Patent ID: 7254309

Claim:
A lens adapted for a light source, comprising: a bottom surface; an incident surface connected to the bottom surface and surrounding the light source; a reflective surface forming an angle with a central optic axis of the lens; a first refractive surface; a first transitive surface located between the reflective surface and the first refractive surface; a second refractive surface connected to the first refractive surface; a third refractive surface connected to the bottom surface; and a second transitive surface located between the second refractive surface and the third refractive surface; wherein a light emitted from the light source enters the lens through the incident surface, a portion of the light being reflected by the reflective surface to the second refractive surface, then being refracted by the second refractive surface and emitting out of the lens along a first optical path, the other portion of the light directly being refracted by the first refractive surface and emitting out of the lens along a second optical path, and being refracted by the third refractive surface and emitting out of the lens along a third optical path.