Overall study of solar simulation optical system with large irradiated surface using free-form concentrator to
Shi Liu1,2, Jierui Zhang1, Yu Zhang1,2
1Key Laboratory of Opto-electronic Measurement and Optical Information Transmission Technology, Ministry of Education, Department of Instrumentation Science and Technology, Changchun University of Science and Technology, Changchun 130022, China.
Abstract:
Large irradiation surface solar simulator often has the problem of low irradiation uniformity. Therefore, a method for designing a large irradiation surface solar simulator with high irradiation uniformity is proposed. According to the law of conservation of energy and the edge-ray principle of non-imaging optics, the free-form surface concentrator is designed and optimized by using the simulated annealing algorithm based on Bessel curve to improve the incident beam uniformity of the integrator. The optical integrator and projection system are also designed and optimized to eliminate aberrations, improve light efficiency, and enlarge the irradiation area. The design is verified using LightTools software and achieves an effective irradiation size of Φ1200 mm with an irradiance of a solar constant and an irradiation uniformity of less than 2.0%. This study provides accurate and reliable solar irradiation for laboratory calibration and performance testing of spacecraft payloads.
