CN101105571A - Camera motor - Google Patents
Camera motor Download PDFInfo
- Publication number
- CN101105571A CN101105571A CNA2006100616432A CN200610061643A CN101105571A CN 101105571 A CN101105571 A CN 101105571A CN A2006100616432 A CNA2006100616432 A CN A2006100616432A CN 200610061643 A CN200610061643 A CN 200610061643A CN 101105571 A CN101105571 A CN 101105571A
- Authority
- CN
- China
- Prior art keywords
- coil holder
- coil
- lens group
- permanet magnet
- camera motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Lens Barrels (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
A camera motor comprises a lens group, a permanent magnet which is provided on the lens group and can expand and contract together with the lens group, an upper and a lower loop bases which are respectively provided on two sides of the permanent magnet and an upper and a lower loops which are respectively wound around the upper and the lower loop bases; the lens group and the permanent magnet form as a whole; after the upper and lower loops are electrified and magnetic field is excited out, the upper and the lower loops and the permanent magnet interact with each other and drive the lens group to move between the perifocus and the over focus. The camera motor has the advantages of simple structure, miniaturization and low production cost.
Description
Technical field
The present invention relates to a kind of camera motor, particularly relate to a kind of camera motor with automatic focusing structure.
Background technology
Along with the continuous development of digital technology, electronic technology is widely used in the camera field, and the digitized video technology is developed rapidly, and the intelligent degree of camera is more and more higher.Particularly mobile phone and PDA portable electron devices such as (personal digital assistants) is also developing to high-performance, multifunctional direction rapidly in recent years, also towards miniaturization development day by day, the lens group of digital camera becomes the trend of development towards compact designing requirement in the combination of digital camera and portable electron device.
The focusing structure of camera is to use Autofocus Technology mostly at present, and the structure of focusing automatically is to focus on the target by checking at the image on the image sensor, and such image sensor has charge-coupled image sensor (Charge Coupled Device; CCD) sensor or complementary matal-oxide semiconductor (C-MOS) sensor, and controlled by the central processing unit that is arranged in the camera, originally camera lens begins moving back and forth from its original position, in the process that camera lens moves around, central processing unit is checked the image that is formed on the image sensor constantly by camera lens, makes camera lens finally stop at image focusing position the most clearly.The process of this focusing, camera lens must constantly drive, and promotes rotation by step motor, camera lens is when moving around, central processing unit records image focusing moment the most clearly, sends the signal that stops to move simultaneously to camera lens, so camera lens stops at this focusing position.And camera lens will be turned back to the original position time, need to drive again, the Photo Interrupter of this camera lens is with the original position of shutter detector lens, when detecting correct original position, the light that this shutter blocking penetrates Photo Interrupter sends stop signal to camera lens, simultaneously so camera lens stops at the original position.
The focusing system of above-mentioned camera, its camera lens needs continuous drive constantly, and the detection of image must continue, each catch image after, camera lens must return its original position.The process power consumption consuming time of this camera lens focusing, and lens construction complexity expend cost.
Summary of the invention
In view of this, be necessary to provide a kind of focusing camera motor simple in structure, with low cost in fact.
A kind of camera motor, comprise that a lens group, is located on the lens group and can with this lens group do stretching motion permanet magnet, be divided into the upper and lower coil holder of permanet magnet both sides and be wound in upper and lower coil on the upper and lower coil holder respectively, the excitatory back of this upper and lower coil electricity drives lens group with permanet magnet generation reciprocation and do switching between perifocus and over focus.
A kind of camera motor, comprise first coil holder that is oppositely arranged and second coil holder, be wound in first coil and second coil, the lens group on first coil holder and second coil holder and be fixed on the lens group and the permanet magnet between first coil holder and second coil holder respectively, respectively at producing the opposite magnetic field of direction on first coil holder and second coil holder, and drive this permanet magnet and lens group moves between first coil holder and second coil holder behind this first coil and second coil electricity.
Compared with prior art, this upper and lower coil is divided into the permanet magnet both sides, produces magnetic field by coil electricity, interacts with permanet magnet, and the promotion lens group moves up and down and reaches the purpose of two-part focusing, and this camera motor focusing is simple in structure, with low cost.
Description of drawings
Fig. 1 is the assembly drawing of camera motor preferred embodiment of the present invention.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is the sectional view of camera motor shown in Figure 1 in the over focus position.
Fig. 4 is the sectional view of camera motor shown in Figure 1 in the perifocus position.
Embodiment
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Please refer to Fig. 1 and Fig. 2, camera motor 100 of the present invention is the structure of focusing automatically, is applied to as in the digital camera, can do switching between an over focus B (as shown in Figure 3) and a perifocus A (as shown in Figure 4), it comprises a shell 10, one places lens group 11, in the shell 10 to be sheathed on permanet magnet 12 on the lens group 11, is divided into the upper and lower coil holder 15a of permanet magnet 12 both sides, 15b, and be wound in this coil holder 15a respectively with certain orientation, the upper and lower coil 14a on the 15b, 14b.
This shell 10 is square column type, inner forms columned accommodation space 101, accommodating lens group 11, permanet magnet 12 and to be surrounded with coil 14a, and the upper and lower coil holder 15a of 14b, 15b is in it.Form twice groove 102 respectively on the end face 104a of shell 10 and the bottom surface 104b, this groove 102 extends radially outward to appearance side 105 from the circumference of accommodation space 101, this two groove 102 lays respectively at the adjacent place, two right angles of this square column type shell 10, forms the link slot 103 that connects the groove 102 on this end face 104a and the bottom surface 104b on the appearance side 105.
This lens group 11 comprises an annular lens barrel 110 and is installed in a camera lens 112 in the lens barrel 110 that this permanet magnet 12 is surrounded on lens barrel 110 outside surfaces and places this lens barrel 110 centre position roughly.This lens group 11, permanet magnet 12 form a whole jointly, do the purpose that telescopic moving realizes focusing when camera is worked.The permanet magnet 12 upper and lower surfaces magnetic insulating part 13a that is sticked respectively, 13b, this insulating part 13a, 13b is an annular heat insulating lamella of being close to permanet magnet both sides about in the of 12, its material is a copper, the equal and opposite in direction of the internal diameter of the internal diameter of this heat insulating lamella and permanet magnet 12, and suitable with the external diameter of this lens barrel 110.
This upper and lower coil holder 15a, 15b selects magnetic material for use, makes as iron etc., to strengthen coil 14a, the magnetic field that 14b produced, each coil holder 15a, 15b comprise an annular bottom surface 152a, 152b, from annular bottom surface 152a, 152b is along the annular wall 150a of medial margin projection, 150b and be formed at annular bottom surface 152a, two-terminal 154a on the 152b, 154b.This two- terminal 154a, 154b are respectively along bottom surface 152a, and 152b extends radially outwardly, and two- terminal 154a, 154b are mutual plumbness, and its size and location correspond respectively to the end face 104a of shell 10 and the groove 102 on the 104b of bottom surface.Upper and lower coil 14a, 14b is wound in this annular wall 150a with certain orientation respectively, the outside surface of 150b, coil 14a, the end of 14b is through terminal 154a, 154b draws, can be connected with external power source (figure does not show), by coil 14a, the magnetic field that the 14b energization excitation changes, to change coil holder 15a, the magnetic at 15b two ends.When camera lens is focused, coil holder 15a, the annular wall 150a of 15b, the top of 150b optionally contacts with insulating part 13a or 13b.Among this embodiment, this upper and lower coil 14a in the galvanization, the magnetic field that the 14b polarization is opposite.
During assembling, permanet magnet 12 is placed in the middle part of the outside surface of lens barrel 110, insulating part 13a, 13b place respectively permanet magnet 12 on, following both sides, this lens group 11, permanet magnet 12 reaches, following insulating part 13a, 13b does as a whole, be contained in the receiving space 101 of shell 10, form the accepting groove of an annular between the lens barrel 110 of this lens group 11 and the shell 10, on, ring support 15a rolls off the production line, 15b is oppositely arranged, be contained in this accepting groove and be sheathed on the two ends of lens group 11 respectively, promptly be positioned at permanet magnet 12 on, following both sides, coil holder 15a, the annular bottom surface 152a of 15b, 152b are in the same plane with the end face 104a and the bottom surface 104b of shell 10 respectively, annular bottom surface 152a, terminal 154a on the 152b, 154b are contained in respectively in the end face 104a and the groove 102 on the 104b of bottom surface of shell 10 accordingly, and by being fixedly welded on the shell 10, coil holder 15a, the annular wall 150a of 15b, the inside surface of 150b fits in the outside surface of lens barrel 110, coil 14a, 14b is wound in annular wall 150a with certain orientation, the outside surface of 150b, respectively via terminal 154a, 154b is connected with external power source.This insulating part 13a, 13b lay respectively at permanet magnet 12 and upper and lower coil 14a, between the 14b, coil 14a in the time of can avoiding the focusing location, 14b directly contacts with permanet magnet 12, causes coil 14a, and the action of a magnetic field power between excitatory back of 14b and the permanet magnet 12 is too strong.
As shown in Figure 3 and Figure 4, be respectively the sectional view of camera motor focusing of the present invention in over focus B and perifocus A position, during work, the camera lens 112 of digital camera is done switching between over focus B and perifocus A.Suppose that going up of this permanet magnet 12 is the N utmost point, is the S utmost point down, because coil 14a, the setting of 14b makes two coil 14a, and the magnetic direction that 14b produces is opposite, when the camera lens 112 of digital camera is switched between over focus B by perifocus A, these camera lens 112 initial perifocus A places that are positioned, as shown in Figure 4.As coil 14a, behind the 14b energization excitation, the magnetic direction that makes coil 14a is the last S utmost point that is, it is down the N utmost point, the magnetic direction of lower coil 14b is the last N utmost point that is, it is down the S utmost point, as shown in Figure 3, promptly go up, ring support 15a rolls off the production line, 15b produces opposite magnetic field respectively, magnetic field magnetic in contiguous magnetite 12 1 ends is the N utmost point, and the last coil holder 15a and permanet magnet 12 same sexes are repelled each other, and rolling off the production line, there is a natural attraction between the sexes for ring support 15b and permanet magnet 12, promoting this lens group 11 together moves downward to being positioned over focus B position together with permanet magnet 12, as shown in Figure 3, the top of the annular wall 150b of the ring support 15b that rolls off the production line this moment contacts with following insulating part 13b, and the top of the annular wall 150a of last coil holder 15a and last insulating part 13a are at a distance of certain distance.
Because after lens group 11 is positioned over focus B, coil 14a, the 14b demagnetization of cutting off the power supply, coil holder 15a, magnetic field on the 15b disappears, because the ring support 15b that rolls off the production line is that magnetic material is made, the permanet magnet 12 ring support 15b that rolled off the production line attracts, and makes lens group 11 not need to provide electric power still to be positioned over focus B position again.
Otherwise, when the camera lens 112 of this digital camera is switched between perifocus A by over focus B, these camera lens 112 initial over focus B positions that are positioned, as shown in Figure 3, in the switching, lower coil 14a, the direction of current of 14b makes, lower coil 14a, the magnetic field change of direction that 14b produces, the magnetic direction of then going up coil 15a is the last N utmost point that is, it is down the S utmost point, the magnetic direction of lower coil 15b is the last S utmost point that is, is the N utmost point down, as shown in Figure 4, promptly go up, ring support 15a rolls off the production line, 15b is the S utmost point in the magnetic field magnetic of contiguous magnetite 12 1 ends, and there is a natural attraction between the sexes for last coil holder 15a and permanet magnet 12, and roll off the production line the ring support 15b and permanet magnet 12 same sexes are repelled each other, promoting this lens group 11 together moves up to together with permanet magnet 12 and is positioned perifocus A position, as shown in Figure 4, the top of the annular wall 150a of coil holder 15a contacts with last insulating part 13a on this moment, and the top of the annular wall 150b of the ring support 15b that rolls off the production line and following insulating part 13b are at a distance of certain distance.
In like manner, because after lens group 11 is positioned perifocus A, coil 14a, the 14b demagnetization of cutting off the power supply, coil holder 15a, the magnetic field of 15b disappears, because last coil holder 15a is that magnetic material is made, permanet magnet 12 is attracted by last coil holder 15a, makes lens group 11 not need to provide electric power still to be positioned perifocus A position again.
Understandable, if going up of permanet magnet 12 is down for the N utmost point, then to change coil 14a by the S utmost point, the direction of 14b coiling can reach same switching effect.When the camera lens 112 of digital camera is switched between over focus B by perifocus A, these camera lens 112 initial perifocus A places that are positioned, as coil 14a, behind the 14b energization excitation, the magnetic direction that makes coil 15a is the last N utmost point that is, it is down the S utmost point, the magnetic direction of lower coil 15b is the last S utmost point that is, it is down the N utmost point, promptly go up, the ring support 15a that rolls off the production line, 15b is the S utmost point in the magnetic field magnetic of contiguous permanet magnet 12 1 ends, and the last coil holder 15a and permanet magnet 12 same sexes are repelled each other, rolling off the production line, there is a natural attraction between the sexes for ring support 15b and permanet magnet 12, promotes this lens group 11 together and move downward to being positioned over focus B position together with permanet magnet 12.Otherwise, when the camera lens 112 of digital camera is switched between perifocus A by over focus B, these camera lens 112 initial over focus B places that are positioned, coil 14a, the reverse energization excitation of 14b, the magnetic direction that makes coil 15a is the last S utmost point that is, it is down the N utmost point, the magnetic direction of lower coil 15b is the last N utmost point that is, down for the S utmost point, promptly goes up, ring support 15a rolls off the production line, 15b is the N utmost point in the magnetic field magnetic of contiguous permanet magnet 12 1 ends, the ring support 15b and permanet magnet 12 same sexes of rolling off the production line are repelled each other, and there is a natural attraction between the sexes for last coil holder 15a and permanet magnet 12, promote this lens group 11 together and move up to together with permanet magnet 12 and be positioned perifocus A position.
Claims (13)
1. camera motor, it is characterized in that: comprise that a lens group, is located on the lens group and can with this lens group do stretching motion permanet magnet, be divided into the upper and lower coil holder of permanet magnet both sides and be wound in upper and lower coil on the upper and lower coil holder respectively, the excitatory back of this upper and lower coil electricity drives lens group with permanet magnet generation reciprocation and do switching between perifocus and over focus.
2. camera motor as claimed in claim 1 is characterized in that: establish a magnetic insulating part between this permanet magnet and the upper and lower coil holder respectively, to isolate upper and lower coil holder and permanet magnet.
3. camera motor as claimed in claim 2 is characterized in that: the material of this magnetic insulating part is a copper.
4. camera motor as claimed in claim 2, it is characterized in that: this insulating part is fixed in the both sides of permanet magnet respectively, this lens group is when perifocus or over focus position, one of them leans upper and lower coil holder with corresponding insulating part, and another coil holder keeps at a certain distance away with corresponding insulating part.
5. camera motor as claimed in claim 1 is characterized in that: the material of this coil holder is an iron.
6. camera motor as claimed in claim 1, it is characterized in that: the annular wall that each coil holder includes an annular bottom surface and extends from annular bottom surface, this coil is wound on this annular wall, forms the two-terminal that coil is electrically connected to power supply on this annular bottom surface respectively.
7. camera motor as claimed in claim 6 is characterized in that: this two-terminal is perpendicular state, respectively extending radially outwardly along annular bottom surface.
8. camera motor as claimed in claim 7 is characterized in that: this camera motor also comprises a shell, is respectively equipped with the groove of accommodating terminal on the end face of shell and the bottom surface.
9. camera motor as claimed in claim 8 is characterized in that: this shell is square column type, and channel shaped is formed on its end face and the bottom surface two adjacent places, right angle.
10. camera motor as claimed in claim 1 is characterized in that: this lens group comprises an annular lens barrel and is installed in the interior camera lens of lens barrel that this permanet magnet is looped around on the centre position of this lens barrel outside surface.
11. camera motor, it is characterized in that: comprise first coil holder that is oppositely arranged and second coil holder, be wound in first coil and second coil, the lens group on first coil holder and second coil holder and be fixed on the lens group and the permanet magnet between first coil holder and second coil holder respectively, respectively at producing the opposite magnetic field of direction on first coil holder and second coil holder, and drive this permanet magnet and lens group moves between first coil holder and second coil holder behind this first coil and second coil electricity.
12. camera motor as claimed in claim 11, it is characterized in that: this lens group comprises an annular lens barrel, this lens barrel be housed in the shell and and this shell between form an annular accepting groove, this first coil holder, second coil holder and permanet magnet are contained in this accepting groove.
13. camera motor as claimed in claim 12 is characterized in that: this permanet magnet is respectively equipped with a magnetic insulating part on the side up and down.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100616432A CN101105571B (en) | 2006-07-14 | 2006-07-14 | Camera motor |
| JP2007184813A JP2008026898A (en) | 2006-07-14 | 2007-07-13 | Camera motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100616432A CN101105571B (en) | 2006-07-14 | 2006-07-14 | Camera motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105571A true CN101105571A (en) | 2008-01-16 |
| CN101105571B CN101105571B (en) | 2011-06-08 |
Family
ID=38999542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100616432A Expired - Fee Related CN101105571B (en) | 2006-07-14 | 2006-07-14 | Camera motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008026898A (en) |
| CN (1) | CN101105571B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109729254A (en) * | 2019-02-28 | 2019-05-07 | 青岛海信移动通信技术股份有限公司 | A kind of cam device, mobile terminal and control method |
| CN111884466A (en) * | 2020-08-03 | 2020-11-03 | 苏州市优尔特精密机械科技有限公司 | Elastic voice coil motor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009142371A1 (en) * | 2008-05-22 | 2009-11-26 | Tae Geuk Electric Generation Co., Ltd. | Lens structure for optical device using linear motor and optical device mounting the same |
| KR101173110B1 (en) | 2010-03-04 | 2012-08-16 | (주)태극기전 | Actuator for adjusting focal length of lens |
| WO2011108775A1 (en) * | 2010-03-04 | 2011-09-09 | (주)태극기전 | Actuator for controlling lens focal length |
| KR101192364B1 (en) | 2011-05-02 | 2012-10-17 | (주)태극기전 | Lens structure having focuse control functional |
| KR101255505B1 (en) | 2012-02-24 | 2013-04-16 | 호서대학교 산학협력단 | Camera module |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145745Y2 (en) * | 1981-04-17 | 1986-12-23 | ||
| JPH0450907A (en) * | 1990-06-15 | 1992-02-19 | Nippon Mini Motor Kk | Adjusting mechanism for camera lens |
| JP2005148586A (en) * | 2003-11-19 | 2005-06-09 | Sankyo Seiki Mfg Co Ltd | Lens driver, its manufacturing method and portable equipment with camera |
| JP2006187104A (en) * | 2004-12-27 | 2006-07-13 | Nidec Sankyo Corp | Magnetic driving device and lens driving device |
-
2006
- 2006-07-14 CN CN2006100616432A patent/CN101105571B/en not_active Expired - Fee Related
-
2007
- 2007-07-13 JP JP2007184813A patent/JP2008026898A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109729254A (en) * | 2019-02-28 | 2019-05-07 | 青岛海信移动通信技术股份有限公司 | A kind of cam device, mobile terminal and control method |
| CN111884466A (en) * | 2020-08-03 | 2020-11-03 | 苏州市优尔特精密机械科技有限公司 | Elastic voice coil motor |
| CN111884466B (en) * | 2020-08-03 | 2023-02-10 | 苏州市优尔特精密机械科技有限公司 | Elastic voice coil motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101105571B (en) | 2011-06-08 |
| JP2008026898A (en) | 2008-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101105571B (en) | Camera motor | |
| CN101324741B (en) | Camera motor | |
| US7990625B2 (en) | Camera module | |
| JP4495705B2 (en) | Lens drive device | |
| US7573660B2 (en) | Lens module and camera module having same | |
| JP2008096705A (en) | Lens drive device, imaging apparatus and personal digital assistant | |
| CN103995339A (en) | Motor structure with voice rings arranged in middle | |
| JP2007108539A (en) | Imaging apparatus | |
| KR20100104556A (en) | Driving assembly for switching filter for camera module and filter switching apparatus having thereof | |
| US7596309B2 (en) | Auto-focusing camera | |
| JP2009036825A (en) | Lens drive device | |
| JP2007226011A (en) | Lens drive unit | |
| US7639938B2 (en) | Two-step focus lens of auto-focusing camera | |
| CN100543505C (en) | Two-part focus lens structure | |
| KR100711507B1 (en) | Device for driving the camera renz for communicator | |
| TWI303512B (en) | Auto focusing and zooming device, actuator and voice coil motor thereof | |
| JP2005070609A (en) | Method for driving lens driving device and lens driving device and camera | |
| US7680407B2 (en) | Auto-focusing camera | |
| JP2010169900A (en) | Lens driving device | |
| US7446964B2 (en) | Lens module and camera module having same | |
| CN101009773B (en) | Digital camera module | |
| CN210428039U (en) | Focal length adjusting device and mobile terminal | |
| TWI376560B (en) | Lens module | |
| JP2009053573A (en) | Lens driving device | |
| WO2005071459A1 (en) | Solid-state imaging device and portable electronic apparatus with the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20150714 |
|
| EXPY | Termination of patent right or utility model |