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Petzval surface

Pronunciation: pets'vahl

Definition: the curved image plane on which any extended linear object is focused by a lens; it is curved toward the edges of a convex lens and away from the edges of a concave lens.

See: barrel distortion, pincushion distortion

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.