CN104216091A - Lens driving system and lens driving method - Google Patents
Lens driving system and lens driving method Download PDFInfo
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- CN104216091A CN104216091A CN201310212284.6A CN201310212284A CN104216091A CN 104216091 A CN104216091 A CN 104216091A CN 201310212284 A CN201310212284 A CN 201310212284A CN 104216091 A CN104216091 A CN 104216091A
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- current value
- eyeglass
- focusing position
- control module
- driver element
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Abstract
The invention provides a lens driving system used for driving a lens to a focus position. The lens driving system comprises a control unit and a driving unit connected with the control unit; the driving unit is coupled with the lens; the control unit is used for acquiring the focus position and determining the main current value that the driving unit needs to drive the lens to the focus position; the control unit is used for calculating multiple secondary current values gradually increasing in a stepped manner to the main current value according to the main current value and outputting the secondary current values gradually increasing to the driving unit; the driving unit is used for driving the lens to the focus position. The current values initially inputted into the driving unit are lowered, high vibration can be effectively prevented during starting of driving the lens, and stability in focusing is improved. The invention further provides a lens driving method.
Description
Technical field
The present invention relates to a kind of Driving technique, particularly a kind of eyeglass drive system and method.
Background technology
Traditional eyeglass drive system comprises a control module and a driver element be connected with described control module, such as, and voice coil motor.Described control module is used for exporting a drive current to described driver element.One eyeglass is urged to a focusing position according to described drive current by described driver element.But, when described drive current is larger, the vibration that described drive current suddenly obtains described drive current and there will be when starting to drive described eyeglass by a relatively large margin, thus reduce the stability of focusing.
Summary of the invention
In view of this, be necessary to provide a kind of eyeglass drive system and the method that can improve focusing stability.
A kind of eyeglass drive system, it is for being urged to a focusing position by an eyeglass, and described eyeglass drive system comprises a control module and a driver element be connected with described control module.Described driver element and described eyeglass are coupled.Described control module is for obtaining described focusing position and determining that described eyeglass to be driven into the principal current value needed for described focusing position by described driver element.It is that staged rises to the secondary current value of described principal current value gradually and exports the multiple secondary current value increased gradually to described driver element that described control module is used for calculating multiple according to described principal current value.Described driver element is used for described eyeglass to be driven into focusing position.
A kind of eyeglass driving method, it is for being urged to a focusing position by an eyeglass, and described eyeglass driving method comprises the following steps:
Obtain described focusing position;
Described eyeglass is driven into the principal current value needed for described focusing position by acquisition;
Multiple secondary current value rising to described principal current value in staged is gradually calculated according to described principal current value;
Continuously export to the driver element be coupled with described eyeglass the multiple secondary current value increased gradually;
Described eyeglass is driven to move to described focusing position.
Eyeglass drive system provided by the invention calculates multiple secondary current value rising to described principal current value in staged gradually with method according to the principal current value corresponding with described focusing position, and export the multiple secondary current value increased gradually to described driver element, thus reduce the current value of initial input to described driver element, effectively preventing the vibration occurred when starting to drive described eyeglass by a relatively large margin, improve the stability of focusing.
Accompanying drawing explanation
Fig. 1 is the high-level schematic functional block diagram of the eyeglass drive system that embodiment of the present invention provides.
Fig. 2 is the process flow diagram of the eyeglass driving method that embodiment of the present invention provides.
Main element symbol description
| Eyeglass drive system | 100 |
| Eyeglass | 200 |
| Input block | 10 |
| Control module | 20 |
| Search unit | 21 |
| Converting unit | 22 |
| Computing unit | 23 |
| Driver element | 30 |
| Eyeglass driving method | S101-S105 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
As shown in Figure 1, a kind of eyeglass drive system 100 that embodiment of the present invention provides, it is for being urged to a focusing position by an eyeglass 200.Described eyeglass drive system 100 comprises input block 10, control module 20 and a driver element 30.
Described input block 10 is for inputting a focusing signal.In present embodiment, described input block 10 can be a touch-screen or button, also can be a speech reception module.
Described control module 20 is connected with described input block 10.Described control module 20 comprises search unit 21, converting unit 22 and a computing unit 23.Described converting unit 22 is connected between described search unit 21 and described computing unit 23.Described search unit 21 for the described focusing signal search that inputs according to described input block 10 to described focusing position.Described converting unit 22 is for obtaining the principal current value corresponding with described focusing position according to described focusing position.Described computing unit 23 is for calculating multiple secondary current value rising to described principal current value in staged gradually according to described principal current value.In present embodiment, described control module 20 is a central processing unit.Described principal current value is I, and described control module 20 obtains N number of secondary current value increased gradually in staged according to described principal current value, and described secondary current value is respectively 0, I/N, 2I/N, 3I/N ... (N-1) I/N, I.Be appreciated that the number of described secondary current value can pre-set.
Described driver element 30 is connected with the computing unit 23 in described control module 20, and is coupled with described eyeglass 200.Described control module 20 exports to described driver element 30 secondary current value increased gradually continuously.Described eyeglass 200 is urged to described focusing position according to the described secondary current value increased gradually by described driver element 30.In present embodiment, described driver element 30 is voice coil motor.The time interval between the secondary current value that described control module 20 exports described driver element 30 to is equal.
In focus process, operator inputs a focusing signal to described control module 20 by described input block 10.Described search unit 21 according to described focusing signal search such as, to described focusing position, 130um.Described converting unit 22 obtains the principal current value corresponding with described focusing position according to described focusing position further, such as 30mA.Described principal current value is decomposed into 3 secondary current value increased gradually, such as 10mA, 20mA, 30mA by described computing unit 23.Described control module 20 exports to described driver element 30 the secondary current value 10mA increased gradually, 20mA, 30mA continuously.Described driver element 30 is according to described secondary current value 10mA, and 20mA, 30mA drive described eyeglass 200 to move to described focusing position.
As shown in Figure 2, a kind of eyeglass driving method that embodiment of the present invention provides, it is for being urged to a focusing position by an eyeglass 200.Described eyeglass driving method comprises the following steps:
S101: obtain and to focus signal with one, focusing position according to described focusing signal search;
S102: obtain the principal current value be driven into by described eyeglass 200 needed for described focusing position;
S103: calculate multiple secondary current value rising to described principal current value in staged gradually according to described principal current value;
S104: continuously export multiple secondary current value increased gradually to the driver element 30 be coupled with described eyeglass 200; In present embodiment, the time interval between the multiple secondary current value increased gradually exporting described driver element 30 to is equal;
S105: drive described eyeglass 200 to move to described focusing position.
Eyeglass drive system provided by the invention calculates multiple secondary current value rising to described principal current value in staged gradually with method according to the principal current value corresponding with described focusing position, and export the multiple secondary current value increased gradually to described driver element, thus reduce the current value of initial input to described driver element, effectively preventing the vibration occurred when starting to drive described eyeglass by a relatively large margin, improve the stability of focusing.
Be understandable that, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (8)
1. an eyeglass drive system, it is for being urged to a focusing position by an eyeglass, and described eyeglass drive system comprises a control module and a driver element be connected with described control module; Described driver element and described eyeglass are coupled; Described control module is for obtaining described focusing position and determining that described eyeglass to be driven into the principal current value needed for described focusing position by described driver element; It is that staged rises to the secondary current value of described principal current value gradually and exports the multiple secondary current value increased gradually to described driver element that described control module is used for calculating multiple according to described principal current value; Described driver element is used for described eyeglass to be driven into focusing position.
2. eyeglass drive system as claimed in claim 1, it is characterized in that: described eyeglass drive system also comprises an input block, described input block is connected with described control module and inputs one to described control module and to focus signal, and described control module is focusing position according to described focusing signal acquisition.
3. eyeglass drive system as claimed in claim 2, it is characterized in that: described control module comprises a search unit, a converting unit and a computing unit, described converting unit is connected between described search unit and described computing unit, the focusing signal search that described search unit inputs according to described input block is to described focusing position, described converting unit obtains the principal current value corresponding with described focusing position according to described focusing position, and described computing unit obtains multiple secondary current value increased gradually according to described principal current value.
4. eyeglass drive system as claimed in claim 1, it is characterized in that: described principal current value is I, it is the secondary current value that staged increases gradually that described principal current value is decomposed into N section, described secondary current value is respectively 0, I/N, 2I/N, 3I/N ... (N-1) I/N, I.
5. eyeglass drive system as claimed in claim 4, is characterized in that: the time interval that described control module exports between described N section secondary current value is equal.
6. an eyeglass driving method, it is for being urged to a focusing position by an eyeglass, and described eyeglass driving method comprises the following steps:
Obtain described focusing position;
Described eyeglass is driven into the principal current value needed for described focusing position by acquisition;
Multiple secondary current value rising to described principal current value in staged is gradually calculated according to described principal current value;
Continuously export multiple secondary current value increased gradually to the driver element be coupled with described eyeglass;
Described eyeglass is driven to move to described focusing position.
7. eyeglass driving method as claimed in claim 6, is characterized in that: before the described principal current value of acquisition, also comprise step: obtain signal of focusing with, focusing position according to described focusing signal search.
8. eyeglass driving method as claimed in claim 6, is characterized in that: the time interval between the multiple secondary current value increased gradually exporting described driver element to is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212284.6A CN104216091A (en) | 2013-05-31 | 2013-05-31 | Lens driving system and lens driving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212284.6A CN104216091A (en) | 2013-05-31 | 2013-05-31 | Lens driving system and lens driving method |
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| CN104216091A true CN104216091A (en) | 2014-12-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1368658A (en) * | 2001-02-09 | 2002-09-11 | 力捷电脑股份有限公司 | Automatic focusing mechanism and method |
| US20040118927A1 (en) * | 2002-12-18 | 2004-06-24 | Alex Breytman | Miniature auto focus voice coil actuator system |
| CN101140350A (en) * | 2006-09-06 | 2008-03-12 | 三洋电机株式会社 | Lens driving control apparatus |
| CN101153951A (en) * | 2006-09-29 | 2008-04-02 | 富士能株式会社 | Imaging apparatus and portable apparatus |
| US20080130134A1 (en) * | 2004-11-01 | 2008-06-05 | Kozo Ishida | Voice Coil Motor Control Device and Method of Driving the Same, Image Pickup Device |
| CN102468803A (en) * | 2010-11-05 | 2012-05-23 | 天钰科技股份有限公司 | Control method of voice coil motor and lens focusing system |
-
2013
- 2013-05-31 CN CN201310212284.6A patent/CN104216091A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1368658A (en) * | 2001-02-09 | 2002-09-11 | 力捷电脑股份有限公司 | Automatic focusing mechanism and method |
| US20040118927A1 (en) * | 2002-12-18 | 2004-06-24 | Alex Breytman | Miniature auto focus voice coil actuator system |
| US20080130134A1 (en) * | 2004-11-01 | 2008-06-05 | Kozo Ishida | Voice Coil Motor Control Device and Method of Driving the Same, Image Pickup Device |
| CN101140350A (en) * | 2006-09-06 | 2008-03-12 | 三洋电机株式会社 | Lens driving control apparatus |
| CN101153951A (en) * | 2006-09-29 | 2008-04-02 | 富士能株式会社 | Imaging apparatus and portable apparatus |
| CN102468803A (en) * | 2010-11-05 | 2012-05-23 | 天钰科技股份有限公司 | Control method of voice coil motor and lens focusing system |
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Application publication date: 20141217 |