Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2006-08-31
2008-03-25
Koval, Melissa Jan (Department: 2862)
Optics: image projectors
Polarizer or interference filter
C353S031000, C353S033000, C353S034000, C353S037000, C353S081000, C349S009000
Reexamination Certificate
active
07347559
ABSTRACT:
Methods and apparatuses for use in image projecting are provided. One apparatus includes a transflective polarizing beam splitter, a plurality of reflective liquid crystal light valves, and a spectrally selective output device. The beam splitter is capable of receiving the wavelength bands of light and transmitting at least one wavelength band of light having a first polarization direction, and reflecting other wavelength bands of light having a second polarization direction. The light valves are capable of selectively reflecting at least portions of respective wavelength bands of lights. The spectrally selective output device is capable of receiving at least one of the portions of the wavelength band of light and changing the polarization of the portion of the first wavelength of light.
REFERENCES:
patent: 5530489 (1996-06-01), Henderson et al.
patent: 5577826 (1996-11-01), Kasama et al.
patent: 5777789 (1998-07-01), Chiu et al.
patent: 6010221 (2000-01-01), Maki et al.
patent: 6113239 (2000-09-01), Sampsell et al.
patent: 6190013 (2001-02-01), Tani et al.
patent: 6247814 (2001-06-01), Lin
patent: 6661475 (2003-12-01), Stahl et al.
patent: 6803972 (2004-10-01), Budd et al.
patent: 7072003 (2006-07-01), Stahl et al.
“High Brightness Color Liquid Crystal Display Projector”, IBM Technical Disclosure Bulletin, vol. 40, No. 12, Dec. 1997, pp. 165-167.
Bone et al., “Novel Optical System Design for Reflective CMOS Technology”, SPIE Conference on Projection Displays V, Jan. 1999, vol. 3634, pp. 80-86.
Gohman Jeffrey A.
Stahl Kurt
Perkins Coie LLP
Straight Signals LLC
LandOfFree
Color video projection system employing reflective liquid... 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 video projection system employing reflective liquid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color video projection system employing reflective liquid... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3977193