Distance detector device

Optics: measuring and testing – Range or remote distance finding – With photodetection

Patent

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Details

354403, G01C 310, G03B 708

Patent

active

044364180

ABSTRACT:
Light projected from active lighting means or light projecting means toward an object is reflected by said object and a light spot is produced on a light sensitive element by the reflected light. A distance to said object is determined by sensing a position of said light spot. When a shade detector scanning the surface of the light sensitive element shields the light spot generated by the light reflected from the object, a photoelectric output from said light sensitive element is varied. Correspondence between the position of said shade detector when said photoelectric output is varied and a distance to said object enables a measurement of the distance to said object.

REFERENCES:
patent: 2468042 (1949-04-01), Cranberg
patent: 3224319 (1965-12-01), Robert et al.
patent: 3938893 (1976-02-01), Nanba et al.
patent: 4304487 (1981-12-01), Odone et al.

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