Large-zoom ratio automatic focusing integrated camera

Abstract

The invention relates to a large-zoom ratio automatic focusing integrated camera, which belongs to the field of optical, mechanical and electronic integration. The camera comprises an automatic focusing system, a video drive system and a shell thereof. The camera adopts a contrast detection method to carry out automatic focusing, and a processor (108) of the automatic focusing system is utilized to send out control signals to acquire, process, calculate and compare image signals and processing signals to control a step motor (111) to drive a compensation assembly (G4) to move to a focusing position, so that the camera is automatically focused. The automatic focusing of the camera does not need an auxiliary light source, and cannot be affected by the distance of an object, the focusing process is controlled by the microprocessor, the time is short, the camera also has the function of video drive, and can automatically adjust an aperture according to environments, so the camera can be accurately, quickly and automatically focused under various environments, while the image cannot be distorted, and the camera can be widely applied to fields, such as expressways, air ports, finance, military, ports and the like.

Description

technical field [0001] The invention belongs to the field of optical-mechanical-electrical integration, and relates to an integrated camera used in the field of security monitoring, in particular to an integrated camera with a large zoom ratio and capable of automatic focusing within the zoom range. Background technique [0002] With the development of the security industry at home and abroad, people's requirements for security products are becoming increasingly stringent. Usually, surveillance lenses produced at home and abroad in the security industry include zoom lenses and fixed-focus lenses. Among them, the zoom range of the zoom lens, the controllability of focal length adjustment, and the degree of automation of lens aperture control all directly affect the performance and technical level of the product. At present, there are mainly two kinds of monitoring zoom lenses produced at home and abroad: manual zoom and electric zoom. It is inconvenient to install the manual...

AI Technical Summary

Problems solved by technology

However, due to the complexity, high requirements and great difficulty of automatic focusing technology, it has always been a bottleneck restricting the development of domestic all-in-one machines. In order to meet the use requirements, domestic highways, airports, financial fields, military, ports and other important fields mainly use Japanese-made automatic focusing technology. Focus all-in-one camera

Images