中国科学院机构知识库网格系统: 检索

The special use of ghost image in null testing the large aperture aspherical mirrors 会议论文 OAI收割
Xi'an, China, 2022-12-15
作者: Ji B(季波); Li XN(李新南); Xu C(徐晨)

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收藏 | 浏览/下载：45/0 | 提交时间：2023/03/22

aspherical mirror null testing compensator ghost image adjusting

Null-free False Discovery Rate Control Using Decoy Permutations 期刊论文 OAI收割
ACTA MATHEMATICAE APPLICATAE SINICA-ENGLISH SERIES, 2022, 卷号: 38, 期号: 2, 页码: 235-253
作者: He, Kun; Li, Meng-jie; Fu, Yan; Gong, Fu-zhou

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收藏 | 浏览/下载：43/0 | 提交时间：2022/06/21

multiple testing false discovery rate null distribution-free p-value-free decoy permutations knockoff filter

Null-free False Discovery Rate Control Using Decoy Permutations 期刊论文 OAI收割
ACTA MATHEMATICAE APPLICATAE SINICA-ENGLISH SERIES, 2022, 卷号: 38, 期号: 2, 页码: 235-253
作者: He, Kun; Li, Meng-jie; Fu, Yan; Gong, Fu-zhou; Sun, Xiao-ming

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收藏 | 浏览/下载：30/0 | 提交时间：2022/12/07

multiple testing false discovery rate null distribution-free p-value-free decoy permutations knockoff filter

ADMISSIBLE WAYS OF MERGING P-VALUES UNDER ARBITRARY DEPENDENCE 期刊论文 OAI收割
ANNALS OF STATISTICS, 2022, 卷号: 50, 期号: 1, 页码: 351-375
作者: Vovk, Vladimir; Wang, Bin; Wang, Ruodu

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收藏 | 浏览/下载：42/0 | 提交时间：2022/04/29

Multiple hypothesis testing global null duality admissible decisions e-values

Experimental study on subaperture stitching testing of convex hyperboloid surface 期刊论文 OAI收割
Optics Communications, 2018, 卷号: 428, 页码: 104-109
作者: Zhu, D. Y.; Yan, L. S.; Wang, X. K.; Li, M.; Ma, D. L.

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收藏 | 浏览/下载：15/0 | 提交时间：2019/09/17

Interferometry Convex aspheric surfaces Stitching Non-null testing retrace error-correction aspheric surfaces large flat algorithm reconstruction Optics

The optical design of cubic phase plate testing system (EI CONFERENCE) 会议论文 OAI收割
2011 Symposium on Photonics and Optoelectronics, SOPO 2011, May 16, 2011 - May 18, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Zhang X.; Zhang Y.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

Computer-generated holograms (CGH) have been widely used for years in optical testing of aspheric surfaces in combination with Fizeau interferometers. With the development of diffraction optics computer technology and micro-processing technology the accuracy of the CGH testing can achieve a hundredth of a wave and the cost is reduced greatly. CGH is capable of producing an optical wavefront with any desired shape. So it is fascinating and will have good prospects to test free-form surfaces using CGH. As the CGH can create any wavefront shape it can also be used in unsymmetrical aspherical surfaces testing. Taking the cubic surface as an example this paper gives a method to test unsymmetrical surfaces. This paper gives the design to test a cubic surface. And the separation of the diffraction orders and the binary process of the continuous CGH phase function are discussed in detail. The alignment tolerance of the test system and the CGH fabrication tolerance are analyzed. We also present an idea using a CGH and two spherical lenses as null lens to test the cubic surface when the surface deviation is great. 2011 IEEE.

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：43/0 | 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.

Test of an off-axis asphere by subaperture stitching interferometry (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Zheng L.-G.

收藏 | 浏览/下载：65/0 | 提交时间：2013/03/25

A new method combined subaperture stitching with interferometry(SSI) is introduced. It can test large and off-axis aspheric surfaces without the aid of other null optics. In this paper the basic principle and theory of the technique are analyzed. The synthetical optimization stitching model and effective stitching algorithm are established based on homogeneous coordinates transformation and simultaneous least-squares method. The software of SSI is devised and the prototype for testing of large aspheres by SSI is designed and developed. An off-axis asphere with the aperture of 376mm188mm is tested by this method. For comparison and validation and the difference of PV and RMS error between them is 0.047 e and 0.006 e the asphere is also tested by null compensation.The synthesized surface profile is consistent to that ofthe entire surface from null test respectively. So it provides another quantitative measurement for testing large aspheric surfaces and off-axis aspheres besides null-compensation. 2009 SPIE.

Design and tolerance analysis of compensator for high order aspheric surface testing (EI CONFERENCE) 会议论文 OAI收割
2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China
作者: Chen X.; Liu W.; Chen X.; Chen X.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

High accuracy is required in surface testing of 90nm nodal point lithography projecting lens. By comparing various aspheric surface testing methods the structure layout of the compensator is a meniscus positive lens combined with a Plano-convex positive lens. The design results indicate that: primary and high order aberrations are balanced well we adopt Offner null compensator to test the aspheric surface in the point diffraction interferometer at last. In this paper MTF exceeds diffraction limit an Offner compensator is presented on the base of the third order aberration theory to test concave aspheric surface root-mean-square (RMS) of wave front error /167. The F-number of the system can achieve F/1.64. By the analysis of the process of aspheric surface testing with the designed system the optical construction parameters of which is determined by introducing equal-quantities spherical aberration to compensate all orders of aspheric coefficients. The field of view of the system is 0.02 a loosen distribution of the tolerance was presented based on the accuracy of measuring apparatus. 2009 SPIE.

Computer aided alignment for off-axis asphere null test (EI CONFERENCE) 会议论文 OAI收割
Optical Design and Testing II, November 8, 2004 - November 11, 2004, Beijing, United states
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

The method of null test is widely used for testing an aspheric mirror. During optical manufacturing process the mirror has to be moved up and down for testing and fabricating. Because the alignment of null test is difficult and time costing the efficiency of making aspheric mirror is decreased greatly. In order to solve the problem we developed a software based on polynomial fitting to calculate the misalignment parameters. By using the software and computer numeric controlled adjusting equipments the efficiency of testing is increased and the accuracy of test has reached up to /40 RMS where equals to 632.8nm which has fulfilled the demand of the designer.