Some methods for the fabrication of large diameter off-axis paraboloids | |
Li Depei; Chen Xiaolian | |
2010-10-13 | |
Source Publication | Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes |
Volume | 7654 |
Issue | 7654 |
Pages | Vol.7654 1O-1-8 |
Conference Date | 2010-4-26 |
Conference Place | Dalian, China |
Funding Organization | The International Society for Optical Engineering |
Publisher | SPIE |
Abstract |
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. |
Keyword | Off-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 |
Identifier | http://ir.niaot.ac.cn/handle/114a32/599 |
Collection | 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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