CN100432824C - Focusing structure - Google Patents
Focusing structure Download PDFInfo
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- CN100432824C CN100432824C CNB2004100688183A CN200410068818A CN100432824C CN 100432824 C CN100432824 C CN 100432824C CN B2004100688183 A CNB2004100688183 A CN B2004100688183A CN 200410068818 A CN200410068818 A CN 200410068818A CN 100432824 C CN100432824 C CN 100432824C
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- yoke
- coil
- loop
- focusing
- magnet
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Abstract
The present invention relates to a focusing structure which can be used in an image device. The focusing structure comprises a base, a lens seat and an electromagnetic dynamic force turning circle, wherein the electromagnetic dynamic force turning circle is a hollow closed turning circle composed of a magnet and at least one piece of yoke iron; one part of the yoke iron is coiled with a coil. When the coil has circulating current flows, because the direction of the current flows is perpendicular to the direction of a magnetic force line, the coil generates dynamic force so as to drive the lens seat to slide along a guide rod of the base, and thus, the image device has a focusing function. Therefore, when a user uses the image device which is matched with the electromagnetic dynamic force turning circle, an uncomfortable feeling caused by noise generated by focusing operation no longer exists, and the quality of the image device is enhanced. Of course, the current flow of the coil is directly controlled for drive the electromagnetic power turning circle to generate the dynamic force, and other drive gears are not needed for converting the direction of the dynamic force output and adjusting the level and the rotation speed of the dynamic force, which also saves the cost of the image device.
Description
Technical field
The present invention is relevant for a kind of focusing structure of device for image, is meant especially a kind ofly to utilize galvanomagnetic effect to produce to focus on power and with so that device for image has the focusing structure of the device for image of focusing function.
Background technology
Device for image now is digital camera or scanner etc. for example, mostly possesses the function that focusing is arranged, and just can make device for image capture image clearly, satisfies user's demand.
With the digital camera is example, a kind of focusing structure of known digital camera as shown in Figure 1, its focusing structure 1 includes a pedestal 10, one lens mount 12, one motor 14 and a transmission gear module 15 etc., wherein lens mount 12 comprises a camera lens 120, in order to allow image by making its imaging, whole lens mount 12 slides along the guide rod 100 of pedestal 10, the power of its slip is then from motor 14, the power that motor 14 is provided is earlier by transmission gear module 15, after changing the direction of its power lens mount 12 is slided along the guide rod 100 of pedestal 10, reach the purpose that digital camera focuses on.
From the above, known focusing structure must have a motor that power is provided, but generally speaking, motor all can produce unavoidable noise when running, this can make device for image when focusing on action, can't noise be arranged with avoiding, makes the user produce uncomfortable feeling; What is more, and motor also can produce vibrations in the process of running, if its vibration amplitude is too big, even the action of focusing can't accurately be grasped, and this shortcoming has influenced device for image institute picked image quality widely; In addition, when using motor as the power source of the focusing structure of device for image, since device for image that the space is set is limited, so tending to needs a transmission gear module, and the power that motor produced can successfully be led on the lens mount, lens mount can be slided along the guide rod of pedestal, reach the purpose of focusing, but the setting of transmission gear module has increased the cost of device for image far and away, and this all is the problem that known device for image institute desire solves.
Summary of the invention
Purpose of the present invention mainly provides a kind of focusing structure, can be applied to as on the digital camera or the device for image of scanner, not only obviously reduces the noise when focusing on, vibrations in the time of more can avoiding focusing on and influence the quality of image.
For reaching above-mentioned purpose, a kind of focusing structure provided by the invention can be applied among the device for image, makes device for image possess the function of focusing, and wherein focusing structure comprises: a pedestal; One lens mount, at least one guide rod slip along pedestal comprises a camera lens on it; And an electromagnetic power loop, in order to lens mount power to be provided, it can be slided along the guide rod of pedestal, wherein, the electromagnetic power loop comprises a magnet; One yoke, yoke and magnet form the loop of hollow sealing, and the magnetic line of force that magnet produced extends along yoke; An and coil, coil is formed by the place of a staple for electric wire around yoke, and is connected in lens mount, when having electric current to flow through in the coil, by the magnetic line of force in the yoke and the current vertical of passing through this coil, can make this coil drive at least one guide rod slip of lens mount along pedestal.
A kind of focusing structure provided by the invention, its yoke are a ㄇ shape yoke, and its openend connects the two poles of the earth of magnet respectively, can form the rectangle loop of hollow sealing with magnet, the preferably, the rectangle loop is a long rectangle loop, and coil loop around yoke than the long side place.
A kind of focusing structure provided by the invention, yoke also can be made up of three long cuboid yokes, can be combined to form a ㄇ shape yoke, its openend connects the two poles of the earth of magnet respectively, can form the rectangle loop of hollow sealing with magnet, the preferably, the rectangle loop is a long rectangle loop, and coil loop around yoke than the long side place.
A kind of focusing structure provided by the invention, yoke are the loop of hollow sealing, and magnet then is positioned at a place of yoke, the preferably, the rectangle loop is a long rectangle loop, and coil loop around yoke than the long side place.
A kind of focusing structure provided by the invention, device for image are a digital camera or one scan device.
According to such scheme, the present invention provides power with the electromagnetic power loop, drive the lens mount slip and make device for image have the function of focusing, owing to being that electromagnetic action with the electromagnetic power loop produces power, so can not produce any noise, the user uses the device for image of being furnished with such electromagnetic power loop, can uncomfortable impression not arranged because focusing on the noise that action produced again, improved the quality of device for image, certainly, directly the magnitude of current of control coil makes the electromagnetic power loop produce power, the size and the rotating speed that also no longer need other transmission gear module to come conversion power outbound course and adjust power, this has also saved the cost of device for image.
Description of drawings
Fig. 1 is the schematic perspective view of known focusing structure.
Fig. 2 is the schematic perspective view of the focusing structure of first embodiment of the invention.
Fig. 3 A is the schematic perspective view of the electromagnetic power loop among Fig. 2.
Fig. 3 B is the last view plane synoptic diagram of the power loop among Fig. 2.
Fig. 3 C is the forward sight floor map of the electromagnetic power loop among Fig. 2.
Fig. 4 is the schematic perspective view of electromagnetic power loop of the focusing structure of second embodiment of the invention.
Fig. 5 is the schematic perspective view of electromagnetic power loop of the focusing structure of third embodiment of the invention.
The component symbol explanation
1 ... known focusing structure 10 ... pedestal
100 ... guide rod 12 ... lens mount
120 ... camera lens 14 ... motor
15 ... transmission gear module 2 ... focusing structure of the present invention
20 ... pedestal 200 ... guide rod
22 ... lens mount 220 ... camera lens
26 ... electromagnetic power loop 260 ... magnet
261～264 ... cuboid yoke 265 ... ㄇ shape yoke
266 ... coil 30 ... magnetic line of force direction
40 ... direction of current
Embodiment
See also shown in Figure 2ly, be the first embodiment of the present invention, the focusing structure of the present invention 2 shown in the figure comprises a pedestal 20, a lens mount 22 and an electromagnetic power loop 26 etc., and wherein, lens mount 22 comprises a camera lens 220; Wherein, the structure of pedestal 20 and lens mount 22 is roughly identical with described conventional construction with its function mode, but the difference of the present invention and conventional construction maximum is to have given up with the power source of motor as focusing structure 2, and use instead with the power source of electromagnetic power loop 26 as focusing structure 2, the power that is produced with electromagnetic power loop 26, and then drive guide rod 200 slips of lens mount 22 along pedestal 20, and reach the purpose that device for image can focus on.
Illustrate further, the described electromagnetic power loop 26 of present embodiment comprises a magnet 260, a ㄇ shape yoke 265 and a coil 266; Wherein, magnet 260 is a permanent magnet; And the openend of ㄇ shape yoke 265 is connected to the two poles of the earth of magnet 260, just can form the rectangle loop of hollow sealing with magnet 260, the preferably, and the rectangle loop can be a long rectangle loop, but not as limit; Coil 266 then is to be formed by the place of a staple for electric wire around ㄇ shape yoke 265, the preferably, if the rectangle loop is a long rectangle loop, 266 of coils around ㄇ shape yoke 265 than the long side place, but not as limit, simultaneously, coil 266 connects and is fixed in lens mount 22, so, the magnetic line of force that the N utmost point of magnet 260 is produced can extend along the direction of ㄇ shape yoke 265, returns the S utmost point place of magnet 260; The detailed manner of execution of its electromagnetic power loop 26 is then as described below: please refer to shown in Fig. 3 A, for example, when having electric current to flow through in the coil 266, its direction of current flow is shown in the direction of current among Fig. 3 A 40, if by can know shown in Fig. 3 C find out direction of current 40 be round ㄇ shape yoke 265 than the long side place, direction by the magnetic line of force in the ㄇ shape yoke 265 then shown in the magnetic line of force direction 30 among Fig. 3 A, if by then can know shown in Fig. 3 B find out magnetic line of force direction 30 along and extend around ㄇ shape yoke 265; By above-mentioned graphic can know learn, because the direction of current 40 by coil 266 is vertical with magnetic line of force direction 30, direction of current 40 perpendicular cuts magnetic line of force direction 30 formed magnetic fields, make coil 266 produce the power that moves along ㄇ shape yoke 265, and coil 266 is slided towards positive directions X, because coil 266 is connecting lens mount 22, and then make coil 266 can drive guide rod 200 slips of lens mount 22 along pedestal 20, in view of the above, the slip of lens mount 22 makes device for image have the function of focusing; Certainly, if one of above-mentioned magnetic field and sense of current just are oppositely, just then coil 266 slides towards negative directions X.
In the foregoing description, if the rectangle loop of electromagnetic power loop 26 a long rectangle loop, then coil 266 can around ㄇ shape yoke 265 than the long side place, can make the sliding distance of coil 266 longer like this, and then make camera lens 220 have long focusing distance; Certainly, the shape of electromagnetic power loop 26 of the present invention as long as add a magnet with a yoke, forms the loop of a sealing not as limit, all can implement according to this.
The foregoing description provides power with electromagnetic power loop 26, drive the slip of lens mount 22 and make device for image have the function of focusing, owing to being that electromagnetic action with electromagnetic power loop 26 produces power, so can not produce any noise, the user uses the device for image of being furnished with such electromagnetic power loop, can uncomfortable impression not arranged because focusing on the noise that action produced again, improved the quality of device for image, certainly, directly the magnitude of current of control coil makes the electromagnetic power loop produce power, the size and the rotating speed that also no longer need other transmission gear module to come conversion power outbound course and adjust power, this has also saved the cost of device for image.
The second embodiment of the present invention sees also shown in Figure 4, it shown in the figure the another kind of embodiment of the electromagnetic power loop 26 of focusing structure of the present invention, the electromagnetic power loop 26 of present embodiment also can be made up of 261,262,263 of three cuboid yokes, add after the magnet 260, form the rectangle loop of hollow sealing, as shown in Figure 4, the preferably, the rectangle loop can be a long rectangle loop; So, the magnetic line of force that the N utmost point of magnet 260 is produced still can extend along three cuboid yokes, 261,262,263 orders, return the S utmost point place of magnet 260, wherein when the magnetic line of force passes through coil 266, when if coil 266 has current flowing, also can make coil 266 produce the power that moves along cuboid yoke 262, make it drive guide rod 200 slips of lens mount 22, make device for image have the function of focusing along pedestal 20.
The third embodiment of the present invention sees also shown in Figure 5, it shown in the figure another embodiment of the electromagnetic power loop 26 of focusing structure of the present invention, the electromagnetic power loop 26 of present embodiment also can be formed a rectangle loop by the cuboid yoke of hollow sealing and add a magnet and constitute, the rectangle yoke of this hollow sealing can be by four cuboid yokes 261,262,263,264 form, also can directly constitute by the rectangle yoke of integrated hollow sealing, production method can adopt the metal stamping or the mode of extruding once to finish, again a magnet 260 is connected in a side of the rectangle yoke of hollow sealing, the preferably, if rectangle loop one long rectangle loop, 260 of magnet are connected in the inboard than long side of long rectangle loop, do not need certainly as limit; So, the magnetic line of force that the N utmost point of magnet 260 is produced still can extend along cuboid yoke 261,262,263 orders, return the S utmost point place of magnet 260, wherein when the magnetic line of force passes through coil 266, when if coil 266 has current flowing, also can make coil 266 produce the power that moves along cuboid yoke 262, make to drive guide rod 200 slips of lens mount 22, make device for image have the function of focusing along pedestal 20; Present embodiment is owing to be the main structure that constitutes electromagnetic power loop 26 with the rectangle yoke of hollow sealing, and its structure rigidity is preferable, and more or less freely manufacturing, simultaneously, has the described advantage as first embodiment.
The above only is preferred embodiment of the present invention, and the foregoing description only is used for illustrating but not in order to limit scope of the present invention, category of the present invention is defined by claims.All equalizations of doing according to claims of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (12)
1. a focusing structure is applied among the device for image, makes this device for image possess the function of focusing, it is characterized in that this focusing structure comprises:
One pedestal;
One lens mount, this lens mount slides along at least one guide rod of this pedestal, comprises a camera lens on it;
One magnet;
One yoke, this yoke and this magnet form the loop of hollow sealing, and the magnetic line of force that this magnet produced extends along this yoke;
One coil is formed by the place of a staple for electric wire around this yoke, and is connected in this lens mount, when having electric current to flow through in this coil, makes this coil can drive at least one guide rod slip of this lens mount along this pedestal.
2. focusing structure according to claim 1 is characterized in that, described this yoke is a ㄇ shape yoke, and its openend connects the two poles of the earth of this magnet respectively, can form the rectangle loop of hollow sealing with this magnet.
3. focusing structure according to claim 1, it is characterized in that described this yoke is made up of three long cuboid yokes, can be combined to form a ㄇ shape yoke, its openend connects the two poles of the earth of this magnet respectively, can form the rectangle loop of hollow sealing with this magnet.
4. according to claim 2 or 3 described focusing structures, it is characterized in that described rectangle loop is a long rectangle loop, this coil loop around this yoke than the long side place.
5. focusing structure according to claim 1 is characterized in that, by the magnetic line of force in this yoke and the current vertical of passing through this coil.
6. a focusing structure is applied among the device for image, makes this device for image possess the function of focusing, it is characterized in that this focusing structure comprises:
One pedestal;
One lens mount, this lens mount slides along at least one guide rod of this pedestal, comprises a camera lens on it;
One yoke is the loop of hollow sealing;
One magnet is positioned at a place of this yoke, and the magnetic line of force that this magnet produced extends along this yoke;
One coil is formed by a staple for electric wire another place around this yoke, and is connected in this lens mount, when having electric current to flow through in this coil, makes this coil can drive at least one guide rod slip of this lens mount along this pedestal.
7. focusing structure according to claim 6 is characterized in that, described this yoke is the rectangle loop of hollow sealing.
8. focusing structure according to claim 7 is characterized in that, described rectangle loop is a long rectangle loop, this coil loop around this yoke than the long side place.
9. focusing structure according to claim 6 is characterized in that, the magnetic line of force that described magnet produces extends along the loop direction of yoke.
10. focusing structure according to claim 6 is characterized in that, by the magnetic line of force in this yoke and the current vertical of passing through this coil.
11., it is characterized in that described this device for image is a digital camera according to claim 1 or 6 described focusing structures.
12., it is characterized in that described this device for image is the one scan device according to claim 1 or 6 described focusing structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100688183A CN100432824C (en) | 2004-07-05 | 2004-07-05 | Focusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100688183A CN100432824C (en) | 2004-07-05 | 2004-07-05 | Focusing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1719330A CN1719330A (en) | 2006-01-11 |
| CN100432824C true CN100432824C (en) | 2008-11-12 |
Family
ID=35931196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100688183A Expired - Fee Related CN100432824C (en) | 2004-07-05 | 2004-07-05 | Focusing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432824C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078804B (en) * | 2006-05-24 | 2010-07-28 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN102118552B (en) * | 2009-12-30 | 2013-11-06 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237530A (en) * | 1995-02-28 | 1996-09-13 | Canon Inc | Optical device |
| CN1402036A (en) * | 2001-08-29 | 2003-03-12 | 三星电机株式会社 | Picture module |
| CN1435826A (en) * | 2002-02-01 | 2003-08-13 | 三洋电机株式会社 | Object lens driving device |
-
2004
- 2004-07-05 CN CNB2004100688183A patent/CN100432824C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237530A (en) * | 1995-02-28 | 1996-09-13 | Canon Inc | Optical device |
| CN1402036A (en) * | 2001-08-29 | 2003-03-12 | 三星电机株式会社 | Picture module |
| CN1435826A (en) * | 2002-02-01 | 2003-08-13 | 三洋电机株式会社 | Object lens driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1719330A (en) | 2006-01-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YUDONG OPTICAL CO., LTD. Free format text: FORMER OWNER: HONGYOU SCIENCE AND TECHNOLOGY CO LTD Effective date: 20070126 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070126 Address after: Delaware Applicant after: Hongyou Science & Technology Co., Ltd. Address before: Hsinchu city of Taiwan Province Applicant before: Hongyou Science and Technology Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20120705 |