1 July 2004 Analytical model of flux propagation in light-pipe systems
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An analytical model of light propagation in rectangular light pipes, termed the flux confinement diagram (FCD), is developed. Based on the edge ray concept of nonimaging optics, the FCD is a construction that describes the angular distribution of flux propagating in a light pipe depending on a light pipe's index of refraction and its geometry. With the FCD model, the angular "mode" of a ray can be defined at any plane in the system. The FCD model is developed here and used to describe flux input coupling, transport, and output coupling in light-pipe illumination systems. The practical example of a flux loss prediction due to a geometrical change (a bend) is examined using the FCD and compared to a ray-tracing analysis. We discuss how this model of flux propagation is a useful tool to aid in "first-order" design and layout of light-pipe illumination systems.
© (2004) Society of Photo-Optical Instrumentation Engineers (SPIE)
John Felix Van Derlofske, John Felix Van Derlofske, Thomas A. Hough, Thomas A. Hough, } "Analytical model of flux propagation in light-pipe systems," Optical Engineering 43(7), (1 July 2004). https://doi.org/10.1117/1.1753272 . Submission:


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