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Proceedings Paper

Ultrahigh-performance long-focal-length close-focusing zoom lens for the visible waveband
Author(s): Iain N. Neil
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Paper Abstract

A long focal length close focusing zoom lens for the visible waveband which rivals the performance of fixed long focal length lenses is described. Particular areas of discussion include, the utilization of anomalous glasses to control secondary color and the choice of focus system configuration to minimize breathing, provide continuous close focusing to macro magnifications and the reduction of the number of large diameter elements required.

Paper Details

Date Published: 15 April 1993
PDF: 17 pages
Proc. SPIE 1780, Lens and Optical Systems Design, 17801W (15 April 1993); doi: 10.1117/12.142866
Show Author Affiliations
Iain N. Neil, Panavision International, LP (United States)

Published in SPIE Proceedings Vol. 1780:
Lens and Optical Systems Design
Hannfried Zuegge, Editor(s)

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