| Summary: | 碩士 === 國立交通大學 === 光電工程研究所 === 101 === An optical image system using liquid crystal lenses with separated focusing and zooming function is demonstrated. The structure of system originated from traditional optical zoom system, and using tunable liquid crystal lens groups to change focus plane and image magnification. In this thesis, we start from discussing system’s focusing lens condition and the magnification. Then, analyze the impact of the system parameters, including tunable lens power range of liquid crystal lenses, the image position of focusing lens and the system length. Based on the analysis, we design an optical image system with separated focusing and zooming function, having the same zoom ratio (7:1) over the objective distance from 10cm to infinity and the system length 10cm. The potential applications are the devices that demands compact and light optical zoom systems such as smart phones and Google glasses.
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