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| 小孔成像现象再解释 |
| A further explanation of the pinhole imaging |
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| DOI: |
| 中文关键词: 小孔成像 几何学 理想点物 有限大小物 有限尺寸小孔 |
| 英文关键词:pinhole imaging geometry point object finite size object finite size pinhole |
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| 摘要点击次数: 6034 |
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| 中文摘要: |
| 从几何学出发,研究了有限大小物经过有限尺寸小孔以后的成像规律。得到结论如下:对有限大小的物点和有限尺寸的小孔,随着物距的不同,小孔成的像会按成像规律进行放大,但是由于小孔的有限尺寸,故相比于真正意义上的小孔,该放大的像会进一步向上与向下弥散;弥散斑的大小和像距与物距的比值以及小孔尺寸有关,小孔成像并不是通常认为的严格意义上的透镜成像。 |
| 英文摘要: |
| Starting from geometry, the basic finite size object imaging phenomena through finite pinhole is studied. The main helpful results are:for the finite size object and finite size pinhole with different object distance, the image will the enlarged according to the basic imaging rule, but because of the finite size pinhole, the image will be further spread up and down and the size of the image has relation with the ratio of image distance by object distance and the pinhole size, the pinhole imaging is not usually considered the strict sense of the imaging lens. |
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