Projection display apparatus

Details Projection display apparatus Projection display apparatus

2007-09-25

2007-09-25

Sever, Andrew T (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S069000, C349S009000, C348S745000

Reexamination Certificate

active

11116420

ABSTRACT:
A white light emitted from a light source is homogenized by an integrator optical system, transmitted through a color polarizer (113) to be turned into an R light and a G light of a P polarized light, and transmitted through a color polarizer (118) to be turned into a G light of an S polarized light and an R light of a P polarized light. These R light and G light are subjected to light modulation in a reflection type spatial light modulation element for G and a reflection type spatial light modulation element for R arranged at unequal distances from a polarization split surface of a polarizing beam splitter (103), and emitted from a projection lens having an axial chromatic aberration corresponding to the unequal distances.

REFERENCES:
patent: 6678015 (2004-01-01), Yi et al.
patent: 7036942 (2006-05-01), Ogawa
patent: 7185989 (2007-03-01), Fujita et al.
patent: 2001/0000971 (2001-05-01), Johnson et al.
patent: 2005/0174495 (2005-08-01), Itoh et al.
patent: 2006/0238665 (2006-10-01), Stahl et al.
patent: 2001-174755 (2001-06-01), None

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