CN107971639A - The device of laser-marking Quick Response Code based on LCD space light modulator - Google Patents
The device of laser-marking Quick Response Code based on LCD space light modulator Download PDFInfo
- Publication number
- CN107971639A CN107971639A CN201711470095.3A CN201711470095A CN107971639A CN 107971639 A CN107971639 A CN 107971639A CN 201711470095 A CN201711470095 A CN 201711470095A CN 107971639 A CN107971639 A CN 107971639A
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- Prior art keywords
- laser
- lens
- focus
- quick response
- response code
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- 230000004044 response Effects 0.000 title claims abstract description 35
- 238000010330 laser marking Methods 0.000 title claims abstract description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- 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
Abstract
The device of laser-marking Quick Response Code based on LCD space light modulator, it is characterised in that：It includes laser (1), the polarizer (2), short focus concavees lens (3) and long-focus convex lens (4), LCD space light modulator (5), computer (6), short focus convex lens (7), long-focus concavees lens (8), f-theta lens (9)；This laser high-speed identifies the device of Quick Response Code, and the mark of a Quick Response Code can be completed within the Millisecond time.
Description
Technical field
The invention belongs to technical field of laser processing, is exactly specifically to be related to a kind of swashing based on LCD space light modulator
Cursor knows the device of Quick Response Code.
Background technology
The direct thing mark tracing technology of article is that machine readable 2 D code information is directly marked to record on article, is traced back for article
Automatic mark and the information system management technology, and the technology such as RFID (radio frequency identification) of source control become Internet of Things skill together
The important support technology that art is applied in manufacturing industry.Recently as Quick Response Code in itself with recognition technology and laser technology hair
Exhibition, the Quick Response Code generated by the fine labelling technique of laser obtain more and more as the main information carrier that article body identifies
Accreditation, be with a wide range of applications in fields such as automobile, aerospace, electronics, medicine and military projects, be DPMT (direct things
Mark is traced to the source) the following important development trend of technology.Laser two-dimensional code book body is identified has essential distinction with traditional laser marking, after
The mark or sequence number that person only visually sees, and laser two-dimensional code mark then contains abundant Item Information, is
The data file of one specification.Different from traditional bar code, Quick Response Code printed label, the Quick Response Code mark of laser generation can be with
Ensure that article mark stands intact in product manufacturing, circulation and the whole life cycle that uses, can be by code reader or mobile terminal
Directly intelligence reads Quick Response Code mark (data file) information, each, which is identified thing identity, has uniqueness, so as to be product
Manufacturing process management, trace to the source, be false proof, supervision mark provides effectively efficiently identification means.
Existing method and legacy system based on laser-marking Quick Response Code are all to use speed positioning system for high, such as galvanometer
(galvanometer) scanning system, is identified by vector scanning mode and grid amount scan mode.When mark size is less than 2*2cm2
Micro two-dimensional code when, vector scanning mode loses function, most of to use grid amount scan modes.One is identified by this way
When resolution ratio is the Quick Response Code of 1024*768 pixels, pulse identifies a pixel, it is necessary to vibration mirror scanning 786432 times.Although
The speed and performance of galvanometer with advances in technology, are greatly improved, but are quickly identified with this serial processing mode
Quick Response Code is still a huge challenge, identifies the time of a Quick Response Code all in second level；Another laser-mask mark side
Formula belongs to parallel processing manner, can once complete the mark of Quick Response Code, have the advantages that it is fireballing, identify Quick Response Code when
Between in Millisecond；But this kind of technology needs the mask of pre-production Quick Response Code, cost of manufacture is high, very flexible, is not suitable for existing
Generationization pipelining occasion.
The content of the invention
The purpose of the present invention is aiming at the laser galvanometer scanning technology identification speed of existing serial process is slow and laser
Mask identification technology can not realize the shortcomings that computer programmable control, very flexible, there is provided a kind of parallel processing, can calculate
The device and method of the laser high-speed mark Quick Response Code of machine programming Control, can complete the mark of a Quick Response Code within the Millisecond time
Know.
Technical solution
In order to realize above-mentioned technical purpose, the laser-marking Quick Response Code based on LCD space light modulator that the present invention designs
Device, it is characterised in that：It includes laser, the polarizer, short focus concavees lens and long-focus convex lens, liquid crystal spatial light tune
Device processed, computer, short focus convex lens, long-focus concavees lens, f-theta lens；
The laser beam that the laser is sent is injected on the outgoing pipeline of the polarizer polarizer and short focus concavees lens is housed, short
Long-focus convex lens is housed on the emitting light path of focal length concavees lens, liquid crystal spatial light is housed on the emitting light path of long-focus convex lens
Modulator, LCD space light modulator are connected with computer, short focus are housed on the LCD space light modulator outgoing pipeline
Convex lens, short focus convex lens emitting light path on fill long-focus concavees lens, equipped with flat on the emitting light path of long-focus concavees lens
Field condenser lens.
Further, the laser is the laser of visible wavelength, and the laser pulse width of laser swashs from nanosecond to femtosecond
Light mean power is more than or equal to 14 watts, and repetition rate is 20 kHz until 300 kHz；
Further, the half-wave plate of the polarizer is corresponding with laser output light wavelength.
Further, the confocal placement of the short focus concavees lens and long-focus convex lens.
Further, the confocal placement of the short focus convex lens and long-focus concavees lens.
Further, the f-theta lens are F-theta lens.
Beneficial effect
A kind of parallel processing provided by the invention, can computer programming control laser high-speed mark Quick Response Code dress
Put, the mark of a Quick Response Code can be completed within the Millisecond time.
Brief description of the drawings
Attached drawing 1 is the structure diagram that the present invention is embodiment.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in Figure 1,
The device of laser-marking Quick Response Code based on LCD space light modulator, it is characterised in that：It include laser 1,
The polarizer 2, short focus concavees lens 3 and long-focus convex lens 4, LCD space light modulator 5, computer 6, short focus convex lens 7,
Long-focus concavees lens 8, f-theta lens 9；
The laser beam that the laser 1 is sent injects the polarizer 2, and it is recessed that short focus is housed on the outgoing pipeline of the polarizer 2
Mirror 3, is equipped with long-focus convex lens 4 on the emitting light path of short focus concavees lens 3, is equipped with the emitting light path of long-focus convex lens 4
LCD space light modulator 5, liquid crystal spatial light modulation 5 are connected with computer, and the LCD space light modulator 5 is emitted on pipeline
Equipped with short focus convex lens 7, short focus convex lens 7 emitting light path on fill long-focus concavees lens 8, long-focus concavees lens 8 go out
Penetrate and f-theta lens 9 are housed in light path.
The laser 1 is the laser of visible wavelength, and for the laser pulse width of laser from nanosecond to femtosecond, laser is average
Power is more than or equal to 14 watts, and repetition rate is 20 kHz until 300 kHz；
2 half-wave plate of the polarizer is corresponding with laser output light wavelength.
The 4 confocal placement of short focus concavees lens 3 and long-focus convex lens.
The 8 confocal placement of short focus convex lens 7 and long-focus concavees lens.
The f-theta lens 9 are F-theta lens.
By laser beam, the polarizer, beam-expanding system, LCD space light modulator, focussed collimated system, flat field in the present embodiment
Condenser lens should keep optical system coaxial, avoid laser beam from shifting in transmitting procedure, cause system effectiveness to drop
It is low；According to the needs of Functional Design, Quick Response Code is generated the image of Software Create, phase is obtained according to algorithm routine by computer
Figure, is then input to the control unit of LCD space light modulator by data cable, and control unit presses look-up table by phase gray scale
Image is converted into the phase value in each pixel of spatial light modulator.Different Quick Response Codes need to only adjust liquid crystal spatial light modulation
The phase value in each pixel on device, neatly realizes the Quick Response Code mark of computer programmable control；The present embodiment uses
Technology based on liquid crystal spatial optics modulator laser-marking Quick Response Code, it is possible to achieve computer programmable controls, with parallel side
Formula carries out laser high-speed mark Quick Response Code, considerably reduces process time, largely improves the utilization rate of laser.
The retrospect demand of inexpensive and large batch of product can be achieved, technique is simple, and uniformity is good, and is suitable for automated production；
Structure, ratio, size, quantity depicted in institute of embodiment of the present invention accompanying drawings etc., only coordinating specification
Revealed content, so that those skilled in the art understands and reads, is not limited to the enforceable restriction bar of the present invention
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, are not influencing
Under the effect of present invention can be generated and the purpose that can reach, it should all still fall and obtain and can contain in disclosed technology contents
In the range of lid.It is meanwhile cited such as " on ", " under ", "left", "right", " centre ", " clockwise ", " inverse time in this specification
The term of pin " etc., is merely convenient to understanding for narration, and is not used to limit the enforceable scope of the present invention, its relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Claims (6)
1. the device of the laser-marking Quick Response Code based on LCD space light modulator, it is characterised in that：It include laser (1),
The polarizer (2), short focus concavees lens (3) and long-focus convex lens (4), LCD space light modulator (5), computer (6), short focus
Away from convex lens (7), long-focus concavees lens (8), f-theta lens (9)；
The laser beam that the laser (1) sends injects the polarizer (2), and it is recessed that short focus is housed on the outgoing pipeline of the polarizer (2)
Lens (3), are equipped with long-focus convex lens (4), the outgoing of long-focus convex lens (4) on the emitting light path of short focus concavees lens (3)
LCD space light modulator (5) is housed, liquid crystal spatial light modulation (5) is connected with computer (), the liquid crystal spatial light in light path
Dress long-focus on the emitting light path of short focus convex lens (7), short focus convex lens (7) is housed recessed on modulator (5) outgoing pipeline
Lens (8), are equipped with f-theta lens (9) on the emitting light path of long-focus concavees lens (8).
2. the device of the laser-marking Quick Response Code based on LCD space light modulator as claimed in claim 1, it is characterised in that：
The laser (1) is the laser of visible wavelength, and for the laser pulse width of laser from nanosecond to femtosecond, average laser power is big
In equal to 14 watts, repetition rate is 20 kHz until 300 kHz.
3. the device of the laser-marking Quick Response Code based on LCD space light modulator as claimed in claim 1, it is characterised in that：
The half-wave plate of (2) of the polarizer is corresponding with laser output light wavelength.
4. the device of the laser-marking Quick Response Code based on LCD space light modulator as claimed in claim 1, it is characterised in that：
The short focus concavees lens (3) and long-focus convex lens (4) confocal placement.
5. the device of the laser-marking Quick Response Code based on LCD space light modulator as claimed in claim 1, it is characterised in that：
The short focus convex lens (7) and long-focus concavees lens (8) confocal placement.
6. the device of the laser-marking Quick Response Code based on LCD space light modulator as claimed in claim 1, it is characterised in that：
The f-theta lens (9) are F-theta lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470095.3A CN107971639A (en) | 2017-12-29 | 2017-12-29 | The device of laser-marking Quick Response Code based on LCD space light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470095.3A CN107971639A (en) | 2017-12-29 | 2017-12-29 | The device of laser-marking Quick Response Code based on LCD space light modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107971639A true CN107971639A (en) | 2018-05-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711470095.3A Pending CN107971639A (en) | 2017-12-29 | 2017-12-29 | The device of laser-marking Quick Response Code based on LCD space light modulator |
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| CN (1) | CN107971639A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496531A (en) * | 2020-11-24 | 2021-03-16 | 中国科学院西安光学精密机械研究所 | Integrated femtosecond laser marking method and system based on space shaping |
Citations (5)
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|---|---|---|---|---|
| WO2010142737A1 (en) * | 2009-06-10 | 2010-12-16 | Easy Laser, S. L. | Laser image projection system applicable to the marking of objects and method for generating holograms |
| CN102896421A (en) * | 2012-07-30 | 2013-01-30 | 沈明亚 | LCOS (liquid crystal on silicon) laser micromachining system and laser micromachining method |
| CN102967999A (en) * | 2012-11-07 | 2013-03-13 | 深圳大学反光材料厂 | Interference lithography system and method based on spatial light modulator |
| CN104118220A (en) * | 2014-03-28 | 2014-10-29 | 上海飞涅尔激光科技有限公司 | Two-dimensional code laser marking method and device based on liquid crystal spatial light modulator |
| CN208374480U (en) * | 2017-12-29 | 2019-01-15 | 上海市激光技术研究所 | The device of laser-marking two dimensional code based on LCD space light modulator |
-
2017
- 2017-12-29 CN CN201711470095.3A patent/CN107971639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142737A1 (en) * | 2009-06-10 | 2010-12-16 | Easy Laser, S. L. | Laser image projection system applicable to the marking of objects and method for generating holograms |
| CN102896421A (en) * | 2012-07-30 | 2013-01-30 | 沈明亚 | LCOS (liquid crystal on silicon) laser micromachining system and laser micromachining method |
| CN102967999A (en) * | 2012-11-07 | 2013-03-13 | 深圳大学反光材料厂 | Interference lithography system and method based on spatial light modulator |
| CN104118220A (en) * | 2014-03-28 | 2014-10-29 | 上海飞涅尔激光科技有限公司 | Two-dimensional code laser marking method and device based on liquid crystal spatial light modulator |
| CN208374480U (en) * | 2017-12-29 | 2019-01-15 | 上海市激光技术研究所 | The device of laser-marking two dimensional code based on LCD space light modulator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496531A (en) * | 2020-11-24 | 2021-03-16 | 中国科学院西安光学精密机械研究所 | Integrated femtosecond laser marking method and system based on space shaping |
| CN112496531B (en) * | 2020-11-24 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | Integrated femtosecond laser marking method based on space shaping |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200233 No. 770, Xuhui District, Shanghai, Yishan Road Applicant after: Shanghai Laser Technology Research Institute Co.,Ltd. Address before: 200233 No. 770, Xuhui District, Shanghai, Yishan Road Applicant before: Shanghai Institute of Laser Technology |
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| CB02 | Change of applicant information |