Variable aperture structure, camera module and electronic device

Abstract

The invention discloses a variable aperture structure, which comprises an aperture carrier, a driver, and an aperture-moving structure; the aperture carrier comprises a horizontal part and a verticalpart which are connected to each other, and the horizontal part is provided with a lens light hole; the driver is mounted on the aperture carrier, and is used for driving the aperture-moving structureto move on the horizontal part of the aperture carrier; the aperture-moving structure is provided with an aperture hole, the diameter of which is less than the diameter of the lens light hole, and the aperture-moving structure is movably mounted on the aperture carrier, and can be driven by the driver to move to the lens light hole, so that the luminous flux of a lens can be changed. According tothe variable aperture structure, the size is small, the structure is simple, and the reliability is high. The invention further discloses a camera module comprising the variable aperture structure, the size of the camera module is small, and the imaging quality is high. The invention further discloses an electronic device comprising the camera module, the electronic device is relatively thin, andhigher-quality pictures can be taken.

Description

technical field [0001] The present invention relates to an aperture structure, in particular to a variable aperture structure, a camera module based on the variable aperture structure, and electronic equipment based on the variable aperture structure and / or the camera module. Background technique [0002] As an essential part of a camera, the aperture can significantly improve the camera's photographic effect. Specifically, by adjusting the structural size of the aperture to control the amount of light passing through the lens, the depth of field of the camera can be controlled, and the background blur effect can be improved, thereby improving image quality. [0003] As electronic devices such as mobile phones and tablet computers become thinner and thinner, the size of the camera installed in the electronic device needs to be as small as possible to accommodate the thickness of the electronic device. In the prior art, in order to adapt to the thickness of the electronic de...

AI Technical Summary

Problems solved by technology

Although the size of the variable aperture structure is small, it still cannot meet the thickness requirements of some electronic devices, and has the following problems:

[0006] (1) Since the variable aperture structure is to control the rotation of the rotatable blade to a predetermined position to change the size of the aperture, the rotation is more complicated, which increases the difficulty and precision of the control of the rotation, that is, increases the demand for the control accuracy of the motor , which will increase the complexity and cost of the preparation process

[0007] (2) The magnet in the motor that controls the focus of the lens in the camera will generate a magnetic field, which can easily cause magnetic interference to the motor that controls the rotation of the rotatable blade, affecting the normal working state of the motor, and then affecting the control accuracy of the motor to the rotatable blade

[0008] (3) In order to maintain the position of the rotatable blades, the motor needs to be in working condition all the time, which will consume a lot of power

[0009] (4) When the rotating shaft is in a rotating state for a long time, or when it is subjected to vibration, it will cause the friction transition of the rotating shaft and the corresponding parts of the rotating shaft to loosen or shift, which will directly reduce the control accuracy of the rotatable blades and affect the service life of the rotating shaft

[0010] Therefore, the existing variable aperture structure is complex, easily damaged by vibration, and has poor reliability and stability. There is an urgent need for a variable aperture structure with a simple structure, small size, high resistance to vibration damage, and good stability and reliability.

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