Systematic error of a large dynamic range aberrometer

Peng Wu; Edward DeHoog; Jim Schwiegerling

doi:10.1364/AO.48.006376

Systematic error of a large dynamic range aberrometer

Peng Wu, Edward DeHoog, Jim Schwiegerling

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Shack-Hartmann aberrometers are routinely used for measuring ocular aberrations. In one configuration, the intermediate images of the Shack-Hartmann spots formed by the lenslet array are relayed by an imaging lens onto a sensor. A systematic introduction of spherical aberration that is strongly related to the power error (defocus) of the incident wavefront is observed in this configuration. We found that the largest component of this error is induced by the pupil aberration of the imaging relay lens. Some simulations and experimental results are demonstrated.

Original language	English (US)
Pages (from-to)	6376-6380
Number of pages	5
Journal	Applied optics
Volume	48
Issue number	32
DOIs	https://doi.org/10.1364/AO.48.006376
State	Published - Nov 10 2009

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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Systematic error of a large dynamic range aberrometer

Abstract

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