中国科学院光电技术研究所机构知识库
Advanced  
IOE OpenIR  > 自适应光学技术研究室(八室)  > 会议论文
题名:
Application of a white-light interferometric measuring system as co-phasing the segmented primary mirrors of the high-aperture telescope - art. no. 683420
作者: Song, HL ; Li, HL ; Xian, H ; et al.
出版日期: 2008
会议名称: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
学科分类: 自适应光学
中文摘要: For the optical system of the telescope, with the increase in telescope size, the manufacture of monolithic primary becomes increasingly difficult. Instead, the use of segmented mirrors, where many individual mirrors (the segments) work together to provide an image quality and an aperture equivalent to that of a large monolithic mirror, is considered a more appropriate strategy. But with the introduction of the large telescope mirror comprised of many individual segments, the problem of insuring a smooth continuous mirror surface (co-phased mirrors) becomes critical. One of the main problems is the measurement of the vertical displacement between the individual segments (piston error), for such mirrors, the segment vertical misalignment (piston error) between the segments must be reduced to a small fraction of the wavelength (<100nm) of the incoming light. The measurements become especially complicated when the piston error is in order of wavelength fractions. To meet the performance capabilities, a novel method for phasing the segmented mirrors optics system is described. The phasing method is based on a high-aperture Michelson interferometer. The use of an interferometric technique allows the measuring of segment misalignment during the daytime with high accuracy, which is a major design guideline. The innovation introduced in the optical design of the interferometer is the simultaneous use of monochromatic light and multiwavelength combination white-light source in a direct method for improving the central fringe identification in the white-light interferometric phasing system. With theoretic analysis, we find that this multiwavelength combination technique can greatly increase the visibility difference between the central fringe and its adjacent side fringes, and thus it offers an increased signal resolution. So make the central fringe identification become easier, and enhance the measure precision of the segment phasing error. Consequently, it is suitable for high-precision measurement purpose and application in the segment piston error phasing system. The description about the expected interferograms and the feasibility of the phasing method are presented here.
收录类别: Ei
语种: 英语
卷号: 6834
ISSN号: 0361-0770
文章类型: 会议论文
页码: 83420-83420
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1839
Appears in Collections:自适应光学技术研究室(八室)_会议论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2008-017.pdf(346KB)----限制开放View 联系获取全文

Recommended Citation:
Song, HL,Li, HL,Xian, H,et al. Application of a white-light interferometric measuring system as co-phasing the segmented primary mirrors of the high-aperture telescope - art. no. 683420[C]. 见:PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE).
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Song, HL]'s Articles
[Li, HL]'s Articles
[Xian, H]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Song, HL]‘s Articles
[Li, HL]‘s Articles
[Xian, H]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2008-017.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院光电技术研究所 - Feedback
Powered by CSpace