[8] Chen B. Study on ceramic copper cladding based on high power LED[D]. Hangzhou: Zhejiang University, 52-56(2017).
[9] Chen Z M. Study on concentration performance of Fresnel lens[D]. Hangzhou: China Jiliang University, 12-15(2013).
[11] Koshel R J, Koshel R J[M]. 照明工程: 非成像光学设计, 30-35(2015).
[M]. Illumination engineering: Design with nonimaging optics, 30-35(2015).