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| Number | Title | Issue Date |
| 8174683 | Vehicle positioning measurement system and method A vehicle position measurement system (100) and method to determine the (relative) position of a vehicle (110) and an object (120) are proposed. The system comprises at least two light sources (131, 132) capable of emitting light and posi... | 05/08/2012 |
| 8081301 | LADAR transmitting and receiving system and method A compact LADAR transmitting and receiving apparatus includes a pulse laser generating pulses of light; a transmitter collimating and directing the pulses of light toward a target; a receiver collecting reflected pulses of light, the reflected pulses of light having... | 12/20/2011 |
| 7986397 | FMCW 3-D LADAR imaging systems and methods with reduced Doppler sensitivity A method for frequency modulated continuous wave LADAR imaging is provided. The method comprises the steps of generating a chirped laser signal and a constant-frequency laser signal, forming a target laser signal from the chirped laser signal and the constant-freque... | 07/26/2011 |
| 7920249 | Device and method for measuring relative movement A device for measuring movement of an object (15) and the device relative to each other. The device comprises a laser (3) for generating a measuring beam (13), which is converged by a lens (10) in an action plane. Radiation reflected by t... | 04/05/2011 |
| 7869006 | Laser measuring device A laser measuring device maintains high responsivity irrespective of changes in surrounding environment, provides more correct measurement and long distance measurement due to reduced noise, and ensures the safety and reliability of a product. A first light emitter ... | 01/11/2011 |
| 7742152 | Coherent detection scheme for FM chirped laser radar An optical homodyne detection scheme for FM chirped lidar is described. The system performs de-chirping within a photodetector, and it does not require high-speed photo-detection or RF mixing. Embodiments are also described for dealing with phase noise. ... | 06/22/2010 |
| 7671971 | Electro-optical method for measuring distance and detecting a non-ideal chirp profile The invention relates to an electro-optical distance measuring method wherein frequency-modulated optical radiation is emitted onto at least one target to be measured. Once the radiation back-scattered to the target is received, the chirp of radiation is modeled by ... | 03/02/2010 |
| 7623222 | Single-channel heterodyne distance-measuring method According to the invention, high precision distance measurement may be carried out by the broadcast of pulsed electromagnetic radiation (ES) with at least two pulse repetition frequencies, whereby the pulse repetition frequencies are selected such that the correspon... | 11/24/2009 |
| 7420656 | Scannerless loss modulated flash color range imaging Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three... | 09/02/2008 |
| 7414705 | Method and system for range measurement A method (200) and system (220) for range detection is provided. The system can include a sensing unit (110) for detecting a location and movement of a first object (401), and a processor (107) for providing a measure of the moveme... | 08/19/2008 |
| 7391505 | Range sensing system The invention relates to a solid-state range sensing system. As with previous solid-state range sensing systems, an energy source is activated and deactivated in a cyclic pattern with a selected source frequency. A receiver is adapted to sense the reflection of emit... | 06/24/2008 |
| 7372394 | Variable loop gain and resolution pulse system and method with point target editing capability A weather radar system is coupled to antenna. The weather radar system includes a processor for generating pulses and for processing return pulses received by the antenna. The processor generates high resolution data from the return pulses. The processor uses the hi... | 05/13/2008 |
| 7362261 | Linear frequency-modulated pulse radar A linear frequency-modulated pulse radar system is provided in which the echo signal is mixed with a de-ramp signal, in order to reduce the bandwidth. The transmission signal of the pulse radar and the de-ramp signal are generated with the same reference oscillator,... | 04/22/2008 |
| 7359039 | Device for precise distance measurement An electronic method for distance measurement based on pulsed laser time-of-flight is provided. The method comprises generating a wave of outgoing radiant energy pulses having a substantially stable period for providing a wave of pulses reflected from a target objec... | 04/15/2008 |
| 7352447 | Active optical measurement device with weak signal amplification The invention relates to an optical measurement device designed notably to evaluate the velocity of an aircraft by detection of a Doppler shift. The device for measurement by optical probe comprises at least two light beams of different wavelengths λ1 , λ2,... | 04/01/2008 |
| 7336346 | Distance measuring device and method thereof A distance measuring device is provided that reduces the time required for a distance measurement without degrading accuracy of the measured value. The distance measuring device includes a reference signal oscillator (26) that generates a reference signal (K)... | 02/26/2008 |
| 7330242 | System for recording an object space A system for recording an object space has a opto-electronic distance sensor which uses a signal propagation time method, and a transmitter for transmitting optical, signals, as well as a receiver (E) for receiving optical signals, reflected by objects located in th... | 02/12/2008 |
| 7327462 | Method and apparatus for direct detection of signals from a differential delay heterodyne interferometric system A direct detection method and apparatus for a fiber optic acoustic sensor array systems using an in-line Michelson sensor TDM array and an interferometric section having two acousto-optic modulators that produce optical pulses that are frequency shifted with respect... | 02/05/2008 |
| 7327441 | Distance measuring system A distance measuring system, comprising a laser light source for projecting a pulsed laser beam to an object to be measured, a photodetection element for receiving an external light reflected by the object to be measured and an internal light which is a divided part... | 02/05/2008 |
| 7324218 | Method and device for distance measurement The present invention relates to a device (10) for distance measurement, with at least one transmitting branch (14) with a transmission source (22, 24) for a measurement signal for emitting a modulated measuring beam (16, 26, 36) in the d... | 01/29/2008 |
| 7312856 | Programmable pulse capture device with automatic gain control The invention an optical system and a method for automatically controlling the gain of a receiver in an optical system. The optical system includes an optical receiver, a pulse capture unit, and an automatic gain control. The pulse capture unit includes a capture un... | 12/25/2007 |
| 7282374 | Method and apparatus for comparing device and non-device structures The present invention provides a method and apparatus for comparing device and non-device structures. The method includes determining at least one characteristic parameter associated with at least one non-device structure on at least one workpiece and determining at... | 10/16/2007 |
| 7280267 | Device for remotely stimulating and measuring electronic signals through a fiber optic cable An optoelectronic system includes an optical signal modulator, an optical input guide and an optical output guide connected to the optical signal modulator. The system further includes a reflective optical element in the optical signal modulator, the element dispose... | 10/09/2007 |
| 7280186 | High resolution chirped/AM optical FM laser radar Optical techniques are disclosed for improving the range resolution of a radar system. An optical source produces chirped optical pulses whose frequency changes linearly with time, wherein the pulse duration is close to the repetition period (quasi cw radiation). Th... | 10/09/2007 |
| 7277162 | Dynamic performance monitoring of long slender structures using optical fiber strain sensors A method is described using optical fiber technology to measure the vibration characteristics of long slender structures subjected to dynamic disturbances imposed by water or wind generated loads. The method is based on making bending strain measurements at selected... | 10/02/2007 |
| 7245836 | Optical pulse timing detection apparatus, optical pulse timing detection method, optical pulse timing adjustment apparatus, and optical pulse timing adjustment method Incident signal beam pulses are transmitted by an on-state region, and an optical path for the signal beam pulses is spatially switched in an optical switch. Signal beam pulses transmitted by the on-state region of the optical switch are detected at a pixel correspo... | 07/17/2007 |
| 7233433 | Self-reference locking of optical coherence by single-detector electronic-frequency tagging A coherent laser beam combining system wherein the output of a single master oscillator is split into a plurality of signals, the signals are electronically modulated at unique frequencies. One signal is designated a reference signal while the remaining signals are ... | 06/19/2007 |
| 7233402 | Measurement device for optical measurement of a property of a measurement object This invention relates to a measurement device, for optically measuring a property of a measurement object, the measurement device comprising a main resonator having a first and a second reflecting end defining a cavity having an effective optical cavity length, an ... | 06/19/2007 |
| 7230684 | Method and apparatus for range finding with a single aperture An apparatus has a rangefinder portion that includes: a radiation generator which emits radiation having a selected wavelength; a radiation detector which detects radiation having the selected wavelength; and an optical portion which includes a non-reciprocal optica... | 06/12/2007 |
| 7230227 | Lenslet/detector array assembly for high data rate optical communications An assembly is provided that may be used in high data rate optical communications, such as free-space communication systems. The assembly may include a main optical receiver element and a lenslet array or other optical element disposed near the focal plane that coll... | 06/12/2007 |
| 7230711 | Envelope functions for modulation spectroscopy A spectrometer and spectrometry method comprising modulating a light source with a carrier waveform multiplied by an envelope function, directing light from the light source through a sample region and to a photodetector, and demodulating current from the photodetec... | 06/12/2007 |
| 7221499 | Frequency scanned array control system An optical fiber amplifier array and related method, in which high beam quality is achieved by varying the frequency of an input signal applied to all of the fiber amplifiers, to locate a frequency at which the amplifiers produce nearly coherent optical outputs. In ... | 05/22/2007 |
| 7212278 | Method and device for recording a three-dimensional distance-measuring image The invention relates to methods and devices for recording three-dimensional distance-measuring images of an object surface by measuring light propagation time using a short-term integrated photodetector. For starting a light-induced pulse on the transmission side, ... | 05/01/2007 |
| 7201221 | Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ... | 04/10/2007 |
| 7200344 | Receiver and method for a multichannel optical communication system A method and system for transmitting information in a wavelength division multiplex (WDM) or other suitable multichannel optical communication system includes receiving a multichannel signal having a symbol rate and comprising a plurality of non-intensity modulated ... | 04/03/2007 |
| 7200338 | Method and system for communicating a clock signal over an optical link A method and system for communicating a clock signal over an optical link includes receiving a multimodulated optical information signal including non-intensity modulation for a data signal and intensity modulation for a clock signal. The clock signal is recovered b... | 04/03/2007 |
| 7193720 | Optical vibration imager A remote sensor capable of imaging vibrations at many simultaneous points using high-speed imaging cameras is disclosed. The preferred embodiment operates in heterodyne detection mode using a single camera to capture signals to recover multi-pixel vibrations. One al... | 03/20/2007 |
| 7187492 | Self-referenced locking of optical coherence by single-detector electronic-frequency tagging A coherent laser beam combining system wherein the output of a single master oscillator is split into a plurality of signals, the signals are electronically modulated at unique frequencies. One signal is designated a reference signal while the remaining signals are ... | 03/06/2007 |
| 7180580 | Passive distance measurement using spectral phase gradients General method for extracting source distance information from any kind of received radiation, including electromagnetic and acoustic, without involving round-trip time or phase in any form, and thus more truly passive than existing passive radars. The method exploi... | 02/20/2007 |
| 7177059 | Device and method for manipulation and routing of a metrology beam A lithographic projection apparatus is equipped with a device for manipulation and routing of at least one portion of a metrology beam of radiation. The device includes a first and a second optical wedge, wherein the second optical wedge and the first optical wedge ... | 02/13/2007 |
