Television – Video display – Projection device
Patent
1995-11-30
1998-09-29
Lee, Michael
Television
Video display
Projection device
348750, H04N 931
Patent
active
058152210
ABSTRACT:
A polarizing beam splitter extracts orthogonally polarized light beams from natural light and distributes those to liquid crystal panels, which modulate polarization states of those polarized light beams in accordance with a luminance signal and chrominance signals of video signals, respectively. The modulated light beams are combined by the same polarizing beam splitter, and the combined light is enlarged and projected onto a screen by a projection lens, to reproduce a projected image.
REFERENCES:
patent: 3588324 (1971-06-01), Marle
patent: 5028121 (1991-07-01), Baur et al.
patent: 5534949 (1996-07-01), Baron
patent: 5629743 (1997-05-01), Lee et al.
patent: 5642125 (1997-06-01), Silverstein
patent: 5663775 (1997-09-01), Kawamura et al.
"A Polarization-Transforming Optics for a High-Luminance LCD Projector", Shinsuke Shikama et al., Jun. 24, 1992.
"Light-Valve Technologies for High-Definition Television Projection Displays", R. Gerhard-Multhaupt, 1991.
Itoh Fumio
Kojima Masanori
Miyamoto Teruo
Myoi Yasuhito
Nishino Ko
Lee Michael
Mitsubishi Denki & Kabushiki Kaisha
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