CN207908846U - Optical anti-shake voice coil motor - Google Patents
Optical anti-shake voice coil motor Download PDFInfo
- Publication number
- CN207908846U CN207908846U CN201820288089.XU CN201820288089U CN207908846U CN 207908846 U CN207908846 U CN 207908846U CN 201820288089 U CN201820288089 U CN 201820288089U CN 207908846 U CN207908846 U CN 207908846U
- Authority
- CN
- China
- Prior art keywords
- axis
- coil
- group
- focusing
- magnets
- 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 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims description 75
- 238000011105 stabilization Methods 0.000 claims description 75
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract 8
- 238000010586 diagram Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 11
- 206010044565 Tremor Diseases 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 230000005292 diamagnetic effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
Landscapes
- Adjustment Of Camera Lenses (AREA)
- Lens Barrels (AREA)
Abstract
The utility model relates to an optics anti-shake voice coil motor, characterized by: the lens barrel comprises focusing coils and main magnets, wherein the main magnets are embedded on four sides of a lens barrel frame, the inner side faces of the main magnets are provided with focusing coils to form a focusing driving mechanism moving longitudinally along an optical axis, the focusing driving mechanism is connected with a shaking compensation driving mechanism, an X-axis shaking prevention coil and a Y-axis shaking prevention coil are arranged between the main magnets and the focusing coils, the X-axis magnets and the Y-axis magnets share the main magnets, the two X-axis shaking prevention coils or the two Y-axis shaking prevention coils are oppositely arranged and are connected in series to form an X-axis shaking prevention coil group or a Y-axis shaking prevention coil group, and the X-axis shaking prevention coil group or the Y-axis shaking prevention coil group respectively forms the shaking compensation driving mechanism with the corresponding X-axis magnet group and the Y-axis magnet group. Has the advantages that: the utility model discloses the size of the voice coil motor with the function of focusing now realizes focusing function and optics anti-shake function in camera module of an organic whole, has the characteristics that anti-magnetic interference ability is strong, is particularly suitable for adopting two cameras, is afraid of the condition of magnetic field interference between the camera.
Description
Technical field
The utility model belongs to optical field more particularly to a kind of optical anti-vibration voice coil motor.
Background technology
Currently, the mobile phone camera with stabilization function can effectively offset image shift caused by hand shaking, therefore trembling
Also it is capable of the photo of shooting clear under dynamic or dark environment, receives praises from customers.As shown in Figure 18 A and Figure 18 B, have simple
The voice coil motor of focus function, basic structure include that focusing coil 5, lens barrel frame 6 and four pieces of main magnet 5-1, main magnet are embedded in
Four sides of pedestal, lens barrel frame are supported in the base by the upper and lower lateral spring that upper and lower surface connects, and focusing mounting coil is in mirror
In bylinder, main magnet is embedded in four sides of pedestal and is coated on around focusing coil, and the focusing constituted along optical axis longitudinal movement is driven
Motivation structure.
Optical anti-vibration technology can be divided into three classes, respectively：Camera lens parallel-moving type (Lens Shift), camera lens shift shaft type (Lens
Tilt), camera model shift shaft type (Module Tilt).Above-mentioned three kinds difference lies in camera lens parallel-moving type anti-vibration motors：Camera lens is flat
It moves, imaging sensor is motionless；Camera lens shift shaft type anti-vibration motor：Camera lens rotates, and imaging sensor is motionless；Camera model shift shaft type is anti-
Tremble motor：Camera lens and imaging sensor rotate together, i.e. module unitary rotation.Wherein camera model shift shaft type motor needs to move
Movement parts volume is big, weight weight, suitable for application in the mobile phone camera for requiring small size small size.It is restricted by size,
The optical anti-vibration technology that mobile phone camera field mainly uses is two kinds of camera lens parallel-moving type and camera lens shift shaft type.Two kinds of technologies are respectively
Advantage and disadvantage are：Camera lens parallel-moving type motor advantage is to can compensate for larger shake, and image resolution is high, the disadvantage is that complicated.Mirror
Head shift shaft type motor advantage is simple in structure, the disadvantage is that the resolution of image border is more inferior, corner parts are out of focus fuzzy.Due to
Advantage of the camera lens parallel-moving type motor in jitter compensation ability and image resolution, becomes the mainstream of mobile phone camera anti-vibration motor
Product.
Camera lens is suspended in above imaging sensor by traditional camera lens parallel-moving type anti-vibration motor generally use suspension wire, works as fuselage
Anti-shaking module moves on camera lens edge perpendicular to optical axis direction when shake, to compensate the shake of hand.The suspension wire of this mode is for outer
Portion's impact is fragile, easily deforms, product reliability is difficult to ensure.Another way, patent document publication number
CN201610461745.7 discloses a kind of lens actuation apparatus, including：Shake compensation unit is configured to along vertical with optical axis
Direction movement；Multiple ball components support shake compensation unit, wherein a ball component in the multiple ball component from
It is different from another degree of freedom of ball component in the multiple ball component by spending.The patent application is the knot generally used in industry
Structure.X, Y-direction moveable support are supported using several balls in structure, improves impact resistance reliability.But internal structure is multiple
Miscellaneous, number of parts is more, of high cost, and overall volume is larger, is unfavorable for the miniaturization of product.Above-mentioned tradition stabilization function images head mould
Group, driving camera lens is X, Y-direction movement is to lean on, the magnet being fixed on lens barrel frame and the electromagnetism being fixed between the coil on pedestal
Power attracts each other or repels to realize, when therefore magnetic bodies is close to camera module due to being equipped with magnet on lens barrel frame
Lens barrel frame is easy to be interfered by magnetic force, and diamagnetic interference performance is very weak, and when using dual camera, two camera modules must protect
Certain distance is held, could be worked normally, and distance widens the requirement that cannot meet Cell Phone Design between two camera modules,
Therefore it is often required to need to carry out difficult choice between dual camera function and optical anti-vibration function.
The camera lens parallel-moving type stabilization horse that simple in structure, small, reliability is high and diamagnetic interference performance is strong can be designed
Up to being problem urgently to be resolved hurrily in the industry.
Utility model content
Purpose of the utility model is to overcome the shortcomings of the above technology, and to provide a kind of optical anti-vibration voice coil motor,
Increase shake compensation unit in the voice coil motor structure of existing simple focus function, realizes and taken into account with focusing and stabilization function
Voice coil motor.
The utility model to achieve the above object, using following technical scheme：A kind of optical anti-vibration voice coil motor, feature
It is：Including focusing coil, main magnet, lens barrel frame, upper and lower lateral spring and pedestal, lens barrel frame by upper and lower surface connect it is upper,
In the base, on lens barrel frame, main magnet is embedded in four sides of pedestal and is coated on pair focusing mounting coil downside spring supporting
Around focal line circle, the focusing driving mechanism along optical axis longitudinal movement is constituted, it is characterized in that：The focusing driving mechanism, which is connected with, trembles
Dynamic compensation driving mechanism, the jitter compensation driving mechanism includes X-axis group of magnets, Y-axis group of magnets, X-axis stabilization coil group and Y-axis
Stabilization coil group is equipped with X-axis stabilization coil and Y-axis stabilization coil, X-axis magnet and Y-axis magnet between main magnet and focusing coil
Main magnet is shared, opposite two blocks of main magnets constitute X-axis group of magnets or Y-axis group of magnets again, two X-axis stabilization coils or two
Y-axis stabilization coil is oppositely arranged, and X-axis stabilization coil group in series or Y-axis stabilization coil group, X-axis stabilization coil group or Y-axis
Stabilization coil group constitutes jitter compensation driving mechanism with corresponding X-axis group of magnets and Y-axis group of magnets respectively.
The focusing coil shape is in octagon or dodecagon, and the X-axis stabilization coil and Y-axis stabilization coil shape are in
Rectangle frame structure, the X-axis stabilization coil of frame and the inside casing size of Y-axis stabilization coil are identical as focusing coil thickness, and X-axis is anti-
The inside casing for trembling coil and Y-axis stabilization coil is embedded on focusing coil.
The X-axis group of magnets and Y-axis group of magnets are embedded in the corner location of pedestal respectively, and X-axis stabilization coil group or Y-axis are anti-
Coil group is trembled to be correspondingly arranged with X-axis group of magnets and Y-axis group of magnets.
Advantageous effect：Compared with prior art, the utility model is with the size of the voice coil motor of existing simple focus function
Realize that focus function and optical anti-vibration function in the optical anti-vibration voice coil motor of one, have small, at low cost, reliability
The strong feature of high, diamagnetic interference performance is particularly suitable for using dual camera, eliminates the feelings of magnetic interference between camera
Condition.
Description of the drawings
Fig. 1 is the structural decomposition diagram of embodiment 1；
Fig. 2 is the longitudinal sectional drawing of embodiment 1；
Fig. 3 is the three-dimensional longitudinal sectional drawing of embodiment 1；
Fig. 4 is two kinds of coil position schematic diagrames of embodiment 1；
Fig. 5 is the two kinds of coils and magnet positions schematic diagram of embodiment 1；
Fig. 6 is 1 two kinds of coils of embodiment and lens barrel frame assembling schematic diagram；
Fig. 7 is the magnet and lower lateral spring and pedestal assembling schematic diagram of embodiment 1；
Fig. 8 is the assembling schematic diagram of embodiment 1；
Fig. 9 is electromagnetic force schematic diagram when focusing coil is powered；
Figure 10 is electromagnetic force schematic diagram when the utility model stabilization coil is powered；
Figure 11 is the structural decomposition diagram of embodiment 2；
Figure 12 is the diagonal coil and stabilization coil position schematic diagram of embodiment 2；
Figure 13 is the two kinds of coils and magnet positions schematic diagram of embodiment 2；
Figure 14 is 2 two kinds of coils of embodiment and lens barrel frame assembling schematic diagram；
Figure 15 is the magnet and lower lateral spring and pedestal assembling schematic diagram of embodiment 2；
Figure 16 A- Figure 16 C are the partial exploded views of embodiment 3；
Figure 17 A- Figure 17 C are the partial exploded views of embodiment 4；
Figure 18 A and Figure 18 B are the structural schematic diagrams of the voice coil motor with simple focus function.
In figure：1, shell, 2, upper lateral spring, 3, X-axis magnet, 3-1, Y-axis magnet, 4, X-axis stabilization coil, 4-1, Y-axis are anti-
Tremble coil, 5, focusing coil, 5-1, main magnet, 6, lens barrel frame, 7, lower lateral spring, 8, pedestal.
Specific implementation mode
Specific embodiment of the present utility model is described in detail with reference to preferred embodiment.
Embodiment 1
Refer to attached drawing 1-8 and Figure 18 A, a kind of optical anti-vibration voice coil motor, including focusing coil 5, main magnet 5-1, lens barrel
Frame 6, upper and lower lateral spring 2,7 and pedestal 8, lens barrel frame is supported in the base by the upper and lower lateral spring that upper and lower surface connects, right
On lens barrel frame, main magnet is embedded in four sides of pedestal and is coated on around focusing coil focal line snare, constitutes vertical along optical axis
To the focusing driving mechanism of movement, the focusing driving mechanism is connected with jitter compensation driving mechanism, the jitter compensation driving
Mechanism includes X-axis group of magnets, Y-axis group of magnets, X-axis stabilization coil group and Y-axis stabilization coil group, between main magnet and focusing coil
It is equipped with X-axis stabilization coil 4 and Y-axis stabilization coil 4-1, X-axis magnet 3 and Y-axis magnet 3-1 share main magnet, i.e. wherein X-axis magnet
Two X-axis stabilization coils of dual-purpose main magnet or two Y-axis stabilization coils are oppositely arranged, and X-axis stabilization coil group in series or Y
Axis stabilization coil group, X-axis stabilization coil group or Y-axis stabilization coil group are constituted with corresponding X-axis group of magnets and Y-axis group of magnets respectively
Jitter compensation driving mechanism.Coil shape of focusing described in the present embodiment is in octagon, the X-axis stabilization coil and Y-axis stabilization line
The rectangular frame structure of loop-shaped, the X-axis stabilization coil of frame and the inside casing size of Y-axis stabilization coil and focusing coil thickness phase
Together, the inside casing of X-axis stabilization coil and Y-axis stabilization coil is embedded on focusing coil.
Embodiment 2
Refer to attached drawing 11-15 and Figure 18 A, a kind of optical anti-vibration voice coil motor, including focusing coil 5, main magnet 5-1, mirror
Bylinder 6, upper and lower lateral spring 2,7 and pedestal 8, lens barrel frame are supported in the base by the upper and lower lateral spring that upper and lower surface connects,
Mounting coil focus on lens barrel frame, main magnet is embedded in four sides of pedestal and is coated on around focusing coil, constitutes along optical axis
The focusing driving mechanism of longitudinal movement, the focusing driving mechanism are connected with jitter compensation driving mechanism, and the jitter compensation drives
Motivation structure includes X-axis group of magnets, Y-axis group of magnets, X-axis stabilization coil group and Y-axis stabilization coil group, main magnet and focusing coil it
Between be equipped with X-axis stabilization coil 4 and Y-axis stabilization coil 4-1, X-axis magnet 3 and Y-axis magnet 3-1 share main magnet, i.e. wherein X-axis magnetic
Two X-axis stabilization coils of iron dual-purpose main magnet or two Y-axis stabilization coils are oppositely arranged, and X-axis stabilization coil group in series
Or Y-axis stabilization coil group, X-axis stabilization coil group or Y-axis stabilization coil group respectively with corresponding X-axis group of magnets and Y-axis group of magnets
Constitute jitter compensation driving mechanism.Coil shape of focusing described in the present embodiment is in dodecagon.
As shown in Fig. 2, lens barrel frame is suspended in chassis interior by upper and lower lateral spring, lens barrel frame can be along X, Y, Z in chassis interior
Axis direction moves.
Operation principle
A pair of of X-axis stabilization coil is connected in series with, and coil both ends are connected to lower lateral spring, under X-axis movement control electric current passes through
Lateral spring is flowed into X-axis stabilization coil.Equally, a pair of of Y-axis stabilization coil is connected in series with, and coil both ends are connected to lower lateral spring, Y
Axis movement control electric current is flowed into Y-axis stabilization coil by lower lateral spring.The both ends of focusing coil are also connected to lower lateral spring, right
Coke control electric current is flowed into focusing coil by lower lateral spring.The spring plate group that lower lateral spring is separated from each other by 6-8 pieces at.
The mode that magnet magnetizes magnetizes for monopole, and magnetizing direction is perpendicular to the direction of optical axis, 4 pieces of magnet same pole (poles N
Or the poles S) towards optical axis.
As shown in figure 9, electric current passes through in focusing coil, upward electromagnetic force is generated, driving lens barrel frame is moved to +Z direction,
Focus on the contrary then, driving lens barrel frame moves current direction in coil to -Z direction, Z axis to movement focus.Work as focusing
After being powered off in coil, lens barrel frame is restored to home position under the action of upper and lower lateral spring.
As shown in Figure 10, electric current passes through in X-axis stabilization coil, by taking the stabilization coil of left side as an example, coil first half electric current side
To flow out direction, coil lower half current direction is inflow direction, is generated and is hung down respectively according to lefft-hand rule coil top and the bottom
Directly in the electromagnetic force in magnetic line of force direction, specifically, first half electromagnetism force direction is lower half electromagnetic force on left-hand (10 directions)
Direction is under left-hand (8 directions), and the above-mentioned coil first half is left direction with lower half electromagnetic force resultant direction, that is, drives mirror
Bylinder is moved to -X direction, and similarly, on the contrary then, driving lens barrel frame moves current direction to +X direction in X-axis stabilization coil.Y-axis
It is same as above to driving principle.Compensate shake perpendicular to the movement of the X of optical axis, Y-direction and caused by image offset.Work as stabilization
After being powered off in coil, lens barrel frame is restored to home position under the action of upper and lower lateral spring.
Lens barrel is with the focusing driving mechanism or jitter compensation driving mechanism of optical anti-vibration voice coil motor along optical axis longitudinal direction
It is mobile or along being moved perpendicular to the X of optical axis, Y-direction compensate shake and caused by image offset.
Embodiment 3
Attached drawing 16A-16C is referred to, is the optical anti-vibration voice coil motor using two identical embodiments 1, shares same
The optical anti-vibration voice coil motor for constituting dual camera is arranged in parallel in pedestal.
Embodiment 4
Attached drawing 17A-17C is referred to, is the optical anti-vibration voice coil motor using two identical embodiments 2, shares same
The optical anti-vibration voice coil motor for constituting dual camera is arranged in parallel in pedestal.
The above-mentioned detailed description that a kind of optical anti-vibration voice coil motor is carried out with reference to embodiment, be it is illustrative rather than
Limited, several embodiments can be enumerated according to limited range, therefore in the case where not departing from the utility model general plotting
Change and modification, should belong within the scope of protection of the utility model.
Claims (3)
1. a kind of optical anti-vibration voice coil motor, it is characterized in that：Including focusing coil, main magnet, lens barrel frame, upper and lower lateral spring and
Pedestal, lens barrel frame are supported in the base by the upper and lower lateral spring that upper and lower surface connects, and focus mounting coil on lens barrel frame,
Main magnet is embedded in four sides of pedestal and is coated on around focusing coil, constitutes the focusing driving mechanism along optical axis longitudinal movement,
It is characterized in that：The focusing driving mechanism is connected with jitter compensation driving mechanism, and the jitter compensation driving mechanism includes X-axis magnetic
Iron group, Y-axis group of magnets, X-axis stabilization coil group and Y-axis stabilization coil group are equipped with X-axis stabilization line between main magnet and focusing coil
Circle and Y-axis stabilization coil, X-axis magnet and Y-axis magnet share main magnet, and opposite two blocks of main magnets constitute X-axis group of magnets again
Or Y-axis group of magnets, two X-axis stabilization coils or two Y-axis stabilization coils are oppositely arranged, and X-axis stabilization coil group in series
Or Y-axis stabilization coil group, X-axis stabilization coil group or Y-axis stabilization coil group respectively with corresponding X-axis group of magnets and Y-axis group of magnets
Constitute jitter compensation driving mechanism.
2. optical anti-vibration voice coil motor according to claim 1, it is characterized in that：The focusing coil shape in octagon or
Dodecagon, the X-axis stabilization coil and the rectangular frame structure of Y-axis stabilization coil shape, the X-axis stabilization coil and Y of frame
The inside casing size of axis stabilization coil is identical as focusing coil thickness, and the inside casing of X-axis stabilization coil and Y-axis stabilization coil is embedded in pair
On focal line circle.
3. optical anti-vibration voice coil motor according to claim 1, it is characterized in that：The X-axis group of magnets and Y-axis magnet component
It is corresponding with X-axis group of magnets and Y-axis group of magnets that it is not embedded in the corner location of pedestal, X-axis stabilization coil group or Y-axis stabilization coil group
Setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820288089.XU CN207908846U (en) | 2018-03-01 | 2018-03-01 | Optical anti-shake voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820288089.XU CN207908846U (en) | 2018-03-01 | 2018-03-01 | Optical anti-shake voice coil motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908846U true CN207908846U (en) | 2018-09-25 |
Family
ID=63561456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820288089.XU Expired - Fee Related CN207908846U (en) | 2018-03-01 | 2018-03-01 | Optical anti-shake voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207908846U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153081A (en) * | 2018-03-01 | 2018-06-12 | 天津迪思科博科技发展有限公司 | Optical anti-shake voice coil motor |
| CN111474805A (en) * | 2020-05-26 | 2020-07-31 | 上海工程技术大学 | MEMS lens driver |
| CN113514930A (en) * | 2021-07-21 | 2021-10-19 | 上海比路电子股份有限公司 | Automatic focusing anti-shake periscope motor with laser etching conducting circuit |
-
2018
- 2018-03-01 CN CN201820288089.XU patent/CN207908846U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153081A (en) * | 2018-03-01 | 2018-06-12 | 天津迪思科博科技发展有限公司 | Optical anti-shake voice coil motor |
| CN111474805A (en) * | 2020-05-26 | 2020-07-31 | 上海工程技术大学 | MEMS lens driver |
| CN113514930A (en) * | 2021-07-21 | 2021-10-19 | 上海比路电子股份有限公司 | Automatic focusing anti-shake periscope motor with laser etching conducting circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108153081A (en) | Optical anti-shake voice coil motor | |
| US20210080808A1 (en) | Anti-shake compensation structure for auto-focus | |
| CN108508678B (en) | OIS camera module and dual-camera system comprising same | |
| CN102798959B (en) | Voice coil motor structure capable of realizing camera lens controlled tilt | |
| US10859846B2 (en) | Optical unit with shake correction function | |
| CN112034662B (en) | Miniature anti-shake cloud platform and camera module | |
| JP2021535443A (en) | The camera module | |
| CN107329348A (en) | A kind of lens driver with stabilization function | |
| KR101823326B1 (en) | Actuator for ois | |
| CN108476283B (en) | Camera unit, camera module and mobile terminal | |
| WO2019037159A1 (en) | Anti-shaking miniature pan-tilt integrated with camera module | |
| CN207908846U (en) | Optical anti-shake voice coil motor | |
| CN108535840A (en) | The magazine auto-focusing of compact type folding formula and optical image stabilization | |
| CN210142249U (en) | Miniature anti-shake cloud platform and camera module | |
| CN107360349A (en) | Camera system and its lens unit | |
| CN105492952A (en) | Lens driving apparatus | |
| JP2006119579A (en) | Camera movement prevention device of camera lens assembly | |
| US11333951B2 (en) | Actuator for camera | |
| US20220244565A1 (en) | Voice coil motor having five-axis ois structure, camera device, and electronic equipment | |
| US10156733B2 (en) | Lens device | |
| KR20130044438A (en) | Hand trembling compensation actuator and camera module containing the same | |
| CN110365886A (en) | A kind of optical anti-vibration camera module | |
| CN117560557B (en) | Anti-shake motor of anti-magnetic interference and camera module | |
| CN213876151U (en) | Anti-shake focusing motor and application module thereof | |
| KR101603059B1 (en) | Camera lens module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 |