LED WITH REMOTE PHOSPHOR AND SHELL REFLECTOR

摘要

The present disclosure provides a configuration and technique of fabricating remote phosphor optics (such as lenses) for downconverting LEDs, replacing the prior art solid hemispherical lenses with a novel thin-shell hemispherical lens that can be used with a wide range of encapsulating materials, including low index materials such as air and methyl silicones. The present disclosure further provides a configuration and technique whereby the remote phosphor lenses can be used with an LED array.

主权项

1. A lamp, comprising:
a light emitting diode (LED) disposed on a substrate; a light conversion material adjacent the LED; a light transmissive shell, comprising:
an exterior convex surface;an interior concave surface;an edge extending from the interior concave surface, the edge attached to the substrate and enclosing the LED and the light conversion material within a volume between the interior concave surface and the substrate; and a dichroic coating disposed on at least one of the exterior convex surface or the interior concave surface,wherein the dichroic coating is reflective to a first wavelength range of light emitted by the LED, and transmissive of other wavelength ranges of light.