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20 October 1998 Design methods for illumination light pipes
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Light pipes are useful for non conventional illumination problems in cars, for displays, etc. The design of such devices is a challenging problem because of the large number of parameters. Depending on the application, the light pipes have various shapes and dimensions. This paper investigates different design strategies for light pipe illumination devices. A new generation of commercially available non- sequential ray-tracing programs allow the analysis of scattering light pipes. However, the modeling of complex optical systems requires the knowledge of the physical behavior and the related numerical algorithms. For the design optimization, ray-tracing is too cumbersome because of the large number of necessary rays. Therefore, we introduce a finite element approach to describe the power transfer through appropriately chosen volume elements. This method gives a good estimation of the macroscopic behavior of the light pipe. The fine tuning of the different pipe parameters is made easier. In addition, the possibility to simulate the light pipe in its surrounding environment by means of global illumination methods is discussed.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juan Manuel Teijido, Hans Peter Herzig, Claude Fuhrer, and Pierre-Jean Erard "Design methods for illumination light pipes", Proc. SPIE 3428, Illumination and Source Engineering, (20 October 1998);


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