Patent ID: 8408775

Claim:
An optical element comprising: a) an input surface; b) an output surface; c) first light transmitting regions; d) first anisotropically backscattering regions comprising asymmetrically shaped dispersed phase domains oriented substantially parallel to a first axis dispersed in a second light transmitting material; e) lenticular elements formed in a first light transmitting material wherein the lenticular elements comprise at least a first group of lenticular elements oriented parallel to the first axis; f) a light transmitting layer disposed in an optical path between the input surface and the first group of lenticular elements comprising the first anisotropically backscattering regions disposed in-between the first light transmitting regions; wherein the first anisotropically backscattering regions scatter light received from the input surface back toward the input surface in a larger angular full-width at half maximum intensity in a first plane orthogonal to the input surface and parallel to the first axis than in a second plane orthogonal to the first plane.