Patent ID: 8419263
Filing Date: 2013-04-16
Classification: G02B

Abstract:
1. A light source module, comprising: a light guide plate having a light exiting surface, a light reflecting surface opposite to the light exiting surface, and at least one light entering surface connecting the light exiting surface and the light reflecting surface, the light guide plate having a plurality of light reflective structures on the light reflecting surface, each of the light reflective structures comprising a closed light active region and a plurality of protrusions in the light active region, wherein the light active region and the light reflecting surface are not coplanar and the protrusions extend outward from the light guide plate; and a light source device, disposed corresponding to the light entering surface, and providing a light entering the light guide plate from the light entering surface and exiting the light guide plate from the light exiting surface after the light is redirected by one of the protrusions on the light reflecting surface, wherein each of the light reflective structures is constituted by a plurality dot patterns and any two adjacent dot patterns are partially overlapped, each dot pattern is circular, a radius of each dot pattern is r, a distance overlapped by the two adjacent dot patterns is d, and r/3<d<2r.