Big viewing field scanning thermal imaging system based on staring imaging mode

Abstract

A big viewing field scanning thermal imaging system based on a staring imaging mode relates to a big viewing thermal imaging system and solves the problem that the viewing filed and the space resolution ratio in the existing thermal imaging system are contradictory. The big viewing field scanning thermal imaging system comprises an aperture diaphragm, a first lens group, a second lens group, a cold diaphragm and a two-dimensional movable rack; a big viewing field imaging system formed by the aperture diaphragm and the first lens group adopts a telecentric beam path form in image space; a small viewing field staring imaging system formed by the second lens group and the cold diaphragm is fixed on the two-dimensional moving rack, the movable direction of which is vertical to an optical axis; the input end of the small viewing field staring imaging system is connected with the output end of the small viewing field staring imaging system; and the cold diaphragm is positioned at the outputend of the second lens group. The imaging system utilizes the two-dimensional moving rack to drive the small viewing field staring imaging system to move, thus realizing the scanned imagery on primary image surface. The imaging system has the advantages that the system combines the small viewing field stared imaging and the big viewing field scanned imagery, and both can be used for infrared target detection and thermal imaging scouting.

Description

Large field of view scanning thermal imaging system based on staring imaging technical field The invention relates to a large field of view thermal imaging system. Background technique At present, due to the limitation of the development process of the thermal detector array, the contradiction between the field of view and the spatial resolution of the thermal imaging system has always been prominent. In order to realize target detection or imaging detection with a large field of view on the basis of staring imaging, the object-side scanning method is usually used, that is, a plane mirror that can swing within a certain angle range is added in front of the imaging lens to change the line of sight of the staring imaging system. direction to achieve the purpose of scanning. However, for some specific use cases, such as some guided weapon systems, it is difficult to add a scanning mechanism in front of the imaging objective lens, so that the field of view and spatial resolut...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problem of conflict between field of view and spatial resolution in existing thermal imaging systems, and to provide a large field of view scanning thermal imaging system based on staring imaging

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