Light guide with protective outer sleeve

G - Physics – 02 – B


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G02B 6/10 (2006.01) F21V 8/00 (2006.01) G02B 5/04 (2006.01)


CA 2401919

An illumination device including a light guide (22) surrounded by a protective sleeve (24). The light guide (22) is hollow and includes a cylindrical wall (26) having a structured outer surface (28) and a smooth inner surface (30). Light release structures are provided to reflect or refract light through the cylindrical wall (26) of the light guide (22). In certain embodiments, the protective sleeve is bonded to the light guide. Rigid fixtures can be used to retain the light guide in elastically deformed, non-cylindrical cross- sectional shapes.

L'invention concerne un dispositif d'éclairage comprenant un guide de lumière (22) entouré par un manchon protecteur (24). Le guide de lumière (22) est creux et comprend une paroi cylindrique (26) présentant une surface extérieure structurée (28) et une surface intérieure lisse (30). Les structures à libération servent à réfléchir ou réfracter la lumière à travers un paroi cylindrique (26) du guide de lumière (22). Dans certains mode de réalisation de l'invention, le manchon protecteur est lié au guide de lumière. Des agencements rigides sont utilisés afin de conserver le guide de lumière sous des formes transversales non cylindriques, déformées de manière élastique.


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