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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 1 — Jan. 3, 2011

Statistical error of a compact high-resolution Shack–Hartmann wavefront sensor with a discrete detector array

Andre Fleck and Vasudevan Lakshminarayanan  »View Author Affiliations

Applied Optics, Vol. 49, Issue 31, pp. G136-G139 (2010)

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The noise characteristics of a compact high-resolution Shack–Hartmann wavefront sensor with an extended pupil to sensor distance have been measured. The standard deviation, σ, of the angular position error caused by random noise conforms to theoretical predictions of discrete detector arrays described by σ tot = λ / D ( ω / SNR + η / V s ) , where ω is the position error constant, SNR is the signal-to-noise ratio, η is the geometric aperture constant, and V s is the sum of the signal’s total counts. The agreement both confirms the theoretical derivation of this useful formula and shows that measurement of ocular aberrations under laboratory conditions at working distances greater than 30 cm introduces negligible additional error.

© 2010 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(220.1010) Optical design and fabrication : Aberrations (global)
(230.0230) Optical devices : Optical devices
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices

ToC Category:
Wavefront Sensors

Original Manuscript: March 15, 2010
Revised Manuscript: July 23, 2010
Manuscript Accepted: July 27, 2010
Published: September 3, 2010

Virtual Issues
Vol. 6, Iss. 1 Virtual Journal for Biomedical Optics

Andre Fleck and Vasudevan Lakshminarayanan, "Statistical error of a compact high-resolution Shack–Hartmann wavefront sensor with a discrete detector array," Appl. Opt. 49, G136-G139 (2010)

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