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Some methods for the fabrication of large diameter off-axis paraboloids
Li Depei; Chen Xiaolian
Source PublicationAdvanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
PagesVol.7654 1O-1-8
Conference Date2010-4-26
Conference PlaceDalian, China
Funding OrganizationThe International Society for Optical Engineering
Off-axis paraboloid is commonly used in optical systems and collimator, its greatest advantage is that no central shelter. Difficulties of manufacture depend on the processing precision of mirror, focal length, aperture size and off-axis. As an asymmetry surface, it is really a hard work to manufacture a surface with an amount of large off-axis, large- diameter, large volume of non-sphere. Here, some of the techniques such as “the way of cutting from master mirrors”, “the way of filling up with sub mirrors”, “the way of polishing sub mirrors directly”, “the way of stretch deformations with stress” are discussed. Finally, some manufactures and results of master mirrors with diameter from 500 millimeters to 2000 millimeters are reported.
KeywordOff-axis Parabolic Surface The Best Fit Sphere The Greatest Volume Of Non-sphere Sagittal Depth
Subject Area天文镜面(材料、加工、检测)
Document Type会议论文
Recommended Citation
GB/T 7714
Li Depei,Chen Xiaolian. Some methods for the fabrication of large diameter off-axis paraboloids[C]:SPIE,2010:Vol.7654 1O-1-8.
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