Distance measuring device comprising a two sectioned sensor, eac

Details Distance measuring device comprising a two sectioned sensor, eac Distance measuring device comprising a two sectioned sensor, eac

1984-03-30

1987-08-18

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250204, 354403, 356 4, 356 1, G01J 120, G01J 128

Patent

active

046879145

ABSTRACT:
In the disclosed distance measuring device a light source projects a light on an object to be photographed and at least two photo-electric converters each with several light receiving areas receive light reflected by the object. The quantity of electric charge on these areas varies with the quantity of light incident thereon. An electric charge storage stores the electric charges produced at the two converters and a control determines the operation of the light receiving areas of the photo-electric converters according to the electric charge information produced.

REFERENCES:
patent: 4274735 (1981-06-01), Tamura et al.
patent: 4315159 (1982-02-01), Niwa et al.
patent: 4373791 (1983-02-01), Araki
patent: 4477168 (1984-10-01), Hosoe
patent: 4521106 (1985-06-01), Lambeth
patent: 4522492 (1985-06-01), Masunaga
patent: 4529304 (1985-07-01), Ogawa et al.

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