Optical system and method for managing brightness contrasts...

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

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F21V 8/00 (2006.01) F21S 2/00 (2006.01) F21V 5/02 (2006.01) F21K 99/00 (2010.01)

Patent

CA 2754426

An optical system and method provides at least one, and preferably an array of relatively small, high brightness light sources with a surrounding surface that exhibits brightness, thereby reducing the contrast between the high brightness produced by the light sources and the brightness of their surrounding surfaces. The optical system includes a light waveguide structure (25) that captures a portion of the light from the individual high- brightness light sources (29), and then re-emits the source light to create brightness in the light sources' surrounding surfaces (35). The optical system is particularly adapted for use with LEDs, but could be used with other high brightness light sources.

La présente invention concerne un système et un procédé optique qui offrent au moins une (et de préférence un réseau de) source de lumière relativement petite à forte luminosité avec une surface environnante qui montre de la luminosité, réduisant ainsi le contraste entre la forte luminosité produite par les sources de lumière et la luminosité de leurs surfaces environnantes. Le système optique comprend une structure de guide d'onde lumineuse (25) qui capture une partie de la lumière provenant des sources de lumière individuelles à forte luminosité (29), puis réémet la lumière source pour créer de la luminosité dans les surfaces environnantes des sources de lumière (35). Le système optique est particulièrement conçu pour être utilisé avec des DEL mais pourrait être utilisé avec d'autres sources de lumière à forte luminosité.

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