Lens control device

Details Lens control device Lens control device

1994-08-09

1995-08-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

359698, G01J 120

Patent

active

054381908

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.

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