Graphical approach to Shack-Hartmann lenslet array design

John E. Greivenkamp; Daniel G. Smith

doi:10.1117/1.2940143

1 June 2008 Graphical approach to Shack-Hartmann lenslet array design

John E. Greivenkamp, Daniel G. Smith

Author Affiliations +

Optical Engineering, Vol. 47, Issue 6, 063601 (June 2008). https://doi.org/10.1117/1.2940143

Abstract

The performance of a Shack-Hartmann wavefront sensor is largely determined by the design of the lenslet array. In its simplest form, there are two available design parameters: the number of lenslets across the diameter of the wavefront, and the focal length. Spatial resolution, sensitivity, accuracy, and dynamic range are all affected by one or both of these parameters. For example, by virtue of increased spot motion under a fixed wavefront slope, longer focal lengths provide greater slope sensitivity. Simultaneously, longer focal lengths reduce the dynamic range, since spots may overlap for smaller wavefront curvatures. This paper presents a graphical approach to lenslet array design where various considerations constrain the possible solutions of the design problem.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

John E. Greivenkamp and Daniel G. Smith "Graphical approach to Shack-Hartmann lenslet array design," Optical Engineering 47(6), 063601 (1 June 2008). https://doi.org/10.1117/1.2940143

Published: 1 June 2008

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