中国科学院机构知识库网格系统: 检索

A new off-axis Gregorian mechanical structure and its alignment method 会议论文 OAI收割
Shanghai, China, 2021-10-28
作者: Fu, Xing; Lei, Yu; Cao, Mingqiang; Yin, Yamei

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收藏 | 浏览/下载：28/0 | 提交时间：2022/03/18

Off-axis Optical System Alignment Zernike Coefficients Sensitivity Matrix

Design of image-side telecentric off-axis three-mirror anastigmatic systems based on the coaxial parent mirrors 期刊论文 OAI收割
Optik, 2021, 卷号: 241
作者: Li, Xijie; Zou, Chunbo; Yang, Jiating

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收藏 | 浏览/下载：40/0 | 提交时间：2021/05/24

Optical system design Anastigmatism design method Coaxial parent mirrors Off-axis anastigmatism balance conditions

Application of machine learning in the alignment of off-Axis optical system 会议论文 OAI收割
Beijing, China, 2021-06-20
作者: Yu, Lei; Ma, Caiwen; Fu, Xing; Yin, Yamei; Cao, Mingqiang

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收藏 | 浏览/下载：18/0 | 提交时间：2022/01/30

Off-axis Optical System Alignment Machine Learning Neural Network

Misalignment induced aberration off-axis optical system 会议论文 OAI收割
8th international symposium on advanced optical manufacturing and testing technologies - large mirrors and telescopes, suzhou, peoples r china, 2016-04-26
作者: Pang Zhihai; Fan Xuewu; Ma Zhen; Zou Gangyi

收藏 | 浏览/下载：31/0 | 提交时间：2016/12/09

Nodal aberration off-axis optical system Pupil vector misaligned off-axis optical system

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：32/0 | 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.

Novel method for optimizing polishing tool-path in CCOS based on weighted-iterative algorithm (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Zhang X.-J.; Wang X.; Wang X.; Wang X.; Wang X.-K.

收藏 | 浏览/下载：39/0 | 提交时间：2013/03/25

In Computer Controlled Optical Surfacing (CCOS) polishing tool-path is the base of solving other control parameters such as dwell time. In order to improve the fabrication results of polishing off-axis aspheric a novel method to optimize the tool-path is discussed in this paper. The optimizing method named weighted-iterative algorithm is according to the balance principle of the particle system. The power factor of each dwell point represents the requirement of dwell density. Considering the factors which influence the polishing result the power factors cosist of three elements include constant error distribution and dwell distance of workpiece edge. The tool-path is solved by numerical iterative method. In the end an error data is simulated with actual parameters using the matrix-based algorithm with two different tool-paths. The one is X-Y uniform spacing model and the other one is to optimize it based on the first. The comparison shows that the results of the optimized one are much better than traditional one especially the rms convergence rate. Theory of the algorithm is simple and exercisable and it satisfies practical requirement as well. 2009 SPIE.

Optical design of reflecting telescope with large field (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Gong D.; Tian T.-Y.; Wang H.; Wang H.; Wang H.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

Reflecting telescopes have been widely used for many outstanding advantages. But the field of a common reflecting system is too small to meet the needs nowadays. When a correcting lens is inserted at the rear of R-C system the off-axis image quality is significantly improved. After optimizing with CODE V optical design software a new design scheme of reflecting telescope with large field of view is achieved. 2009 SPIE.

Broadband and wide field of view foveated imaging system in space 期刊论文 OAI收割
optical engineering, 2008, 卷号: 47, 期号: 10, 页码: 103202
作者: Zhao, Xiaoxia; Xie, Yongjun; Zhao, Wei

收藏 | 浏览/下载：13/0 | 提交时间：2011/09/30

aberration compensation optical systems design three-mirror off-axis optical system microelectromechanical system deformable mirrors

Optical system design with high resolution and large field of view for the remote sensor (EI CONFERENCE) 会议论文 OAI收割
Chang J.; Weng Z.-C.; Wang Y.-T.; Cheng D.-W.; Jiang H.-L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

In this paper we are presenting a design method and its results for a space optical system with high resolution and wide field of view. This optical system can be used both in infrared and visible configurations. The designing of this system is based on an on-axis three-mirror anastigmatic (TMA) system. Here the on-axis concept allows wide field of view (FOV) enabling a diversity of designs available for the Multi-Object Spectrometer instruments optimized for low scattered and low emissive light. The available FOVs are upto 1 in both spectrum ranges whereas the available aperture range is F/15 - F/10. The final optical system is a three-mirror telescope with two on-axis and one off-axis segment and its resolution is 0.3m or even lower. The distinguished feature of this design is that it maintains diffraction-limited image at wide wavelengths. The technological developments in the field of computer generated shaping of large-sized optical surface details with diffraction-limited imagery have opened new avenues towards the designing techniques. Such techniques permit us to expand these technological opportunities to fabricate the aspherical off-axis mirrors for a complex configuration.

Method for computer-aided alignment of complex optical system (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
作者: Yu J.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

For making complex optical system meet the design requirement such as the space camera used in remote sensing and UVX lithophotography especially for off-axis all-reflecting optical system alignment technology is so necessary. In this paper a method is presented. Based on the ideas of linearity instead of non-linearity and difference quotient instead of differential quotient a mathematical model for computer-aided alignment is proposed. This model included the characteristics of the optical system wavefront difference of its exit pupil and its misalignment of the misaligned optical system. Then comparing self-compiled software with alignment package of CODE V as a result this self-compiled software is much more valid than alignment package of CODE V. For a large aperture long focal length and off-axis three-mirror optical system computer-aided alignment is successful. Finally the wavefront error of the middle field is 0.094 waves RMS and the wavefront error of +0.7 field is 0.106 waves RMS and the wavefront error of -0.7 field is 0.125 waves RMS at =632.8nm are obtained.