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Test of vertex radius and conic constant of a conic surface by means of interferometry
Wu Gaofeng; Chen Qiang; Xi Hou
Volume7283
2009
Language英语
Indexed ByEi
Subtype会议论文
AbstractThe vertex radius of conic (vertex ROC) and conic constant (CC) are important shape parameters for conic surface. An interferometric method that can determine these two parameters by comparing the sub-surface with a spherical reference wavefront equal to local sagittal, medial or tangential ROC is introduced in detail. The measured wavefront aberrations, particularly astigmatism and coma, and local radius difference are used to calculate vertex ROC and CC. The influence factors on measurement accuracy are analyzed and an effective method for reducing such influences is also presented. According to the mathematic model, the programs to simulate the test results numerically are compiled by Matlab.; The vertex radius of conic (vertex ROC) and conic constant (CC) are important shape parameters for conic surface. An interferometric method that can determine these two parameters by comparing the sub-surface with a spherical reference wavefront equal to local sagittal, medial or tangential ROC is introduced in detail. The measured wavefront aberrations, particularly astigmatism and coma, and local radius difference are used to calculate vertex ROC and CC. The influence factors on measurement accuracy are analyzed and an effective method for reducing such influences is also presented. According to the mathematic model, the programs to simulate the test results numerically are compiled by Matlab.
Conference NameProceedings of SPIE
Conference Date2009
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7556
Collection先光中心
Corresponding AuthorWu Gaofeng
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
Wu Gaofeng,Chen Qiang,Xi Hou. Test of vertex radius and conic constant of a conic surface by means of interferometry[C],2009.
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