Patent ID: 8390182
Filing Date: 2013-03-05
Classification: F21K,F21V

Abstract:
1. A light emitting diode bulb, comprising: a heat sink; a light source plate disposed on the heat sink, the light source plate comprising: a reflective frame disposed on the light source plate, the reflective frame comprising: a secondary optical component covering the light source plate and the reflective frame and physically connected to the heat sink, wherein the reflective pillar of the reflective frame is connected to the secondary optical component, the secondary optical component is doped with a plurality of diffusion particles and has a first optical surface and a second optical surface, the first optical surface connects the heat sink and the second optical surface, an absolute value of a slope of a tangent line of any point on the first optical surface with respect to the heat sink is substantially constant, and an absolute value of a slope of a tangent line of any point on the second optical surface is gradually smaller along a direction away from the heat sink.