Automatic focusing apparatus for cameras

Details Automatic focusing apparatus for cameras Automatic focusing apparatus for cameras

1981-07-13

1983-06-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250201, 354 25, G01J 120

Patent

active

043895662

ABSTRACT:
An automatic focusing apparatus for a camera comprises a first focusing optical system with a half mirror transmitting light from a subject, a second focusing optical system with a mirror to lead another light from the subject to the half mirror and a single focusing element for receiving said different lights thereby focusing detection.

REFERENCES:
patent: 4359634 (1982-11-01), Saito et al.

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