Patent ID: 11815665

Abstract:
The disclosure discloses a large-aperture infrared metalens camera, which belongs to the technical field of infrared imaging and micro-nano photonics, including a large-aperture metalens, an infrared focal plane array detector, a metalens mechanical assembly and a housing. The large-aperture metalens has an aperture greater than 50 mm and a thickness less than 2 mm, and the distance between the large-aperture metalens and the infrared focal plane array detector is greater than 30 mm. The disclosure adopts strict electromagnetic field values, diffraction design algorithm and large-area semiconductor process manufacturing method to increase the aperture of metalens to 50 mm or more, and considerably improves the focal length and magnification of the camera while ensuring that the F-number of the metalens meets the requirements of signal-to-noise ratio of image. The problems of short focal length, small magnification, and insufficient imaging range of conventional metalens cameras are overcome.