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	Random two-step phase shifting interferometry based on Lissajous ellipse fitting and least squares technologies 期刊论文 OAI收割 Optics Express, 2018, 卷号: 26, 期号: 12, 页码: 15059-15072 作者: Zhang, Y.; Tian, X. B.; Liang, R. G. \| 收藏 \| 浏览/下载：18/0 \| 提交时间：2019/09/17 wave-front reconstruction testing optical-surfaces iterative algorithm extraction interferograms vibration errors steps Optics
	A new algorithm for solving the best-fit sphere of optical aspherical surface (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Advances in Materials and Manufacturing, ICAMMP 2011, December 16, 2011 - December 18, 2011, Guilin, China 作者: Lin J.; Lu M. 收藏 \| 浏览/下载：40/0 \| 提交时间：2013/03/25 To solve the best-fit sphere (BFS) accurately is one of the technological keys for the generating and testing of optical aspherical surfaces. This paper presents a new algorithm for solving the BFS of aspherical surfaces to suppress some deficiencies in the existing BFS algorithms. In the proposed approach it is not only suitable for the conic surface a BFS is constructed but also for higher order aspheres. The obtained asphericity and material removal function is more suitable for the machining and test. (2012) Trans Tech Publications which passes through both sides of endpoints in the section o -?xy of the aspherical surfaces Switzerland. the center of the BFS is shifted along the x-axis and its radius of curvature is automatically computed. The variable step size method is proposed to speed up the convergence of the iteration. Through numerically solving the BFS of conic and cubic surface the advantages of the proposed approach are verified. The results show that the proposed approach is of rapid convergence and high accuracy
	The design of computer-generated holograms for testing unsymmetrical optical surfaces (EI CONFERENCE) 会议论文 OAI收割 2012 International Symposium on Photonics and Optoelectronics, SOPO 2012, May 21, 2012 - May 23, 2012, Shanghai, China 作者: Zhang X.; Zhang Y.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 It is a technical difficulty to test the unsymmtrical optical surfaces in non-contact methods. But we can do it using computer-generated holograms (CGH). The principle and design of the CGH have been discussed in the paper. Take the cubic suface as an example The order separation of the CGH is analyzed theoretically and the simulation result of the order separation is given in the paper. We develop the binary process of the continuous CGH phase function and get the sample of the amplitude CGH. A CGH for testing a cubic phase plate with duty cycle 0.5 is fabricated by using e-beam lithographic techniques. In this situation the contrast of the interference fringe pattern can achieve a level of 99.4% by calculation. 2012 IEEE.
	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：19/0 \| 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：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.
	Measurement of the Muller matrix for painted surfaces with a kind of scatterometer 会议论文 OAI收割 ., 2010-04-26 Feng,Weiwei; Wei,Qingnong; Chen,Lingxin \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2011/07/22 Discrete Fourier Transforms Light Manufacture Measurement Theory Meteorological Instruments Optical Testing Polarization Reflection Rotation Surfaces Technology
	Investigation of the precision of curved surface fitting in the measurement of near-cylindrical surfaces' mid-wavelength deformations 期刊论文 iSwitch采集 Acta physica sinica, 2005, 卷号: 54, 期号: 7, 页码: 3144-3148 作者: Xie, BC; Lu, ZW; Li, FY 收藏 \| 浏览/下载：28/0 \| 提交时间：2019/05/10 Optical testing Near-cylindrical surfaces Curved surface fitting
	Aspheric surface testing with a liquid compensatory interferometer 期刊论文 OAI收割 optical engineering, 1998, 卷号: 37, 期号: 4, 页码: 1364-1367 作者: Yun, ZS; Liu, ZB; Li, YL 收藏 \| 浏览/下载：125/28 \| 提交时间：2010/01/12 aspheric surfaces optical testing interferometry