Optics: image projectors – Composite projected image – Multicolor picture
Patent
1991-05-15
1993-08-24
Cuchlinski, Jr., William A.
Optics: image projectors
Composite projected image
Multicolor picture
353 30, 353 33, 353 81, 359 40, 359 63, G02F 113, G03B 2100
Patent
active
052393224
ABSTRACT:
There is provided an apparatus for displaying an image on a screen by projecting a reading light from a light source onto a spatial light modulator of reflective type in which the image is written, and projecting a reflected light from the modulator corresponding to the image onto the screen through a projection lens, the modulator, lens and screen being provided so that their optical axes are in agreement on one optical path. The apparatus comprises an optical device provided between the lens and screen for the reading light toward the modulator and passing the reflected light to the screen and a converging element for converging the reading light on the position which is on the optical axis of the lens and located between the lens and screen so that the reading light thus turned becomes a parallel pencil beam which is projected onto the modulator in parallel with the optical axis.
REFERENCES:
patent: 4384769 (1983-05-01), Brei et al.
patent: 4389096 (1983-06-01), Hori et al.
patent: 4707077 (1987-11-01), Marom
patent: 4818983 (1989-04-01), Hara et al.
patent: 5009490 (1991-04-01), Kouno et al.
patent: 5083854 (1992-01-01), Zampolin et al.
Maeno Keiichi
Nakagaki Shintaro
Negishi Ichiro
Suzuki Tetsuji
Takahashi Ryusaku
Cuchlinski Jr. William A.
Dowling William C.
Meller Michael N.
Victor Company of Japan Ltd.
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