CN1696814A - Automatic focusing lens - Google Patents
Automatic focusing lens Download PDFInfo
- Publication number
- CN1696814A CN1696814A CN200410043341.3A CN200410043341A CN1696814A CN 1696814 A CN1696814 A CN 1696814A CN 200410043341 A CN200410043341 A CN 200410043341A CN 1696814 A CN1696814 A CN 1696814A
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- China
- Prior art keywords
- lens
- lens mount
- guide surface
- coil
- camera lens
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- 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
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- 230000007717 exclusion Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 15
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 150000002910 rare earth metals Chemical class 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
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- Lens Barrels (AREA)
Abstract
An automatic focusing camera lens consists of coil seat for supporting a coil with containing hole being set with sustainer, camera lens seat being set with permanent magnet and leading face and being enabled to rotate in containing hole, as well as elastic component being used to sustain another end of camera lens. It features that camera lens can be rotated to change focal distance by utilizing mutual exclusion of permanent magnet to magnetic force generated by coil when the coil is connected through to the current.
Description
Technical field
The present invention relates to a kind of camera lens, be applied to digital camera, particularly a kind of autofocus lens.
Background technology
Provide people to good times add in honour of mode many kinds are arranged, and the highest real symbolic animal of the birth year sheet of frequency of utilization wherein, no matter therefore be even that travelling, party are all memorable moment, all need to use camera record in addition, recall for the user in the future, and camera development also moulding already of its compact design so far, certainly, digital camera the most in vogue at present is all the more so.
The focusing structure of present digital camera, then probably can be divided into the manual focus structure and two kinds on the structure of focusing automatically, wherein the manual focus structure can be for the focus of adjusting camera lens to image focusing position the most clearly, as for 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 metal oxide semiconductor (CMOS) (C-MOS) sensor, and controlled by the central processing unit that is arranged in the digital camera, originally camera lens is from its original position (rest position) beginning moving back and forth, when camera lens is still moving, central processing unit is checked the image that is formed on the image sensor constantly by camera lens, and camera lens stops at image focusing position the most clearly then.In this case, camera lens must constantly drive continuously back and forth along ring cam set, and ring cam set is provided with the lens driving structure, and promotes rotation by step motor, so that camera lens when step motor rotates, moves around.When camera lens moved around, central processing unit recorded image focusing moment the most clearly, sent out the signal that stops to move simultaneously to camera lens.So camera lens stops at the position (rest position) that image is best focusing, and camera lens will be turned back to the original position time, ring cam set begins to rotate once more.When camera lens returns back to the original position, be located at the other Photo Interrupter of camera lens cylinder, with the shutter that is located on the camera lens cylinder edge, the original position of detector lens, this shutter can interdict the light of penetrating type Photo Interrupter.And recording moment in original position at Photo Interrupter, camera lens moves and stops at this original position.
Therefore, such digital camera autofocus system, its camera lens is continuous drive constantly, and the detection of image is essential often lasting, and after each seizure image, camera lens must return its original position, thus suitable consuming time of these camera lens focal adjustment steps, and under most situation, can miss best image capturing opportunity, certainly, because such structure includes step motor, ring cam set and Photo Interrupter, and expend quite expensive cost.
See also the stereographic map of the automatic focusing structure of the cut-open view of automatic focusing structure of known digital camera shown in Figure 1 and known digital camera shown in Figure 2, when step motor 1 when the central processing unit of digital camera receives commencing signal, step motor 1 begins rotation, and step motor gear 2 and ring cam set gear 3 engagements that are arranged on ring cam set 4 edges, also begin rotation, then, ring cam set 4 begins rotation because ring cam set gear 3 is meshed with step motor gear 2, and location sensing bar 5 beginning along the ramped surfaces of ring cam set 4 back and forth (up and down) move, so 6 beginnings of whole camera lens assembly move around along the guide rail 7 that is arranged on camera lens assembly 6.One side of camera lens cylinder is made as a sleeve, and location sensing bar 5 is set on sleeve, become the part of sleeve, outstanding from sleeve, and on the sleeve outermost portion of camera lens assembly 6, being provided with bearing portion 8, the latter moves around along guide rail 7, is manufactured with position stability fork 9 on the opposite side of camera lens cylinder, become the part of camera lens cylinder, between the termination of position stability fork 9, then have position stability pin 10.
Bearing portion 8 and guide rail 7 are supported camera lens assembly 6 simultaneously together with position stability fork 9 and position stability pin 10.Camera lens assembly 6 is to be subjected to coil spring 12 compressing forever, towards image sensor 11, causes the tip of location sensing bar 5, is contacting the ramped surfaces of ring cam set 4 rightly forever and does not lose efficacy.
When the power switch of digital camera is opened, image is formed on the image sensor 11 by camera lens assembly 6, automatically the switch of focusing structure is once opening, the situation of image focusing is sent to central processing unit in frequent continuous mode immediately, to check the image that is formed on the image sensor 11.When the focusing of image was the most clear, central processing unit gave one and stops checking signal, even step motor 1 stall so shutter loosens, captures image.After these steps, camera lens assembly 6 must be got back to original position (rest position).On the edge of ring cam set 4, be provided with the sensing blade 13 of this position.After capturing image, ring cam set 4 beginnings rotation once more, camera lens assembly 6 is returned to the original position, and when sensing blade 13 enters in the line of rabbet joint of Photo Interrupter 14, the light beam of Photo Interrupter 14 is sensed blade 13 blocking-up, ring cam set 4 is stopped at herein immediately, so that camera lens assembly 6 can return and stop on its original position, as shown in Figure 2, the camera lens assembly is sitting on its original position.
And above-mentioned camera lens assembly 6 must move around, to allow central processing unit check the situation of image.The way of search of this best focusing is checked by the repetition image that mechanicalness and continuity camera lens move, and must be consuming time, and can miss best shutter opportunity.Complicated so in addition structure, combination is difficult for, and necessary meticulous adjusting, moreover, its spare part is also quite expensive, so a kind of very simple structure is preferably arranged, uses seldom and not expensive spare part, and save the focusing time, reduce power consumption, and reduce the space of using.
Summary of the invention
Fundamental purpose of the present invention is provides a kind of autofocus lens, to reach by very simple structure, uses seldom and not expensive spare part, and saves the focusing time, reduces power consumption, and the purpose that reduces the space of using.
According to disclosed autofocus lens, be applied to digital camera, this autofocus lens includes coil holder, lens mount and elastic parts, wherein coil holder has the coil that twines with a set direction in its outside, and offers containing hole, and this containing hole bottom is provided with to part, the lens mount surface is furnished with permanent magnet poles, rotatably be arranged at containing hole, and an end has guide surface, the contiguous part that supports of guide surface, and guide surface is the inclined-plane, elastic parts is held in the other end of lens mount, so that part is supported in the guide surface contact, and when coil electricity flows, produce magnetic force, the permanent magnet poles of lens mount and its mutual exclusion make lens mount rotate according to guide surface, and change focal length.
According to above-mentioned conception, this lens mount inside is provided with a camera lens.
According to above-mentioned conception, the material of this lens mount is the rare earth material.
According to above-mentioned conception, the material on this lens mount surface is the rare earth material.
Certainly, the material of lens mount can be rare earth, and via the action of magnetizing, and make lens mount be furnished with permanent magnet poles, so lens mount can rotate in the containing hole of coil holder.
The present invention uses seldom and not expensive spare part by very simple structure, can reach and save the focusing time, reduces power consumption, and the purpose that reduces the space of using.
Description of drawings
Fig. 1 is the cut-open view of the automatic focusing structure of known digital camera;
Fig. 2 is the stereographic map of the automatic focusing structure of known digital camera;
Fig. 3 is the exploded view of the autofocus lens of first embodiment of the invention;
Fig. 4 is the constitutional diagram of the autofocus lens of first embodiment of the invention;
Fig. 5 is another constitutional diagram of the autofocus lens of first embodiment of the invention;
Fig. 6 is the exploded view of the autofocus lens of second embodiment of the invention;
Fig. 7 is the constitutional diagram of the autofocus lens of second embodiment of the invention; And
Fig. 8 is another constitutional diagram of the autofocus lens of second embodiment of the invention.
Wherein, description of reference numerals is as follows:
1 step motor, 2 step motor gears
3 ring cam set gears, 4 ring cam sets
5 location sensing bars, 6 camera lens assemblies
7 guide rails, 8 bearing portions
9 position stabilities are pitched 10 position stability pins
11 image sensors, 12 coil springs
13 sensing blades, 14 Photo Interrupters
20 coil holders, 21 coils
22 containing holes 221 support part
30 lens mounts, 31 permanent magnet poles
32 guide surfaces, 33 camera lenses
40 elastic partss
Embodiment
The exploded view of the autofocus lens of first embodiment of the invention as shown in Figure 3, reach the constitutional diagram of the autofocus lens of first embodiment of the invention as shown in Figure 4, disclosed autofocus lens, be applied to digital camera, this autofocus lens includes coil holder 20, lens mount 30 and elastic parts 40, coil holder 20 has the coil 21 that twines with a set direction in its outside, and offer containing hole 22, containing hole 22 bottoms are provided with to part 221, and lens mount 30 inside are provided with camera lens 33, and the material of lens mount 30 is the rare earth material, the surface is furnished with permanent magnet poles 31, rotatably be arranged at containing hole 22, and an end has guide surface 32, the guide surface 32 contiguous parts 221 that support, and guide surface 32 is the inclined-plane, elastic parts 40 is held in the other end of lens mount 30, so that part 221 is supported in guide surface 32 contacts, and when coil 21 galvanizations, produce magnetic force, the permanent magnet poles 31 and coil holder 20 mutual exclusions of lens mount 30 make lens mount 30 according to guide surface 32 rotations, and change focal length.
Another constitutional diagram of the autofocus lens of first embodiment of the invention as shown in Figure 5, when lens mount 30 is located in the containing hole 22, because elastic parts 40 is held in the other end of lens mount 30, support part 221 so can make guide surface 32 contacts, and when coil 21 galvanizations, produce magnetic force, the permanent magnet poles 31 and coil holder 20 mutual exclusions of lens mount 30, make lens mount 30 according to guide surface 32 rotations, and the change focal length, just because guide surface 32 is the inclined-plane, so in lens mount 30 rotating process, lens mount 30 can be towards the outer side shifting of coil holder 20, elastic parts 40 also can make lens mount 30 be held in to part 221 simultaneously, otherwise lens mount 30 can be towards the medial movement of coil holder 20, elastic parts 40 also can make lens mount 30 be held in to part 221 simultaneously, so can change focal length.
Certainly, adopt the material of rare earth, mainly be because via the action of magnetizing, and can make lens mount 30 be furnished with permanent magnet poles 31, so lens mount 30 can rotate in the containing hole 22 of coil holder 20 as lens mount 30.
The exploded view of the autofocus lens of second embodiment of the invention as shown in Figure 6, reach the constitutional diagram of the autofocus lens of second embodiment of the invention as shown in Figure 7, disclosed autofocus lens, be applied to digital camera, this autofocus lens includes coil holder 20, lens mount 30 and elastic parts 40, coil holder 20 has the coil 21 that twines with a set direction in its outside, and offer containing hole 22, containing hole 22 bottoms are provided with to part 221, and lens mount 30 inside are provided with camera lens 33, and the material on lens mount 30 surfaces is the rare earth material, the surface is furnished with permanent magnet poles 31, rotatably be arranged at containing hole 22, and an end has guide surface 32, the guide surface 32 contiguous parts 221 that support, and guide surface 32 is the inclined-plane, elastic parts 40 is held in the other end of lens mount 30, so that part 221 is supported in guide surface 32 contacts, and when coil 21 galvanizations, produce magnetic force, the permanent magnet poles 31 and coil holder 20 mutual exclusions of lens mount 30 make lens mount 30 according to guide surface 32 rotations, and change focal length.
Another constitutional diagram of the autofocus lens of second embodiment of the invention as shown in Figure 8, when lens mount 30 is located in the containing hole 22, because elastic parts 40 is held in the other end of lens mount 30, support part 221 so can make guide surface 32 contacts, and when coil 21 galvanizations, produce magnetic force, the permanent magnet poles 31 and coil holder 20 mutual exclusions of lens mount 30, make lens mount 30 according to guide surface 32 rotations, and the change focal length, just because guide surface 32 is the inclined-plane, so in lens mount 30 rotating process, lens mount 30 can be towards the outer side shifting of coil holder 20, elastic parts 40 also can make lens mount 30 be held in to part 221 simultaneously, otherwise lens mount 30 can be towards the medial movement of coil holder 20, elastic parts 40 also can make lens mount 30 be held in to part 221 simultaneously, so can change focal length.
Certainly, adopt the material of rare earth, mainly be because via the action of magnetizing, and can make lens mount 30 surfaces be furnished with permanent magnet poles 31, so lens mount 30 can rotate in the containing hole 22 of coil holder 20 as lens mount 30 surfaces.
The above only is the present invention's preferred embodiment wherein, is not to be used for limiting practical range of the present invention; Be all, be all claim of the present invention and contain according to equalization variation and modification that the present invention did.
Claims (4)
1. an autofocus lens is applied to a digital camera, and this autofocus lens includes:
One coil holder has the coil that twines with a set direction in its outside, and offers a containing hole, and this containing hole bottom is provided with one and supports part;
One lens mount, the surface is furnished with permanent magnet poles, rotatably is arranged at this containing hole, and an end has a guide surface, and this guide surface is contiguous should to support part, and this guide surface is the inclined-plane; And
One elastic parts is held in the other end of this lens mount, so that this guide surface contact should be supported part, and when this coil electricity stream, produces magnetic force, and this permanent magnet poles of this lens mount and its mutual exclusion make this lens mount according to this guide surface rotation, and the change focal length.
2. autofocus lens according to claim 1 is characterized in that this lens mount inside is provided with a camera lens.
3. autofocus lens according to claim 1, the material that it is characterized in that this lens mount is the rare earth material.
4. autofocus lens according to claim 1, the material that it is characterized in that this lens mount surface is the rare earth material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100433413A CN100378570C (en) | 2004-05-14 | 2004-05-14 | Automatic focusing lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100433413A CN100378570C (en) | 2004-05-14 | 2004-05-14 | Automatic focusing lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696814A true CN1696814A (en) | 2005-11-16 |
| CN100378570C CN100378570C (en) | 2008-04-02 |
Family
ID=35349586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100433413A Expired - Fee Related CN100378570C (en) | 2004-05-14 | 2004-05-14 | Automatic focusing lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100378570C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009949A1 (en) * | 2007-07-13 | 2009-01-22 | New Ken Technologies Co., Ltd. | Magnetic controlled zoom lens module |
| CN100468114C (en) * | 2005-12-16 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Shock-absorbing structure of lens and digital camera lens therewith |
| CN101452106B (en) * | 2007-12-06 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN101086547B (en) * | 2006-06-09 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000131586A (en) * | 1998-10-29 | 2000-05-12 | Toshiba Corp | Electromagnetic-motor incorporated camera device |
| CN2385354Y (en) * | 1999-08-05 | 2000-06-28 | 华晶科技股份有限公司 | Focusing trimming device for digital camera |
| CN1368658A (en) * | 2001-02-09 | 2002-09-11 | 力捷电脑股份有限公司 | Automatic focusing mechanism and method |
| CN1395145A (en) * | 2001-07-06 | 2003-02-05 | 雅客设计有限公司 | Control system of zoom lens of digital camera |
| KR100431260B1 (en) * | 2001-08-29 | 2004-05-12 | 삼성전기주식회사 | Image module |
| JP2003207708A (en) * | 2002-01-11 | 2003-07-25 | Shicoh Eng Co Ltd | Lens driving unit |
| CN100395648C (en) * | 2002-10-18 | 2008-06-18 | 光宝科技股份有限公司 | Automatic zoom lens focusing device |
-
2004
- 2004-05-14 CN CNB2004100433413A patent/CN100378570C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468114C (en) * | 2005-12-16 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Shock-absorbing structure of lens and digital camera lens therewith |
| CN101086547B (en) * | 2006-06-09 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| WO2009009949A1 (en) * | 2007-07-13 | 2009-01-22 | New Ken Technologies Co., Ltd. | Magnetic controlled zoom lens module |
| CN101452106B (en) * | 2007-12-06 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100378570C (en) | 2008-04-02 |
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Legal Events
| Date | Code | Title | Description |
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| 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181113 Address after: Room 2018, Sha Tin business centre, 24 Sha Tau Street, 18, Fo Tan Shan, New Territories, Hongkong, China Patentee after: Lijing Innovation Co., Ltd. Address before: Taipei City, Taiwan, China Patentee before: Lite-On Technology Corporation |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20190514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |