Optical low pass filter with vibrating optical plate, and...

Details Optical low pass filter with vibrating optical plate, and... Optical low pass filter with vibrating optical plate, and...

2005-02-04

2008-12-09

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Optics

C348S342000, C359S308000

Reexamination Certificate

active

07463301

ABSTRACT:
A plane parallel plate91constituted with optical glass and disposed further frontward relative to an image-capturing element10is caused to swing and vibrate by alternately expanding and contracting piezoelectric elements92aand92c. As the plane parallel plate91becomes slanted relative to the image-capturing element10, the angle of incidence of subject light20changes, causing the position of the subject image projected on the image-capturing element10to move from point A to point B. As a result, the image forming position vibrates parallel to the x-axis, thereby enabling the plane parallel plate91to function as a low pass filter for the spatial frequency manifesting along the x direction.

REFERENCES:
patent: 6356379 (2002-03-01), Kreymerman
patent: 6473120 (2002-10-01), Hirasawa et al.
patent: 6587148 (2003-07-01), Takeda et al.
patent: 7280145 (2007-10-01), Takizawa et al.
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patent: A 06-189318 (1994-07-01), None
patent: A 09-069985 (1997-03-01), None
patent: A 2000-138849 (2000-05-01), None
patent: WO 01/43426 (2001-06-01), None

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