視角大於180度的超廣角鏡頭之設計與失真消除

Abstract

本研究主要目的是提供一個超廣角鏡頭設計流程，以及消除超廣角鏡頭所帶來的失真現象。鏡頭設計部分，本文設計了三個範例：視角都至少216度，且全部都是塑膠Zeonex(480R)材質的四片式鏡頭，符合VGA 1/7”或COMS 1/4”規格。MTF在80 cycles/mm都有0.2以上。總長度皆在10mm以下。消除失真方面，成功的消除視角為180度的失真現象，並實驗証明其可行。

This main purpose of thesis study is to develop a lens design procedure of super-wide-angle lens for imaging applications, and by which the distortion of the lens can be greatly reduced to have more information content. Three different designs are shown where all FOV are larger (or equal) than 216 degrees. MTF is greater than 0.2 in 80 cycles/mm.Total lens length is smaller than 10 mm . The lens materials are all with plastic material, Zeonex 480R. These designs are also applicable to CMOS sensor of VGA 1/7” or 1/4”. We also provide an experimental demonstration..