Patent ID: 8879170

Claim:
A condensing lens that condenses a light from a light source, the condensing lens comprising: a first incidence portion including a plurality of refractive surfaces that selectively enables a light emitted from the light source to be incident, based on an emission angle between the light and an optical axis of the light condensing lens; a second incidence portion including a plurality of totally-reflective surfaces that totally-reflects, in a forward direction, a light having an emission angle greater than a preset angle among lights incident upon the first incidence portion; and a third incidence portion including a plurality of refractive surfaces that enables a light totally-reflected by the second incidence portion and a light that is not totally-reflected by the second incidence portion to be incident, so as to refract the lights in a forward direction, wherein the first incidence comprises: a first refractive surface disposed at a front side of the light source so that a light having an emission angle less than a first preset angle, is incident upon the first refractive surface; a second refractive surface disposed to surround an outer side of the first refractive surface so that a light having an emission angle greater than or equal to the first preset angle and less than a second preset angle, is incident upon the second refractive surface; and a third refractive surface disposed to surround an outer side of the second refractive surface so that a light having an emission angle greater than or equal to the second preset angle, is incident upon the third refractive surface, wherein the first refractive surface is formed to be perpendicular to the optical axis.