CN206019885U - Glass surface stress detection device - Google Patents
Glass surface stress detection device Download PDFInfo
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- CN206019885U CN206019885U CN201621061918.8U CN201621061918U CN206019885U CN 206019885 U CN206019885 U CN 206019885U CN 201621061918 U CN201621061918 U CN 201621061918U CN 206019885 U CN206019885 U CN 206019885U
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- 238000001514 detection method Methods 0.000 title claims abstract description 132
- 239000011521 glass Substances 0.000 title claims abstract description 74
- 239000010453 quartz Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005286 illumination Methods 0.000 claims abstract description 8
- 230000010287 polarization Effects 0.000 claims abstract description 7
- 239000004606 Fillers/Extenders Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000000116 mitigating effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005336 safety glass Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
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Abstract
This application discloses a kind of glass surface stress detection device, which includes：Lighting unit, for providing polarization illumination light, the lighting unit includes light source；Detection prism, which has the detection surface for fitting to be detected with the surface of detected glass；And image-generating unit, which includes quartz wedge, analyser plate and the lens group set gradually along light path, wherein, the lighting unit also includes cylindrical mirror, the cylindrical mirror is arranged between the light source and the detection prism, there is positive radial power, and cylindrical mirror is arranged so which is axially perpendicular to the light path plane normal that at least part of light is located jointly with the detection normal to a surface.Illumination light is assembled by cylindrical mirror, make the light on the detection surface for incide detection prism that there are the different incidence angles for containing the cirtical angle of total reflection, make it possible to the work for mitigating or even eliminating manual adjustment angle of incidence, and cause the overall structure of glass surface stress detection device compacter.
Description
Technical field
A kind of a kind of it relates to optical detection apparatus, in particular it relates to glass surface stress detection device.
Background technology
Glass plate is all common material in daily life and commercial production.In order to weigh glass sheet quality, guarantee glass
The safety that plate is used, it is often necessary to which the stress in glass plate is measured.In order to detect glass plate stress, in standards such as GBs
Middle regulation, the surface stress for measuring glass using birefringent mode, to characterize the stress level of inside glass.At present, actual
In use, the mode for determining glass surface stress mainly has：Differential surface refraction process DSR (Differential Surface
Refractometry), surface sweep angle polarisation method GASP (Grazing Angle Surface Plarimetry), and in the recent period
The method that Estonia is proposed transmission laser.Wherein GASP modes have higher to surface stress than relatively low safety glass
Certainty of measurement, it is adaptable to the surface stress detection of the architectural semi-tempered glass for using.
The measuring principle of GASP is：Incident polarization light beam enter glass surface thin layer, parallel glass surface run one section away from
Glass is left after, and as glass surface stress, light beam produce birefringent phenomenon, its optical path difference can be accurate by quartz wedge
Measure.Quartz wedge can be made into multiple accuracy classes, and therefore regardless of stress intensity, GASP accurately can be determined.
However, the glass surface stress detection device of existing GASP modes needs to adjust angle of incident light in measurement process
Degree and two degree of freedom of incidence point, need after outgoing adjust reflecting mirror position and angle, the part for manually adjusting compared with
Many, cumbersome, efficiency is low, it is impossible to work under high light, adaptability is low, and equipment volume is big, carries inconvenient.
Utility model content
In view of drawbacks described above present in prior art or deficiency, this utility model is there is provided a kind of simple structure, operation
Easy Portable glass surface stress detection means.
According to embodiment of the present utility model, there is provided a kind of glass surface stress detection device, which includes：Illumination is single
Unit, for providing polarization illumination light, the lighting unit includes light source；Detection prism, which has for the table with detected glass
The detection surface that face is fitted to be detected, at least part of light in the light of the lighting unit are entered with the cirtical angle of total reflection
The detection surface of the detection prism is incident upon, and is detected after glass surface is propagated by the detection surface from the quilt on edge
Detection glass surface coupling is derived；And image-generating unit, which includes quartz wedge, analyser plate and the lens set gradually along light path
Group, the image-generating unit are arranged to the light received from the detection prism and form detection image, and wherein, the lighting unit is also
Including cylindrical mirror, the cylindrical mirror is arranged between the light source and the detection prism, with positive radial power, and post
Face mirror is arranged so which is axially perpendicular to the light path method that at least part of light is located jointly with the detection normal to a surface
Line plane.
Preferably, the light source can include that laser instrument and collimator and extender mirror, the collimator and extender mirror expand from described
The diameter of the light beam of laser instrument.
Preferably, the light source can also include the refractive power system being arranged between the laser instrument and the collimator and extender mirror
System, the dioptric system is by the light path folding 180 degree between laser instrument and collimator and extender mirror.
Preferably, the lighting unit can also include being arranged on the polarizer behind the cylindrical mirror along light path.
Preferably, the lighting unit can also include being arranged between the light source and the detection prism along light path
Diaphragm, for blocking at least part of light of the angle of incidence less than the cirtical angle of total reflection in the light for being incident to the detection surface.More excellent
Selection of land, the diaphragm edge is that position is adjustable perpendicular to the direction of light path.
The detection prism can also include the light for entering detection prism is reflected and is channeled to the detection
The reflecting surface on surface.
The image-generating unit can also include be arranged on described detection prism and the quartz wedge between reflecting mirror and
For adjusting the adjusting means of the reflector position and attitude.
Preferably, glass surface stress detection device can also include shading outer housing, the lighting unit, detection prism and
Image-generating unit is contained in the shading outer housing, and the shading outer housing is formed with detection hole, the detection table of the detection prism
Expose from the detection hole in face.
Preferably, glass surface stress detection device can also include image detecting element, and which is detected by the imaging
The image that unit is formed.
Preferably, the glass surface stress detection device can also include：The data being arranged in the shading outer housing
Processing unit, described image detector unit are electrically connected with data processing unit；Be formed on the surface of the shading outer housing or
The display unit being supported on the shading outer housing, the display unit is electrically connected to the data processing unit, for showing
State detection image.
In this utility model, illumination light is assembled by adding cylindrical mirror so that incide the detection surface of detection prism
On light there are different angle of incidence, wherein contain critical angle, so that can mitigate or even eliminate manual adjustment and enter
The work of firing angle.Correspondingly, can so omit for adjusting the part of angle of incidence, so that glass surface stress mornitoring dress
The overall structure that puts is compacter.
Description of the drawings
The detailed description to non-limiting example that is made by referring to the following drawings, other spies of the present utility model
Levy, objects and advantages will become more apparent upon, in accompanying drawing, identical reference represents identical or corresponding part and feature.
Fig. 1 is the structural representation of the glass surface stress detection device according to this utility model embodiment 1；
Fig. 2 is the structural representation of the glass surface stress detection device according to this utility model embodiment 2；
Fig. 3 is the structural representation of the glass surface stress detection device according to this utility model embodiment 3；
Fig. 4 is the structural representation of the glass surface stress detection device according to this utility model embodiment 4.
Specific embodiment
With reference to the accompanying drawings and examples the application is described in further detail.It is understood that this place is retouched
The specific embodiment that states is used only for explaining relevant utility model, rather than the restriction to the utility model.Further need exist for illustrating
, for the ease of description, in accompanying drawing, illustrate only the part related to utility model.
Fig. 1 is the structural representation of the glass surface stress detection device 100 according to this utility model embodiment 1.Such as Fig. 1
Shown, glass surface stress detection device 100 includes：Lighting unit 10, detection prism 20 and image-generating unit 30.
Lighting unit 10 is used for providing polarization illumination light.The lighting unit includes light source.Lighting unit 10 also includes cylinder
Mirror 15, the cylindrical mirror 15 are arranged between light source and detection prism 20, and cylindrical mirror 15 is arranged so which is axially perpendicular to light path
Plane normal.Here light path plane normal refers to the plane that incident ray is located jointly with normal.
Detection prism 20 has the detection surface 20a for fitting to be detected with the surface of detected glass, from
At least part of light in the light of the lighting unit 10 is incident to detection surface 20a with the cirtical angle of total reflection, and along detected
Glass surface is derived from the detected glass surface 20a couplings by the detection surface after propagating.
Image-generating unit 30 includes quartz wedge 32, analyser plate 33 and the lens group 34 set gradually along light path.The imaging list
Unit 30 is arranged to receive the light of Autonomous test prism 20 and form detection image.
In the example shown, the light beam from light source will produce the fan-shaped convergent beam that assembles by cylindrical mirror 15, fan-shaped
Convergent beam is directed on the detection surface of detection prism 20.Fan-shaped convergent beam has difference when detection prism 20 is entered
Angle of incidence, in these angle of incidence include the cirtical angle of total reflection.Therefore, fan-shaped convergent beam is produced by cylindrical mirror and causes incidence
At least part of light in light on the detection surface 20a of detection prism 20 has the cirtical angle of total reflection, and this part light can be by
For detecting glass surface stress by GASP methods.Compared to glass surface stress detection device of the prior art, according to
The glass surface stress detection device of this utility model embodiment can mitigate or even save the incident detection surface 20a of light regulating
When angle of incidence work；Correspondingly, also so that the structure of device is simpler compact.
In the example illustrated in figure 1, the light source in lighting unit 10 includes laser instrument 12 and collimator and extender mirror 13.Laser instrument 12
The laser monochromaticity that sends is good, coherence is good, good directionality, brightness are high.Collimator and extender mirror 13 is used for expanding from laser instrument 12
Light beam diameter so that enter cylindrical mirror 15 light beam be collimated beam.
However, in this regard, this utility model is not limited to this；According to glass surface stress mornitoring of the present utility model
In device, light source can also take other suitable forms.For example, light source can include monochromatic LED, and be not limited to using accurate
Straight beam expanding lens.
Lighting unit 10 can also include the polarizer 16, for selecting the light of certain polarization direction to carry out irradiating and detecting prism
20.Certain polarization direction be, for example, with light path plane normal into approximate 45 ° of direction, but be not restricted to that this.The polarizer
16 can be arranged on any appropriate position in the light path before detection prism, for example, be arranged on cylindrical mirror 15 as shown in Figure 1
And detection prism 20 between.In the case where light source includes laser instrument, it is possible to use or do not use the polarizer 16.
Rectangular prism that detection prism 20 can be triangular prism, the plane of incidence is circular arc type etc..The detection rib illustrated in Fig. 1
Mirror 20 is square prism.Detection prism 20 has the detection surface 20a for fitting with the surface of detected glass.Detection prism
20 also include reflecting the light for entering detection prism 20 and being channeled to the reflecting surface 20b for detecting surface.
Detection prism 20 can include importing prism 21 and derive prism 22, and this two parts can use metal partion (metp) or diaphragm
Separate.
Detection prism 20 is entered from the fan-shaped convergent beam of cylindrical mirror 15, and detection table is irradiated to different angle of incidence
On the 20a of face, wherein there is at least part of light of the cirtical angle of total reflection to enter and be detected glass surface, one section is propagated along glass surface
Derive apart from the coupling of rear detected surface 20a.Due to glass surface stress, light beam produces birefringent phenomenon, therefore, from inspection
Survey the optical path difference contained in the light that surface 20a is derived on a direction.
The light of the derivation is through quartz wedge 32, then launches after analyser plate 33 to lens group 34.Using quartz wedge
32 can make light produce the optical path difference on another different directions, and which is superimposed with the optical path difference caused due to birefringence, makes light
The interference fringe for producing inclination interfered by line.Glass surface stress value is directly proportional to the inclination angle tan of interference fringe.Determine
The inclination angle of interference fringe, it is possible to calculate glass surface stress value.
Image-generating unit 30 can also include the reflecting mirror 31 being arranged between detection prism 20 and quartz wedge 32 and be used for
Adjust the position of the reflecting mirror 31 and the adjusting means (not shown) of attitude.Reflecting mirror 31 is placed in detection prism 20 and quartz
Between wedge 32, and detection prism 20 is closed on, the light from detection 20 outgoing of prism is reflected into quartz wedge 32.Close on detection rib
The position of the reflecting mirror 31 of mirror 20 can be adjusted via adjusting means by user, so as to adjust the light for entering lens group 34
Angle.Adjusting means can be with silk component, with the precision for improving ease for use and adjust.
Glass surface stress detection device 100 according to this utility model embodiment can also include image detecting element
35, which detects the image formed by image-generating unit 30.Image detecting element 35 can be Charge Coupled Device (CCD) imageing sensor
(Charge Coupled Device, CCD) camera, the light from the critical angle for detecting 20 incidence of prism is after lens group 34
It is imaged onto in CCD camera 35.CCD camera is used as a kind of novel photoelectric-detection device, the energy with storage and transinformation electric charge
Power, can be done directly collection, conversion, storage and the output of spatial information.
In addition, glass surface stress detection device 100 can also include outer housing 40.The outer housing is preferably shading outer housing.Hide
Light outer housing 40 accommodates above-mentioned lighting unit 10, detection prism 20 and image-generating unit 30 etc., for masking from outside veiling glare.
Fig. 2 is the structural representation of the glass surface stress detection device according to this utility model embodiment 2.The present embodiment
In structure essentially identical with the structure of previous embodiment 1, i.e., detection prism 20 and imaging system 30 using identical element and
Structure, difference are, in the illuminator 10 ' of glass surface stress detection device 100 ', in laser instrument 12 and beam expanding lens
Dioptric system 14 is provided between 13, and the dioptric system 14 is by 180 ° of light path folding between laser instrument 12 and beam expanding lens 13.
Typically, the volume of laser instrument 12 is larger, and such as height dimension is up to about 7-8cm.If by laser instrument 12
Heart axis is directed at the central axis of collimator and extender mirror 13 and is arranged in the surface of collimator and extender mirror 13, then the inspection of glass surface stress
The overall height dimension for surveying device 100 ' can be larger.By using dioptric system 14 by between laser instrument 12 and collimator and extender mirror 13
Light path folding 180 degree, the height dimension of device 100 ' can be substantially reduced.As shown in Fig. 2 dioptric system 14 can include many
Individual reflecting mirror.Alternatively, dioptric system 14 can also include at least one prism.
Fig. 3 is the structural representation of the glass surface stress detection device according to this utility model embodiment 3.The present embodiment
In structure essentially identical with the structure of previous embodiment 1, difference is, glass surface stress detection device 100 " photograph
Bright unit 10 also includes being arranged on the diaphragm 17 between light source 11 and detection prism 20 along light path, is incident to detection prism to limit
Light range between 20 detection surface and detected glass surface, particularly is used for blocking being incident to the detection surface
At least part of light of the angle of incidence less than the cirtical angle of total reflection in light.
Specifically, a part of incident angle for sending from lighting unit 10 is entered less than the light of angle of total reflection critical angle
In detected glass, back reflection is returned, and is again introduced into detecting prism 20 and becoming interference light.The effect of diaphragm 17 is to enter
This part is blocked before being incident upon detection prism 20 may become the incident illumination of interference light.Further, diaphragm 17 along perpendicular to
The direction of light path is that position is adjustable, to be applied to different application scenarios, especially because being detected the refractive index of glass not
The occasion for causing the cirtical angle of total reflection different together.As shown in Fig. 2 diaphragm 17 can be positioned over light source 11 and cylindrical mirror 15 it
Between.In diagram, the position of diaphragm 17 is for illustration only, and this utility model is not limited to this.For example diaphragm 17 can also be positioned over post
Between face mirror 15 and detection prism 20, if lighting unit 10 includes that the polarizer 16, diaphragm 17 can also be arranged in cylindrical mirror 15
Between the polarizer 16 or between the polarizer 16 and detection prism 20.
Fig. 4 is the structural representation of the glass surface stress detection device according to this utility model embodiment 4.Such as Fig. 4 institutes
Show, on shading outer housing 40, could be formed with detection hole (not shown), detect that the detection surface 20a of prism 20 exposes from detection hole.
In order to allow user be visually known testing result, glass surface stress detection device can also include：If
The data processing unit (not shown) in the shading outer housing 40 is put, image detecting element 35 is electrically connected with data processing unit
Connect；And the display unit 90 for being formed on the surface of shading outer housing 40 or being supported on shading outer housing 40, as shown in Figure 4.Aobvious
Show that unit 90 can include the graph image interface for showing testing result, and control is built in the small data in shading outer housing 40
Entity or the virtual keys such as initialization, clearing, calibration, fault detect are carried out according to processing unit.Display unit 90 can be
Touch display screen.Further, display unit 90 is also further integrated with computing module, for completing at least part of data processing
Task.
It should be understood that glass surface stress detection device of the present utility model is not limited to imaging list described above
The specific function of unit or construction.Specifically, although in first embodiment above and its modification, image-generating unit includes lens group,
But the image-generating unit that any other suitable form can be had according to glass surface stress detection device of the present utility model.Example
As image-generating unit can be implemented as simply as the mesh of the interference fringe that the light for being totally reflected is produced by direct visual perception
Depending on viewing system, reflecting mirror can not be included or including more or less of reflecting mirror, etc..
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art
Member should be appreciated that involved utility model scope in the application, however it is not limited to the particular combination of above-mentioned technical characteristic
Technical scheme, while should also cover in the case of without departing from the inventive concept, by above-mentioned technical characteristic or its equivalent feature
Other technical schemes for carrying out combination in any and being formed.Such as features described above has class with (but not limited to) disclosed herein
Like the technical scheme that the technical characteristic of function is replaced mutually and formed.
Claims (11)
1. a kind of glass surface stress detection device, including：
Lighting unit, for providing polarization illumination light, the lighting unit includes light source；
Detection prism, which has the detection surface for fitting to be detected with the surface of detected glass, from the photograph
At least part of light in the light of bright unit is incident to the detection surface of the detection prism with the cirtical angle of total reflection, and along tested
Survey；With
Image-generating unit, it include that quartz wedge, analyser plate and the lens group set gradually along light path, the image-generating unit are arranged to connect
Receive the light from the detection prism and form detection image,
Characterized in that,
The lighting unit also includes cylindrical mirror, and the cylindrical mirror is arranged between the light source and the detection prism, with just
Radial power, and cylindrical mirror is arranged so which is axially perpendicular to the method for at least part of light and the detection surface
The light path plane normal that line is located jointly.
2. glass surface stress detection device as claimed in claim 1, it is characterised in that the light source includes laser instrument and standard
Straight beam expanding lens, the collimator and extender mirror expand the diameter of the light beam from the laser instrument.
3. glass surface stress detection device as claimed in claim 2, it is characterised in that the light source also includes being arranged on institute
State the dioptric system between laser instrument and the collimator and extender mirror, the dioptric system is by the light between laser instrument and collimator and extender mirror
Road folds 180 degree.
4. glass surface stress detection device as claimed in claim 1, it is characterised in that the lighting unit is also included along light
Road is arranged on the cylindrical mirror polarizer below.
5. glass surface stress detection device as claimed in claim 1, it is characterised in that the lighting unit is also included along light
Road is arranged on the diaphragm between the light source and the detection prism, incident in the light for being incident to the detection surface for blocking
At least part of light of the angle less than the cirtical angle of total reflection.
6. glass surface stress detection device as claimed in claim 5, it is characterised in that the diaphragm is along perpendicular to light path
Direction is that position is adjustable.
7. glass surface stress detection device as claimed in claim 1, it is characterised in that the detection prism is also included to entering
Enter to detect that the light of prism is reflected and is channeled to the reflecting surface on the detection surface.
8. glass surface stress detection device as claimed in claim 1, it is characterised in that the image-generating unit also includes arranging
Reflecting mirror between the detection prism and the quartz wedge and the regulation dress for adjusting the reflector position and attitude
Put.
9. the glass surface stress detection device as any one of claim 1-8, it is characterised in that also include outside shading
Cover, the lighting unit, detection prism and image-generating unit are contained in the shading outer housing, and the shading outer housing is formed with inspection
Gaging hole, the detection surface of the detection prism expose from the detection hole.
10. glass surface stress detection device as claimed in claim 9, it is characterised in that also include image detecting element, its
The image that detection is formed by the image-generating unit.
11. glass surface stress detection devices as claimed in claim 10, it is characterised in that the glass surface stress mornitoring
Device also includes：
The data processing unit being arranged in the shading outer housing, described image detector unit are electrically connected with data processing unit；
With
The display unit for being formed on the surface of the shading outer housing or being supported on the shading outer housing, the display unit are electrically connected
The data processing unit is connected to, for showing the detection image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621061918.8U CN206019885U (en) | 2016-09-18 | 2016-09-18 | Glass surface stress detection device |
| PCT/CN2017/102101 WO2018050114A1 (en) | 2016-09-18 | 2017-09-18 | Glass surface stress detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621061918.8U CN206019885U (en) | 2016-09-18 | 2016-09-18 | Glass surface stress detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206019885U true CN206019885U (en) | 2017-03-15 |
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ID=58261409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621061918.8U Active CN206019885U (en) | 2016-09-18 | 2016-09-18 | Glass surface stress detection device |
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| Country | Link |
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| CN (1) | CN206019885U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441655A (en) * | 2016-09-18 | 2017-02-22 | 北京杰福科技有限公司 | Glass surface stress detecting device |
| WO2018050114A1 (en) * | 2016-09-18 | 2018-03-22 | 北京杰福科技有限公司 | Glass surface stress detection device |
-
2016
- 2016-09-18 CN CN201621061918.8U patent/CN206019885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441655A (en) * | 2016-09-18 | 2017-02-22 | 北京杰福科技有限公司 | Glass surface stress detecting device |
| WO2018050114A1 (en) * | 2016-09-18 | 2018-03-22 | 北京杰福科技有限公司 | Glass surface stress detection device |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240320 Address after: Room 520, 5th Floor, Building 3, Courtyard 69, Fushi Road, Haidian District, Beijing, 100143 Patentee after: BEIJING JEFFOPTICS Co.,Ltd. Country or region after: Zhong Guo Address before: Room 225, Building 1, Jimenli Community, Haidian District, Beijing 100191 Patentee before: BEIJING JEFFOPTICS Co.,Ltd. Country or region before: Zhong Guo Patentee before: NANTONG JIEFU OPTICAL INSTRUMENT TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |