Optical shutter

Details Optical shutter Optical shutter

2005-04-06

2008-08-12

Perkey, W. B. (Department: 2862)

Photography

Camera detail

Shutter

C359S228000

Reexamination Certificate

active

07410309

ABSTRACT:
The invention relates to a shutter for an optical imaging system. An amount of opaque fluid is moved in a planar capillary space to open and close the shutter. Depending on the position of the opaque fluid with respect to an optical path passing through the capillary space, the fluid opens or blocks the optical path. In an embodiment, the opaque fluid is moved by a pressure differential caused by a diaphragm which is coupled to a piezoelectric actuator. In another embodiment, the opaque fluid is moved by electrostatic forces.

REFERENCES:
patent: 3405623 (1968-10-01), Ford et al.
patent: 3614211 (1971-10-01), Letter
patent: 4583824 (1986-04-01), Lea
patent: 4701021 (1987-10-01), Le Pesant et al.
patent: 5956005 (1999-09-01), Sheridon
patent: 6033132 (2000-03-01), Seo
patent: 6961167 (2005-11-01), Prins et al.

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