Automatic focusing control system for electric lens of digital camera

Abstract

The invention discloses an automatic focusing control system for an electric lens of a digital camera. The automatic focusing control system is characterized by comprising an electric lens part and a digital camera part, wherein the optical imaging signal output end of an optical lens in the electric lens part is connected with the signal input end of an image sensor in the digital camera; a motor in the electric lens part is connected with the optical lens; the electronic imaging signal output end of the image sensor in the digital camera part is connected with the signal input end of a central processor; and the signal output end of the central processor is connected with the signal input end of the motor in the electric lens part. The automatic focusing control system has the advantages that: automatic focusing of a uniform electric lens is realized by a standard RS-485 focusing control motor; a precise, real-time and automatic focusing function can be realized easily by upgrading a camera firmware without changing hardware and functions of the standard electric lens in the market and modifying a hardware design of the camera; the precision is improved and the cost is reduced; and the automatic focusing control system is in accordance with an intelligent tendency of development of the digital camera.

Description

technical field [0001] The invention relates to an automatic focusing control system of an electric lens of a digital camera, belonging to the technical field of digital cameras. Background technique [0002] In recent years, with the increasing demand for domestic and foreign aerospace, flood control and riot control, road and railway, ecological monitoring, forest fire prevention, maritime management, oil field factory and mine monitoring, the demand for long focal length and large zoom electric lens is also unprecedentedly high. Electric zoom As an important component, lens plays a vital role in video surveillance equipment. The monitoring range needs to be extended from hundreds of meters to several kilometers. As a result, the demand for the focal length of the lens is also increasing, from 100mm to 750mm or longer. For zoom lenses with a focal length of less than 100mm, as long as the camera and lens back focus are adjusted, there is almost no need to focus on the mo...

AI Technical Summary

Problems solved by technology

However, auto-focus lenses require special sensors such as CMOS or CCD image sensors and high-speed image processing chips, which not only increases the complexity and cost of the lens, but also brings potential problems to the reliability and stability of the lens.

Moreover, such a lens is a special lens, not a standard lens in the industrial market, the price is very expensive, and the industry has not promoted it on a large scale

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