利用Offner光学系统进行图像恢复和光学检测

明名; 吕天宇; 邵亮; 王斌

doi:10.3788/CO.20120506.0646

Volume 5 Issue 6

Dec. 2012

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Chinese Optics > 2012 > 5(6): 646-651.

MING Ming, LV Tian-yu, SHAO Liang, WANG Bin. Image restoration and optical test by using Offner optical system[J]. Chinese Optics, 2012, 5(6): 646-651. doi: 10.3788/CO.20120506.0646

Citation:

MING Ming, LV Tian-yu, SHAO Liang, WANG Bin. Image restoration and optical test by using Offner optical system[J]. Chinese Optics, 2012, 5(6): 646-651. doi: 10.3788/CO.20120506.0646

MING Ming, LV Tian-yu, SHAO Liang, WANG Bin. Image restoration and optical test by using Offner optical system[J]. Chinese Optics, 2012, 5(6): 646-651. doi: 10.3788/CO.20120506.0646

Citation:

MING Ming, LV Tian-yu, SHAO Liang, WANG Bin. Image restoration and optical test by using Offner optical system[J]. Chinese Optics, 2012, 5(6): 646-651. doi: 10.3788/CO.20120506.0646

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Image restoration and optical test by using Offner optical system

doi: 10.3788/CO.20120506.0646

Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033,China

Received Date: 12 Sep 2012
Rev Recd Date: 15 Nov 2012
Publish Date: 10 Dec 2012

Abstract

Abstract

Based on phase diversity technology, this paper designs an Offner optical system for image restoration and optical test of wavefront errors. The Offner optical system uses an on-axis parabolic mirror as Offner mirror, and a high speed CCD camera and a Shack-Hartmann wavefront sensor as the receivers to eliminate the chromatic aberration brought by the polychrome light source of the refractive system during image restoration. The system has a simple configuration with the wavefront error(RMS) less than /50(=632.8 nm). By using the system to perform image restoration experiment for a resolution plate and a fiber source, the resolution of restorated image is improved by 19%. In addition, wavefront error test are performed with the Offner optical system using the phase diversity algorithm, and the result demonstrates that the wavefront sensor difference between phase diversity and Shack-Hartmann is 5%, which proves that it is able to perform optical wavefront test with this Offner optical system.
- Offner system,
- optical design,
- image restoration,
- optical test,
- ground-based telescope

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References

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