Zoom lens without focus-breathing phenomena

Kazuo Tanaka

doi:10.1117/12.450421

14 December 2001 Zoom lens without focus-breathing phenomena

Kazuo Tanaka

Proceedings Volume 4487, Zoom Lenses III; (2001) https://doi.org/10.1117/12.450421
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Assuming that exit pupil position is fixed, it is presented a zoom lens having a focusing mechanism which does not give rise to any changes in the angular field of view. A frontal part set in front of the zooming part consists of two movable components for focusing. The paraxial condition in which no focus breathing phenomena exist is, in general, derived. Explicit expressions of component-displacement are obtained together with the relation to one-movable component focusing method. According to the analysis, a zoom lens is designed to show the usefulness of the analysis.

Citation Download Citation

Kazuo Tanaka "Zoom lens without focus-breathing phenomena", Proc. SPIE 4487, Zoom Lenses III, (14 December 2001); https://doi.org/10.1117/12.450421

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