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Class 356/28 - With light detector (e.g., photocell)


Subclass of Class 356 - Optics: measuring and testing
Definition: Subject matter wherein the measuring system includes means
No. of patents: 652
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8184271Differentiation of flow cytometry pulses and applications
A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-de...
05/22/2012
8149392Method and apparatus for reducing handoff inaccuracies in a countermeasures system
A method for reducing handoff inaccuracies in a DIRCM countermeasures system comprising the step of adding a second on-axis camera to the DIRCM countermeasures system. ...
04/03/2012
8139206Method and arrangement to determine a wind-speed
A method and an arrangement are provided to determine the speed of the wind, which acts on a wind-blade of a wind-turbine. An optical-signal with a known frequency is sent from an optical-transmit-unit to a joint measurement volume. The optical-signal is scattered a...
03/20/2012
8134693Traffic violation detection, recording and evidence processing system
A traffic violation or event detection, recording and processing system and method is disclosed which includes at least one camera (20 and 30) for monitoring a region under surveillance (31 and 33); means for supplying independently sourc...
03/13/2012
8125622Lidar measurement device with target tracking and method for use of same
A Lidar measurement device for vehicular traffic surveillance and method for use of same are disclosed. In one embodiment, video circuitry acquires video of a field of view having a target therein. A steerable laser progressively scans the field of view to identify ...
02/28/2012
8120756Laser doppler velocity system for variable beam focusing
Disclosed is a laser doppler velocity system that can easily change a focal length of laser beam, in order to measure the velocity of fluid. As the fluid lens is used in order to focus the laser beam, the lens aperture is rapidly and accurately changed at a low powe...
02/21/2012
8120757Remote lens unit assembly for laser doppler velocimeter
An assembly structure and method for housing a remote lens unit assembly of a laser Doppler velocimeter. The housing includes one or more transceiver telescopes and an optical window. The transceiver telescopes are aligned such that optical beams from the mounted op...
02/21/2012
8120755Method of correcting a volume imaging equation for more accurate determination of a velocity field of particles in a volume
The subject matter of the invention is a method of correcting a volume imaging equation for more accurate determination of a velocity field of particles in a volume, said volume being captured from different directions by at least two cameras, a coarse calibration o...
02/21/2012
8098367Laser slope adjustment
Tools and techniques for estimating elevations, including without limitation tools and techniques that employ mobile stations with laser detectors for receiving a beam emitted from a laser source and estimating an elevation of the mobile station based on the receive...
01/17/2012
8064047Method and apparatus for contactless determination of a lateral offset relative to a straight-ahead direction
Method and apparatus for contactless determination of lateral offset relative to a straight-ahead direction when an object moves relative to an object with a stochastic surface structure, in which the surface structure is imaged on at least two similar photosensors ...
11/22/2011
8045140Method for multivariate analysis of confocal temporal image sequences for velocity estimation
A method of determining individual velocity associated with one or more molecular species moving through a fluid medium involves obtaining multiple temporal images of the one or more species moving through the medium, analyzing the temporal images using multivariate...
10/25/2011
8040493Thermal flow meter
A thermal flow meter for use in dialysis is described, that uses a thermal wave to generate a signal in the fluid for which the flow rate is to be measured. The phase angle of the thermal wave signal changes when traversing downstream. The phase difference between t...
10/18/2011
7999926Method and device for determining anemometric parameters of an aircraft
A method and device for determining anemometric parameters of an aircraft. The device (1) comprises four laser anemometers (A1, A2, A3, A4) that are mounted in pairs (CA, CB) symmetrically on the aircraft and means (4, 5) fo...
08/16/2011
7982862Line of sight wind speed detection system
The invention is a line of sight wind detection system that has a laser with an output that is directed at a target. The system also has a receiver with a Hartmann aperture array receiving a reflected beam impinging on the Hartmann aperture array. A multiple pixel s...
07/19/2011
7948613Optical device for measuring moving speed of an object relative to a surface
The invention relates to sensors of the speed of movement of a vehicle over the ground. The sensor comprises illumination means for illuminating the surface and at least one optical sensor able to detect the radiation returned by the surface. The illumination means ...
05/24/2011
7944549Optical screen, systems and methods for producing and operating same
There is provided a system for forming an optical screen, including a continuous wave or pulsed laser transmitter for transmitting a beam of radiation at a predetermined wavelength and forming a planar or curved surface to be traversed by a moving object, at least o...
05/17/2011
7936450Opto-electrical sensor arrangement
The invention relates to an opto-electronic sensor arrangement (10) with an optical transmitter (20) and an optical receiver (30), such that the optical transmitter (20) and the optical receiver (30) are so positioned that they eit...
05/03/2011
7933002Method and lidar system for measuring air turbulences on board aircraft and for airports and wind farms
The invention relates to a method for measuring air turbulences with a lidar system, particularly on board aircraft during which a pulsed expanded laser beam (12) of a predetermined wavelength is emitted up to a spatial area and light backscattered from this ...
04/26/2011
7929119Image pickup device for detecting moving speed of shot object and method thereof
An image pickup device for detecting a moving speed of a shot object and a method thereof are described. First, a coordinate of the image pickup device and a coordinate of the shot object are obtained at a first time point. Next, a coordinate of the image pickup dev...
04/19/2011
7920250System for the detection by a motor vehicle of a phenomenon that interferes with visibility
A process for the detection from a vehicle of a visibility interference phenomenon, comprising the following steps: the emission of a beam of light to illuminate the rear of the vehicle, the beam of light being emitted into a field of vision of a camera mounted in t...
04/05/2011
7920251Integrated still image, motion video and speed measurement system
Devices capable of capturing still and motion imagery are integrated with an accurate distance and speed measuring apparatus. By measuring the changing distance of the target over that time, a target's speed can be determined. At substantially the same time as the t...
04/05/2011
7911591Optical transit time velocimeter
An L2F velocimeter comprises a probe for insertion into a fluid, the probe having an open area therein to allow the fluid to pass through. The probe comprises an illumination system to direct a pair of light beams, separated by a distance, through the open area, and...
03/22/2011
7911590Method and system for measuring the speed of blood flow
The invention relates to a method for measuring the speed of a particle such as a red blood cell moving inside a flow such as a flow of the blood, using a light scanning microscope. The inventive method comprises the following steps: acquisition of an image by x and...
03/22/2011
7911592Method and system for identifying moving object, and method and system for inspecting moving object by radiation imaging
Disclosed is a method for identifying a moving object, comprising: a driving-in step of moving a moving object into a passage, a velocity measuring step of measuring a moving velocity of the moving object, a light beam emitting step of emitting light beams from one ...
03/22/2011
7889328System and methods for detecting turbulence based upon observations of light scintillation
Systems and methods are provided for detecting turbulent air located between a light source and an observer based upon the scintillation of light produced by the light source. An optical sensor associated with the observer is configured to receive the light and to p...
02/15/2011
7869008Device of detecting light reflecting speed and direction, and method thereof
A device of detecting light reflecting speed and directions includes a light source, a light-guided pulley, a reflector, photo detectors, barriers, a processor and a display unit. The light source generates incident light, the light-guided pulley is located at one s...
01/11/2011
7864305Self-contained underwater velocimetry apparatus
A velocimetry apparatus and method for the collection of target-specific images of fluid motions are disclosed. The apparatus includes a camera and a light source. The camera collects and provides images of the fluid showing instantaneous positions of particles in t...
01/04/2011
7847923Differentiation of flow cytometry pulses and applications
A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-de...
12/07/2010
7834986Velocimeter
A velocimeter is disclosed that includes a plurality of photodetectors detecting scattered light in different directions, the light being emitted from a laser source and reflected on a moving object. The velocimeter includes an analog-to-digital conversion unit conv...
11/16/2010
7817254Obtaining information from time variation of sensing results
Sensing results from moving objects, e.g. from photosensing emanating light or from impedance-based sensing, can indicate sensed time-varying waveforms with information about objects. For example, a sensed time-varying waveform can be compared with another waveform,...
10/19/2010
7760338Method for the detection of an object and optoelectronic apparatus
The present invention relates to a method for the detection of an object by means of an optoelectronic apparatus, wherein light rays generated by a light source are incident onto an object as a light bead and the light rays scattered back and/or reflected from the o...
07/20/2010
7746450Full-field light detection and ranging imaging system
Apparatuses and methods determine positional information from a reflected optical signal for an object on a per pixel basis. A spread spectrum imaging system includes a transmitting module transmitting a transmitted optical signal that illuminates a target space and...
06/29/2010
7742153Miniature opto-mechanical anemometer
An opto-mechanical anemometer is particularly adapted to measure fluctuations in the flow of a turbulent fluid such as can be applied in the measurement of wind turbulence for meteorological purposes, the turbulent flow of fluid through a pipe or conduit, or the flo...
06/22/2010
7738084Fiber optic liquid mass flow sensor and method
A method and apparatus are provided for sensing the mass flow rate of a fluid flowing through a pipe. A light beam containing plural individual wavelengths is projected from one side of the pipe across the width of the pipe so as to pass through the fluid under test...
06/15/2010
7710549Apparatus for detecting speed of movable body and drive stage using the same
A movable-body-speed-detecting apparatus includes a movable body capable of moving linearly and/or circularly, a plate fixed to the movable body, the plate having a predetermined length in a direction in which the movable body moves, and light emission/reception mea...
05/04/2010
7705971System and method for determining crosswinds
A system and method for measuring crosswinds includes using a laser to send a signal on a signal path, and receiving response signals backscattered off of aerosols or other materials in the atmosphere along the signal path. Wavefronts of the received responses are p...
04/27/2010
7701560Displacement Speed Measurement Method
The measurement method of the displacement speed of a moving element with respect to a fixed element is performed by means of an optic measuring device comprising a first reference sensor and a plurality of distinct second measurement sensors substantially aligned a...
04/20/2010
7684020Sensor system and method for detecting and identifying rapidly moving objects
A relatively low-cost sensor can accurately detect, identify and track rapidly moving objects such as missiles, rocket propelled grenades (RPGs), mortars, explosive-driven fragments, bullets, shells, sports projectiles (baseballs, golf balls, tennis balls, arrows, e...
03/23/2010
7671972Optical sensing methods and apparatus
A method of sensing movement or proximity of objects by optical reflection is provided. The method includes the steps of transmitting a train of optical pulses towards a destination, sensing optical pulses reflected from the destination, and sensing and evaluating m...
03/02/2010
7652754Feature detecting vision sensor
A visual sensor for generating an array of binarized feature signals based on a visual field is provided. The visual sensor comprises an array of photoreceptor circuits capable of generating photoreceptor signals based on the visual field, an array of feature detect...
01/26/2010
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