Projection type display, a display and a drive method thereof

Details Projection type display, a display and a drive method thereof Projection type display, a display and a drive method thereof

2006-11-14

2006-11-14

Liang, Regina (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S032000, C348S751000, C353S031000

Reexamination Certificate

active

07136035

ABSTRACT:
A projection type display is provided that can change a quantity of light emitted to a light modulation device without changing the intensity of light emission from a lamp and exhibits superiority in an image expression and adaptability to an operational environment. This includes an illumination device, a liquid crystal light valve modulating light emitted from the illumination device and a projection lens projecting light modulated by the liquid crystal light valve. This illumination device is provided with a light source and a fly-eye lens, making illumination distribution of light incident from the light source uniform and a liquid crystal element for light adjustment, which is disposed on an optical axis of light emitted from the light source and adjusts a quantity of light emitted from the light source. Hence, a quantity of light per unit time emitted from the illumination device is adjustable by driving a liquid crystal element for light adjustment with the time-sharing based on information from outside.

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