Television – Video display – Projection device
Patent
1995-05-22
1997-03-25
Lee, Michael
Television
Video display
Projection device
348203, 348756, 353 31, H04N 574, H04N 308
Patent
active
056149611
ABSTRACT:
Method and apparatus for a multi-application, laser-array-based image system utilizes three linear laser arrays. Each linear array generates multiple (N>1) parallel output beamlets at one of the three primary colors (red, green, blue). The corresponding 1 to N output beamlets of the three linear arrays, each individually modulated in luminance according to a specific encoding scheme representing the video image to be produced on the viewing screen, are combined spatially to form a single white light linear array source. Through a projection/scanner optical system, the N output beamlets of the white light source are simultaneously directed to, and swept horizontally across a distant viewing screen, resulting in a swath of N lines of a graphic video image. By producing M contiguous swaths vertically down the viewing screen, a full image of M.times.N lines is produced. The red, green, and blue linear laser arrays may consist of arrays of semiconductor laser diodes made of suitable semiconductor materials so as to directly emit radiation at wavelengths corresponding to red, green, and blue colors, respectively. Alternatively, the red, green and blue color arrays may be formed by arrays of semiconductor laser diodes emitting radiation at twice the desired red, green and blue wavelengths, whose radiation is coupled to arrays of second harmonic generation crystal elements.
REFERENCES:
patent: 4040096 (1977-08-01), Starkweather
patent: 4205348 (1980-05-01), DeBenedictis et al.
patent: 4263621 (1981-04-01), Berke
patent: 4274703 (1981-06-01), Fisli
patent: 4297723 (1981-10-01), Whitby
patent: 4342906 (1982-08-01), Hyatt
patent: 4345258 (1982-08-01), Tsai et al.
patent: 4393387 (1983-07-01), Kitamura
patent: 4474422 (1984-10-01), Kitamura
patent: 4475200 (1984-10-01), Lee
patent: 4650280 (1987-03-01), Sedlmayr
patent: 4689482 (1987-08-01), Horikawa et al.
patent: 4720747 (1988-01-01), Crowley
patent: 4796964 (1989-01-01), Connell et al.
patent: 4799777 (1989-01-01), Edouard et al.
patent: 4805974 (1989-02-01), Brueggemann et al.
patent: 4822151 (1989-04-01), Tatsuno et al.
patent: 4851918 (1989-07-01), Crowley
patent: 4870652 (1989-09-01), Thornton
patent: 4884857 (1989-12-01), Prakash et al.
patent: 4892371 (1990-01-01), Yamada et al.
patent: 4930849 (1990-06-01), Tanaka
patent: 4934773 (1990-06-01), Becker
patent: 4958098 (1990-09-01), Sarraf
patent: 4978202 (1990-12-01), Yang
patent: 4980700 (1990-12-01), Ng
patent: 5107363 (1992-04-01), Matsui et al.
patent: 5192946 (1993-03-01), Thompson et al.
patent: 5255082 (1993-10-01), Tamada
patent: 5424771 (1995-06-01), Yu
patent: 5534950 (1996-07-01), Hargis et al.
A very high resolution virtual display (Benjamin Wells) SPIE vol. 1664 High Resolution Displays and Projection Systems (1992), pp. 134-140 *.
Development of a multibeam recording head with Laser Diodes for Color Scanners (Yutaka Tamura) SPIE vol. 1254 Optical Hard Copy and Printing Systems (1990), pp. 68-73 *.
A study on laser scanning systems using a monolithic arrayed laser diode (Minoura, Suzuki, Miyazawa) SPIE vol. 1079 Hard Copy Output (1980), pp. 462-474 *.
High Resolution LED Printing Heads, (Takasu, Sakaguchi, Niina) SPSE--Advances in Non-Impact Printing Technologies, 1984, pp. 168-171 *.
Text and Image Printing With LED Arrays (Librecht), SPSE-Advances in Non-Impact Printing Technologies, 1984, pp. 170-173 *.
Properties of LED-Arrays for Electrophotographic Applications (Schairer) SPSE-Advances in Non-Impact Printing Technologies, 1984, pp. 173-174 *.
LED Uniformity Compensation (Segel & Warberg) SPSE-Advances in Non-Impact Printing Technologies, 1984, pp. 175-177 *.
180 mega-pixel per second optical image recording (Rosenheck), 378-III-10 reprinted with permission from Advances In Laser Scanning Technology, SPIE Proceedings vol. 299, pp. 9-13, Aug. 1981 *.
Non-Impact Printing Technologies (Haas), Imaging Processes and Materials, Chapter 13, pp. 375-405 *.
Generating Multi-Dimensional Scan Using A Single Rotating Component (Hildebrand) 378-III-13 reprinted with permission from Laser Scanning Components and Technologies, SPIE Proceedings vol. 84, pp. 85-90, Aug. 1976 *.
Applications of multi-beam acousto-optical modulators in laser-electrophographic printing and drawing machines (S. B.Tokes), pp. 10-15 *.
Multibeam Acoustooptic and Electrooptic Modulators (David L. Hecht), pp. 2-9 Xerox Corporation, Palo Alto, California *.
La Video A Laser, Innovation (French article with translation) *.
Patent Abstracts of Japan vol. 7, No. (P-238) 22 Nov. 1983 & JP, A, 58 145 914 (Canon K.K.) see abstract *.
Patent Abstracts of Japan vol. 9, No. 6 (P-326) 11 Jan. 1985 & JP, A, 59 155 826 (Hitachi Seisakusho K.K.) see abstract*.
Patent Abstracts of Japan vol. 8, No. 82 (P-268) 14 Apr. 1984 & JP, A, 58 224 325 (Fujitsu K.K.) see abstract *.
Arbeiter James H.
Bessler Roger F.
Gibeau Frank C.
Lee Michael
NITOR
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