BATWING LIGHT BEAM DISTRIBUTION USING DIRECTIONAL OPTICS

摘要

A luminaire (10) is provided to redirect incidence light from one or more solid state light sources (22) to a batwing distribution with both tunable peak angle and beam width. The peak angle is able to be tuned from 90 degree to 0 degree from the incidence direction with very high efficiency. The beam width is able to be tuned with either narrow beam angle solid state light sources (22) for high efficiency or TIR lens or the optical properties of a reflector for versatility. Uniform illuminance distribution is thus achieved across a wide field with or without a prism or diffuser cover.