Projector with foreign matter detecting means

Details Projector with foreign matter detecting means Projector with foreign matter detecting means

2007-04-10

2007-04-10

Perkey, W. B. (Department: 2851)

Optics: image projectors

Miscellaneous

C353S099000, C353S119000

Reexamination Certificate

active

11455797

ABSTRACT:
A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.

REFERENCES:
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patent: 5077467 (1991-12-01), Barron et al.
patent: 6231191 (2001-05-01), Shiraishi et al.
patent: 6652104 (2003-11-01), Nishida et al.
patent: 6705356 (2004-03-01), Barton et al.
patent: 6929370 (2005-08-01), Kobayashi et al.
patent: 7093943 (2006-08-01), Kobayashi et al.
patent: 2002/0122161 (2002-09-01), Nishida et al.
patent: 2004/0031095 (2004-02-01), Yamamoto
patent: 11-119343 (1999-04-01), None
patent: 2002006397 (2002-01-01), None
Machine translation of JP 2002006397A, the Takegawa refrence, translatated by the JPO on Aug. 23, 2006. http://www4.ipdl.ncipi.go.jp/cgi-bin/tm—web—cgi—ejje.

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