A lens position fine-tuning device for a multi-lens panoramic camera

Abstract

The invention discloses a lens position fine-tuning device for a multi-lens panoramic camera. The upper end of the frame is movably connected with the lens position fine-tuning module of the support frame. The present invention is simple in structure and compact in design. By rotating the micro-motion gear to drive the micro-motion rack to move forward and backward in a straight line, the fine-tuning operation of the front and rear positions of multiple lenses can be realized, which is convenient and flexible, and has high adjustment accuracy. Fine-tuning can effectively reduce the distance error between each lens in the imaging system of the panoramic camera and the sensor, and improve the calibration accuracy of the panoramic camera.

Description

technical field [0001] The invention belongs to the technical field of lens adjustment, in particular to a lens position fine-tuning device of a multi-lens panoramic camera. Background technique [0002] With the development of science and technology, the urgent need for large field of view imaging has promoted the development of panoramic camera technology, and panoramic camera calibration technology has become a research hotspot. On the one hand, the calibration technology of panoramic camera involves the calibration method of panoramic camera. On the one hand, it involves the imaging system of the panoramic camera. At present, the fisheye lens imaging system is used more in the calibration technology of the panoramic camera. The difference between the fisheye lens imaging system and the traditional perspective mirror imaging system is the difference in the lens structure. , the fisheye lens is a special wide-angle lens with a very short focal length. The focal length rang...

AI Technical Summary

Problems solved by technology

[0002] With the development of science and technology, the urgent need for large field of view imaging has promoted the development of panoramic camera technology, and panoramic camera calibration technology has become a research hotspot. On the one hand, the calibration technology of panoramic camera involves the calibration method of panoramic camera. On the one hand, it involves the imaging system of the panoramic camera. At present, the fisheye lens imaging system is used more in the calibration technology of the panoramic camera. The difference between the fisheye lens imaging system and the traditional perspective mirror imaging system is the difference in the lens structure. , the fisheye lens is a special wide-angle lens with a very short focal length. The focal length range is roughly between 6mm and 16mm. The imaging system built with the fisheye lens can obtain scene images of the hemisphere or even the hyper-hemispheric airspace. In the process of image calibration , the first thing we need to ensure is that the center points of multiple lenses are on the same level, and the second is to ensure that the distance between each lens and the sensor is the same. However, since the lens uses threaded focusing, there are human error effects, and It is also difficult to determine a standard for the clarity of the image, so it is easy to cause errors in the distance between each lens and the sensor when adjusting the lens, which will eventually affect the calibration accuracy of the panoramic camera

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