Slit lens autofocus system

Details Slit lens autofocus system Slit lens autofocus system

1987-05-28

1989-03-14

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250201, 354408, G01J 136

Patent

active

048126403

ABSTRACT:
An autofocus system employing a slave lens which is so shaped or configured as to produce a strip of radiation on a pair of detectors used in the autofocus system thus enabling an attractive and useful arrangement for photographic or video camera apparatus.

REFERENCES:
patent: 3682071 (1972-08-01), Hosoe
patent: 4185191 (1980-01-01), Stauffer
patent: 4309603 (1982-01-01), Stauffer
patent: 4481413 (1984-11-01), Wilwerding

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