Tapered multilayer luminaire devices

Details Tapered multilayer luminaire devices Tapered multilayer luminaire devices

1994-04-11

1996-06-18

Bovernick, Rodney B.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

385 43, 385129, 385131, G02B 626

Patent

active

055287204

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 .phi.. 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 a light polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light or diffuse light having passed through the LCD layer to enhance viewing of the output light.

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