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Application of square-stacked Fresnel zone plate in Cassegrain concentrator

S. LI1,* , H. YANG1, P. JIANG1, W. CAIYANG1, F. XU1


  1. School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China


Due to the secondary mirror blockage of Cassegrain Concentrator , the energy distribution of the Cassegrain Concentrator is not uniform, which will influence on the lifetime of the photovoltaic (PV) receiver. A square-stacked Fresnel zone plate is designed in this paper, which is applied to the square Cassegrain Concentrator at the primary mirror open position, eliminating the central dark area and obtaining a uniform square spot that is suitable for a square PV receiver. The simulation results show that the spot uniformity can reach up to 84.56%.This research result possesses potential application value in solar collectors..


Fresnel zone plate, Cassegrain concentrator, spot uniformity.

Submitted at: May 10, 2018
Accepted at: Nov. 29, 2018


S. LI, H. YANG, P. JIANG, W. CAIYANG, F. XU, Application of square-stacked Fresnel zone plate in Cassegrain concentrator, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 11-12, pp. 575-580 (2018)