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Published on: May 20, 2013
Transmission characteristics of specularly reflecting light pipes uniformly irradiated by obliquely inclined rays
Abstract:
The light-pipe efficiency or fraction of the incident energy transmitted from one end to the other is expressed as a function of the wall reflectivity rho and geometrical parameters. Light pipes with both circular and rectangular cross sections are considered. The analysis includes skew rays and is mathematically exact within the limits of geometrical optics and a constant specular wall reflectivity. The distribution along the light pipe of the average intensity incident upon the walls is also derived.
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