Optical projection apparatus and projection-type image...

Optics: image projectors – Color filter

Reexamination Certificate

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Details

C348S743000, C353S031000

Reexamination Certificate

active

11003596

ABSTRACT:
A projection-type image displaying apparatus includes: a first color wheel for splitting a light ray from a light source into colored light rays according to color transmission characteristics by the wheel being rotated; a second color wheel for further splitting the colored light rays from the first color wheel by the wheel being rotated; a reflection display device for reflecting, while modulating or switching the light rays transmitted through the second color wheel in synchronization with image signals from an image signal inputting unit, and varying phase of the color wheels in accordance with the changing picture quality; and a reflection drive control unit for controlling the driving of the reflection display device.

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