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Design of vibrating wire alignment system for HEPS-TF 期刊论文  OAI收割
HIGH POWER LASER AND PARTICLE BEAMS, 2015, 卷号: 27, 期号: 9, 页码: 95102
作者:  
Wu L(吴蕾);  Wang XL(王小龙);  Li CH(李春华);  Chen SY(陈素颖);  Qu HM(屈化民)
收藏  |  浏览/下载:35/0  |  提交时间:2016/04/18
Cloning and Expression of a Cytosolic HSP90 Gene in Chlorella vulgaris 期刊论文  OAI收割
BIOMED RESEARCH INTERNATIONAL, 2014, 页码: 487050
作者:  
Liu, Zhengyi;  Zhang, Lei;  Pu, Yang;  Liu, Zhaopu;  Li, Zhiling
收藏  |  浏览/下载:22/0  |  提交时间:2015/07/30
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.  
The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE) 会议论文  OAI收割
Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states
作者:  
Yan F.;  Zhang X.-J.;  Yan F.
收藏  |  浏览/下载:34/0  |  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.