Two-stage type focusing lens structure

Abstract

A two-stage focusing lens structure, including a lens group and upper and lower coil seats sleeved on the lens group, the lens group is provided with a permanent magnet, and the upper and lower coil seats are respectively arranged on both sides of the permanent magnet, Coils are respectively wound on the winding parts of the upper and lower coil seats, and each coil seat extends outward from the winding parts to form a bottom plate, wherein the bottom plate of one coil seat is bent and extended to the bottom plate of the other coil seat to form at least one protrusion block, the permanent magnet is accommodated in the accommodating space formed between the bottom plate of the upper coil seat and the bottom plate of the lower coil seat, and when the coil is energized and excited to interact with the permanent magnet to drive the lens group to move, the The above-mentioned permanent magnet moves in the above-mentioned accommodation space, and the above-mentioned two-stage focusing lens structure can improve the precision of telescopic movement of the lens group, thereby improving the imaging quality of the focusing lens structure.

Description

technical field [0001] The invention relates to a two-stage focusing lens structure, in particular to a two-stage focusing lens structure suitable for a camera system. Background technique [0002] With the continuous development of science and technology and modern industry, photographic products such as portable digital cameras and camera phones have been widely used, so the quality of the focusing lens structure of the photographic system in these products has also attracted more and more attention from the industry. [0003] At present, a considerable part of the focusing lens structure of the camera system adopts two-stage optical focusing technology. In the existing two-stage focusing lens structure, the axial positioning of the lens group is generally realized by a spring, that is, the elastic force of the spring is used to realize the lens alignment. The telescopic movement of the group is used to achieve the purpose of focusing, but because the spring is prone to el...

AI Technical Summary

Problems solved by technology

[0003] At present, a considerable part of the focusing lens structure of the camera system adopts two-stage optical focusing technology. In the existing two-stage focusing lens structure, the axial positioning of the lens group is generally realized by a spring, that is, the elastic force of the spring is used to realize the lens alignment. The telescopic movement of the group is used to achieve the purpose of focusing, but because the spring is prone to elastic deformation due to external force, its external influence is greater, so it is difficult for the spring to control the travel of the lens, so that the lens group cannot be accurately aligned and the focus is reduced. The accuracy of the lens structure affects the quality of imaging, so it needs to be improved

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