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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68348

    Title: 控制變焦鏡頭的軌跡及非球面形狀之研究設計
    Authors: 陳泓餘;Chen,Hong-Yu
    Contributors: 光電科學與工程學系
    Keywords: 變焦鏡頭;變焦軌跡
    Date: 2015-08-19
    Issue Date: 2015-09-23 11:29:37 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 摘要
    本文的作法是將此控制方法結合光學模擬軟體Code V的函數寫成Macro巨集程式,並在Code V中利用寫好的巨集程式來進行本文所要做的控制,最後將此方法應用在變焦鏡頭的設計上,並實際設計出一顆400萬畫素三倍變焦,變焦的焦距範圍在2.849 mm-8.547 mm,最大半視角的範圍為30-10.89的手機鏡頭。
    In this article, We use slope to control the zoom curve of zoom lens and the shape of aspherical surface. If the sign of slope changes, it means there is an extreme value in terms of mathematics. For zoom curve, the change of the sign of slope represents an extreme value point. It will cause some bad situations on zoom lens like to get stuck or abrasion during the move of the lens groups in the cone. These bad situations will reduce the life of zoom lens. By controlling the slope of zoom curve we can make zoom curve flatter and remove the extreme value point of zoom curve.
    By controlling the slope of aspherical surfaces we can control the slape of aspherical surfaces. There are some limitations during the production of lens. If we can control the change of aspherical surfaces by controlling the slope of aspherical surfaces, we can make the extreme value point disappear. If we can control the slope of aspherical surfaces we can avoid designing a lens which is not productive.
    We combine this method with functions in optical design software Code V as Macro program. In the end of this article, we use this method in zoom lens design to design a 4 mega pixels 3X zoom mobile camera. The focal length range of mobile camera is 2.849(mm) ~ 8.547(mm), and the range of max half angle is 30~10.89.
    Appears in Collections:[光電科學研究所] 博碩士論文

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