LED WITH LIGHT DIVERGENT LENS

摘要

An LED includes a base, a chip mounted on the base and a lens covering the chip. The lens has a light incident face contacting the chip and a light emerging face away from the chip. The light emerging face includes a first face confronting the chip and a second face surrounding the first face. The first face is a conical face having a diameter gradually decreasing towards the chip, and the second face is a conical face having a diameter gradually increasing towards the chip.

主权项

1. An LED (light emitting diode) comprising:
a base having a plate and a reflective cup formed on a top end of the plate; a chip mounted on the plate of the base and surrounded by the reflective cup; and a lens covering the chip, the lens comprising a lower part filling in the reflective cup and an upper portion formed on above of the reflective cup, the bottom portion comprising a light incident face and the upper portion comprising a light emerging face, the light emerging face comprising a first face confronting the chip and a second face surrounding the first face, the upper portion further comprising a connecting face contacting a top surface of the reflective cup and connecting a bottom end of the second face, the first face being a smooth conical face and having a V-shaped cross section, the second face extending downwardly from a top end of the first face to an outer periphery of the connecting face, the first face having a diameter gradually decreasing in a direction towards the chip, and the second face having a diameter gradually increasing in a direction towards the chip, the bottom end of the second face and the outer periphery of the connecting face located beyond an outer circumferential periphery of the reflective cup, and a top end of the second face located at inside of the outer circumferential periphery of the reflective cup.