Patent ID: 7794118
Filing Date: 2010-09-14
Classification: F21V,F21Y,H01L,Y10S

Abstract:
1. An LED assembly comprising: an LED; and a lens covering on an outer periphery of the LED, wherein the LED has an LED chip and an encapsulant encapsulating the LED chip therein, the LED chip comprises a light emitting surface, the lens has a light output surface over the light emitting surface, the light output surface defines a plurality of annular, concentric grooves each of which extends along a circumferential direction of the light output surface, each groove being cooperatively enclosed by an upper groove wall and a lower groove wall, the upper groove wall being a portion of a periphery of an imaginary cone, a conical tip of the imaginary cone being located on the light emitting surface of the LED chip, light emitted from the LED chip being upwardly dispersed out of the light output surface which includes a top end of an upper portion of the lens.