1 February 2002 Experimental results for expanding the dynamic range of a Shack-Hartmann sensor by using astigmatic microlenses
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Optical Engineering, 41(2), (2002). doi:10.1117/1.1430724
Abstract
A conventional Shack-Hartmann wavefront sensor cannot be used for the measurement of wavefronts with steep slopes if the spots leave their respective subapertures. In an earlier paper [N. Lindlein, J. Pfund, and J. Schwider, ''Expansion of the dynamic range of a Shack- Hartmann sensor by using astigmatic microlenses," Opt. Eng. 39(8), 2220-2225 (2000)], we described a method to expand the dynamic range of a Shack-Hartmann wavefront sensor by marking the spots using astigmatic microlenses. We present experimental results for this method and describe how this special sensor can be interpreted as a combination of several Shack-Hartmann sensors with enlarged subapertures.
Norbert Lindlein, Johannes Pfund, "Experimental results for expanding the dynamic range of a Shack-Hartmann sensor by using astigmatic microlenses," Optical Engineering 41(2), (1 February 2002). http://dx.doi.org/10.1117/1.1430724
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KEYWORDS
Sensors

Microlens

Wavefront sensors

Wavefronts

Microlens array

Interferometry

Optical engineering

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