| 基于固定校正镜的折衍共形光学系统设计 |
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| 引用本文： | 沈满德.基于固定校正镜的折衍共形光学系统设计[J].强激光与粒子束,2012,24(6):1353-1356. |
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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基金 |
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| 摘 要： | 设计了一个大扫描视场的折衍混合红外共形光学系统，共形成像系统工作波段为3.7～4.8 m，相对孔径为1/2，焦距为120 mm，扫描视场为40。由于共形光学系统具有大偏心、大倾斜光学特性，像差校正难度较大，设计中采用固定校正镜和折衍混合混合结构校正了共形光学元件的像差，引入了非球面和衍射面有效消除了各个扫描视场的像差。设计结果表明:光学系统光阑与探测器冷光阑重合，满足100%冷光阑效率。在40扫描视场范围内，共形光学系统的光学传递函数曲线接近衍射极限，成像良好。
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| 关 键 词： | 光学设计 红外光学 衍射光学 固定校正镜 |
| 收稿时间： | 2011/11/28 |
Design of conformal infrared refractive/diffractive optical system based on fixed corrector |
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| Shen Mande.Design of conformal infrared refractive/diffractive optical system based on fixed corrector[J].High Power Laser and Particle Beams,2012,24(6):1353-1356. |
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| Authors: | Shen Mande |
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| Affiliation: | 1.School of Electronic and Electric Engineering,Wuhan Textile University,Wuhan 430073,China |
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| Abstract: | A conformal infrared hybrid refractive/diffractive optical system with large scanning field is designed. Its working wavelength range is 3.7-4.8 μm, the efficient focal length (EFL) is 120 mm, the relative aperture is 1/2 and the scanning range is ±40°. The fixed corrector and the refractive/diffractive hybrid configuration are used in the system to compensate aberrations of the conformal optical element. Aspheric surfaces and diffraction surface are used to balance the aberration in all scanning angles. The cold stop efficiency of the conformal optical system achieves 100%.The image quality of the system approaches the diffraction limit in the scanning range of ±40°. |
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| Keywords: | optical design infrared optics diffractive optics fixed corrector |
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