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8184271 |
Differentiation 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...
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8184272 |
System and method for transitioning from a missile warning system to a fine tracking system in a directional infrared countermeasures system
A method for transitioning a target from a missile warning system to a fine tracking system in a directional countermeasures system includes capturing at least one image within a field of view of...
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8169599 |
Device and method for measuring parts
A device and method for measuring moving material includes a processor and operating software associated therewith; a light source for emitting at least two polarized light beams in a manner...
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8139206 |
Method 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...
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8134693 |
Traffic 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...
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8120756 |
Laser 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...
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8072584 |
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...
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8068216 |
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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8059263 |
Apparatus for the recognition of the presence of an object in space
An apparatus for the recognition an object in space in accordance with the pulsed time-of-flight principle. The apparatus has a pulsed laser and a photoreceiver arrangement which receives the light...
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8035888 |
Frequency shifter in an optical path containing a pulsed laser source
The present invention relates to a frequency shifter in an optical path containing a pulsed laser source, and it is characterized in that it comprises at least one frequency shifter (12, 13)...
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8031339 |
Particle measurement systems and methods
A system according to one embodiment includes a light source for generating light fringes; a sampling mechanism for directing a particle through the light fringes; and at least one light detector...
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8031344 |
Z-stage configuration and application thereof
A stage configuration is provided, wherein a ceramic plate is used as the z-stage body to decrease the use of the metal plates in the conventional configuration, so that the compact structure of...
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8028343 |
Scanning probe microscope with independent force control and displacement measurements
A nanoindenter that includes an interferometer, a rod, a force actuator and a controller is disclosed. The interferometer generates a light beam that is reflected from a moveable reflector, the...
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8000847 |
Control system for automatic flight in windshear conditions
A flight control system is configured for controlling the flight of an aircraft through windshear conditions. The system has means for measuring values of selected flight performance states of the...
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7986398 |
Gas velocity sensor
A method and apparatus for determining gas velocity, which includes generating transmitted radiation having an expected transmission frequency, detecting backscattered radiation, and determining...
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7982863 |
Biaxial laser anemometry probe
The subject of the present invention is a laser anemometry probe for optical homodyne detection of frequency offset by Doppler effect, comprising two devices (DERF1, DERF2) for...
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7978320 |
Light angle detection device, method for fabrication thereof and electronic device employing same
A light angle detection device according to an embodiment of the present invention includes a first light receiving lens, a first light sensing element, a second light receiving lens, and a second...
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7978316 |
Multi-phase interferometer
An optical perturbation sensing system includes a probing beam incident on a medium with perturbations and a sensing beam redirected from the medium and incident on a surface area of a...
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7961302 |
Physical quantity sensor and physical quantity measuring method
A physical quantity sensor has a semiconductor laser, a laser driver for providing, to the semiconductor laser, a driving electric current that is a waveform wherein the maximum portions and...
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7948613 |
Optical 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...
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7944549 |
Optical 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...
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7936450 |
Opto-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...
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7933003 |
Method and apparatus for studying surface vibrations by moving speckle interferometer
A method of studying a surface using an interferometer, in which there is relative motion between the surface and the interferometer, the motion having a total velocity Vtot which includes a...
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7929119 |
Image 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...
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7920250 |
System 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...
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7911614 |
Non-contact measurement probe
The non-contact measurement probe is capable of dimensional measurement of a workpiece while it is being machined, and reporting dynamic error for real-time compensation by the machining tool....
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7911591 |
Optical 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...
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7911593 |
Range finder/velocimeter and range-finding/velocimetry method
A laser driver (4) causes a semiconductor laser (1) to operate such that a first oscillation period of monotonically increasing the oscillation wavelength and a second oscillation period of...
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7894046 |
Two-dimensional estimation technique for doppler optical coherence tomography (OCT)
Optical Coherence Tomography (OCT) is a high-resolution, non-invasive technique to image subsurface tissue and tissue functions. A broadband light source illuminates an object and the reflected...
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7894045 |
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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7889353 |
Method of measuring relative movement of an object and an optical input device over a range of speeds
A method and optical module for measuring relative movement of an input device and object (15) along at least one measuring axis. A laser device (3) having a laser cavity is provided for generating...
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7869008 |
Device 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...
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7864305 |
Self-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...
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7847924 |
Performance of an atom interferometric device through complementary filtering
A technique is disclosed which offers an improvement in the performance of an atom interferometric (AI) sensor, such as one that is used in an accelerometer or a gyroscope. The improvement is based...
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7827861 |
Position correction in sodar and meteorological lidar systems
A system and method for correcting wind speed and direction data collected by a sodar or lidar apparatus for the orientation and/or position of the apparatus. There are sensors mounted to the sodar...
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7816648 |
Electron interferometer or electron microscope
In an electron beam interference system using an electron biprism, which is capable of independently controlling each of the interference fringe spacing s and the interference width W, both of...
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7817254 |
Obtaining 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,...
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7808618 |
Methods and apparatus for providing a semiconductor optical flexured mass accelerometer
Methods and apparatus are provided for integrating various optical components onto a planar substrate using a single semiconductor material system to produce an accelerometer. A light beam is...
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7787107 |
Motion measurement and synchronization using a scanning interferometer with gratings
Indicating relative speed is disclosed. A first grating coupled to a first moving object is illuminated using a coherent light source to generate a first diffracted beam and a diffracted order...
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7777866 |
Fixed difference, dual beam laser Doppler velocimetry
A method and apparatus for laser Doppler velocity measurements with a fixed difference, dual beam receiver and using a non-laser, stable frequency reference.
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7760339 |
Optical air data systems and methods
Systems and methods for sensing air outside a moving aircraft are presented. In one embodiment, a system includes a laser for generating laser energy. The system also includes one or more...
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7755745 |
Coherent doppler lidar
A coherent Doppler lidar which can oscillate high energy pulses and output laser beams in a longer wavelength range of 1.5 μm to the atmosphere is provided. The coherent Doppler lidar has a pulse ...
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7746450 |
Full-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...
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7738084 |
Fiber 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...
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7719663 |
Heterodyne laser doppler probe and measurement system using the same
A heterodyne laser having a first optical path for guiding excitation light and a second optical path for guiding measurement light. The heterodyne laser includes an optical probe body for...
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7705971 |
System 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...
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7705972 |
Doppler sensor for the derivation of torsional slip, friction and related parameters
An optical method and apparatus are described for the measurement of properties of a travel vehicle or a travel surface upon which the travel vehicle travels, which includes providing an incident...
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7701560 |
Displacement 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...
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7692773 |
Light emitting diode based measurement systems
Various light emitting diode (LED) based measurement systems and methods are provided. One system includes one or more arrays of LEDs arranged along a flow path of a sample. The array(s) are...
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7688348 |
Lidar with streak-tube imaging, including hazard detection in marine applications; related optics
The system and method relate to detection of objects that are submerged, or partially submerged (e.g. floating), relative to a water surface. One aspect of the invention emits LIDAR fan-beam pulses...
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