| 基于二次付里叶变换的CCD精密定焦 |
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| 引用本文： | 李建新,廖兆曙.基于二次付里叶变换的CCD精密定焦[J].培训与研究,2006,23(8):61-62,72. |
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| 作者姓名： | 李建新 廖兆曙 |
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| 作者单位： | 武汉工交职业学院 武汉430074(李建新)，华中科技大学 武汉430074(廖兆曙) |
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| 摘 要： | CCD和其透镜作为逆付里叶变换系统,输入面为两个狭缝,改变正、负付里叶变换透镜的距离,自动比较CCD上两个波峰的间隔变化来控制CCD移动定焦。用付里叶变换原理和几何光学成像原理进行理论分析,并进行了实验研究和误差分析,这种方法有较高的定位精度。
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| 关 键 词： | 定焦 付里叶变换 衍射 CCD |
| 文章编号： | 1007-1687（2006）08-0061-02 |
| 收稿时间： | 04 22 2006 12:00AM |
| 修稿时间： | 2006-04-22 |
CCD and Its Locating Focal Length Based on Fourier Transform System |
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| LI Jian-Xin,LIAO Zhao-shu.CCD and Its Locating Focal Length Based on Fourier Transform System[J].Training and Research-Journal of Hubei College of Education,2006,23(8):61-62,72. |
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| Authors: | LI Jian-Xin LIAO Zhao-shu |
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| Abstract: | The spectrum plane is tow slits while CCD and its lens acting converse Fourier Transform System.When changing the space of lens which are positive and negative Fourier Transform,CCD moving locating focus is controlled by automatic comparing interval change of tow crests on CCD.In this paper,theoretical analysis is proceed with principle of Fourier Transform and imagine theory in geometrical optics,and experiment is carried out and range of error is analyzed.This method has higher locating accuracy. |
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| Keywords: | locating focal length Fourier transform diffraction CCD |
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