CN106378532A - Device for generating micro-type two-dimensional code inside glass and sapphire - Google Patents
Device for generating micro-type two-dimensional code inside glass and sapphire Download PDFInfo
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- CN106378532A CN106378532A CN201610784953.0A CN201610784953A CN106378532A CN 106378532 A CN106378532 A CN 106378532A CN 201610784953 A CN201610784953 A CN 201610784953A CN 106378532 A CN106378532 A CN 106378532A
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- sapphire
- laser
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- dimensional code
- lens
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Classifications
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- 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
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- 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
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
- B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a device for generating a micro-type two-dimensional code inside glass and sapphire. The device comprises an ultrafast laser device, a beam expander, a scanning galvanometer, a laser beam focusing lens and a control system; a laser beam emitted by the ultrafast laser device sequentially passes through the beam expander, the scanning galvanometer and the laser beam focusing lens; the beam expander is used for transforming the laser beam emitted by the ultrafast laser device into parallel laser; the track of the parallel laser is changed through the scanning galvanometer, and finally the parallel laser is imaged inside the to-be-identified glass and sapphire through the laser beam focusing lens; the control system is electrically connected with the ultrafast laser device and the scanning galvanometer respectively; the control system is capable of realizing control on energy of the ultrafast laser device and deflection track of the scanning galvanometer through electric signals. By utilizing ultrafast laser, the device disclosed by the invention is capable of realizing processing of a two-dimensional code with a smaller size and is simultaneously incapable of affecting the appearance and the original strength of the glass and sapphire.
Description
Technical field
The invention belongs to technical field of laser processing is and in particular to one kind is internally generated micro two-dimensional in glass and sapphire
The device of code.
Background technology
Article Quick Response Code trace-back technique is a kind of directly to give information in the form of Quick Response Code on article, for article
The tracing management of information.Recently as the development of Quick Response Code itself and recognition technology and laser technology, finely marked by laser
The Quick Response Code that note technology generates obtains as the main information carrier that article body identify more and more to be approved, automobile,
The fields such as Aero-Space, electronics, medicine and military project are with a wide range of applications, and are that direct thing mark tracing technology is following important
Development trend.Laser two-dimensional code book body mark has essential distinction with traditional laser marking, the latter only visually see one
Individual labelling or serial number, and laser two-dimensional code mark then contains abundant Item Information, is the data file of a specification.With
Traditional bar code, Quick Response Code printed label are different, and the Quick Response Code mark that laser generates may insure article mark in product system
The whole life cycle made, circulate and use stands intact, and directly can intelligently read Quick Response Code mark by code reader or mobile terminal
Know (data file) information, each identified thing identity has uniqueness, thus for the manufacturing process management of product, trace to the source,
False proof, supervision mark provides effective efficiently identification means.
Manufacture field in 3C, glass and sapphire, usually as the cover sheet of electronic product, are typically adopted in production process
With meeting printing, label, Quick Response Code is etched on ink glass.This mode can destroy surface and the outward appearance of product, Er Qie
In the process of circulation may by artificial the reason cause None- identified, thus ineffective.
Existing laser, in glass marker Quick Response Code, is typically marked using nanosecond green glow, within carving mode will
Quick Response Code is marked at material internal.Compared to ultrafast light source, because the difference of laser peak, explosion can be produced no in material internal
Method generates miniature sizes Quick Response Code.After nanosecond light source processing simultaneously, the bulk strength of glass is also had with certain impact.
Content of the invention
The present invention is directed to inside glass and sapphire and processes the easy explosion of Quick Response Code, to glass after being processed using nanosecond light source
Glass and sapphire outward appearance and original intensity impact etc. technical problem provide a kind of using ultrafast laser in glass and indigo plant
Gem is internally generated the device of micro two-dimensional code.
In order to solve the above problems, the technical solution adopted in the present invention is：
A kind of device being internally generated micro two-dimensional code in glass and sapphire, including ultrafast laser, beam expanding lens, scanning
Galvanometer, beam focusing lens and control system, the laser beam that described ultrafast laser sends sequentially passes through beam expanding lens, scanning galvanometer
And beam focusing lens, the laser beam that ultrafast laser sends sent out and becomes directional light by described beam expanding lens, and described directional light passes through
Scanning galvanometer, to change the track of light, eventually passes beam focusing lens and images in inside the glass that need to identify and sapphire, institute
State control system to be electrically connected with ultrafast laser and scanning galvanometer respectively, control system is realized to ultrafast laser by the signal of telecommunication
The energy of device and the control of scanning galvanometer deflected trajectory.
Preferably, the pulse width of described ultrafast laser is less than 15ps, described repetition rate is more than 5kHz.
Preferably, described beam expanding lens includes short focus concavees lens and long-focus convex lenss, described long-focus convex lenss are put
Put after short focus concavees lens.
Preferably, described short focus concavees lens and described long-focus convex lenss are confocal placement, and the ratio of its focal length is
Beam-expanding system expand multiple.
Preferably, described scanning galvanometer includes two servomotor motors and respective drive plates, real by control system
Its control to laser trace existing.
Preferably, described beam focusing lens include short focus convex lenss and long-focus concavees lens, described focal length
It is placed on after short focus concavees lens away from convex lenss.
Preferably, described short focus convex lenss and described long-focus concavees lens are confocal placements, and the ratio of its focal length is
The multiple that condenser lenses reduce.
Preferably, described beam focusing lens are F-theta lens, laser beam focuses on glass and sapphire by it
Internal.
The present invention compared with prior art has the advantages that：
1st, the present invention adopts ultrafast laser compared to nanosecond laser, and ultrafast laser has less pulse width
(1ns=1000ps, 1ps=1000fs) and higher peak power (peak power=energy/pulse width), to glass and indigo plant
Damage within gem is less, is not easy in glass and sapphire Internal explosions during carrying out Quick Response Code generation, permissible
Realize smaller size of Quick Response Code processing, glass and sapphire outward appearance and original intensity will not be impacted simultaneously.
2nd, the present invention is by being arranged on the front portion of scanning galvanometer so that the generation of Quick Response Code adopts dot matrix way by beam expanding lens,
Generate Quick Response Code size be less than 1mm, and existing laser to glass and sapphire labelling Quick Response Code when, typically adopt nanosecond
Green glow is marked, within carving mode Quick Response Code is marked at material internal, using interior carving mode, because the difference of laser peak
Different, explosion can be produced thus miniature sizes Quick Response Code cannot be generated in material internal.
Brief description
Fig. 1 is the structure of the device being internally generated micro two-dimensional code in glass and sapphire provided in an embodiment of the present invention
Figure；
Shown in figure：1st, ultrafast laser, 2, beam expanding lens, 3, scanning galvanometer, 4, beam focusing lens, 5, control system.
Specific embodiment
In order that the purpose of inventive embodiments, technical scheme and advantage are clearer, below in conjunction with the embodiment of the present invention
In technical scheme do not carry out clear, complete description it is clear that described embodiment is the section Example of the present invention, and not
It is whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art are not paying the premise of creative work
Lower obtained every other embodiment, broadly falls into protection scope of the present invention.
As shown in figure 1, the present embodiment provides a kind of device being internally generated micro two-dimensional code in glass and sapphire, including
Ultrafast laser 1, beam expanding lens 2, scanning galvanometer 3, beam focusing lens 4 and control system 5, described ultrafast laser 1 sends
Laser beam sequentially passes through beam expanding lens 2, scanning galvanometer 3 and beam focusing lens 4, and ultrafast laser 1 is sent by described beam expanding lens 2
Laser beam is sent out and is become directional light, and described directional light changes the track of light by scanning galvanometer 3, eventually passes beam focusing lens
4 image in inside the glass that need to identify and sapphire, and described control system 5 is electrical with ultrafast laser 1 and scanning galvanometer 3 respectively
Connect, control system 5 is realized the energy of ultrafast laser 1 and the control of scanning galvanometer 3 deflected trajectory are completed by the signal of telecommunication
The processing of Quick Response Code.Described control system 5 mainly includes USB control card and PC.
Described USB control card is that one kind adopts usb bus, connects PC dedicated for the output state of laser, energy
The board being controlled with track, it becomes master slave control structure with PC：PC is responsible for the management of man machine interface and other pipe
Science and engineering makees (as the input of keyboard and mouse, figure shows, network communication etc.), and USB control card is responsible for motor control aspect
All details (as pulse output, Straight Line and Arc interpolation, laser trace monitoring etc.).By software by 2 D code information with dot matrix
Mode generates, and controls scanning galvanometer 3 by USB card, and then controls laser trace to complete Quick Response Code inside glass and sapphire
Processing.Described ultrafast laser 1 adopts laser light pulse width in the industrialization laser instrument of psec or femtosecond magnitude.
Using ultrafast laser 1, this, as the preferred structure of the present embodiment, it is advantageous that pulse width is little, peak value is high,
Big explosion will not be formed in glass and sapphire, be conducive to processing smaller size of Quick Response Code, super described in the present embodiment
The pulse width of fast laser instrument is less than 15ps, and described repetition rate is more than 5kHz.
As the preferred structure of the present embodiment, described beam expanding lens 2 includes short focus concavees lens and long-focus convex lenss, described
Long-focus convex lenss are placed on after short focus concavees lens, and the short concavees lens of focal length are placed in the light path close to laser instrument,
The convex lenss of focal length length are in the light path away from laser instrument.According to design function, two in beam-expanding system piece lens should be confocal
Place, the ratio of long-focus and short focus, the ratio that timely laser beam amplifies, keep the distance between two lens constant, Ke Yibao
Card laser beam is directional light after beam-expanding system.
Described scanning galvanometer 3 includes two servomotor motors and respective drive plates, realizes it to sharp by control system 5
The control of light track, after beam expanding lens 2, hot spot expands, and by the servomotor X in scanning galvanometer, Y is transmitted lens
Focus on, adjust sapphire height up and down, make the focal position after laser focusing carry out the processing of Quick Response Code inside sapphire.
As the preferred structure of the present embodiment, described beam focusing lens 4 include short focus convex lenss and a long-focus
Concavees lens, described long-focus convex lenss are placed on after short focus concavees lens, described short focus convex lenss and described long-focus
Concavees lens are confocal placements, and the multiple that the ratio of its focal length reduces for condenser lenses.Laser beam is through beam focusing lens 4 laser
Size needed for system for bundle size reduction optical element below matches.Described beam focusing lens 4 are that F-theta is saturating
Mirror, laser beam is focused on inside glass and sapphire by it.Laser beam passes through this lens, can be formed in whole focussing plane
The focal beam spot of micron order size, makes as matter is consistent in whole image planes, and aberration is little, no vignetting exists, and improves the one of mark
Cause property.
The invention of this reality is processed less than 1x1mm size Quick Response Code by the way of dot matrix, Quick Response Code can be hidden in indigo plant
In gem, sapphire outward appearance and intensity itself will not be impacted, be suitable for being widely used in chasing after of protective cover of electronic product plate
Trace back.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Including ultrafast laser, expansion
Shu Jing, scanning galvanometer, beam focusing lens and control system, the laser beam that described ultrafast laser sends sequentially passes through and expands
Mirror, scanning galvanometer and beam focusing lens, the laser beam that ultrafast laser sends is sent out and is become directional light by described beam expanding lens, described
Directional light changes the track of light by scanning galvanometer, eventually passes beam focusing lens and images in the glass that need to identify and indigo plant treasured
Inside stone, described control system is electrically connected with ultrafast laser and scanning galvanometer respectively, and control system is realized by the signal of telecommunication
Energy to ultrafast laser and the control of scanning galvanometer deflected trajectory.
2. according to claim 1 glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Institute
The pulse width stating ultrafast laser is less than 15ps, and described repetition rate is more than 5kHz.
3. it is internally generated the device of micro two-dimensional code according to claim 1 in glass and sapphire using ultrafast laser, its
It is characterised by：Described beam expanding lens includes short focus concavees lens and long-focus convex lenss, and described long-focus convex lenss are placed on short focus
After concavees lens.
4. according to claim 3 glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Institute
Stating short focus concavees lens and described long-focus convex lenss is confocal placement, and the ratio of its focal length be beam-expanding system expand multiple.
5. according to claim 1 glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Institute
State scanning galvanometer and include two servomotor motors and respective drive plates, its control to laser trace is realized by control system
System.
6. according to claim 1 glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Institute
State beam focusing lens and include short focus convex lenss and long-focus concavees lens, described long-focus convex lenss are placed on short focus
After concavees lens.
7. according to claim 6 glass and sapphire be internally generated micro two-dimensional code device it is characterised in that：Institute
Stating short focus convex lenss with described long-focus concavees lens is confocal placement, and the multiple that the ratio of its focal length reduces for condenser lenses.
8. the device being internally generated micro two-dimensional code in glass and sapphire according to any one of claim 1 to 7, it is special
Levy and be：Described beam focusing lens are F-theta lens, and laser beam is focused on inside glass and sapphire by it.
Priority Applications (1)
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| CN201610784953.0A CN106378532A (en) | 2016-08-31 | 2016-08-31 | Device for generating micro-type two-dimensional code inside glass and sapphire |
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| CN201610784953.0A CN106378532A (en) | 2016-08-31 | 2016-08-31 | Device for generating micro-type two-dimensional code inside glass and sapphire |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081970A (en) * | 2017-05-16 | 2017-08-22 | 大族激光科技产业集团股份有限公司 | The method and apparatus of invisible two-dimensional codes is marked in metal material surface using laser |
| CN108465939A (en) * | 2018-02-09 | 2018-08-31 | 深圳市华星光电半导体显示技术有限公司 | Laser etching device and its laser ablation method |
| CN110018565A (en) * | 2019-03-19 | 2019-07-16 | 北京工业大学 | A kind of method and apparatus improving ultrafast laser light beam focusing capability |
| CN110202279A (en) * | 2019-07-16 | 2019-09-06 | 大族激光科技产业集团股份有限公司 | A kind of anti-fake processing method and system of glass substrate |
| CN110727042A (en) * | 2019-09-30 | 2020-01-24 | 江苏大学 | Device and method for preparing grating by ultrafast laser direct writing |
| CN110756998A (en) * | 2019-09-25 | 2020-02-07 | 大族激光科技产业集团股份有限公司 | Method for laser marking on surface of product |
| CN111716025A (en) * | 2019-03-19 | 2020-09-29 | 柯马杜股份有限公司 | Method for marking a sapphire watch mirror |
| CN112025087A (en) * | 2020-07-31 | 2020-12-04 | 武汉华工激光工程有限责任公司 | Sapphire laser marking process method |
| CN112692435A (en) * | 2019-10-23 | 2021-04-23 | 大族激光科技产业集团股份有限公司 | Ultrafast laser-based ground glass inner miniature two-dimensional code inner carving method and system |
| CN113548812A (en) * | 2021-06-01 | 2021-10-26 | 北海市龙浩光电科技有限公司 | Tracing method of glass cover plate |
| CN113977093A (en) * | 2021-10-15 | 2022-01-28 | 江苏华工激光科技有限公司 | Method for endowing black codes and white codes on surface of toughened glass based on ultrafast laser |
| WO2022141808A1 (en) * | 2020-12-31 | 2022-07-07 | 武汉华工激光工程有限责任公司 | Method and system for processing and reading qr code inside transparent material |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081970B (en) * | 2017-05-16 | 2019-09-20 | 大族激光科技产业集团股份有限公司 | The method and apparatus of invisible two-dimensional codes is marked in metal material surface using laser |
| CN107081970A (en) * | 2017-05-16 | 2017-08-22 | 大族激光科技产业集团股份有限公司 | The method and apparatus of invisible two-dimensional codes is marked in metal material surface using laser |
| CN108465939B (en) * | 2018-02-09 | 2020-10-27 | 深圳市华星光电半导体显示技术有限公司 | Laser etching device and laser etching method thereof |
| CN108465939A (en) * | 2018-02-09 | 2018-08-31 | 深圳市华星光电半导体显示技术有限公司 | Laser etching device and its laser ablation method |
| CN110018565A (en) * | 2019-03-19 | 2019-07-16 | 北京工业大学 | A kind of method and apparatus improving ultrafast laser light beam focusing capability |
| US11320790B2 (en) | 2019-03-19 | 2022-05-03 | Comadur Sa | Method for marking a sapphire watch crystal |
| CN111716025A (en) * | 2019-03-19 | 2020-09-29 | 柯马杜股份有限公司 | Method for marking a sapphire watch mirror |
| CN110202279A (en) * | 2019-07-16 | 2019-09-06 | 大族激光科技产业集团股份有限公司 | A kind of anti-fake processing method and system of glass substrate |
| CN110756998A (en) * | 2019-09-25 | 2020-02-07 | 大族激光科技产业集团股份有限公司 | Method for laser marking on surface of product |
| CN110727042A (en) * | 2019-09-30 | 2020-01-24 | 江苏大学 | Device and method for preparing grating by ultrafast laser direct writing |
| CN112692435A (en) * | 2019-10-23 | 2021-04-23 | 大族激光科技产业集团股份有限公司 | Ultrafast laser-based ground glass inner miniature two-dimensional code inner carving method and system |
| CN112025087A (en) * | 2020-07-31 | 2020-12-04 | 武汉华工激光工程有限责任公司 | Sapphire laser marking process method |
| WO2022141808A1 (en) * | 2020-12-31 | 2022-07-07 | 武汉华工激光工程有限责任公司 | Method and system for processing and reading qr code inside transparent material |
| CN113548812A (en) * | 2021-06-01 | 2021-10-26 | 北海市龙浩光电科技有限公司 | Tracing method of glass cover plate |
| CN113977093A (en) * | 2021-10-15 | 2022-01-28 | 江苏华工激光科技有限公司 | Method for endowing black codes and white codes on surface of toughened glass based on ultrafast laser |
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