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Investigation of Sub-aperture Polish Techniques for Manufacturing Astronomical Mirror
Zheng Yi; Li Xin-nan; Guo Wei-yuan; Dong Zhi-chuan; Liang Bin; Jiang Zi-bo
Source PublicationModern Technologies in Space- and Ground-based Telescopes and Instrumentation
PagesVol.7739 0E-1-8
Conference Date2010-6-27
Conference PlaceSan Diego, California, USA
Funding OrganizationThe International Society for Optical Engineering
Nanjing Institute of Astronomical Optics & Technology (NIAOT) is investigating two types of sub-aperture polish technique for manufacturing aspheric components in large astronomical telescopes. One technique is computer controlled optical surfacing (CCOS). It removes material by a small polish tool through traditional mechanical and
chemical process. The other is ion beam figuring (IBF) technique. It employs a neutralized ion beam to physically sputter material form optical surface. Although the basic mechanism of the two techniques is different, they true share the same mathematical model and fabrication diagram which will be put forward firstly in this paper. Then tool design and material removal function in CCOS will be studied following by a fabrication instance using CCOS. After that some recent progresses achieved in IBF is presented. The last part will focus on the complementary relationship of CCOS and
IBF. Using them alternatively optimal combination of surface precision, efficiency and edge control could be obtained. Simulation is provided to support this view and experiment will be done in near future.
KeywordAspheric Mirror Optical Manufacture Computer Control Optical Surface Ion Beam Figuring
Subject Area天文镜面(材料、加工、检测)
Document Type会议论文
Recommended Citation
GB/T 7714
Zheng Yi,Li Xin-nan,Guo Wei-yuan,et al. Investigation of Sub-aperture Polish Techniques for Manufacturing Astronomical Mirror[C]:SPIE,2010:Vol.7739 0E-1-8.
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