Blanking device and projector having the same

Details Blanking device and projector having the same Blanking device and projector having the same

2006-07-04

2006-07-04

Dowling, William C. (Department: 2851)

Optics: image projectors

Light shield, mask, hood, or diaphragm

C359S738000, C353S122000

Reexamination Certificate

active

07070285

ABSTRACT:
The present invention is to provide a blanking device of projector, comprising a blanking piece having at least one transparent part such that by installing the blanking piece at the optical path of the projector, it is possible to blank the projection of the projector and block most of projecting light, while a small part of the projecting light may still pass through the transparent part of the projector and project out.

REFERENCES:
patent: 5537166 (1996-07-01), Keelan et al.
patent: 5924783 (1999-07-01), Jones
patent: 6637894 (2003-10-01), Dewald et al.
patent: 6648476 (2003-11-01), Watanabe et al.
patent: 6942349 (2005-09-01), Inamoto
patent: 2005/0024605 (2005-02-01), Hamada
patent: 2005/0122721 (2005-06-01), Hori
patent: 2005/0151933 (2005-07-01), Tsai et al.
patent: 2005/0219474 (2005-10-01), Hara et al.
patent: 2005/0259230 (2005-11-01), Yang et al.

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