| 像方扫描技术研究 |
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| 引用本文： | 邓键,李锐钢,郑昌盛.像方扫描技术研究[J].应用光学,2012,33(2):284-287. |
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| 作者姓名： | 邓键 李锐钢 郑昌盛 |
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| 作者单位： | 1.西南技术物理研究所,四川 成都 610041; |
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| 摘 要： | 基于显微摄影的成像原理，研究了像方扫描以扩大视场的途径，并建立了一个二次成像的设计模型，包括一个大视场的固定前置物镜组和一个运动轨迹为球面的中继透镜组。物镜组所成的一次像面优化了场曲，中继透镜组则根据该场曲进行运动，对一次像面不同区域成像，并采用光学被动消热差以保证不同温度的像质。该模型的相对孔径1∶3，波长3.7 m~4.8 m，焦距90 mm，瞬时凝视视场为4，扫描视场达24，采用7片透镜3个非球面，在全视场范围内具有接近衍射限的像质。
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| 关 键 词： | 光学设计 像方扫描 二次成像 中波红外 |
| 收稿时间： | 2011/9/20 |
Technology of image space scanning |
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| DENG Jian
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LI Rui-gang
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ZHENG Chang-sheng.Technology of image space scanning[J].Journal of Applied Optics,2012,33(2):284-287. |
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| Authors: | DENG Jian LI Rui-gang ZHENG Chang-sheng |
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| Affiliation: | 1.Southwest Institute of Technical Physics,Cheng Du 610041,China;2.Key Laboratory of Optical System Advanced Manufacturing Technology,Changchun Institute ofOptics,Fine Mechanics and Physics,CAS,Changchun 130031,China |
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| Abstract: | Based on the principle of photomicrography, image space scanning is studied to be as the method to expand the optical system's field of view (FOV). An optical design model is introduced, which has secondary imaging structure, including a large FOV fixed front objective lens set and a spherical motion relay lens set. The field curvature of the first image plane of the front lens set is optimized, and the motion trochoid of the relay lens set is according to the curve radii. The relay lens set image the different fields of the first imaging plane and get the image space scanning. Optical passive athermaliztion technology is used to ensure the system imaging quality at different temperatures. The model relative aperture is 1∶3, the wavelength is 3.7μm~4.8μm ,the focal length is 90mm, the instantaneous staring FOV is ± 4°, and the scan FOV is ± 24°. The whole optical system has 7 lenses with 3 asphere surfaces, which is approximate to diffraction limit over the full FOV. |
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| Keywords: | optical design image space scan secondary imaging middle wavelength infrared |
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