Patent ID: 9645301
Date: 2017-05-09
CPC Classifications: F21V,G02B,G02F

Claim:
1. A lighting assembly, comprising: a light guide comprising: a light source positioned relative to the light input edge to input light into the light guide via the light input edge; and a cover element comprising a first major surface and a second major surface opposed to the first major surface, the first major surface of the cover element juxtaposed with the first major surface of the light guide and the light output from the light guide via the first major surface of the light guide entering the cover element via the first major surface of the cover element and propagating toward the second major surface of the cover element; wherein the second major surface of the cover element comprises optical elements, the optical elements each comprising plural surfaces arranged relative one another so that the optical element redirects light incident on any one of the surfaces of the optical element and travelling in a direction with any length-width vector component to have a reduced angle in the thickness direction as the light exits the cover element through the optical element, wherein the surfaces of the optical elements are curved, curvature of the surfaces being a change in angle over the surface in the thickness direction, and wherein: