Camera module

Abstract

The invention provides a camera module, comprising a circuit board, an image sensor, a processor, a displacement sensor and a lens module, wherein the image sensor is arranged on the circuit board; the displacement sensor is used for sensing the offset of the image sensor corresponding to an object to be shot; the lens module comprises a first side face, a second side face, a first wire, a second wire and a plurality of flexible supports; the first side face and the second side face are fixedly provided with a first magnet and a second magnet respectively; the first wire and the second wire are respectively arranged corresponding to the first magnet an the second magnet and are fixed corresponding to the image sensor; the lens module is supported on the circuit board through the flexible supports; and the processor controls the current in the first wire and the second wire to enable the lens module to move due to the reacting force of ampere force applied on the first magnet and the second magnet, therefore the images of the object to be shot are always at the same position of the image sensor.

Description

technical field [0001] The invention relates to the technical field of camera modules, in particular to a camera module with an optical anti-shake function. Background technique [0002] The camera module uses the shutter to control the length of time that the light is projected to the image sensor. For example, when the shutter speed is 1 / 2 second, it means that the time for the image sensor to receive light is 1 / 2 second. If within this 1 / 2 second When the same beam of light moves on the image sensor due to shaking, the image sensor will record the movement track of the light, making the captured photo blurred. In order to compensate for the light offset caused by shaking, camera modules using image stabilization systems to prevent shaking began to appear in the 1990s. For details, please refer to the paper "Optical image stabilization for digital cameras" published by Cardani B. et al. in Control Systems Magazine, IEEE (Volume 26, Issue 2, Page(s): 21-22) in April 2006. ...

AI Technical Summary

Problems solved by technology

Lens anti-shake mainly refers to setting a special anti-shake compensation lens group in the lens module. According to the shake direction and degree of the camera module, the position and angle of the compensation lens group are adjusted accordingly to keep the optical path stable, but adding compensation lens groups will increase The total height of the camera module in the direction of the optical axis is not conducive to the thinning of the camera module

Imaging device anti-shake mainly refers to changing the position or angle of the image sensor to maintain the stability of imaging after sensing the shake of the camera module, but the anti-shake of the imaging device requires a high-precision mechanism to change the position or angle of the image sensor , correspondingly greatly increasing the manufacturing cost of the camera module

Images