Projection type image display device

Details Projection type image display device Projection type image display device

2005-12-13

2005-12-13

Lao, Lun-Yi (Department: 2677)

Computer graphics processing and selective visual display system

Display driving control circuitry

Intensity or color driving control

C348S745000, C353S034000, C349S005000

Reexamination Certificate

active

06975337

ABSTRACT:
A projection type image display device includes a plurality of image display elements that perform modulation of light rays in accordance with an image signal, a color synthesizing optical element for synthesizing light rays having mutually different wavelength ranges that have been modulated by these image display elements by use of a dichroic membrane, lens groups having a positive refractive power as a whole that are disposed between the image display element and the color synthesizing optical element, and a projection optical system for projecting an image synthesized by the color synthesizing optical element. The projection type image display device further includes a storage circuit for storing data used to correct the brightness irregularity of a projected image, and a brightness irregularity correcting circuit for correcting brightness irregularity of a projected image on the basis of the data stored in the storage circuit.

REFERENCES:
patent: 4219843 (1980-08-01), Takahashi
patent: 5260797 (1993-11-01), Muraji et al.
patent: 6043797 (2000-03-01), Clifton et al.
patent: 6288756 (2001-09-01), Shiota et al.
patent: 6309073 (2001-10-01), Nakayama et al.
patent: 6456340 (2002-09-01), Margulis
patent: 6462735 (2002-10-01), Naito
patent: 6558001 (2003-05-01), Ogawa et al.
patent: 6601957 (2003-08-01), Sugawara
patent: 6626540 (2003-09-01), Ouchi et al.
patent: 6644812 (2003-11-01), Kodama et al.
patent: 6674415 (2004-01-01), Nakamura et al.
patent: 1185111 (2002-03-01), None
patent: 08242427 (1996-09-01), None
patent: 2002108298 (2002-04-01), None

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