Projection-type display device

Details Projection-type display device Projection-type display device

1989-10-19

1991-12-17

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

358 61, 353 31, 353 34, 359 40, 359634, 359490, G02F 113, G02B 2728

Patent

active

050730134

ABSTRACT:
A projection-type display device having a single light source which produces light. A first dichroic mirror group receives the light and separates it into colored light. A transmissive light valve system modulates the colored light and a second dichoric mirror group synthesizes the modulated colored light. A projection system projects the synthesized colored light onto a screen.

REFERENCES:
patent: 2642487 (1953-06-01), Schroeder
patent: 3840695 (1974-10-01), Fischer
patent: 3876287 (1975-04-01), Sprokel
patent: 3910680 (1975-10-01), Kakeda
patent: 4191456 (1980-03-01), Hong et al.
patent: 4425028 (1984-01-01), Gagnon et al.
patent: 4461542 (1984-07-01), Gagnon
patent: 4544237 (1985-10-01), Gagnon
patent: 4650286 (1987-03-01), Koda et al.
patent: 4715684 (1987-12-01), Gagnon
patent: 4836649 (1989-06-01), Ledebuhr et al.
Morozumi et al., B/W and Color LC Video Displays addressed by Poly Si TFT's "Society for Informational Display", pp. 24-27, 1975.

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