Patent ID: 9703031
Date: 2017-07-11
CPC Classifications: F21K,F21Y,G02B

Claim:
1. A lighting assembly, comprising: a light guide to propagate light by total internal reflection, the light guide comprising opposed major surfaces and a light input edge extending between the major surfaces in a thickness direction through which light is input into the light guide, wherein: a light source located adjacent the light input edge to edge light the light guide; and an array of micro-optical elements of well-defined shape at at least one of the opposed major surfaces, the array of micro-optical elements corresponding to the light source, each of the micro-optical elements in the array comprising a longitudinal axis arranged within the range of +45° to −45° relative to the light input edge, wherein a path linearly extending along the light guide from the light input edge intersects at least a portion of the micro-optical elements in the array, at least one of the micro-optical elements along the path arranged with the longitudinal axis thereof at a positive angle relative to the light input edge, and at least another one of the micro-optical elements along the path arranged with the longitudinal axis thereof at a negative angle relative to the light input edge.