| 摘要 |
<p>An optical device (10) for collecting light and selectively outputting or concentrating the light. A layer (12) has an optical index of refraction n1, and top (14), bottom (16) and side surfaces intersecting to define an angle of inclination phi . A back surface (20) spans the top, bottom and side surface. A first layer (28) is coupled to the bottom surface (16) of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface (20) of the layer (12) to be preferentially output into the first layer (28). A second layer (30) is coupled to the bottom of the first layer (28) and selectively causes output of light into ambient. The layer can also have a variable index of refraction n (x, y, z). <IMAGE> <IMAGE></p> |
