Lens module and camera device

Abstract

The invention discloses a lens module, which comprises a lens barrel, a main lens group, a focusing lens assembly and a magnet. The lens barrel is provided with a first surface, a second surface and an inner cavity arranged to pass through the first surface and the second surface. The main lens group is received in the inner cavity and is close to the first surface. The focusing lens assembly is received in the inner cavity and is close to the second surface. The focusing lens assembly comprises a focusing lens, a coil and a moving part. The focusing lens and the coil are fixed onto the moving part. The moving part is provided with a sliding bar. The inner wall of the lens barrel is provided with a sliding rail positioned corresponding to the sliding bar. The sliding bar is capable of sliding steadily along the sliding rail. The magnet is fixed to the lens barrel. When the coil is energized, the magnet is matched with the coil to generate a force for driving the coil to move in a direction parallel to the direction of the optical axis. By means of the lens module, the problems of the damage to a motor coil and a lens and the focus deviation phenomenon due to the generation of the twisting force during the locking assembly process of the motor coil and the lens in the prior art can be avoided. Meanwhile, the lens module is dust-free and pollution-free. At the same time, the lens is prevented from getting inclined. The invention also provides a camera device.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a lens module for imaging and an imaging device with the lens module. Background technique [0002] Electronic products such as mobile devices, computers, and electronic watches usually have a camera, which usually includes a lens, a filter, an image sensor and a circuit board. In order to obtain a clear image, the camera usually needs to focus, and the existing camera Most devices are equipped with an autofocus function. In the existing lens modules, autofocus usually uses the motor voice coil to move the entire lens to achieve the focus, and the motor voice coil and the lens are matched by screws. There are often the following problems: the motor voice coil and the lens When locking and matching, you need to pay great attention to the torque between the two. If the torque is too high, the voice coil motor will be damaged; because the lens of the lens and the part of the motor vo...

AI Technical Summary

Problems solved by technology

In the existing lens modules, autofocus usually uses the motor voice coil to move the entire lens to achieve the focus, and the motor voice coil and the lens are matched by screws. There are often the following problems: the motor voice coil and the lens When locking and matching, you need to pay great attention to the torque between the two. If the torque is too high, the voice coil motor will be damaged; because the lens of the lens and the part of the motor voice coil carrying the lens are usually made of polyester, the motor voice coil and the lens lock match When the torque exists, it is easy to generate dust, thereby contaminating the entire module; when the motor voice coil is locked with the lens, it is easy to tilt, which affects the imaging quality of the camera module

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