Light fixture with textured reflector

摘要

A light fixture with a textured reflector surface is disclosed. Embodiments of the present invention provide for a lighting system in which LEDs face, and the majority of light form the LED light source is incident on, a textured surface of a back reflector while producing minimal glare and minimal imaging of the light source. Such a reflector may be referred to as a retro-reflector. The reflector for the light fixture can be made from a relatively inexpensive material such as polycarbonate, which without texturing has a specular or semi-specular surface. This material can be used alone or with a metal substrate to form the reflector. The textured surface can be textured by way of an imprinted pattern or by roughening, and can be extruded. A prismatic texture may be used. The texturing can also be spatially varied.

主权项

1. A troffer fixture comprising:
a reflector to provide back reflection of light, wherein the reflector includes a single surface comprising a substantially flat central region making a smooth transition to two parabolic regions on opposite sides of the substantially flat central region, and a plastic material with a plurality of pyramidal elements, wherein the plastic material is at least semi-specular and is fixed to a metal substrate arranged for the troffer fixture to be used in a plenum-rated application; and a plurality of LEDs to emit light, the plurality of LEDs positioned to face opposite an illumination area that is external to the troffer fixture so that at least 70% of the light from the plurality of LEDs is incident on the textured surface and is reflected into the illumination area from the troffer fixture.