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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 16 — Aug. 15, 1988
  • pp: 3556–3560

Photovoltaic concentrator using a holographic optical element

Y. W. Zhang, C. S. Ih, H. F. Yan, and M. J. Chang  »View Author Affiliations


Applied Optics, Vol. 27, Issue 16, pp. 3556-3560 (1988)
http://dx.doi.org/10.1364/AO.27.003556


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Abstract

A photovoltaic concentrator is proposed that uses equatorial tracking (the rotation axis of a concentrator points to the North Star), so that the change of the sun’s altitude angle is minimized. The solar concentrator consists of a Fresnel lens (objective), a holographic optical element made on photoresist with 90% diffraction efficiency, and a field lens (making the sunlight come from different fields of view uniformly falling on the solar cell). The accuracy of the original 2-D tracking is reduced several orders over previous methods; however, it may be that only 1-D tracking is needed. A theoretical analysis and a study model have been made, and a reasonable concentration ratio has been obtained. Therefore, it can be expected that the cost will be much lower than an accurate 2-D tracking system.

© 1988 Optical Society of America

History
Original Manuscript: March 19, 1987
Published: August 15, 1988

Citation
Y. W. Zhang, C. S. Ih, H. F. Yan, and M. J. Chang, "Photovoltaic concentrator using a holographic optical element," Appl. Opt. 27, 3556-3560 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-16-3556

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