Patent ID: 9689554
Date: 2017-06-27
CPC Classifications: F21V,F21Y,G02B

Claim:
1. An optical lens apparatus for distributing light from a light emitter, comprising: a lens body having an input side and an output side, the input side of the lens body positionable to receive light from the light emitter, the light from the light emitter including at least first and second portions of light, the first portion of light initially directed into a first region of the lens body and the second portion of light initially directed into a second region of the lens body; a first refractive output surface positioned on the output side of the first region of the lens body, the first refractive output surface refracting the first portion of the light from the light emitter to direct the first portion of the light to a desired illumination region; and a total internal reflection surface positioned on the output side of the second region of the lens body, the total internal reflection surface reflecting the second portion of the light from the light emitter; a second refractive output surface positioned on the output side of the second region of the lens body, the second refractive surface comprising a plurality of refractive elements, the refractive elements of the second refractive surface receiving the second portion of light reflected by the total internal reflection surface and refracting the second portion of light to the desired illumination region; wherein the plurality of refractive elements comprise a plurality of spaced apart arcuate convex elements with a respective concave element positioned between adjacent arcuate convex elements; and wherein the plurality of refractive elements comprise seven convex refractive elements and six concave refractive elements, and the convex refractive elements have a total arc length that is approximately 5.4 times a total arc length of the concave refractive elements.