Abstract
Prism light guides are hollow structures which pipe light by means of total internal reflection (TIR). These devices are unique in their ability to combine the efficiency of TIR with the relatively low cost of a hollow structure. An important application stems from their ability to transform a point source of light such as an incandescent or discharge lamp into a linear or area source of light or illumination. We report the development of an economical, flexible prismatic film for fabricating the light guide wall. This film is adaptable to a wide variety of applications, some of which are described. Other guide geometries and films are currently under development.
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