| 折衍混合光学系统超宽温消热差设计 |
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| 引用本文： | 沈满德.折衍混合光学系统超宽温消热差设计[J].强激光与粒子束,2012,24(8):1789-1792. |
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| 作者姓名： | 沈满德 |
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| 作者单位： | 1.武汉纺织大学 电子与电气工程学院, 武汉 430073 |
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| 基金项目： | 湖北省教育厅中青年项目 |
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| 摘 要： | 利用折衍混合结构设计了超宽温范围内的光学被动式消热差Petzval物镜，系统工作波段为3.2～4.5 m，视场角为8.42，焦距为95 mm，后工作距为60.5 mm。使用锗和硅两种材料，引入了2个非球面和1个衍射面, 实现了消热差和结构简单轻量化，该系统在－80～200 ℃范围内, 调制传递函数(MTF) 优于0.7，接近衍射极限, 成像质量良好，该系统适用于像元尺寸为35 m、像元数320240的非制冷红外焦平面阵列探测器。
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| 关 键 词： | 光学设计 红外光学系统 衍射光学 减热差 |
| 收稿时间： | 2011/11/28 |
Wide-temperature-range athermalization for MWIR hybrid refractive/diffractive optical system |
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| Shen Mande.Wide-temperature-range athermalization for MWIR hybrid refractive/diffractive optical system[J].High Power Laser and Particle Beams,2012,24(8):1789-1792. |
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| Authors: | Shen Mande |
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| Institution: | 1.School of Electronic and Electrical Engineering,Wuhan Textile University,Wuhan 430073,China |
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| Abstract: | A hybrid refractive/diffractive Petzval lens has been designed. Its working wavelength range is 3.2-4.5 μm, full field of view is 8.42°, efficient focal length is 95 mm and back focal length is 60.5 mm. The Petzval lens consists of four lenses, including two aspheric surfaces and a diffractive surface, which make the Petzval lens compact and light. Its modulation transfer function is above 0.7 in the temperature range from -80 to 160 ℃. The Petzval lens is compatible with the uncooled staring focal plane array which has a format of 320×240 and the pixel pitch of 35 μm. |
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| Keywords: | optical design infrared optical system diffractive optics athermalization |
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