Patent ID: 9360616
Filing Date: 2016-06-07
CPC Classification: G02B

Claim Text:
1. A light emitting module, comprising: a light guide plate having a first light incident surface, a second light incident surface, a first surface and a second surface, wherein the first light incident surface is opposite to the second light incident surface, and the first surface is opposite to the second surface; at least two light units; and a plurality of light guide grooves each being disposed on the first surface at an interval and having a bottom being the portion of each light guide groove closest to the second surface, wherein after the light emitted from the light unit enters the light guide plate, the light is guided by the light guide grooves to be emitted off the second surface of the light guide plate; wherein, the light guide plate has the two light units respectively on each of the first light incident surface and the second light incident surface, and the distance from each bottom to the second surface is determined by following equation: y′=D−(ax