Class / Patent application number | Description | Number of patent applications / Date published |
356440000 | With significant sample holder or supply | 70 |
20080204755 | Device for Analysis or Absorption Measurement on a Small Amount of Liquid | 08-28-2008 |
20080252892 | ABSORPTION SPECTROSCOPY APPARATUS AND METHOD - An absorption spectroscopy apparatus including an elliptical mirror centered on the midpoint between a source/detector and a mirror. The cavity between the elliptical mirror and the source/bolometer and mirror defines an interior volume of a sample cell. Electromagnetic radiation from the source/detector travels along a multi-segment path starting from the source/bolometer toward the elliptical mirror, reflecting off of the elliptical mirror and traveling toward the mirror, reflecting off of the mirror and traveling back toward the elliptical mirror and finally reflecting off the elliptical mirror for a second time and returning toward the source/bolometer. The multiple reflections combined with the focusing effects of the elliptical mirrored surface result in an efficient sampling device. Among other aspects and advantages, the apparatus of the present disclosure is able to use incoherent, non-collimated light sources while maintaining high optical throughput efficiencies. | 10-16-2008 |
20080273205 | OPTICAL DETECTION APPARATUS AND METHOD USING PHASE SENSITIVE DETECTION METHOD FOR DISK-TYPE MICROFLUIDIC DEVICE - An optical detection apparatus and method using a phase sensitive detection method for a disk-type microfluidic device are provided. The optical detection apparatus includes: a rotation driving unit stopping rotation of the microfluidic device when a detection area of the disk-type microfluidic device reaches a predetermined position; at least one light source turned on and off at a corresponding frequency to emit light to the detection area held at the predetermined position; an optical sensor disposed to face the detection area and generating an electrical signal according to intensity of incident light; and a signal processing unit receiving the electrical signal generated by the optical sensor and outputting only a signal having a same frequency as an on/off frequency of one of the at least one light source. | 11-06-2008 |
20080285038 | Ionizing radiations - A method of determining the radiation doses to which specific locations are subjected is provided. The method comprises providing an assembly comprising a plurality of layers, each of which includes a number of regularly spaced individual compartments that contain a liquid that changes in colour when exposed to radiation, radiating the assembly, determining the changes in optical density of the liquid in the individual compartments and calculating the doses of radiation to which the compartments have been subjected from the changes in optical density. | 11-20-2008 |
20080304068 | Biochip Production Method, Biochip, Biochip Analysis Apparatus, and Biochip Analysis Method - A biochip to be used for infrared reflection absorption spectroscopy analysis, which is obtainable by forming a metallic layer and an active layer made from a nonmetallic material and has a film thickness less than an infrared wavelength and remarkably flat surface on a solid base and immobilizing a probe on the active layer. A biochip analysis apparatus including the biochip, a liquid passing unit for supplying a sample liquid containing a test substance to the biochip, and an optical system entering infrared light to the biochip and detecting a reflected infrared light. A biochip analysis method using the apparatus. | 12-11-2008 |
20090009770 | Turbidimeter with ultrasonically cleaned components - An ultrasonic optical cleaning system is provided for cleaning and deterring the buildup of organic and inorganic particulates from the surface of glassware used in water testing instrumentation. The ultrasonic optical cleaning system includes a transducer that is attached to the surface of the glassware. A connector cap carrying a plurality of spring contacts interconnecting the transducer with an ultrasonic transducer control circuit. The control circuit operates continuously to provide an electrical signal to the transducer that vibrates the transducer and the glassware so that the glassware is cleaned of contaminates. | 01-08-2009 |
20090021741 | OPTICAL DETECTION APPARATUS, OPTICAL DETECTION METHOD, AND MICROFLUIDIC SYSTEM INCLUDING THE OPTICAL DETECTION APPARATUS - Provided are an optical detection apparatus, a microfluidic system including the same, and an optical detection method. The optical detection apparatus including: at least one light emission unit which emits light of a predetermined wavelength band; at least one light receiving unit which is disposed such that the light receiving unit receives the light emitted from the light emission unit and generates an electrical signal according to the intensity of the light received, wherein the number of light receiving units is the same as the number of light emission units; a rotation operating unit which rotates a disk-type microfluidic apparatus comprising at least one detection chamber in which a sample is to be loaded such that the detection chamber is disposed in a light pathway between the light emission unit and the light receiving unit; and a processor which measures a property of the sample contained in the detection chamber using the electrical signal generated by the light receiving unit. | 01-22-2009 |
20090027678 | Interactive Variable Pathlength Device - This disclosure relates generally to a sampling device, and, more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms, and methods for using such a device. | 01-29-2009 |
20090027679 | Small volume cell - A small internal volume cell having fluid entry, and exit ports wherein bubble traps are present in a bifurcated fluid pathway continuous with the fluid exit port. There further being present input and output apertures, for entering and exiting electromagnetic radiation, positioned to allow causing a beam of electromagnetic radiation to impinge on a sample substrate at a location thereon at which, during use, fluid contacts; as well as methodology of its use. | 01-29-2009 |
20090046291 | DEVICE FOR IMAGING AN INTERIOR OF A TURBID MEDIUM - The invention relates to a device ( | 02-19-2009 |
20090079985 | STIRRING STATE DETECTING METHOD - A stirring state detecting method of the present invention is a method for detecting a stirring state of a test solution by using: a sample cell ( | 03-26-2009 |
20090122317 | Spectroscopy Method and Spectroscope - To achieve an apparatus capable of measuring a light absorption coefficient f a sample with high sensitivity. A ring down spectroscope uses a wavelength-variable femtosecond soliton pulse light source | 05-14-2009 |
20090141282 | CONCENTRATION MEASURING STRUCTURE CAPABLE OF REDUCING THE EFFECT OF ENVIRONMENTAL TEMPERATURE - A concentration measuring structure capable of reducing the effect of environmental temperature features the arrangement of a concentration detector in the fluid communication space of a fluid circulating device in a fuel cell system to let the fluids in the concentration detector and the fuel cell achieve equal temperature, thereby reducing measurement error caused by the effect of environmental temperature. | 06-04-2009 |
20090153865 | ANALYSIS SYSTEM - Analysis system including a central control section for generally controlling the analysis that sends a command to perform a pre-injection operation, to an automatic sampler together with information designating a sample to be selected, such as an identification number, and simultaneously sends a command to perform an operation of measuring a dark current in a photodiode array (PDA) detector, to a multi-channel spectrophotometer. Thus, the automatic sampler performs the pre-injection operation, such as an operation of moving a needle to a position of a designated vial container to suck a sample, and the spectrophotometer performs the dark-current measurement operation during a time period of the pre-injection operation. After the sample is actually introduced into the column, in response to a command to perform a normal measurement operation, an operation of acquiring absorption data of an eluate from the column is started without performing the dark-current measurement operation. | 06-18-2009 |
20090161108 | Measurement Chip - The present invention concerns a measurement chip ( | 06-25-2009 |
20090168066 | MICROFLUIDIC PROTEIN CRYSTALLOGRAPHY - The use of microfluidic structures enables high throughput screening of protein crystallization. In one embodiment, an integrated combinatoric mixing chip allows for precise metering of reagents to rapidly create a large number of potential crystallization conditions, with possible crystal formations observed on chip. In an alternative embodiment, the microfluidic structures may be utilized to explore phase space conditions of a particular protein crystallizing agent combination, thereby identifying promising conditions and allowing for subsequent focused attempts to obtain crystal growth. | 07-02-2009 |
20090180120 | AUTOMATIC ANALYSIS APPARATUS AND AUTOMATIC ANALYSIS METHOD - An automatic analysis apparatus and an automatic analysis method analysis that includes an optical convergence point adjusting unit in order to variably adjust an optical convergence point of irradiation light or an optical convergence point of detection light to or from a reaction cuvette in accordance with at least one of analysis conditions of a kind of reaction of a mixed solution contained in the reaction cuvette, a liquid volume of the mixed solution or a measurement wave length. The optical convergence point adjusting unit is provided in front the reaction cuvette, in back of the reaction cuvette, or both in order to variably control the position of an optical convergence point so as to maximize the irradiation light based on the volume of the mixed solution in the reaction cuvette. By variably controlling the convergence point of the optical convergence point adjusting unit based on each of the examination items, both measurements of a turbidimetric assay and a spectrophotometric assay can be performed in a single automatic analysis apparatus with good accuracy and precision. | 07-16-2009 |
20090244539 | MICROCHIP TESTING DEVICE - A testing device equipped with: a microchip having a receiver for a test fluid, a discharge lamp which emits light into the microchip test fluid receiver, a light source housing in which the discharge lamp is located, and an arithmetic calculation mechanism, which calculates the concentration of the component to be detected, based on the intensity of the light emitted from the test fluid container unit. To reduce the size of the device and to shield the arithmetic calculation mechanism from electromagnetic waves generated around the light source, the light source housing is equipped with shielding connected to the ground on the outside of the light source housing made of insulating material. The light source housing is positioned within an enclosure of the testing device holding the microchip and containing the arithmetic calculation mechanism, analysis output device(s), etc. | 10-01-2009 |
20090323069 | OPTICAL CHARACTERISATION METHODS AND SYSTEMS | 12-31-2009 |
20100007891 | Methods of and Apparatus for Determining Properties Relating to Multi-Phase Systems - A method of, and apparatus for, determining properties relating to multi-phase systems are provided. In the method, an array of sample tubes each containing a sample of a multi-phase system is formed. An iterative process is used to generate at least two data sets of transmitted and/or backscattered values for each sample and the data sets for each sample are processed to determine at least one property of the sample. The apparatus has a support on which an array of sample tubes each containing a sample of a multi-phase system may be assembled. It also has a wave source and at least one wave detector for detecting transmitted and/or backscattered values for each sample and computer means for iteratively operating said wave source and said at least one detector to generate data sets of transmitted and/or backscattered values for each sample and for processing the data sets for each sample to determine at least one property of the sample. | 01-14-2010 |
20100027017 | Ozone Concentration Sensor - An apparatus and method provide measurement of a constituent of a fluid, such as ozone in ozonated water. The apparatus includes a vessel to contain the fluid, a light source configured to direct a first band of light and a second band of light along a substantially shared path though the fluid, and a photosensor that senses the first band of light and the second band of light. The constituent has a greater absorption associated with the first band of light than with the second band of light. The method includes modification of a measured attribute of the component in response to the sensed second band of light to improve the accuracy of the measured attribute. | 02-04-2010 |
20100110439 | OPTICAL MEASURING INSTRUMENT - The invention provides for an optical measuring instrument and measuring device. The optical measuring instrument for investigating a specimen contained in a sample comprises at least one source for providing at least one electromagnetic beam intended to irradiate the sample and to interact with the specimen within the sample, at least one sensor for detecting an output of the interaction between the specimen and the electromagnetic beam, an integrally formed mechanical bench for the optical and electronic components, a sample holder for holding the sample, wherein the at least one source, the at least one sensor, and the mechanical bench are integrated in one monolithic optoelectronic module and the sample holder can be connected to this module. | 05-06-2010 |
20100134799 | APPARATUS FOR DETECTING BIO MATERIALS AND METHOD FOR DETECTING BIO MATERIALS BY USING THE APPARATUS - Provided is an apparatus for detecting bio materials and a method for detecting bio materials by using the apparatus. The apparatus includes a bio material reacting unit, an optical source unit, and a detecting unit. The bio material reacting unit includes bio sensing materials immobilized on gold nanoparticles. The optical source unit emits light toward the bio material reacting unit. The detecting unit measures variations of surface absorbance of the gold nanoparticles by detecting light transmitted through the bio material reacting unit before and after a bio material is bound to the bio sensing materials. | 06-03-2010 |
20100149539 | APPARATUS FOR SENSING PRECIPITATION DENSITY OF SLUDGE IN WASTE WATER TREATMENT TANK AND METHOD THEREFOR - The present invention relates to an apparatus for sensing precipitation density of sludge in a wastewater treatment tank, more particularly to an apparatus and method for precisely taking density of sludge precipitated in a wastewater treatment tank without being contaminated by sludge. The present invention of an apparatus for sensing precipitation density of sludge in a waste water treatment tank comprises a container which is tube-shaped with a bottom thereof open and submerged in wastewater as filled with gas therein; and a sensor which is installed in the space in the container, and senses sludge density as not directly contacting with wastewater. | 06-17-2010 |
20100182606 | APPARATUS AND METHOD FOR MULTI-PARAMETER OPTICAL MEASUREMENTS - An apparatus and method are provided for optically measuring multiple parameters of a test sample at a regulated temperature. The test sample is held in a cuvette within a sample chamber or a fluidic channel on a fluidic chip. The temperature is sensed and modulated within a desired range. Either excitation light is directed through the test sample, and the emitted light is detected by a detector which converts the detected emission light into an output signal; or a probe light is directed to the test sample and at a detector. The output signal is transmitted to the control system which converts the output signal into output data representative of the fluorescence intensity, optical density and/or refractive index of the test sample. | 07-22-2010 |
20100245827 | AUTOMATIC OPTICAL MEASUREMENT SYSTEM AND METHOD - An automatic optical measurement system ( | 09-30-2010 |
20110013190 | Interactive variable pathlength device - This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms and methods for such a device. | 01-20-2011 |
20110026031 | PIPE SYSTEM, A FLUID SENSING SYSTEM FOR A PIPE SYSTEM, AND A METHOD OF DETERMINING A FLUID COMPONENT IN AN ANNULUS CAVITY OF A PIPE - The invention relates to a pipe system comprising
| 02-03-2011 |
20110075147 | POSITION DETECTOR, POSITION DETECTING METHOD AND ANALYZER - A position detector is for detecting a position of liquid held in a vessel. The position detector includes a sound wave generator disposed in contact with the vessel and having a plurality of sound generating elements for generating a sound wave by electrical energy; and a measuring unit that measures electrical characteristics of each of the sound generating elements based on the electrical energy reflected from each of the sound generating elements. The position detector also includes a determining unit that determines the presence or absence of the liquid at a position of each of the sound generating elements based on difference in the electrical characteristics measured at the measuring unit. | 03-31-2011 |
20110141475 | Modular Absorption Measuring System - The invention relates to a modular absorption measuring system ( | 06-16-2011 |
20110164251 | OPTICAL MULTI-PASS CELL - An optical multi-pass cell ( | 07-07-2011 |
20110199612 | METHOD FOR OPTICAL MEASUREMENT AND OPTICAL MEASUREMENT APPARATUS - An optical measurement apparatus can be provided, in which the sample is optically measured without loss of the illuminating light with high sensitivity. A glass plate as the transparent member | 08-18-2011 |
20110242539 | Handheld Optical Measuring Device and Method of Use - Embodiments provide a handheld optical measuring device and method of measuring an optical property of a liquid sample. In some embodiments the optical measuring device includes a handheld controller module having an immersible sensor head and a sampling member including a sample cup and an attachment member that couples the sample cup to the handheld controller module. In some embodiments the attachment member is an elongated rigid member that is hingedly coupled to the controller module, thus providing a folding configuration for enclosing the sensor head with the sample cup during measurements, transportation, and/or storage. In some embodiments the attached sample cup provides a protective shell for the immersible sensor head during use and/or when not in use. | 10-06-2011 |
20110249266 | FLUID SAMPLING AND ANALYSIS DOWNHOLE USING MICROCONDUIT SYSTEM - An apparatus and method for estimating a parameter of interest in a downhole fluid using fluid testing module. The fluid testing module may include: a substrate comprising at least one microconduit, and a sensor. The sensor may be disposed within the at least one microconduit or external. The apparatus may include a fluid transporter for moving fluid within the microconduit. The method includes estimating a parameter of interest using the fluid testing module. | 10-13-2011 |
20110317166 | OPTICAL MEASUREMENT DEVICE - An optical measurement device is adapted to measure characteristics of a measurement targeted fluid based on a transmitted inspection light. The device comprises a cell having an internal space for accommodating the measurement targeted fluid to flow therein and having a pair of opposing through holes for transmitting the inspection light, each of the through holes sealed with a transparent member. The device includes a projection optical system member having a port for projecting the inspection light and a light-receiving optical system member having a port for receiving the inspection light transmitted through the internal space. A base member is provided for supporting the cell, the projection optical system member, and the light-receiving optical system member in a configuration with gaps between the cell and the respective optical system members to accommodate movement in a predetermined range along a direction perpendicular to an optical axis of the inspection light. | 12-29-2011 |
20120038925 | Method for examining liquids and apparatus therefor - A method and apparatus for determining a property of a medium, the apparatus including: a light source in a housing, for irradiating a space along a measuring path; a receiver in a housing, for registering intensity of light which has traversed the measuring path; wherein the measuring path enters through a first window section in a wall of the housing of the light source into the space, and wherein the measuring path leaves from the space through a second window section in a wall of the housing of the receiver. A medium to be measured is introducible in such a manner into the space, that the measuring path for a media measurement extends through the measured medium. At least one reference absorber, which is introducible at times into the space; and wherein the measuring path for at least one reference measurement extends through the reference absorber, when the reference absorber is brought into the space. | 02-16-2012 |
20120069340 | FLOW CELL EXPLOITING RADIATION WITHIN CELL WALL - A flow cell ( | 03-22-2012 |
20120127470 | Optical System Design for Wide Range Optical Density Measurements - This invention relates to optical cell geometry and to the arrangement of optical elements in an absorbance (at 200 nm to 50000 nm) detector. The invention allows to significantly expand the dynamic range of an optical density measuring instrument without affecting the signal to noise ratio. The invention also allows to enhance the precision of said instrument by eliminating the artifacts that arise from partial reflections of the incident beam, which occur on the passage of the beam through interfaces between different media. | 05-24-2012 |
20120170044 | Polymer Analysis Chip - A microfabricated analysis chip with integrated waveguides for evanescent field absorption detection is provided. Fabrication of the microfluidic device may be performed by micropatterning a layer of photoresist or other suitable material using a single step photoresist process to produce a microchannel and an optical structure (e.g., a U-bend waveguide) in the microfluidic device. The microfluidic device couples a micro-channel network with a waveguide in a collinear fashion to maintain higher path length and incurring little or no scattering, dispersion, and divergence losses. A sample can be passed through the microchannel while light is transmitted through the waveguide. Any change in refractive index as well as change in optical absorbance property of fluid flowing in the microchannel can be detected by detecting changes in light output power (e.g., changes in absorbance). A change in concentration of solution in the microchannel can be determined by detecting a change in light absorbance output. | 07-05-2012 |
20120182556 | LED DENSITOMETER FOR MICROTITER PLATE - Light emitting diodes (LEDs) are mounted in an array to an upper structure overlying a lower structure with a plurality of light detectors thereon. Each LED is configured to overlie a separate detector. Each LED emits light at a frequency relevant for measuring optical density of a specimen. LEDs having different frequencies are included within the LED array. A corresponding array of detectors is also provided, mounted to the lower structure. Spacing between adjacent LEDs and between adjacent detectors match a spacing between wells in a microtiter plate. Spacing between the lower structure and the upper structure supporting the LEDs is sufficient for the microtiter plate to fit between. Circuitry sequentially fires individual LEDs and gathers optical density data through the detectors for specimens in the wells of the microtiter plate. The structures are then moved to a next adjacent well position on the microtiter plate and the process repeated. | 07-19-2012 |
20120218553 | SAMPLE CHAMBER FOR MONITORING THE CONCENTRATION OF COMPONENTS OF ADDITIVES IN A PRINTING PROCESS LIQUID - The invention concerns a sample chamber used for monitoring the concentrations of components of additives in a printing process liquid for maintaining predetermined desired concentrations of components of additives in a printing process liquid, wherein the actual concentrations of components are determined followed by redosing of measured components to a predetermined desired concentration. | 08-30-2012 |
20120224179 | PIPETTE, APPARATUS AND KIT FOR LIGHT MEASUREMENT AND METHOD - The present invention relates to a pipette ( | 09-06-2012 |
20120236312 | MICROCHIP, LIQUID SAMPLE SUPPLY DEVICE, SUPPLY METHOD OF LIQUID SAMPLE, AND ANALYSIS DEVICE - A microchip which includes, a liquid flow path through which a liquid sample including a sample flows; and a gas flow path in which compressed gas flows, wherein liquid sample inlet which communicates with the starting end of the liquid flow path and a gas supply port which communicates with a terminal of the gas flow path are formed on the same plane, and a sealing material is disposed so as to enclose the liquid sample inlet and the gas supply port. | 09-20-2012 |
20120250023 | LIGHT SCATTERING FLOW CELL DEVICE - A flow cell device includes a body having a hollow bore in which a liquid sample may reside. An electromagnetic beam may be directed through the body and into the bore to irradiate the liquid sample. The beam may be directed orthogonal to an axis of the bore. A light ray produced as a result of the irradiation may likewise be directed orthogonal to the bore axis along the same plane as the beam, and received by a detector. The body may be secured between a liquid inlet structure and a liquid outlet structure. | 10-04-2012 |
20120257202 | CONCENTRATION MEASURING DEVICE, CONCENTRATION MEASURING ARRANGEMENT AND CONCENTRATION MEASURING METHOD - A concentration measuring device for determining a concentration of gas or particles in a measurement volume includes at least one housing having an opening for communication with the measurement volume, a light source for transmitting measurement light through the housing into the measurement volume, a light receiver for receiving the measurement light after its passage through the measurement volume and an evaluation unit which is designed for determining the concentration of gas or particles from the measurement light received at the light receiver. In accordance with the invention at least one body of solid material is arranged in the at least one housing such that the measurement light path largely passes through the at least one solid body within the housing, with the portion of the measurement light path within the at least one housing not passing through the at least one solid body having a specified total length. | 10-11-2012 |
20130033708 | SAMPLE ANALYSIS APPARATUS - A sample analysis apparatus configured to automatically press a start button upon installation of a sample tube is provided. The sample analysis apparatus includes: a body of the sample analysis apparatus; a door housing which may be provided in an opened state or a closed state, and configured to be coupled to the body of the sample analysis apparatus by a hinge; a tube accommodating unit included in the door housing and configured to accommodate the sample tube; a start button included in the body of the sample analysis apparatus and configured to start analysis of the sample; and an operating member positioned at a first position which is distant from the start button the sample tube is not installed in the tube accommodating unit, and a second position which is configured to operate the start button when a sample tube is installed and the door housing is closed. | 02-07-2013 |
20130229659 | OPTICAL MEASURING DEVICE - A device, system and method to measure an optical characteristic of a fluid, the device including a plurality of components consecutively arranged and coupled together via quasi kinematic or kinematic coupling. The consecutively arranged components define a void within the device. The void encloses a measuring set-up for measuring at least one optical characteristic of a fluid passing through a gap. The gap is located at an intersection between an optical path of the measuring set-up and a flow path of the fluid. | 09-05-2013 |
20130265580 | DEVICE FOR PHOTOMETRICALLY OR SPECTROMETRICALLY EXAMINING A LIQUID SAMPLE - The invention relates to a device ( | 10-10-2013 |
20140002824 | METHOD FOR FORMING A NANOSTRUCTURE PENETRATING A LAYER | 01-02-2014 |
20140063504 | VITRO MEASUREMENT OF SUNSCREEN PROTECTION - Substrates and methods for in vitro determination of sunscreen protection factors (SPF) are disclosed. | 03-06-2014 |
20140078505 | OPTICAL DEVICE, METHOD OF FORMING AN OPTICAL DEVICE, AND METHOD FOR DETERMINING A PARAMETER OF A FLUID - According to embodiments of the present invention, an optical device is provided. The optical device includes an optical fiber comprising a core for propagation of light and a cladding surrounding the core, and at least one microchannel defined in the optical fiber extending at least partially through the cladding, wherein the at least one microchannel has a concave-shaped surface arranged to interact with an optical field of the light. According to further embodiments of the present invention, a method of forming an optical device and a method for determining a parameter of a fluid are also provided. | 03-20-2014 |
20140104617 | FLOW CELL MODULES AND LIQUID SAMPLE ANALYZERS AND METHODS INCLUDING SAME - A flow cell module for use in a liquid sample analyzer includes a module housing, a liquid core waveguide mounted in the module housing to receive a flow of a liquid sample from a liquid sample source, an input optical fiber disposed in the module housing to transmit radiation from a radiation source to the liquid core waveguide, an input termination located on an input end of the input optical fiber, a first kinematic connection mechanism operative to bias the input termination in a first direction along a first axis while permitting displacement of the input termination in a first opposing direction along the first axis, and a second kinematic connection mechanism operative to bias the input termination in a second direction along a second axis while permitting displacement of the input termination in a second opposing direction along the second axis. The second axis is transverse to the first axis. | 04-17-2014 |
20140176952 | MICROFLUIDIC ABSORPTION CELL - An absorption cell for microfluidic chemical analysis made from tinted or coloured polymers, for example polymethylmethacrylate (PMMA), in which microfluidic channels are cut. Light is coupled into the absorption cell via two windows (typically 200 um thick) that are retained at either end of the channel. Absorption is measured using a light source, such as a light emitting diode (LED) and a photodiode butted against the windows. Spurious scattered and/or reflected light is absorbed by the coloured polymer over the length of the measurement cell, while very little light loss occurs at the coupling windows. | 06-26-2014 |
20140320861 | METHODS AND SYSTEMS FOR THE COLLECTION OF LIGHT USING TOTAL INTERNAL REFLECTANCE - Aspects of the present disclosure include a flow cell nozzle configured to propagate light emitted by a sample in a flow stream upstream by total internal reflectance. Flow cell nozzles according to certain embodiments include a nozzle chamber having a proximal end and a distal end and a nozzle orifice positioned at the distal end of the nozzle chamber where the flow cell nozzle is configured to propagate light emitted from a sample in the flow stream upstream through the flow cell nozzle orifice by total internal reflectance toward the proximal end of the nozzle chamber. Systems and methods employing the subject flow cell nozzles are also provided. | 10-30-2014 |
20140375997 | CALCULATING THE OPTICAL DENSITY OF A FLUID TRAVELING THROUGH A GAP - A method and apparatus to calculate the optical density of a fluid ( | 12-25-2014 |
20150300943 | OPTICAL WAVEGUIDE COMPRISING A NANO-CHANNEL AND OPTOFLUIDIC SENSOR USING SUCH AN OPTICAL WAVEGUIDE - An optical waveguide including a first substrate incorporating a first optical guiding structure exposed at a surface of the first substrate, a second substrate incorporating a second optical guiding structure exposed at a surface of the second substrate, the two substrates being assembled superimposed by their surfaces such that the two optical guiding structures are facing each other and extend in a same direction. A channel is fitted between the first and the second guiding structure, directed along the direction, the channel having a cross-section with a large dimension substantially parallel to the surface of the first substrate and to the surface of the second substrate, enabling light to interact on a given distance with the fluid. Such a waveguide can, for example, find application to fluid analysis. | 10-22-2015 |
20150316470 | METHOD AND DEVICE FOR CHARACTERISING A FLUID MEDIUM USING A PHOTOELECTRIC TRANSDUCER - A device for characterizing a fluid medium with the help of a photoelectric transducer comprises at least one semiconductor substrate possessing at least one space charge zone and presenting a reception surface for receiving the fluid medium in order to constitute an interface between the substrate and the fluid medium, a production system for producing a spot light beam that is amplitude-modulated and that lights at least one zone of the interface through the fluid medium, a measurement system for measuring values of a photoelectric magnitude delivered while performing the lighting so as to create a matrix of values of the photoelectric magnitude, and a processor system for processing values of the photoelectric magnitude delivered by the measurement system and adapted to use the matrix to determine an electronic signature characteristic of the fluid medium. | 11-05-2015 |
20150346075 | Flow Cytometry Sample Separation Methods and Apparatus - A method for identifying sample boundaries of a plurality of samples is provided. The method includes moving a plurality of samples comprising particles into a fluid flow stream using a sampling probe and introducing marker beads into the fluid flow stream between adjacent samples in the plurality of samples via the sampling probe to produce a marker bead-separated plurality of samples in the fluid flow stream. Marker beads may be introduced into the fluid flow stream by introducing the marker beads from a chamber surrounding at least a portion of the sampling probe, or by introducing the marker beads from a cartridge having a pierceable membrane underlying at least one chamber, the at least one chamber containing marker beads. Sampling systems and apparatuses are also provided. | 12-03-2015 |
20150362471 | WATER QUALITY MEASURING DEVICE - A water quality measuring device comprises a measurement cell ( | 12-17-2015 |
20160003970 | IN-SITU CALIBRATION OF TOOLS - A tool sensor calibration system and tool calibration method are disclosed herein. A tool sensor calibration system ( | 01-07-2016 |
20160025622 | SENSING SYSTEMS AND METHODS USING A COUPLING STRUCTURE - A sensor system having coupling structures is disclosed. The system includes an input coupling structure, an interaction region, and an output coupling structure. The input coupling structure is configured to receive emitted light at a selected coupling efficiency and may provide filtering of the emitted light for a selected wavelength. The interaction region is coupled to the input coupling structure and configured to interact the light from the input coupling structure with a specimen. The output coupling structure is coupled to the interaction region and configured to provide interacted light from the interaction region to the detector. | 01-28-2016 |
20160025994 | SELF-ALIGNED SPATIAL FILTER - A spatial filter is made by forming a structure comprising a focusing element and an opaque surface, the opaque surface being disposed remotely from the focusing element in substantially the same plane as a focal plane of the focusing element; and by forming a pinhole in the opaque surface at or adjacent to a focal point of the focusing element by transmitting a substantially collimated laser beam through the focusing element so that a point optimally corresponding to the focal point is identified on the opaque surface and imperfection of the focusing element, if any, is reflected on the shape and position of the pinhole so formed. | 01-28-2016 |
20160047738 | HPLC REVERSE-FLOW FLOW CELL - Improved flow cells, as well as systems and methods for using the improved flow cells, are provided. | 02-18-2016 |
20160054275 | METHOD FOR EXTENDING THE DYNAMIC RANGE OF ABSORBANCE DETECTORS - The invention generally provides methods for improving the dynamic range of an absorbance detector and absorbance detectors having improved dynamic range. In an exemplary embodiment, the method includes receiving calibration data for a plurality of samples, the calibration data comprising an absorbance for a concentration of each of the samples, calculating a contribution of stray light to the calibration data, and correcting subsequent data by removing the contribution of stray light. | 02-25-2016 |
20160069803 | FLUID CONCENTRATION MEASURING DEVICE - A fluid concentration measuring device measures the concentration of a fluid flowing through a duct having a light-transmissive, deformable duct wall. The device includes a light source; a light receiving element which receives the light, which passed through the wall of the duct and the fluid inside the duct, and outputs a signal indicating the intensity of the light; light path distance setting means and fluid concentration output means which obtains a plurality of relational expressions, which indicate the relation between the light intensity and the fluid concentration when the light from the light supply part is received by the light receiving part over each of the light path distances, and obtains the fluid concentration from the light intensity at the light receiving part based on the relational expressions for the plurality of light path distances and outputs the fluid concentration. | 03-10-2016 |
20160139040 | BIODIESEL DETECTOR - A device and method of use are provided for measuring the concentration of fatty acid methyl ester (FAME) in jet fuel to a limit of detection of 1 ppm. The device measures concentration of FAME in jet fuel via Fourier transform infrared spectroscopy (FTIR) with a spectral resolution of 1 cm | 05-19-2016 |
20160153890 | REDUCED VOLUME SPECTROSCOPIC SAMPLE CELL | 06-02-2016 |
20160153895 | APPARATUS AND METHOD FOR PERFORMING A LIGHT-ABSORPTION MEASUREMENT OF A SPECIFIED AMOUNT OF SAMPLE SUBJECT TO PRESSURE FORCE | 06-02-2016 |
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