| 偏心摄影验光法的原理分析和计算机模拟 |
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| 引用本文： | 李湘宁,陈家璧,许陇云.偏心摄影验光法的原理分析和计算机模拟[J].上海理工大学学报,2000,22(2):150-153. |
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| 作者姓名： | 李湘宁 陈家璧 许陇云 |
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| 作者单位： | 上海理工大学,光学与电子信息工程学院,上海,200093 |
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| 摘 要： | 对偏心摄影光法的光学原理进行了讨论，并改进了计算公式；考虑了光源宽度和照相机口径大小的影响，减小了计算中的系统误差；用计算机模拟了摄影验光的成像过程，与真实的摄影验不图像进行了对比，并验证了分析结果。
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| 关 键 词： | 偏心摄影验光 渐晕 计算机模拟 |
| 修稿时间： | : |
Theoretical analysis and computer simulation for eccentric photorefraction |
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| LI Xiang-ning,CHEN Jia-bi,XU Long-yun.Theoretical analysis and computer simulation for eccentric photorefraction[J].Journal of University of Shanghai For Science and Technology,2000,22(2):150-153. |
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| Authors: | LI Xiang-ning CHEN Jia-bi XU Long-yun |
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| Abstract: | The optical principle of eccentric photorefraction for testing refractive error of eyes is discussed. Formula is imProved in considering the effect of extended light source and the size of camer aperture, which can reduce the system error and is more reliable in practice. Computer simulation of the imaging process is made to verify the fineness of the results. The photograph of a myopic eye is also treated for comparison. |
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| Keywords: | eccentric photorefraction vignetting simulation |
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