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Proceedings Paper

Design and optimization of an optical channel for controlling the divergence of the radiated power from a thermal beacon
Author(s): Farid Behazin; Mehdi N. Fesharaki; Abdolreza Nabavi; Ali Mahmoodi
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Paper Abstract

The effects of conical optical channel parameters on divergence of the rays radiated from an emitter plate are investigated. The optical channel is used to maximize the radiant power (flux) in a given solid angle at the exit aperture of the channel. A simulation method is presented for optimizing the channel layout, using channel gain (efficiency) as a measure of the output radiant power. Monte Carlo method is employed to generate emitted rays, and ray tracing is performed in a 3D fashion using each of the three reflection models, i.e., specular, diffuse, and Gaussian. The simulation results indicate that, for a given solid angle of output radiation, the channel gain attains a maximum for certain values of length, cone angle and two radii of the semi-conical channel. Moreover, the channel length has only a scaling effect on channel gain, when the cone angle and ratio of two radii are constant.

Paper Details

Date Published: 6 October 1999
PDF: 12 pages
Proc. SPIE 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V, (6 October 1999); doi: 10.1117/12.368254
Show Author Affiliations
Farid Behazin, YMA Research & Industrial Complex (Iran) and Tarbiat-Modarres Univ. (Iran)
Mehdi N. Fesharaki, YMA Research & Industrial Complex (Iran)
Abdolreza Nabavi, Tarbiat-Modarres Univ. (Iran)
Ali Mahmoodi, YMA Research & Industrial Complex (Iran) and Tarbiat-Modarres Univ. (Iran)

Published in SPIE Proceedings Vol. 3781:
Nonimaging Optics: Maximum Efficiency Light Transfer V
Roland Winston, Editor(s)

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