| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356341000 | For light comparison means | 20 |
| 20090046289 | Optical Air Data Systems And Methods - Systems and methods for sensing air includes at least one, and in some embodiments three, transceivers for projecting the laser energy as laser radiation to the air. The transceivers are scanned or aligned along several different axes. Each transceiver receives laser energy as it is backscattered from the air. A computer processes signals from the transceivers to distinguish molecular scattered laser radiation from aerosol scattered laser radiation and determines air temperatures, wind speeds, and wind directions based on the scattered laser radiation. Applications of the system to wind power site evaluation, wind turbine control, traffic safety, general meteorological monitoring and airport safety are presented. | 02-19-2009 |
| 20090128813 | Refractive Index Matching in Capillary Illumination - System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light. | 05-21-2009 |
| 20090231581 | Turbidity sensor and electric home appliance having the same - Disclosed are a turbidity sensor, which correctly senses a turbidity of water although the surface of the turbidity sensor is covered with foreign substances, such as scale, and an electric home appliance having the turbidity sensor. The turbidity sensor includes a light emitting part emitting light, a first light receiving part receiving light emitted from the light emitting part and travelling straight, a second light receiving part receiving light emitted from the light emitting part and scattered, and a control unit determining a turbidity of water according to a ratio of the amounts of the light received by the plurality of light receiving parts. The first light receiving part is installed in a direction of directly receiving the light emitted from the light emitting part, and the second light receiving part is installed in another direction of not directly receiving the light emitted from the light emitting part. | 09-17-2009 |
| 20100020323 | INSTRUMENT FOR MEASURING PARTICLE PARAMETERS - Values for one or more particle properties, such as an aerosol asymmetry parameter g, can be measured directly using a detector that measures scattered light. The detector can comprise two or more diffusers coupled to optical sensors responsive to scattered light that is incident on the surfaces of the diffusers. One or more weighing functions can be obtained based on diffuser geometry. In an example, the diffusers correspond to quadrants of a circular toroid. | 01-28-2010 |
| 20100039645 | METHOD AND SYSTEM FOR PARTICLE DETECTION - An apparatus for detecting particles in an airflow is disclosed. The apparatus can include at least one light source for illuminating a one or more portions of the airflow, at least one photo-detector positioned to detect light scattered from one or more illuminated volumes of the airflow. The at least one light source and at least one photo detector are arranged such that a signal indicative of light scattered from a plurality of illuminated volumes can be derived from the output of the at least one photo detector. The apparatus also includes a signal processing apparatus configured to process said signals indicative of light scattered from a plurality of illuminated volumes to determine whether particles have been detected in the airflow. | 02-18-2010 |
| 20100195100 | Optical Air Data Systems And Methods - Systems and methods for sensing air includes at least one, and in some embodiments three, transceivers for projecting the laser energy as laser radiation to the air. The transceivers are scanned or aligned along several different axes. Each transceiver receives laser energy as it is backscattered from the air. A computer processes signals from the transceivers to distinguish molecular scattered laser radiation from aerosol scattered laser radiation and determines air temperatures, wind speeds, and wind directions based on the scattered laser radiation. Applications of the system to wind power site evaluation, wind turbine control, traffic safety, general meteorological monitoring and airport safety are presented. | 08-05-2010 |
| 20100321692 | Refractive Index Matching in Capillary Illumination - System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light. | 12-23-2010 |
| 20110267617 | Second-Order Nonlinear Susceptibility of a Nanoparticle Using Coherent Confocal Microscopy - A coherent confocal microscope and methods for measuring elements of the non-linear susceptibility of a nanoparticle, including, more particularly, all of the elements of the second-order susceptibility tensor of a single nanoparticle under permutation and Kleinman symmetry. Using a high numerical aperture lens, two-dimensional scanning and a vector beam shaper, the second-order nonlinear susceptibility is derived from a single confocal image. A forward model for the problem is presented and a computationally efficient data processing method robustly solves the inverse problem. | 11-03-2011 |
| 20130057859 | METHOD AND DEVICE FOR DETERMINING THE QUALITY OF MEASUREMENT RESULTS OF A SCATTERED LIGHT METER - A method for determining the quality of the measuring results of a scattered light meter for measuring the particle concentration in motor vehicle exhaust gases, which has at least one scattered light measuring chamber, at least one light source and at least one light sensor, includes the steps: determining the difference between two scattered light sensor signals, that were picked up in a reference state of the scattered light meter; determining the difference between two scattered light sensor signals, which were picked up in a used state of the scattered light meter; and comparing the difference of the signals picked up in the used state to the reference signal difference of the signals picked up in the reference state. | 03-07-2013 |
| 20130057860 | DEVICE AND METHOD FOR CALIBRATING A SCATTERED LIGHT METER - A calibration apparatus for calibrating a scattered-light measuring device that is embodied to measure a particle concentration in motor vehicle exhaust gases, comprises at least one scattering body that has a number of scattering centers having a defined size and a defined mutual spacing. The scattering centers are disposed in such a way that the scattering body, upon irradiation with light from a light source, delivers scattered light having an intensity and a distribution predetermined by the scattering body. | 03-07-2013 |
| 20130286391 | SMOKE DETECTOR WITH 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. | 10-31-2013 |
| 20130286392 | SMOKE DETECTOR WITH AMBIENT-LIGHT SENSOR - In accordance with certain embodiments, a smoke detector utilizes a reflected-light signal and sensed ambient light to determine the presence of smoke particles. | 10-31-2013 |
| 20130286393 | SMOKE DETECTOR UTILIZING BROADBAND LIGHT - In accordance with certain embodiments, a smoke detector utilizes broadband light with a plurality of wavelengths to determine the presence of smoke. | 10-31-2013 |
| 20130301048 | AUTOMATIC ANALYZER - The scattered light from the measurement target substance passes through a light receiving window, and is received by a detector for +θ scattered light and a detector for −θ scattered light which are arranged symmetrically to each other across an optical axis at an equal angle or an equal interval in a vertical direction. A light source is fixed by a light-source holder (that is a base member on which the light source is arranged), and the detectors are arranged on and fixed to a detector holder (that is a base member on which the detectors are arranged). In this manner, drift of the light quantity data caused by the thermal deformation of the optical system can be corrected by comparing values of the light quantity data of the detectors. | 11-14-2013 |
| 20140333929 | 3-D HOLOGRAPHIC IMAGING FLOW CYTOMETRY - Refractive index of biological specimens is a source of intrinsic contrast that can be explored without any concerns of photobleaching or harmful effects caused by extra contrast agents. This feature also contains rich information that can be related to the metabolism of cells at the cellular and subcellular levels. The present invention relates to systems and methods that can provide, without any moving parts, the 3-D refractive index map of continuously flowing biological samples in a micro-fluidic channel, for example. | 11-13-2014 |
| 20150346090 | ABSORPTION AND SCATTERING EFFECTS SEPARATION FROM DIFFUSE SPECTRUM DATA AND MODEL ESTABLISHMENT AND CONCENTRATION PREDICTION BASED THEREON - A method of processing diffuse spectrum data may include: obtaining diffuse spectrum data of a medium to be detected at one or more first radial positions; and determining optical information caused by substantially only a variation in scattering characteristic of the medium to be detected and/or optical information caused by substantially only a variation in absorption characteristic of the medium to be detected at one or more second radial positions from the obtained diffuse spectrum data. | 12-03-2015 |
| 20160097717 | METHOD AND APPARATUS FOR MEASURING APPEARANCE AND DISAPPEARANCE TEMPERATURES OF WAX FOR TRANSPARENT, TRANSLUCENT AND OPAQUE OILS - An apparatus and method for the measurement of wax appearance temperature and wax disappearance temperature. The apparatus includes the following. The sample receptacle having a receptacle opening, including a bottom, at least one side and an open top. The sample receptacle including an inlet and an outlet for sample insertion and removal. The at least one side about the receptacle opening being light absorbing. The sample receptacle including a transparent cover mounted over the open top. The bottom of the receptacle opening having a reflective upper surface. A thermo device temperature change of the sample. A thermometer to register current temperature of the sample. A viewing chamber above the transparent cover, where the viewing chamber is surrounded by material that is light absorbing. A light emitting device to project light through the viewing chamber and the transparent cover. | 04-07-2016 |
| 20160178802 | ROAD SURFACE REFLECTIVITY DETECTION BY LIDAR SENSOR | 06-23-2016 |
| 20160195467 | METHOD AND APPARATUS FOR DETERMINING CLEANLINESS OF A SAMPLE | 07-07-2016 |
| 20160195478 | SYSTEMS AND METHODS FOR LIQUID QUALITY ASSESSMENT | 07-07-2016 |
