CN102331614B - Lens drive device, automatic focus camera and mobile terminal device - Google Patents
Lens drive device, automatic focus camera and mobile terminal device Download PDFInfo
- Publication number
- CN102331614B CN102331614B CN 201110188153 CN201110188153A CN102331614B CN 102331614 B CN102331614 B CN 102331614B CN 201110188153 CN201110188153 CN 201110188153 CN 201110188153 A CN201110188153 A CN 201110188153A CN 102331614 B CN102331614 B CN 102331614B
- Authority
- CN
- China
- Prior art keywords
- lens
- supports body
- lens supports
- guide
- collar extension
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Landscapes
- Lens Barrels (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Studio Devices (AREA)
Abstract
The present invention provides a lens drive device capable of maintaining a moved position of a lens support body and preventing the lens support body from inclining, and an automatic focus camera and a mobile terminal device thereof. In the lens drive device 1, the lens support body is supported by freely movable springs 9, 11; the lens is provided with a guiding shaft 41 in the direction of an optical axis; a coil body 15 is powered on, when a balance is achieved with elastic forces of the springs 9, 11, the lens support body is moved to a predetermined position; and the lens support body 7 is provided with a fastening part 43 for fastening the guiding shaft 41, wherein in a moving position and a stop position of the lens support body 7, the fastening part 43 of the lens support body 7 is fastened on the guiding shaft 41.
Description
Technical field
The invention relates to a kind of can the mobile lens supporter after the coil electricity lens driver, carried the auto-focus camera of its lens driver and be accompanied with the mobile auspicious device eventually of camera function.
Background technology
The open JP2009-271204 communique of patent documentation 1(patent) disclosing in has, and the periphery of lens supports body arranges coil case, the magnetite that configures on lens supports body outer circumferential side and the setting of coil case subtend.The lens supports body supports by spring, and according to switching on to coil case, magnetite magnetic field generation electromagnetic force is mutually balanced with spring power, and the lens supports body moves to institute's allocation.
At the open JP2005-352102 communique of patent documentation 2(patent) in disclose and have, coil case is arranged at the periphery of lens supports body, in the outer circumferential side arrangement brake while of lens supports body, the movement of lens supports body is led.
But in patent documentation 1, when the lens supports body moves and after mobile, according to the deflection of spring power, act on the deflection of magnetic field intensity of the magnetite of coil case, as shown in Figure 6, lens supports body 101 produces inclination (optical axis) θ sometimes.In addition, in Fig. 6, symbol 103 is that coil case, 105 is magnetite.
Like this, in case the lens supports body produces, just can not obtain distinct portrait.Particularly very high to the plain shaft precision requirement of lens supports body in recent years.
In addition, in patent documentation 2, can prevent that according to the axis of guide lens supports body from producing, but because be not provided with spring, so the position after the lens supports body moves is difficult to keep.
Summary of the invention
For this reason, the invention provides a kind of position that can keep after the lens supports body moves, can prevent simultaneously lens driver that the lens supports body tilts, auto-focus camera and and the mobile auspicious device eventually that is accompanied with camera function be purpose.
For the lens driver of realizing described purpose is, has the lens supports body of support of lens; Be fixed in the coil case of lens supports on external week; The support of lens supporter carries out comfortable mobile spring; Be arranged on lens supports body outer circumferential side, with the magnetite of coil case subtend configuration; Be arranged on the axis of guide of the optical axis direction of lens.To the coil case energising, when reaching equilibrium between the electromagnetic force that the magnetic field of magnetite produces and the elastic force of spring, the lens supports body is moved to institute's allocation.Being characterized as of lens driver: the lens supports body has the section that is associated that is associated the axis of guide, the lens supports body move and stop position on, the section of being associated of lens supports body is associated on the axis of guide.
Described lens driver has the ring-type collar extension that the lens supports body is disposed at interior week further, and spring is disposed at the place ahead of collar extension optical axis direction and a place at rear at least.Collar extension sees that from the plane of optical axis direction its profile is polygon, and magnetite is disposed at each bight of collar extension, and the axis of guide is disposed between the bight of collar extension.
Described lens driver, collar extension has to prolong to prolong to the inboard of interior all sides from periphery wall with from an end of the optical axis direction of periphery wall and section further.One end of the axis of guide is held in the inboard and prolongs on the fitting portion hole that section.
For the auto-focus camera of realizing described purpose has aforesaid lens driver, is arranged at imageing sensor, the control part of the lens imaging side of lens supports body.Control part, the peak value in the high frequency field of the comparison of imageing sensor compares one by one, passes to electric current the lens supports body is moved to the highest synthetic focal position of comparison.
For the mobile terminal apparatus feature that is accompanied with camera function that realizes described purpose is to be equipped with described auto-focus camera.
According to described lens driver, to coil case energising, for the electromagnetic force that the magnetic field of magnetite produces, the lens supports body moves to the optical axis direction of lens, and the elastic force that acts on electromagnetic force on coil case and spring stops when reaching mutually equilibrium locations.Be set in the section that is associated on the lens supports body, even if when the lens supports body moves and after stopping, also be associated on the axis of guide, so when mobile and after stopping, the posture of lens supports body is held, can prevent that the inclination of lens supports body from occuring.
Magnetite is disposed at the bight of collar extension, and the axis of guide is disposed between the bight of collar extension, and the occasion of the axis of guide is being set, magnetite can obstacle to and can be configured.Simultaneously, can not will the profile of collar extension Plane Angle do large and the axis of guide can be set.
Advance in the embedded hole of collar extension because the axis of guide is chimeric, can easily realize the fixing and assembling of the axis of guide.
Description of drawings
[Fig. 1] is the viewgraph of cross-section of the lens driver of relevant the 1st example.
[Fig. 2] is the exploded perspective view of the lens driver of relevant the 1st example.
[Fig. 3] is that the lens driver of relevant the 1st example carries out the shear sectional plane schematic diagram of A-A position as shown in Figure 4.
[Fig. 4] is the outward appearance oblique view of the lens driver of relevant the 1st example.
[Fig. 5] is the Action Specification figure of the lens driver of relevant the 1st example, i.e. the summary pie graph of lens driver.
The Action Specification figure of [Fig. 6] past lens driver namely passes by the summary pie graph of lens driver.
Embodiment
Below with reference to Fig. 1～Fig. 5 of accompanying drawing, describe the 1st example of the present invention in detail.Lens driver 1 about the 1st example is to be assembled into the lens driver that the automatic focusing in mobile phone is taken a picture.
The configuration of this lens driver 1 is, as shown in Figure 2, has the base 5 and the rear side spring 11 that arrange on the framework 8 that arranges on collar extension 3, lens supports body 7, the collar extension 3 optical axis direction front sides of ring-type and front side spring 9, collar extension 3 rear sides.Be configured in the pad 17 of the insulating material between rear side spring 11 and collar extension 3.The axis of guide 41 is arranged on collar extension 3.
The front side end of periphery wall 3a is prolonged to prolong to the inboard of interior all sides and wall 3c.The inboard prolongs wall 3c and connect internal perisporium 3b and periphery wall 3a.Periphery wall 3a, internal perisporium 3b, inboard are prolonged and its section constitution of wall 3c for slightly being the コ word shape.
The internal perisporium 3b of collar extension 3 be arranged on the position in corresponding 4 bights 14, be formed with space 12 between adjacent internal perisporium 3b, 3b.
In addition, as shown in Figure 1, in 4 bights 14 of collar extension 3, magnetite 13 is arranged on interior all sides of periphery wall 3a.
And, prolonging in the inboard of collar extension 3 on wall 3c, the fitting portion 42 of the axis of guide 41 is formed between bight 14,14.Fitting portion 42 relatively to the position on be provided with 2 places.
The slightly cylindrical shape of lens supports body 7 as shown in Figure 3, is set movably in interior all lateral lenses optical axis directions (fore-and-aft direction) X of collar extension 3 leisure.Ringed line circle body 15 is fixed on the periphery of lens supports body 7.
As shown in Figures 1 and 2, be provided with on lens supports body 7, be darted on outer circumferential side, the section that is associated 43 on the axis of guide 41 of being associated on Zhou Fangxiang with 180 degree intervals vacate, 2 settings that are parallel to each other.
The axis of guide 41 is cylinder.2 axis of guides 41 are arranged at the position that correspondence is associated section 43.Respectively be associated in section 43, be formed with slightly semicircular recess 45.The edge butt joint of recess 45 is in the side of the axis of guide 41.
As shown in Figure 3, the axis of guide 41 is embedded in collar extension 3 and is formed with in the embedded hole 42 of front side end, and rear side end butts up against on base and then fixed.
As shown in Figure 2, the state of nature of front side spring 9 before assembling is tabular, and it is to be the outer circumferential side 9b of the ring-type of rectangle by the plane; Be disposed at the interior week of periphery sidepiece 9b, interior all sidepiece 9a of the rounded shape in plane; 4 wrist 9c that connect periphery sidepiece 9b and interior all sidepiece 9a consist of.
The state of nature of rear side spring 11 before assembling is dull and stereotyped state, and it is to be the outer circumferential side 11b of the ring-type of rectangle by the plane; Be disposed at the interior week of periphery sidepiece 11b, interior all sidepiece 11a of the rounded shape in plane; 4 wrist 11c that connect periphery sidepiece 11b and interior all sidepiece 11a consist of.Different from front side spring 9, periphery sidepiece 11b and interior all sidepiece 11a are separated into 2 parts an of sidepiece 30 and the other side 32.
In addition, the insertion portion 46 of interting for vibrating shaft 41 is formed on rear side spring 11.
The periphery sidepiece 9b of front side spring 9 is held between framework 8 and collar extension 3.Interior all sidepiece 9a are fixed on the front end of lens supports body 7.Rear side spring 11 periphery sidepiece 11b are held between base 5 and rear side pad 17, and interior all sidepiece 11a are fixed on the rear end of lens supports body 7.Accordingly, lens supports body 7 can arbitrarily be able to supported according to front side spring 9 and rear side spring 11 at fore-and-aft direction movably.
Therefore, lens supports body 7 is in case forwards move, lens supports body 7 will the elastic force of the fore-and-aft direction of front side spring 9 and rear side spring 11 make a concerted effort and coil case 15 and magnetite 13 between the electromagnetic force that produces stop when reaching equilibrium locations.
As shown in Figure 3, lens driver 1 is fixed on the substrate 21 that is equipped with imageing sensor 19.Imageing sensor 19 is, as CCD(Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor)..
Next, assembling, effect and the effect of the lens driver 1 of relevant the invention process form are described.
In advance, the axis of guide 41, rear side spring 11, pad 17, with coil case 15 be fixed on the lens supports body 7 of periphery, collar extension 3, front side spring 9 and framework 8 that 4 magnetites 13 are fixed on bight 14 assemble fixing successively on base 5.
The axis of guide 41 is vertical to be located at follow on base 5 and to fix, and the axis of guide 41 is disposed in recess 45 in the section that is associated 43 of lens supports body 7.
When focusing drives lens supports body 7 automatically, as shown in Figure 3, from control part 23, current direction coil case 15.Accordingly, according to the electromagnetic force that produces between coil case 15 and magnetite 13, resist mutually in spring 9,11 elastic force, coil case 15 is just with lens supports body 7 side shifting before the optical axis direction together.
Current control division 23, the peak value in the high frequency field of the comparison in the middle position of imageing sensor 19 compares one by one, and the electric current that passes through makes lens supports body 7 move to the highest synthetic focal position of comparison.Like this, the comparison signal of imageing sensor 19 beginning will be fed back, will control line circle body 15 on the electric current of circulation.So, according to being associated of in the past amount of movement and current value, just can not being created in and driving the so-called hysteresis error that produces when controlling.In addition, hysteresis error is exactly the axis of guide 41 and is associated the error that the friction variation between section 43 produces.
Then, lens supports body 7 is in case forwards move, lens supports body 7 will the fore-and-aft direction elastic force of front side spring 9 and rear side spring 11 make a concerted effort and coil case 15 and magnetite 13 between the electromagnetic force that produces stop when reaching equilibrium locations.
Therefore, when lens supports body 7 is switched on to coil case 15, only depend on the electromagnetic force that produces between magnetite 13 just can move.In addition, as shown in Figure 5, when lens supports body 7 moved, it moved lens supports body 7 according to just leading with being associated of 2 place's axis of guides 41.
Even if lens supports body 7 is associated section 43 and is associated on the axis of guide 41 after synthetic Focal Point Shift, so the posture of lens supports body 7 can be maintained, can prevent from tilting to occur.
Namely, according to this example, the moving and stop being led by the axis of guide 41 of lens supports body 7, so, can prevent lens supports body 7 when mobile and the inclination of the lens supports body 7 that produces after stopping.
According to this example, maintain after the axis of guide 41 is chimeric with front end in the embedded hole 42 of collar extension 3, so can easily assemble.
The present invention does not limit above-mentioned example, only otherwise break away from the point range of wanting of the present invention, can make the possibility of all distortion.2 places that can not limit to the periphery that is arranged on lens supports body 7 such as the axis of guide 41 also can set 3 places, 4 places for, in lens supports body 7, the section that is associated are set on the position of the corresponding axis of guide 41 simultaneously.
Be not limited to be associated formation recess 45 in section 43, formation also can be inserted the axis of guide 41 in logical inlet hole behind the hole.
After the axis of guide 41 also can connect configuration with front side spring 9, fixing front end on framework 8.
In addition, the shape of the axis of guide 41 is not limited to institute's post, can be also corner post.
Claims (4)
1. lens driver, have
The lens supports body of support of lens;
Be fixed in the coil case of lens supports on external week;
The support of lens supporter carries out comfortable mobile spring;
Be arranged on lens supports body outer circumferential side, with the magnetite of coil case subtend configuration; And
Be arranged on the axis of guide of the optical axis direction of lens, to the coil case energising, when reaching equilibrium between the electromagnetic force that the magnetic field of magnetite produces and the elastic force of spring, the lens supports body moved to institute's allocation;
It is characterized in that, this lens driver also has the collar extension that the lens supports body is disposed at the ring-type in interior week, spring is disposed at the place ahead of collar extension optical axis direction and a place at rear at least, collar extension sees that from the plane of optical axis direction its profile is polygon, magnetite is disposed at each bight of collar extension, and the axis of guide is disposed between the bight of collar extension, and the lens supports body has the section that is associated that is associated the axis of guide, the lens supports body move and stop position on, the section of being associated of lens supports body is associated on the axis of guide.
2. lens driver as claimed in claim 1, is characterized in that, collar extension has to prolong to prolong to the inboard of interior all sides from periphery wall with from an end of the optical axis direction of periphery wall and section, and an end of the axis of guide is held in the inboard and prolongs on the fitting portion hole that section.
3. auto-focus camera, it is characterized in that, have claim 1～2 any one lens driver of putting down in writing, be arranged at imageing sensor, the control part of the lens imaging side of lens supports body, control part compares one by one at the peak value in the high frequency field of the comparison of imageing sensor, passes to electric current the lens supports body is moved to the highest synthetic focal position of comparison.
4. be accompanied with the mobile terminal apparatus of camera function, it is characterized in that being equipped with the auto-focus camera of claim 3 record.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010154611A JP5574292B2 (en) | 2010-07-07 | 2010-07-07 | Lens drive device, autofocus camera and mobile terminal with camera |
| JP2010-154611 | 2010-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102331614A CN102331614A (en) | 2012-01-25 |
| CN102331614B true CN102331614B (en) | 2013-06-19 |
Family
ID=45483447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110188153 Expired - Fee Related CN102331614B (en) | 2010-07-07 | 2011-07-06 | Lens drive device, automatic focus camera and mobile terminal device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5574292B2 (en) |
| CN (1) | CN102331614B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014191073A (en) * | 2013-03-26 | 2014-10-06 | Asahi Kasei Electronics Co Ltd | Position detector |
| JP2014197112A (en) * | 2013-03-29 | 2014-10-16 | オリンパス株式会社 | Electromagnetic actuator |
| CN103728712A (en) * | 2013-12-30 | 2014-04-16 | 上海比路电子有限公司 | Lens driving motor structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006271180A (en) * | 2005-03-24 | 2006-10-05 | Vasstek Internatl Corp | Voice coil motor apparatus |
| WO2007069844A1 (en) * | 2005-12-12 | 2007-06-21 | Yoosung Precision Co., Ltd. | Apparatus for automatically controlling focal point of small optical lens |
| CN101625450A (en) * | 2008-07-07 | 2010-01-13 | 三美电机株式会社 | Lens driving device |
| CN101750691A (en) * | 2008-12-05 | 2010-06-23 | 百隆光电股份有限公司 | Lens module |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401126C (en) * | 2004-04-16 | 2008-07-09 | 思考电机（上海）有限公司 | Lens driver |
| CN1940699A (en) * | 2005-09-26 | 2007-04-04 | 宾得株式会社 | Camera having automatic lens system |
| CN2862066Y (en) * | 2005-12-31 | 2007-01-24 | 一品国际科技股份有限公司 | Automatic focusing scene module |
| JP2008058732A (en) * | 2006-08-31 | 2008-03-13 | Mitsumi Electric Co Ltd | Camera module |
| JP5008414B2 (en) * | 2007-02-13 | 2012-08-22 | アルプス電気株式会社 | Lens drive device |
| JP2008203719A (en) * | 2007-02-22 | 2008-09-04 | Konica Minolta Opto Inc | Lens driving apparatus, imaging apparatus and mobile terminal |
| CN201060303Y (en) * | 2007-06-13 | 2008-05-14 | 华宏新技股份有限公司 | Lens drive apparatus with lines type preload function |
| JP5315518B2 (en) * | 2008-03-04 | 2013-10-16 | 日本電産サンキョー株式会社 | Lens drive device |
| JP2010014920A (en) * | 2008-07-03 | 2010-01-21 | Nidec Sankyo Corp | Lens drive device |
| JP5430107B2 (en) * | 2008-09-22 | 2014-02-26 | 日本電産サンキョー株式会社 | Lens drive device |
| JP2010139980A (en) * | 2008-12-15 | 2010-06-24 | Sanyo Electric Co Ltd | Lens driving device, and camera module mounted with the same |
-
2010
- 2010-07-07 JP JP2010154611A patent/JP5574292B2/en active Active
-
2011
- 2011-07-06 CN CN 201110188153 patent/CN102331614B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006271180A (en) * | 2005-03-24 | 2006-10-05 | Vasstek Internatl Corp | Voice coil motor apparatus |
| WO2007069844A1 (en) * | 2005-12-12 | 2007-06-21 | Yoosung Precision Co., Ltd. | Apparatus for automatically controlling focal point of small optical lens |
| CN101625450A (en) * | 2008-07-07 | 2010-01-13 | 三美电机株式会社 | Lens driving device |
| CN101750691A (en) * | 2008-12-05 | 2010-06-23 | 百隆光电股份有限公司 | Lens module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012018244A (en) | 2012-01-26 |
| JP5574292B2 (en) | 2014-08-20 |
| CN102331614A (en) | 2012-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10116849B2 (en) | Lens driving actuator | |
| CN108508678B (en) | OIS camera module and dual-camera system comprising same | |
| US8676048B2 (en) | Small-sized camera module for correcting hand-shake | |
| CN102466848B (en) | Lens driving device, automatic focusing camera, and moving terminal with camera | |
| CN102650722B (en) | Lens driving device, auto-focusing camera, and mobile terminal device with camera | |
| CN100516960C (en) | Lens unit and imaging apparatus | |
| CN102313964B (en) | Lens driving device, automatic focusing camera and mobile terminal device | |
| KR101653247B1 (en) | Camera actuator with function of auto-focus and image stabilize | |
| US8009373B2 (en) | Lens actuator | |
| KR102179952B1 (en) | Optical adjusting apparatus | |
| US20190049692A1 (en) | Camera lens assembly | |
| CN203275847U (en) | Lens driving device with camera shake correction function | |
| CN102043226B (en) | Lens driving device, automatic focusing camera function unit and mobile phone | |
| CN101246248A (en) | Lens module | |
| JP4719107B2 (en) | Lens drive device | |
| CN102331614B (en) | Lens drive device, automatic focus camera and mobile terminal device | |
| CN102103246B (en) | Lens driving device, automatic focusing camera and mobile phone with photographing function | |
| CN112868222A (en) | Camera actuator and camera module including the same | |
| KR20200092817A (en) | Lens assembly | |
| KR20190002852A (en) | Camera module for portable device | |
| KR101093738B1 (en) | Lens driving device enabling miniaturization and light-weight | |
| CN105659137A (en) | Lens-driving device | |
| US11156799B2 (en) | Lens driving apparatus | |
| KR101668605B1 (en) | Camera actuator for portable device | |
| JP5781883B2 (en) | Lens drive device |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: XINSIKAO ELECTRIC MOTOR CO., LTD. Free format text: FORMER OWNER: SIKAO ELECTRIC MOTOR (SHANGHAI) CO., LTD. Effective date: 20150710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150710 Address after: 314112 Jiashan City, Jiaxing province Huimin County Street, No., Jia Jia Road, building 3, 1 floor, 58 Patentee after: NEW SHICOH MOTOR Co.,Ltd. Address before: 201613 No. 38 Teng Teng Road, Songjiang District export processing zone, Shanghai, China Patentee before: SHICOH MOTOR (SHANGHAI) Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 |