Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1996-11-18
1999-10-19
Spyrou, Cassandra
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 22, 349 5, 349 8, 349 95, 349108, 353 34, G02B 532
Patent
active
059698322
ABSTRACT:
A projection image display device includes, a light source, an image display panel having a number of pixels and a vertical scanning function, an optical system for dividing light from the light source into a plurality of lights of different wave ranges and directing and overlapping the divided plural lights onto an area from different directions, a light-collector for collecting each of the plural divided lights directed onto the area by the optical system into apertures of pixels of the image display panel corresponding to the wave range of the light, a projector for projecting an image displayed on the image display panel, and a color-changer for mutually changing, at every vertical scanning of the image display panel, the directions in which the optical system directs the plural divided lights of the different wave ranges, so as to mutually change the wave ranges of light directed to the pixels of the image display panel sequentially. The image display panel displays an image with each of the pixels displaying a color of the wave range of light directed to the pixel at every change by the color-changer.
REFERENCES:
patent: 5546206 (1996-08-01), Nakanishi et al.
patent: 5737040 (1998-04-01), Ichikawa et al.
Patent Abstracts of Japan of 4-60538, H. Hiroshi, in English.
Patent Abstracts of Japan of 5-249318, S. Hidefumi, in English.
Patent Abstracts of Japan of 6-222361, I. Nobuhiko, in English.
Shunsuke Kobayashi, "Color LIquid Crystal Display", pp. 115-123.
P. Janssen, Euro Display '93, "A novel single light valve high brightness HD color projector", pp. 249-252.
Adachi Masahiro
Makii Toshiyuki
Masuda Takeshi
Nagashima Nobuyoshi
Nakanishi Hiroshi
Conlin David G.
Pahl Henry D.
Schuberg Darren E.
Sharp Kabushiki Kaisha
Spyrou Cassandra
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