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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 7 — Mar. 1, 2000
  • pp: 1152–1158

Faceted concentrators optimized for homogeneous radiation

Andreas Timinger, Abraham Kribus, Pinchas Doron, and Harald Ries  »View Author Affiliations


Applied Optics, Vol. 39, Issue 7, pp. 1152-1158 (2000)
http://dx.doi.org/10.1364/AO.39.001152


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Abstract

For technical reasons, large three-dimensional compound parabolic concentrators (CPC’s) are often built from facets with either no or only one-dimensional curvature. We analyze CPC approximations made with various numbers of axial and circumferential subdivisions. Incident radiation within half-angles of 10° and 30° is considered. The reflectivity of the mirrors is assumed to be 90% or 95%. The performance of faceted concentrators can be significantly improved by optimization as compared with heuristic CPC approaches. The highest increase in transmission that we observed was 19% greater as compared with that of a heuristic CPC approximation. The shapes of the optimized concentrators differ from that of a classic CPC, and most of the optimized concentrators are longer than a classic CPC. For practical concentrators with a small number of facets, the optimized geometry provides better performance than a heuristic approximation of the CPC shape.

© 2000 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(220.0220) Optical design and fabrication : Optical design and fabrication

History
Original Manuscript: September 20, 1999
Revised Manuscript: November 30, 1999
Published: March 1, 2000

Citation
Andreas Timinger, Abraham Kribus, Pinchas Doron, and Harald Ries, "Faceted concentrators optimized for homogeneous radiation," Appl. Opt. 39, 1152-1158 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-7-1152

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