G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 1/04 (2006.01) B29D 11/00 (2006.01) F21V 8/00 (2006.01) G02B 6/10 (2006.01) G02F 1/1335 (2006.01)
Patent
CA 2484684
The invention relates to a light-guiding body comprising at least one light- admitting surface, at least one light-emitting surface, the proportion between the light-emitting surface and the light-admitting surface being at least 4, and at least one light-guiding layer. The inventive light-guiding body is characterized by the fact that the light-guiding layer is provided with at least 60 percent by weight of polymethylmethacrylate and 0.0001 to 0.2 percent by weight of spherical particles having an average diameter ranging from 0.3 to 40 m, the percentages by weight being in relation to the total weight of the light-guiding layer, while the light-emitting surface of the light-guiding layer is provided with structures.
La présente invention concerne un élément de guidage de lumière comprenant au moins une face d'introduction de lumière et au moins une face de sortie de lumière, le rapport entre la face de sortie de lumière et la face d'introduction de lumière étant égal au moins à 4. Cet élément comprend au moins une couche de guidage de lumière. L'invention se caractérise en ce que cette couche de guidage de lumière comprend, par rapport au poids total de ladite couche, au moins 60 % en poids de polyméthylméthacrylate et 0,0001 à 0,2 % en poids de particules sphériques présentant un diamètre moyen compris entre 0,3 et 40 mu m et en ce que la face de sortie de lumière de la couche de guidage de lumière est structurée.
Groothues Herbert
Ittmann Guenther
Parusel Markus
Schmidt Jann
Norton Rose Or S.e.n.c.r.l.,s.r.l./llp
Roehm Gmbh & Co. Kg.
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