Title: High concentration and homogenized Fresnel lens without secondary optics element
Authors: Pan, Jui-Wen
Huang, Jiun-Yang
Wang, Chih-Ming
Hong, Hwen-Fen
Liang, Yi-Ping
Institute of Photonic System
Keywords: Fresnel lens;Secondary optics element;Acceptance angle;F-number;Uniformity
Issue Date: 1-Sep-2011
Abstract: In this paper, we design a single concentrator to homogenize and concentrate the solar energy. The proposed concentrator only consisted of an array of refraction prisms. In order to homogenize the irradiance, all pitches of the Fresnel concentrator focus on the different position of the receiver. Finally, the Fresnel lens that achieves the uniformity of U is 14.6. An acceptance angle of 0.305 degrees is achieved without using additional secondary optics. Full Width at Half Maximum (FWHM) of illumination distribution is 1.4 mm. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optcom.2011.06.019
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2011.06.019
Volume: 284
Issue: 19
Begin Page: 4283
End Page: 4288
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