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Match Document Document Title
8060344 Method and system for automatically performing a study of a multidimensional space  
A method and system comprising a Master station, a processor and one or more targets that allows a user of said system to automatically generate a 3 dimensional graphical representation of a...
RE42880 Strobe light and laser beam detection for laser receiver  
A laser receiver detects a thin beam of laser light and distinguishes between the beam of laser light and an omni-directional pulse of light from a strobe by the use of an additional...
7710546 Laser receiver and laser receiving system  
In a laser receiver receiving a laser beam from a laser transmitter and a laser receiving system composed of a plurality of laser receivers, a plurality of photo devices are arranged on an...
7644505 Levelling rod, level determining apparatus for said rod, and level determining method  
The levelling rod (1) for a level determining apparatus (2) has position indications therealong along expressed by barcode symbols (11, 12). At least some of said barcode symbols are color barcode...
7589829 Laser measuring system  
A laser measuring system, which comprises a laser rotary irradiation device for forming a laser reference plane by projecting a laser beam in rotary irradiation, and a photodetection device for...
7414704 Laser light receiver apparatus with automatically adjustable zero-reference point  
An improved laser light receiver is provided that senses a laser light beam and determines positional elevation of the laser receiver based on the position where the laser light beam impacts the...
7414241 Laser device  
A laser device includes a virtual source configured to aim laser energy that originates from a true source. The virtual source has a vertical rotational axis during vertical motion of the virtual...
7408626 Laser transmitter with thermally induced error compensation and method of transmitter compensation  
The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The...
7400386 Combined laser altimeter and ground velocity measurement apparatus  
Combined laser-based apparatus for determining both altitude and ground velocity of an aircraft comprises: a laser source for emitting pulsed laser beams substantially at a predetermined...
7359038 Passive determination of ground target location  
Ground targets can be passively identified on uneven terrain from an observation point elevation above a known reference point, a line-of-sight inclination angle, an azimuth angle and a digital...
7342647 Compact laser altimeter system  
A laser-based altimeter for use on-board an aircraft comprises: a first housing including a hollow cavity and an exit aperture, and a second housing including a hollow cavity and an entrance...
7327442 Methods and systems of calculating the height of an object observed by a camera  
Methods and systems for automatically determining the height of an object observed by a camera are described. One such method involves determining the distance from the top of the object to the...
7227121 Receiver circuit with “m” sectors each with “n” channels  
A laser beam receiver with non-interdigitated photosensors arranged in a repeating pattern of “n” channels of photosensors in each of “m” sectors is disclosed. The photocurrent from both the ano...
7224473 Strobe light and laser beam detection for laser receiver  
A laser receiver detects a thin beam of laser light and distinguishes between the beam of laser light and an omni-directional pulse of light from a strobe by the use of an additional...
7190439 Direct reading stadia rod for use with laser level  
A direct-reading stadia rod includes a flexible tape and a sensing head that is movable therealong. The sensing head includes a keyboard, a movement sensor, a laser beam receiver, and a display....
7106424 Compact laser altimeter system  
A laser-based altimeter for use on-board an aircraft comprises: a first housing including a hollow cavity and an exit aperture, and a second housing including a hollow cavity and an entrance...
7064819 Versatile transmitter and receiver for position measurement  
Field-deployable spatial positioning or measurement systems are provided for improved versatility, reliability and performance. The spatial positioning or measurement systems use rotating laser...
7053394 Recording device of master disk for information recording medium  
Two light beams are incident on the same position on a surface of an object (105) to be measured obliquely from upper sides facing each other, and positions at which the reflecting light beams are...
6987562 Object detecting apparatus  
An object detecting apparatus having a laser radar with a single light sensing element for foreign matter detection is disposed behind a front grille of a vehicle. The apparatus includes a...
6750953 Position detecting laser receiver  
Receiver circuits are provided for detecting a target light source such as a swept laser beam. The circuits include a photodetector adapted to produce a first detector output signal and a second...
6714284 Track and field measuring apparatus and method  
The present invention relates to a distance measuring device for measuring athlete throws in a throwing event at a track and field meet. The device is setup in a position outside a throwing circle...
6693706 Laser reference system and method of determining grade rake  
A laser reference system orients a reference plane of laser light generated by a transmitter so compensation is made for a rake angle between the first and second axes of the transmitter and an...
6628373 Laser transmitter with thermally induced error compensation and method of transmitter compensation  
The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The...
6618133 Low cost transmitter with calibration means for use in position measurement systems  
An improved, low-cost optical transmitter and method useful in a three-dimensional measurement system wherein a plurality of operational parameters of said transmitter are calibrated during...
6573981 Electronic level  
An electronic level for converting a pattern on a leveling rod to be collimated by photoelectric conversion and for determining difference of elevation, wherein there is provided an irradiation...
6545751 Low cost 2D position measurement system and method  
An improved low cost theodolite position measurement system and process which is particularly useful in enabling a single operator to conveniently set up the system and calculate elevation (el) and...
6512859 Electronic level  
A vibration sensor is provided in a telescope. When vibrations are detected by the vibration sensor, the vibrating state of a reflecting mirror is estimated by the vibration sensor. When an image...
6493067 Rotary laser irradiating system  
The rotary laser irradiating system according to the present invention comprises a main unit, a rotator rotatably mounted on said main unit, and a range-finding unit disposed on said main unit,...
6450267 Construction equipment control system  
The present invention relates to a construction equipment control system, which comprises a plurality of rotary laser irradiating systems for forming laser reference planes by irradiating laser...
6443235 Rotary laser irradiating apparatus and construction machine control system  
The present invention provides a rotary laser irradiating apparatus, which comprises a laser source, a rotator for forming a laser reference plane by rotary irradiation of laser beam from said...
6437860 Method and apparatus for angle measurement or to define angular location of an object  
The invention relates to a method and an apparatus for angle measurement or for the determination of an angle of position for an object. The method comprises the use of a beacon having a known...
6411372 Geodetic instrument with laser arrangement  
A geodetic instrument is disclosed which is set up over a ground point by a tripod and whose telescope is swivelable about a tilt axis and a rotational axis and which is outfitted with a laser...
6384902 Surveying apparatus comprising a height measuring device  
To determine the height of a surveying apparatus (1) above a point (15) on the ground, the surveying apparatus (1) has a distance measuring device and is provided with a front attachment (11) which...
6337473 Beam position detector having a photodetection unit  
A beam position detector, which comprises a photodetection unit for receiving a laser beam and issuing a signal corresponding to photodetection amount, wherein said photodetection unit has a first...
6292258 Laser receiver with out-of-plumb indication and compensation  
A laser receiver is provided that is capable of providing an accurate indication of laser receiver tilt and correcting a generated elevation signal based upon the indicated laser receiver tilt. In...
6249338 Laser survey instrument  
A laser survey instrument, which comprises at least a main unit for emitting a laser beam and an object reflector for reflecting the laser beam from the main unit toward the main unit, whereby said...
6172742 Reference irradiation beam detecting apparatus  
Conventional reference beam detecting apparatus require the use of transits and levels in addition to the reference beam detecting apparatus itself to make the operation of determining the height...
6167629 Electronic level and a leveling rod for use in combination with the same  
A leveling rod for an electronic level has a plurality of bar-shaped marks disposed adjacent each other in a longitudinal direction along the leveling rod in parallel with each other and...
6166802 Beam detector  
A reference beam detector according to the invention can be used to accurately and efficiently perform a level shifting operation by means of a reference beam and effectively eliminate the use of...
6151106 Laser irradiation system  
A laser irradiation system according to the present invention comprises a laser light emitter for emitting a laser beam, a rotator for irradiating the laser beam emitted from said laser light...
6133991 Multi-segment composite photocell device  
An improved photocell configuration is provided to create a more accurate laser receiver that not only is very accurate and flexible in its operational capabilities, but also can greatly reduce the...
6067148 Execution height display device and execution height setting system  
An execution height setting system 100 includes laser device 102 for setting a horizontal reference plane by rotatably radiating a laser beam and a execution height display device 104. The...
5894344 Elevation Measurement apparatus  
An elevation measurement instrument including a support ruler, an optical instrument and a bracket pivotally coupling the optical instrument to the support ruler. The optical instrument includes a...
5886776 Laser beam receiver circuit  
A laser beam receiver is provided wherein the position of a laser beam incident upon an array of a plurality of photosensitive cells is calculated by coupling the plurality of photosensitive cells...
5777899 Horizontal position error correction mechanism for electronic level  
In a horizontal position error correction mechanism for an electronic level according to the present invention, a collimation optical system collimates a level rod, and a calculation processing...
5760909 Integrated apparatus and method for EDM and GPS surveying  
An electronic distance measurement EDM apparatus (41) for attachment to a range pole (42), having a GPS antenna (12) having a circular exterior (46) with a reflective outer surface (54) for...
5742069 Digitally filtered laser receiver  
A digitally filtered laser receiver includes a plurality of radiation sensors spacially arranged in a manner which identifies a relative position of the sensors with respect to a rotating laser...
5742378 Electronic leveling apparatus and leveling staff used with the same  
An electronic leveling apparatus and associated leveling staff are designed to form an image of scale patterns of the leveling staff on a photo-electric transducer by means of a telescopic optical...
5689330 Laser plane generator having self-calibrating levelling system  
A self-levelling laser generator apparatus (10) includes a housing (12), a light source in the housing which produces a beam of collimated light, and a self-levelling mechanism (18). The...
5637866 Apparatus and method for optically detecting and electronically analyzing the location of a projectile in a target plane  
The invention comprises a method, apparatus and equipment for detecting the hit location of a projectile passing through a target plane. A light source generates at least two zones of light which...
Matches 1 - 50 out of 93 1 2 >