Automatic focus adjusting device in camera system

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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358347, G03B 1336

Patent

active

053694619

ABSTRACT:
An automatic focus adjusting device in a camera system includes a focus detecting circuit for a focusing state of an object image formed on an image plane by a photographic lens, a control circuit for producing a control signal on the basis of an output of the focus detecting circuit and for outputting the control signal to the photographic lens to control the same, and a characteristic detecting circuit for detecting a predetermined optical characteristic of the photographic lens. The control circuit is arranged to transmit the control signal to the photographic lens by defining as a parameter a change of the optical characteristic detected by the characteristic detecting circuit.

REFERENCES:
patent: 4735494 (1988-04-01), Makino et al.
patent: 4772909 (1988-09-01), Ogasawara
patent: 4790649 (1988-12-01), Haroda et al.
patent: 4857951 (1989-08-01), Nakajima et al.
patent: 5153629 (1992-10-01), Kaneda

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