초록 ▼

Downlight and downlight wall wash reflectors particularly useful with compact fluorescent lamps and other large-area light sources, the reflector optics of the invention maximize the efficiency of the luminaire while providing brightness control and avoidance of high angle glare or "flash". Downligh

Downlight and downlight wall wash reflectors particularly useful with compact fluorescent lamps and other large-area light sources, the reflector optics of the invention maximize the efficiency of the luminaire while providing brightness control and avoidance of high angle glare or "flash". Downlight reflectors according to the invention provide a truly uniform illuminance distribution across the illuminated area when applied in a rectangular grid with maximum use of available light by providing an upper amplifying reflector section which reflects normally underutilized light to a lower distribution reflector section which radiates a large percentage of generated light effectively from the bottom of the light source, thus reducing the apparent size of the light source and increasing optical control. The lower reflector section reflects light only into zones where the light is needed and avoids high angle zones, most of the light being reflected into zones from 35.degree. to 45.degree. from vertical or nadir, thereby widening the distribution and also producing high efficiency and aesthetically pleasing performance. Wall wash reflectors according to the invention are provided with a specular lower zone formed by a specular finish at lower portions of the wall washing reflectors to yield high light levels on a vertical wall near the ceiling line while avoiding high angle glare or "flash" in the opposite direction.

대표청구항 ▼

[ What is claimed is:] [1.] In a lighting fixture having a large-area light source and a cutoff angle, the improvement comprising a reflector having a light concentration section within which at least portions of the light source are located and a light distribution section optically joined to the l

[ What is claimed is:] [1.] In a lighting fixture having a large-area light source and a cutoff angle, the improvement comprising a reflector having a light concentration section within which at least portions of the light source are located and a light distribution section optically joined to the light concentration section, light produced by the light source internally of the light concentration section being internally reflected therewithin to the light distribution section, the light distribution section directing light from an aperture thereof opposite the light concentration section to illuminate surfaces of an environmental space, the light distribution section having an optical contour generated by rotation about a center line of a curve defined by end points lying respectively on lines having an angle to the horizontal equal to shield angles approaching the reflector from opposite sides thereof, the lines each having an outline of the light source above said lines with the lines being tangential to said light source.