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CAS IR Grid
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长春光学精密机械与物... [1]
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OAI收割 [1]
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会议论文 [1]
发表日期
2009 [1]
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Test of an off-axis asphere by subaperture stitching interferometry (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者:
Zheng L.-G.
;
Zhang X.-J.
;
Zhang Z.-Y.
;
Zhang Z.-Y.
;
Deng W.-J.
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提交时间:2013/03/25
A new method combined subaperture stitching with interferometry(SSI) is introduced. It can test large and off-axis aspheric surfaces without the aid of other null optics. In this paper the basic principle and theory of the technique are analyzed. The synthetical optimization stitching model and effective stitching algorithm are established based on homogeneous coordinates transformation and simultaneous least-squares method. The software of SSI is devised and the prototype for testing of large aspheres by SSI is designed and developed. An off-axis asphere with the aperture of 376mm188mm is tested by this method. For comparison and validation
and the difference of PV and RMS error between them is 0.047 e and 0.006 e
the asphere is also tested by null compensation.The synthesized surface profile is consistent to that ofthe entire surface from null test
respectively. So it provides another quantitative measurement for testing large aspheric surfaces and off-axis aspheres besides null-compensation. 2009 SPIE.