16 September 1980 Designing Zoom Lenses Aided By The Delano Diagram
Author Affiliations +
Proceedings Volume 0237, 1980 International Lens Design Conference; (1980) https://doi.org/10.1117/12.959091
Event: 1980 International Lens Design Conference, 1980, Oakland, United States
Abstract
Zoom lenses generally contain moveable lens groups. The behavior of one moveable lens, two moveable lenses, and two moveable lenses together with one fixed lens is discussed in terms of the Delano and Aperture diagrams. This is followed by a discussion of the important features of the two diagrams with respect to zoom lenses: stop shift, partial vignetting, sensitivity to cam mechanism, aberrational behavior of thin lenses, additional aberrations of aspheres. Then the most widely used zoom lenses in photography and cinematography, the standard mechanically compensated zoom lenses, are presented. The four principal types are explained in terms of the diagrams and are discussed with respect to vignetting, aberrational behavior and sensitivity to cam mechanism. Further on simple zoom lenses which contain only a two-lens zoom kernel and a relay lens are considered. Two main types exist, each of which can be divided into three different subgroups. It is true that the Delano diagram offers an impressive and quick overall view of the features of a zoom lens. But designing a new zoom lens from scratch requires a little more than merely looking at beautiful diagrams. What can and must be done is demonstrated by the following design example of a simple zoom lens.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Walter Besenmatter, Walter Besenmatter, } "Designing Zoom Lenses Aided By The Delano Diagram", Proc. SPIE 0237, 1980 International Lens Design Conference, (16 September 1980); doi: 10.1117/12.959091; https://doi.org/10.1117/12.959091
PROCEEDINGS
14 PAGES


SHARE
RELATED CONTENT

Design of a wide angle zoom lens using an asphere...
Proceedings of SPIE (September 02 2015)
Design of compact camera zoom lenses with high zoom ratios
Proceedings of SPIE (September 24 1997)
High performance wide angle macrofocus zoom lens for 35 mm...
Proceedings of SPIE (September 20 1998)
Toward the global optimum in zoom lens design
Proceedings of SPIE (October 18 2012)
Zoom lens design
Proceedings of SPIE (December 13 2001)

Back to Top