Loss-less etendue-preserving light guides

Details Loss-less etendue-preserving light guides Loss-less etendue-preserving light guides

2006-02-28

2006-02-28

Connelly-Cushwa, Michelle (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S011000, C385S032000

Reexamination Certificate

active

07006735

ABSTRACT:
A light guide comprises two or more straight light guide sections and one or more light coupling elements between sections to transport light from one section to another section. By having at least two TIR (totally internally reflecting) surfaces aligned with the light guiding direction of one of the light guiding sections, a light coupling element of the invention transports light from one light guide section to another with little or no light loss and little or no increase of etendue.

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Melles Griot, “The Practical Application of Light”, 1999, Melles Griot, p. 10.2.

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