Optical apparatus with aperture controller

Details Optical apparatus with aperture controller Optical apparatus with aperture controller

2008-04-29

2010-06-22

Fuller, Rodney E (Department: 2862)

Photography

Exposure control circuit

C396S218000, C396S223000

Reexamination Certificate

active

07742694

ABSTRACT:
An optical apparatus, such as an image pickup apparatus, includes a detector configured to detect whether a manual aperture operation unit is operated by an amount greater than or equal to a predetermined amount during automatic aperture control. When an aperture fixing switch is operated or when the detector detects that the manual aperture operation unit is operated by an amount greater than or equal to the predetermined amount, automatic aperture control is disabled and manual aperture control is enabled.

REFERENCES:
patent: 5548371 (1996-08-01), Kawahara et al.
patent: 5666570 (1997-09-01), Ohsawa
patent: 5867737 (1999-02-01), Shiokama
patent: 6-258682 (1994-09-01), None

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