Further miniaturization of imaging systems is prevented by the prevalent, traditional bulky refractive optics today. Meta-optics have recently generated great interest in the visible wavelength as a replacement for refractive optics thanks to their low weight, small size, and amenability to high-throughput semiconductor manufacturing. Here, we extend these meta-optics to the long-wave infrared (LWIR) regime and demonstrate imaging with a 2 cm aperture f/1 all-silicon metalens under ambient thermal emission. We showed that even with the strongly chromatic nature of the metalenses, we can perform ambient light imaging, primarily due to the lack of wavelength discrimination in the sensor, as is the norm for an RGB-camera in the visible.

中文翻译：

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通过全硅元透镜在环境热辐射下进行长波长红外成像

当今流行的传统笨重折射光学器件阻止了成像系统的进一步小型化。由于其重量轻、尺寸小且适合高通量半导体制造，元光学最近引起了人们对可见光波长作为折射光学替代品的极大兴趣。在这里，我们将这些元光学扩展到长波红外 (LWIR) 范围，并演示了在环境热辐射下使用 2 cm 孔径f / 1 全硅元透镜的成像。我们表明，即使元透镜具有强烈的色度特性，我们也可以执行环境光成像，这主要是由于传感器中缺乏波长辨别力，这是可见光中 RGB 相机的标准。