Color display apparatus using one panel diffractive-type...

Details Color display apparatus using one panel diffractive-type... Color display apparatus using one panel diffractive-type...

2007-07-24

2007-07-24

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Diffraction

From grating

C359S569000, C359S572000, C359S573000, C359S292000

Reexamination Certificate

active

11352743

ABSTRACT:
Disclosed herein is a color display apparatus using a one-panel diffractive-type optical modulator. The color display apparatus includes a plurality of light sources, an illumination lens system, a diffractive-type optical modulator, a filter system, and a projection system. The light sources simultaneously emit the light beams of corresponding wavelengths. The illumination lens system allows respective light beams to be converted into linear parallel light. The diffractive-type optical modulator forms diffractive light by diffracting incident light when the locations of at least two neighboring reflection parts vary to a predetermined distance by an actuating means. The filter system allows diffractive light having a desired diffractive order for respective wavelengths to pass therethrough when diffractive light having a plurality of diffractive orders for the respective wavelengths enters from the diffractive-type optical modulator. The projection system generates an image on a target object by scanning diffractive light filtered by the filter system on the target object.

REFERENCES:
patent: 5986740 (1999-11-01), Robinson et al.
patent: 6373549 (2002-04-01), Tombling et al.
patent: 7133184 (2006-11-01), Shin et al.
patent: 7149028 (2006-12-01), Yun

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