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Appl. Sci. 2015, 5(3), 608-621; doi:10.3390/app5030608

A Study of Optical Design on 9× Zoom Ratio by Using a Compensating Liquid Lens

Department of Electrical Engineering, National Formosa University, Yunlin 632, Taiwan
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Author to whom correspondence should be addressed.
Academic Editors: Wen-Hsiang Hsieh and Takayoshi Kobayashi
Received: 13 July 2015 / Revised: 8 September 2015 / Accepted: 11 September 2015 / Published: 21 September 2015
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Abstract

This paper proposes using a liquid lens as a compensating lens and applying intermediate optics to achieve a 9× zoom ratio. The droplet shape and location of the liquid lens can be adjusted reversibly, enabling the focal length and position of the lens to be tuned by varying the voltage applied to a set of electrodes. Therefore, liquid lenses can replace complex lenses to reduce the total length of optomechanical systems. The CODE V built-in optimization method was used to determine the optimal liquid lens parameters at various zoom ratios. Several general optical aberrations were considered. Compared with a standard intermediate optics system featuring 9× zoom and no compensating lens, the proposed lens improved the Petzval surface curvature (PTZ) and modulation transfer function (MTF). Simulation results revealed that the PTZ decreased 10.92% and the MTF increased 3988% in 40 1p/mm. View Full-Text
Keywords: 9× zoom lens; intermediate optics; liquid lens; petzval surface curvature (PTZ); modulation transfer function (MTF) 9× zoom lens; intermediate optics; liquid lens; petzval surface curvature (PTZ); modulation transfer function (MTF)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yen, C.-T.; Shih, J.-M. A Study of Optical Design on 9× Zoom Ratio by Using a Compensating Liquid Lens. Appl. Sci. 2015, 5, 608-621.

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