Lens module

Abstract

The invention relates to a lens module. The lens module comprises a lens barrel and a lens seat which is matched with the lens barrel. The lens barrel has a first end part which is provided with a light inlet and a second end part relative to the first end part. The inner circumferential surface of the lens seat is provided with a threaded part protruding inwardly and a matching part which is adjacent to the threaded part, and the threaded part is provided with inner threads. The outer circumferential surface of the first end part of the lens barrel is provided with outer threads, and the outer threads are matched with the inner threads of the lens seat. The outer circumferential surface of the second end part of the lens barrel is provided with a flange protruding radially outwards along the lens barrel, and the flange is matched with the matching part of the inner circumferential surface of the lens seat. The lens barrel is matched with the inner threads of the lens seat through the outer threads of the first end part.

Description

technical field [0001] The invention relates to an optical system, in particular to a lens module. Background technique [0002] With the development of camera technology, lens modules are widely used in camera devices for various purposes, among which fixed-focus lens modules are the favorite of camera professionals. A traditional fixed-focus lens module generally includes a lens barrel, a lens holder, a lens group housed in the lens barrel, a spacer ring, an optical filter, and the like. [0003] Please also refer to image 3 and Figure 4 , is a schematic diagram of the lens barrel 101 and the lens base 102 in the conventional lens module 10 . Wherein, the outer peripheral surface of the lens barrel 101 is provided with external threads to match the internal threads of the lens holder 102. When assembling the lens module 10, the assembly of the lens holder 102 and the lens barrel 101 is generally to fix the lens holder 102 first, and then rotate the lens barrel 101. , ...

AI Technical Summary

Problems solved by technology

[0004] The lens barrel 101, lens holder 102 and their assembly method of the described structure are easy to fall into the storage of the lens barrel 101 due to the thread fragments produced by friction when the external thread of the lens barrel 101 and the internal thread of the lens holder 102 are assembled. Between the components (not shown in the figure), the adjacent lens or infrared filter will adhere to foreign matter, which will easily affect the imaging effect of the lens when assembling the lens module, thereby affecting the production rate of the lens module

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