CN101078804B - Lens module - Google Patents
Lens module Download PDFInfo
- Publication number
- CN101078804B CN101078804B CN200610060758XA CN200610060758A CN101078804B CN 101078804 B CN101078804 B CN 101078804B CN 200610060758X A CN200610060758X A CN 200610060758XA CN 200610060758 A CN200610060758 A CN 200610060758A CN 101078804 B CN101078804 B CN 101078804B
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- CN
- China
- Prior art keywords
- magnetic element
- lens module
- camera lens
- lens barrel
- magnetic
- 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
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Abstract
The invention provides a lens module group, comprising a lens seat and a lens tube set in the lens seat. The lens module group comprises a driving mechanism for driving the lens tube move in the lens seat and a guiding mechanism for guiding the lens tube to move. The driving mechanism comprises at least a first magnetic component added with the lens seat and at least a second magnetic component added with the lens tube matched with the first magnetic component. The guiding mechanism comprises at least a sliding component set on the lens tube and at least a guiding moving part with axial guiding direction set on the lens seat matched with the sliding component. Because one of two magnetic components has closed magnetic circuit there is no influence from external electromagnetic field when lens module group works. It is provided with high stability.
Description
Technical field
The present invention relates to a kind of camera lens module, particularly a kind of electromagnetic force drives the camera lens module of focusing.
Background technology
At present, the application of camera lens module on the mobile phone digital camera of fixed focal length is comparatively universal.This camera is mostly by regulating the distance between camera lens and image sensor, makes the imaging surface that drops on image sensor as the plane, thereby improves image quality.
Utilize electromagnetic force drive camera lens to move and realize that focusing is a kind of camera lens focusing method of comparatively popularizing.Existing electromagnetic force drives focusing lens module and generally includes a lens barrel and a sleeve, and lens barrel is a magnet ring, and sleeve is wound with coil.Lens barrel outer wall and sleeve lining all are formed with screw thread, and lens barrel is sheathed in the sleeve in the mode that activity screws togather.Lens barrel is subjected to the toroidal electromagnetic induction of sleeve and start is rotated, and is implemented in telescopic moving focusing in the sleeve.
Described camera lens module is realized the camera lens focusing by the interaction between two magnetic elements, yet two work magnetic elements are not the closed magnetic circuit magnetic elements, are subjected to external electromagnetic field to disturb job insecurity easily.
Summary of the invention
In view of this, be necessary to provide a kind of electromagnetic force of external electromagnetic fields that is not subjected to drive the camera lens module of focusing.
A kind of camera lens module comprises that a microscope base, is sheathed on lens barrel, in the described microscope base and drives the driving mechanism that lens barrel moves and the guide mechanism of a guide cylinder moving direction in microscope base.Described driving mechanism comprise at least one first magnetic element that is attached to microscope base and match with it at least one be attached to second magnetic element of lens barrel.At least one is the electromagnetism magnetic element in described first and second magnetic element, described first magnetic element has closed magnetic circuit, the pole polarity at the described second magnetic element two ends is identical, and described second magnetic element is between the magnetic pole at the described first magnetic element two ends, and the magnetic pole at the described second magnetic element two ends magnetic pole with the two ends of described first magnetic element respectively is relative.Described guide mechanism comprise at least one sliding part of being located at lens barrel and match with it at least one be located at microscope base and have the axially directed moving part of leading.
With respect to prior art, owing to have a magnetic element to have closed magnetic circuit in two magnetic elements of driving mechanism, be not subjected to external electromagnetic fields during work, stability is high.
Description of drawings
Fig. 1 is the cut-open view of camera lens module of the present invention preferred embodiment;
Fig. 2 is a camera lens module shown in Figure 1 cut-open view along the II-II direction;
Fig. 3 is the enlarged diagram of part shown in the camera lens module III shown in Figure 1.
Embodiment
Camera lens module of the present invention can be applicable to digital camera or personal digital assistant, and (Personal Digital Assistant PDA) waits in the portable electron device, and embodiment is example with the numerical camera mould, and the structure and the application of camera lens module of the present invention are described.See also Fig. 1 to Fig. 3, the numerical camera mould 100 of present embodiment comprises a camera lens module 10 and an image sensor 5.Described camera lens module 10 comprises that a microscope base 2, is sheathed on lens barrels 1, in the microscope base 2 and drives lens barrel 1 mobile driving mechanism 4 and guide mechanism 3 of a guide cylinder 1 moving direction microscope base 2 in.
Guide mechanism 3 is included in the fin 12 that lens barrel 1 outer wall radially extends and three motion guide rods 32 that are anchored on base 22 with screw-in version that match with fin 12.Offer through hole 121 on the fin 12, through hole 121 is sheathed on the motion guide rod 32.Motion guide rod 32 is formed with 3 threaded area 321,322 and 323, and wherein threaded area 323 spiral shells enter the installation hole on the base 22, and so that motion guide rod 32 is anchored on base 22, motion guide rod 32 length directions are parallel to lens barrel axis 13.Threaded area 321 and 322 has screwed togather nut 331 and 332, and nut limits the moving range of fin 12 on motion guide rod 32 as limiting section.When fin 31 during near nut 331, claim lens barrel 1 to be positioned at close shot and take the position, when fin 31 during, claim that lens barrel 1 is positioned at the vista shot position near nut 332.
Driving mechanism 4 comprises that three C shape electromagnet with closed magnetic circuit that are attached to sleeve 2 inwalls reach three the strip permanent magnetism elements that are attached to lens barrel 1 outer wall that match with C shape electromagnet.C shape electromagnet comprises C shape body 411 and is wrapped in 411 coil 412.Strip permanent magnetism element comprises two blocks of permanent magnets 421 and a junction 422, and connecting portion 422 connects an end of two permanent magnets, 421 same pole polarity, and so, the magnetic pole 413 at permanent magnetism element two ends and 414 polarity are identical.Connecting portion 422 can be that metal also can be plastics, and present embodiment adopts plastic material.Strip permanent magnetism element is between the magnetic pole 423 and 424 at two ends of C shape electromagnet, and magnetic pole 423 and 424 is just relative with magnetic pole 413 and 414 respectively.
Above-mentioned fin 31 and the alternate isogonism of strip permanent magnetism element are distributed on lens barrel 1 circumference.
During assembling, fin 12 is integrally formed in lens barrel 1 outer wall, and strip permanent magnetism element is fixedly arranged on lens barrel 1 outer wall.Guide rod 32 spiral shells are entered the installation hole of base 22, so that guide rod 32 is fixedly arranged on base 22.Lock and limit nut 332, fin 12 is arranged on the guide rod 32, lock and limit nut 331, the position is taken to determine vista shot position and close shot in the position of setting nut.With the C shape electromagnet sleeve 21 of packing into, be set to again on the lens barrel 1.Sleeve 21 is screwed to ring part 221, so that sleeve 21 is installed on the lens mount 22.
During work, two end magnetic poles 413 and 414 of strip permanent magnetism element are N (arctic), the energising of C shape electromagnet, it 423 is S (South Pole), 424 is N, then to nut 331 directions, lens barrel 1 moves to nut 331 C shape electromagnet to strip permanent magnetism element acting force, is fixed in close shot at last and takes the position.At this moment, can take scenery nearby.Take scenery at a distance if change, can change C shape electromagnet energising direction, the force direction between magnet changes, and lens barrel will be fixed in the vista shot place.
Guide mechanism 3 has 3 motion guide rods 32 and its parallel lens barrel 1 axis 13 of leading, and can avoid lens barrel to move optical axis off normal in the focus process.Drive the magnetic element isogonism and be arranged on lens barrel 1 circumference, make that lens barrel 1 is stressed even, the moving process resistance is little, non-jitter.
Be appreciated that above-mentioned driving mechanism is not limited to above-mentioned embodiment.As above-mentioned strip magnetic element also can be the electromagnetism magnetic element, and it comprises two electromagnet and a junction, the direction of winding difference of two electromagnet, so when energising, the magnetic pole magnetic at two ends is identical.Keep C shape electromagnet energising direction constant or C shape electromagnet replaced to C shape permanent magnet,, can drive lens barrel equally and move up and down by changing the energising direction of strip magnetic element.
The shape that is appreciated that described two magnetic elements also is not limited to the shape among the embodiment, is not limited to C shape as C shape electromagnet, can be other shapes, as long as it has closed magnetic circuit.The strip magnetic element also can be other shapes, needs only it and holds the relative pole polarity of magnetic pole identical with two of C shape electromagnet.
Be appreciated that the outer wall that also C shape electromagnet can be attached to lens barrel, and the strip magnetic element is attached to the inwall of sleeve, also can drive lens barrel and move.Be that described two magnetic element transpositions also can drive lens barrel and move.
Being appreciated that guide mechanism also can have other embodiment, as long as lens barrel all can be adopted to the guide mechanism that moves in limited range along barrelshift, be the projection that extends in lens barrel as sliding part, and the portion that leads is one section groove of sleeve lining.
Claims (9)
1. camera lens module comprises that a microscope base and is sheathed on the lens barrel in the described microscope base, is characterized in that: described camera lens module comprises that also one drives the driving mechanism that lens barrel moves and the guide mechanism of a guide cylinder moving direction in microscope base; Described driving mechanism comprise at least one first magnetic element that is attached to microscope base and match with it at least one be attached to second magnetic element of lens barrel; At least one is the electromagnetism magnetic element in described first and second magnetic element, described first magnetic element has closed magnetic circuit, the pole polarity at the described second magnetic element two ends is identical, and described second magnetic element is between the magnetic pole at the described first magnetic element two ends, and the magnetic pole at the described second magnetic element two ends magnetic pole with the two ends of described first magnetic element respectively is relative; Described guide mechanism comprise at least one sliding part of being located at lens barrel and match with it at least one be located at microscope base and have the axially directed moving part of leading.
2. camera lens module as claimed in claim 1 is characterized in that: described first magnetic element is a C shape magnetic element.
3. camera lens module as claimed in claim 1 is characterized in that: described second magnetic element is the permanent magnetism element, and it comprises two strip permanent magnet and a junction, and described connecting portion connects the identical two ends of described two permanent magnet pole polarity.
4. camera lens module as claimed in claim 1 is characterized in that: described guide mechanism comprises that 3 isogonisms are distributed in sliding part and a plurality of moving part of leading of being located at microscope base that matches with it on the lens barrel circumference.
5. camera lens module as claimed in claim 1 is characterized in that: the described moving part of leading comprises a body and two limiting sections, and described limiting section limits sliding part moving range in the axial direction.
6. camera lens module as claimed in claim 5 is characterized in that: described sliding part is the fin that extends on lens barrel, offers through hole on it, and the described moving part body of leading is shaft-like; Described fin through hole is sheathed on leads between shaft-like body two limiting sections of moving part.
7. camera lens module as claimed in claim 6 is characterized in that: the described shaft-like body of moving part of leading is formed with a plurality of threaded area, leads the moving part limiting section for being fixedly arranged on two nuts of leading on the shaft-like body of moving part by the screw thread combination for described two.
8. camera lens module as claimed in claim 1 is characterized in that: the described moving part of leading is anchored on the microscope base with screw-in version.
9. camera lens module as claimed in claim 1 is characterized in that: described microscope base comprises that a base and is installed on the base for the sheathed sleeve of lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610060758XA CN101078804B (en) | 2006-05-24 | 2006-05-24 | Lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610060758XA CN101078804B (en) | 2006-05-24 | 2006-05-24 | Lens module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101078804A CN101078804A (en) | 2007-11-28 |
| CN101078804B true CN101078804B (en) | 2010-07-28 |
Family
ID=38906360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610060758XA Expired - Fee Related CN101078804B (en) | 2006-05-24 | 2006-05-24 | Lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101078804B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914850B (en) * | 2012-10-31 | 2014-12-24 | 中国科学院长春光学精密机械与物理研究所 | Bidirectional electromagnetic lens driving device |
| CN114553987A (en) * | 2020-11-26 | 2022-05-27 | 华为技术有限公司 | Camera module, motor structure and electronic equipment |
| CN114764177A (en) * | 2022-04-13 | 2022-07-19 | 惠州Tcl移动通信有限公司 | Camera module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4769803A (en) * | 1985-03-13 | 1988-09-06 | Olympus Optical Co., Ltd. | Optical information recording and/or reproducing apparatus |
| CN1719330A (en) * | 2004-07-05 | 2006-01-11 | 鸿友科技股份有限公司 | Focusing structure |
-
2006
- 2006-05-24 CN CN200610060758XA patent/CN101078804B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4769803A (en) * | 1985-03-13 | 1988-09-06 | Olympus Optical Co., Ltd. | Optical information recording and/or reproducing apparatus |
| CN1719330A (en) * | 2004-07-05 | 2006-01-11 | 鸿友科技股份有限公司 | Focusing structure |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-23037A 2002.01.23 |
| JP特开平9-22042A 1997.01.21 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101078804A (en) | 2007-11-28 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20170524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |