CN109656009A - A kind of focus control, optical system and method - Google Patents
A kind of focus control, optical system and method Download PDFInfo
- Publication number
- CN109656009A CN109656009A CN201910052383.XA CN201910052383A CN109656009A CN 109656009 A CN109656009 A CN 109656009A CN 201910052383 A CN201910052383 A CN 201910052383A CN 109656009 A CN109656009 A CN 109656009A
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- cmos
- image
- focus control
- focusing
- micro slide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
- G02B21/241—Devices for focusing
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/34—Microscope slides, e.g. mounting specimens on microscope slides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/361—Optical details, e.g. image relay to the camera or image sensor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/365—Control or image processing arrangements for digital or video microscopes
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a kind of focus control and method, the focus control realizes the focusing mobile to image-forming assembly by translation stage component, and focusing accuracy is high, the difficulty of machining cam curve when avoiding cam focusing mechanism.In addition, focus control of the invention realizes reduction resetting difficulty, compact-sized degree is improved；Error of backlash of the mechanical structured member repeatedly in motion process is avoided, repeatable accuracy is within ± 2um.
Description
Technical field
The present invention relates to technical field of optical more particularly to a kind of focus controls, optical system and method.
Background technique
It is repeatedly distributed imaging by hundred millimeters of long face battle arrays and realizes hundred millimeters of micro slide imagings of bidimensional, not due to micro slide thickness
Factors, the focal plane such as positioning, temperature change can generate different degrees of defocus after same, quick movement, cause image fuzzy.Strong
In LED illumination, it is finely adjusted before need to being imaged every time and the defocus direction for keeping micro slide platform in imaging is stablized.
There are mainly three types of modes, respectively camera lens movable type, focal plane movable reflecting mirror and image planes to move for focus adjusting mechanism at present
Dynamic formula.Camera lens movable type is generally divided into camera lens overall movement, preceding group of mobile, middle group of movement and rear group and moves.Common focusing machine
The structure type of structure includes: the kind of drive of one, cylindrical cam curved groove, and guiding parts generally uses linear guide.Two, partially
Cardiac prominence wheel and turbine and worm auxiliary driving mode, guiding parts generally use linear guide.Three, the transmission side of screw pair
Formula, guiding parts are linear steering axis.The shortcomings that these types of focusing mode is that structure is complicated, volume is big, single-arc equal error essence
Degree is high, and clamping stagnation is easy in motion process, has error of backlash during screw nut driven, and precision is lower, and existing these types is adjusted
Burnt mode can not meet that large format focusing range is big, precision is high, focal plane stability is good simultaneously and compact-sized etc. require.
In view of the foregoing, it is necessary to propose a kind of to be able to solve the problem that existing focusing structure is complicated, focusing accuracy is low
Focus control.
Summary of the invention
The main purpose of the present invention is to provide a kind of focus controls, it is intended to solve the focusing accuracy of existing focus adjusting mechanism
It is low, the problems such as structure is complicated, transmission backlash error.
To achieve the above object, a kind of focus control provided by the invention, the focus control include:
Image-forming assembly, the image-forming assembly include mirror assembly, imaging suite body and for installing the reflection microscope group
The installation frame of part and the imaging suite body；
Connection frame connects the side of the installation frame of the image-forming assembly；
Translation stage component is connect by the connection frame with the image-forming assembly, for receiving focusing control signal
It realizes afterwards and drives the image-forming assembly mobile to find position of focal plane.
Preferably, the quantity at least two of the reflecting mirror, at least two reflecting mirrors are mounted on described anti-side by side
It penetrates on microscope base.
Preferably, the quantity of the reflecting mirror is 5.
Preferably, the translation stage component includes driving mechanism and the mounting platform for installing the connection frame, described
Driving mechanism is connect with the mounting platform, for driving the mounting platform to transport along the guide rail extending direction of translation stage component
It is dynamic.
Preferably, the imaging suite body includes Cmos, the Cmos mounting rack for installing the Cmos, the Cmos peace
In the Cmos mounting rack.
Preferably, the Cmos assembly further includes Cmos adjusting pad, and the Cmos adjusting pad is mounted under the Cmos
Side.
In addition, to achieve the above object, the present invention also proposes a kind of optical system, the optical system include carrying at
As the micro slide of article, be carved on the micro slide focusing test label, the focusing test label for focusing when as target to be imaged
Object records the position of focusing test label to focus to the image definition by detecting focusing test label.
Preferably, the focusing test arranges on the micro slide according to default recurring rule labeled as multiple rows of setting arranged side by side
Line segment combination.
Preferably, the optical system further includes the micro slide platform for placing micro slide, the micro slide platform table
Face has multiple grooves for being used to improve rate of heat dissipation, and multiple channel abreasts are arranged in the slide surface.
Preferably, the translation stage component includes driving mechanism and the mounting platform for installing the connection frame, described
Driving mechanism is connect with the mounting platform, for driving the mounting platform to transport along the guide rail extending direction of translation stage component
It is dynamic.
In addition, to achieve the above object, the present invention also proposes that a kind of focus adjustment method, the focus adjustment method are applied to institute as above
In the focus control stated, the focus adjustment method includes the following steps:
Focus control is installed according to preset requirement；
It is powered to the focus control after installation；
The upper focusing test label of micro slide is imaged；
According to the image information of receiving, the height of Cmos adjusting pad is adjusted, and finely tunes mirror assembly, image clearly
Afterwards, it fastens installation part and positions Cmos component and mirror assembly with locating piece, it is made to be spliced into large format, high-resolution clear
Clear image；
Imaging algorithm must be preset according to image according to the clarity of the focusing test of receiving label imaging calculate focussing signals；
The movement of translation stage Component driver Cmos component is controlled according to the focussing signals, realizes that focal plane is adjusted to adjust focal plane
Clarity and stability.
Preferably, the installation temperature control of the micro slide in the focus control is assembled under 20 DEG C of ± 1 DEG C of environment.
Focus control of the present invention includes:
Image-forming assembly, the image-forming assembly include mirror assembly, imaging suite body and for installing the reflection microscope group
The installation frame of part and the imaging suite body；
Connection frame connects the side of the installation frame of the image-forming assembly；
Translation stage component is connect by the connection frame with the image-forming assembly, for receiving focusing control signal
It realizes afterwards and drives the image-forming assembly mobile to find position of focal plane.
Using focus control of the invention, the focusing mobile to image-forming assembly, focusing essence are realized by translation stage component
Degree is high, the difficulty of machining cam curve when avoiding cam focusing mechanism.In addition, focus control of the invention, which realizes, reduces adjustment hardly possible
Degree, improves compact-sized degree；Error of backlash of the mechanical structured member repeatedly in motion process is avoided, repeatable accuracy is in ± 2um
Within.
Detailed description of the invention
Attached drawing is as a part of the invention, and for providing further understanding of the invention, of the invention is schematic
Examples and descriptions thereof are used to explain the present invention, but does not constitute an undue limitation on the present invention.Obviously, the accompanying drawings in the following description
Only some embodiments to those skilled in the art without creative efforts, can be with
Other accompanying drawings can also be obtained according to these attached drawings.In the accompanying drawings:
Fig. 1 is focus control overall structure perspective view of the present invention；
Fig. 2 is 1 perspective view of focus control Cmos component of the present invention；
Fig. 3 is 1 side view of focus control Cmos component of the present invention；
Fig. 4 is 2 perspective view of focus control connection frame of the present invention；
Fig. 5 is 3 perspective view of focus control translation stage component of the present invention；
Fig. 6 is 4 perspective view of micro slide that focus control of the present invention is marked with focusing test；
Fig. 7 is 5 perspective view of focus control micro slide platform of the present invention；
In figure:
100, focus control；1, Cmos component；1-1, wiring board；1-2,Cmos；1-3, Cmos mounting rack；1-4, Cmos tune
Whole pad；1-5, reflecting mirror；1-6, mirror unit；1-7, installation frame；1-8, fastening screw；1-9, shop bolt；1-10, pressure
Plate；2, connection frame；3, translation stage component, 3-1, motor；3-2, grating magnetic stripe；3-3, grating reading head；3-4, mounting platform；4,
Micro slide；4-1, focusing test label；5, micro slide platform；5-1, groove.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
The technical issues of with reference to the accompanying drawing and specific embodiment is solved to the embodiment of the present invention, used technical side
Case and the technical effect of realization carry out clear, complete description.Obviously, described embodiment is only one of the application
Divide embodiment, is not whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not paying creation
Property labour under the premise of, all other equivalent or obvious variant embodiment obtained all falls within protection scope of the present invention
It is interior.The embodiment of the present invention can be embodied according to the multitude of different ways being defined and covered by claim.
It should be noted that in the following description, understanding for convenience, giving many details.But it is very bright
Aobvious, realization of the invention can be without these details.
It should be noted that in the absence of clear limitations or conflicts, each embodiment in the present invention and its
In technical characteristic can be combined with each other and form technical solution.
The invention proposes a kind of focus controls, it is intended to which the focusing accuracy for solving existing focus adjusting mechanism is low, and structure is complicated, passes
The problems such as dynamic error of backlash.
Referring to Fig.1~Fig. 7, focus control 100 of the invention include:
Image-forming assembly, the image-forming assembly include reflecting mirror 1-5 component, imaging suite body and for installing the reflecting mirror
The installation frame of 1-5 component and the imaging suite body；
Connection frame 2 connects the side of the installation frame of the image-forming assembly；
Translation stage component 3 is connect by the connection frame 2 with imaging component, for receiving focusing control signal
It realizes afterwards and drives the image-forming assembly mobile to find position of focal plane.
In embodiments of the present invention, referring to Fig.1, the focus control is in optical system.The connection frame 2 is as company
The intermediate connection structure for connecing the image-forming assembly and the translation stage component 3 is connected to the image-forming assembly and the translation stage group
Between part 3.The connection frame 2 is " π " font structure, and one end of " π " font connection frame 2 is fixed on the translation by fastener
On platform component 3, the structure of similar two stabilizer blades of " π " font connection frame 2 is fixed on the image-forming assembly by fastener.Specifically
Motion process be that its focusing test mechanism of entire optical system is detected, and feeds back to controller according to the result of detection, control
Device needs the displacement moved according to translation stage component 3 at the interpretation of result of detection, and issues control signal to translation stage component 3,
For translation stage component 3 after receiving the control signal, response instruction drives coupled connection frame 2 and image-forming assembly along pre-
If direction movement, with complete focusing processing, make focal plane keep stablize.It is understood that translation stage component 3 is retouched in above-mentioned
State lower includes the associated component that can receive control signal naturally, is not repeated herein.
Using focus control of the invention, the focusing mobile to image-forming assembly, focusing essence are realized by translation stage component 3
Degree is high, the difficulty of machining cam curve when avoiding cam focusing mechanism.In addition, focus control of the invention, which realizes, reduces adjustment hardly possible
Degree, improves compact-sized degree；Error of backlash of the mechanical structured member repeatedly in motion process is avoided, focusing range is ± 5mm,
Repeatable accuracy is within ± 2um.
The image-forming assembly can be CCD photosensory assembly or Cmos image-forming assembly, preferably Cmos imaging in the present embodiment
Component.
In the above-described embodiments, referring to fig. 2, the imaging suite body is Cmos assembly, and the Cmos assembly includes
Cmos1-2, the Cmos mounting rack 1-3 for installing the Cmos1-2, the Cmos are mounted in the Cmos mounting rack 1-3.
Wherein, the Cmos body guarantees its straightness within 0.002mm.Specifically, Cmos is mounted in Cmos mounting rack 1-3,
With D04 glue sealing, Cmos and Cmos mounting rack 1-3 is combined into one.Cmos assembly is mounted on installation frame 1-7, institute
Have screw preload, later the surface mount road plate 1-1 on Cmos, installation Cmos assembly guarantee its straightness 0.002mm with
It is interior.10 cmos are set altogether in focus control of the invention.
On this basis, the Cmos assembly further includes Cmos adjusting pad 1-4, and the Cmos adjusting pad 1-4 is mounted on
Below the Cmos.According to the image information of receiving after energization, the height of Cmos adjusting pad 1-41-4, image clearly are adjusted
Afterwards, fastening screw 1-8 and Cmos component 11 and reflecting mirror 1-5 component are positioned with pin, is spliced into large format, high-resolution clear
Clear image.
Further, referring to Fig. 2 and Fig. 3, the reflecting mirror 1-5 component includes reflecting mirror 1-5 and described anti-for installing
Penetrate the mirror unit 1-6 of mirror 1-5.During installation, reflecting mirror 1-5 is mounted on mirror unit 1-6, is used after adjusting
Pressing plate 1-10 is fixed, and is then carrying out sealing with D04 glue, reflecting mirror 1-5 and mirror unit 1-6 are combined into one, i.e. reflecting mirror
1-5 component.Wherein, it should be noted that the structure of mirror unit 1-6 is the structure with inclination mounting surface, should referring to Fig. 3
For mirror unit 1-6 for installing being obliquely installed on one side for the reflecting mirror 1-5, mirror unit 1-6 is fixed on peace by fastener
It frames up on frame 1-7.
In another preferred embodiment, the quantity at least two of the reflecting mirror 1-5, at least two reflecting mirror 1-5
It is mounted on the mirror unit 1-6 side by side.It is installed by splicing multiple reflecting mirror 1-5, obtains large format, high-precision
Clear image, after adjusting image planes and the position reflecting mirror 1-5 with high-precision joining instrument, screw fastening is justified with using after D04 glue sealing
Taper pin nail positioning.Preferably, the quantity of the reflecting mirror 1-5 is 5.5 reflecting mirror 1-5 are selected, are guaranteeing to obtain large format
On the basis of high-precision clear image, reduce the structural burden to system, guarantees installation accuracy.It should be noted that this
Furthermore corresponding 5 Cmos of 5 reflecting mirrors in embodiment further include 5 Cmos in other side, 10 Cmos are arranged altogether and splice
At the image planes of 150mmX20mm.
In another embodiment, referring to Fig. 6, the optical system which is applicable in includes carrying article to be imaged
Micro slide 4, focusing test label 4-1 is carved on the micro slide 4, which marks 4-1 to be used in focusing as target to be imaged
Object records the position of focusing test label 4-1 to mark the image definition of 4-1 to focus to by detecting the focusing test.It is carrying
Focusing test is set on object piece 4 and marks 4-1, for, as target imaging object, assisting to complete focusing with detection during focusing.It needs
It is noted that focusing test label 4-1 can be and portray on the micro slide 4, it is also possible to be sticked on the micro slide 4,
Certainly it can also be and be covered on the micro slide 4 in other manners.
In addition, focusing test label 4-1 be it is multiple rows of it is arranged side by side be arranged on the micro slide 4 according to default recurring rule
The line segment of arrangement combines.
Further, the optical system further includes the micro slide platform 5 for placing micro slide 4, and the micro slide is flat
5 surface of platform has multiple groove 5-1 for being used to improve rate of heat dissipation, and multiple groove 5-1 laid out in parallel are in 4 table of micro slide
Face.
In another embodiment, the translation stage component 3 includes driving mechanism and the installation for installing the connection frame 2
Platform 3-4, the driving mechanism are connect with the mounting platform 3-4, for driving the mounting platform 3-4 along translation stage component
3 guide rail extending direction movement.The driving mechanism in the present embodiment is driving motor 3-1.
In addition, the translation stage component 3 further includes grating magnetic stripe 3-2 and grating reading head 3-3, the grating magnetic stripe 3-2
It is mounted on the one side of the mounting platform 3-4, the grating reading head 3-3 is mounted on the outside of the grating magnetic stripe 3-2.It is logical
The cooperation for crossing the grating magnetic stripe 3-2 and the grating reading head 3-3 provides the displacement of the movement of translation stage component 3.And it should
Data feedback is to associated component.
In addition, the focus adjustment method is applied to focus control as described above the invention also provides a kind of focus adjustment method
In, the focus adjustment method includes the following steps:
Step 10, focus control is installed according to preset requirement according to presetting method；
Specific mounting means are as follows:
5 reflecting mirror 1-5 are mounted on mirror unit 1-6, are fixed after adjusting with pressing plate 1-10, then with D04
Glue carries out sealing, and reflecting mirror 1-5 and mirror unit 1-6 are combined into one, i.e. reflecting mirror 1-5 component.
Reflecting mirror 1-5 component is mounted on installation frame 1-7, screw pre-tightens.
Cmos is mounted in Cmos mounting rack 1-3, with D04 glue sealing, Cmos and Cmos mounting rack 1-3 are combined into one
Body.Cmos assembly is mounted on installation frame 1-7, all screws pre-tighten, later the surface mount road plate 1-1 on Cmos,
Installation Cmos assembly guarantees its straightness within 0.002mm.
Connection frame 2 is mounted on the mounting platform 3-4 of translation stage component 3, Cmos component 11 is then passed through into fixing piece
It is mounted on connection frame 2.
Step 20, it is powered to the focus control after installation；
Step 30, the upper focusing test label 4-1 of micro slide 4 is imaged；
Step 40, according to the image information of receiving, the height of Cmos adjusting pad 1-4 is adjusted, and finely tunes reflecting mirror 1-5
Component, after image clearly, fastening installation part simultaneously with shop bolt 1-9 positioning Cmos component 11 and reflecting mirror 1-5 component, makes its spelling
It is connected into large format, high-resolution clear image；
Step 50, the image for obtaining the clarity for marking 4-1 to be imaged according to the focusing test of receiving is preset imaging algorithm and is calculated
Focussing signals；
Step 60, controlling translation stage component 3 according to the focussing signals drives Cmos component 11 mobile, realize focal plane adjust with
Adjust the clarity and stability of focal plane.
It should be noted that the installation temperature of micro slide 4 in the focus control control under 20 DEG C of ± 1 DEG C of environment into
Luggage is matched.Influence of the temperature change to 4 surface figure accuracy of micro slide is prevented, to guarantee that focal plane is stablized.
The present invention is suitable for compact-sized high-precision focus technique, by marking the micro slide 4 of 4-1 to focus with focusing test
Afterwards, do not have to repeat to focus under identical environment, structure is simple, and adjustment is convenient.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of focus control, which is characterized in that the focus control includes:
Image-forming assembly, the image-forming assembly include mirror assembly, imaging suite body and for install the mirror assembly and
The installation frame of the imaging suite body；
Connection frame connects the side of the installation frame of the image-forming assembly；
Translation stage component is connect by the connection frame with the image-forming assembly, for the band after receiving focusing control signal
It is mobile to find position of focal plane to move the image-forming assembly.
2. focus control according to claim 1, which is characterized in that the quantity at least two of the reflecting mirror, at least two
A reflecting mirror is mounted on side by side on the mirror unit.
3. focus control according to claim 2, which is characterized in that the quantity of the reflecting mirror is 5.
4. focus control according to claim 1, which is characterized in that the translation stage component includes driving mechanism and is used for
The mounting platform of the connection frame is installed, the driving mechanism is connect with the mounting platform, for driving the mounting platform
Guide rail extending direction along translation stage component moves.
5. focus control according to any one of claims 1 to 4, which is characterized in that the imaging suite body include Cmos,
For installing the Cmos mounting rack of the Cmos, the Cmos is mounted in the Cmos mounting rack.
6. focus control according to claim 5, which is characterized in that the Cmos assembly further includes Cmos adjusting pad,
The Cmos adjusting pad is mounted below the Cmos.
7. a kind of optical system, which is characterized in that the optical system includes focusing as described in any one of claims 1 to 6
Device, the optical system further include the micro slide for carrying article to be imaged, and focusing test label is carved on the micro slide, should
Focusing test label for focusing when as subject matter to be imaged with to by detect the focusing test mark image definition adjust
Coke, and record the position of focusing test label.
8. optical system according to claim 7, which is characterized in that the focusing test is labeled as multiple rows of setting arranged side by side in institute
The line segment according to the arrangement of default recurring rule stated on micro slide combines.
9. optical system according to claim 7, which is characterized in that the optical system further includes for placing micro slide
Micro slide platform, the micro slide platform surface has multiple for improving the grooves of rate of heat dissipation, multiple channel abreasts
It is arranged in the slide surface.
10. a kind of focus adjustment method, which is characterized in that the focus adjustment method includes the following steps:
Focus control is installed according to preset requirement；
It is powered to the focus control after installation；
The upper focusing test label of micro slide is imaged；
According to the image information of receiving, the height of Cmos adjusting pad is adjusted, and finely tunes mirror assembly, after image clearly,
It fastens installation part and simultaneously positions Cmos component and mirror assembly with locating piece, it is made to be spliced into large format, high-resolution clear
Image；
Imaging algorithm must be preset according to image according to the clarity of the focusing test of receiving label imaging calculate focussing signals；
The movement of translation stage Component driver Cmos component is controlled according to the focussing signals, realizes that focal plane is adjusted to adjust the clear of focal plane
Degree and stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052383.XA CN109656009A (en) | 2019-01-21 | 2019-01-21 | A kind of focus control, optical system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052383.XA CN109656009A (en) | 2019-01-21 | 2019-01-21 | A kind of focus control, optical system and method |
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| CN109656009A true CN109656009A (en) | 2019-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110602413A (en) * | 2019-09-04 | 2019-12-20 | 长春奥普光电技术股份有限公司 | Low-light-level night vision imaging system |
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| CN109246346A (en) * | 2018-10-26 | 2019-01-18 | 苏州国科医疗科技发展有限公司 | Large area array detection system towards biomedical micro-imaging |
| CN209446880U (en) * | 2019-01-21 | 2019-09-27 | 长春奥普光电技术股份有限公司 | A kind of focus control and optical system |
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| CN2491831Y (en) * | 2000-01-31 | 2002-05-15 | 鲍立威 | Optical detector based on CMOS element plane imaging |
| CN2444253Y (en) * | 2000-10-26 | 2001-08-22 | 浙江大学 | Lever slide block type focusing mechanism |
| CN102081218A (en) * | 2009-11-30 | 2011-06-01 | 鸿富锦精密工业（深圳）有限公司 | Focus device of image gauge |
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