sorting device comprising several sorting channels. | 10-17-2013 |
20130314705 | METHOD OF MEASURING A DIFFUSION CHARACTERISTIC VALUE OF A PARTICLE - There is provided a method of measuring a diffusion characteristic value (for example, a diffusion constant) of a light-emitting particle using the scanning molecule counting method using the optical measurement with a confocal microscope or a multiphoton microscope. The inventive method of measuring a diffusion characteristic value of a light-emitting particle is characterized to measure light intensity from the light detection region with moving the position of the light detection region in the sample solution by changing an optical path of the optical system to generate light intensity data and to compute a diffusion characteristic value of the light-emitting particle based on a deviation time from a moving cycle time of the light detection region in an interval of generation times of two or more signals corresponding to a same light-emitting particle on the light intensity data. | 11-28-2013 |
20130342838 | OPTICAL PARTICLE DETECTING DEVICE AND PARTICLE DETECTING METHOD - An optical particle detecting device including a light source that emits an inspection light, a converting unit that converts the inspection light into collimated light, a focusing reflecting mirror that reflects toward a focal point the inspection light that has been converted into collimated light, a jet mechanism that causes an airstream including a particle to jet into the focal point of the focusing reflecting mirror, and a detecting portion that detects either scattered light or fluorescence produced by the particle included in the airstream being illuminated by the inspection light. | 12-26-2013 |
20140022547 | PARTICLE DETECTOR, SYSTEM AND METHOD - The invention provides use of one or more emitted beams of radiation ( | 01-23-2014 |
20140049775 | MEASUREMENT OF SERUM LIPOPROTEINS - Although a more accurate estimate of a person's risk of cardiovascular disease can be made on the basis of the number of lipoprotein particles per unit volume in the person's blood, current methods all rely on measuring the mass of lipoprotein cholesterol per unit volume. It has been discovered that a rapid and accurate lipoprotein particle count can be obtained by photometry. A method and apparatus are provided for measuring the number of lipoprotein particles in a sample using photometry. | 02-20-2014 |
20140063498 | LIGHT EMISSION PORTION, PHOTOELECTRIC SMOKE SENSOR, AND SUCTION-TYPE SMOKE SENSING SYSTEM - The present invention can detect smoke with high accuracy. A light emitting portion is provided with a light emitting element outputting the inspection light with high brightness, the distribution of which is adjusted. A reflection portion collects the inspection light from the light emitting element to the detection region. A diaphragm portion transmits the collected light toward the detection region, while removing light diffused to regions other than the detection region a light shielding portion shields the light diffused to the regions other than the detection region. The light emitting element is provided with a light source outputting the inspection light with high brightness and a parabolic reflective mirror whose curved surface reflects light from the light source toward the detection region, the reflected light being in a doughnut shape in which the center is relatively dark and the periphery is bright. | 03-06-2014 |
20140063499 | SMOKE DETECTOR - An aperture member ( | 03-06-2014 |
20140078502 | FLOW CYTOMETER NOZZLE TIP - A nozzle tip formed from a cylindrical body defining a longitudinal axis and a frustoconical body adjoining the cylindrical body on the longitudinal axis. The cylindrical body may be in fluid communication with the frustoconical body. The frustoconical body may end in a flat surface with a nozzle exit orifice which is transverse to the longitudinal axis. There may be a cutout at the edge of the frustoconical body and the flat surface. The flow cytometer system may also include a source of electromagnetic radiation for producing a beam incident upon the fluid stream and the particles and a detector for detecting light emitted or reflected from the particles within the fluid stream in response to the beam. | 03-20-2014 |
20140092386 | METHOD AND DEVICE FOR ANALYZING SMALL PARTICLES IN GAS - A method for detecting decalibration of a device for analyzing particles, including irradiating particles with light, detecting light scattered from the particles, amplifying, digitizing and detecting the electric signal obtained in a plurality of digital channels corresponding to the intensity representing the particle size and monitoring the appearance of the Mie peak in the measured size-dependent frequency distribution and sending a report if the Mie peak deviates in a digital channel other than the digital standard channel belonging to it based on measurement settings. The electronic analyzing unit detecting a Mie peak in the measured particle size distribution and assigning it to a digital detection channel in a device for detecting the concentration of small particles in gas, with a sample tube, a light source, a detector detecting scattered light scattered on the particles, an analog amplifier, an analog-digital converter, an electronic analyzing unit and a display and operating unit. | 04-03-2014 |
20140111803 | SCATTERED LIGHT-TYPE SMOKE DETECTION APPARATUS - [Problem to be Solved] | 04-24-2014 |
20140118739 | TIME-REVERSAL OF VARIANCE-ENCODED LIGHT (TROVE) - A method and apparatus for irradiating a scattering medium with increased resolution. The method includes transmitting EM radiation from an Electromagnetic (EM) radiation source to a target inside a scattering medium, wherein the target encodes the EM radiation with a variance structure to form encoded EM radiation; measuring, in a detector, transmitted EM radiation comprising at least a portion of the encoded EM radiation transmitted through and exiting the scattering medium; decoding the transmitted EM radiation, comprising EM fields, in a computer, comprising selecting one or more of the EM fields having the variance structure; and irradiating the scattering medium with time reversed EM radiation from a spatial light modulator (SLM), the time reversed EM radiation generated from time reversing the EM fields having the variance structure, thereby forming a focus of the time reversed EM radiation in the scattering medium with the increased resolution. | 05-01-2014 |
20140139834 | DEVICE AND PROCESS TO APPROXIMATE SOMATIC CELL COUNT OF UNTREATED MAMMALIAN MILK - Device and process to approximate somatic cell count (SCC) of untreated mammalian milk by the two variable equation SCC=f (FSL, FAT) with a forward scattered light factor (FSL) being obtained by detecting light scattered by the milk into an angular range within, and less than, the angular range 0.0 to 0.5 degrees away from the central axis of incident light, with a proxy (FAT) for the fat content of the milk, which may be obtained by detecting light attenuation of the milk sample, and with the function (f) being obtained by calibration of the device using reference milk samples. | 05-22-2014 |
20140146315 | DEVICE AND METHOD FOR INVESTIGATING ANALYTES IN LIQUID SUSPENSION OR SOLUTION - An optical detection device is provided for analyzing analytes in a liquid suspension or solution that can detect and process a large number of wavelengths of incident and fluorescent light simultaneously, which is small in size and can be easily adapted to different investigation requirements. The optical detection device may include a light supplying device, an analyte handling device, a light directing device, and a detector integrated on planar substrate devices, respectively. A plurality of optical waveguides are integrated in the substrate devices to direct light emitted by the light supplying device through the different sections of the optical detector to the detector. The analyte handling device may include an analyte channel for the liquid flow of the analyte suspension or solution and an analyte sorting device comprising several sorting channels. | 05-29-2014 |
20140168647 | INTEGRATED SMOKE CELL - A device and method for manufacturing an integrated smoke cell are presented. The smoke cell includes an integral housing with a ceiling portion and a smoke permeable wall forming a chamber when mounted on a printed circuit board. An emitter and detector are mounted above apertures in the chamber ceiling so the emitter and detector are mounted substantially outside the chamber while detecting smoke present within the chamber without blocking ingress of smoke through the chamber wall. | 06-19-2014 |
20140204379 | TURBIDIMETER - The present invention is intended to provide a turbidimeter having a simple and sturdy structure which is hard to break and exhibits excellent long-term stability by reducing a number of sealing positions, wherein a cylindrical sensor head forming a measurement space is formed of an optically-transparent material. A side wall of the sensor head has accommodating spaces for accommodating a light source, transmitted light detector, and scattered light detector. An inner surface of the side wall of the sensor head is configured to serve as: an optical window for guiding inspection light to the measurement space; an optical window for guiding transmitted light to the transmitted light detector; and an optical window for guiding scattered light to the scattered light detector. | 07-24-2014 |
20140247450 | SYSTEM AND METHOD FOR CONVERTING OPTICAL DIAMETERS OF AEROSOL PARTICLES TO MOBILITY AND AERODYNAMIC DIAMETERS - A system and a method of measuring a particle's size in a select aerosol using the optical diameter of the particle to perform a mobility and/or aerodynamic diameter conversion without any knowledge about the particle's shape and its optical properties in the aerosol being characterized. In one example embodiment of the invention, the method includes generating a set of calibration data and finding the optimal refractive index and shape that best fits the calibration data. In addition, the method includes creating a new calibration curve that provides a mobility-equivalent or aerodynamic-equivalent diameter. | 09-04-2014 |
20140247451 | SYSTEM AND METHOD FOR MEASURING PARTICLES IN A SAMPLE STREAM OF A FLOW CYTOMETER USING LOW-POWER LASER SOURCE - A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals. | 09-04-2014 |
20140285801 | MIXED-MODE PHOTO-AMPLIFIER FOR PARTICLE COUNTER - An airborne, gas, or liquid particle sensor with a mixed-mode photo-amplifier front-end. The photo-amplifier uses pulse-height for the high-gain channel and integrates the pulse-energy for the low-gain channel to provide for a larger dynamic range for larger size particles. | 09-25-2014 |
20140293281 | PARTICLE ANALYZER, OPTICAL SYSTEM FOR PARTICLE ANALYZER, AND LENS FOR PARTICLE ANALYZER - A particle analyzer comprises a light source, a flow cell, an irradiating optical system, and a light receiving optical system. The light receiving optical system comprises a light focusing lens system which includes a light focusing lens configured to focus forward scattered light from the particles, a light receiving member configured to receive the forward scattered light, and a beam stopper. The beam stopper is provided in the light path between the light focusing lens system and the light receiving member. The light focusing lens has an aspheric lens form. The light focusing lens system is configured such that the focal distance of the forward scattered light through the central area which includes the optical axis is longer than the focal distance of the forward scattered light through the peripheral area outside the central area. | 10-02-2014 |
20140313510 | MULTIPLEX FLUORESCENT PARTICLE DETECTION USING SPATIALLY DISTRIBUTED EXCITATION - A chip-scale optical approach to performing multi-target detection is based on molecular biosensing using fiber-optic based fluorescence or light scattering detection in liquid-core waveguides. Multiplexing methods are capable of registering individual nucleic acids and other optically responsive particles, and are ideal for amplification-free detection in combination with the single molecule sensitivity of optofluidic chips. This approach overcomes a critical barrier to introducing a new integrated technology for amplification-free molecular diagnostic detection. Specific examples of liquid-core optical waveguides and multi-mode interferometers are described; however, they can be implemented in a number of different ways as long as a series of excitation spots is created whose spacing varies with the excitation wavelength. | 10-23-2014 |
20140333928 | SMOKE DETECTOR WITH EXTERNAL SAMPLING VOLUME AND AMBIENT LIGHT REJECTION - In accordance with certain embodiments, a smoke detector determines the presence of smoke particles outside its housing based on measurements of light detected at different wavelengths and corrected based on an ambient light level. | 11-13-2014 |
20140347663 | AEROSOL EXPOSURE MONITORING - A gas processing device such as an aerosol exposure monitor is configured for acquiring chronic data, acute data, or both simultaneously, and may include a pump and a noise dampening device. The noise dampening device may include an elastomeric membrane between an inlet chamber and an outlet chamber. In another aspect, an aerosol exposure monitor may include an impactor, a collection filter, and a nephelometer that includes a sample chamber integrated with an aerosol flow path associated with the impactor and collection filter. | 11-27-2014 |
20150049333 | Micro-Optical Cavity with Fluidic Transport Chip for Bioparticle Analysis - This invention provides new methods and apparatus for rapidly analyzing single bioparticles to assess their material condition and health status. The methods are enabled by a resonant cavity to measure optical properties related to the bioparticle size and refractive index. Refractive index measurements are useful for determining material properties and biomolecular composition of the bioparticle. These properties and composition are dependent on the health state of the bioparticle. Thus, measured optical properties can be used to differentiate normal (healthy) and abnormal (diseased) states of bioparticles derived from cells or tissues. The methods are illustrated with data obtained from a resonator with a gain medium. The invention also provides new methods for multiple measurements in a single device, analyzing and manipulating bioparticles that are much smaller than the wavelength of light, and provides a microfluidic transport chip to enable rapid single bioparticle analysis of large populations of bioparticles. | 02-19-2015 |
20150077749 | DEVICE FOR CALIBRATING A SCATTEROMETER - A calibration device is described for calibrating a scatterometer, which is designed in particular for measuring a particle concentration in exhaust gases of motor vehicles. The calibration device has at least one scattering body which emits scattered light having a defined intensity and distribution when irradiated with a light beam, the scattering body having an emission surface for the scattered light, to which is assigned at least one light sensor for detecting the scattered light exiting the emission surface. A screening body having at least one screen opening through which the scattered light exits in the direction of the at least one light sensor is assigned to the emission surface of the scattering body. | 03-19-2015 |
20150103344 | METHOD FOR DETERMINING AT LEAST ONE PHYSICAL, CHEMICAL AND/OR BIOLOGICAL MEASURED VARIABLE BY MEANS OF OPTICAL SENSORS, AND TURBIDITY SENSOR - A turbidity sensor and a method for determining at least one physical, chemical and/or biological measured variable of process automation in a medium by means of at least one optical sensor, comprising the steps of sending transmission signals into the medium, wherein the transmission signals are converted into received signals by interaction with, especially by scattering from, the medium as a function of the measured variable; receiving the received signals; and converting the received signals into the measured variable as a function of environmental conditions at the location of installation and, adjusting the sensor based on a calibration graph corresponding to environmental conditions at the location of installation. | 04-16-2015 |
20150103345 | APPARATUS FOR MEASURING THE SCATTERED LIGHT AND METHOD OF TESTING A RECEPTION OPTICS - An apparatus ( | 04-16-2015 |
20150103346 | SMOKE DETECTOR WITH EXTERNAL SAMPLING VOLUME AND AMBIENT LIGHT REJECTION - In accordance with certain embodiments, a smoke detector determines the presence of smoke particles outside its housing based on measurements of light detected at different wavelengths and corrected based on an ambient light level. | 04-16-2015 |
20150116709 | SENSOR AND METHOD FOR TURBIDITY MEASUREMENT - The present invention describes a low-cost, portable multi-parameter, turbidity sensor based on optical fiber. | 04-30-2015 |
20150116710 | Particle Detector and Method for Producing Such a Detector - The invention relates to a particle detector including a substrate made of a semiconductor material, in which at least one through-cavity is formed, defined by an input section and an output section, wherein the input section thereof is to be connected to an airflow source, the substrate supporting: an optical means including at least one laser source, and at least one waveguide connected to the at least one laser source and leading into the vicinity of the output section of the cavity; and a photodetector located near the output section of the cavity and offset relative to the optical axis of the optical means. | 04-30-2015 |
20150116711 | METHOD OF SMOKE DETECTION WITH DIRECT DETECTION OF LIGHT AND DETECTION OF LIGHT REFLECTED FROM AN EXTERNAL SAMPLING VOLUME - In accordance with certain embodiments, a smoke detector comprises a housing, a light source, one or more light detectors, and an evaluation circuit for determining the presence of smoke particles outside the housing based on light emitted from and reflected back into the housing, as well as light emitted within the housing without emission therefrom. | 04-30-2015 |
20150146204 | PHOTOELECTRIC SMOKE SENSOR - A photoelectric smoke sensor capable of detecting smoke with high accuracy is provided. | 05-28-2015 |
20150146205 | MEASUREMENT OF SERUM LIPOPROTEINS - Although a more accurate estimate of a person's risk of cardiovascular disease can be made on the basis of the number of lipoprotein particles per unit volume in the person's blood, current methods all rely on measuring the mass of lipoprotein cholesterol per unit volume. It has been discovered that a rapid and accurate lipoprotein particle count can be obtained by photometry. A method and apparatus are provided for measuring the number of lipoprotein particles in a sample using photometry. | 05-28-2015 |
20150293227 | DUST DETECTION APPARATUS AND DUST DETECTION METHOD - A dust detection apparatus includes a dust measuring unit that measures an amount of dust in air, a controller that determines a moving direction of the dust detection apparatus based on the measured amount of dust or a predetermined dust accumulation position candidate, a flight controller that controls a flight of the dust detection apparatus to the determined moving direction, and a communication unit that sends, to a server, location information of a dust accumulation position determined based on the measured amount of dust and the amount of dust measured by the dust measuring unit at the dust accumulation position. | 10-15-2015 |
20150316463 | PARTICLE COUNTER WITH ADVANCED FEATURES - An airborne or liquid particle sensor with a number of advanced features is disclosed. The sensor includes an output channel generating an electrical signal for a particle passing through the sensor, where the electrical signal includes information related to the pulse. The information is processed by the sensor to determine a value that indicates a more accurate particle mass for a sample period than the average mass. | 11-05-2015 |
20150316464 | Analysis of Bioparticles in an Optical Microcavity - This invention provides new methods and apparatus for rapidly analyzing a single bioparticle or a plurality of bioparticles to assess their condition. The invention is enabled by an optical microcavity comprising reflective structures to confine light and bioparticles in the same space. Under resonance conditions, an electromagnetic standing wave is established in the microcavity to interact with the bioparticle. Means are provided to bring a bioparticle into the microcavity and to detect changes in the resonance condition with and without the bioparticle in the microcavity. Information about the bioparticle is obtained using the benefits of light interactions as fast, non-contacting, and non-destructive. | 11-05-2015 |
20150328351 | SYSTEMS AND METHODS FOR DETERMINING THE CLEANLINESS OF A SURFACE - Systems and methods for determining the cleanliness of a surface. Surface marking systems of the present disclosure can include a plurality of retroreflective microspheres dispersed in or dispensed on a carrier. Applicators of the present disclosure can include a container comprising the surface marking system, and a dispenser. Methods of the present disclosure can include applying the surface marking system to at least one discrete site on the surface; illuminating the at least one discrete site on the surface with visible light, after a cleaning; and detecting retroreflection emitted from the at least one discrete site on the surface in response to illuminating the at least one discrete site to determine the effectiveness of the cleaning of the surface. | 11-19-2015 |
20150346074 | PARTICLE DETECTING DEVICE - A particle detecting device includes: a chamber; an injection nozzle provided within the chamber; a discharge nozzle that is disposed within the chamber, opposing the injection nozzle; a detecting mechanism that illuminates a sample fluid that is sprayed from the injection nozzle and detects a particle included in the sample fluid; a pressurizing fluid pipe, connected to the chamber, for supplying a pressurizing fluid for pressurizing an interior of the chamber; and a rectifying member that rectifies the pressurizing fluid so that a flow speed distribution of a fluid between the injection nozzle and the discharge nozzle, rectified in an axial direction, is symmetrical in respect to the axial direction. | 12-03-2015 |
20150346091 | DEVICE FOR DETECTING PARTICLES IN A LIQUID AND METHOD FOR DETECTING PARTICLES IN A LIQUID - A device, which detects particles in a liquid, includes: a flow cell through which a liquid flows; a light source that illuminates the flow cell with an inspection beam; a scattered light detector that detects scattered light that is produced in a region illuminated by the inspection beam; and an evaluating portion that evaluates that a particle is included in the liquid when the scattered light is detected for less than a prescribed time and evaluates that the flow cell is not filled with the liquid when the scattered light is detected for more than a prescribed time. | 12-03-2015 |
20150367345 | CONTINUOUS FLOW CENTRIFUGAL MICROFLUIDIC PARTICLE CONCENTRATOR, AND RELATED METHODS - A microfluidic disk for concentrating particles includes a plurality of distribution channels and separation channels. A sample fluid is flowed through the distribution channels while the disk is spun. Particles of the sample fluid flow into the separation channels where they accumulate. The particles in the separation channels may be subjected to an analysis. | 12-24-2015 |
20150369732 | METHOD OF CHARACTERIZING INTERACTIONS AND SCREENING FOR EFFECTORS - This invention enables high throughput detection of small molecule effectors of particle association, as well as quantification of association constants, stoichiometry, and conformation. “Particle” refers to any discrete particle, such as a protein, nucleic acid, carbohydrate, liposome, virus, synthesized polymer, nanoparticle, colloid, latex sphere, etc. Given a set of particle solutions having different concentrations, dynamic light scattering measurements are used to determine the average hydrodynamic radius, r | 12-24-2015 |
20150369733 | DYNAMIC LIGHT SCATTERING MEASUREMENT DEVICE AND DYNAMIC LIGHT SCATTERING MEASUREMENT METHOD - A dynamic light scattering measurement device includes an irradiation section that applies light emitted from a low-coherence light source to a sample that includes particles, a spectral intensity acquisition section that disperses reflected light from a reference plane and scattered light from the sample that has passed through the reference plane to acquire a spectral intensity of interference light of the reflected light and the scattered light, the reference plane being situated to intersect an optical path through which the light is applied to the sample, and a measurement section that measures dynamic light scattering of the sample based on the acquired spectral intensity. | 12-24-2015 |
20160003736 | DUST LINE WITH OPTICAL SENSOR, AND METHOD FOR MEASURING THE COMPOSITION OF DUST - An optical sensor is arranged in an indentation of a dust line, the indentation being equipped with at least one gas inlet nozzle for removing the dust from the optical sensor. Dust is transported through the dust line. An optical property of the dust is measured using at least one optical sensor arranged in an indentation of the dust line, and the dust is then removed from the optical sensor by blowing in air using the at least one gas inlet nozzle arranged in the indentation. | 01-07-2016 |
20160011117 | METHOD FOR REGULATING THE RELATIVE POSITION OF AN ANALYTE IN RELATION TO A LIGHT BEAM | 01-14-2016 |
20160025611 | FLOW CYTOMETER, PARTICLE ANALYZER, AND FLOW CYTOMETRIC METHOD - A flow cytometer comprises a flow cell configured to induce a flow of a sample containing object particles, a light source, an irradiating optical system configured to irradiate light from the light source on the flow of particles in the flow cell, a detecting part configured to detect light given off from the flow of particles which are irradiated by light. The irradiating optical system comprises a collective lens having an optical axis symmetric aspherical surface on one surface, and a cylindrical surface on the other surface. | 01-28-2016 |
20160033386 | OPTICS SYSTEM FOR A FLOW CYTOMETER - A flow cytometer includes a flow nozzle, a light source, an optics system, and a sensor analyzer. The flow nozzle provides a fluid along a flow path. The light source generates a light beam that illuminates the fluid. The optics system collects light rays that are radiated from the light beam by the fluid and passes or blocks the light rays based at least in part on the radiation angles associated with the light rays. | 02-04-2016 |
20160054223 | METHOD FOR MEASURING ANALYTE - A method for measuring the presence or amount of at least one analyte in a sample mixture that includes capturing a first analyte on a first cavity arrangement structure having a plurality of cavities; capturing an impurity present in the sample mixture or a second analyte on a second cavity arrangement structure that has a plurality of cavities and that differs from the first cavity arrangement structure in at least one of cavity size and surface modification; and after these steps, irradiating the first cavity arrangement structure or the first and second cavity arrangement structures with electromagnetic radiation and detecting the characteristics of scattered electromagnetic radiation. | 02-25-2016 |
20160069786 | AN OPTICAL SYSTEM AND A METHOD FOR REAL-TIME ANALYSIS OF A LIQUID SAMPLE - An optical system suitable for determining a characteristic as a function of time of at least a part of a liquid volume comprising a plurality of objects. The optical system provides a fast detection of a change in the liquid volume. The optical system comprises—an optical detection assembly comprising at least one image acquisition device configured to acquire images of an image acquisition area; —a sample device comprising at least one sample container suitable for holding a sample of said liquid volume; —a translating arrangement configured to translate said image acquisition area through at least one part of said sample container to perform a scan along a scanning path through said part of said sample container; and—an image analyzing processing system. The optical system is programmed to perform consecutive scans through said at least one part of said sample container, wherein each scan comprises acquiring images at a plurality of image acquiring positions of the image acquisition area by the optical detection assembly along at least one scanning path of the scan. The image analyzing processing system is programmed to determine a set of features in the form of a set of values for each of a plurality of objects captured on said images from each respective scan and to determine for each scan at least one derived result, the derived result is derived from a plurality of the sets of values, and to present said derived result obtained from the respective, consecutive scans as a function of time. | 03-10-2016 |
20160069802 | DEVICE FOR PREDICTING AMOUNT OF COARSE FLAKES IN COATING COMPOSITIONS BY WET COLOR MEASUREMENT - The present invention is directed to a device for predicting amount of coarse flakes, such as metallic aluminum flakes present in a coating composition, such as automotive OEM or refinish paint. The device includes measuring flop of a layer of the coating composition applied over a test substrate by using flop prediction device of the present invention. The process is repeated with varying amounts of one or more different types of coarse flakes added to the composition and the flop vs. amount of coarse flakes present in the coating composition is plotted on a graph and then by using a curve fitting equation, a flake amount prediction curve is obtained. By measuring the flop of a wet layer of a target coating composition, the amount of coarse flakes present in the target coating composition can then be predicted by using the flake amount prediction curve. The device is most useful during the manufacture of coating compositions, such as automotive OEM and refinishes paints. | 03-10-2016 |
20160091407 | PARTICLE COUNTER FOR CHEMICAL SOLUTION - A particle counter for chemical solution in this disclosure uses a flow cell through which a chemical solution including particles flows, a laser light, and a light-receiving element array. Scattered light from the particles passing through a detection region on an optical path of the laser light in the flow cell is condensed to the light-receiving element array. The laser light in the center of the detection region has an energy density of 3×10 | 03-31-2016 |
20160109365 | TURBIDIMETER - A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45° collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45° collecting minor, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45° concentration minor arranged coaxially to the annular 45° collecting minor and optically opposite to the annular 45° collecting mirror. The annular 45° collecting minor is arranged concentric to the light beam. The annular 45° concentration minor is configured to surround the scattering body. | 04-21-2016 |
20160116404 | AIR QUALITY ANALYZING APPARATUS - A system for measuring air quality, including a housing having an inlet, and outlet, and defining an air pathway therebetween, an air pump operationally connected in fluidic communication with air inlet and outlet for urging along the air flow pathway, a particle collector having an adhesive side positioned in the air flow pathway, and an electronic controller operationally connected to the optical sensor assembly for sending control signals to the optical sensor assembly and for receiving data from the optical sensor assembly. The system also includes an optical sensor assembly positioned for optical interrogate the particle collector, and further including a light source positioned to shine on the particle collector and an optical sensor positioned to receive light travelling from the particle collector. | 04-28-2016 |
20160116405 | METHOD OF ANALYZING AIR QUALITY - A method for monitoring air particulates, including positioning a particulate capture medium, flowing a predetermined volume of air over a particulate capture medium to yield a test sample, measuring the temperature and humidity of the air to generate environmental information, generating optical interrogation data from the test sample, storing the optical interrogation data, and analyzing the optical interrogation data to identify and quantify particulates. | 04-28-2016 |
20160123875 | Device for Measuring Scattered Light from a Measurement Volume with Compensation for Background Signals - A device for measuring scattered light from a measurement volume with compensation for background signals, includes a light sensor having separately evaluable light-sensitive elements, a single imaging optical system, wherein the light-sensitive elements are arranged in the image plane and the measurement volume is arranged in the corresponding object plane of the optical system, a light transmitter with a collimated light beam, this light-sensitive element detects scattered light from the measurement volume and background light from the overlapping visual ranges behind the subject plane, and the other light-sensitive element detects no or significantly less scattered light from the measurement volume and background light from the overlapping visual areas behind the object plane, and a diaphragm that restricts the visual ranges of the light-sensitive elements behind the object plane. | 05-05-2016 |
20160123876 | Non-Invasive Wine Taint Detector - A system includes a computing device including a memory configured to store instructions. The computing device also includes a processor to execute the instructions to perform operations including initiating transmission of incident light from one or more light sources to a sealed bottle containing liquid. The operations also include receiving scattered light from the liquid contained in the sealed bottle. The operations also include processing one or more signals representative of the scattered light to detect interactions of the incident light with a particular molecule. | 05-05-2016 |
20160131567 | METHOD AND APPARATUS FOR DETERMINING CLEANLINESS OF A SAMPLE - A method and apparatus for determining cleanliness of a sample is provided. The method includes taking a first reading of particles count of a sample placed into a chamber. The method further includes directing a stream of air over the sample, and taking a second reading of particles count of the sample. The method further includes calculating a difference between the first reading and the second reading, and determining a cleanliness of the sample based upon the difference. The method further includes option of taking an additional reading while a stream of ionized air is directed towards the sample. The method further includes trapping the impurities particles released from the sample by applying a vacuum through the filter, and analyzing the trapped particles to determine nature and chemical composition of the impurities particles. | 05-12-2016 |
20160131577 | DETECTION OF INDICATIONS OF PSYCHOACTIVE COMPONENTS IN A LIQUID - A method of contactless detection of indications of psychoactive components in a liquid and an apparatus therefor, by emitting a substantially monochromatic light at least at two different wavelengths and detecting the reflection in a free surface of the liquid by a photo detector, analyzing an output signal from the photo detector to identify output parts caused by light emitted from the first and second emitters, respectively, and determining whether the liquid contains at least one psychoactive component. | 05-12-2016 |
20160146732 | Particle Detector And Method For Detecting Particles - A particle detector for detecting particles in a gas may include a measurement chamber, a light source, at least one light sensor, and a first lens. The measurement chamber may have a gas inlet with a gas inlet nozzle, through which the gas flows into the measurement chamber along a flow direction. The light source may emit light along an optical beam direction. The first lens may have an electrically adjustable focus. | 05-26-2016 |
20160153887 | Flow Cytometry Systems and Methods for Blocking Diffraction Patterns | 06-02-2016 |
20160153905 | Scattered-Light Smoke Detector With A Two-Color Light-Emitting Diode | 06-02-2016 |
20160161393 | PARTICLE ANALYSIS APPARATUS AND PARTICLE ANALYSIS METHOD - There are provided a particle analysis apparatus and a particle analysis method that are capable of acquiring detection data with high reliability without performing high frequency superimposition. | 06-09-2016 |
20160169787 | METHODS FOR ALIGNING A LIGHT SOURCE WITH A FLOW STREAM AND SYSTEMS THEREOF | 06-16-2016 |
20160170168 | METHODS FOR OPTICALLY ALIGNING LIGHT COLLECTION COMPONENTS AND OPTICALLY ALIGNED LIGHT COLLECTION SYSTEMS THEREOF | 06-16-2016 |
20160178500 | PARTICLE SIZE DISTRIBUTION MEASURING APPARATUS | 06-23-2016 |
20160195474 | METHOD AND APPARATUS FOR TESTING OF ENGINE COMPONENTS | 07-07-2016 |
20160377541 | PARTICLE DETECTORS - A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band. | 12-29-2016 |
20160377551 | Non-Invasive Wine Taint Detector - A system includes a computing device including a memory configured to store instructions. The computing device also includes a processor to execute the instructions to perform operations including initiating transmission of incident light from one or more light sources to a sealed bottle containing liquid. The operations also include receiving scattered light from the liquid contained in the sealed bottle. The operations also include processing one or more signals representative of the scattered light to detect interactions of the incident light with a particular molecule. | 12-29-2016 |
20220136956 | METHOD AND SYSTEMS FOR CHARACTERIZING AND ENCODING A LIGHT DETECTION SYSTEM - Aspects of the present disclosure include methods for determining a parameter of a photodetector (e.g., a photodetector in a particle analyzer). Methods according to certain embodiments include detecting light from a light source with a photodetector for a first predetermined time interval, detecting a step signal with the photodetector, the step signal indicating a change in a parameter of the light source or a parameter of the photodetector, detecting light from the light source for a second predetermined time interval, integrating data signals over the first predetermined time interval and the second predetermined time interval and determining one or more parameters of the photodetector based on the integrated data signals. Systems (e.g., particle analyzers) having a light source and a photodetector for practicing the subject methods are also described. Non-transitory computer readable storage medium having instructions stored thereon for determining a parameter of a photodetector according to the subject methods is also provided. | 05-05-2022 |