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Proceedings Paper

Design of compact camera zoom lenses with high zoom ratios
Author(s): Takanori Yamanashi
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Paper Abstract

The process behind compact cameras, capable of achieving high zoom ratios are described. In addition to the development of a suitable new type of zoom lens, the internal focusing is essential to the design. The study focuses upon current major lens types, especially a three-group zoom lens which are composed of positive, positive and negative refractive powers for respective lens groups. First, requirements on the development of zoom lenses are described. Then properties of lens types are discussed. Using similar specifications, applications of standard zoom lenses providing higher aperture are shown. The characteristics of these zoom lenses are then summarized.

Paper Details

Date Published: 25 September 1997
PDF: 12 pages
Proc. SPIE 3129, Zoom Lenses II, (25 September 1997); doi: 10.1117/12.279091
Show Author Affiliations
Takanori Yamanashi, Olympus Optical Co., Ltd. (United States)

Published in SPIE Proceedings Vol. 3129:
Zoom Lenses II
Ellis I. Betensky; Allen Mann; Iain A. Neil, Editor(s)

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