Lens module

Abstract

The invention provides a lens module which comprises a lens seat, a lens cone and an elastic element, wherein, the lens seat is provided with a first thread; the lens cone is contained in the lens seat and provided with a second thread which is in loose fit with the first thread of the lens seat; and the elastic element is arranged between the lens seat and the lens cone and used for providing anelastic force along the direction parallel to a central axis of the lens module so that the first thread is contacted with the second thread to fix the lens seat and the lens cone.

Description

Technical field [0001] The invention relates to the field of optical systems, in particular to a lens module with easy control of the torque between the lens barrel and lens holder. Background technique [0002] With the rapid development of multimedia technology, digital cameras, camcorders and mobile phones with cameras are becoming more and more popular among consumers. While people put forward higher requirements on the image quality of objects captured by digital cameras, camcorders and mobile phone cameras, The demand for products such as digital cameras, video cameras and mobile phones with cameras is also increasing. In photographic devices such as digital cameras, video cameras, and mobile phone cameras, the lens module is an indispensable component. [0003] The lens module usually includes a lens barrel, a lens holder, an optical imaging element, and an image sensor. The optical imaging element is contained in the lens barrel, and the image sensor is arranged in the le...

AI Technical Summary

Problems solved by technology

[0004] Generally speaking, the torque between the lens barrel and the lens base of the lens module is too small, that is, the external thread of the lens barrel and the internal thread of the lens base are too loose, which will easily cause the lens barrel and the lens base to separate from each other; Too much torque means that the outer thread of the lens barrel and the inner thread of the lens base are too tightly matched, which will cause the outer thread of the lens barrel and the inner thread of the lens base to wear each other, only the torque value between the lens barrel and the lens base is within a certain range The lens module is a qualified product

[0005] However, it requires high processing costs to form perfectly matched external threads and internal threads on the small lens barrel and lens holder, respectively.

Moreover, after the assembly of the lens module is completed, a torque test is required to eliminate the lens modules whose torque value between the lens barrel and the lens base is not within the specified range, which will consume a lot of manpower and material resources

In addition, the external thread of the lens barrel and the internal thread of the lens base will wear due to the interaction during the repeated assembly or disassembly of the lens module. The optical coupling between the imaging element and the image sensor affects the imaging quality of the lens module

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