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| Number | Title | Issue Date |
| 7940378 | Hand-held laser distance measuring device with a pulse reflection mixing method A hand-held laser distance measuring device (1) with pulse reflection mixing includes a control device (2) for calculating the distance (D) to a measurement object (3) over at least one determinable periodic, with a pulse repetition frequency (f... | 05/10/2011 |
| 7924411 | 3-D imaging system A 3-D imaging system is described. The 3-D imaging system comprises an illumination unit for emitting light onto a target scene, an imaging sensor for imaging the target scene by detecting scattered/reflected light, an evaluation unit for determining distance inform... | 04/12/2011 |
| 7864303 | Method for electronic measurement According to the invention, the sensitivity of a method for electronic measurement may be improved, carried out by the principle of heterodyne reception with the steps of broadcast of pulsed electromagnetic radiation (ES) with at least one pulse repetition frequency... | 01/04/2011 |
| 7864304 | Beam irradiation device, laser radar system, and detecting device A beam irradiation device includes: a first light source for emitting laser light; an actuator for moving a scanning section for receiving the laser light to scan a target area with the laser light; a second light source movable with the scanning section and adapted... | 01/04/2011 |
| 7773205 | High-resolution three-dimensional imaging radar A three-dimensional imaging radar operating at high frequency e.g., 670 GHz, is disclosed. The active target illumination inherent in radar solves the problem of low signal power and narrow-band detection by using submillimeter heterodyne mixer receivers. A submilli... | 08/10/2010 |
| 7764359 | Systems and method for distance measurement Embodiments of a distance measurement system are provided, in which a light signal generator comprises a first emission unit outputting a light beam to a target according to a first frequency-modulation signal, and a light-mixing unit generating a light mixing signa... | 07/27/2010 |
| 7760337 | Optoelectronic distance measuring device An optoelectronic distance measuring device includes a frequency modulator generating a high-frequency modulation signal, an emitter emitting a high-frequency modulated measuring beam to an object to be measured, an avalanche photodiode receiving a reflected measuri... | 07/20/2010 |
| 7738083 | Distant measurement method and distant measurement system A distant measurement method and a distant measurement system are provided. The distant measurement method includes the following steps: emitting a first light beam and a second light beam from an emitting terminal, wherein the first light beam travels toward a targ... | 06/15/2010 |
| 7714990 | Hand-held laser distance measuring device with a pulse reflection mixing method A hand-held pulse laser distance measuring device and a pulse reflection mixing method both having an algorithm which controls a microcontroller and which serves to calculate the distance to a measurement object by at least two different time differences τ11 | 05/11/2010 |
| 7586586 | Fiber optically coupled, multiplexed, and chopped laser rangefinder A CW phase-delay distance measuring device is described. The device fiber-optically couples an amplitude modulated laser and a detector though MEMS fiber optic switches to provide chopping and multiplexing capability, and to allow measurement of transmit and receive... | 09/08/2009 |
| 7576837 | Micro-mirror optical tracking and ranging system A micro-mirror optical tracking and ranging system comprises an optical transceiver having a Micro-Electro-Optical Mechanical System (MEOMS) micro-mirror beam steering system and an electronic control and operating system for processing electronic signals. An optica... | 08/18/2009 |
| 7471377 | Laser distance measuring system with a shutter mechanism A laser distance measuring system includes an object lens, a beam splitter, a transmitter, a receiver, and a shutter mechanism. The beam splitter is disposed at one side of the object lens. The transmitter emits a laser beam that is split by the beam splitter into a... | 12/30/2008 |
| 7411662 | Systems and methods for performing active LADAR and passive high resolution imagery A system and method for performing high-resolution imagery of a target are provided. One embodiment is a method of performing high-resolution imagery of a target comprising: generating a chirped waveform that modulates a light signal transmitted toward a target for ... | 08/12/2008 |
| 7372551 | Systems and methods for long-range, high-resolution laser radar range detection Provided are systems and methods for long-range, high-resolution, laser radar range detection. In one embodiment such a system includes an optical pulse modifier configured generated a stretched optical pulse and an optical amplifier configured to increase an optica... | 05/13/2008 |
| 7345744 | Optical delay line to correct phase errors in coherent ladar A ladar system with phase correction. The novel ladar system includes optics for receiving a first signal that is a reflected version of a transmitted laser signal, an optical delay line for providing a second signal that is a delayed version of the transmitted lase... | 03/18/2008 |
| 7342651 | Time modulated doublet coherent laser radar The time separation of laser pulses comprised of a relatively fixed reference pulse and a time varying doublet pulse in a doublet pulse laser radar is linearly modulated for eliminating velocity ambiguity upon reception and detection. A range-Doppler map can be dire... | 03/11/2008 |
| 7339655 | Electric optical distance wavelength meter It is an object of the present invention to provide an electric optical distance wavelength meter detecting the time when the switching is completed and shortening the time required for distance measurement by immediately starting the distance measurement when measu... | 03/04/2008 |
| 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 |
| 7315355 | Method and device for optical distance measurement A method and a device for optically measuring a distance by emitting an amplitude modulated and bundled optical signal and by receiving the signal reflected from a target object. The modulation frequency is continuously regulated by means of a regulating loop in suc... | 01/01/2008 |
| 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 object, the laser energy reflected from the object is collected by a detect... | 12/25/2007 |
| 7307701 | Method and apparatus for detecting a moving projectile An apparatus includes a transmitter portion which transmits a defined beam of eyesafe laser energy, a receiver portion which receives reflected energy from the beam, and a further portion which analyzes information in the received energy so as to detect the presence... | 12/11/2007 |
| 7307700 | Ultra-linear signal processing for radar and laser radar Systems, methods, and computer program products are provided for accurately measuring frequency-and/or-phase-related parameters of a sinusoidal signal that varies non-linearly in frequency or phase. A sinusoidal signal is sampled over a finite period of time at a pl... | 12/11/2007 |
| 7295290 | Coherent laser radar To obtain a coherent laser radar device that realizes high reliability and the high output of a transmitted light, the device includes a first optical coupler that branches a laser beam from a laser source into two lights, a local light and a transmitted light, an o... | 11/13/2007 |
| 7286209 | Generation of wideband high power coherent optical radar signals An arrangement for generating a high power optical radar beam. The arrangement includes first and second laser sources each having a first laser for generating an optical beam of a relatively low frequency F1 and a second laser for generating an optical beam ... | 10/23/2007 |
| 7283214 | Self-mixing laser range sensor A laser range finder includes a laser and a photosensitive element. The laser projects a beam onto a target surface. A backscattered portion of the laser beam returns to the laser from the target surface and enters the laser emitting cavity. Variations in laser outp... | 10/16/2007 |
| 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 |
| 7224444 | Method and device for optically measuring distance The invention relates to a method for optical distance measurement, in which a transmitter of a transmission branch (14), which branch is integrated with a measuring device (10), transmits a modulated measurement beam (16, 36) in the direction o... | 05/29/2007 |
| 7177014 | Light wave distance measuring apparatus A reference electrical signal oscillated by the main oscillator (11) has two kinds of frequencies (f1, f2) which are different from each other and any one of which is alternatively selected, a sampling signal is synchronized with the ref... | 02/13/2007 |
| 7154590 | Doppler tracking optical monopulse A method and apparatus for finding a relative direction to, a radial speed of, and a distance to a target is described. A laser source illuminates the target and the Doppler shifted return beam is incident upon a window system at an angle and is transmitted therethr... | 12/26/2006 |
| 7081978 | Beam combining device for multi-spectral laser diodes A system and method for combining a predetermined number of laser beams. The system (30) includes a collimating lens (34) for receiving and collimating the laser beams and a holographic device (36) positioned to receive beams from the collimatin... | 07/25/2006 |
| 7075626 | Laser distance measuring device The invention is based on a laser range finder that has a transmitter unit (10) with at least one laser, a receiver unit (12), and a single sideband modulation unit (14) that can use a first single sideband modulation frequency (ZF1) gene... | 07/11/2006 |
| 7027785 | Transmitter RF power control An electronic system for accurately controlling the RF output power from a power amplifier (21) is implemented using a multiplier (28) which multiplies the output power by itself to provide a DC component which is fed to a variable gain amplifier (2... | 04/11/2006 |
| 7023531 | Laser distance measuring device with phase delay measurement A laser distance measuring device (1) includes a laser diode (4) for emitting a high frequency intensity modulated measurement light beam (3) and connected with a signal generating unit (SGU) that generates a high frequency measurement signal ( | 04/04/2006 |
| 7012237 | Modulated laser light detector A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where t... | 03/14/2006 |
| 6950639 | Local oscillator for generating an HF signal for direct mixing by using avalanche photodiodes A local oscillator for use in an optoelectronic distance measurement system for generating a narrow-band HF signal for direct signal mixing with a reception signal generated by an avalanche photodiode (2) from a light signal impinging on the latter, with the ... | 09/27/2005 |
| 6940599 | 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... | 09/06/2005 |
| 6917415 | Method of and apparatus for electro-optical distance measurement A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode (1) is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train (10) is detect... | 07/12/2005 |
| 6909730 | Phase-locked loop control of passively Q-switched lasers Methods and apparatus for controlling a passively Q-switched laser (PQSL) that use a Q-switched laser as a voltage controlled oscillator (VCO) in a phase-locked loop control circuit are disclosed. The PQSL may be optically coupled to a detector. The detector may be ... | 06/21/2005 |
| 6864966 | Method and device for measuring distances The invention relates to a method for measuring distances, based on the phase measurement of an optical measuring beam that is reflected or scattered by an object, on which the beam is sighted. According to said method, the measurement object is exposed to an optica... | 03/08/2005 |
| 6803998 | Ultra low cost position and status monitoring using fiber optic delay lines Embodiments of the invention provide an improved method and apparatus for sensing position and/or status of an object. For one embodiment, a method generally includes illuminating the object with an optical pulse source and supplying a first optical pulse to a photo... | 10/12/2004 |
