Patent ID: 9464786
Filing Date: 2016-10-11
CPC Classification: F21V,F21Y,G02B

Claim Text:
1. A lens having a first surface and a second surface, the first surface and the second surface being positioned so as to be opposed to one another with the lens formed there between, the first surface and the second surface being shaped so as to be mirror symmetric to a first symmetric plane containing an optical axis of the lens, the first symmetric plane passing through the optical axis, the first surface and the second surface being light transmissive, the first surface having a first longitudinal V-shaped dent, a first apex of the first longitudinal V-shaped dent being directed downward into the lens, the first longitudinal V-shaped dent being symmetrically centered on the optical axis and positioned longitudinally along the first symmetric plane, the first surface having two longitudinal concave surfaces extending from both sides of the first longitudinal V-shaped dent with an inside of a concave curve of each concave surface directed downward into the lens so as to form a pair of first extrusion zones at both sides of the first longitudinal V-shaped dent in the two longitudinal concave surfaces, the second surface having a second longitudinal V-shaped dent, a second apex of the second longitudinal V-shaped dent being directed upward into the lens, the second longitudinal V-shaped dent being symmetrically centered on the optical axis and positioned longitudinally along the first symmetric plane, the second apex of the second longitudinal V-shaped dent being longitudinally aligned with the first apex of the first longitudinal V-shaped dent, the second surface having two longitudinal concave surfaces extending from both sides of the second longitudinal V-shaped dent with an inside of a concave curve of each concave surface directed upward into the lens, the second surface being shaped so as to form thereunder a space in which a light source is capable of being positioned on the optical axis so as to direct emitted light toward a portion of the second apex of the second surface, wherein the first surface and the second surface are shaped so as to refract light emitted from the light source along the optical axis and exiting the lens through the pair of first extrusion zones of the first surface by more than a predetermined angle offset from the optical axis.