Tapered multilayer luminaire devices

Details Tapered multilayer luminaire devices Tapered multilayer luminaire devices

1993-03-11

1994-04-12

Lee, John D.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

385 43, 385901, 385129, 385131, G02B 626

Patent

active

053033221

ABSTRACT:
An optical device for collecting light and selectively outputting or concentrating the light. A wedge layer has an optical index of refraction n.sub.1, and top, bottom and side surfaces intersecting to define an angle of inclination d. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n.sub.2. The first layer index n.sub.2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as an air gap, can be provided adjacent to the wedge shaped layer. The wedge shaped layer can also have a variable index of refraction n (x,y,z).

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