Illumination system and method for recycling light to...

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

Patent

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F21V 8/00 (2006.01) G02B 6/00 (2006.01)

Patent

CA 2652240

An illumination system for increasing the brightness of a light source comprises an optical recycling device (200) coupled to the light source (100), preferably light emitting diode (LED), for spatially and/or angularly recycling light. The optical recycling device (200) spatially recycles a portion of rays of light emitted by the LED back to the light source (100) using a reflector or mirror (400) and/or angularly recycles high angle rays of light and transmits small angle rays of light, thereby increasing the brightness of the light source's (100) output.

L'invention concerne un système d'éclairage destiné à augmenter la luminosité d'une source lumineuse. Le système comprend un dispositif de recyclage optique couplé à la source lumineuse, de préférence une diode électroluminescente (DEL), pour recycler la lumière de façon spatiale et/ou angulaire. Le dispositif de recyclage optique recycle de façon spatiale une partie des rayons de lumière émis par la DEL en retour vers la source lumineuse à l'aide d'un réfléchisseur ou d'un miroir et/ou recycle de façon angulaire des rayons de lumière à angle élevé et transmet des rayons de lumière à angle faible, augmentant ainsi la luminosité de l'émission de la source lumineuse.

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