Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1987-11-13
1989-05-02
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 61, 358230, 358231, 350401, 350173, H04N 931, H04N 574
Patent
active
048273341
ABSTRACT:
An optical system and method for image sampling in a video projection system is provided. A beam of illumination light is passed through a first beam-splitting polarizer to provide a first beam of a first polarization state and a second beam of a second polarization state. The first beam is passed through a second beam-splitting polarizer which is oriented at 90.degree. with respect to the first prism. The light from the second prism is then provided to a modulation device which produces a polarization modulated image in reflected outgoing light. The reflected outgoing light is passed through the second prism such that a first portion is directed to an image display screen and a second portion, which contains an image sample, is directed toward the first prism. The image sample is reflected by the first prism and provided to an image detector which detects characteristics of the sample. The detected characeristics are utilized to control the outgoing light.
REFERENCES:
patent: 3497283 (1970-06-01), Law
patent: 3894182 (1975-07-01), Yamamoto et al.
patent: 4191456 (1980-03-01), Hong et al.
patent: 4223354 (1980-09-01), Noble et al.
patent: 4464018 (1984-08-01), Gagnon
patent: 4586053 (1986-04-01), Hughes
patent: 4611245 (1986-09-01), Trias
patent: 4650286 (1987-03-01), Koda et al.
patent: 4682311 (1987-07-01), Matsubayashi et al.
patent: 4689780 (1987-08-01), Ohara et al.
patent: 4730899 (1988-03-01), Kime et al.
patent: 4749259 (1988-06-01), Ledebuhr
patent: 4769712 (1988-09-01), Polaert
A. Jacobson, "A New Color-TV Projector", Apr. 1977, SID 77 Digest, pp. 106-107.
Ledebuhr, "Full-Color Single-Projection-Lens Liquid-Crystal Light-Valve Projector", SID Digest of Technical papers, May 1986, pp. 379-382.
Gold and Ledebuhr, "Full Color Liquid Crystal Light Valve Projector", Proc. SPIE Int. Soc. Opt. Eng., vol. 526, 1985, pp. 51-58.
Jarrett Steven M.
Johnson Richard H.
Kykta Martin A.
Electrohome Limited
Faris E. Anne
Groody James J.
LandOfFree
Optical system and method for image sampling in a video projecti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical system and method for image sampling in a video projecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system and method for image sampling in a video projecti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-589211