Dual-axis anti-shake camera module and control method thereof

Abstract

The invention discloses a dual-axis anti-shake camera module. The dual-axis anti-shake camera module comprises a deflection structure combination, a camera module and a stable control combination; thedeflection structure combination comprises a casing, an upper elastic support body, a lower elastic support body, coils and permanent magnets; the camera module is embedded in the upper elastic support body and the lower elastic support body, and suspends in the casing; the coils are mounted on an outer wall of the camera module; the permanent magnets are disposed on the inner wall of the outer casing corresponding to the coils; and the bottom of the camera module is connected with the stable control combination. The invention also discloses a control method for a dual-axis anti-shake cameramodule, which uses an inertial sensor to sense the angular velocity of biaxial motion of an image sensor, obtains a driving output by running a feedback control algorithm, drives the coils to drive the image sensor to deflect, captures image data information, and performs data processing and output. The invention has the advantages of compact structure, small appearance, low cost, firmness and reliability, stable image performance, no image loss, and is suitable for motion photography.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a dual-axis anti-shake camera module and a control method thereof. Background technique [0002] The traditional camera will cause image shaking when it is in motion. In order to improve the image quality in motion, digital image stabilization, optical image stabilization and mechanical image stabilization are mainly adopted. [0003] Digital image stabilization generally analyzes the image, evaluates the amount of shaking, and cuts out a part of the image to achieve a relatively stable output. This method does not require additional mechanical components on the hardware, so it is low in cost and small in size, but the image effect is not good. [0004] Optical image stabilization is to drive some lenses in the camera lens to achieve image stabilization. The stabilization effect is good, but the effective angle range is small. [0005] Mechanical anti-shake uses a motor...

AI Technical Summary

Problems solved by technology

[0003] Digital image stabilization generally analyzes the image, evaluates the amount of shaking, and cuts out a part of the image to achieve a relatively stable output. This method does not require additional mechanical parts on the hardware, so it is low in cost and small in size, but the image effect is not good.

[0004] Optical image stabilization is to drive some lenses in the camera lens to achieve image stabilization. The stabilization effect is better, but the effective angle range is small

[0005] Mechanical anti-shake uses a motor to drive the entire camera to achieve overall stability. The stabilization effect is good and the deflection range is large. The disadvantage is that the entire stabilization system is relatively large.

[0006] Similar patents CN201611217668.7 and CN201610626639.X only move the lens assembly, while the imaging module, gyroscope sensor and base are fixedly connected, and the gyroscope sensor is placed on the base part to achieve anti-shake by detecting the deflection error and then feed-forward drive , very low performance

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