A lens module with focal length adjustment

Abstract

The invention discloses a lens module with adjustable focal length. A lens module with adjustable focal length includes a lens housing, a base and a connecting plate. The left end of the lens housing is provided with a deck, and the deck It is fixedly connected with the lens housing, the outer wall of the lens housing is provided with a focal length scale, the focal length scale is fixedly connected with the lens housing, and the right side of the focal length scale is provided with a focusing ring, and the focusing The ring is rotatably connected with the lens housing; by setting the lens holder, the lens holder is driven by a stepping motor, by setting a connecting plate on the outer wall of the lens holder, a fixed shell is arranged on the connecting plate, and a rotating shaft is arranged inside the fixed shell, and the rotation The shaft is slidably connected to the guide column, and the fixed shell is driven by the lens holder, so that the rotating shaft slides on the guide column, and the rotating shaft rotates on the fixed shell, so that the guide post and the fixed shell are not easy to shake, so that the lens can zoom more smoothly.

Description

technical field [0001] The invention belongs to the field of lens technology, and in particular relates to a lens module with focal length adjustment. Background technique [0002] At present, there are two main ways of lens zooming on the market, one is manual focusing, which is a focusing method that adjusts the camera lens by manually turning the focus ring so that the photos taken by the camera are clear. To a certain extent, it depends on the judgment of the human eye on the image on the focusing screen, the proficiency of the photographer, and even the vision of the photographer, resulting in inaccurate positioning of the manual focus method. Early SLR cameras and rangefinder cameras basically used manual focus. To complete the focusing operation, the current quasi-professional and professional digital cameras, as well as SLR digital cameras all have a manual focus function to meet different shooting needs. [0003] When the original lens module adjusts the focal leng...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a lens module with focal length adjustment, to solve the problem that when the lens module proposed in the above background technology adjusts the focal length, the stepping motor drives the lens base to move to focus. , is guided by the guide column, and the original guide column is only composed of one column, which is not conducive to the fixation of the lens base, and it is very easy to cause shaking and affect the shooting effect

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