提出用照相缩微法制作一个小孔距对称双圆孔作为待测透镜傅里叶变换输入函数,利

用其傅里叶变换频谱面上的干涉条纹间距的测量值计算透镜焦距。该法装置简单,调节方便,测

量精度较高。分析了测量原理和测量误差,并给出了与理论分析相符的结果。

-Proposed method microfilm camera, a small hole as a Distance symmetric double Fourier transform lens under test input function, using its Fourier transform spectrum of the interference fringe spacing of the surface of the lens focal length calculation of measured values. The law device is simple, convenient, high measurement accuracy. Analysis of the measurement principle and measurement error, and gives consistent with the theoretical analysis results.