Patent ID: 8026529

Claim:
A light-emitting diode light source module, comprising: a light-emitting diode; an optical lens facing the light-emitting diode, the optical lens comprising a light-emitting surface, a light-extracting surface on the opposite to the light-emitting surface, and a side surface interconnecting the light-emitting surface and the light-extracting surface, the light-emitting surface comprising a first light-emitting portion and a second light-emitting portion, the first light-emitting portion comprising a substantially flat surface, the light-extracting surface comprising a first light-extracting portion and a second light-extracting portion surrounding the first light-extracting portion, the first light-extracting portion comprising a concave surface, and the side surface comprising a total refraction surface; wherein an angle between the first light-emitting portion and the second light-emitting portion is an obtuse angle, an angle between the second light-emitting portion and the side surface is an acute angle, and an angle between the side surface and second light-extracting portion is an acute angle.