Large-aperture infrared super-lens camera

Abstract

The invention discloses a large-aperture infrared super-lens camera, and belongs to the technical fields of infrared imaging and micro-nano photonics. The large-aperture infrared super-lens camera comprises a large-aperture super-lens, an infrared focal plane array detector, a super-lens mechanical assembly part and a shell, wherein an aperture of the large-aperture super-lens is greater than 50mm, thickness of the large-aperture super-lens is less than 2mm, and a distance between the large-aperture super-lens and the infrared focal plane array detector is greater than 30mm; the super-lens mechanical assembly part adopts a buffer structure to carry out fixation, adjustment and anti-seismic protection on the super-lens; and the shell adopts a heat-insulating coating and is sealed, so that heat-insulating and waterproof protection is performed on a lens. According to the invention, by adopting a strict electromagnetic field value, a diffraction design algorithm and a large-area semiconductor process preparation method, an aperture of a super-lens is increased to more than 50mm; and under the condition that the F number of the super-lens meets requirements of an image signal-to-noise ratio, a focal length and magnification of a camera are greatly improved, the problems of a short focal length, small magnification and an insufficient imaging distance of a conventional super-lens camera are solved, and detection imaging can be carried out on middle and long-distance objects.

Description

technical field [0001] The invention belongs to the technical field of infrared imaging and micro-nano photonics, and more specifically relates to a large-aperture infrared super-lens camera. Background technique [0002] Infrared imaging technology is a technology that obtains the thermal radiation information of the target object and converts it into an image visible to the human eye. Compared with visible light imaging technology, this imaging technology has the advantages of strong concealment, anti-interference ability, and good environmental adaptability, so it is widely used in military fields such as night reconnaissance, infrared guidance, and missile early warning, as well as security monitoring, vehicle-mounted night vision, and industrial inspection. and other civilian fields. [0003] In recent years, as infrared imaging technology is increasingly used in airborne, mobile and other occasions that are sensitive to equipment weight, volume and cost, light, compac...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above defects or improvement needs of the prior art, the present invention provides a large-aperture infrared super-lens camera, thereby solving the technical problems of the current infrared super-lens camera with small focal length, low magnification, and insufficient imaging distance

Images