1 August 2000 Expansion of the dynamic range of a Shack-Hartmann sensor by using astigmatic microlenses
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Abstract
The dynamic range of a Shack-Hartmann sensor is normally limited by the fact that the foci can leave their subapertures and so a definite attachment of the foci to their subapertures is difficult. One method for solving this problem is to give the focal spots a kind of label to identify them even if they leave their subaperture. We describe how the dynamic range of a Shack-Hartmann sensor can be expanded by using lenses with well-defined astigmatism. We also derive a relation between the spot displacements and the partial derivatives of the wavefront for large wavefront slopes.
Norbert Lindlein, Norbert Lindlein, Johannes Pfund, Johannes Pfund, Johannes Schwider, Johannes Schwider, "Expansion of the dynamic range of a Shack-Hartmann sensor by using astigmatic microlenses," Optical Engineering 39(8), (1 August 2000). https://doi.org/10.1117/1.1304846 . Submission:
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