11 September 2008 Miniaturization and simplification of zoom lenses using wavefront coding
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Abstract
Traditional zoom lens designs employ multiple moving lens elements to provide simultaneous control of focal length and focal plane. We present an approach to a design of a simplified zoom lens by employing a single moving element to control only the focal length. We show that the defocus in miniaturized zoom lenses with a single moving element can be corrected by the use of wavefront coding, although this introduces a modest reduction in signal-noise-ratio. As an example, we present a design of a miniaturized 10 mm long wavefront coded 2.3x optical zoom lens with a single moving lens element.
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Mads Demenikov, Ewan Findlay, Andrew R. Harvey, "Miniaturization and simplification of zoom lenses using wavefront coding", Proc. SPIE 7061, Novel Optical Systems Design and Optimization XI, 706102 (11 September 2008); doi: 10.1117/12.792240; https://doi.org/10.1117/12.792240
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