Lens module

Abstract

A lens module, which includes a lens barrel and a lens holder, the outer surface of the lens barrel is provided with an external thread, the lens holder is used to accommodate the lens barrel, and the lens barrel is provided with an external thread along the direction of the optical axis The first positioning structure is connected, the first hollow cylinder is located on the screw-in side of the lens barrel, the lens base is provided with a second positioning structure along the optical axis, and the outer surface of the lens barrel is provided with at least one concave Grooves, each groove extends axially and penetrates the external threaded portion of the lens barrel, and the second positioning structure is provided with a protrusion corresponding to the at least one groove. The first and second positioning structures align the lens barrel and the lens base before being locked, so as to avoid damage to the threads of the lens barrel and the lens base or even damage to the lens barrel and the lens base itself.

Description

technical field [0001] The invention relates to a lens module, in particular to a lens module capable of positioning and locking a lens barrel and a lens base. Background technique [0002] Lens modules are widely used in cameras or optical instruments, and generally consist of a lens barrel, a lens mount, and optical elements in the lens barrel. In the production process of the lens module, the optical elements such as the lens, the support column, the spacer ring and the optical filter are sequentially assembled into the lens barrel, and then the lens barrel is screwed into the lens holder. figure 1 It is a lens module 100, which includes a lens base 12, a lens barrel 14 and a focusing ring 15. One end of the lens base 12 is provided with a bottom plate 16, and the outer wall of the lens barrel 14 and the inner wall of the lens base 12 are provided with threads, and the lens barrel 14 is threaded Fit and screw into the mirror holder 12 and fix it. [0003] When the lens ...

AI Technical Summary

Problems solved by technology

[0003] When the lens holder 14 is locked into the lens barrel 16, since the thread provided on the outer wall of the lens barrel 14 has a certain angle of inclination, when the lens holder 12 contacts the lens barrel 14, the lens will be formed. The base 12 is tilted to a certain degree, which will cause the positioning of the mirror base 12 and the lens barrel 14 to be tilted and shaken in a large range before locking, and then the locking action cannot be performed.

like figure 2 As shown, at this time, it is difficult to align the thread corresponding to the lens barrel during the locking process of the lens base, which increases the difficulty of locking, and thus consumes a lot of manpower and time for the process of positioning and locking the lens barrel and the lens base. At the same time, due to the misalignment of the lens barrel and the lens base, the thread of the lens barrel and the lens base will be damaged when locked, and even the lens barrel and the lens base will be damaged. These phenomena will affect the production efficiency and production of the camera module. Yield

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