Large-zoom-ratio continuous mixed zoom infrared thermal imager

Abstract

The invention discloses a large-zoom-ratio continuous hybrid zoom infrared thermal imager, which enables optical zoom and electronic zoom to be linked, and after an infrared optical system completes optical zoom, electronic zoom is linked, so that the purpose of hybrid large-zoom-ratio zoom is achieved. The optical zoom and electronic zoom linkage implementation mode comprises the steps that a potentiometer is installed on an infrared thermal imaging lens, the potentiometer records the focal length position of optical zoom, and when the change of the optical zoom from a small focal length to alarge focal length is completed and the optical zoom reaches a potentiometer voltage value corresponding to the maximum focal length, electronic zoom is triggered; and when the change of the opticalzoom from the large focal length to the small focal length is completed, triggering the optical zoom when the electronic zoom reaches the potentiometer voltage value corresponding to the minimum focallength. According to the invention, the purpose of hybrid large zoom ratio zoom is achieved through a mode of linking optical zoom with electronic zoom, a target can be ensured not to be lost duringpositioning, and the infrared thermal imager is simple and practical.

Description

technical field [0001] The invention relates to an infrared thermal imager, in particular to a large zoom ratio continuous hybrid zoom infrared thermal imager, which belongs to the technical field of infrared thermal imaging. Background technique [0002] Limited by the large pixel size of the infrared thermal imaging detector, most of the previous infrared thermal imaging zoom systems only use optical zoom, because the actual observation effect of the image after the electronic zoom is not large, and the image mosaic phenomenon is serious. With the continuous reduction of the pixel size of infrared thermal imaging detectors, the electronically zoomed images have practical observation significance. Compared with the visible light zoom system, the infrared thermal imaging zoom system has a relatively small magnification, and the magnification of the target is limited. Moreover, the optical zoom and electronic zoom of the traditional infrared thermal imaging zoom system canno...

AI Technical Summary

Problems solved by technology

Compared with the visible light zoom system, the infrared thermal imaging zoom system has a relatively small magnification, and the magnification of the target is limited

Moreover, the optical zoom and electronic zoom of the traditional infrared thermal imaging zoom system cannot be linked. The picture is blurry, easy to lose the target

Images