Share Email Print
cover

Proceedings Paper

Design of compound Fresnel-R lenses for new high-efficient concentrator
Author(s): Lei Jing; Hua Liu; Zhenwu Lu; Huifu Zhao
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A new design of compound Fresnel-R concentrator is presented which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer facets but refraction at inner facets, and a secondary lens that works by refraction. In contrast to previous Fresnel lens concentrator, this design increases the acceptance angle, improves the irradiance uniformity on the solar cell, and reduces the aspect ratio significantly. Another outstanding advantage of this concentrator is the fact that it mainly works by performing total internal reflection, reducing chromatic dependence as well as Fresnel losses. An optical efficiency more than 80% can be achieved. Moreover, in order to reduce the influence of manufacture accuracy and to increase the optical efficiency further, the central part of the bottom of the secondary lens which directly adhered to the solar cell is designed as a cone-shaped prism to collect the sunlight that doesn't reach the solar cell.

Paper Details

Date Published: 19 August 2010
PDF: 10 pages
Proc. SPIE 7785, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, 77850K (19 August 2010); doi: 10.1117/12.859441
Show Author Affiliations
Lei Jing, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Hua Liu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Zhenwu Lu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Huifu Zhao, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 7785:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII
Roland Winston; Jeffrey M. Gordon, Editor(s)

© SPIE. Terms of Use
Back to Top