Object detector for an optical instrument

Details Object detector for an optical instrument Object detector for an optical instrument

1991-07-26

1992-10-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

354408, G01J 120

Patent

active

051553473

ABSTRACT:
An object detector for an optical instrument that is suitable for detecting an object of image pickup in the case of the automatic focusing of the optical instrument such as a camera. The object detector is capable of selecting or adjusting angles of oblique direction with respect to the optical axis easily to detect an object.

REFERENCES:
patent: 4812869 (1989-03-01), Akashi et al.
patent: 4904855 (1990-02-01), Nishibe et al.

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