Light control apparatus and optical apparatus

Details Light control apparatus and optical apparatus Light control apparatus and optical apparatus

2008-05-20

2008-05-20

Perkey, W. B. (Department: 2862)

Photography

Camera detail

Shutter

C396S469000

Reexamination Certificate

active

07374353

ABSTRACT:
There is provided a light control apparatus that maintains the overall apparatus size small, increases the number of stop stages, and is suitable for both the shutter and stop actions. A light control apparatus includes a first actuator, a second actuator, a first light shielding member driven by the first actuator, and a second light shielding member driven by the second actuator, wherein in a stop adjusting action, the first and second actuators drive the first and second light shielding members and adjust an aperture formed by the first and second light shielding members, and wherein in a shutter action, the second actuator drives the second light-shielding member for a light shielding action.

REFERENCES:
patent: 3673942 (1972-07-01), Tingley
patent: 4798375 (1989-01-01), Yamamoto
patent: 5970268 (1999-10-01), Aoshima
patent: 6089760 (2000-07-01), Terada
patent: 2003/0156832 (2003-08-01), Nomura et al.
patent: 2006/0002702 (2006-01-01), Masuda et al.
patent: 2002-350924 (2002-12-01), None

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