Projection type image display apparatus using reflective...

Details Projection type image display apparatus using reflective... Projection type image display apparatus using reflective...

2007-07-24

2007-07-24

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S031000, C353S034000, C353S037000, C353S098000, C353S099000, C349S009000

Reexamination Certificate

active

11490256

ABSTRACT:
A compact, light projection type image display apparatus based on reflection image display devices which provide high brightness without contrast deterioration caused by light leakage associated with black image display. The apparatus uses, as polarizers/analyzers for reflection image display devices, reflection polarizing plates which function as polarizing plates by their grating function only in a specific direction. In each light path, the reflection polarizing plate is located just before/after the reflection image display device.

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ProFlux “Optically Flat Polarizing Beamsplitters”, Catalog No. PBF02A, May 2002; 2 pgs.

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