Reflective illuminating optical system

Details Reflective illuminating optical system Reflective illuminating optical system

2007-02-06

2007-02-06

Mahoney, Christopher (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S031000, C353S081000

Reexamination Certificate

active

10816998

ABSTRACT:
A reflective illuminating optical system on silicon, more particularly, to an illuminating optical system is provided, in which R, G, and B signals reflected from a LCoS panel (Liquid Crystal on Silicon panel) in a projection system do not pass through wire grid type PBSs (Polarized Beam Splitters) but are reflected by the wire grid type PBSs (Polarized Beam Splitters) so that astigmatism is suppressed and illuminating efficiency is improved.

REFERENCES:
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Arnold et al., “An Improved Polarizing Beamsplitter LCOS Projection Display Based on Wire—Grid Polarizers,” SID 01 Digest, 1282-1285 (2001).

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