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Approach to the deviation representation of non-ideal cylindrical surfaces based on the curvilinear coordinate system 会议论文
14TH CIRP CAT 2016 - CIRP CONFERENCE ON COMPUTER AIDED TOLERANCING, 2016-01-01
作者:  Qiao, Lihong;  Wu, Jianshun;  Zhu, Zuowei;  Cui, Yapeng
收藏  |  浏览/下载：9/0  |  提交时间：2019/12/30
Dynamic compensation for the lithographic object lens 会议论文
Proceedings of SPIE: Optical System Alignment, Tolerancing, and Verification VIII, 2014
作者:  Zhu, Hongwei;  Xing, Tingwen;  Chen, Zexiang
收藏  |  浏览/下载：16/0  |  提交时间：2016/11/23
Opt-mechanical and thermal integrated analysis of a new cryogenic refractometer 会议论文
Proceedings of SPIE: Optical System Alignment, Tolerancing, and Verification VI, 2012
作者:  Ni, Lei;  Ren, Qi-Feng;  Liao, Sheng;  Xing, Ting-Wen
收藏  |  浏览/下载：8/0  |  提交时间：2016/11/23
A Comprehensive Tolerancing System for 3D Mechanical Assemblies 会议论文
作者:  Yang, Dongya;  Gong, Jun
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/15
基于向量环尺寸链模型的公差分析 期刊论文
2010, 2010
王会卿; 肖田元; 张林鍹; Wang Huiqing; Xiao Tianyuan; Zhang Linxuan
收藏  |  浏览/下载：2/0
A comprehensive tolerancing system for 3D mechanical assemblies 会议论文
Guangzhou, China, December 7, 2010 - December 9, 2010
作者:  Yang, Dongya;  Gong, Jun
收藏  |  浏览/下载：0/0  |  提交时间：2020/11/15
The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE) 会议论文
Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states
Yan F.; Zhang X.-J.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
The wavefront coding technology is known as a system-level technology which can extend the depth of focus of optical system by innovative optical design and image restoration. This technology can control misfocus related aberrations including misfocus  astigmatism  and Petzval curvature  temperature-related misfocus in digital imaging systems. It can also help optical system tolerate more residual error in optical manufacturing and alignment besides misfocus. The brief introduction of wavefront coding technology and the wavefront coded TMA system under research is presented respectively in part 1 and part 2. The "MTF similarity" is defined to describe the relationship among MTF at different position or different fields in the third part. It is also shown in this part that the MTF similarity of wavefront coded system is much higher than the normal system within a large range. In part 4 comparison between the origin system and the new system with wavefront coding technology is provided after multiple errors are introduced  from which it can be observed that the system with wavefront coding technology can tolerate much bigger error than origin system. The error tolerance is re-distributed according to a new criterion based on MTF similarity. If the MTF similarity is less than a certain value  it can be regarded that the system can tolerate the residual error. The new error tolerance is displayed and it is shown that the wavefront coding technology can also loosen the error distributing besides extended the depth of focus.  

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