Synthetic aperture has been a common method in digital holographic microscopy resolution enhancement over the years. Multiangle illumination is one type of synthetic aperture methods. Reconstructed phase errors appeared when synthesizing aperture not considering the difference between different inclined incident beams' reconstruction distances. To reduce phase errors, this paper proposes a method using different reconstruction distances in inclined incident beams to achieve synthetic aperture resolution enhancement. A multiangle illumination reflectance digital holographic microscopy system is built to prove this method. The reconstruction distances can be calculated theoretically to compute the phase image. The phase image errors can be remarkably reduced by using the proposed method by analyzing the experimental result.

中文翻译：

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减少多角度照明数字全息显微镜中的相位误差

多年来，合成孔径一直是数字全息显微镜分辨率增强的常用方法。多角度照明是一种合成孔径方法。在不考虑不同倾斜入射光束重构距离差异的情况下，合成孔径时出现重构相位误差。为了减少相位误差，本文提出了一种在倾斜入射光束中使用不同重构距离来实现合成孔径分辨率增强的方法。建立了多角度照明反射数字全息显微镜系统来证明这种方法。理论上可以计算重建距离以计算相位图像。通过对实验结果的分析，使用所提出的方法可以显着减少相位图像误差。