| 红外中波连续变焦光学系统的设计 |
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| 引用本文： | 薛慧,李常伟. 红外中波连续变焦光学系统的设计[J]. 红外与毫米波学报, 2012, 31(5): 421-424 |
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| 作者姓名： | 薛慧 李常伟 |
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| 作者单位： | 1. 南京电子技术研究所,江苏南京,210039
2. 南京天文光学技术研究所,江苏南京,210042 |
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| 摘 要： | 设计了红外连续变焦光学系统,该系统具有镜片少、透过率高、连续变焦倍率大、波段广、相对孔径大等突出特点.二元面和非球面的引入,使系统在不同变焦结构时14 lp/mm处的MTF均大于0.6,很好地校正了系统的色差和轴外像差.该系统在仅使用4片镜片的情况下,实现了8倍连续变焦,系统透过率高于80%.结果表明该变焦系统具有良好的成像质量.
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| 关 键 词： | 光学设计 变焦系统 连续变焦 红外 衍射光学元件 无热化 |
| 收稿时间： | 2011-10-15 |
| 修稿时间： | 2011-12-05 |
Optical design of infrared continuous-zoom lenses |
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| XUE Hui and LI Chang-Wei. Optical design of infrared continuous-zoom lenses[J]. Journal of Infrared and Millimeter Waves, 2012, 31(5): 421-424 |
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| Authors: | XUE Hui and LI Chang-Wei |
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| Affiliation: | Nanjing Research Institute of Electronics Technology,Nanjing Institute of Optics & Technology |
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| Abstract: | An infrared continuous zoom system is designed. The simple system has a large relative aperture with high transmittance, large continuous zoom ratio, and wide wave band. By introducing a diffractive surface and an aspheric surface, the modulation transfer function (MTF) of the system is above 0.6 for all continuous zoom ratios at the spatial frequency of 14lp/mm. As the system only contains 4 lenses, the transmittance is higher than 80%, and the zoom ratio of the system could also reach 8 continuously. As the color and the off-axis aberration are well corrected, the experiment indicates that the image quality of the continuous zoom system is pretty well. |
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| Keywords: | optical design zoom lenses continuous-zoom infrared diffractive optical element athermalization |
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