Integrator module with a collimator and a compact light...

Details Integrator module with a collimator and a compact light... Integrator module with a collimator and a compact light...

2004-04-07

2009-06-09

Lee, Diane I (Department: 2851)

Optics: image projectors

Reflector

Plural

C353S020000, C353S094000, C362S026000, C362S019000, C362S582000, C313S112000, C385S132000, C385S146000

Reexamination Certificate

active

07543945

ABSTRACT:
A projection display includes three illumination units to emit red, green, and blue beams, at least one optical modulator to modulate the red, green, and blue beams to be suitable for image data, and projection optics to magnify and project the light beams emitted from the at least one optical modulator. Each of the illumination units includes: a collimator including a parabolic first reflective surface; a compact light source located at a focal point of the first reflective surface; a polarizer that transforms a light beam emitted from the collimator into a P- or S-polarized beam; and an integrator that transforms the light beam emitted from the polarizer to be emitted at a uniform intensity of light.

REFERENCES:
patent: 6318863 (2001-11-01), Tiao et al.
patent: 6948836 (2005-09-01), Ishida et al.
patent: 7040767 (2006-05-01), Lee et al.
patent: 7097334 (2006-08-01), Ishida et al.
patent: 2001042431 (2001-02-01), None

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