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Proceedings Paper

Effect of lenslet resolution on the accuracy of ocular wavefront measurements
Author(s): Daniel R. Neal; Daniel M. Topa; James Copland
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Paper Abstract

The most critical element in a ocular Shack-Hartmann wavefront sensor is the micro-optic lenslet array. This array largely determines the accuracy of the wavefront measurement and the dynamic range of the measurements. This paper discusses the details of how the density of the lenslet array affects the accuracy of the wavefront measurement. We briefly discuss wavefront reconstruction, which is the mathematical process that takes the output from the lenslet array and reconstructs the input wavefront. We compare the two primary methods of reconstruction, the zonal fit and the modal fit. We also show how a denser array can be designed to have a better dynamic range.

Paper Details

Date Published: 7 June 2001
PDF: 14 pages
Proc. SPIE 4245, Ophthalmic Technologies XI, (7 June 2001); doi: 10.1117/12.429285
Show Author Affiliations
Daniel R. Neal, WaveFront Sciences, Inc. (United States)
Daniel M. Topa, WaveFront Sciences, Inc. (United States)
James Copland, WaveFront Sciences, Inc. (United States)


Published in SPIE Proceedings Vol. 4245:
Ophthalmic Technologies XI
Fabrice Manns; Per G. Soederberg; Arthur Ho, Editor(s)

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