Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor

	Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor
	Yu L.; Xia M. L.; Xie H. S.; Xuan L.; Ma J.
	2014
发表期刊	Journal of Modern Optics
ISSN	ISBN/0950-0340
卷号	61 期号:9 页码:703-715
摘要	As a wavefront sensor, the Shack-Hartmann wavefront sensor plays an important role in the wavefront measurement of human eyes. However, the low measurement accuracy and the small dynamic range of Shack-Hartmann wavefront sensor limit its application. In this paper, we present a matched-filter algorithm to improve the measurement accuracy by more than an order of magnitude. Moreover, we also introduce a new algorithm to extend the dynamic range of Shack-Hartmann wavefront sensor. With this method, the recorded spots of Shack-Hartmann wavefront sensor are not constrained to stay in the corresponding pixel area of the microlens. The result shows that the dynamic range can be extended from 57.1 to 160% for the first 24 items of Zernike wavefronts, respectively. The improvement by our methods makes the Shack-Hartmann more suitable for the measurement of highly aberrated eyes.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44196
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yu L.,Xia M. L.,Xie H. S.,et al. Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor[J]. Journal of Modern Optics,2014,61(9):703-715.
APA	Yu L.,Xia M. L.,Xie H. S.,Xuan L.,&Ma J..(2014).Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor.Journal of Modern Optics,61(9),703-715.
MLA	Yu L.,et al."Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor".Journal of Modern Optics 61.9(2014):703-715.

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