Camera focus detecting device

Details Camera focus detecting device Camera focus detecting device

1980-02-01

1982-10-05

Rubinson, G. Z.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250204, G03B 310, G03B 708

Patent

active

043525458

ABSTRACT:
An automatic focus detecting device for a camera adapted to be miniaturized and provided in the form of an integrated circuit. Two arrays of light receiving elements or sensors are disposed in two planes parallel to the surface of the film in the camera on either side of the image plane. The output signals from the sensors are processed in a disclosed electronic circuit to detect desired focus conditions such as front focus, proper focus and rear focus for automatically moving the photographing lens to the position of proper focus.

REFERENCES:
patent: 3450883 (1969-06-01), Thomas
patent: 4220850 (1980-09-01), McEachern
IBM Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972, pp. 504, 505, Optical Surface Microtopography Measurement and/or Automatic Focussing.

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