| 变折射率介质对成像变形的影响 |
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| 引用本文： | 黄战华,王蓓,陈嘉佳,程红飞,赵海山,张尹馨. 变折射率介质对成像变形的影响[J]. 天津大学学报(自然科学与工程技术版), 2006, 39(6): 708-711 |
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| 作者姓名： | 黄战华 王蓓 陈嘉佳 程红飞 赵海山 张尹馨 |
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| 作者单位： | [1]光电信息技术科学教育部重点实验室,天津300072 [2]天津大学精密仪器与光电子工程学院,天津300072 |
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| 摘 要： | 为了得到由介质折射率不均匀导致的对成像质量的影响规律，选取了4种典型的折射率分布，应用光线追迹算法，得到在视场角、物距和折射率变化幅度共同作用下实际像点与理想像点间偏差的变化曲线．对于轴向折射率分布，其偏差与视场角成线性关系，随折射率变化幅度的增大而增大，但不随物距变化；对于径向折射率分布，其偏差与视场角一般成非线性关系，并随着视场角的增大而增大，而且随折射率变化幅度的增大而增大，物距变化能够导致偏差的显著变化.
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| 关 键 词： | 折射率 光线追迹 成像变形 图像复原 |
| 文章编号： | 0493-2137（2006）06-0708-04 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-01-172005-09-14 |
Impact of Variable-Refractive-Index Medium on Imaging Distortion |
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| HUANG Zhan-hua,WANG Bei,CHEN Jia-jia,CHENG Hong-fei,ZHAO Hai-shan,ZHANG Yin-xin. Impact of Variable-Refractive-Index Medium on Imaging Distortion[J]. Journal of Tianjin University(Science and Technology), 2006, 39(6): 708-711 |
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| Authors: | HUANG Zhan-hua WANG Bei CHEN Jia-jia CHENG Hong-fei ZHAO Hai-shan ZHANG Yin-xin |
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| Affiliation: | 1. Key Laboratory of Opto-Electronics Information and Technology Science of Ministry of Education, Tianjin 300072, China; 2. School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | In order to find the influence of variable-refractive-index medium on imaging quality, four typical distributions of refractive index are selected, and the algorithm of ray tracing is applied, furthermore, the curves of the error between actual image point and ideal image point are described when the viewing field angle, the object distance or the range of refractive index vary. As for axial refractive index distribution, the error varies directly with viewing field angle and increases with the range of refractive index, but does not vary with object distance. As for radial refractive index distribution, the error generally varies nonlinearly and increases with the viewing field angle and range of refractive index, and changes distinctly with the object distance. |
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| Keywords: | refractive index ray tracing imaging distortion image recovery |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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