Infra-red and ultraviolet filtration in projection systems

Details Infra-red and ultraviolet filtration in projection systems Infra-red and ultraviolet filtration in projection systems

2006-11-21

2006-11-21

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Color filter

C353S098000, C353S099000, C353S102000, C353S121000, C349S005000, C349S007000, C349S008000, C362S296040

Reexamination Certificate

active

07137708

ABSTRACT:
A method of generating a projection beam for projecting an image includes collimating the projection beam and filtering infra-red or ultraviolet radiation from the projection beam after the projection beam has been collimated.

REFERENCES:
patent: 2956273 (1960-10-01), Fruengel
patent: 5777804 (1998-07-01), Nakamura et al.
patent: 5786934 (1998-07-01), Chiu et al.
patent: 6547396 (2003-04-01), Svardal et al.
patent: 6997565 (2006-02-01), Sekiguchi et al.
patent: 2002/0171809 (2002-11-01), Kurtz et al.
patent: 2002/0176255 (2002-11-01), Yamauchi et al.
patent: 2003/0179346 (2003-09-01), Mihara
patent: 2003/0214631 (2003-11-01), Svardal et al.

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