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7327440 |
Distance measuring device
A distance measuring device is disclosed which can measure the distance to an object located within a known range. The device uses beam splitters and lenses to focus and direct energy reflected...
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7034950 |
Laser grid for measuring distance
The laser grid ( 1 ) permits a single-sided installation in order to record a person or object in the monitoring area. The grid operates using punctiform sensor units ( 3 ), each including at least...
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7022966 |
System and method of light spot position and color detection
A position and color detection sensor (for detecting a position of a light spot in a light distribution that can include stray light components, e.g. from other lasers, ambient lighting etc.)...
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6806968 |
Apparatus and method for measuring a workpiece
The invention is directed to an apparatus for measuring a workpiece and includes a coordinate measuring apparatus or a machine tool. The invention further relates to a method for measuring the...
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6522394 |
Rangefinder device and camera
A rangefinder device and a camera are provided, which, in measuring a distance by the active method, are capable of properly measuring the distance even if the object to be measured is located at a...
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6522393 |
Distance measuring device
A distance measuring device includes a light emitting system that emits light toward an object that is subject to a distance measurement. A light receiving system is provided to receive optical...
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6492652 |
Opto-electronic distance sensor and method for the opto-electronic distance measurement
The opto-electronic sensor ( 1 ) for the measurement of the distance (d) to an object ( 9 ), resp., for the identification of an object ( 9 ) within a monitoring zone ( 90 ) is based on...
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6433857 |
Optical traingulation displacement sensor using a diffraction grating
Disclosed herewith is an optical triangulation displacement sensor using a diffraction grating. The optical triangulation displacement sensor includes a light source element, a condenser, a...
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6359680 |
Three-dimensional object measurement process and device
A three-dimensional object measurement process and device are disclosed by means of optical image capture, projection of patterns and triangulation calculations. The pattern projection unit and the...
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6353478 |
Digital range sensor system
A digital range sensor comprises a light source, an optical element to focus the light from the source down to a small spot on a target, a second optical element that is mounted obliquely from the...
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6317200 |
Positional measurement with normalized signal processing
A measurement apparatus (10, 110) and methods to perform positional types of measurement with normalization respective to either or both of light beam (16, 116) intensity and measurement target...
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6133988 |
Device for the measurement of distances or of the angle of incidence of a light beam
The device for the measurement of distances and of the angle of incidence of a light beam comprises an optical emitting system in order to project the light beam onto the object to be measured, and...
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5995681 |
Adjustment of sensor geometry model parameters using digital imagery co-registration process to reduce errors in digital imagery geolocation data
A digital image processing system reduces errors in the parameters of a sensor geometry model, through which points in a captured digital image are geolocated to the surface of the earth by means...
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5963309 |
Distance measuring system
A distance measuring system of the active type wherein a distance ranging from a short distance to a great distance can be measured with a high degree of accuracy in accordance with a ratio between...
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5905567 |
Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device
An apparatus for optimizing sub-pixel resolution in a triangulation based target distance measuring device at a desired stand-off distance has a laser light source projecting a light beam along a...
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5828057 |
Method and arrangement for target seeking
The invention relates to a method and arrangement for target seeking, where a rotatable instrument emits an electromagnetic radiation and automatically searches for a target reflector by detecting...
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5808726 |
Distance measurement apparatus
This invention has as its object to provide a distance measurement apparatus which can relatively easily control the clock generation timing and can prevent dark currents generated by accumulation...
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5756987 |
Photoelectric displacement detector having movable detecting elements
An improved photoelectric displacement detector is disclosed which includes (a) a light receiving part (1) having a pair of solar battery panels (1b, 1c) vertically arranged adjacent to each other,...
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5754280 |
Two-dimensional rangefinding sensor
A two-dimensional rangefinding sensor of the present invention consisting of an illuminating device for projecting light beams, which undergoes luminance modulation at a predetermined frequency for...
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5751406 |
Range finding apparatus
A range finding apparatus includes; M photoprojectors (M: greater than one) provided in one-to-one correspondence with M range-finding axes radially extending within a virtual plane for forwardly...
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5729339 |
Swing angle measuring apparatus for swing free operation of crane
A swing angle measuring apparatus generates feedback signals for closed loop regulation of a load swinging motion in operation of a crane. The swing angle measuring apparatus measures...
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5719663 |
Range finder apparatus
An active type range finder apparatus comprises a light projecting element having a base, a lead frame disposed on the base, at least one light emitting member disposed on the lead frame for...
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5677760 |
Rangefinding device for use in a camera
A rangefinding device for use in a camera comprising a projection section for projecting a light beam emitted by a light source through a projection lens to an object, a light pickup section...
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5640005 |
Active trigonometrical distance measuring apparatus with delay circuits
An inexpensive and easily adjustable distance measuring apparatus judges whether an object is located at a far distance or at a near distance relative to a certain set distance. The distance...
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5606409 |
Laser ranging system calibration device
A calibration device for a laser ranging system includes an interferometer assembly and a beam path magnifier assembly which is optically coupled to the interferometer assembly to receive a...
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5534991 |
Active distance measuring apparatus
An active type distance measuring apparatus is provided with sensors for a plurality of distance measuring fields, and, in performing multi-point distance measuring, obtains distance information in...
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5457525 |
Distance measuring device having light receiving areas of different sizes
A distance measuring device is arranged to emit spot-shaped light toward a subject and receive light reflected from the subject by means of a light receiving sensor having a plurality of light...
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5354983 |
Object detector utilizing a threshold detection distance and suppression means for detecting the presence of a motor vehicle
A method and apparatus are disclosed which allow for the detection of an object (14) by the generation of a radiated beam (18) and a subsequent reflection by the object (14) of a portion (20)...
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5323222 |
Distance-measuring device for use with camera
A distance measuring device contains a light-projecting section for projecting luminous flux onto a subject. A light-receiving section is placed the base length away from the light-projecting...
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5294802 |
Digitally active distance measurement apparatus for camera or the like
In the first aspect, light reflected by an object upon projection of a beam on the object is received by a light-receiving section. A photocurrent corresponding to the irradiated position is...
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5245398 |
Time-multiplexed multi-zone rangefinder
A low cost, reflectivity insensitive rangefinder for performing time-multiplexed multi-zone auto-ranging comprises a light projecting means energizable for projecting a beam of light to illuminate...
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5138358 |
Autofocusing apparatus utilizing intermittent light projection
An autofocus apparatus for use with a light projection device which projects light to an object, and a storage sensor which alternately receives light reflected from the object when the light is...
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5113080 |
Non-linear displacement sensor based on optical triangulation principle
An optical displacement measuring apparatus utilizing triangulation, includes a laser for projecting a laser light beam with a first optical axis onto a surface of an object whose displacement is...
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5056922 |
Method and apparatus for monitoring the surface profile of a moving workpiece
An optical inspecting apparatus and the method thereof, including a series of optical units for rapidly acquiring the three-dimensional surface profile of a moving object. Each optical unit...
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4979815 |
Laser range imaging system based on projective geometry
A range imaging system, and a method for calibrating such a system are based on the principles of projective geometry. The system comprises four subsystems: (1) a laser and a cylindrical lens or...
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4976537 |
Distance measuring device with plural differing reference voltages
A distance measuring device is provided with a plurality of comparators which are respectively connected to a plurality of light receiving elements for receiving light reflected from a subject. The...
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4963017 |
Variable depth range camera
A variable depth triangulation ranging system is reconfigurable in real time in the sense that any two of the three performance measures, standoff distance, depth of field, and range resolution at...
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4952911 |
Scanning intrusion detection device
A scanning intrusion detection device is capable of monitoring a large volume of either interior or exterior space from a single relatively inexpensive unit. This intrusion detection device...
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4947202 |
Distance measuring apparatus of a camera
A distance measuring apparatus of a camera is capable of performing passive and active distance measurements. A pair of light-receiving optical systems for forming images of an object in focus on...
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4943157 |
Fiber optic triangulation gage
Methods and apparatus for determining the curvature of a surface by use of multiple discrete triangulation sensors are described. Robustness in the face of an extreme manufacturing environment is...
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4921345 |
Spatial filter type speed measuring apparatus
Light equipment is provided for irradiating the measuring object and forming light spot on it through the collimate lens. Reflected light from the measuring object is incident to the spatial filter...
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4893025 |
Distributed proximity sensor system having embedded light emitters and detectors
A distributed proximity sensor system is provided with multiple photosensitive devices and light emitters embedded on the surface of a robot hand or other moving member in a geometric pattern. By...
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4875777 |
Off-axis high accuracy structured light profiler
An optical structured light profiler for evaluating the surface shape of a workpiece along a particular cross section of interest. The profiler includes an illumination optical system which...
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4868593 |
Light projector for a distance measuring device
A light projector for a distance measuring device comprises a lens barrel holding projecting lenses and a lamp housing rotatably engaged with the lens barrel. The lamp housing containing a flash...
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4865435 |
Optical system for rangefinding devices
An optical lens system for a rangefinding device consists of from the object end a first lens with a convex surface directed to the other end and a second meniscus lens with a convex surface...
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4830485 |
Coded aperture light detector for three dimensional camera
High speed readout is achieved in a triangulation ranger by a coded aperture light detector which provides a direct digital representation of a range or height position. A light spot reflected from...
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4814810 |
Active-type auto-focusing mechanism
An active-type autofocusing mechanism includes a light projector for projecting a light beam from a light source toward an object. A photo detector arrangement includes separate position-sensitive...
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4796998 |
Method for mobile survey of road surface
A road surface illuminated by sunlight is scanned with a laser beam at right angles to the direction of travel, the intensity of the laser beam being intensity modulated with a predetermined...
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4775235 |
Optical spot scanning system for use in three-dimensional object inspection
An optical spot scanning system for use in three dimensional measurement and inspection of an object surface wherein a deflector means is placed in the path of the projection axis of the spot...
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4768053 |
Distance measuring apparatus
A distance measuring apparatus of the present invention converges the reflected light on objects through a converging lens and detects the light by a multi-divisional photodiode. The...
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