G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/00 (2006.01) B60K 35/00 (2006.01) F21V 8/00 (2006.01) G01D 11/28 (2006.01) G12B 11/00 (2006.01)
Patent
CA 2403887
An optical light guide member according to the present invention includes a tubular portion in which an annular light incident end surface for entering light is formed on a one end thereof, a funnel-shaped expanded section having a one end side thereof continuously extending to the other end of the tubular portion, a flat section which has on a front side thereof a light exit surface extending along a flat plane intersecting an axis of the tubular portion, and which extends continuously to the other end side of the funnel-shaped expanded section, and a plurality of light deflection elements formed at least on the back side of the flat section each for altering the traveling direction of the light. An incident light on the tubular portion from the light incident end surface is emitted with a uniform intensity distribution from the light exit end surface.
Leiz Advanced Technology Corporation
Mccarthy Tetrault Llp
Nippon Leiz Corporation
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