Title

Edge clustered fitting grids for phi-polynomial characterization of freeform optical surfaces

Authors

Authors

I. Kaya; K. P. Thompson;J. P. Rolland

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

Optics

Abstract

With the recent emergence of slow-servo diamond turning, optical designs with surfaces that are not intrinsically rotationally symmetric can be manufactured. In this paper, we demonstrate some important limitations to Zernike polynomial representation of optical surfaces in describing the evolving freeform surface descriptions that are effective for optical design and encountered during optical fabrication. Specifically, we show that the ray grids commonly used in sampling a freeform surface to form a database from which to perform a phi-polynomial fit is limiting the efficacy of computation. We show an edge-clustered fitting grid that effectively suppresses the edge ringing that arises as the polynomial adapts to the fully nonsymmetric features of the surface. (C)2011 Optical Society of America

Journal Title

Optics Express

Volume

19

Issue/Number

27

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

26962

Last Page

26974

WOS Identifier

WOS:000301151500110

ISSN

1094-4087

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