Patent ID: 8911118
Filing Date: 2014-12-16
Classification: F21V,F21W,F21Y,G02B

Abstract:
1. A lens having an optical axis and a light source recess for disposing a light source, the lens further comprising: a first light emitting surface facing to the light source recess; and a second light emitting surface intersecting with the first light emitting surface and being on same side of the light source recess with the first light emitting surface, an intersecting line formed between the first light emitting surface and the second light emitting surface, and having a cross point with the optical axis, a profile of section of the first, second light emitting surface, which is taken along the optical axis and perpendicular to the intersecting line, having at least one tangent line which has an acute angle with the optical axis along the emitting orientation of the light emitted from the first, second light emitting surface, the profiles of the first, second light emitting surface being asymmetrical in shape to the optical axis.