High efficiency light source using solid-state emitter and...

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

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F21S 19/00 (2006.01) F21S 9/00 (2006.01)

Patent

CA 2565339

A light emitting apparatus includes a source of light (17); a down conversion material (12) receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device (14a, 14b) configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source (17) of light is a semiconductor light emitting diode, a laser diode or a resonant cavity light emitting diode. The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.

L'invention concerne un appareil émetteur de lumière comprenant une source lumineuse; un matériau abaisseur de fréquence recevant la lumière émise et la convertissant en lumière transmise et en lumière transmise vers l'arrière; et un dispositif optique configuré afin de recevoir la lumière transmise vers l'arrière et de la transférer à l'extérieur du dispositif optique. La source lumineuse est une diode électroluminescente semi-conductrice notamment une diode électroluminescente (LED), une diode laser (LD) ou une diode électroluminescente à cavité résonante (RCLED). Le matériau abaisseur de fréquence comprend un phosphore ou un a utre matériau permettant d'absorber la lumière dans une région spectrale et d'émettre de la lumière dans une autre région spectrale. Le dispositif optique ou la lentille comprennent un matériau transmetteur de lumière.

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