Projector

Details Projector Projector

2005-06-28

2005-06-28

Fuller, Rodney (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S020000, C353S034000, C353S081000, C353S084000, C349S009000, C359S487030, C359S490020, C359S490020, C359S256000, C359S634000, C348S339000

Reexamination Certificate

active

06910777

ABSTRACT:
To provide a compact projector in which a projection image is formed by using four kinds of color light so as to expand an expressible color gamut of the projection image and to achieve an excellent light utilization efficiency, a projector includes a light source, a color-separation optical system, a light-modulation optical system, and a color-synthesis optical system. The color-separation optical system produces four kinds of color light whose output directions are different from each other. The light-modulation optical system includes a first two-color-modulation electro-optical device to modulate any two of the four kinds of color light separated by the color-separation optical system and a second two-color-modulation electro-optical device to modulate the remaining two kinds of color light. Each two two-color-modulation electro-optical device includes a microlens array on a substrate close to the color-separation optical system and a plurality of sub-pixels corresponding to respective microlenses.

REFERENCES:
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Yamaguchi, “Multiprimary Color Displays”,Color Forum Japan '99, Kougaku Yon Gakkai (Four Optical Related Societies of Japan) , Nov. 1999, pp. 73-79 (w/English-language translation).

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