Lens module

Abstract

The invention relates to a lens module which is particularly applicable to products such as mobile phones, notebook computers, personal assistants, automobiles, and the like. The lens module comprisesa lens barrel, a hollow cavity with an opening, a bottom surface, a peripheral side wall, a lens seat, a sealing ring and a lens, wherein the bottom surface and the peripheral side wall form the hollow cavity; the inner side wall of the peripheral side wall is provided with an inner thread; the bottom surface is provided with at least one groove; the lens seat is provided with a peripheral side wall with an outer side wall provided with an outer thread; the inner side wall extends to form an annular lug boss, and the sealing ring is arranged on the annular lug boss; the lens is provided withat least one protrusion embedded with the groove; through the embedding of the protrusion and the groove, the lens is fixed in the hollow cavity of the lens barrel; the lens barrel and the lens seat are screwed into a whole through the inner thread and the outer thread; and the lens tightly contacts with the sealing ring. The lens can be shortened during preventing dust and focusing.

Description

technical field [0001] The invention relates to a lens module, in particular to a lens module used in electronic products such as mobile phones, notebooks and personal digital assistants (Personal Digital Assistant, PDA). Background technique [0002] Lens modules are currently widely used in products with camera functions, such as mobile phones, PDAs, notebooks, cars, etc. The development of lens modules is extremely rapid, and the market demand is increasing day by day. [0003] During the focusing process of the lens module after assembly, it is necessary to carefully find the best focusing position. If it is manual focusing, it is slow to find the best focusing position; if it is automatic focusing, it needs to be assembled and removed on complex jig equipment before and after focusing. Either way, both focusing methods take a considerable amount of time to complete, and there is a risk of running out of focus. In addition, during the process of assembling, focusing a...

AI Technical Summary

Problems solved by technology

[0006] However, this solution does not avoid long focusing time, and, in the two-stage lens barrel, the first lens barrel is equipped with lenses, and the second lens barrel is equipped with external threads to prevent dirt and debris from falling into the inner layer to contaminate the image quality

However, in order to ensure the occlusal strength of the screw teeth, the second lens barrel cannot be made too short, which limits the height of the lens module and cannot be made shorter

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