柯林斯公式的近似计算及应用研究

基金项目:

云南省自然科学研究基金资助项目(2005F0025M)

详细信息

Approximate calculation of Collins’ formula and application research

Faculty of Science, Kunming University of Science and Technology, Kunming 650093, China

摘要: 为了验证柯林斯公式的一种近似计算方法,对光波通过方形孔径光阑及一薄透镜时的衍射图像进行理论计算,并与实验结果进行比较.研究结果表明,理论计算与实验结果一致.利用该方法对透镜的焦距进行了测量,将测量结果与传统方法测得的焦距进行比较,两者误差不到1%.
- 激光光学 /
- 柯林斯公式 /
- ABCD系统 /
- 衍射条纹 /
- 焦距测量
Abstract: In order to validate the approximate algorithm of Collins' formula,the diffraction images for a light wave that passes a thin lens from a quadrate aperture were evaluated numerically and compared with the experimental results.It is shown that the experimental results are in agreement with the computation results.Therefore,this approximate method is applied to the measurement of the lens focus,and the focus error between the approximate method and traditional method is less than 1%.
- laser optics /
- Collins' formula /
- ABCD system /
- diffraction stripe /
- focus measurement

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