CN107984080B - A kind of light channel structure for laser engraving machine - Google Patents
A kind of light channel structure for laser engraving machine Download PDFInfo
- Publication number
- CN107984080B CN107984080B CN201810016727.7A CN201810016727A CN107984080B CN 107984080 B CN107984080 B CN 107984080B CN 201810016727 A CN201810016727 A CN 201810016727A CN 107984080 B CN107984080 B CN 107984080B
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- turntable
- radial direction
- ring
- notch turntable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
Abstract
A kind of light channel structure for laser engraving machine of the present invention belongs to laser-engraving technique field；The light channel structure sets gradually object lens, pin hole, diaphragm and ellipsoidal mirror along the light direction of propagation；The objective focus positions and ellipsoidal mirror over focus position are overlapped, and pin hole is arranged in overlapping position；Collimated light beam forms point light source along optical axis direction illumination objective, in pin hole position, reflexes to perifocus position using ellipsoidal mirror, is converged to a hot spot；Diaphragm can move between pin hole and ellipsoidal mirror along optical axis direction, and the openings of sizes of diaphragm can adjust；The present invention is used for the light channel structure of laser engraving machine, and aberration can not only be eliminated from principle, improves the quality of laser beam, and has accurate control laser beam energy, changes the effect of laser beam convergent angle.
Description
The application is a kind of divisional application of application for a patent for invention " laser engraving machine light channel structure ".
The original bill applying date: 2017-01-11.
Original bill application number: 2017100209222.
A kind of original bill denomination of invention: laser engraving machine light channel structure.
Technical field
A kind of light channel structure for laser engraving machine of the present invention belongs to laser-engraving technique field.
Background technique
Laser engraving has a wide range of applications in fields such as woodcut, stone inscription, seals.The laser engraving of high quality needs tight
Lattice control the quality of laser beam, eliminate the interference of aberration to the full extent；Meanwhile also accurately to control the energy of laser beam, meeting
The parameters such as poly- angle.
Summary of the invention
For in laser engraving field, the technical need of laser beam quality and Parameter adjustable, the invention discloses one kind
For the light channel structure of laser engraving machine, aberration can not only be eliminated from principle, improve the quality of laser beam, and there is essence
Really control laser beam can, change laser beam convergent angle effect.
The object of the present invention is achieved like this:
A kind of light channel structure for laser engraving machine sets gradually object lens, pin hole, diaphragm and ellipse along the light direction of propagation
Spherical reflector；The objective focus positions and ellipsoidal mirror over focus position are overlapped, and pin hole is arranged in overlapping position；Directional light
Beam forms point light source along optical axis direction illumination objective, in pin hole position, reflexes to perifocus position using ellipsoidal mirror,
It is converged to a hot spot；Diaphragm can move between pin hole and ellipsoidal mirror along optical axis direction, the openings of sizes energy of diaphragm
Enough adjustment.
The openings of sizes of the above-mentioned light channel structure for laser engraving machine, diaphragm can adjust, by being realized with flowering structure:
The diaphragm is by the window transparent plate for the not pivoting being coaxially disposed, the radial direction notch turntable of pivoting
It is formed with the circumferencial direction notch turntable of pivoting；
The window transparent plate circumferencial direction the first ring and the second ring, in the first radius of radial direction and the second half
The region iuuminting that diameter surrounds, other regions are opaque；Folded central angle is between first radius and the second radiusα,αIt can be by
360 degree divide exactly；
The radial direction notch turntable is divided into 360/ in circumferencial directionαA region, in each area, in circumference
First ring and the second ring in direction, in the region iuuminting that two radiuses of radial direction surround, other regions are opaque；Two
Folded central angle is 360/ between radiusαIt is arranged in a region at arithmetic progression, maximum is no more thanα；
The circumferencial direction notch turntable is divided into 360/ in circumferencial directionαA region, in each area, in circumference
First ring in direction and two rings among the second ring, in the region that the first radius of radial direction and the second radius surround thoroughly
Light, other regions are opaque；The distance between two rings are 360/αIt is arranged in a region at arithmetic progression, maximum is no more than the
The distance between one ring and the second ring.
It is used for the light channel structure of laser engraving machine above, in the opposite side of window transparent plate and circumferencial direction notch turntable and half
The two sides of diameter direction notch turntable are provided with annular groove, and equidistantly distributed has ball in annular groove, and the ball is by ball rack
It is fixed；Window transparent plate and circumferencial direction notch turntable are made by magnetic material, and synonyms pole is staggered relatively, utilizes magnetic
Power adsorbs window transparent plate, radial direction notch turntable and circumferencial direction notch turntable.
It is used for the light channel structure of laser engraving machine above, window transparent plate to be fixedly mounted on sleeve, has on the sleeve
Two identical through slots disposed in parallel, the through slot cover 360-αThe circumference of angle；Radial direction notch turntable and circumference
Direction notch turntable side is provided with spanner, and the spanner is stretched out from the through slot being arranged on sleeve, pulls spanner, realizes
The rotation of radial direction notch turntable and circumferencial direction notch turntable.
360/ is equidistantly provided on the through slotαA sipes is provided with the through-hole for being directed toward sipes two sides on the spanner,
Spring is provided in through-hole, the two sides of the spring are mounted on cap nut；Spring in its natural state, between two caps away from
From through slot width is greater than, under compression, the distance between two caps are less than through slot width to spring.
The utility model has the advantages that
The first, the present invention for laser engraving machine light channel structure in, due to only be provided with object lens, pin hole, diaphragm and
In addition to this ellipsoidal mirror, then mixes light source and attenuator and can form complete light path system, element is few, structure letter
It is single；
The second, in the light channel structure in the present invention for laser engraving machine, due to having abandoned the lens knot in conventional light path
Structure, and ellipsoidal mirror is used, it solves the Aberration Problem that lens can not overcome from principle, greatly improves laser beam
Quality, effectively avoid aberration light beam to carving area outside injury, to improve engraving quality；
Third, since diaphragm can move between pin hole and ellipsoidal mirror along optical axis direction, can change
The irradiating angle of laser beam；Simultaneously as the openings of sizes of diaphragm can adjust, therefore the convergent angle of laser beam can be changed；
4th, the light channel structure due to the present invention for laser engraving machine uses ellipsoidal mirror, utilizes ellipsoid
Reflecting mirror bifocus conjugated nature utilizes the property that can also be emitted from the light beam of over focus incidence from over focus, with lens knot
Structure or plane mirror or spherical reflector are compared, and wide-angle convergence are realized, when can not only improve the engraving of coarse texture
Between, and can be realized special engraving effect.
Detailed description of the invention
Fig. 1 is the light channel structure schematic diagram that the present invention is used for laser engraving machine.
Fig. 2 is the structural schematic diagram of window transparent plate 31.
Fig. 3 is the structural schematic diagram of radial direction notch turntable 32.
Fig. 4 is the structural schematic diagram of circumferencial direction notch turntable 33.
Fig. 5 is the assembling structure schematic diagram of window transparent plate, radial direction notch turntable and circumferencial direction notch turntable.
Fig. 6 is the structural schematic diagram of ball rack.
Fig. 7 is the mounting structure schematic diagram between diaphragm and sleeve.
Fig. 8 is through slot expansion Local map.
Fig. 9 is schematic diagram of structural changes when spanner passes through through slot.
In figure: 1 object lens, 2 pin holes, 3 diaphragms, 31 window transparent plates, 32 radial direction notch turntables, 33 circumferencial direction notches
Turntable, 34 balls, 35 ball racks, 36 spanners, 37 springs, 38 caps, 4 ellipsoidal mirrors, 5 sleeves.
Specific embodiment
The specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Specific embodiment one
The light channel structure for laser engraving machine of the present embodiment, schematic diagram are as shown in Figure 1.This is for laser engraving machine
Light channel structure sets gradually object lens 1, pin hole 2, diaphragm 3 and ellipsoidal mirror 4 along the light direction of propagation；1 focus of object lens
Position and 4 over focus position of ellipsoidal mirror are overlapped, and pin hole 2 is arranged in overlapping position；Collimated light beam is along optical axis direction illumination objective
1, point light source is formed in 2 position of pin hole, perifocus position is reflexed to using ellipsoidal mirror 4, is converged to a hot spot；Diaphragm
3 can move between pin hole 2 and ellipsoidal mirror 4 along optical axis direction, and the openings of sizes of diaphragm 3 can adjust.
It should be noted that diaphragm 3 can move between pin hole 2 and ellipsoidal mirror 4 along optical axis direction, this field
Structure that technical staff can be axially moveable with reference to eyeglass in zoom lens relative to shell is realized, is not necessarily in this application
It is discussed in detail.
Specific embodiment two
The light channel structure for laser engraving machine of the present embodiment further limits on the basis of specific embodiment one
The openings of sizes of diaphragm 3 can adjust, by being realized with flowering structure:
The diaphragm 3 is by the window transparent plate 31 for the not pivoting being coaxially disposed, the radial direction notch of pivoting
Turntable 32 and the circumferencial direction notch turntable 33 of pivoting composition；
The window transparent plate 31 circumferencial direction the first ring and the second ring, in the first radius of radial direction and second
The region iuuminting that radius surrounds, other regions are opaque；Folded central angle is α between first radius and the second radius, and α can
Divided exactly by 360 degree；Window transparent plate 31 is as shown in Figure 2；
The radial direction notch turntable 32 is divided into 360/ α region in circumferencial direction, in each area, in circle
The first ring and the second ring of circumferential direction, in the region iuuminting that two radiuses of radial direction surround, other regions are opaque；Two
Folded central angle arranges in 360/ α region at arithmetic progression between a radius, and maximum is no more than α；Radial direction notch turns
Disk 32 is as shown in Figure 3；It should be noted that in the present invention, arranging at arithmetic progression, refer to that number is arranged according to size order
Afterwards at arithmetic progression, but can not arrange in sequence；
The circumferencial direction notch turntable 33 is divided into 360/ α region in circumferencial direction, in each area, in circle
First ring of circumferential direction and two rings among the second ring, in the region that the first radius of radial direction and the second radius surround
Light transmission, other regions are opaque；The distance between two rings arrange in 360/ α region at arithmetic progression, and maximum is no more than
The distance between first ring and the second ring；Circumferencial direction notch turntable 33 is as shown in Figure 4.
In the present embodiment, by direction of the rotating radius notch turntable 32 and circumferencial direction notch turntable 33, keep window saturating
31 transmission region of CD and 33 transmission region permutation and combination of radial direction notch turntable 32 and circumferencial direction notch turntable change light
The openings of sizes of door screen, to change the convergent angle of laser beam.
Specific embodiment three
The light channel structure for laser engraving machine of the present embodiment, on the basis of specific embodiment one or specific embodiment two
On, further limit the assembly of window transparent plate 31 in diaphragm 3, radial direction notch turntable 32 and circumferencial direction notch turntable 33
Structure, as shown in Figure 5.
In the two sides of the opposite side and radial direction notch turntable 32 of window transparent plate 31 and circumferencial direction notch turntable 33,
It is provided with annular groove, equidistantly distributed has ball 34 in annular groove, and the ball 34 is fixed by ball rack 35；Window transparent plate 31
It is made with circumferencial direction notch turntable 33 by magnetic material, synonyms pole is staggered relatively, using magnetic force, by window transparent plate
31, radial direction notch turntable 32 and circumferencial direction notch turntable 33 adsorb.
In the present embodiment, the structural schematic diagram of ball rack 35 is as shown in fig. 6, ball 34 is put into the hole of ball rack 35,
In the direction of vertical optical axis, the position of ball 34 is limited by ball rack 35；It should be noted that ball rack 35 is needed by transparent material
Material is made, it is ensured that light transmission.
Specific embodiment four
The light channel structure for laser engraving machine of the present embodiment, in specific embodiment one, specific embodiment two or specific
On the basis of embodiment three, the mounting structure between diaphragm 3 and sleeve 5 is further limited, as shown in Figure 7.
Window transparent plate 31 is fixedly mounted on sleeve 5, and there are two identical disposed in parallel logical on the sleeve 5
Slot, the circumference of the through slot covering 360- α angle；Radial direction notch turntable 32 and 33 side of circumferencial direction notch turntable are all provided with
It is equipped with spanner 36, the spanner 36 is stretched out from the through slot being arranged on sleeve 5, pulls spanner 36, realizes radial direction notch
The rotation of turntable 32 and circumferencial direction notch turntable 33.
Mounting structure between the present embodiment diaphragm 3 and sleeve 5 can be realized radial direction notch turntable 32 and circumference side
The technical purpose being pivoted to notch turntable 33.
Specific embodiment five
The light channel structure for laser engraving machine of the present embodiment further limits on the basis of specific embodiment four
Matching relationship between spanner 36 and through slot.
Wherein, 360/ α sipes is equidistantly provided on through slot, it is as shown in Figure 8 that Local map is unfolded in through slot；
It is provided with the through-hole for being directed toward sipes two sides on the spanner 36, is provided with spring 37 in through-hole, the spring 37
Two sides are mounted on cap nut 38；In its natural state, the distance between two caps 38 are greater than through slot width, spring 37 to spring 37
Under compression, the distance between two caps 38 are less than through slot width.
Structure change when spanner 36 is by through slot is as shown in Figure 9, it should be noted that between spring 37 and cap nut 38
Mounting means, those skilled in the art can be realized, do not need to introduce in further detail.
Such structure design, when can make spanner 36 by sipes, under the elastic force effect of spring 37, two caps 38 block
In sipes, the positioning of pair radius direction notch turntable 32 and 33 circumferencial direction of circumferencial direction notch turntable is realized, and then make window
Mouth transparent plate 31, radial direction notch turntable 32 and circumferencial direction notch turntable 33 are in fixed position permutation and combination.
Claims (1)
1. a kind of light channel structure for laser engraving machine, which is characterized in that along the light direction of propagation set gradually object lens (1),
Pin hole (2), diaphragm (3) and ellipsoidal mirror (4)；Object lens (1) focal position and ellipsoidal mirror (4) over focus position
Coincidence is set, pin hole (2) are arranged in overlapping position；Collimated light beam forms point light along optical axis direction illumination objective (1), in pin hole (2) position
Source reflexes to perifocus position using ellipsoidal mirror (4), is converged to a hot spot；Diaphragm (3) can in pin hole (2) and
Ellipsoidal mirror moves between (4) along optical axis direction, and the openings of sizes of diaphragm (3) can adjust；
The openings of sizes of diaphragm (3) can adjust, by being realized with flowering structure:
The diaphragm (3) is by the window transparent plate (31) for the not pivoting being coaxially disposed, the radial direction notch of pivoting
Turntable (32) and the circumferencial direction notch turntable (33) of pivoting composition；
The window transparent plate (31) circumferencial direction the first ring and the second ring, in the first radius of radial direction and the second half
The region iuuminting that diameter surrounds, other regions are opaque；Folded central angle is α between first radius and the second radius, and α can be whole
Except 360 degree；
The radial direction notch turntable (32) is divided into 360/ α region in circumferencial direction, in each area, in circumference
First ring and the second ring in direction, in the region iuuminting that two radiuses of radial direction surround, other regions are opaque；Two
Folded central angle arranges in 360/ α region at arithmetic progression between radius, and maximum is no more than α；
The circumferencial direction notch turntable (33) is divided into 360/ α region in circumferencial direction, in each area, in circumference
First ring in direction and two rings among the second ring, in the region that the first radius of radial direction and the second radius surround thoroughly
Light, other regions are opaque；The distance between two rings arrange in 360/ α region at arithmetic progression, and maximum is no more than the
The distance between one ring and the second ring；
In the two sides of the opposite side and radial direction notch turntable (32) of window transparent plate (31) and circumferencial direction notch turntable (33),
It is provided with annular groove, there is ball (34) equidistantly distributed in annular groove, the ball (34) is fixed by ball rack (35)；Window
Transparent plate (31) and circumferencial direction notch turntable (33) are made by magnetic material, and synonyms pole is staggered relatively, using magnetic force,
Window transparent plate (31), radial direction notch turntable (32) and circumferencial direction notch turntable (33) are adsorbed；
Window transparent plate (31) is fixedly mounted on sleeve (5), and there are two identical disposed in parallel logical on the sleeve (5)
Slot, the circumference of the through slot covering 360- α angle；Radial direction notch turntable (32) and circumferencial direction notch turntable (33) side
It is provided with spanner (36), the spanner (36) is stretched out in the through slot on sleeve (5) from setting, is pulled spanner (36), is realized
The rotation of radial direction notch turntable (32) and circumferencial direction notch turntable (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016727.7A CN107984080B (en) | 2017-01-11 | 2017-01-11 | A kind of light channel structure for laser engraving machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016727.7A CN107984080B (en) | 2017-01-11 | 2017-01-11 | A kind of light channel structure for laser engraving machine |
| CN201710020922.2A CN106695114B (en) | 2017-01-11 | 2017-01-11 | A kind of laser engraving machine light channel structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020922.2A Division CN106695114B (en) | 2017-01-11 | 2017-01-11 | A kind of laser engraving machine light channel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107984080A CN107984080A (en) | 2018-05-04 |
| CN107984080B true CN107984080B (en) | 2019-05-03 |
Family
ID=58907488
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020922.2A Expired - Fee Related CN106695114B (en) | 2017-01-11 | 2017-01-11 | A kind of laser engraving machine light channel structure |
| CN201810016729.6A Expired - Fee Related CN108080784B (en) | 2017-01-11 | 2017-01-11 | A kind of light channel structure towards laser engraving machine |
| CN201810016728.1A Expired - Fee Related CN107984081B (en) | 2017-01-11 | 2017-01-11 | Laser engraving machine light channel structure |
| CN201810016727.7A Expired - Fee Related CN107984080B (en) | 2017-01-11 | 2017-01-11 | A kind of light channel structure for laser engraving machine |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020922.2A Expired - Fee Related CN106695114B (en) | 2017-01-11 | 2017-01-11 | A kind of laser engraving machine light channel structure |
| CN201810016729.6A Expired - Fee Related CN108080784B (en) | 2017-01-11 | 2017-01-11 | A kind of light channel structure towards laser engraving machine |
| CN201810016728.1A Expired - Fee Related CN107984081B (en) | 2017-01-11 | 2017-01-11 | Laser engraving machine light channel structure |
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| Country | Link |
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| CN (4) | CN106695114B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453692B (en) * | 2020-12-01 | 2022-03-29 | 强一半导体（苏州）有限公司 | MEMS probe laser etching method |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4942583A (en) * | 1988-06-17 | 1990-07-17 | Hewlett-Packard Company | Misalignment-tolerant, grating-tuned external-cavity laser |
| DE4345010A1 (en) * | 1993-12-30 | 1995-07-06 | Ni Skij Masinostroitel Nyj I | Appts. for light beam welding and soldering |
| JPH11195580A (en) * | 1997-12-25 | 1999-07-21 | Ball Semiconductor Inc | Apparatus and method for exposing semiconductors |
| JP2002258212A (en) * | 2001-03-02 | 2002-09-11 | Ricoh Co Ltd | Lighting system for projector |
| EP1588793B1 (en) * | 2002-12-05 | 2012-03-21 | Hamamatsu Photonics K.K. | Laser processing devices |
| ATE416878T1 (en) * | 2004-08-06 | 2008-12-15 | Trumpf Werkzeugmaschinen Gmbh | LASER PROCESSING HEAD |
| US7223002B2 (en) * | 2004-08-09 | 2007-05-29 | Miller Jack V | Hybrid fiber optic framing projector |
| CN101323053A (en) * | 2008-07-16 | 2008-12-17 | 上海大学 | Femtosecond laser microsphere perforating method and apparatus |
| IT1394891B1 (en) * | 2008-07-25 | 2012-07-20 | Matteo Baistrocchi | SCRIBING LASER PLANT FOR THE SURFACE TREATMENT OF MAGNETIC SIDES WITH ELLIPTICAL SECTION SPOT |
| CN103631017B (en) * | 2013-11-15 | 2016-01-06 | 广州市浩洋电子有限公司 | The optical system of the varifocal imaging lamp of a kind of LED |
| CN204228121U (en) * | 2014-10-09 | 2015-03-25 | 无锡中科光电技术有限公司 | A kind of ellipsoidal mirror surface shape detection apparatus |
| CN104501042A (en) * | 2014-12-15 | 2015-04-08 | 天津大学 | Engineering diffuser-based infrared spectrometer light source system |
| DE102015201300A1 (en) * | 2015-01-26 | 2016-07-28 | Osram Gmbh | Lighting device with light source and reflector with ellipsoidal reflecting surface |
| CN104570363B (en) * | 2015-02-03 | 2018-06-01 | 大族激光科技产业集团股份有限公司 | A kind of Gaussian laser beam shaping methods and device and precise laser micropore processing device |
| CN205539738U (en) * | 2016-03-31 | 2016-08-31 | 长春博信光电子有限公司 | Beam enlarging lens |
| CN105911716B (en) * | 2016-04-11 | 2018-05-29 | 中国科学院西安光学精密机械研究所 | It is a kind of to pass the light path regulating device and its adjusting method that camera lens is tested in letter test |
-
2017
- 2017-01-11 CN CN201710020922.2A patent/CN106695114B/en not_active Expired - Fee Related
- 2017-01-11 CN CN201810016729.6A patent/CN108080784B/en not_active Expired - Fee Related
- 2017-01-11 CN CN201810016728.1A patent/CN107984081B/en not_active Expired - Fee Related
- 2017-01-11 CN CN201810016727.7A patent/CN107984080B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108080784B (en) | 2019-05-28 |
| CN106695114A (en) | 2017-05-24 |
| CN106695114B (en) | 2018-05-25 |
| CN107984080A (en) | 2018-05-04 |
| CN108080784A (en) | 2018-05-29 |
| CN107984081B (en) | 2019-05-03 |
| CN107984081A (en) | 2018-05-04 |
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Granted publication date: 20190503 Termination date: 20210111 |