CN103207499A - Small imaging device - Google Patents
Small imaging device Download PDFInfo
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- CN103207499A CN103207499A CN201310048056XA CN201310048056A CN103207499A CN 103207499 A CN103207499 A CN 103207499A CN 201310048056X A CN201310048056X A CN 201310048056XA CN 201310048056 A CN201310048056 A CN 201310048056A CN 103207499 A CN103207499 A CN 103207499A
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- lens subassembly
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Abstract
The invention relates to an imaging device with small dimensions.
Description
Technical field
Disclosed herely the present invention relates to a undersized imaging device.
Background of invention
Many portable electron devices as mobile phone and/or PDA(Personal Digital Assistant), all comprise a small-sized camera module.This module can comprise that an image inductor, an imaging len assembly and/or an actuator are to be adjusted to the picture lens subassembly about the position of image inductor.When the deviser tended to release thinner, more small-sized and/or lighter portable electron device, small-sized camera module manufacturer was just in the face of such challenge: limited space in need providing more compact camera module deallocation to attach together to put.
Description of drawings
With reference to following description, will unrestricted and non-exhaustive embodiment be described, wherein identical reference code is represented same parts in whole instructions, unless stated otherwise.
Fig. 1 is the assembly decomposing schematic representation of the small-sized image-forming module of one embodiment of the invention;
Fig. 2 is the small-sized image-forming module De Installed of of one embodiment of the invention figure;
Fig. 3 is the synoptic diagram of a spring of one embodiment of the invention;
Fig. 4 is the vertical view of a spring of one embodiment of the invention;
Fig. 5 is the synoptic diagram of a coil of one embodiment of the invention;
Fig. 6 is the vertical view of a coil of one embodiment of the invention;
Fig. 7 is the vertical view of a coil-spring assembly of one embodiment of the invention;
Fig. 8 is the assembly decomposing schematic representation of the small-sized image-forming module of another embodiment of the present invention;
Fig. 9 is the side view of a small-sized image-forming module of one embodiment of the invention;
Figure 10 is the local enlarged diagram of actuator of a startup of one embodiment of the invention;
Figure 11 is the local enlarged diagram of actuator of a non-startup of one embodiment of the invention;
Figure 12 is the side view of a small-sized image-forming module of another embodiment of the present invention;
Figure 13 is the local enlarged diagram of actuator of a startup of one embodiment of the invention;
Figure 14 is the local enlarged diagram of actuator of a non-startup of one embodiment of the invention;
Figure 15 is the assembly decomposing schematic representation of the small-sized image-forming module of one embodiment of the invention;
Figure 16 is the assembly decomposing schematic representation of the small-sized image-forming module of another embodiment of the present invention;
Figure 17 is the assembly decomposing schematic representation of the small-sized image-forming module of another embodiment of the present invention;
Figure 18 is the assembly decomposing schematic representation of the small-sized image-forming module of another embodiment of the present invention.
Detailed Description Of The Invention
In the following detailed description, numerous details have been set forth in order to can intactly understand the present invention.But it will be understood to those of skill in the art that does not need these details can implement the present invention yet.In addition, in order not obscure the present invention, method well-known to those skilled in the art, device or system can not be described in detail.
In instructions, " embodiment " refers to be included in relevant with special embodiment at least one embodiment of the present invention and special feature, structure or the characteristic of description.Therefore, not necessarily refer to arbitrary specific embodiment of same embodiment or description at different local " in embodiment " that occur in the instructions, in addition, will be understood that, in one or more embodiment, can merge described special feature, structure or characteristic with the whole bag of tricks.Usually, certainly, such or such problem may be along with the contextual difference of specific use difference.So the use of contextual specific descriptions and these terms can help to understand relevant inference of amplifying out from context.
Equally, as used herein " with ", " and/or " and " or " can comprise numerous connotations, its same at least part of context that uses these terms that depends on.Usually, if " or " with " and/or " be used to a related tabulation, as A, B or C, it can be to comprise meaning, is intended to refer to A, B and C, can be exclusive connotation also, refers to A, B or C.In addition, " one or more " can be used to describe any single feature, structure or characteristic as used herein, maybe can be used to describe some combinations of feature, structure or characteristic.Only be one and describe example although should be noted that this, and the claim theme is not limited to this example.
Embodiment described here comprises a small-sized image-forming module, it provides a device and/or allows a procedure to be adjusted at distance between imaging len and the image inductor, and wherein the overlay area of small modules (footprint) can be almost identical with the overlay area of image inductor.In other words, small-sized image-forming module overlooks the area of overlooking that area approached or be less than image inductor.Small-sized image-forming module like this can provide some advantages for devisers: module integratedly go in slim, the small-sized and/or light further electronic installation such, for example compact camera.
When being used to describe these embodiment, term " ... on ", " ... down " and the position of the optical axis of " in ... side " this relatively small-sized image-forming module of description.Especially, " ... on " and " ... down " refer to the position along optical axis, wherein " ... on " refer to a side of an element, and " ... be the opposite side of finger element down ".Relatively " ... on " and " ... down ", " in ... side " refers to the side of an element, it departs from optical axis, as the periphery of lens.
In a special embodiment, this overlay area (footprint) can by settle an actuator above the lens subassembly and/or below realize, rather than settle an actuator by the side of lens subassembly.For example, in a special embodiment, the structure of a small-sized image-forming module as small-sized camera module, can provide automatic focusing and/or other imaging function, and wherein actuator is installed in top and/or the below of imaging len.This actuator overlook area approach or be less than this small-sized camera module image inductor overlook area.Comparatively speaking, for example, place a side of imaging len will cause a relatively large image-forming module size actuator of small-sized camera module.The overlay area that this bigger apparent size can make small-sized camera module is obviously greater than the areal coverage of its image inductor.In an enforcement, this actuator can comprise magnet and coil and give magnetic force on lens subassembly.This magnet can be smooth or flat shape, as the shape of plane disc.Magnet can be permanent magnet or electromagnetic field generator, as coil.This coil can be the plating coil on wound coil, printed coil and/or the substrate.Small-sized image-forming module can comprise a spring and provide restoring force to lens subassembly.
In other embodiment, small-sized image-forming module can comprise an actuator, and it has a coil, and is mobile with lens subassembly when coil is recharged.In another structure, small-sized image-forming module can comprise an actuator, and it has a coil and a magnet, and wherein magnet can be mobile with lens subassembly when coil is recharged.
In special an enforcement, this actuator can comprise four magnet, and it can be placed in one plane.In another special enforcement, this actuator can comprise four coils, and it can be placed in one plane.The electrical connection of these four coils is series connection, or at least wherein the electrical connection of two coils is in parallel.In another special enforcement, these four coils can be positioned on the lens subassembly of small-sized image-forming module.
In another embodiment, small-sized image-forming module can comprise an actuator, and it comprises at least two group coils to produce electromagnetic force, and wherein every group of coil is positioned on two parallel planes.In special an enforcement, the pole orientation that can arrange these two groups of coils is the optical axis that is parallel to small-sized image-forming module lens subassembly.In another special enforcement, when two groups of coils were recharged, wherein one group of coil can be mobile with lens subassembly.Certainly, these details of small-sized image-forming module only are examples, and claim theme of the present invention is not so limited.
In an embodiment, the lens subassembly that will comprise one or more lens is installed to the part of actuator and settles image inductor to accept the light from lens subassembly, and obtain a small-sized image-forming module, wherein actuator can comprise a flat spring (leaf spring), and it is between image inductor and lens subassembly.In an enforcement, this small-sized image-forming module can comprise a lens subassembly, at least one actuator to adjust position and an image inductor of lens subassembly, and wherein at least a portion actuator can be positioned between lens subassembly and the image inductor.For example, actuator can comprise a flat spring, and it is positioned between lens subassembly and the image inductor.In special an enforcement, this actuator can comprise a magnet and a coil, and they also are positioned between lens subassembly and the image inductor.For example, this actuator can be installed on the image inductor and/or lens subassembly can be installed on the actuator.In another special enforcement, this actuator can comprise a magnet and a coil, and it is positioned in the top of lens subassembly, and flat spring is positioned in the below of lens subassembly.In any was implemented, this actuator can longitudinally drive lens subassembly and adjust the position of the relative image inductor of lens subassembly.As used herein, " longitudinally " refers to a direction that almost is parallel to small-sized image-forming module optical axis, and " laterally " refers to an almost direction vertical with small-sized image-forming module optical axis.Certainly, these details of small-sized image-forming module only are examples, and claim theme of the present invention is not so limited.
Actuator can be controlled the motion of lens subassembly more accurately, thereby various imaging function such as focusing, can improve picture quality.The advantage of this small modules be its overlay area can no better than or less than the overlay area of image inductor.In addition, this small modules that comprises an actuator that suitably designs goes for manufacture process in batches.And batch process can occur on the wafer scale process.This process can produce a higher relatively manufacturing efficient, because small modules provides zoom function, thereby reduces the manufacturing cost of camera.
Fig. 1 is the assembly decomposing schematic representation of a small-sized image-forming module of one embodiment of the invention.This image-forming module comprises an image inductor 110, and it has ball grid array interface 115(ball grid array interface), although this image-forming module can comprise many dissimilar electrical connections.Image inductor 110 can comprise an effective imaging region 117, and it comprises that this only is two examples such as a pixel charge-coupled device (CCD) and/or one or more complementary metal oxide semiconductor (CMOS) (CMOS) device.
In an embodiment, image-forming module 100 also comprises a lens subassembly 160, and it can comprise one or more lens and provide an image to effective imaging region 117 of image inductor 110.This image not only can comprise visible wavelengths, also can comprise infrared ray and/or ultraviolet wavelength.Thereby this image is focused onto on effective imaging region 117, and actuator 135 can be adjusted the position of lens subassembly 160 relative image inductors 110.In special an enforcement, actuator 135 can be adjusted the lengthwise position of at least a portion lens subassembly 160 relative image inductors 110.As mentioned above, this lens subassembly can comprise one or more lens, adjusts thereby the lengthwise position of one or more lens can be used as one group.In special an enforcement, actuator 135 can comprise a magnet 130, a flat spring 140 and/or a coil 150.Image-forming module 100 can also comprise that places the pad 120 between actuator 135 and the image inductor 110.All be positioned in below the lens subassembly 160 although be described to its all elements at actuator in the present embodiment 135, in another embodiment, as the following detailed description, the element of actuator can be positioned in top and/or the below of lens subassembly.
Fig. 2 is the small-sized image-forming module 200 De Installed figures of of one embodiment of the invention, and this module can comprise small-sized image-forming module 100 shown in Figure 1.For example, small-sized image-forming module 200 can comprise that a shell 220 is to cover the element of small-sized image-forming module 100.This shell can be installed on the image inductor 110, and it can comprise ball grid array 210, thereby is electrically connected between small-sized image-forming module 200 and one or more system element (not shown) such as control circuit etc.
Fig. 3 is the synoptic diagram of the spring 300 of one embodiment of the invention, and Fig. 4 is the vertical view of spring 300.This spring can be a flat spring, flat spring 140 as shown in Figure 1.In an enforcement, spring 300 can comprise a middle body 330 and an arm portion 320, and is mobile or crooked adaptively as a spring.For example, if during middle body 330 and arm portion 320 skew equilibrium positions, middle body 330 and arm portion 320 just can provide a restoring force.Fixed part 310 can comprise the periphery of spring 300, and it is fixedly installed on one or more elements of small-sized image-forming module.For example, middle body 330 can be crooked as spring with arm portion 320, and fixed part 310 then remains on a relatively-stationary position.Spring 300 can also comprise a hole 340, passes spring 300 to allow light along optical axis.Certainly, these details of spring 300 only are examples, and the present invention is not so limited.
Fig. 5 is the synoptic diagram of the coil 500 of one embodiment of the invention, and Fig. 6 is the vertical view of coil 500.This coil can comprise coil shown in Figure 1 150.In an enforcement, lens subassembly, lens subassembly 160 as shown in Figure 1 can be installed on the coil 500, and coil 500 comprises the electric conductor 520 that is installed on the substrate 510.Electric conductor 520 can be a plurality of wire loops on one or more layers of substrate 510.The electric current of electric conductor annulus 520 of flowing through can produce a magnetic field, and produces an acting force on magnet, magnet 130 as shown in Figure 1.In the case, spring 140 can provide a restoring force to offset this magnetic force, provides a mechanism to adjust lens subassembly 160 about the lengthwise position of image inductor 110 thus.Coil 500 can also comprise a hole 530, passes coil 500 to allow light along optical axis.Certainly, these details of coil 500 only are examples, and the present invention is not so limited.
In an embodiment, spring and coil can be merged into an element, and Fig. 7 is the vertical view of this coil-spring element 700 examples.This spring section that merges element can provide current to coiler part.For example, this merges element can comprise a coil 710 and an electrode 720, and its spring element also can be a flat spring, with from external power source (not shown) conduction current to coil 710. Part 730 and 740 shows join domain, and wherein electric current can be transmitted to coil 710 from electric conductor 720, and vice versa.
Fig. 8 is the assembly decomposing schematic representation of a small-sized image-forming module 800 that comprises coil-spring element 700 of one embodiment of the invention.This image-forming module can comprise an image inductor 810, and it can be similar to image inductor shown in Figure 1 110.Image-forming module 800 can also comprise a lens subassembly 860, and it can comprise that one or more lens units are to provide image (not shown) to effective imaging region of image inductor 810.This image not only can comprise visible wavelengths, also can comprise infrared ray and/or ultraviolet wavelength.Thereby this image is focused onto on the image inductor 810, and actuator 835 can be adjusted lens subassembly 860 about the lengthwise position of image inductor 810.Describe in another way, the distance that actuator 835 can be adjusted between lens subassembly 860 and the image inductor 810 is adjusted focal length.This lens subassembly can comprise one or more lens, thereby the lengthwise position of one or more this lens can be adjusted.In special an enforcement, actuator 835 can comprise magnet 830, spring-electric conductor 840 and/or coil 850.As mentioned above, spring-electric conductor 840 and coil 850 can be discrete components, coil-spring element 700 as shown in Figure 7.In this discrete component, spring-electric conductor 840 can provide current to coil 850.Image-forming module 800 can also comprise that places the pad 820 between actuator 835 and the image inductor 810.Coil 850 is arranged to lens subassembly 860.If energising, the magnetic field that is produced by the electric current of flowing through coil 850 and the magnet 830 that is placed under the coil 850 interact, and can provide an acting force that lens subassembly 860 and coil 850 are moved along optical axis.In another structure, magnet 830 can be positioned in coil 850 tops.Certainly, these details of small-sized image-forming module only are examples, and the present invention is not so limited.
Fig. 9 is the side view of a small-sized image-forming module 900 of one embodiment of the invention.This image-forming module can comprise an image inductor 910, and it can be similar to image inductor shown in Figure 1 110.Image-forming module 900 can also comprise a lens subassembly 960, and it can comprise that one or more lens units 970 are to provide the effective imaging region (not shown) of an image to image inductor 910.As mentioned above, this image not only can comprise visible wavelengths, also can comprise infrared ray and/or ultraviolet wavelength.Thereby this image is focused onto on the image inductor 910, and actuator can be adjusted lens subassembly 960 about the position of image inductor 910.This orientation is shown in arrow 980.This actuator is positioned under the lens subassembly 960, can comprise magnet 930, flat spring 940 and coil 950.This lens subassembly can comprise one or more lens, and as the following detailed description, thereby the lengthwise position of one or more lens can be adjusted.In special an enforcement, small-sized image-forming module 900 also comprises a pad 920 that is placed between magnet 930 and the image inductor 910.Image inductor 910 can comprise ball grid array 912, in order to can be electrically connected to one or more outer member (not shown).
In Figure 11, when not having electric current through coil 950, this actuator does not start.Do not have electric current, just do not have magnetic field to produce the repulsive force of relative magnet 930.So, be installed in lens subassembly 960 on the coil 950 and still keep a distance between lens subassembly 960 and the image inductor 910 near magnet 930.This example is only limited to actuator startup or that do not start.Perhaps, at least part of electric current amplitude of variation based on 95 li of coils, the startup degree of actuator also changes.Different startup degree changes the distance that can change between lens subassembly 960 and the image inductor 910, thereby controls the focusing of light to the image inductor 910 exactly.For example, the distance between lens subassembly 960 and the image inductor 910 can depend on magnetic field at least in part, wherein can measure this distance along the optical axis of lens subassembly.Certainly, these details of small-sized image-forming module only are examples, and the present invention is not so limited.
Figure 12 is the side view of the small-sized image-forming module 905 of one embodiment of the invention.This image-forming module can comprise an image inductor 915, and it can be similar to image inductor shown in Figure 9 910.Image-forming module 905 can also comprise a lens subassembly 965, and it can comprise one or more lens units 975 and the effective imaging region (not shown) of image to image inductor 915 is provided.In special an enforcement, lens subassembly 965 can comprise at least one lens 977, the lens subassembly 965 extensible positions that exceed any actuator component such as magnet 935 and coil 955.Magnet 935 can be supported by a magnet support unit 936.Thereby this image is focused onto on the image inductor 915, and actuator can be adjusted lens subassembly 965 about the position of image inductor 915.The orientation is by arrow 985 expressions.This a part of actuator that is placed under the lens subassembly 965 can comprise a flat spring 945, and another part actuator that is placed at least a portion lens subassembly 965 can comprise magnet 935 and coil 955.Lens subassembly can comprise one or more lens, and the lengthwise position of one or more lens can be adjusted as one group by actuator.In special an enforcement, small-sized image-forming module 905 can also comprise a pad 925, and it is positioned between flat spring 945 and the image inductor 915.Image inductor 915 can comprise ball grid array 914, in order to can be electrically connected to one or more outer member (not shown).
Figure 15 is the assembly decomposing schematic representation of a small-sized image-forming module 170 of one embodiment of the invention.Coil component 171 can comprise a plurality of unicoils 172.In special an enforcement, coil component 171 can comprise four coils 172, and they can be installed on the single flat board, and the electrical connection of four coils 172 can be that the electrical connection of series connection or at least two coils is in parallel.Small-sized image-forming module 170 also can comprise a plurality of single magnet 174.For example, small-sized image-forming module 170 can comprise four magnet, and they are corresponding four coils 172 one to one, although the present invention is not so limited.
Figure 16 is the assembly decomposing schematic representation of a small-sized image-forming module 175 of another embodiment of the present invention.Magnet 177 is placed between spring assembly 178 and the lens subassembly 176.In addition, one or more coils 179 are positioned between spring assembly 178 and the image inductor 173.For example, this configuration can be compared with embodiment shown in Figure 1.Magnet 177 can be arranged on the lens subassembly 176.When energising, by the magnetic field and magnet 177 interactions that the electric current of the coil 179 of magnet 177 belows of flowing through produces, can produce an acting force lens subassembly 176 and magnet 177 are moved along optical axis.In another structure, coil 179 can be placed in magnet 177 tops, although the present invention is not so limited.
Figure 17 is the assembly decomposing schematic representation of a small-sized image-forming module 180 of another embodiment of the present invention.One or more coils 184 can be mounted and/or directly overlay on the lens subassembly surface 182, although the present invention is not so limited.
Figure 18 is the assembly decomposing schematic representation of a small-sized image-forming module 185 of another embodiment of the present invention.This module can comprise coil 187 and/or replace the coil 189 of magnet that they can be included in other above-mentioned embodiment.
It will be recognized by those skilled in the art that it is possible that numerous variations is made in above description, example and accompanying drawing only are as describing one or more special enforcements.
Although described example embodiment, it will be understood to those of skill in the art that and to make various other modifications and equivalent replacement to it, and can not depart from the scope of the present invention.In addition, can make many modifications and adapt to religious doctrine of the present invention to modulate a particular case, and not break away from central concept described herein.So the present invention is not limited by special embodiment disclosed here, but the present invention also may comprise all embodiment and the equivalent thereof that belongs in the claims scope.
Claims (11)
1. small-sized imaging device comprises:
A lens subassembly, it comprises one or more lens;
An image inductor receives light from described lens subassembly; With
An actuator, be used for adjusting the position of described lens subassembly, described actuator comprises that at least one magnet and at least one coil produce electromagnetic force, wherein the described actuator of at least a portion is positioned between described lens subassembly and the described image inductor, wherein said actuator is installed on the top surface of described image inductor, wherein said actuator overlook the area of overlooking that area approached or be less than described image inductor, wherein magnet and coil lay respectively on two parallel planes, two parallel planes are perpendicular to the optical axis of described lens subassembly, and the pole orientation of magnet makes magnet and coil move along optical axis direction.
2. device according to claim 1, wherein said device comprises at least one spring.
3. device according to claim 1, wherein when described coil was energized, described coil can move with described lens subassembly.
4. device according to claim 1, wherein when described coil was energized, described magnet can move with described lens subassembly.
5. device according to claim 1, wherein the pole orientation of magnet is perpendicular or parallel in the optical axis of described lens subassembly.
6. the method for making of a small-sized imaging device comprises:
A lens subassembly that comprises one or more lens is installed to a part of actuator, actuator comprises that at least one magnet and at least one coil are to produce electromagnetic force;
Fix an image inductor to receive light from described lens subassembly; With
Described actuator is installed on the top surface of described image inductor, wherein said actuator overlook the area of overlooking that area approached or be less than described image inductor, wherein magnet and coil lay respectively on two parallel planes, two parallel planes are perpendicular to the optical axis of described lens subassembly, and the pole orientation of magnet makes magnet and coil move along optical axis direction.
7. method according to claim 6 also comprises: at least one spring is installed on described image inductor.
8. method according to claim 6 also comprises: at least one spring is installed on described lens subassembly.
9. method according to claim 6 also comprises: settle described coil to described lens subassembly.
10. method according to claim 6, wherein when described coil electricity, described coil can move with described lens subassembly.
11. method according to claim 6, wherein the pole orientation of magnet is perpendicular or parallel in the optical axis of described lens subassembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048056.XA CN103207499B (en) | 2009-07-31 | 2009-07-31 | Compact imaging device and preparation method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009800000846A CN102124390B (en) | 2009-07-31 | 2009-07-31 | Compact imaging device and preparation method thereof |
| CN201310048056.XA CN103207499B (en) | 2009-07-31 | 2009-07-31 | Compact imaging device and preparation method thereof |
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| CN2009800000846A Division CN102124390B (en) | 2009-07-31 | 2009-07-31 | Compact imaging device and preparation method thereof |
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| CN103207499A true CN103207499A (en) | 2013-07-17 |
| CN103207499B CN103207499B (en) | 2015-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802459A (en) * | 2016-09-12 | 2017-06-06 | 台睿精工股份有限公司 | Single-lens mechanical zero-inclination-angle structure and adjusting method thereof |
| CN107561825A (en) * | 2016-07-01 | 2018-01-09 | 台湾东电化股份有限公司 | Lens driving mechanism |
| US10983302B2 (en) | 2016-07-01 | 2021-04-20 | Tdk Taiwan Corp. | Lens driving mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0702835D0 (en) * | 2007-02-14 | 2007-03-28 | Johnson Electric Sa | Lens module |
| US7725014B2 (en) * | 2007-08-29 | 2010-05-25 | Hong Kong Applied Science and Technology Research Institute Company Limited | Actuator for linear motion and tilting motion |
| CN201273955Y (en) * | 2008-08-25 | 2009-07-15 | 金龙控股集团有限公司 | Lens driving apparatus |
-
2009
- 2009-07-31 CN CN201310048056.XA patent/CN103207499B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561825A (en) * | 2016-07-01 | 2018-01-09 | 台湾东电化股份有限公司 | Lens driving mechanism |
| CN107561825B (en) * | 2016-07-01 | 2021-01-19 | 台湾东电化股份有限公司 | Lens driving mechanism |
| US10983302B2 (en) | 2016-07-01 | 2021-04-20 | Tdk Taiwan Corp. | Lens driving mechanism |
| CN106802459A (en) * | 2016-09-12 | 2017-06-06 | 台睿精工股份有限公司 | Single-lens mechanical zero-inclination-angle structure and adjusting method thereof |
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| CN103207499B (en) | 2015-10-28 |
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