CN104503188A - Automatic focusing module and mobile equipment - Google Patents
Automatic focusing module and mobile equipment Download PDFInfo
- Publication number
- CN104503188A CN104503188A CN201410856473.1A CN201410856473A CN104503188A CN 104503188 A CN104503188 A CN 104503188A CN 201410856473 A CN201410856473 A CN 201410856473A CN 104503188 A CN104503188 A CN 104503188A
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- China
- Prior art keywords
- module
- auto
- focusing
- driving instruction
- corresponding relation
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2213/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
Abstract
The invention discloses an automatic focusing module which comprises an obtaining module for obtaining a distance between a shot object and an automatic focusing module, a searching module for searching a driving instruction which corresponds to the distance from a corresponding relation database according to the distance between the shot object and the automatic focusing module and is an instruction for controlling a lens of the automatic focusing module to reach a focal position, and a responding module for responding the driving instruction to finish focusing. The automatic focusing module provided by the invention only needs to directly obtain the driving instruction according to the measured distance without the operation of searching a clear point, and the focusing speed is increased. The invention also discloses mobile equipment.
Description
Technical field
The present invention relates to camera technique field, particularly relate to a kind of auto-focusing module and mobile device.
Background technology
Current high-end handsets to focusing speed and accuracy requirement more and more higher, can realize auto-focusing in mobile phone.The principle of auto-focusing makes image can blur-free imaging by automatic dollying head.
What on current mobile phone, auto-focusing module adopted is contrast formula focusing mode.Contrast formula focusing mode looks for best focal point based on camera lens picture of imaging on diverse location is variant, camera lens is driven by a motor and advances towards certain direction, when on lens moving to a certain position, the data analysis in certain region of current image is calculated, obtain the value of an energy Relative quantification sharpness, and record the position of camera lens simultaneously, camera lens obtains one group of numerical value after being continued mobile multistage distance, find the lens location that the maximal value of this group numeral is corresponding, drive camera lens to get back to this position and finally realize auto-focusing.When adopting this kind of mode to focus, usual shooting one clearly scenery spends the time of about 1s approximately.Main time is wasted on search articulation point, and its focusing speed is slower.
Therefore, provide a kind of can promote focusing speed auto-focusing module and mobile device be necessary.
Summary of the invention
The object of this invention is to provide a kind of auto-focusing module and mobile device, object is to solve existing auto-focusing module and focuses slow problem.。
For solving the problems of the technologies described above, the invention provides a kind of auto-focusing module, comprising:
Acquisition module, for obtaining the distance between subject to described auto-focusing module;
Search module, for by the distance between described subject and described auto-focusing module, search with described apart from corresponding driving instruction in corresponding relation database, described driving instruction is the instruction that the camera lens controlling described auto-focusing module reaches focal position;
Respond module, for responding described driving instruction, to complete focusing.
Alternatively, also comprise:
Set up module, for setting up described corresponding relation database, described corresponding relation database comprises the corresponding relation between distance between subject to described module and described driving instruction.
Alternatively, described module of setting up comprises for setting up described corresponding relation database:
Described set up module specifically for, calculate the corresponding relation between described distance and described driving instruction by the field depth characteristic of described camera lens.
Alternatively, described module of setting up comprises for setting up described corresponding relation database:
Described set up module specifically for, obtain the corresponding relation between described distance and described driving instruction by actual measurement.
Alternatively, described acquisition module is specially laser ranging chip;
Described laser ranging chip according to described subject in the distance described in the phase difference calculating of described chip internal imaging between subject to described module.
Alternatively, described driving instruction is the instruction of the liquid crystal arrangement driving LCD lens inside in described auto-focusing module.
Alternatively, described respond module, for responding described driving instruction, comprises to complete focusing:
Described respond module specifically for, the motor in described LCD lens drives the liquid crystal arrangement of described LCD lens inside, reaches the position of focus.
Present invention also offers a kind of mobile device, described mobile device comprises camera and for driving the motor of described camera movement, also comprises the auto-focusing module described in above-mentioned any one.
Alternatively, described mobile device is camera or mobile phone.
Auto-focusing module provided by the present invention, by obtaining the distance between subject to auto-focusing module, then searching with described apart from corresponding driving instruction, and responding described driving instruction, can complete focusing in corresponding relation database.Visible, auto-focusing module provided by the present invention only needs the distance according to recording directly to obtain driving instruction, without the need to carrying out the operation finding search articulation point again, thus improves the speed of focusing.Present invention also offers a kind of mobile device.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of embodiment of auto-focusing module provided by the present invention;
Fig. 2 is the structured flowchart of the another kind of embodiment of auto-focusing module provided by the present invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, this module comprises the structured flowchart of a kind of embodiment of auto-focusing module provided by the present invention:
Acquisition module 11, for obtaining the distance between subject to described auto-focusing module;
Search module 12, for by the distance between described subject and described auto-focusing module, search with described apart from corresponding driving instruction in corresponding relation database, described driving instruction is the instruction that the camera lens controlling described auto-focusing module reaches focal position;
Respond module 13, for responding described driving instruction, to complete focusing.
Auto-focusing module provided by the present invention, by obtaining the distance between subject to auto-focusing module, then searching with described apart from corresponding driving instruction, and responding described driving instruction, can complete focusing in corresponding relation database.Visible, auto-focusing module provided by the present invention only needs the distance according to recording directly to obtain driving instruction, without the need to carrying out the operation finding search articulation point again, thus improves the speed of focusing.
The structured flowchart of the another kind of embodiment of auto-focusing module provided by the present invention as shown in Figure 2, compared with a upper embodiment, adds the module setting up corresponding relation database in advance in the present embodiment.It is pointed out that the auto-focusing module that the present embodiment provides can be used in mobile device.Above-mentioned mobile device can be other mobile terminals such as digital camera, or mobile phone.
Particularly, this module comprises:
Set up module 21, for setting up described corresponding relation database, described corresponding relation database comprises the corresponding relation between distance between subject to described module and described driving instruction.
Particularly, the corresponding relation between described distance and described driving instruction is calculated by the field depth characteristic of camera lens.In addition, by the method for actual measurement, the corresponding relation between object to be shot to the distance and driving instruction of auto-focusing module can also be obtained.
It is pointed out that other can obtain the method between object distance and driving instruction, be not limited to as above two kinds of methods.This corresponding relation database can be preserved after foundation, be preset in the mainboard chip of mobile device described above.
Acquisition module 22, for obtaining the distance between subject to described auto-focusing module;
As a kind of preferred implementation, the present embodiment specifically can adopt the laser ranging chip with laser ranging function, according to described subject in the distance described in the phase difference calculating of described chip internal imaging between subject to described module.This chip can be placed in above-mentioned mobile device equally.
It is pointed out that other can obtain the equipment of the distance between subject to auto-focusing module, this does not affect realization of the present invention.Other chips that can find range, are not limited to laser ranging chip, and this does not affect realization of the present invention yet.
Search module 23, for by the distance between described subject and described auto-focusing module, search with described apart from corresponding driving instruction in corresponding relation database, described driving instruction is the instruction that the camera lens controlling described auto-focusing module reaches focal position;
Distance between the subject obtained by acquisition module to auto-focusing module, in corresponding relation database, searches the driving instruction that its camera lens of control corresponded arrives focal position.Particularly, this driving instruction can be the liquid crystal arrangement one-tenth convex lens to a certain degree of the LCD lens inside in driving auto-focusing module, to reach the instruction of focusing object.
Respond module 24, for responding described driving instruction, to complete focusing.
Particularly, the liquid crystal arrangement of camera lens inside is driven by the motor in LCD lens, to arrive the position of focus.
Auto-focusing module provided by the present invention, by the distinctive field depth characteristic of camera lens or by actual measurement, obtains the corresponding relation of the driving instruction that camera lens object distance exports with the driving chip driving LCD lens to arrange.Client is when calling, distance between the subject acquired by range finding chip to auto-focusing module, search in corresponding relation database with described apart from corresponding driving instruction, and send this driving instruction to LCD lens, make the liquid crystal arrangement one-tenth convex lens to a certain degree of LCD lens inside, find focus, thus reach the object of focusing.Visible, auto-focusing module provided by the present invention only needs the distance according to recording directly to obtain driving instruction, without the need to carrying out the operation finding search articulation point again, thus improves the speed of focusing.
In addition, present invention also offers a kind of mobile device, comprise auto-focusing module as above.This mobile device can be specially camera or mobile phone.
Mobile device provided by the present invention, by obtaining the distance between subject to auto-focusing module, then searching with described apart from corresponding driving instruction, and responding described driving instruction, can complete focusing in corresponding relation database.Visible, mobile device provided by the present invention only needs the distance according to recording directly to obtain driving instruction, without the need to carrying out the operation finding search articulation point again, thus improves the speed of focusing.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an auto-focusing module, is characterized in that, comprising:
Acquisition module, for obtaining the distance between subject to described auto-focusing module;
Search module, for by the distance between described subject and described auto-focusing module, search with described apart from corresponding driving instruction in corresponding relation database, described driving instruction is the instruction that the camera lens controlling described auto-focusing module reaches focal position;
Respond module, for responding described driving instruction, to complete focusing.
2. auto-focusing module as claimed in claim 1, is characterized in that, also comprise:
Set up module, for setting up described corresponding relation database, described corresponding relation database comprises the corresponding relation between distance between subject to described module and described driving instruction.
3. auto-focusing module as claimed in claim 2, it is characterized in that, described module of setting up comprises for setting up described corresponding relation database:
Described set up module specifically for, calculate the corresponding relation between described distance and described driving instruction by the field depth characteristic of described camera lens.
4. auto-focusing module as claimed in claim 2, it is characterized in that, described module of setting up comprises for setting up described corresponding relation database:
Described set up module specifically for, obtain the corresponding relation between described distance and described driving instruction by actual measurement.
5. auto-focusing module as claimed in claim 1, it is characterized in that, described acquisition module is specially laser ranging chip;
Described laser ranging chip according to described subject in the distance described in the phase difference calculating of described chip internal imaging between subject to described module.
6. auto-focusing module as claimed in claim 1, is characterized in that, described driving instruction is the instruction of the liquid crystal arrangement driving LCD lens inside in described auto-focusing module.
7. auto-focusing module as claimed in claim 6, it is characterized in that, described respond module, for responding described driving instruction, comprises to complete focusing:
Described respond module specifically for, the motor in described LCD lens drives the liquid crystal arrangement of described LCD lens inside, reaches the position of focus.
8. a mobile device, described mobile device comprises camera and for driving the motor of described camera movement, it is characterized in that, comprises the auto-focusing module described in any one of claim 1 to 7.
9. mobile device as claimed in claim 8, it is characterized in that, described mobile device is camera or mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410856473.1A CN104503188A (en) | 2014-12-31 | 2014-12-31 | Automatic focusing module and mobile equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410856473.1A CN104503188A (en) | 2014-12-31 | 2014-12-31 | Automatic focusing module and mobile equipment |
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| CN104503188A true CN104503188A (en) | 2015-04-08 |
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| CN201410856473.1A Pending CN104503188A (en) | 2014-12-31 | 2014-12-31 | Automatic focusing module and mobile equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931957A (en) * | 2015-06-01 | 2015-09-23 | 广东欧珀移动通信有限公司 | Distance measurement method and device based on mobile terminal |
| CN105891812A (en) * | 2015-11-15 | 2016-08-24 | 乐视移动智能信息技术（北京）有限公司 | Distance measurement method, device and terminal device |
| WO2017054752A1 (en) * | 2015-09-30 | 2017-04-06 | 努比亚技术有限公司 | Method and device for correcting focal point and method and device for implementing focusing |
| CN106873124A (en) * | 2016-12-27 | 2017-06-20 | 广东工业大学 | A kind of method for automatically adjusting focal length |
| CN107682691A (en) * | 2017-09-12 | 2018-02-09 | 深圳市金立通信设备有限公司 | A kind of method, terminal and the computer-readable recording medium of camera focus calibration |
| CN112291469A (en) * | 2018-07-23 | 2021-01-29 | 深圳市真迈生物科技有限公司 | Imaging method, device and system |
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| CN101281289A (en) * | 2007-12-29 | 2008-10-08 | 青岛海信电器股份有限公司 | Automatic focusing method |
| CN103048765A (en) * | 2012-12-18 | 2013-04-17 | 天津三星光电子有限公司 | Camera focusing device and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931957A (en) * | 2015-06-01 | 2015-09-23 | 广东欧珀移动通信有限公司 | Distance measurement method and device based on mobile terminal |
| WO2017054752A1 (en) * | 2015-09-30 | 2017-04-06 | 努比亚技术有限公司 | Method and device for correcting focal point and method and device for implementing focusing |
| CN105891812A (en) * | 2015-11-15 | 2016-08-24 | 乐视移动智能信息技术（北京）有限公司 | Distance measurement method, device and terminal device |
| CN106873124A (en) * | 2016-12-27 | 2017-06-20 | 广东工业大学 | A kind of method for automatically adjusting focal length |
| CN107682691A (en) * | 2017-09-12 | 2018-02-09 | 深圳市金立通信设备有限公司 | A kind of method, terminal and the computer-readable recording medium of camera focus calibration |
| CN107682691B (en) * | 2017-09-12 | 2019-08-09 | 深圳市金立通信设备有限公司 | A kind of method, terminal and the computer readable storage medium of camera focus calibration |
| CN112291469A (en) * | 2018-07-23 | 2021-01-29 | 深圳市真迈生物科技有限公司 | Imaging method, device and system |
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Application publication date: 20150408 |