CN103472563A - Automatic-zooming device of mobile phone lens based on IPMC (Ionic Polymer-Metal Composites) driver - Google Patents
Automatic-zooming device of mobile phone lens based on IPMC (Ionic Polymer-Metal Composites) driver Download PDFInfo
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- CN103472563A CN103472563A CN2013103860772A CN201310386077A CN103472563A CN 103472563 A CN103472563 A CN 103472563A CN 2013103860772 A CN2013103860772 A CN 2013103860772A CN 201310386077 A CN201310386077 A CN 201310386077A CN 103472563 A CN103472563 A CN 103472563A
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Abstract
The invention discloses an automatic-zooming device of a mobile phone lens based on an IPMC (Ionic Polymer-Metal Composites) driver. The automatic-zooming device comprises a base, a counter electrode, the IPMC driver and a cover plate, wherein the upper part of the base is a circular boss, the interior of the base is an up and down through cylinder cavity, and outer clamping grooves are symmetrically formed in the outer side of the circular boss; the counter electrode is two annular electrode plates with side lugs and is arranged at the end part of the circular boss; the IPMC driver comprises an edge restraining zone close to a periphery part and free zones of other parts, the edge restraining zone is placed between the two annular electrode plates, and the free zones are embedded in an optical lens; the exterior of the cover plate is a short cylinder, the interior of the cover plate is a semi-closed cavity, the shape of the semi-closed cavity is matched with the shape of the circular boss of the base, and inner clamping grooves are symmetrically formed in the inner wall of the semi-closed cavity, directly lead to the lower end of the cover plate and horizontally turn off, thus forming ladder-shaped clamping grooves; the cover plate is assembled on the base, the semi-closed cavity is in matching connection with the boss of the base, and the distance between the end part of the boss of the base and the lower part of the semi-closed cavity of the cover plate is no more than the sum of the thicknesses of the two electrode plates and the IPMC driver.
Description
Technical field
The present invention relates to a kind of camera lens Automatic zoom lens focusing device, be specifically related to a kind of ionic polymer metal composite material (Ionic Polymer-Metal Composites that utilizes, the IPMC material) as driver part, resin material is as structure, the device for the autozoom of mobile phone camera lens optics that adopts packaging technology to prepare.
Background technology
In optical lens zoom drive system, straight-line microminiature driving element plays an important role.At present, each is variant because of the difference of optical system for the focusing mode of mobile phone cam, focusing element in optical lens drive system in practical application mainly contains voice coil motor (Voice Coil Motor, VCM) (patent documentation 200810303388.7), step motor (patent documentation 201010299770.2) and ultrasonic motor (patent documentation 200410078781.2) etc.In the driving process, the VCM complex structure, stroke is subject to Current Control, and power consumption is generated heat greatly and easily, affect device lifetime, and step motor and ultrasonic motor exists defect at aspects such as physical construction or control loops.
Emerging electroactive polymeric material (Electroactive polymers is called for short EAP) is a kind of new function material.As a kind of typical electric active material, IPMC adds under electric excitation outside can produce large deformation, and after excitation is removed, it can return to original geomery again; In addition, deformation occurs in this material under external force, can produce corresponding electric signal under certain condition.With respect to the traditional intelligence material, the IPMC material has that quality is light, motion flexibly, energy consumption is low, be easy to be shaped and stand large deformation and the outstanding advantages such as indefatigability damage, makes it become rapidly a study hotspot in the intellectual material field.Therefore, the IPMC material can overcome as the optical lens actuator deficiency that the conventional ADS driving mode is brought.
At present, abroad some enterprises and research institution have carried out Primary Study to take the IPMC material on as basic microminiature actuation applications to the optical lens driver.Japan EAMEX company has developed a kind of microminiature of the IPMC for mobile lens Zoom control actuator, and the people such as the graduate Hyung-Kun Lee of Korea S's telecommunications have developed the mobile lens imaging device with autozoom function.In addition, the people such as the Sung-Joo Kim of Korea S Univ Yonsei Seoul utilize solion as solvent, have improved the performance of IPMC, have developed on this basis a set of drive unit of the IPMC for automatic focusing system.Yet these research work all lay particular emphasis on the implement device focusing function, shorter mention activation configuration design and optimization problem.
Summary of the invention
The device that can realize the mobile phone camera lens optical zoom that the object of the present invention is to provide a kind of IPMC of employing to drive,
For reaching above purpose, the present invention takes following technical scheme to be achieved:
A kind of mobile lens Automatic zoom lens focusing device based on the IPMC driver, it is characterized in that, comprise base, pair of electrodes, IPMC driver and cover plate on same central axis, described base consists of polycrystalline substance and upper circular boss, base inside is straight-through up and down cylindrical cavity, and round boss outside symmetry has exterior bayonet slot; Described electrode for the ring electrode sheet of picking up the ears, is arranged on the round boss end, two electrodes pick up the ears to be in 180 °; Described IPMC driver is circular piece, comprises that the edge constraint district is placed between two ring electrode sheets near the edge constraint district of outer peripheral portion and the free zone of other parts, and free zone embeds optical lens; Described cover plate outside is short cylinder, and inside is semi-enclosed cavity, and its shape matches with the shape of base round boss, and this semi-enclosed cavity inwall is arranged with that inner card cage passes straight through to the cover plate lower end and level turns out the stepped draw-in groove of formation; Cover plate is assembled on base, semiclosed cavity and base boss are connected, the distance of base boss end below the semiclosed cavity of cover plate is not more than the thickness sum of two plate electrodes and IPMC driver.
In such scheme, described IPMC driver, its free zone is shaped as lobe shape, annular or similar structures.Described free zone diameter is defined as 2-6mm.Described lobe figurate number order is defined as 4-12.
Described base polycrystalline substance is square, and its symmetria bilateralis is provided with the lug with through hole; The described cover plate short cylinder outside also is arranged with the lug with through hole, and square both sides, described base bottom lug is mutually corresponding with the outer both sides of cover plate lug, with bolt, connects.
Described base bottom square both sides lug and exterior bayonet slot just differ 90 ° in the plane; The outer both sides lug of described cover plate and stepped draw-in groove also just differ 90 ° in the plane.
The advantage of mobile lens Automatic zoom lens focusing device of the present invention is, according to the deformation characteristics of IPMC material, to adopt intelligent IPMC material as linear actuator; Designed novel drives structure, the behaviour area of inlaying camera lens is designed with the plum blossom flap makes IPMC internal modification part symmetrical circumferentially, is conducive to the stable of linear drives.The present invention is simple in structure, and manufacturing process is convenient, if can popularize use, by reducing energy consumption and the complex structure problem of mobile phone cam driving element, has good application value.
The accompanying drawing explanation
The wiring layout that Fig. 1 is mobile phone cam optical focus of the present invention and zoom lens control device.
The vertical view that Fig. 2 is base in Fig. 1.
The vertical view that Fig. 3 is Fig. 1 cover plate.
Fig. 4 is the IPMC driver schematic diagram in Fig. 1.Wherein: a) be lobe shape driver; B) be annular driver.
In Fig. 1～Fig. 4: 1, base, 1-1, through hole, 1-2, exterior bayonet slot, 1-3, straight cavity, 1-4, boss, 2, electrode, 3, the IPMC driver, 3-1, confining region, 3-2, free zone, 4, cover plate, 4-1, through hole, 4-2, stepped appearance draw-in groove, 4-3, semi-enclosed cavity.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
With reference to figure 1～Fig. 4, a kind of mobile lens Automatic zoom lens focusing device based on the IPMC driver, comprise base 1, pair of electrodes 2, IPMC driver 3, cover plate 4 with a common central axis (optical axis).Electrode, for the ring electrode sheet of picking up the ears, can adopt commercially available copper electrode material, and line is cut into.Bonding IPMC driver 3 between two electrode slices.
The base polycrystalline substance is square, round boss 1-4 is arranged at square top, boss outside symmetry has exterior bayonet slot 1-2, square reaching with the boss centre of its one has the straight cavity 1-3 be communicated with, square symmetria bilateralis is provided with the lug with through hole 1-1, and through hole 1-1 and exterior bayonet slot 1-2 just differ 90 ° (Fig. 2) in the plane.
Base and cover plate adopt resin material or the preparation of other hard insulations.Resin material can adopt hot-forming or 3D printing technique.Add and need guarantee that base and cover plate are on same central axis man-hour.Because the bottom surface of base plate contacts with photo-sensitive cell peripheral circuits plate, need to guarantee have certain flatness.The stepped draw-in groove 4-2 of base draw-in groove 1-2 and cover plate, be convenient to fix with the electrode 2 of picking up the ears and guarantee positioning precision.
IPMC driver 3 is disc, and its interior shape is lobe shape, annular or other similar structures, and the circular piece edge is confining region 3-1, and other parts are free zone 3-2.Several Ban Xing district mutually insulateds, surface electrode is even; The surface electrode of annulus or other similar structures also requires evenly.Lobe figurate number order is defined as 4-12 (the present embodiment is 8), and free zone 3-2 diameter (internal diameter of confining region 3-1) is defined as 2-6mm(Fig. 4).Lobe shape structure and loop configuration can adopt the machine cuts mode to realize.Increase the IPMC power output in the situation that do not reduce displacement, can adopt the mode of multi-disc IPMC material stack, can also adopt cast film processes to prepare thick IPMC material.In order to obtain the IPMC material without lax and stable performance, the present invention also can adopt patent documentation " a kind of packaging technology of IPMC driver ", and (application number: 201110255830.5) described method is encapsulated the IPMC material simultaneously.
One plate electrode 2 is sticked on to base boss 1-4 end, and electrode is picked up the ears to align with one of them base draw-in groove 1-2, and along this draw-in groove downward bending.The following confining region 3-1 of disc IPMC driver 3 is fixed on the ring electrode of base boss 1-4 end, another plate electrode is sticked on to confining region 3-1 above IPMC driver 3 upper (electrode pick up the ears align with the stepped draw-in groove 4-2 of cover plate), IPMC driver and upper and lower electrode 2 are fitted tightly.The formed free zone of IPMC driver lobe shape, annular or other similar structures embeds optical lens.
Then cover plate is assembled on base, the semiclosed cavity of cover plate and base boss 1-4 are connected, base two side bayonet slot 1-2 are corresponding with the stepped draw-in groove 4-2 in cover plate both sides, and base both sides lug is mutually corresponding with cover plate both sides lug, make through hole 1-1,4-1 (wearing bolt is connected and fixed) with one heart.After assembling, the distance of base boss 1-4 end below the semiclosed cavity of cover plate is not more than the thickness sum of two plate electrodes and circular drives device.By IPMC driver overlying electrode 2 pick up the ears fold the cover plate lower end along stepped draw-in groove 4-2, upper and lower electrode picks up the ears to be in 180 °.
Below the zoom lens control device base finally Fig. 1 assembled square, be fixed on the photo-sensitive cell of mobile phone.
Between picking up the ears, two annular electro pole pieces apply the voltage that is no more than 3V, electric signal is incorporated between two electrode slices 2, voltage be applied on IPMC driver 3, confining region 3-1(outward flange due to IPMC driver 3) fixing, deformation mechanism according to the IPMC material, internal drive free zone 3-2 will occur bending and deformation, because the internal drive crushed element is symmetrical circumferentially, and then general performance is for rising or descending, at this moment, be fixed on mobile lens on the center (free zone 3-2) of IPMC driver under the effect of IPMC material deformation, realize the axial linear movement of camera lens, and then realize the autozoom function.
Claims (6)
1. the mobile lens Automatic zoom lens focusing device based on the IPMC driver, it is characterized in that, comprise base, pair of electrodes, IPMC driver and cover plate on same central axis, described base consists of polycrystalline substance and upper circular boss, base inside is straight-through up and down cylindrical cavity, and round boss outside symmetry has exterior bayonet slot; Described electrode for the ring electrode sheet of picking up the ears, is arranged on the round boss end, two electrodes pick up the ears to be in 180 °; Described IPMC driver is circular piece, comprises that the edge constraint district is placed between two ring electrode sheets near the edge constraint district of outer peripheral portion and the free zone of other parts, and free zone embeds optical lens; Described cover plate outside is short cylinder, and inside is semi-enclosed cavity, and its shape matches with the shape of base round boss, and this semi-enclosed cavity inwall is arranged with that inner card cage passes straight through to the cover plate lower end and level turns out the stepped draw-in groove of formation; Cover plate is assembled on base, semiclosed cavity and base boss are connected, the distance of base boss end below the semiclosed cavity of cover plate is not more than the thickness sum of two plate electrodes and IPMC driver.
2. the mobile lens Automatic zoom lens focusing device based on the IPMC driver as claimed in claim 1, is characterized in that, described IPMC driver, and its free zone is shaped as lobe shape, annular or similar structures.
3. the mobile lens Automatic zoom lens focusing device based on the IPMC driver as claimed in claim 2, is characterized in that, described free zone diameter is defined as 2-6mm.
4. the mobile lens Automatic zoom lens focusing device based on the IPMC driver as claimed in claim 2, is characterized in that, described lobe figurate number order is defined as 4-12.
5. the mobile lens Automatic zoom lens focusing device based on the IPMC driver as claimed in claim 1, is characterized in that, described base polycrystalline substance is square, and its symmetria bilateralis is provided with the lug with through hole; The described cover plate short cylinder outside also is arranged with the lug with through hole, and square both sides, described base bottom lug is mutually corresponding with the outer both sides of cover plate lug, with bolt, connects.
6. the mobile lens Automatic zoom lens focusing device based on the IPMC driver as claimed in claim 5, is characterized in that, described base bottom square both sides lug and exterior bayonet slot just differ 90 ° in the plane; The outer both sides lug of described cover plate and stepped draw-in groove also just differ 90 ° in the plane.
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| CN201310386077.2A CN103472563B (en) | 2013-08-29 | 2013-08-29 | Mobile lens Automatic zoom lens focusing device based on IPMC driver |
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| CN201310386077.2A CN103472563B (en) | 2013-08-29 | 2013-08-29 | Mobile lens Automatic zoom lens focusing device based on IPMC driver |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106057028A (en) * | 2016-05-18 | 2016-10-26 | 西安交通大学 | Braille touch screen device based on IPMC driving |
| CN106860956A (en) * | 2017-03-17 | 2017-06-20 | 苏州艾伊帕微动力科技有限公司 | Portable Automatic monitoring/the doser of chronic disease that a kind of flexible Micropump drives |
| CN109899272A (en) * | 2019-04-02 | 2019-06-18 | 河海大学常州校区 | A kind of flexible Micropump based on IPMC material |
| WO2021249473A1 (en) * | 2020-06-12 | 2021-12-16 | 维沃移动通信有限公司 | Driving apparatus, camera module, and electronic device |
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| WO2009072748A1 (en) * | 2007-12-04 | 2009-06-11 | Hysonic.Co., Ltd. | Camera module using polymer metal composite |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057028A (en) * | 2016-05-18 | 2016-10-26 | 西安交通大学 | Braille touch screen device based on IPMC driving |
| CN106860956A (en) * | 2017-03-17 | 2017-06-20 | 苏州艾伊帕微动力科技有限公司 | Portable Automatic monitoring/the doser of chronic disease that a kind of flexible Micropump drives |
| CN109899272A (en) * | 2019-04-02 | 2019-06-18 | 河海大学常州校区 | A kind of flexible Micropump based on IPMC material |
| WO2021249473A1 (en) * | 2020-06-12 | 2021-12-16 | 维沃移动通信有限公司 | Driving apparatus, camera module, and electronic device |
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Effective date of registration: 20210401 Address after: 313012 No.88 yaoweimu, nijiatan village, Shuanglin Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: HUZHOU ZHONGCHUANG XIAOWEI PIONEER PARK ENTERPRISE MANAGEMENT Co.,Ltd. Address before: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Patentee before: XI'AN JIAOTONG University |
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Denomination of invention: Automatic zoom device for mobile phone lens based on IPMC driver Effective date of registration: 20230321 Granted publication date: 20161228 Pledgee: Zhejiang Nanxun Rural Commercial Bank branch Shuanglin Limited by Share Ltd. Pledgor: HUZHOU ZHONGCHUANG XIAOWEI PIONEER PARK ENTERPRISE MANAGEMENT Co.,Ltd. Registration number: Y2023330000575 |