Illuminating optical device in image display device and...

Details Illuminating optical device in image display device and... Illuminating optical device in image display device and...

2003-07-02

2008-10-07

Chang, Audrey Y (Department: 2872)

Optical: systems and elements

Light interference

C359S618000, C359S237000

Reexamination Certificate

active

07433126

ABSTRACT:
Speckle noise is reduced to increase image quality in an image display apparatus such as a projection display or the like.An illuminating optical device in an image display apparatus (1) applies a laser beam L to a GLV (spatial modulator) (6) and modulates the laser beam based on an image signal input to the GLV to display an image. A plurality of laser beams (1, 1,. . . ) each having an optical path difference greater than the coherence length of the laser beam are applied to the GLV.

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