Imaging of phase objects behind scattering media is a challenging task. Intensity imaging through diffusers can be achieved based on digital holography by obtaining the complex amplitude of the diffuser in advance. As described in this paper, we experimentally demonstrate the reconstructed images of phase objects behind diffusers with different diffusion angles by digital holography. Using the complex amplitude information of the diffuser to correct the complex amplitude information of the object through the diffuser, the phase distribution of the object is obtainable behind the diffuser. Imaging of phase objects behind diffusers has been verified through experiments using a plano-convex lens and a wedge substrate as phase objects with various scattering angles. Quantitative analyses of the phase objects are performed. The lens shape can be visualized from the known refractive index. Moreover, the curvature radius can be estimated.

对散射介质后面的相物体进行成像是一项具有挑战性的任务。通过预先获得漫射体的复振幅，基于数字全息术可以实现漫射体的强度成像。正如本文所述，我们通过数字全息实验演示了不同扩散角扩散器后面的相位物体的重建图像。利用扩散板的复振幅信息对经过扩散板的物体的复振幅信息进行校正，可以获得扩散板后面物体的相位分布。通过使用平凸透镜和楔形基板作为具有不同散射角的相位物体的实验验证了扩散器后面的相位物体的成像。对相位对象进行定量分析。可以根据已知的折射率来观察晶状体的形状。此外，可以估计曲率半径。