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Proceedings Paper

Designing astigmatism-corrected zoom lenses for digital consumer imaging
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Paper Abstract

Demanding consumer digital imaging applications require excellent aberration correction during optical zoom. Object shifting in an optical system induces astigmatism that depends on the spherical aberration of the pupil. Although a zoom lens also refocuses and changes optical power for different configurations, obtaining the simplest configurations with astigmatism correction also requires correction of the spherical aberration of the pupil. Analysis of image quality for these factors should include focal corridor assessment across the field-of-view using an appropriate metric such as through-focus MTF. This paper discusses zoom lens correction and analysis based on these principles that enables quality consumer digital imaging products.

Paper Details

Date Published: 9 September 2019
PDF: 10 pages
Proc. SPIE 11106, Zoom Lenses VI, 111060A (9 September 2019);
Show Author Affiliations
Richard N. Youngworth, Riyo LLC (United States)
Ellis I. Betensky, Consultant (Canada)


Published in SPIE Proceedings Vol. 11106:
Zoom Lenses VI
Takanori Yamanashi; Aurelian Dodoc, Editor(s)

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