Patent ID: 8348475

Claim:
A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis and defining an emitter plane, comprising: an outer surface configured for refracting emitter light; an emitter-adjacent base end forming an emitter-receiving opening to an emitter-surrounding cavity; a refracting inner surface defining the emitter-surrounding cavity and including: a front sector centered on the preferential side and having a first configuration for refracting light from the emitter; and a back sector centered on the non-preferential side radially opposite the preferential side and having a second configuration for refracting light from the emitter, the second configuration differing from the first configuration; and an axially-offset reflecting primary back surface positioned to receive light from at least a portion of the refracting-inner-surface back sector and configured for total internal reflection (TIR) thereof toward the lens outer surface.