Asymmetric alternating prism arrays

Details Asymmetric alternating prism arrays Asymmetric alternating prism arrays

F - Mech Eng,Light,Heat,Weapons

21

V

F21V 8/00 (2006.01)

Patent

CA 2393260

A luminaire (8) is provided which includes a light source (14), a light guide (10) that receives light radiating from the light source (14), and a plurality of prisms (12) adjacent the light guide (10) that redirect the light guide (10) substantially perpendicular to a longitudinal axis of the light guide (10). The prism angles, in one embodiment, are 25~-90~-65~. The fine pitch prism arrays preferably alternate or flip-flop every few millimeters, for example, one to two millimeters to create the visual appearance of bright and dark bands which cause the structure to appear like macro prisms.

L'invention concerne un luminaire (8) comprenant une source lumineuse (14), un guide de lumière (14) recevant un rayonnement lumineux émanant de la source lumineuse (14), et une pluralité de prismes (12) adjacents au guide (10), réacheminant la lumière du guide (10) sensiblement perpendiculairement à un axe longitudinal de ce guide (10). Les angles des prismes sont, selon une forme d'exécution, de 25·-90·-65·. Les réseaux de prismes à pas fin alternent de préférence après quelques millimètres, par exemple, tous les uns à deux millimètres, en vue de fournir l'aspect visuel de bandes larges et sombres conférant à la structure un aspect semblable à des macroprismes.

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