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| Number | Title | Issue Date |
| 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 acceptance surface so that acceptance angles of the laser beam thereof are mu... | 05/04/2010 |
| 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 light sensors of the laser receiver. The laser receiver automatically a... | 08/19/2008 |
| 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 source and the vertical axis passes through an exit point from which t... | 08/19/2008 |
| 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 transmitter further includes a temperature sensor for detecting the temperatu... | 08/05/2008 |
| 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 wavelength; a plurality of first optical elements for directing the laser beams... | 07/15/2008 |
| 7361874 | Auto focusing mechanism of surveying instrument An auto focusing mechanism is provided in a surveying instrument, such as an electronic level, that is capable of automatically focusing a telescope on a sighted staff. As a focusing lens (21b) is moved by a motor (41) along the optical a... | 04/22/2008 |
| 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 terrain elevation database wherein actual elevations of surrounding lati... | 04/15/2008 |
| 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 aperture. A laser source and a plurality of first optical elements are fixe... | 03/11/2008 |
| 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 camera, determining the distance from the bottom of the object to the ca... | 02/05/2008 |
| 7309854 | Photo-detectors and optical devices incorporating same An opto-electronic device comprising a plurality of photo-detectors, each said photo-detector comprises a plurality of optical detection segments which are connected in parallel, the optical detection segments of said plurality of optical-detectors are interposed so... | 12/18/2007 |
| 7288753 | OLED display with composite photosensor An OLED display and photo-sensor is described, comprising: a substrate; a composite light sensor made up of a plurality of individual thin-film light sensitive elements located over the substrate and connected in parallel to provide a common signal; a first transpar... | 10/30/2007 |
| 7251899 | Prism pole A direct reading prism pole has a tubular housing having an open top, a flange at the open top, a conical bottom portion for wedging the tubular housing into ground soil, a height-adjusting rod partially inserted into the tubular housing by a friction fit, a lip pos... | 08/07/2007 |
| 7241990 | Laser device A laser device includes a target position, an optical component separated a distance J from the target position, and a laser energy source separated a distance H from the optical component, distance H being greater than distance J. A laser source manipulation mechan... | 07/10/2007 |
| 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 anode and cathode terminals of the photosensor is used to determine... | 06/05/2007 |
| 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 photo-detector. The device takes into account the possibility that the additional p... | 05/29/2007 |
| 7214917 | Rotating position measuring instrument A position measuring instrument according to the present invention comprises a turning unit and a fixed unit, irradiates a target to be measured with measuring light to determine a distance, a direction, and a position on the basis of its reflected light. A light so... | 05/08/2007 |
| 7215412 | Flagpole reflectors for laser range finders A system and method are provided for determining a distance to a target. The method includes sending light, at a first time, to a light reflector mounted in a reflector device, receiving light reflected from the light reflector at a second time, and determining the ... | 05/08/2007 |
| 7200945 | Surveying instrument To obtain an accurate survey value even if a centering operation is simplified without using a specific target. When a survey point S is displayed on the screen of a display 20 as an image picked up by a CCD camera 38 in a process to perform an operati... | 04/10/2007 |
| 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. The rod is calibrated with a benchmark elevation by placing the base of... | 03/13/2007 |
| 7177127 | Methods and systems for electrostatic discharge An indirect clamping topology may be used to protect against the damaging effects of an electrostatic discharge event. An input node of a device is protected by a guard. The guard is driven by a signal from a unity-gain amplifier that flows through a resistance. The... | 02/13/2007 |
| 7127822 | Surveying instrument The present invention provides a surveying instrument (20), comprising a surveying instrument main unit (21) which projects a measuring light to an object to be measured and measures a position based on a reflection light from the object to be measured... | 10/31/2006 |
| 7119316 | Strobe light and laser beam detection for laser receiver A device and method detect a moving, relatively thin beam of laser light, and distinguishing between illumination of photodetectors by the beam, and illumination of the photodetectors by an omnidirectional pulse of light. A plurality of photodetector arrays are arra... | 10/10/2006 |
| 7110092 | Measuring device and measuring method for determining distance and/or position A measuring device is provided with a signal generator and a signal receiver, which is located at a measurable distance from the signal generator. The signal generator is designed for the emission of at least two signal beams covering in given relationship to each o... | 09/19/2006 |
| 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 aperture. A laser source and a plurality of first optical elements are fixe... | 09/12/2006 |
| 7095486 | 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 transmitter further includes a temperature sensor for detecting the temperatu... | 08/22/2006 |
| 7092076 | Surveying instrument A surveying instrument, comprising a collimation optical system and a visible laser projecting device with a visible laser light source unit for emitting a point light, wherein the surveying instrument comprises a photodetector for detecting a reflection light enter... | 08/15/2006 |
| 7081917 | Automatic collimation surveying apparatus having image pick-up device An automatic collimation surveying apparatus is provided with a collimation camera optical system (47) of a high magnification ratio; a wide-angle CCD camera optical system (89) having a wide field of view; a touch-panel display (64) for display... | 07/25/2006 |
| 7079228 | 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 wavelength; a plurality of first optical elements for directing the laser beams... | 07/18/2006 |
| 7066276 | Method and apparatus for excavating earth to a desired depth A system and method of facilitating excavating a below grade opening at a construction site in a parcel of land includes a first vehicle having a motor operably connected to at least a pair of traction members and a second excavating vehicle. The motor is operably c... | 06/27/2006 |
| 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 fans or beams for positioning and measuring and include a system integra... | 06/20/2006 |
| 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 incident on respective predetermined detection surfaces are de... | 05/30/2006 |
| 7048240 | Tripod stabilizer and lighted lens carousel An apparatus that is adapted to reduce wobble in a tripod that is used to hold an optical instrument, includes a triangular shaped base plate that includes an attachment to each leg of the tripod. The base plate includes slots at each corner or apex thereof that pro... | 05/23/2006 |
| 7030361 | 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 anode and cathode terminals of the photosensor is used to determine... | 04/18/2006 |
| 7022963 | Laser receiver A laser receiver for detecting the position of incidence of a beam of laser light thereon includes a first photodetector and a second photodetector aligned in series with each other and spaced apart from each other by a gap. If the laser is evenly distributed betwee... | 04/04/2006 |
| 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 projection window. The apparatus uses a laser beam for object detection. The ... | 01/17/2006 |
| 6960749 | Automatic focusing mechanism for mounting on measuring device An automatic focusing mechanism for mounting on a measuring device has a telescope for sighting a leveling rod with pattern marks marked thereon at an equal pitch between each mark, and a photoelectric device for converting an image sighted by the telescope into an ... | 11/01/2005 |
| 6917666 | System and method for table/gantry alignment in imaging systems In an imaging system including a gantry having a patient bore, and a patient table having a cradle, a method of aligning the cradle with a scan plane in the patient bore is disclosed. The method comprises positioning a laser device at least partially within the pati... | 07/12/2005 |
| 6907133 | Automatic surveying system An automatic surveying system includes a telescopic optical system; an image pickup device for picking up an image of a graduated face of a level rod, to which the telescopic optical system is to be collimated, and converting the image into image data; a memory whic... | 06/14/2005 |
| 6870608 | 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 fans or beams for positioning and measuring and include a system integra... | 03/22/2005 |
| 6822228 | Laser device A laser device includes a target position, an optical component separated a distance J from the target position, and a laser energy source separated a distance H from the optical component, distance H being greater than distance J. A laser source manipulation mechan... | 11/23/2004 |
