Patent ID: 8840275

Claim:
A lighting assembly, comprising: a light guide comprising a solid and light transmissive medium having: opposed major surfaces between which light propagates by total internal reflection, the opposed major surfaces spaced apart in a thickness direction of the light guide; a light input edge that extends in the thickness direction between the opposed major surfaces and having a surface area through which the light is received into the light guide; and two light regions at least one of which is associated with one of the major surfaces, each light output region being associated with a different optical characteristic and the at least one light output region associated with one of the major surfaces defined by light extracting elements at least one of the major surfaces of the light guide, the light extracting elements disrupting the total internal reflection of the propagating light in the light guide to output the light from the light guide via the respective light output region; and a light source located adjacent the light input edge to input light into the light guide through the surface area of the light input edge, the light source and the light guide variably positionable relative to one another to vary a location on the surface area of the light input edge at which the light is input to the light guide; wherein, due to the relative positioning of the light source and the light guide, the light is emitted from the light guide selectively apportioned between the light output regions and with a characteristic of the light output from the lighting assembly modified based on the optical characteristics associated with the light output regions.