Projection apparatus and light integration rod thereof

Details Projection apparatus and light integration rod thereof Projection apparatus and light integration rod thereof

2007-10-17

2010-12-14

Sohn, Seung C (Department: 2878)

Optics: image projectors

Reflector

Plural

C353S084000, C362S026000, C362S551000

Reexamination Certificate

active

07850315

ABSTRACT:
A light integration rod having a light input end and a light output end opposite to each other is provided. The light integration rod includes a first reflective plate, a second reflective plate, a third reflective plate and a fourth reflective plate. The second reflective plate is opposite to the first reflective plate. The third reflective plate and the fourth reflective plate connect the first reflective plate and the second reflective plate, and are disposed opposite to each other. A long side of the first reflective plate is not equal to a long side of the second reflective plate. A short side at the light output end of at least one of the first reflective plate and the second reflective plate is separate from a short side of the third reflective plate and a short side of the fourth reflective plate at the light output end.

REFERENCES:
patent: 5625738 (1997-04-01), Magarill
patent: 6857752 (2005-02-01), Eckhardt
patent: 6915063 (2005-07-01), Kawaai et al.
patent: 7020379 (2006-03-01), Lee
patent: 7287863 (2007-10-01), Liang et al.
patent: WO2006009399 (2006-01-01), None

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