Solid state light engine optical system

Details Solid state light engine optical system Solid state light engine optical system

2006-12-26

2006-12-26

Mahoney, Christopher (Department: 2851)

Optics: image projectors

Composite projected image

Reflector between lamp and screen

C353S098000, C362S297000

Reexamination Certificate

active

07152977

ABSTRACT:
An optical system for use in projection based displays includes a plurality of solid state light sources associated with a plurality of total internal reflection based compound hyperbolic emitters, a graduated dichroic filter based device for homogenizing light output from the plurality of solid state light sources, a ferro-electric liquid crystal on silicon device for illumination with light output from the array of solid state light sources, and a polarization diffuser for homogenization of light at the ferro-electric liquid crystal on silicon device, wherein the polarization diffuser is positioned at a point in space, in the optical system, where the size of a beam of light transmitted from the graduated dichroic filter based device is substantially at a maximum.

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