Patent ID: 9234650
Filing Date: 2016-01-12
CPC Classification: F21V,F21Y,G02B,H01L

Claim Text:
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, the first region and the second region separated by a transverse reference plane passing through the light emitter; a refractive output surface positioned on the output side of the first region of the lens body, the refractive output surface refracting the first portion of the light from the light emitter to direct and the first portion of the light to a desired illumination region; and a light redirecting fin positioned on the output side of the second region of the lens body, the light redirecting fin having a proximal end and a distal end, the distal end positioned farther from the input side of the lens body than the distal end, the light redirecting fin including a total internal reflection surface extending from the proximal end to the distal end of the light redirecting fin and spaced apart from the transverse reference plane, the light redirecting fin including a refracting surface, the refracting surface of the light redirecting fin extending at an acute angle from the distal end of the total internal reflection surface to an intersection with the transverse reference plane, the total internal reflection surface reflecting the second portion of the light from the light emitter to direct the second portion of the light toward the desired illumination region, at least a portion of the second portion of light reflected by the internal reflection surface passing through the second refracting surface of the light directing fin wherein the total internal reflection surface of the light redirecting fin is positioned at varying distances from the transverse reference plane such that a proximal portion of the total internal reflection surface is farther from the reference plane than a distal portion of the total internal reflecting surface; the total internal reflection surface comprises a plurality of planar longitudinal faces, each face having a proximal edge and a distal edge, each respective distal edge of a longitudinal face closer to the transverse reference plane than the respective proximal edge of the longitudinal face.