外文题目: Error analysis of standard wave-front reconstruction based on spatial light modulator
作者: MaXiao; Liu Shijie; Zhang Zhigang; Shao Jianda
刊名: Proc.SPIE
来源图书: OPTICAL MEASUREMENT TECHNOLOGY AND INSTRUMENTATION
年: 2016 卷: 10155 文章编号：101553M
会议名称: International Symposium on Optical Measurement Technology and Instrumentation
英文关键词:
CGH; SLM; wave-front reconstruction; Fourier-optics; pixel-structure
英文摘要:
The invention of spatial light modulator (SLM) promotes the development of aspheric surface test. SLM has the advantage of real-time and low-cost in comparison with the etching computer-generated hologram(CGH) plate. The pixel-structure of SLM, which includes the pixel pitch, gray-level number and black matrix, has great significance on the reconstructed wave-front quality. In this paper, the effects of SLM pixel pitch, gray-level number and black matrix are analyzed by Fresnel diffraction theory and computer simulation. In the simulation, a concave spherical wave-front with a radius of 1000 mm is generated by the SLM with different pixel pitch, gray-level numbers and aperture ratios, respectively. The results show that the quality of the reconstructed wave-front gets poorer as the pixel pitch increases, the gray-level number decreases or the aperture ratio reduces. This work can guide the selection of the SLM in the aspheric surface test.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2247407


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