We present a device that acts as a diode for natural light. It has different transmission values when light travels in one direction and, respectively, in the opposite one. It relies on the geometric left-right asymmetry of scattering and absorption and uses diffuse light of whichever polarization and with a large spectral range.

中文翻译：

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用于自然（环境）光的几何光学二极管

我们提出了一种充当自然光二极管的设备。当光沿一个方向或相反的方向传播时，它具有不同的透射值。它依赖于散射和吸收的几何左右对称性，并使用偏振态和光谱范围大的漫射光。