Color combining optical system and image projection apparatus

Details Color combining optical system and image projection apparatus Color combining optical system and image projection apparatus

2006-03-07

2006-03-07

Dowling, William C. (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S031000, C349S009000

Reexamination Certificate

active

07008059

ABSTRACT:
A color combining optical system is disclosed, with which light of a plurality of colors can be combined while reducing the loss of light due to fluctuations in the incidence angle on a polarization color combining film. The color combining optical system, which combines a first color light and a second color light, includes a polarization color combining film made of a multilayer film. The polarization color combining film combines a first polarization component of the first color light and a second polarization component of the second color light, which has a polarization direction substantially perpendicular to the first polarization component, with an efficiency of 90% or more in a predetermined incidence angle range.

REFERENCES:
patent: 5453859 (1995-09-01), Sannohe et al.
patent: 5579138 (1996-11-01), Sannohe et al.
patent: 5625491 (1997-04-01), von Gunten et al.
patent: 5967635 (1999-10-01), Tani et al.
patent: 5982541 (1999-11-01), Li et al.
patent: 6183091 (2001-02-01), Johnson et al.
patent: 6327093 (2001-12-01), Nakanishi et al.
patent: 6343864 (2002-02-01), Tajiri
patent: 6432854 (2002-08-01), Ueda et al.
patent: 6447120 (2002-09-01), Hansen et al.
patent: 6462873 (2002-10-01), Kwok et al.
patent: 6648474 (2003-11-01), Katsumata et al.
patent: 6678015 (2004-01-01), Yi et al.
patent: 6789902 (2004-09-01), Hayashi et al.
patent: 2001-154268 (2001-06-01), None
Li Li, et al.; “Novel Thin Film Polarizing Beam-splitter and Its Application in High Efficiency Projection Displays”,SPIE Conference on Projection Displays;vol. 3634, Jan. 1999, pp. 52-62.

Affiliated with

Also associated with

Rating

Color combining optical system and image projection 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 Color combining optical system and image projection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color combining optical system and image projection apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3589931