Projection type display device

Details Projection type display device Projection type display device

2004-06-09

2008-05-20

Dowling, William C. (Department: 2851)

Optics: image projectors

Light shield, mask, hood, or diaphragm

C353S121000, C353S069000

Reexamination Certificate

active

07374290

ABSTRACT:
A projection-type display device includes a shielding unit and image signal correction units that divide the picture plane of the spatial light modulation element into a plurality of areas and perform correction on the image signal applied to the spatial light modulation element according to the current shielding amount of the shielding unit for each of the plurality of areas. Accordingly, appropriate uniformity correction is performed even when there is a change in the angular distribution of light emitted from the spatial light modulation element and reaching the screen.

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