Ultrathin lighting element

G - Physics – 02 – B

Patent

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Details

G02B 6/00 (2006.01)

Patent

CA 2579217

An ultra thin lighting element including at least one light source (1b). A lightguide element (2c) includes one lightguide layer comprising a plurality of discrete fine optic surface relief structures (3e) on at least one portion of at least one surface. Each surface relief structure (3e) includes basic structural features on the order of about 10 microns or less in height, and on the order of about 10 microns or less in each lateral dimension. The number, arrangement and size of each surface relief structure (3e) and height and lateral dimensions of the structural features of the surface relief structures (3e) being varied to provide a desired degree of outcoupling modulation of light incoupled into the light guide element.

La présente invention concerne un élément lumineux ultramince comprenant au moins une source lumineuse. Un élément guide optique comprend une couche guide optique contenant plusieurs structures optiques superficielles fines et discrètes en relief sur au moins une partie d'au moins une surface. Chaque structure superficielle en relief comprend des caractéristiques structurelles de base de l'ordre d'environ 10 microns ou moins en hauteur, et d'environ 10 microns ou moins dans chaque dimension latérale. Le nombre, la disposition et la taille de chaque structure superficielle en relief ainsi que les dimensions latérales et en hauteur des caractéristiques structurelles de ces structures peuvent varier afin d'obtenir un degré souhaité de modulation du découplage de la lumière pénétrant dans l'élément guide optique.

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