摘要
本文旨在自行設計ㄧ顆零視角、低畸變與長景深等特性的顯微遠心鏡頭，此顆鏡頭具有良好的分辨率、對比度和低失真率的要求，可用於機器視覺檢測和生物醫學顯像使用。 本文使用OpTalix軟體完成光路模擬，設計一顆物方遠心鏡頭，首先設定量測物範圍與CCD感光元件的規格，得到鏡頭定位截距與光學倍率，取像物高等基本規範，再比較市售產品訂出TV Distortion Less than 0.1﹪， DOF 0.09mm的要求；光路設計部份先篩選出3種常用的光學透鏡配置，進行軟體模擬，從中選擇較優光路進行優化，完成ㄧ顆具有4群5枚的6x顯微遠心鏡頭，鏡頭取像高度Max 1.35mm (視角1.08mm x 0.81mm)，光學放大倍率6x，實際工作距65mm，解析度達2.8μm，NA 0.07，Distortion 0.13﹪(TV Distortion Less than 0.1﹪)的顯微遠心鏡頭。 關鍵詞：顯微遠心鏡頭、機械視覺檢測、OpTalix軟體
並列摘要
This research is to design a microscope telecentric lens that has low field of view, distortionless and long depth of field (DOF). This lens will possess gualition good clearness, contrast ratio and low distortion. It can be used in machine-vision, measurement and bio-medical imaging. We use the “OpTalix” optical design software to simulate the optical ray (optical path) to design an objective space telecentric lens. First, we set up a field of object and CCD sensor area to define the design specifications of c-mount, magnification and image height. Compared with a commercial lens, we set the following specifications : TV distortion less than 0.1% and DOF 0.09mm. We choose three common lay-outs of lens arrangement to simulate and get the best arrangement of a four-groups and five-pieces 6x microscopic telecentric lens to optimize. After a series of simulation and optimization work, we design a 6x microscopic telecentric lens with specifications as follows: Max 1.35mm (field of view 1.08mm x 1.08mm) magnification 6x, working distance 65mm, lens length 101mm, resolution 2.8um, NA 0.07 and distortion 0.13% (TV distortion less than 0.1%) Keywords: Microscope Telecentric Lens, Machine-vision, OpTalix