Fringe discretization and manufacturing analysis of a computer-generated hologram in a null test of the freeform surface

被引：14
|
作者：
Gan, Zi-Hao [1 ,2 ]
Peng, Xiao-Qiang [1 ,2 ]
Chen, Shan-Yong [1 ,2 ]
Guan, Chao-Liang [1 ,2 ]
Hu, Hao [1 ,2 ]
Li, Xin-Lei [1 ,2 ]
Dai, Zuo-Cai [1 ,2 ]
机构：
[1] Natl Univ Def Technol, Lab Sci & Technol Integrated Logist Support, De Ya Rd, Changsha 410073, Hunan, Peoples R China
[2] Hunan Key Lab Ultraprecis Machining Technol, Changsha 410073, Hunan, Peoples R China
来源：
APPLIED OPTICS | 2018年 / 57卷 / 34期
关键词：
FABRICATION; DESIGN;
D O I：
10.1364/AO.57.009913
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A computer-generated hologram (CGH) is the core component for an aspheric surface test. According to fabrication demands, it is necessary to convert the designed CGH phase compensation function into the processed pattern, that is, the fringe discretization process. In this paper, we propose a new discretization method for a CGH in a test of the freeform surface, and realized the encoding of processed fringes by MATLAB software. Furthermore, we designed the experiment to verify the accuracy of the new discretization method and compared the calculation efficiency between the new algorithm and the reported algorithm. Finally, based on the testing requirement of a freeform mirror in a camera optical system, we completed the design, encoding, and fabrication of the CGH sample, and analyzed the influence of various errors on wavefront accuracy of the CGH. (C) 2018 Optical Society of America
引用
收藏
页码：9913 / 9921
页数：9
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