Patent ID: 8545061
Filing Date: 2013-10-01
Classification: G02B,H01L

Abstract:
1. A light emitting diode (LED) device, comprising: a substrate having an upper surface; an LED chip arranged on the upper surface of the substrate, the LED chip having a light emitting surface away from the upper surface of the substrate; and a lens module arranged over the light emitting surface of the LED chip, the lens module comprising a first lens, the first lens comprising a first light outputting surface away from the light emitting surface of the LED chip, the first light outputting surface of the first lens defining a first cavity at a center of a top thereof; wherein the first lens has a hemispherical shape; wherein the first cavity has a conical shape, and a central axis of the first cavity extends through a spherical center of the first lens; and wherein a distance H between a lowest point of the first cavity and a spherical center of the first lens and a spherical radius R of the first lens satisfy a condition: