Optical Image Stabilization Module And Camera Module

Abstract

The present invention relates to an optical image stabilization module and camera module which can execute the image stabilization operation even generating the noise. The optical image stabilization module and camera module according to one embodiment of the present invention, comprises a control part for controlling the position of a lens based on an error value of the difference between one of a lens position value or a desired position value and a jitter value detected by a gyroscope sensor to thereby stabilize an obtained image; a position value control part for calculating the desired position value to replace the detected lens position value on the condition that the difference between the lens position value detected by a Hall sensor and the control value of the control part or the difference between the detected lens position value and the jitter value, exceeds a reference range.

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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