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8108147 Apparatus and method for automatic omni-directional visual motion-based collision avoidance  
A method of identifying and imaging a high risk collision object relative to a host vehicle includes arranging a plurality of N sensors for imaging a three-hundred and sixty degree horizontal field...
7817253 Distance measurement method, medium, and apparatus for measuring distance between the distance measurement apparatus and target object  
A distance measurement method, medium, and apparatus for measuring a distance between the distance measurement apparatus and a target object are provided. The distance measurement method comprises...
7560679 3D camera  
Structures and methods are provided for obtaining depth information regarding a scene being imaged. The scene is illuminated with light having a time varying parameter. Light reflected from the...
7502064 Using light pulses to implement auto-focus in a digital camera  
A camera includes a light transmitter configured to transmit light pulses at a first rate, a light receiver configured to receive return signals corresponding to the light pulses transmitted by the...
7474387 Electro-optical distance measuring method, distance measuring program and distance measuring system  
An electro-optical distance measuring method for measuring a distance to an object to be measured by receiving a reflected light from the object to be measured, comprising a step of projecting a...
7362420 Entangled-photons range finding system and method  
A method of determining a distance to an object is presented. A first photon and a second photon are simultaneously generated. The first photon is reflected off an object. The second photon is...
7193692 Laser range finder and method to measure a distance  
A laser range finder, including a transmitter, a receiver, a timing-counting module, and a processor is provided. The transmitter transmits a laser signal toward a target, and a reflected signal is...
6943868 Apparatus for and method of optical detection and analysis of an object  
An apparatus for detection and analysis of optical systems. Prior art systems exploit the phenomenon of photon scattering in order to range the distance of objects from the ranging apparatus....
6924887 Method and apparatus for generating charge from a light pulse  
A method and apparatus for generating charge from a light pulse. In one example, a light sensor includes an active region for generating an electric charge in response to a light pulse. A drift...
6856927 Method and apparatus for the characterization of optical pulses and modulators  
A method and apparatus for the characterization of optical pulses and modulators includes modulating, using a modulator, a train of optical pulses, measuring a spectrum of the modulated train of...
6836317 Method for optically measuring distance  
The invention relates to a method of measuring the distance between a fixed point and an object, by the steps of: a) transmitting a light pulse (11) from the fixed point at a selected instant of...
6829043 Distance measurement device with short distance optics  
Technology is disclosed for measuring distances. A measurement device emits a beam that reflects on the surface of an object. The measurement device determines the distance to the object, based on...
6717656 Method and apparatus of a laser range detector  
The present invention is a method and an apparatus of a laser range detector, a delay circuit is comprised for generating a plurality of delay signals. With the delay signal, the precision of...
6678039 Method and system to enhance dynamic range conversion useable with CMOS three-dimensional imaging  
High dynamic range brightness information is acquired by inputting detection current to a high (adjustable) gain resettable integrator whose output V(t) is compared to a Vth threshold by a...
6657706 Method and apparatus for resolving relative times-of-arrival of light pulses  
A method and apparatus for resolving relative times-of-arrival of a plurality of light pulses includes a plurality of drift-field detectors. Each drift-field detector includes a light sensor and a...
6650403 Distance measuring device for a vehicle  
In a distance measuring device, reflected pulsed light beams with respect to one transmitted light beam are amplified by plural amplifiers (22a, 22b) of different gains. The retroreflection times...
6650404 Laser rangefinder receiver  
In a laser rangefinder receiver, a return signal from a light-sensitive detector is passed through a high-pass filter, and is then processed in two separate circuit paths, a “signal” path and a “no...
6586748 Non-invasive water current measurement system and method  
A method and system are provided for measuring water current direction and magnitude. A plurality of beams of radiation are transmitted radially outward from a location above a body of water. Each...
6587186 CMOS-compatible three-dimensional image sensing using reduced peak energy  
A three-dimensional time-of-flight (TOF) system includes a low power optical emitter whose idealized output S1=cos(ω·t) is reflected by a target distance z away as S2=A·cos(ω·t+Φ), for detec...
6535275 High resolution 3-D imaging range finder  
A three-dimensional imaging range finder is disclosed using a transmitted pulse reflected from a target. The range finder includes a pixel sensor for receiving light from the target and the...
6522983 Timebase calibration method for an equivalent time sampling digitizing instrument  
A method of calibrating a timebase in a digitizing instrument estimates the frequency of the clock signal from the clock generator that clocks a coarse delay counter in a strobe generator. The...
6522395 Noise reduction techniques suitable for three-dimensional information acquirable with CMOS-compatible image sensor ICS  
A three-dimensional imaging system is fabricated on a single IC. The system includes a two-dimensional array of pixel light sensing detectors and dedicated electronics and associated processing...
6501539 High precision laser range finder with an automatic peak control loop  
A high precision laser range finder comprises an APC loop for eliminating a timing jitter problem due to different reflections on a target. The APC loop comprises a laser receiver, a peak holding...
6445444 Self-calibrating precision timing circuit and method for a laser range finder  
A highly precise range measurement instrument is made possible through the use of a novel and efficient precision timing circuit which makes use of the instruments internal central processing unit...
6323942 CMOS-compatible three-dimensional image sensor IC  
A three-dimensional imaging system includes a two-dimensional array of pixel light sensing detectors and dedicated electronics and associated processing circuitry fabricated on a common IC using...
6288775 Lightwave distance measuring apparatus and method  
A lightwave distance measuring apparatus having a coaxial light-transmitting/receiving type optical system is provided with light-transmitting means for transmitting pulsed light toward an object,...
6281969 Cloud base measurement method  
A high altitude lidar system propagates a beam of laser pulses through clearings in a cloud formation which reflects off the surface of the earth thereby providing first earth surface returns and...
6259515 Evaluation concept for distance measuring processes  
A process for determining the distance (D) between a distance sensor and an object. A transmitter sends wave pulses with a predetermined first frequency fb 1 and the wave pulses reflected by the...
6239866 Temporal measurements of ultrashort far infrared electromagnetic pulses  
Dithered-edge sampling (DES) enables ultra-wideband measurement of terahertz pulses (far infrared electromagnetic pulses) using photoconductive antennas. The terahertz pulse is sampled by first...
6133992 Distance measurement apparatus  
A distance measurement apparatus for measuring distance to the target by measuring a time elapsed from the emission of pulsed light to the target until the receiving thereof. This apparatus...
6108071 Speed and position measurement system  
A speed and/or position determining device for determining the speed or position of a target object includes a head-up display for simultaneously viewing both the target object and an image of...
5902348 Method and system for deriving travel distance of vehicle  
A method and system for deriving a travel distance of an object which travels. As one aspect, a travel velocity of the object producing a pulse signal in response to travel of the object on the...
5898485 Method and apparatus for multiple target ranging  
The present invention is directed to a method and apparatus for detecting reflected pulses from multiple targets in a field of view such that range to each target can be detected with high...
5828443 Distance measuring apparatus  
Disclosed herein is a distance measuring apparatus comprising an irradiation unit for generating an electromagnetic wave, a receiving unit for receiving a reflected wave of the electromagnetic wave...
5767953 Light beam range finder  
A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A...
5745442 Digital time interval measurement engine for a time of flight system  
An exclusively digital timing engine that measures extremely short time intervals for use in time of flight systems such as laser range finding systems. This exclusively digital timing engine...
5619317 Light-wave distance meter based on light pulses  
In a light-wave distance meter based on light pulses, a light pulse radiation device radiates light pulses emitted by a light source device to a target of measurement, a light reception device...
5615004 Laser range finder power management system  
A power management system for a laser range finder including a microcontroller which controls the supply of power by a series of linear regulators to analog electronics and digital electronics such...
5563701 Apparatus and method for measuring distance optically using phase variation  
An apparatus and a method for measuring a distance optically using a phase variation. The apparatus comprises a light emitting circuit for emitting a high-power intermittent pulse light beam to an...
5357331 System for processing reflected energy signals  
An energy pulse capture system senses, receives, and processes signals reflected from a target. In an illustrative embodiment, light pulses are reflected off of a target, received by optical...
5349430 Radar apparatus for a vehicle  
A laser type radar apparatus which inhibits a first alarm at least for a predetermined time period from the pausing of the second alarm.
5336899 Adjustable near infrared rangefinder illuminator  
A near infrared illuminator for enhancing viewing of a target viewed with infrared viewing device when the target falls within a predetermined range. A pulse generator generates a laser pulse in...
5243553 Gate array pulse capture device  
A gate-array pulse capture device senses, receives, and processes signals derived in response to received laser energy, i.e., signals reflected from a target. The reflected signals are initially in...
5221956 Lidar device with combined optical sight  
A laser transmitting and receiving speed and/or range detection device has coaxial internal beam directing and receiving paths for the transmitted and received (reflected) laser energy. A sight is...
5110203 Three dimensional range imaging system  
A pulse of luminant energy of short duration is reflected from a target as n echo source of both two dimensional target imaging data and target depth distance data by optical gating of the echo...
5102219 Method and means in optical distance meters  
In order to improve the measuring accuracy in optical distance meters determining transit-time, the meters having optical senders emitting short pulses (11), optical receivers in which the...
4948246 Leading-vehicle detection apparatus  
The leading-vehicle detection apparatus, mounted on a sensing vehicle, radiates a laser beam from a transmitter of a laser radar. The laser beam is reflected by objects including any vehicle in...
4902126 Wire obstacle avoidance system for helicopters  
An improved wire detection and avoidance system for helicopters is characterized by the use of a solid state laser transmitter which emits radiation in the near infrared wavelength region. Using...
4895440 Laser-based measurement system  
A laser beam three dimensional position measurement system includes a laser transmitter mounted at a stationary reference position at a work site and a receiver mounted on a mobile machine at the...
4834531 Dead reckoning optoelectronic intelligent docking system  
An intelligent, optoelectronic docking system for use in manned or unmanned spacecraft for automatically docking with a target spacecraft. The system is a multifaceted, active sensor using a...
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