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7564539 |
Optical air data systems and methods
A method for remotely sensing air outside a moving aircraft includes generating laser radiation within a swept frequency range. A portion of the laser radiation is projected from the aircraft into...
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7557734 |
Airborne visibility indicator system and method
A system for providing an objective visibility measurement to a flight crew preferably includes a LIDAR system ( 100 ), an evaluation unit ( 150 ), and a crew interface ( 200 ). In at least one...
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7545570 |
System for selectively blocking electromagnetic energy
A system for selectively blocking electromagnetic energy. The system includes a first mechanism for employing a perforated component to pass a beam characterized by a first property and reject a...
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7440102 |
Systems and methods for analyzing polarized light scattered from a sample
Systems for analyzing polarized light back-scattered from a sample are provided. An exemplary system comprises an optical beamsplitter, a polarization separator and an array of light detectors. The...
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7428041 |
Lidar
A lidar, which includes a transmitter and a receiver, as well as an optical system, which is arranged to direct at least part of the light sent by the transmitter as a transmitter beam progressing...
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7400400 |
Method for monitoring particle size
The present invention provides methods for the use of visible and/or near-infrared spectroscopic methodology to monitor and control processes for the generation of particles, including processes...
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7394535 |
Optical metrology using a photonic nanojet
An inspection area on a semiconductor wafer can be examined using a photonic nanojet. The photonic nanojet, an optical intensity pattern induced at a shadow-side surface of a dielectric...
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7391506 |
Laser radar device and method
A coherent laser radar or lidar device ( 2;20;84;90 ) for measuring wind speed is described that comprises a transmitter for transmitting a beam of light to a remote probe volume ( 6;54 ), a...
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7372566 |
Cytometer
A flow cytometer capable of forming a drop containing two or more particles comprising: (a) means ( 38 ) for moving particles in a liquid flow stream ( 35 ); (b) detector or analyser means ( 46 A, ...
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7361472 |
Methods for providing extended dynamic range in analyte assays
Methods for enhancing the dynamic range for specific detection of one or more analytes in assays using scattered-light detectable particle labels. The methods involve utilizing variations in...
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7350972 |
Distributed temperature sensor using optical reflectometry
A temperature sensing method in which pulses of optical radiation are launched by a laser diode ( 11 ) into an optical fibre ( 14 ) and optical radiation backscattered from the fibre is detected,...
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7339670 |
Wavelength normalized depolarization ratio lidar
A remote sensing optical system and method is disclosed that permits detection and discrimination of aerosols. The system outputs a plurality of wavelengths and is equipped with a polarization...
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7339668 |
Spectrometer for analysis of multiple samples
A spectrometer ( 100 ) includes a light source ( 102 ) providing output light ( 106 ) to the bundled input ends ( 108 ) of multiple light pipes ( 110 ). The light pipes ( 110 ) branch into sets (...
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7336351 |
Laser remote sensing of backscattered light from a target sample
A laser remote sensing apparatus comprises a laser to provide collimated excitation light at a wavelength; a sensing optic, comprising at least one optical element having a front receiving surface...
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7333184 |
Ground surface cover type reflectivity variation correction in a differential absorption LIDAR system
A method for improving the accuracy of estimating concentration path length of a target molecule using a differential absorption LIDAR (DIAL) system. In particular, this method allows improved...
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7315374 |
Real-time monitoring optically trapped carbon nanotubes
An embodiment of the present invention is a technique to monitor carbon nanotubes (CNTs). A carbon nanotube (CNT) is manipulated in a fluid by a laser beam. An illuminating light from a light...
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7312868 |
Method and device for measuring a light flux backscattered by a dispersed medium, unperturbed by interface reflections
A method for measuring a light flux backscattered by a dispersed medium located on one first side of a wall, by interaction with a plurality of light rays emitted from the second opposite side of...
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7312855 |
Combined coherent and incoherent imaging LADAR
A long range eye-safe laser radar (LADAR) system for use in an environment where real-time non-cooperative identification of an object is required. In particular, a laser beam is aimed at an...
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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...
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7301630 |
Light scattering analysis and measurement
A light scattering apparatus capable of measuring light scattering of opaque samples. In the apparatus, control section 190 controls an optical path length required for laser light output from...
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7285790 |
Optical measurement system for living bodies and method thereof
A response period is determined arbitrarily. A satisfactory detecting ability may not be provided because of an artifact or the like contained in a signal. Therefore, an effective detection method...
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7284903 |
Distributed optical fibre measurements
A method of obtaining a distributed measurement comprises deploying an optical fibre in a measurement region of interest, and launching into it a first optical signal at a first wavelength λ 0 ...
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7274448 |
Short range LIDAR apparatus having a flat spatial response
A flat spatial response LIDAR apparatus for detecting particles within a short range is provided. The apparatus includes a light source projecting a light beam which is back-scattered by the...
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7268873 |
Method for characterising particles in suspension from frequency domain photon migration measurements
Methods are provided for measuring isotropic scattering coefficients of suspensions using multiply scattered radiation that is modulated in amplitude at selected modulation frequencies. The...
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RE39672 |
Method and devices for laser induced fluorescence attenuation spectroscopy
The Laser Induced Fluorescence Attenuation Spectroscopy (LIFAS) method and apparatus preferably include a source adapted to emit radiation that is directed at a sample volume in a sample to produce...
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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...
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7183534 |
Photodetector, method of using the same, and image forming apparatus
A photodetector includes a light emitting portion for applying light, a light receiving portion for sensing the light, and a light guiding member 3 for guiding the light from the light emitting...
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7167099 |
Compact particle sensor
A compact particle sensor for detecting suspended particles includes a housing, a light source, a light receiver and a plurality of optical elements. The housing provides a test chamber and...
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7151603 |
Overhead transparency clarity simulator
A method and apparatus for evaluating the scattering properties of a transparency image comprises projecting radiation through the transparency image to form a transmitted beam of radiation;...
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7119899 |
Particle sensor system
A device is illustrated for detecting particles in a fluid that can detect smaller particles without the need for added power or space and can be implemented inexpensively. The device utilizes two...
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7113266 |
Flow cytometer for differentiating small particles in suspension
A flow cytometer includes an optical flow cell through which particles to be characterized on the basis of at least their respective side-scatter characteristics are caused to flow seriatim. A...
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7075657 |
Surface plasmon resonance measuring apparatus
A measuring apparatus comprising a measuring chip, an optical incidence system, a photodiode array, a differentiation part, and a computation part. The differentiation part differentiates an...
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6972840 |
Method of reducing process plasma damage using optical spectroscopy
Optical emission spectra from a test wafer during a plasma process are measured using a spectrometer. The plasma charging voltage retained by (detected by) the test wafer is measured after the...
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6937332 |
Oil quality sensor
A fluid quality sensor system comprising a light source, a first light sensitive element disposed at a distance from the light source, forming a gap having dimensions suitable for permitting a...
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6922241 |
Fiber optic apparatus for detecting light scatter to differentiate blood cells and the like
Apparatus for detecting light scattered by a small particle (e.g., a blood cell) irradiated by a light beam comprises one or more photodetectors and a plurality of optical fibers that serve to...
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6912412 |
System and methods of fluorescence, reflectance and light scattering spectroscopy for measuring tissue characteristics
The present invention utilizes a plurality of spectroscopic systems and methods to measure characteristics of tissue useful in the diagnosis of disease. In a preferred embodiment, a combination of...
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6900890 |
Fiber Raman sensor for remote chemical detection
Methods and apparatus are provided for detecting a target substance in an atmospheric target area. The target area is illuminated with a laser beam to produce back-scatter light from substances...
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6894779 |
Apparatus for detecting back-scatter in a laser-based blood analysis system
A back-scatter detector for detecting light scattered backwardly (i.e., reflected) by an irradiated particle such as a blood cell comprises a plurality of optical fibers. A fiber optic holder...
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6871816 |
Proactive optical trajectory following system
A system for automatically correcting flight path of an aircraft onto a predetermined trajectory is provided. A sensor is configured to sense speed and direction of air relative to the aircraft at...
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6859276 |
Extracted polarization intensity differential scattering for particle characterization
A particle sizing method and apparatus of the PIDS type uses randomly polarized radiation to irradiate a particle sample. Portions of the resulting side scattering pattern are decomposed to...
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6842242 |
Electively maximizing and minimizing the scattering and absorption of electromagnetic waves
A method for controlling both the scattering and absorption of electromagnetic waves. The method is based on prescribing the sizes of the particles that are suspended in a specified medium and a...
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6831735 |
Analytical method and device using disc cytometry
The analytical method having both flow cytometery and cytodiagnosis functions comprises the steps of: preparing a sample containing particulate substances such as cells and viruses; injecting the...
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6809821 |
Optical-reflectance-based mass-flow sensor
The present invention relates to a mass-flow sensor that measures the mass flow of conveyed reflective materials, such as cotton, in a stream of air or non-opaque fluid. In particular, the...
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6801648 |
Optical imaging system with symmetric optical probe
The present invention generally relates to optical probes of optical imaging systems and methods thereof for providing two-or three-dimensional images of spatial or temporal distribution of...
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6778272 |
Method of processing a semiconductor device
A method of processing a semiconductor device is provided with several steps, including the step of generating plasma in a processing chamber to form or process a thin firm on a semiconductor...
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6778271 |
Measurement of particle size distribution
A particle size distribution analysis apparatus comprising a sample measurement zone adapted to define a sample of particles, a light emitting means adapted to provide a source of light incident...
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6771370 |
Characterizing powders using frequency-domain photon migration
Characterizing a powder bed includes generating measurements by repeating the following. A location of the powder bed is illuminated with light having a time varying intensity with a resolution of...
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6763318 |
Distance sensor with a compensation device for an angle misalignment on a vehicle
A distance sensor having a sensor for a motor vehicle in which an arrangement is provided by which gnment angles and trajectory curvatures can be compensated for during travel not only on a...
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6717655 |
Micropulse lidar system
A micropulse lidar system is described that comprises, a laser light source for emitting a pulsed laser beam, beam shaping means for shaping the intensity distribution of said beam such that said...
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6697652 |
Fluorescence, reflectance and light scattering spectroscopy for measuring tissue
Preferred embodiments of the present invention utilize a plurality of spectroscopic techniques to measure characteristics of tissue useful in the diagnosis of disease. Fluorescence, reflectance and...
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