Optical: systems and elements – Light interference – Produced by coating or lamina
Patent
1991-02-27
1992-08-04
Fields, Carolyn E.
Optical: systems and elements
Light interference
Produced by coating or lamina
359204, 359589, 358 60, G02B 2610
Patent
active
051364263
ABSTRACT:
A high efficiency light projection apparatus using lasers that optimize all available power output from two lasers to provide a balanced color display is disclosed. The light projection apparatus comprises two laser and light separation means to produce separate red, green and blue light beam components. A combiner cube is provided for combining the blue light beam component of one of the lasers with the blue light beam component of the other laser. Also provided is a second combiner cube for combining a portion of one of the lasers green light beam component with the other lasers green light beam component which combined components are transmitted to a dye laser to provide a red light beam component.
Additionally, a light projection apparatus is disclosed that provides convenient access by the operator and presents an overall narrower configuration for the projector for transportation, installation and alignment purposes.
REFERENCES:
patent: 3507984 (1970-04-01), Stavis
patent: 3524011 (1970-08-01), Korpel
patent: 3539245 (1970-11-01), Brienza
patent: 3549800 (1970-12-01), Baker
patent: 3637929 (1972-01-01), Kaminow
patent: 3647956 (1972-03-01), Buck et al.
patent: 3691482 (1972-09-01), Pinnow et al.
patent: 3818129 (1974-06-01), Yamamoto
patent: 3891560 (1975-06-01), Chester
patent: 4145712 (1979-03-01), Spooner et al.
patent: 4219843 (1980-08-01), Takahashi
patent: 4295159 (1981-10-01), Carollo et al.
patent: 4297723 (1981-10-01), Whitby
patent: 4562461 (1985-12-01), Yin
patent: 4611245 (1986-09-01), Trias
patent: 4613201 (1986-09-01), Shortle et al.
patent: 4668977 (1987-05-01), Ohno et al.
patent: 4851918 (1989-07-01), Crowley
patent: 4978202 (1990-12-01), Yang
patent: 4979030 (1990-12-01), Murata
patent: 5010397 (1991-04-01), Hasegawa
Funkschau, Farbfernseh--Gross projektion MIT Laser, 1970 (No translation is available).
Baker, Charles E., Laser Display Technology, Dec. 1968, pp. 39-50.
Pease, Richard W., An Overview of Technology for Large Wall Screen Projection Using Lasers as a Light Source, Jul. 1990, pp. 1-13 & FIG. 3.
Rocky Mountain Instrument Co., .lambda./4, .lambda./2, Crystal Quartz 87-6-015.
Rocky Mountain Instrument Co., Dichroic Filters 87-06-029.
Rocky Mountain Instrument Co., Polarizing Beamsplitter Cubes, BK-7A, 87-6-041.
Rocky Mountain Instrument Co., High Power Laser Polarizers BK-7A, 87-6-042.
European Patent Application No. 83300157 to Dwight Cavendish Holdings Limited relating to abovementioned U.S. Pat. No. 4,613,201 though specifications are not identical.
Linden Paul A.
Pease Richard W.
Advanced Laser Projection, Inc.
Dunn Drew A.
Fields Carolyn E.
LandOfFree
Light 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 Light projection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light projection apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-783080