Optical screen for directing light beams with elements...

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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Details

F21V 5/00 (2006.01) G02B 5/02 (2006.01) G02B 27/00 (2006.01) G03B 21/62 (2006.01)

Patent

CA 2700423

The present invention relates to an optical screen for directing light beams comprising a substrate (11) having a first surface (13) particularly for the inlet of light beams (30) and a second surface (12) particularly for the emission of light beams (30). at least one of the surfaces (12, 13) of the substrate (11) being provided with a plurality of protuberances (14) which extend in a direction perpendicular to the substrate (11) and characterized in that the protuberances (14) consist of revolution solids around an axis (A) whose generatrix is defined by at least a first curvilinear section (16) with a concavity facing the inside of the protuberance (14).

La présente invention concerne un écran optique pour diriger des faisceaux lumineux, comportant un substrat (11) ayant une première surface (13) en particulier pour l'entrée de faisceaux lumineux (30) et une seconde surface (12)en particulier pour l'émission de faisceaux lumineux (30), au moins l'une des surfaces (12, 13) du substrat (11) comportant une pluralité de protubérances (14) qui s'étendent dans une direction perpendiculaire au substrat (11), et l'écran optique étant caractérisé par le fait que les protubérances (14) consistent en des solides de révolution autour d'un axe (A) dont la génératrice est définie par au moins une première section curviligne (16) avec une concavité tournée vers l'intérieur de la protubérance (14).

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