Optical shutter

Details Optical shutter Optical shutter

2005-11-15

2005-11-15

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Light interference

Electrically or mechanically variable

C359S587000, C359S589000

Reexamination Certificate

active

06965477

ABSTRACT:
An optical shutter including a multi-layer fixed filter and a multi-layer movable filter arranged with a gap therebetween controls the transmittance of light passing through the multi-layer filters. The optical shutter includes minute driving elements provided on the movable filter. Operating the minute driving elements varies a distance of the gap defined between the fixed filter and the movable filter. Operation of the movable filter is restricted by a stopper that comes into contact with the movable filter when the gap has the maximum distance and by a bump formed on the fixed filter. The minute driving elements are joined to the movable filter with elastic bonding layers therebetween.

REFERENCES:
patent: 5142414 (1992-08-01), Koehler
patent: 5430574 (1995-07-01), Tehrani
patent: 5821989 (1998-10-01), Lazzaro et al.
patent: 5885468 (1999-03-01), Kozlowski
patent: 6833957 (2004-12-01), Sato
patent: 2002/0154387 (2002-10-01), Mori et al.
patent: 2002/0196524 (2002-12-01), Huibers et al
patent: 2003/0081319 (2003-05-01), Hsu
patent: 3-169637 (1991-07-01), None
patent: 09/218360 (1997-08-01), None

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