Image projection apparatus

Details Image projection apparatus Image projection apparatus

2007-04-24

2007-04-24

Perkey, W B (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S033000, C353S034000, C353S037000, C353S081000, C353S082000, C349S008000, C349S009000, C359S490020, C359S638000, C359S640000, C348S757000

Reexamination Certificate

active

10935409

ABSTRACT:
A reflection type projector apparatus uses polarized beam filters that are resistant to fluctuations in incident angle as the light beam splitting elements and in which are provided for the blue color beam a blue color use liquid crystal reflection panel, a polarized beam filter, a linear polarization plate, and a ½ wavelength plate arranged at one side face of a cross prism, with a blue color beam emitted toward the blue color use liquid crystal reflection panel. The blue color beam passes through the polarized beam filter, striking the blue color use liquid crystal reflection panel, and is modulated when reflected. The blue color modulated beam is reflected toward the cross prism at the polarized beam filter, and then passes through the linear polarization plate and the ½ wavelength plate, strikes the cross prism, and is projected to the screen by a projection lens.

REFERENCES:
patent: 6416184 (2002-07-01), Arai et al.
patent: 6893131 (2005-05-01), Imahase et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3793187