Patent ID: 8922734
Filing Date: 2014-12-30
Classification: G02B,G02F

Abstract:
1. A lens for diffusing light from an LED (light emitting diode) onto a diffusion plate of an LCD (light crystal display) module, comprising: a light-refraction portion comprising a light-incident face and a light-emergent face opposite to the light-incident face, the light-emergent face being configured for facing the diffusion plate; wherein one of the light-incident face and the light-emergent face defining a plurality of dots therein, each of the dots having an inner face concaved from the one of the light-incident face and the light-emergent face; wherein the dots are arranged in a center of the light-refraction portion and a plurality of circles concentric about the center of the light-refraction portion, the number of the dots in each circle is equal to each other.