Projection type image display apparatus

Details Projection type image display apparatus Projection type image display apparatus

2007-08-29

2010-12-14

Sohn, Seung C (Department: 2878)

Optics: image projectors

Temperature control

C353S057000

Reexamination Certificate

active

07850309

ABSTRACT:
Elements of an optical system (12) of a projection type image display apparatus are stored in an optical system storage (46) having an upper opening in such a way that the optical element to be arranged close to a light source is fitted in the frame provided in the high-temperature region of the optical system storage (46) close to the light source, while the rest of the optical elements are respectively fitted in the frames in the low-temperature region of the optical system storage (46) remote from the light source. The upper opening in the high-temperature region is covered, in the low-temperature region, with a resilient metal lid (471), and, in the low-temperature region, covered with a resilient resin lid (472). Portions of these lids are partially cut into spring-like narrow strips having tips configured to firmly and accurately hold the lenses fitted in the respective frames, whereby the dimensional tolerances of the optical elements and the frames can be absorbed solely by the lids without resorting to any other parts.

REFERENCES:
patent: 7052144 (2006-05-01), Nakamura
patent: 7147349 (2006-12-01), Kato et al.
patent: 7150543 (2006-12-01), Fujimori et al.
patent: 7607781 (2009-10-01), Yun et al.
patent: 2005/0002196 (2005-01-01), Nakamura et al.
patent: 63-271803 (1988-11-01), None
patent: 2002-350978 (2002-12-01), None
patent: 2003-287814 (2003-10-01), None
patent: 2005-026072 (2005-01-01), None
Chinese Office Action dated Nov. 20, 2009, issued in corresponding Chinese Patent Application No. 200710142262.1.
Japanese Office Action dated Sep. 9, 2008 (mailing date), issued in corresponding Japanese Patent Application No. 2006-236250.

Affiliated with

Also associated with

Rating

Projection type image display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection type image display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection type image display apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4172524