Television – Video display – Projection device
Patent
1995-04-27
1997-09-02
Lee, Michael H.
Television
Video display
Projection device
348750, H04N 574, H04N 931
Patent
active
056637756
ABSTRACT:
In a video projector, first and second light sources respectively emit first and second collimated, white light beam, a luminance optical modulation means modulates the first light beam in accordance with a luminance signal of an input video signal, a chrominance optical modulation means modulates the second light beam in accordance with a chrominance signal of the input video signal, a first projecting means projects the first light beam having been modulated by the luminance optical modulation means onto a projection screen to form a projected luminance image on the screen, and a second projecting means projects the second light beam having been modulated by the chrominance optical modulation means onto the projection screen to form a projected chrominance image on the screen. The projected luminance image and the projected chrominance image are superimposed with each other on the screen to form a full color image.
REFERENCES:
patent: 4833528 (1989-05-01), Kobayashi
patent: 4868668 (1989-09-01), Tavernetti
patent: 5153752 (1992-10-01), Kuramatsu et al.
patent: 5237399 (1993-08-01), Inada et al.
patent: 5325473 (1994-06-01), Monroe et al.
patent: 5404234 (1995-04-01), Taniguchi et al.
Kawamura Hiroshi
Koizumi Hisao
Ohtsuru Yoshisuke
Lee Michael H.
Mitsubishi Denki & Kabushiki Kaisha
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