Patent Number: 7,131,736

Title: Efficient illumination systems for reduced etendue color video projection systems

Abstract: An illumination system is provided with at least a first reflecting device that has a first focal point at the arc of an arc lamp. The second focal point of the reflecting device is located at the input end of a compound parabolic concentrator (CPC). The CPC is optically coupled with an optical integrator. Light exiting the optical integrator may be used in low etendue projection systems.

Inventors: Bierhuizen; Serge J. A. (Santa Rosa, CA)


International Classification: G03B 21/28 (20060101); F21V 7/04 (20060101); F21V 7/09 (20060101); G02F 1/13357 (20060101)

Expiration Date: 2019-11-07 0:00:00