Camera module, electronic device containing camera module and automatic focusing method

A technology for auto-focusing and electronic equipment, applied in the field of electronics, it can solve problems such as inability to accurately judge auto-focusing, and achieve the effects of reducing power consumption, improving response time, and starting and stopping positions accurately

Inactive Publication Date: 2013-07-03
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found in the process of implementing the present invention that only the method of writing the minimum drive current value and the maximum drive current value into the memory cannot accurately determine the start and stop positions of auto focus (AF, Auto Focus)

Method used

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  • Camera module, electronic device containing camera module and automatic focusing method
  • Camera module, electronic device containing camera module and automatic focusing method
  • Camera module, electronic device containing camera module and automatic focusing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] An embodiment of the present invention provides a camera module, which can perform auto-focus control according to received direction information of the camera module, and reduce power consumption while improving response time.

[0054] figure 1 It is a schematic diagram of the composition of the camera module of an embodiment of the present invention, please refer to figure 1 , the camera module consists of:

[0055] The memory 11 stores focus driving information when the camera module is in different directions.

[0056] Lens drive unit 12, which receives the direction information of the camera module sent by the sensor, calls the focus drive information corresponding to the direction information stored in the memory 11 according to the method information, and drives the lens group to perform autofocus according to the focus drive information ;

[0057] The lens group 13 performs automatic focusing according to the driving of the lens driving unit 12 .

[0058] In...

Embodiment 2

[0078] The embodiment of the present invention also provides an electronic device. Figure 5 is a schematic diagram of the composition of the electronic device, the electronic device includes a sensor and a camera module 51, and the camera module performs auto-focus control according to the direction information of the camera module sent by the sensor.

[0079] Please refer to Figure 5 , in one embodiment, the camera module includes:

[0080] a memory 511, which stores focus driving information of the camera module 51 in different directions;

[0081] A lens driving unit 512, which receives the direction information of the camera module 51 sent by the sensor, calls the focus drive information corresponding to the direction information stored in the memory 511 according to the direction information, and drives the lens group according to the focus drive information. auto focus;

[0082] The lens group 513 performs automatic focusing according to the driving of the lens driv...

Embodiment 3

[0087] The embodiment of the present invention also provides an automatic focusing method. Figure 6 It is a schematic diagram of the composition of the method, which is applied to an electronic device with a camera module, please refer to Figure 6 , the method includes:

[0088] Step 601: The lens driving unit of the camera module receives the direction information of the camera module sent by the sensor;

[0089] Wherein, after the sensor senses the direction of the camera module, it can be sent to the lens driving unit of the camera module. The sensor here may be a sensor of a camera module, or a sensor of the electronic device.

[0090] Step 602: According to the orientation information of the camera module, the lens driving unit of the camera module invokes the focus drive information corresponding to the orientation information stored in the memory of the camera module;

[0091] Wherein, the lens driving unit of the camera module calls the focus driving information c...

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Abstract

The invention provides a camera module, an electronic device containing the camera module and an automatic focusing method. The camera module conducts automatic focusing controlling according to received direction information of the camera module, and the camera module comprises a storer, a lens driving unit and a lens group. The storer is used for storing focusing driving information of different directions of the camera module, according to sensed direction of the camera module by a sensor, the lens driving unit calls focusing driving information, corresponding to the direction, stored in the storer, according to the focusing driving information, the lens driving unit drives the lens group to conduct automatic focusing, and according to driving of the lens driving unit, the lens group conducts automatic focusing. The camera module is more accurate in recording of the automatic focusing beginning position and stopping position or the presetting position, improves responding time, and simultaneously reduces power source consumption.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a camera module, electronic equipment including the module and an automatic focusing method. Background technique [0002] With the rapid development of electronic technology and communication technology, some electronic devices, such as mobile phones, have become an indispensable part of people's daily life. It incorporates many functions and brings great convenience to people's life and work. Wherein, a camera module for taking pictures or taking pictures becomes an indispensable part of these electronic devices. [0003] At present, there is a camera module that uses a VCM (Voice Coil Motor, Voice Coil Motor) as a lens drive unit to drive the lens group (hereinafter referred to as the lens) for autofocus, and uses the VCM for autofocus. DOF (depth of focus , depth of field) usually ranges from infinity to 10 cm. Different DOFs correspond to different lens positions, and each posit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/09G02B7/28G03B13/36
CPCG02B7/28G03B3/10G02B7/04H04N23/67
Inventor 葛崇钊崔智元杨清发
Owner SONY ERICSSON MOBILE COMM AB
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