Electro-optical range finder using three modulation frequencies

Details Electro-optical range finder using three modulation frequencies Electro-optical range finder using three modulation frequencies

1981-03-04

1983-11-08

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

343 12R, 343 14, G01C 308, G01S 1308, G01S 1326

Patent

active

044139047

ABSTRACT:
An electro-optical range finder using three modulation frequencies for providing light beams to be projected. The device is characterized by the fact that the highest frequency is not an approximation to the other two frequencies but the other two frequencies are approximation to each other.

REFERENCES:
patent: 3778159 (1973-12-01), Hines et al.
patent: 3832056 (1974-08-01), Shipp et al.
patent: 3900259 (1975-08-01), Mott et al.
patent: 4146328 (1979-03-01), Hullein et al.
patent: 4171907 (1979-10-01), Hill et al.

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