LENS AND LIGHT SOURCE MODULE INCORPORATING THE SAME

摘要

A lens includes a light incident face, a light exit face opposite to the light incident face and a plurality of annular stepwise portions formed on the light exit face. The stepwise portions are located at or near a periphery of the light exit face and each stepwise portion has an annular flat surface. A plurality of micro patterns are arranged on the flat surface of one stepwise portion to scatter light exiting from the periphery of the light exit face. A light source module incorporating the lens is also provided. The light source module includes an LED light source. Light from the LED light source enters the lens from the light incident face and leaves the lens from the light exit face after the light is divergently refracted by the lens.

主权项

1. A lens configured for divergently refracting light from an LED (light emitting diode) light source comprising:
a light incident face configured for receiving the light from the LED light source; a light exit face opposite to the light incident face, configured for directing the light from the LED light source away from the lens; and a plurality of annular stepwise portions formed on the light exit face; wherein the plurality of the stepwise portions are formed at or near a periphery of the light exit face, each stepwise portion comprises an annular flat surface, and a plurality of micro patterns are arranged on the flat surface of at least one of the stepwise portions to scatter light exiting from the periphery of the light exit face.