Ultrahigh-performance long-focal-length close-focusing zoom lens for the visible waveband

Iain N. Neil

doi:10.1117/12.142866

15 April 1993 Ultrahigh-performance long-focal-length close-focusing zoom lens for the visible waveband

Iain N. Neil

Proceedings Volume 1780, Lens and Optical Systems Design; 17801W (1993) https://doi.org/10.1117/12.142866
Event: Optical Systems Design '92, 1992, Berlin, Germany

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.

Citation Download Citation

Iain N. Neil "Ultrahigh-performance long-focal-length close-focusing zoom lens for the visible waveband", Proc. SPIE 1780, Lens and Optical Systems Design, 17801W (15 April 1993); https://doi.org/10.1117/12.142866

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