Lighting assembly with asymmetrical light ray angle distribution

摘要

A lighting assembly that efficiently collects and accurately directs light with a defined asymmetrical light ray angle distribution onto a nearby target surface. The light with the asymmetrical light ray angle distribution illuminates the target surface with a defined illumination profile. In theatrical and architectural lighting, the defined illumination profile is an even illumination profile on a nearly vertical surface. In street lighting, the defined illumination profile is an even illumination profile on a horizontal surface. The lighting assembly includes an LED and a solid reflector optic having a reflective surface shaped to reflect light from the LED in a way that produces the asymmetrical light ray angle distribution at least in part.

主权项

1. A lighting assembly, comprising:
an entirely solid light-transmissive and planar reflector optic having opposed major surfaces, and side surfaces extending between the major surfaces, the side surfaces comprising:
a first side surface and a second side surface extending in respective directions from an apex, anda complexly-curved, reflective side surface opposite the apex, the reflective side surface extending between the first side surface and the second side surface; and a light-emitting diode to input light into the solid reflector optic through a portion of the second side surface adjacent the apex, the input light propagating within the solid reflector optic by total internal reflection at the major surfaces, wherein the reflective side surface is shaped to reflect the input light incident thereon through the second side surface.