Study of the Tests of Large-aperture and Fast Focal Ratio Convex Hyperboloid Mirrors with a "Stitching"Method

ZENG Jing; LI Xin-nan

Astronomical Research and Technology > 2009 > 6(2): 154-160.

ZENG Jing, LI Xin-nan. Study of the Tests of Large-aperture and Fast Focal Ratio Convex Hyperboloid Mirrors with a "Stitching"Method[J]. Astronomical Research and Technology, 2009, 6(2): 154-160.

Citation:

ZENG Jing, LI Xin-nan. Study of the Tests of Large-aperture and Fast Focal Ratio Convex Hyperboloid Mirrors with a "Stitching"Method[J]. Astronomical Research and Technology, 2009, 6(2): 154-160.

Citation:

ZENG Jing, LI Xin-nan. Study of the Tests of Large-aperture and Fast Focal Ratio Convex Hyperboloid Mirrors with a "Stitching"Method[J]. Astronomical Research and Technology, 2009, 6(2): 154-160.

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Study of the Tests of Large-aperture and Fast Focal Ratio Convex Hyperboloid Mirrors with a "Stitching"Method

ZENG Jing^1,2,
LI Xin-nan¹

1.
National Astronomical Observatories/Nanjing Institute of Astronomical Optical Technology, Chinese Academy of Sciences, Nanjing 210042, China
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

More Information

Received Date: August 21, 2008
Revised Date: October 05, 2008
Published Date: April 14, 2009

Graphical Abstract

Abstract

Abstract

Based on analyzing and comparing conventional testing methods for large-aperture convex aspheric mirrors, a new methodology is proposed to solve the problem of excessively large aperture of the standard spherical mirror which is used in a traditional Hindle test.There are two Hindle tests in this new method:one is used to test the inner zone of a convex mirror, the others is used to test the outer zone.Each test requires a much less aperture of standard mirror as compared to a single Hindle test of the entire convex mirror.The data for the two areas are combined with a suitable algorithm to derive the surface shape of whole mirror"stitching".In this paper, the principle of the method and algorithm of the stitching are discussed.The results of an experiment show the feasibility of the new method.
- optical test,
- large-aperture convex hyperboloid mirror,
- Hindle test,
- stitching algorithm

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References (5)

References

[1]	ANDERSON D S, BURGE J H.Swing-arm profilometry of aspherics[J].SPIE, 1995, 2536:169~179.
[2]	BURGE J H, ANDERSON D S.Full aperture interferometeric test of convex secondary mirrors using holographic test plates[J].SPIE, 1995, 2199:181~192.
[3]	D Malacara.Optical Shop Testing[M].Wiley, New York, 1978.
[4]	A P Semenov, M A Abdulkadyrov, S P Belousov, et al.Manufacturing of secondary mirrors from Sitall CO-115M for European projects TTL, NOA and VST[J].SPIE, 2001, 4451:138~144.
[5]	潘君骅.光学非球面的设计、加工与检验[M].北京:科学出版社, 1994.

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