Light quantity adjusting device

Details Light quantity adjusting device Light quantity adjusting device

2006-09-12

2006-09-12

Mahoney, Christopher E (Department: 2851)

Photography

Camera detail

Diaphragm shutter unit

C396S463000, C396S494000, C396S508000

Reexamination Certificate

active

07104707

ABSTRACT:
A device is provided having one or more light quantity controlling members that move into, and out of, an opening portion through which light passes and which is formed by at least a portion of inner diameter sides of a first stator and a second stator, thus controlling the amount of light passing therethrough. The one or more light quantity controlling members are disposed between the magnet and the second stator.

REFERENCES:
patent: 4693580 (1987-09-01), Hanamori et al.
patent: 4772904 (1988-09-01), Otsuka et al.
patent: 5548367 (1996-08-01), Katagiri
patent: 6139202 (2000-10-01), Depatie et al.
patent: 6340252 (2002-01-01), Kawano
patent: 2004/0062543 (2004-04-01), Miyawaki

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