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Proceedings Paper

High-irradiance reactor design with practical unfolded optics
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Paper Abstract

In the design of high-temperature chemical reactors and furnaces, as well as high-radiance light projection applications, reconstituting the ultra-high radiance of short-arc discharge lamps at maximum radiative efficiency constitutes a significant challenge. The difficulty is exacerbated by the high numerical aperture necessary at both the source and the target. Separating the optic from both the light source and the target allows practical operation, control, monitoring, diagnostics and maintenance. We present near-field unfolded aplanatic optics as a feasible solution. The concept is illustrated with a design customized to a high-temperature chemical reactor for nano-material synthesis, driven by an ultra-bright xenon short-arc discharge lamp, with near-unity numerical aperture for both light input and light output. We report preliminary optical measurements for the first prototype, which constitutes a double-ellipsoid solution. We also propose compound unfolded aplanats that collect the full angular extent of lamp emission (in lieu of light recycling optics) and additionally permit nearly full-circumference irradiation of the reactor.

Paper Details

Date Published: 27 August 2008
PDF: 9 pages
Proc. SPIE 7059, Nonimaging Optics and Efficient Illumination Systems V, 705903 (27 August 2008);
Show Author Affiliations
Daniel Feuermann, Ben-Gurion Univ. of the Negev (Israel)
Jeffrey M. Gordon, Ben-Gurion Univ. of the Negev (Israel)

Published in SPIE Proceedings Vol. 7059:
Nonimaging Optics and Efficient Illumination Systems V
Roland Winston; R. John Koshel, Editor(s)

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