Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1995-11-30
1998-06-16
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
3561413, 3561511, 3561513, G01C 308, G01B 1126
Patent
active
057679525
ABSTRACT:
A surveying instrument, which comprises an object to be irradiated, a projection system provided on a range finder or on a range finding angle measuring instrument having a range finder and for emitting a laser beam toward the object, driving means for driving a laser emitting source of the projection system, and control means for controlling emitting condition of the laser beam via the driving means based on a distance data from the range finder to the object to be irradiated, whereby, in case there is a deviation between the preset distance and a distance measured by the range finder, the control means changes irradiation intensity of the laser beam, or in case there is a deviation between the preset distance and a distance measured by the range finder, the control means changes irradiation intensity of the laser beam and also changes time interval of the intensity changes according to extent of the deviation, and position information and instruction are transmitted to the object to be irradiated side using the laser beam as an information transmitting medium to facilitate positioning of the object to be irradiated.
REFERENCES:
patent: 3898007 (1975-08-01), Wiklund
patent: 3907435 (1975-09-01), Roodvoets
patent: 3915574 (1975-10-01), Hernqvist
patent: 4029415 (1977-06-01), Johnson
patent: 4560270 (1985-12-01), Wiklund et al.
patent: 5051934 (1991-09-01), Wiklund
Hirano Satoshi
Kobayashi Haruhiko
Ohtomo Fumio
Buczinski Stephen C.
Kabushiki Kaisha Topcon
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