Viewing systems

Details Viewing systems Viewing systems

1977-04-12

1980-10-07

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

250213VT, 358 95, G01B 1126, H04N 700

Patent

active

042265290

ABSTRACT:
The invention relates to a pulsed laser viewing system adapted to view range intervals in a scene by gating the detector signal; according to the invention, the viewing system also includes a switching device for repetitive interchange of the range interval viewed so that the image contrast of a viewed target may be repetitively alternated between positive and negative. The switching device may operate to interchange either the detector gating time periods or the detector signal channel. Alternatively, the switching device may operate to interchange time delays applied to the detector signal before gating.

REFERENCES:
patent: 3305633 (1967-02-01), Chernoch
patent: 3443870 (1969-05-01), Morgan et al.
patent: 3463588 (1969-08-01), Meyerand, Jr. et al.
patent: 3499110 (1970-03-01), Heckman, Jr.
patent: 3899250 (1975-08-01), Bamberg et al.

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