General Electric Company

J Bradley Pearce

Mitchell M Osteen

C David Taylor

A luminaire capable of directing a high percentage of light source output in a downward direction includes a housing base, a light source mounted and electrically coupled to the housing base and a dome-shaped lens member made of light transmissive material disposed in surrounding relation to the light source. The lens member has a first region formed adjacent the housing base on which is disposed a first plurality of prismatic surfaces which both reflect and refract light in the downward direction. A second region is formed on the lens member adjacent the first region and includes a second plurality of prismatic surfaces which refract light output.

Luminaire having predominantly refractive downlight capabilities

This luminaire comprises a reflector of transparent material having a prismatic outer surface that includes many juxtaposed prisms. Each prism includes two reflecting surfaces meeting at an apex and having portions disposed to effect total internal reflection of a large percentage of the light rays from the light source of the luminaire. Immediately adjacent the outer surface of the reflector, there is a cover of substantially transparent material that protects the prism reflecting surfaces from deposits that could interfere with their total internal reflecting properties. The cover is spaced from the prismatic outer surface at substantially all points on the prism reflecting surfaces where such reflecting surfaces are disposed to effect total internal reflection of the light source rays.

Growing community of inventors

Horse Shoe, NC, United States of America

J Bradley Pearce