Patent ID: 8740443

Claim:
An apparatus, comprising: a light guide; a first light input section configured to receive light in a first direction into the light guide; a second light input section configured to receive light in a second direction into the light guide, the second direction being different than the first direction; first direction-dependent outcoupling structures having a length oriented orthogonal to the first direction operable to couple out light propagating through the light guide in the first direction, the first direction-dependent outcoupling structures, terminating in a smooth curve at longitudinal ends; and second direction-dependent outcoupling structures having a length oriented orthogonal to the second direction operable to couple out light propagating through the light guide in the second direction, the second direction-dependent outcoupling structures terminating in a smooth curve at longitudinal ends; and wherein the first direction-dependent outcoupling structures are oriented co-planar with, and generally spaced apart from and do no contact the second direction-dependent outcoupling structures.