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| 0.5×～2.5×长工作距离变焦距显微物镜设计 |
| 0.5×~2.5× long working distance zoom microscope objective lens design |
| 投稿时间：2017-11-29 |
| DOI：10.3969/j.issn.1005-5630.2018.04.007 |
| 中文关键词: 光学设计 变焦距显微物镜 机械补偿 公差分析 |
| 英文关键词:optical design zoom microscope objectives mechanical compensation tolerance analysis |
| 基金项目:福建省科技厅引导性项目（2017H0010）；福州市校（院所）科技合作项目（2016-G-46） |
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| 中文摘要: |
| 根据变焦距理论和显微物镜的特点，利用Zemax设计了一款可连续变倍的显微物镜。该物镜由4组双胶合透镜组构成，结构简单，成像质量良好，变倍范围在0.5×～2.5×之间，最大数值孔径达到0.1，共轭距346 mm，物距76 mm，空间频率65 lp/mm处，全视场内的调制传递函数均大于0.3，适用于可见光光谱，可以与1/2 inch CCD相匹配。通过对所设计的变倍显微物镜进行公差分析，得到一套比较宽松的公差，适合批量生产。设计结果表明，该变倍显微物镜可以满足工业视频检测的要求。 |
| 英文摘要: |
| According to the characteristics of the zoom theory and microscope objectives,we are designing a continuous zoom microscope objective by using Zemax.The objective consists of 4 doublet lens groups,with simple structure and good image quality.Zoom ranges from 0.5 times to 2.5 times,and its maximum numerical aperture is 0.1.The objective is applicable to the visible light spectrum,which matches the 1/2 inch CCD.Its conjugate distance is 346 mm.Object distance is 76 mm.The whole field of modulation transfer function is greater than 0.3 in the 65 lp/mm spatial frequency.Based on tolerance analysis of the continuous zoom microscope objectives,we get a relatively loose tolerance,which is suitable for mass production.Results show that the zoom microscope objectives can meet the requirements of industrial video detection. |
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