廣角轉換鏡頭設計應用於LED投影機上

Abstract

在本篇論文中，我們提出一個設計流程的概念去設計出0.71x廣角轉換鏡頭用於0.3” 數位微型反射鏡元件(Digital Micromirror Device，簡稱DMD)。此 0.71x廣角轉換鏡頭的功能是可以在相同投影距離下，被用來放大原使投影影像尺寸。此0.71x廣角轉換鏡頭是被裝在微型投影機鏡頭前面。比較微型投影機鏡頭在沒有加裝0.71x廣角轉換鏡頭下，這0.71x廣角轉換鏡頭可以在相同投影距離下增加原始投影影像尺寸41.0%。換句話說，在相同的投影影像尺寸下投影距離也可以節省29%。

In this paper, we propose a concept for the design of a 0.71x wide-converter lens for a 0.30 inch Digital Micromirror Device (DMD). This 0.71x wide-converter lens is capable of enlarging the size of the original projected image at the same projection distance. This 0.71x wide-converter lens is attached in front of the projection lens of a Pico Projector (PP). Compared with the projection lens of a PP without 0.71x wide-converter lens, there is an increase in the size of the original projected image of 41.0% at the same projection distance. In other words, there is a saving of projection distance of 29% to obtain a project image of the same size.