Infrared continuous zooming area array scanning optical system and image motion compensation method

Abstract

The invention discloses an infrared continuous zooming area array scanning optical system and an image motion compensation method. The infrared continuous zooming area array scanning optical system sequentially comprises a front fixing group, a compensation group, a zooming group, a rear fixing group, a scanning galvanometer, a secondary convergence group, a turning reflector, a tertiary imaging group, an optical window and an aperture diaphragm from an object plane to an image plane. When the scanning galvanometer is in a locked state, the optical system can work in a staring tracking mode, the zooming magnification can reach 6 times, and the distortion of each focal length is less than 0.5%. When the scanning galvanometer scans back and forth within a certain angle range, the optical system can work in an area array circumferential scanning search mode, the system can zoom between multiple focal lengths, no defocus is generated in the scanning process, and the imaging is clear. The system zooming and scanning forms are simple, and a scanning mirror is introduced through the movement of two groups of optical elements and a middle parallel optical path, so that the system has the characteristics of small scanning mirror size, no defocus in the scanning process, multi-gear area array circumferential scanning, ultra-low optical distortion and staring continuous zooming, and can be applied to an infrared system integrating searching and tracking.

Description

technical field [0001] The invention relates to an infrared detection optical system, in particular to an infrared optical system with continuous zoom area array scanning and an image motion compensation method. Background technique [0002] Infrared search and tracking uses the infrared characteristics of the target to detect and track the target. It can provide panoramic surveillance capabilities, search for targets at night or in poor visibility, and improve the system's perception of air, ground and sea threats. It has become an important modern technology. One of the weapons and equipment. The infrared search and track system has two functions of target search and target tracking. First, the infrared system platform scans and images in a 360° azimuth or within the angular range of key areas at a certain speed. After finding the target, the system switches to tracking mode. The infrared search and track system has many advantages such as good concealment, wide detecti...

AI Technical Summary

Problems solved by technology

During its 360° scan search and staring tracking, the resolution of the target cannot be continuously changed, and it cannot take into account the functions of large field of view search and small field of view continuous tracking

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