Research on multiaperture imaging technology with large field of view in mid-wave infrared

The compound eye optical system has the characteristics of large field of view (FOV), high resolution, and strong environmental adaptability, which is an important technology that can break the mutual restraint between the field of view and spatial resolution in optical systems. Based on the characteristics of the compound eye system, we propose a multi-aperture imaging method in mid-wave infrared. The mid-wave fiber bundle array is used as a multi-aperture image plane splicing device, and the multiaperture image plane is coupled with the cooling detector using a secondary imaging structure. The experimental result shows that the optical detection system based on this technology can achieve an imaging distortion of less than 2% in arbitrary large FOV, and a uniform resolution of each large FOV angle, effectively achieving large FOV, small distortion and high-resolution imaging in mid-wave infrared imaging system.