| 空间滤波成像分析及其光强计算 |
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| 引用本文： | 胡堂视.空间滤波成像分析及其光强计算[J].湖南师范大学自然科学学报,1988(4). |
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| 作者姓名： | 胡堂视 |
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| 作者单位： | 湖南师范大学物理系 |
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| 摘 要： | 正交光栅在氦氖激光束照明下,透镜的后焦面上将呈现出“空间频谱”。其中的每一频谱分量均可视作独立的点光源。任意二点均可产生干涉图样;但它们所带的光栅信息,只有在像面上才能完整体现。图像的光强分布计算与其照片一致。
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| 关 键 词： | 空间滤波 频谱分析 变换 |
THE ANALYSIS OF IMAGE-FORMING OF SPATIAL FILTERING AND THE CALCULATION OF ITS INTENSITY |
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| Hu Tangshi.THE ANALYSIS OF IMAGE-FORMING OF SPATIAL FILTERING AND THE CALCULATION OF ITS INTENSITY[J].Journal of Natural Science of Hunan Normal University,1988(4). |
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| Authors: | Hu Tangshi |
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| Institution: | Hu Tangshi Department of Physics |
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| Abstract: | As a cross-grating is illuminated by a beam of helium-neon laser,there is a
spatial frequency-spectrum on the back focal plane of the lens.Every component
of the spectrum could be regarded as a point source alone,any two of them could
produce interference pattern,but the information of the grating they carry can be
displayed completely only on the image plane.The intensity distribution of the
patten has been calculated which is consistent with its photo. |
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| Keywords: | spatial filtering spectrum analysis transformation |
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