| 观瞄仪目标发生器准直投影系统的设计 |
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| 引用本文： | 韩军,师永栋,陈文建,杨建莉,胡斐. 观瞄仪目标发生器准直投影系统的设计[J]. 应用光学, 2016, 37(5): 663-667. DOI: 10.5768/JAO201637.0501005 |
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| 作者姓名： | 韩军 师永栋 陈文建 杨建莉 胡斐 |
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| 作者单位： | 1.西安工业大学 光电工程学院,陕西 西安 710021; |
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| 基金项目： | 陕西省科技厅（2014KW05) |
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| 摘 要： | 针对空间标准动态目标发生器的设计指标要求，对卡塞格林R C系统进行了改进，通过在第2镜和像面之间加入一片双曲面镜，设计完成了焦距为1 600 mm、相对孔径为1∶1.2、视场角为1°、工作波段在0.4 μm~0.7 μm和8 μm~12 μm的共轴三反射光学系统。设计结果表明:该系统弥散斑RMS小于5 μm，在可见光波段与远红外波段相应的空间频率处，此共轴三反系统的调制传递函数值均大于0.7，接近衍射极限，满足系统对成像质量的要求。
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| 关 键 词： | 空间标准动态目标发生器 光学设计 卡塞格林R C系统 共轴三反系统 |
| 收稿时间： | 2016-03-07 |
Design of collimating projection system used for target generator of sighting instrument |
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| Affiliation: | 1.School of Optoelectronics Engineering,Xi’an Technological University,Xi’an 710021,China;2.Xi’an Institute of Applied Optics,Xi’an 710065,China;3.Xi’an Institute of Space Radio Technology,CAST,Xi’an 710100,China |
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| Abstract: | According to the requirements of design specifications for standard dynamic target generator of space，we improved the Cassegrain R C system，namely joining a hyperboloidal mirror between the second lens and image plane. The optical system can collimate the output from liquid crystal light valve in 0.4 μm~0.7 μm and 8 μm~12 μm，and enable an image system to be tested out of 1° field of view. The effective focal length is 1 600 mm and the relative effective aperture is F/1.2 .The result indicates that the diffuse plaque root mean square(RMS) is less than 0.5,the modulation transfer function (MTF)of the coaxial three mirror system values is always greater than 0.7,and close to the diffraction limit at the corresponding spatial frequency of visible and far infrared band,hence the coaxial three mirror system meets the requirements of image quality. |
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