Laser projection system

Details Laser projection system Laser projection system

2006-09-05

2006-09-05

Kostak, Victor R. (Department: 2614)

Television

Video display

Projection device

C348S750000, C348S780000

Reexamination Certificate

active

07102700

ABSTRACT:
A laser projection system preferably for use in commercial motion picture theaters and other large screen venues, including home theater, uses optical fibers to project modulated laser beams for raster scanning on the screen. The emitting ends of the optical fibers are arranged in an array such that red, green and blue spots are simultaneously scanned onto the screen in multiple lines spaced one or more than one scan line apart. The use of optical fibers for laser beam projection eliminates the need to use complex optics, and enables the scanning of small, high resolution spots on the screen. The use of optical fiber also permits convenient packaging and permits replacement, upgrading or modification of the system components. The scanning of multiple lines simultaneously is accomplished by reordering the video signal with a microprocessor controller component to write lines in a sequence after repeated vertical sweeps to form a complete picture. In a preferred embodiment, the video signal is reordered to scan different color beams at different times to render the desired composite of the red, green and blue spots at each dot location on the screen. Alternate embodiments are disclosed to illustrate the flexibility of the system for different optical fiber output head spacings, and for different types of laser, modulation, and scanning components.

REFERENCES:
patent: 3507984 (1970-04-01), Stavis
patent: 3567847 (1971-03-01), Price
patent: 3569988 (1971-03-01), Schmidt et al.
patent: 3699242 (1972-10-01), Price
patent: 3760096 (1973-09-01), Roth
patent: 3818129 (1974-06-01), Yamamoto
patent: 3864730 (1975-02-01), Roth
patent: 3892468 (1975-07-01), Duguay
patent: RE29094 (1976-12-01), Price
patent: 4040096 (1977-08-01), Starkweather
patent: 4145712 (1979-03-01), Spooner et al.
patent: 4205348 (1980-05-01), DeBenedictus et al.
patent: 4297723 (1981-10-01), Whitby
patent: 4393387 (1983-07-01), Kitamura
patent: 4423426 (1983-12-01), Kitamura
patent: 4474422 (1984-10-01), Kitamura
patent: 4533215 (1985-08-01), Trias et al.
patent: 4613201 (1986-09-01), Shortle et al.
patent: 4689482 (1987-08-01), Horikawa et al.
patent: 4720747 (1988-01-01), Crowley
patent: 4796964 (1989-01-01), Connell et al.
patent: 4805012 (1989-02-01), Agostinelli et al.
patent: 4833528 (1989-05-01), Kobayashi
patent: 4835601 (1989-05-01), Kobayashi
patent: 4851918 (1989-07-01), Crowley
patent: 4871231 (1989-10-01), Garcia, Jr.
patent: 4884857 (1989-12-01), Prakash et al.
patent: 4892371 (1990-01-01), Yamada et al.
patent: 4930849 (1990-06-01), Tanaka
patent: 4931874 (1990-06-01), Grillon et al.
patent: 4978202 (1990-12-01), Yang
patent: 4979030 (1990-12-01), Murata
patent: 4992880 (1991-02-01), Trias
patent: 5015064 (1991-05-01), Detig et al.
patent: 5029975 (1991-07-01), Pease
patent: 5032924 (1991-07-01), Brown et al.
patent: 5051834 (1991-09-01), Matui et al.
patent: 5097480 (1992-03-01), Pease
patent: 5136426 (1992-08-01), Linden et al.
patent: 5136674 (1992-08-01), Kakiuchi et al.
patent: 5140427 (1992-08-01), Nakane et al.
patent: 5148285 (1992-09-01), Nakane et al.
patent: 5166778 (1992-11-01), Beamon, III
patent: 5255082 (1993-10-01), Tamada
patent: 5311321 (1994-05-01), Crowley
patent: 5317348 (1994-05-01), Knize
patent: 5410371 (1995-04-01), Lambert
patent: 5418546 (1995-05-01), Nakagakiuchi et al.
patent: 5424771 (1995-06-01), Yu
patent: 5440352 (1995-08-01), Deter et al.
patent: 5463468 (1995-10-01), Takanashi et al.
patent: 5534950 (1996-07-01), Hargis et al.
patent: 5577148 (1996-11-01), Kamatani
patent: 5596339 (1997-01-01), Furness, III et al.
patent: 5614961 (1997-03-01), Gibeau et al.
patent: 5708747 (1998-01-01), Danckwerth
patent: 5715021 (1998-02-01), Gibeau et al.
patent: 5715337 (1998-02-01), Spitzer et al.
patent: 5774174 (1998-06-01), Hardie
patent: 5818546 (1998-10-01), Opower et al.
patent: 5822022 (1998-10-01), Deter et al.
patent: 5828424 (1998-10-01), Wallenstein
patent: 5874929 (1999-02-01), Opower et al.
patent: 5920361 (1999-07-01), Gibeau et al.
patent: 6137461 (2000-10-01), Deter et al.
patent: 6154259 (2000-11-01), Hargis et al.
patent: 6175440 (2001-01-01), Conemac
patent: WO 94/18802 (1994-08-01), None
patent: WO 98/035504 (1998-08-01), None
patent: WO 02/021850 (2002-03-01), None
“An Overview of Technology for Large Wall Screen Projection using Lasers as a Light Source”, Richard W. Pease, MITRE Technical Report, The Mitre Corporation (Jul. 1990).
“Electro-Optic and Acousto-Optic Scanning and Deflection”, Milton Gottlieb, Clive L. M. Ireland, John Martin Ley, Marcel Dekker, Inc., pp. 2-97; 159-175 (1983).
“Television Engineering Handbook”, K. Blair Benson (ed.), McGraw-Hill Book Company, 1986, pp. 2.14-2.26.
“Useful Optics”, Walter T. Welford, University of Chicago Press, 1991, Ch. 7, pp. 44-57.
“Provisional Instruction Manual, Model SD 270, Video Projector”, Dwight Cavendish Displays, Ltd., 1985.
“Millenia—A New Class of High-Power Diode-PUmped CW Visible Lasers”, LaserForefront, Spectra-Physics Lasers, Inc., 1996, No. 6.
“Silica Single Mode Fibers”, 2000 Catalog, Thor Labs Inc., 2000, p. 242.

Affiliated with

Also associated with

Rating

Laser projection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser projection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser projection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3586945