Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1996-02-08
1998-07-21
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
356 408, 3561414, G01B 1126, G01C 308, G01C 100
Patent
active
057841551
ABSTRACT:
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 main unit comprises an emitter for emitting the laser beam, a rotating unit for rotating and scanning the laser beam, a tilting mechanism for tilting the laser beam at an arbitrary angle at least in one direction with respect to a horizontal plane, a rotating angle detector interlocked with the rotating unit and for detecting irradiating direction of the laser beam, a reflection light detector for detecting reflection light from the object reflector, and an alignment display unit for detecting a deviation of direction with respect to the object reflector and a deviation of tilt angle based on a signal from the reflection light detector and for obtaining information on the deviation of direction or the tilt angle, the laser beam emitted from the main unit is irradiated to scan, the center of the object reflector is determined based on the laser beam reflected from the object reflector during scanning process, information on a deviation of direction of the main unit and a deviation of tilt angle is displayed, or direction and tilt angle of the main unit are corrected automatically based on the deviation of direction thus obtained or on the deviation of tilt angle thus obtained.
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Davidson Richard W.
Hirano Satoshi
Ohtomo Fumio
Buczinski Stephen C.
Kabushiki Kaisha Topcon
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