To analyze focalization character of Gaussian beams passing through optical system with misaligned lens,an approximate expanded formula of misaligned circular aperture function and an generalized diffraction formula were used. The dependence of field distribution of output beam maximum value on the landscape orientation displacement and angle displacement were given. Result shows that various misaligned components have effects on the field distribution of reflection beam. Based on a specific lens system, the impact of maladjustment factors on output beams maximum value field distribution was analyzed quantitatively. The results show that the transverse-displacement has more impact than the angle-displacement on the focalization character when the parameter is small.%为分析透镜系统中圆孔光栏和透镜失调对高斯光束聚焦特性的影响,利用椭圆光栏近似展开式和失调光学系统的广义衍射公式,推导高斯光束经含圆孔光栏失调透镜系统传输的近似解析式,得到输出光束光强极大值场分布与光束参量、孔径尺寸、光栏和透镜失调量之间的关系.针对特定透镜系统,定量分析失调量对输出光束聚焦特性的影响.结果表明:各元件的失调对输出光束聚焦特性均产生影响,在失调量较小时透镜横位移对输出光束聚焦特性的影响比透镜角位移对输出光束聚焦特性的影响更明显.
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