Patent ID: 9690032
Date: 2017-06-27
CPC Classifications: G02B,G02F

Claim:
1. A lightguide comprising: a film including a body having a first surface and an opposing second surface and a plurality of coupling lightguides extending from the body, each coupling lightguide of the plurality of coupling lightguides having an end, the plurality of coupling lightguides folded and stacked such that the ends of the plurality of coupling lightguides define a light input surface; the body of the film comprising a light emitting region defined by a plurality of light extracting features and a light mixing region positioned between the plurality of coupling lightguides and the light emitting region, the light mixing region folded behind the light emitting region at a first bend with a first bend diameter in a first plane, wherein the first bend diameter is greater than an average separation between the first surface of the film within the light emitting region and the first surface of the film within the light mixing region positioned behind the light emitting region.