Automatic focusing device and camera module

A technology for automatic focusing and installation space, which is applied in the direction of focusing devices, focusing devices, camera focusing devices, etc., and can solve the problems of time response efficiency degradation, time delay of automatic focusing function, limited design environment of devices, components and components, etc. To achieve the effect of improving the time response characteristics
CN112782829AActive Publication Date: 2021-05-11JAHWA ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JAHWA ELECTRONICS
Publication Date
2021-05-11

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Abstract

The invention relates to an automatic focusing device and a camera module, and the automatic focusing device comprises: a reflector, which is disposed at the rear side of a lens assembly and is configured to change the path of light passing through the lens assembly so as to enable the light to be oriented towards an image sensor; a bracket, to which the reflector is mounted, the bracket configured to linearly move in an optical axis direction; a housing configured to accommodate the carriage; and a driving unit configured to move the carriage such that a distance between the reflector and the lens assembly simultaneously changes with a distance between the reflector and the image sensor.
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Description

technical field

[0001] The present disclosure relates to an auto focus device and a camera module including the auto focus device, and more particularly, to an auto focus device for implementing an auto focus function by moving an optical system between a lens and an image sensor, and the like. Background technique

[0002] With the development of hardware technology for image processing and the increase in user demand for image capture, functions such as autofocus (AF) and optical image stabilization (OIS) have been applied to devices such as cellular phones and smartphones. camera modules for portable terminals and stand-alone camera devices.

[0003] An auto focus (AF) function (or, a function of automatically focusing) refers to generating a clear image at an image sensor (CMOS, CCD, etc.) positioned behind the lens by linearly moving a carriage having a lens in the direction of an optical axis. A function of the focal length of the subject.

[0004] In addition, an Op...

Claims

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