Optical coupling arrangement between a lamp and a light guide

Details Optical coupling arrangement between a lamp and a light guide Optical coupling arrangement between a lamp and a light guide

1993-09-02

1996-10-01

Gromada, Denise L.

Illumination

Revolving

362298, 362346, F21V 800, F21V 708

Patent

active

055606997

ABSTRACT:
A central lighting system for providing light to locations remote from the light source includes first and second ellipsoidally shaped reflector members joined so as to substantially surround the light source. The reflector members collect the light output and focus it onto an input face of either a light guide or a non-imaging optical coupling member. If the optical coupling member is utilized, an angle to area conversion occurs so as to allow light introduced at high angles to an input face of the optical coupler to exit the optical coupler at a smaller angle. The reflector members can also be configured so that respective second optical focal points can reside at the apex of the opposing reflector member thereby allowing for a coupling efficiency of approximately 70% or greater.

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patent: 5321586 (1994-06-01), Hege et al.

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