Optical image stabilization module and camera module

Abstract

The present invention relates to an optical image stabilization module and a camera module capable of performing an image stabilization operation even if noise is generated. The optical image stabilization module and the camera module according to an embodiment of the present invention may include: a preprocessing section, An error value is calculated based on the difference between the lens shift value detected by the hall sensor and the shake value detected by the gyro sensor, and if the error value is above a reference value, the lens shift value or the One of the error values ​​is replaced with a set value; the controller controls the movement of the lens according to the error value received from the pre-processing unit, so that the captured image becomes stable.

Description

technical field [0001] The present invention relates to an optical image stabilization module and a camera module including the same. Background technique [0002] In recent mobile devices, the camera is one of the basic functions, and with the improvement of its performance, the products on the market are equipped with high-performance cameras with millions of pixels or even more than 10 million pixels. [0003] However, compared to such cameras with high pixels, the space occupied by the camera module can only be limited due to constraints of mobile devices. [0004] Therefore, due to the smaller lens aperture and smaller image pixel size, etc., external vibrations or slight movements such as hand shaking may also cause image degradation when capturing images. [0005] In order to suppress the image degradation caused by the above-mentioned subtle shakes and obtain clearer images, an Optical Image Stabilization (OIS: Optical Image Stabilization) module that provides shake...

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Problems solved by technology

[0003] However, compared to such a camera with high pixels, the space occupied by the camera module can only be limited due to the constraints of mobile devices

[0004] Therefore, due to the smaller lens aperture and smaller image pixel size, etc., external vibrations or subtle movements such as hand shaking may also cause image degradation when capturing images

[0005] In order to suppress the image degradation caused by the above-mentioned subtle shakes and obtain clearer images, an Optical Image Stabilization (OIS: Optical Image Stabilization) module that provides shake correction functions optically is mainly used. The image stabilization module has a problem that noise may occur during signal processing, making it impossible to perform stable operations

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