Illumination apparatus and liquid crystal projector using...

Details Illumination apparatus and liquid crystal projector using... Illumination apparatus and liquid crystal projector using...

2006-07-18

2006-07-18

Alavi, Ali (Department: 2875)

Illumination

Light source and modifier

Including reflector

C362S296040

Reexamination Certificate

active

07077546

ABSTRACT:
An illumination apparatus includes a reflector including a parabolic or ellipsoidal mirror, a light source arranged near a (first) focal point of the reflector, and a front mirror having a transparent window and a mirror surface symmetrical about the light axis. Luminous flux emitted from the light source is reflected from the reflector. In the case of the parabolic mirror, the front mirror has the same size as an entrance of an output light utilizing optical system, and the luminous flux exits toward the optical system as collimated light. In the case of the ellipsoidal mirror, the front mirror is arranged between two focal points of the ellipsoidal mirror, and the luminous flux is directed toward the second focal point. However, at least one part of the luminous flux is reflected from the front mirror and returned toward the first focal point.

REFERENCES:
patent: 3676667 (1972-07-01), Malifaud
patent: 4735495 (1988-04-01), Henkes
patent: 5142387 (1992-08-01), Shikama et al.
patent: 5151584 (1992-09-01), Ebbing et al.
patent: 5833341 (1998-11-01), Kimura et al.
patent: 6227682 (2001-05-01), Li
patent: 6497488 (2002-12-01), Yamauchi et al.
patent: 2003/0031031 (2003-02-01), Tiao et al.
patent: 03111806 (1991-05-01), None
patent: 05264904 (1993-01-01), None
patent: 10161065 (1998-06-01), None
patent: 20011066697 (2001-03-01), None

Affiliated with

Also associated with

Rating

Illumination apparatus and liquid crystal projector using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Illumination apparatus and liquid crystal projector using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illumination apparatus and liquid crystal projector using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3535848