Free-form surface optical thermal imager

Due to the inherent advantages of free-form surface, the design and R & D of infrared optical free-form surface has become the development trend of cutting-edge infrared imaging optical system. It is one of the key technologies and effective means to solve the contradiction between large field of view, long focal distance and system miniaturization in infrared imaging system, and realize high-performance, miniaturization and lightweight infrared optical system. The performance and image quality of the thermal imager based on free-form surface optical design are significantly improved compared with the traditional thermal imager.