Light coupling system and method

Details Light coupling system and method Light coupling system and method

2005-09-06

2008-10-14

Lee, Diane I. (Department: 2851)

Optics: image projectors

Lamp control

C353S031000, C362S612000, C362S555000, C345S082000, C385S010000, C385S009000, C385S028000, C385S032000, C385S039000

Reexamination Certificate

active

07434940

ABSTRACT:
A light coupling system includes a waveguide, configured to receive light from at least two light sources and to internally reflect light therein; a diffraction grating, disposed upon the waveguide; and a switchable Bragg grating, disposed upon the waveguide. The diffraction grating is configured to couple light from at least one of the light sources into the waveguide, and the switchable Bragg grating is configured to selectively couple light out of the waveguide, such that the light from the at least two light sources is selectively directed along a common projection axis.

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