Optical image stabilization module and camera module

Abstract

The invention provides an optical image stabilization module and a camera module, wherein an image stabilization operation can be performed even noise is generated. The optical image stabilization module and the camera module according to one embodiment of the invention can comprise the components of a preprocessing part which calculates a difference value based on a difference between a lens movement value that is detected through a Hall sensor and a jitter value that is detected through a gyroscope sensor, and supplies a preset coefficient when the different value is above a reference value; and a controller which makes the lens move according to the coefficient received from the preprocessing part and the error value, thereby stabilizing a photographed image.

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 hand shake and obtain a clearer image, an Optical Image Stabilization (OIS: Optical Image Stabilization) module that optically...

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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 hand shake and obtain a clearer image, an Optical Image Stabilization (OIS: Optical Image Stabilization) module that optically provides a hand shake correction function is mainly used. However, this Optical image stabilization modules have a problem that noise may occur during signal processing, making it impossible to perform stable operations

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