本論文提出一種變焦鏡頭的光學系統設計，並介紹變焦鏡頭的基本架構、光學原理及設計過程需注意的細節，利用本文所提出的設計過程與優化過程，針對攝影師最常使用的鏡頭焦段，設計出一顆三倍變焦鏡頭運用於數位單眼相機上，其影像感測器為一千萬畫素CCD尺寸為APS-C (23.6mm×15.7mm)，焦距範圍為17 mm至51 mm、半視角為39.8°至15.52°，F/#為2.8至4，最後利用本文所提出的公差分析流程，進行公差分析，以確保設計的變焦鏡頭可以量產化。;In the thesis is to design there three zoom lenses on DSLR.1000 pixels of image sensor than CCD size is APS-C (23.6mm×15.7mm),the 17-51mm is focal length range, 39.8 °-15.52 ° is half angle range, 2.8 to 4 are F/#. First to describe the basic architecture of the zoom lens, principles of optics and design guideline that to explain thesis design process of zoom lens, processes of streamline business and processes of tolerance analysis. Final design parameters for image quality are in compliance with the design requirements; the zoom lens MTF performance at different focal lengths and all of view angle that more than 30 percent were preserved.
