Scattering is not necessarily an obstacle to imaging. It can help enhance imaging performance beyond the reach of a lens system. However, current scattering-enhanced imaging systems require prior knowledge of the transmission matrix. There are also some techniques that do not require such prior knowledge to see through strongly scattering media, but the results are still limited by the optics used. Here we propose overcoming the diffraction limit through a visually opaque diffuser. By controlling the distance between the diffuser and lens system, light with higher spatial frequencies is scattered into the entrance pupil. With the deformed wavefront corrected, we experimentally achieved imaging with 3.39×$3.39 \times$ enhancement of the Rayleigh limit. In addition, our method works well for objects that are 4×$4 \times$ larger than the memory effect range and can maintain super-resolution performance for a depth of field 6.6×$6.6 \times$ larger than a lens can achieve. Using our method, an obstructive scattering medium can enhance the throughput of the imaging system, even though the transmission matrix of the scattering medium has not been measured beforehand.

中文翻译：

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通过利用未测量的散射介质克服衍射极限

散射不一定是成像的障碍。它可以帮助增强成像性能，超出镜头系统的范围。然而，当前的散射增强成像系统需要传输矩阵的先验知识。还有一些技术不需要此类先验知识即可透视强散射介质，但结果仍然受到所使用的光学器件的限制。在这里，我们建议通过视觉上不透明的漫射器来克服衍射极限。通过控制扩散器和透镜系统之间的距离，具有较高空间频率的光被散射到入瞳中。通过校正变形波前，我们通过实验实现了瑞利极限增强3.39倍$3.39 \times$的成像。此外，我们的方法对于比记忆效应范围大4倍$4 \times$的物体效果很好，并且可以在比镜头所能达到的景深大6.6倍$6.6 \times$的情况下保持超分辨率性能。使用我们的方法，即使散射介质的传输矩阵尚未事先测量，阻塞性散射介质也可以提高成像系统的吞吐量。