Patent ID: 8390182

Claim:
A light emitting diode bulb, comprising: a heat sink; a light source plate disposed on the heat sink, the light source plate comprising: a circuit board disposed on the heat sink; and a plurality of light emitting devices disposed on the circuit board; a reflective frame disposed on the light source plate, the reflective frame comprising: a plate portion disposed on the circuit board and having a plurality of openings to expose the light emitting devices; and a reflective pillar disposed on the plate portion and physically connected to the plate portion; and 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.