Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1976-12-27
1979-01-30
Buczinski, S. C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
250560, 356 4, G01C 300, G01C 308
Patent
active
041369491
ABSTRACT:
A beam of light from a light source is reflected by a polyhedral mirror which is continuously rotating in a constant speed around its axis. The reflected beam sweeps on an object and passes a predetermined point of the object surface. A dispersed light from the point is formed into a beam through a set of slits and reaches a light detector.
The polyhedral mirror has a plurality of mirror surfaces each of which is spaced at a distance from the rotary axis thereof, different from the adjacent mirrors.
A pair of targets are arranged in the beam axis to the light detector. Dispersed light beams from both upper and lower targets also reach into the light detector.
The distance between a point of the object and the beam line from the light source is computed from the distances of the mirror surfaces from the rotary axis of the polyhedral mirror, the distance between the upper and lower targets and the inclination angles of the mirror surfaces from the beam line, and the angles of the reflected beam hitting the predetermined point or the targets.
REFERENCES:
patent: 3217592 (1965-11-01), Braun et al.
patent: 3554646 (1971-01-01), Carlson
patent: 3565531 (1971-02-01), Kane et al.
patent: 3671726 (1972-06-01), Kerr
patent: 3692414 (1972-09-01), Hosterman et al.
patent: 3802774 (1974-04-01), Eschler et al.
patent: 3856399 (1974-12-01), Hosoe et al.
patent: 3923395 (1975-12-01), Bodlaj
Hayamizu Mamoru
Tanigaki Yasushi
Adams Bruce L.
Buczinski S. C.
Burns Robert E.
Kabushiki Kaisha Daini Seikosha
Lobato Emmanuel J.
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