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| Number | Title | Issue Date |
| 8154724 | Two-dimensional optical imaging methods and systems for particle detection The present invention provides methods and systems for particle detection and analysis using two-dimensional optical imaging to access enhanced detection sensitivity and expanded sensing functionality relative to conventional point and array detection-based optical ... | 04/10/2012 |
| 8149402 | 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 sys... | 04/03/2012 |
| 8035816 | Method and apparatus for measuring the optical absorption of samples In a method and apparatus for measuring the optical absorption of samples having a light source (1), a photoelectric converter (8), a measurement beam path extending between the light source (1) and the converter (8), in which path the sa... | 10/11/2011 |
| 8031340 | Optical system for a flow cytometer An optical system for a flow cytometer having a flow channel with an interrogation zone and an illumination source that impinges the flow channel in the interrogation zone includes a lens system and a detection system. The lens system preferably includes at least tw... | 10/04/2011 |
| 7847936 | Evaporative light scattering device and methods of use thereof Apparatus for the detection of analytes in a fluid, for example the eluant from a liquid chromatography is described. Solvent is evaporated from the eluant to produce a stream of particles when analyte is present in the fluid. The resultant stream of particles is pa... | 12/07/2010 |
| 7440100 | Method for evaluation of a scattered light signal and scattered light detector used for carrying out said method A method of evaluating a scattered light signal generated by a scattered light receiver when detecting especially fine particles in a carrier medium, wherein the scattered light signal runs through a filter algorithm operation to evaluate the scattered light signal ... | 10/21/2008 |
| 7423751 | Systems and methods for use in detecting harmful aerosol particles The invention provides systems and methods for detecting aerosols. The systems and methods can be used to detect harmful aerosols, such as, bio-aerosols. ... | 09/09/2008 |
| 7417734 | System and process for sorting biological particles A system which irradiates light onto a liquid flow containing a biological particle, detects the light therefrom to collect biological information thereon, and sorts the biological particle based upon the biological information, comprises an optical detector for det... | 08/26/2008 |
| 7397561 | Spectroscopy system Systems and techniques for improved spectroscopy. In some embodiments, mechanical and/or optical zoom mechanisms may be provided for monochromator systems. For example, movable detector systems allow a detector to be positioned with respect to a dispersive element i... | 07/08/2008 |
| 7365835 | Dark-field laser-scattering microscope for analyzing single macromolecules To further isolate the scattered light 112 of a specific particle from the scattered light of a different particle, a pin hole device 116 can be used. The pin hole device 116 prevents unfocused light from other particles from entering the second... | 04/29/2008 |
| 7355706 | Particle detection system implemented with an immersed optical system Fluid-based particle detection exhibits improved light collection and image quality from a light collection system that uses immersed optics on a flow-through cell for collecting and detecting scattered light from particles carried by the fluid. The flow-through cel... | 04/08/2008 |
| 7356365 | Method and apparatus for tissue oximetry In accordance with the invention, the oxygenation of blood-profused tissue is measured by shining light into the profused tissue and analyzing the light reflected within the tissue. The light is reflected by cell walls in the tissue and is partially absorbed by hemo... | 04/08/2008 |
| 7352476 | Device for detecting atmospheric turbulence The invention relates to a device for remote measurement of the properties of the atmosphere, more particularly a device used to detect atmospheric turbulence. The device operates on the lidar principle, using the backscattering of a laser beam by the air. The devic... | 04/01/2008 |
| 7333189 | Spectroscopic diagnostic methods and system The present invention provides systems and methods for the determination of the physical characteristics of a structured superficial layer of material using light scattering spectroscopy. The light scattering spectroscopy system comprises optical probes that can be ... | 02/19/2008 |
| 7330262 | Methods and apparatus for determining the content materials of a liquid employing a piston movable within a measuring chamber The contents of a liquid medium are determined using a light source and an optical detector, for example a spectrometer. A longitudinally displaceable piston sucks the medium into a cylindrical glass measuring chamber and evacuates the liquid from the chamber. At le... | 02/12/2008 |
| 7319522 | Systems and methods for in situ spectroscopic measurements A circularizated semiconductor laser diode (CSLD), such as for example a vertical cavity surface emitting laser (VCSEL) may be used for optical measurements. The CSLD may be used in a cell density probe to perform cell density determination and/or turbidity determin... | 01/15/2008 |
| 7301641 | Fiber optic smoke detector A passive sensor housing has an air gap formed therein between a collimating lens and a lens focused mirror reflecting optical light signals transmitted through the lens into the air gap within which smoke is received through screened openings in the housing. The op... | 11/27/2007 |
| 7302360 | Defect size projection A system and method of inspecting semiconductor wafers that is capable of determining a scattering power associated with a wafer surface defect whether or not the scattering power associated with the defect exceeds the dynamic range of the system. The scattering pow... | 11/27/2007 |
| 7294513 | Method and apparatus for characterizing solutions of small particles A method and apparatus is described by which means molecules in suspension may be characterized in terms of the size and mass distributions present. As a sample solution is separated by centrifugal means, it is illuminated at a particular radial distance from the ax... | 11/13/2007 |
| 7283229 | Small object identifying device and its identifying method A small object identifying device and its identifying method according to which a large number of small objects can be identified. In one embodiment, the device includes a dispersion region section which disperses a large quantity of several kinds of small objects w... | 10/16/2007 |
| 7268881 | 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 p... | 09/11/2007 |
| 7254429 | Method and apparatus for monitoring glucose levels in a biological tissue In accordance with the invention, a low coherence interferometer is used to non-invasively monitor the concentration of glucose in blood by shining a light over a surface area of human or animal tissue, continuously scanning the light over a two dimensional area of ... | 08/07/2007 |
| 7248363 | Particle size analyzer A laser diffraction particle size analyzer irradiates a laser beam on particles in a scattered state, and measures a spatial intensity distribution of diffracted and scattered light from the particles. A particle size distribution of the particles is calculated from... | 07/24/2007 |
| 7244122 | Methods for determining optical characteristics of dental objects Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth... | 07/17/2007 |
| 7240839 | Color measurement apparatus operable as a pointing device, a computer display measurement device and a printer output measurement device A color measurement apparatus is adapted as an attachment for a personal computing system. An interface integral to the color measurement apparatus couples the color measurement apparatus to the personal computing system. A computer pointing device integral to the c... | 07/10/2007 |
| 7232687 | Multiple sorter monitor and control subsystem for flow cytometer An optical illumination and monitoring subsystem controls the operation of a flow cytometer having a carrier fluid that flows along a channel coupled to a droplet generator, which controls a point at which droplets break off from the carrier fluid, and a droplet sor... | 06/19/2007 |
| 7224454 | Apparatus and process for analyzing a stream of fluid An analyzing probe for insertion into numerous different environments to determine at least one characteristic of particulate matter suspended in a fluid stream of a test sample. Preferably, the analyzing probe includes a minimal amount of optical elements such as l... | 05/29/2007 |
| 7221453 | Optical apparatus Various optical apparatus provide a source of parallel light (7, 75). The parallel light (7, 75) is generally achieved by directing an incident beam at the apex of a prism (1, 22, 24, 26, 28). The prism may have varying configurations. One confi... | 05/22/2007 |
| 7187441 | Particle analysis system and method A system (20) and method are disclosed for the self-calibrating, on-line determination of size distribution f(x) and volume fraction φ of a number of particles (P) dispersed in a medium (M) by detecting one or more propagation characteristics of multi... | 03/06/2007 |
| 7180591 | Semiconductor processors, sensors, semiconductor processing systems, semiconductor workpiece processing methods, and turbidity monitoring methods Semiconductor processors, sensors, semiconductor processing systems, semiconductor workpiece processing methods, and turbidity monitoring methods are provided. According to one aspect, a semiconductor processor includes a process chamber configured to receive a semi... | 02/20/2007 |
| 7151604 | Optical system and method for particle detection In accordance with various embodiments, particle detection systems and method for particle detection are provided. In exemplary embodiments, the particle detection system includes at least one detector and a light source that provides light. The exemplary system can... | 12/19/2006 |
| 7145653 | In situ particle monitoring for defect reduction A system and method is provided for monitoring and controlling the contaminant particle count contained in an aerosol during a photoresist coating and/or development process of a semiconductor. The monitoring system monitors the contaminate particle count present in... | 12/05/2006 |
| 7142307 | Method and apparatus for optical interactance and transmittance measurements Apparatus and a method are disclosed for the simultaneous or rapid sequential use of two or more different separations between the source and detector of the measuring apparatus to obtain spectral measurement data in diffuse transmission or “interaction” modes o... | 11/28/2006 |
| 7133132 | Light-force sensor and method for measuring axial optical-trap forces from changes in light momentum along an optic axis An optical trap and method for measuring both transverse and longitudinal forces on a trapped particle. Laser light sources generate first and second light beams that are focused to the trap region in a counter-propagating manner for trapping the particle. Detectors... | 11/07/2006 |
| 7130046 | Data frame selection for cytometer analysis A system for detecting when a core stream in a channel of a flow device is adequate for sufficient data accession. The system may determine the time period from the beginning of a sample run in a channel of a flow device to when the core stream is adequate. Data of ... | 10/31/2006 |
| 7126687 | Method and instrumentation for determining absorption and morphology of individual airborne particles Characterizing individual airborne particles in real time according to their absorption of optical energy at one or more wavelengths. The instrument can measure the two-dimensional angular optical scattering (TAOS) and/or the one-dimensional angular optical scatteri... | 10/24/2006 |
| 7122384 | Resonant light scattering microparticle methods Microparticle-based analytical methods, systems and applications are provided. Specifically, the use of resonant resonant light scattering as an analytical method for determining either or both a particle's identity and the presence and optionally, the concentration... | 10/17/2006 |
| 7119900 | Pollen sensor and method A pollen sensor and method for detecting pollen which discriminates pollen particles floating in air from other particles on a real time basis. The pollen sensor includes an illumination position for generating a light beam, a first receiver for measuring the intens... | 10/10/2006 |
| 7113283 | Apparatus and method for measuring color Color measuring systems and methods are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object being measured. Light from the perimeter fiber optics pass to a variety o... | 09/26/2006 |
| 7110096 | Method for determing optical characteristics through a protective barrier Color/optical characteristics measuring systems and methods are disclosed. Perimeter receiver fiber optics/elements are spaced apart from a central source fiber optic/element and received light reflected from the surface of the object is measured. Light from the per... | 09/19/2006 |
