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	Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror 期刊论文 OAI收割 PHOTONICS, 2023, 卷号: 10, 期号: 7 作者: Huang, Cheng; Li, Jinpeng; Cai, Zhaohan; Yu, Jiadong; Xie, Yongjun \| 收藏 \| 浏览/下载：17/0 \| 提交时间：2023/08/18 large-aperture optical system low-precision primary mirror freeform compensation pose compensation nodal aberration theory
	Residual aberration correction method of the three-mirror anastigmat (TMA) system with a real exit pupil using freeform surface 期刊论文 OAI收割 Optics and Laser Technology, 2018, 卷号: 106, 页码: 100-106 作者: Meng, Q. Y.; Wang, H. Y.; Yan, Z. Q. \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2019/09/17 Geometric optical design Optical freeform surface Mirror system design Aberration compensation front fog lamp design method telescope field integration mirror Optics Physics
	Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文 OAI收割 Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states 作者: Zhang F.; Wang L.; Wang L.; Wang L.; He X. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 Freeform surfaces provide more degrees of freedom for design of optical systems and enhance the ability of compensation and correction aberrations. Freeform surfaces are of advantage to balance the unsymmetrical aberrations especially for the wide-field off-axis optical systems. This paper focus on an off-axis reflective optical system which focal length is 550mm F# is 6.5 and field of view (FOV) is 76. The system adopts some freeform surfaces. We discuss the problems we noticed in processes of design manufacture measurement and alignment and the solutions. At last the periodical research result and the expected performance are given. 2012 SPIE.
	SSA based decomposition of tool position trajectory for diamond turning of freeform optical surfaces (EI CONFERENCE) 会议论文 OAI收割 2009 International Conference on Manufacturing Science and Engineering, ICMSE 2009, December 26, 2009 - December 28, 2009, Zhuhai, China 作者: Liu Q.; Lin C. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 The radial spiral feed of the tool and the tool nose radius compensation are taken into consideration for the tool position trajectory (TPT) generation in diamond turning of freeform optical surfaces. Using the coarse sampling and the fine interpolation a novel approach based on singular spectrum analysis (SSA) is presented to decompose the generated TPT into a slowly varying trend and a quickly varying quasi-periodic oscillation. The numerical experiments of the TPT decomposition of toroidal surfaces have been carried out. The results verify that the proposed approach is very effective for the TPT decomposition. (2010) Trans Tech Publications.
	Design and fabrication of CGH for aspheric surface testing and its experimental comparison with null lens (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhao J.; Zhang X.; Zhang X.; Zhang X.; Li F. 收藏 \| 浏览/下载：34/0 \| 提交时间：2013/03/25 Computer-generated hologram (CGH) is an effective way to compensate wavefront in null test of aspheric surfaces and freeform surfaces. Our strategies of CGH design and fabrication for optical testing are presented and an experiment demonstrating the compensation results of CGH and null lens is also reported. In order to design complex CGH software was developed with which we can design a CGH including three sections: main section for compensating wavefront in null test alignment section for adjusting the relative position between CGH and interferometer and fiducial section for projecting fiducial marks around the optics under test. The design result is represented in GDS II format file which could drive a laser-direct-writer- machine to fabricate a photomask. Then a 1:1 replication process is applied to duplicate the patterns from photomask to a parallel optical substrate whose surface is error better than /60 rms. Finally an off-axis aspheric surface was tested with CGH and null lens respectively. The test result with CGH (0.019rms) is almost the same as the result with null lens (0.020 rms). This experiment also demonstrated that fiducial marks projected by CGH can be used to guide the alignment of the optics and measurement of its off-axis distance. 2010 Copyright SPIE - The International Society for Optical Engineering.