CN110864677B - Square profile laser marking method and device based on optical reflection and refraction - Google Patents
Square profile laser marking method and device based on optical reflection and refraction Download PDFInfo
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- CN110864677B CN110864677B CN201911219728.2A CN201911219728A CN110864677B CN 110864677 B CN110864677 B CN 110864677B CN 201911219728 A CN201911219728 A CN 201911219728A CN 110864677 B CN110864677 B CN 110864677B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0977—Reflective elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention relates to a square profile laser marking method and a device based on optical reflection and refraction, belonging to the technical field of laser pattern generation equipment, in particular to a method and a device for laser marking of a square profile, which comprises a dotted line laser conversion module, a line laser alignment module and a line laser amplification module, wherein the three functional modules are used for respectively converting point laser into divergent line laser, quasi-linear laser and amplified line laser, and finally realizing the function of adjusting the point laser into a square laser pattern.
Description
Technical Field
The invention belongs to the technical field of laser pattern generation equipment, and particularly relates to a method and a device for laser marking of a square outline.
Background
In production life, there are multiple work occasions to carry out laser marking to square profile, if the tunnelling in-process in the rectangle tunnel does not carry out accurate marking to the profile and carries out the cutting operation by the subjective judgement of entry driving machine driver, often can cause the phenomenon such as the undercut is owed to the overexcavation, and tunnel shaping quality is low and dangerous accident takes place easily.
The invention provides a roadway tunneling and widening device and an operation method thereof (patent number CN105806256A), wherein the roadway tunneling and widening device is mainly composed of a rectangular main body frame and a plurality of widening laser tubes, and can realize the function of widening a roadway with a rectangular outline, but the device has a complex structure and a plurality of widening laser tubes, each laser tube can only emit one point of laser, the device cost is extremely high, the marked square outline is not a continuous laser line, but an approximately rectangular dot matrix pattern formed by a plurality of points emitted by a plurality of point light sources is high, and the outline marking effect is not obvious.
Researchers of the science and technology company limited for the offshore mining equipment on the sky have proposed a roadway profile generating device (patent number CN103835724A), which mainly comprises a light and shadow generator and a distance measuring device, and can irradiate the roadway profile to the end of the roadway by using a multi-point laser mode to form a visible roadway profile light spot, thereby realizing the function of roadway width display. However, the device only emits light spots instead of discontinuous curves, a plurality of light-emitting components are required to emit a plurality of points, the identification effect is not as good as that of continuous laser lines, the structure is complex, the cost is high, and the outline marking effect is not obvious.
In the technology of changing point laser of a single laser source into square line laser at present, a grating engraving method can realize the function of changing points into square patterns, but the requirement on grating engraving processing precision is high, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of laser multipoint emission, poor recognition effect and complex and various devices in the prior art, overcome the defects of high processing precision and high cost required when a grating method is used for converting point laser into square laser, and convert the point laser into a square laser pattern in a low-cost mode by utilizing the principles of reflection and refraction in optics. Therefore, the invention provides a square profile laser marking method and device based on optical reflection and refraction.
The square profile laser marking method and device based on optical reflection and refraction are characterized in that: the method and the device can realize that the single-point laser is adjusted into a square laser pattern through the designed light path, and the device comprises three functional modules which are respectively as follows: the device comprises a point line laser conversion module, a line laser collimation module and a line laser amplification module; the point-line laser conversion module consists of a laser generating device, a conical reflector, a square reflector frame and a reflector lens in sequence; the line laser collimation module consists of a square convex lens column support frame and a convex lens column; the line laser amplification module consists of a circular double-sided amplification convex lens.
The method and the device for adjusting the point laser into the amplified square laser pattern specifically comprise the following steps:
the method comprises the following steps: the spot laser is converted into four divergent line lasers: in the point-line laser conversion module, the laser generating device emits point-like laser, the point-like laser is reflected by the conical reflector to form a circle of continuous line laser which is dispersed to the periphery along a vertical plane, the continuous line laser irradiates on the square reflector frame, the laser is reflected again when being incident on the four reflectors at the central part of the square reflector frame, and four continuous line lasers are formed after being emitted, so that the function of point-line laser conversion is realized;
step two: the divergent line laser is converted into a quasi-linear laser: in the line laser collimation module, incident light is four divergent line lasers which are respectively incident on four convex lens columns arranged on the square convex lens column supporting frame, and the four convex lens columns are refracted to become four collimated line lasers.
Step three: four quasi-linear lasers are magnified to square patterns: in the line laser amplification module, four line laser after collimation are incident to on the circular two-sided magnification convex lens, through its refraction, after being greater than the distance of focus, two upper and lower laser lines alternately exchange the position, and two left and right laser lines alternately exchange the position, realize the magnification function of line laser, and the distance is bigger more than the magnification of long-range shape pattern.
Further, in the point-line laser conversion module, the laser generating device is connected with the conical surface reflector through threads, an included angle between a conical generatrix of the conical surface reflector and a conical bottom surface of the conical surface reflector is 45 degrees, the center of a light outlet of the laser generating device is over against a conical top of the conical surface reflector, the emitted laser is emitted to the conical surface reflector and reflected on the surface of the conical surface reflector, and both an incident angle and a reflection angle are 45 degrees.
Furthermore, in the point-line laser conversion module, the square reflector frame and the reflector are connected at the central part through an inner groove in an interference fit manner or an adhesion manner, the number of the reflectors is four, the upper part, the lower part, the left part and the right part are total, and when laser reflected by the conical reflector is incident on the reflector, the incident angle and the reflection angle are both 45 degrees.
Furthermore, in the dotted line laser conversion module, the laser generating device and the conical reflector are combined into a whole, the square reflector frame and the reflector are combined into a whole, and the two whole bodies are installed by interference fit of the outer diameter of the laser generating device and the inner hole of the square reflector frame.
Further, in the line laser collimation module, the square convex lens column support frame and the convex lens column are connected at the central part through an inner groove interference fit or an adhesion mode, and the convex lens column is divided into four columns in total, namely an upper column, a lower column, a left column and a right column.
Further, in the line laser collimation module, the installation distance between the optical center of the convex lens column and the square reflector frame in the dotted line laser conversion module should be equal to the difference between the focal length of the convex lens column and half of the side length of the square reflector frame, so as to ensure that the laser starts from the cone top of the conical reflector, the distance from the optical center of the convex lens column is the focal length of the convex lens column, and the four divergent line lasers are converted into four quasi-linear lasers.
Further, in the line laser collimation module, the square convex lens column support frame, the square reflector frame in the dotted line laser conversion module, the laser generating device, and the circular double-sided magnifying convex lens in the line laser magnifying module should be concentric, that is, the geometric centers of the respective portions should be located on the same straight line, which is the straight line where the advancing direction of the initial point laser is located.
Compared with the prior square profile laser marking technology, the invention has the beneficial effects that:
(1) the invention utilizes three functional modules to respectively convert the point laser into the divergent line laser, the quasi-linear laser and the amplified line laser, finally realizes the function of adjusting the point laser into a square laser pattern, solves the defects of various devices and difficult recognition during multi-point laser emission, and improves the marking precision of the roadway profile.
(2) The invention overcomes the defects of high cost and difficult processing when the existing grating technology is adopted to realize the square profile laser marking, overcomes the defects of poor multi-point laser emission effect and high cost, and realizes the conversion from the point laser to the square laser pattern in a mode of lower cost and simpler principle.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the components of the apparatus and the modules thereof.
Wherein, in fig. 1:
1: point-line laser conversion module 2: line laser alignment module
3: line laser amplification module 4: laser generator
5: conical surface reflector 6: square reflector frame
7: the reflection mirror 8: square convex lens column support frame
9: convex lens column 10: round double-sided magnifying convex lens
Detailed Description
The following describes in further detail specific embodiments of the present invention with reference to the accompanying drawings.
In fig. 1, the overall arrangement of the square profile laser marking device based on optical reflection and refraction is shown, and as can be seen from the figure, from right to left, the device comprises three functional modules: the device comprises a point line laser conversion module 1, a line laser collimation module 2 and a line laser amplification module 3.
The point-line laser conversion module 1 is composed of a laser generating device 4, a conical reflector 5, a square reflector frame 6 and a reflector 7 in sequence.
The line laser collimation module 2 consists of a square convex lens column support frame 8 and a convex lens column 9.
The line laser amplification module 3 consists of a circular double-sided amplification convex lens 10.
The method and the device for adjusting the point laser into the amplified square laser pattern mainly comprise the following three steps:
the method comprises the following steps: the spot laser is converted into four divergent line lasers: in the point-line laser conversion module 1, a laser generating device 4 emits point-like laser, the point-like laser is reflected by a conical reflector 5 to form a circle of continuous line laser which is diffused to the periphery along a vertical plane, the continuous line laser irradiates a square reflector frame 6, the laser is reflected again when being incident on four reflecting lenses 7 at the central part of the square reflector frame 6, four continuous line lasers are formed after being emitted, and the function of point-line laser conversion is realized;
step two: the divergent line laser is converted into a quasi-linear laser: in the line laser collimation module 2, the incident light is four divergent line lasers, and the incident light is respectively incident on four convex lens columns 9 arranged on a square convex lens column support frame 8, and is refracted in the convex lens columns 9 to become four collimated line lasers.
Step three: four quasi-linear lasers are magnified to square patterns: in the line laser amplification module 3, four collimated line lasers are incident on the circular double-sided amplification convex lens 10, after the line lasers are refracted by the circular double-sided amplification convex lens, after the distances larger than the focal length, the positions of the upper laser line and the lower laser line are crossed and exchanged, and the positions of the left laser line and the right laser line are crossed and exchanged, so that the amplification function of the line lasers is realized, and the amplification factor of the pattern is larger when the distance is farther.
In the method and the device, in the point-line laser conversion module 1, a laser generating device 4 is connected with a conical reflector 5 through threads, the included angle between a conical generatrix of the conical reflector 5 and the conical bottom surface of the conical reflector is 45 degrees, the center of a light outlet of the laser generating device 4 is over against the conical top of the conical reflector 5, the emitted laser is emitted to the conical reflector 5 and reflected on the surface of the conical reflector, and the incident angle and the reflection angle are both 45 degrees.
According to the method and the device, in the point-line laser conversion module 1, a square reflector frame 6 and a reflector 7 are connected at the central part in an interference fit or adhesion mode through an inner groove, the reflector 7 is divided into four parts, namely an upper part, a lower part, a left part and a right part, and when laser reflected by a conical reflector 5 is incident on the reflector 7, the incident angle and the reflection angle are both 45 degrees.
According to the method and the device, in the dotted line laser conversion module 1, a laser generating device 4 and a conical reflector 5 are combined into a whole, a square reflector frame 6 and a reflector 7 are combined into a whole, and the two whole bodies are installed through interference fit of the outer diameter of the laser generating device 4 and an inner hole of the square reflector frame 6.
According to the method and the device, in the linear laser collimation module 2, a square convex lens column support frame 8 and a convex lens column 9 are connected at the middle part in an interference fit or adhesion mode through an inner groove, and the convex lens columns 9 are divided into four columns in total, namely an upper column, a lower column, a left column and a right column.
For the method and the device, in the line laser collimation module 2, the installation distance between the optical center of the convex lens column 9 and the square reflector frame 6 in the dotted line laser conversion module 1 is equal to the difference value between the focal length of the convex lens column 9 and half of the side length of the square reflector frame 6, so as to ensure that the laser starts from the cone top of the conical reflector 5, the distance reaching the optical center of the convex lens column 9 is the focal length of the convex lens column 9, and the four divergent line lasers are converted into the four quasi-linear lasers.
For the method and the device, in the line laser collimation module 2, the square convex lens column support frame 8, the square reflector frame 6 in the point-line laser conversion module 1, the laser generating device 4 and the circular double-sided amplifying convex lens 10 in the line laser amplification module 3 are concentric, that is, the geometric centers of all parts are positioned on the same straight line, and the straight line is the straight line in which the advancing direction of the initial point laser is positioned.
Claims (5)
1. The square profile laser marking method based on optical reflection and refraction is characterized in that: the method can realize that the single dot-shaped laser is adjusted into a square laser pattern through the designed light path, and comprises three functional modules which are respectively as follows: the device comprises a point line laser conversion module, a line laser collimation module and a line laser amplification module; the point-line laser conversion module consists of a laser generating device, a conical reflector, a square reflector frame and a reflector lens in sequence; the line laser collimation module consists of a square convex lens column support frame and a convex lens column; the line laser amplification module consists of a circular double-sided amplification convex lens;
the method for adjusting the point laser into the amplified square laser pattern comprises the following specific steps:
the method comprises the following steps: the spot laser is converted into four divergent line lasers: in the point-line laser conversion module, a laser generating device emits point-like laser, the point-like laser is reflected by a conical reflector to form a circle of continuous line laser which is dispersed to the periphery along a vertical plane, the continuous line laser irradiates on a square reflector frame, the laser is reflected again when being incident on four reflectors at the central part of the square reflector frame, and four continuous line lasers are formed after being emitted, so that the function of point-line laser conversion is realized;
step two: the divergent line laser is converted into a quasi-linear laser: in the linear laser collimation module, incident light is four divergent linear lasers which are respectively incident on four convex lens columns arranged on a square convex lens column support frame, and are refracted in the convex lens columns to become four collimated linear lasers;
step three: four quasi-linear lasers are magnified to square patterns: in the line laser amplification module, four collimated line lasers are incident on a circular double-sided amplification convex lens, after the line lasers are refracted by the circular double-sided amplification convex lens, the positions of an upper laser line and a lower laser line are crossed and exchanged after the line lasers are refracted by the circular double-sided amplification convex lens, the positions of the upper laser line and the lower laser line are crossed and exchanged, the positions of the left laser line and the right laser line are crossed and exchanged, the amplification function of the line lasers is realized, and the amplification factor of the pattern is larger;
in the point-line laser conversion module, a laser generating device is connected with a conical reflector through threads, an included angle between a conical bus of the conical reflector and the conical bottom surface of the conical reflector is 45 degrees, the center of a light outlet of the laser generating device is over against the conical top of the conical reflector, emitted laser is emitted to the conical reflector and reflected on the surface of the conical reflector, and the incident angle and the reflection angle are both 45 degrees; the square reflector frame and the reflector are connected at the central part in an interference fit or adhesion mode through inner grooves, the number of the reflectors is four, the upper part is the lower part, the left part is the right part, the total number of the reflectors is four, and when laser reflected by the conical reflector is incident on the reflectors, the incident angle and the reflecting angle are both 45 degrees.
2. The optical reflection and refraction-based square-profile laser marking method of claim 1, wherein: in the dotted line laser conversion module, a laser generating device and a conical reflector are combined into a whole, a square reflector frame and a reflector are combined into a whole, and the two whole bodies are installed through interference fit of the outer diameter of the laser generating device and an inner hole of the square reflector frame.
3. The optical reflection and refraction-based square-profile laser marking method of claim 1, wherein: in the line laser collimation module, a square convex lens column supporting frame and a convex lens column are connected at the middle part in an interference fit or adhesion mode through an inner groove, and the convex lens column is divided into four columns in total, namely an upper column, a lower column, a left column and a right column.
4. The optical reflection and refraction-based square-profile laser marking method of claim 1, wherein: in the line laser collimation module, the installation distance between the optical center of the convex lens column and the square reflector frame in the point-line laser conversion module is equal to the difference value between the focal length of the convex lens column and half of the side length of the square reflector frame, so that the distance from the conical top of the conical reflector to the optical center of the convex lens column is the focal length of the convex lens column, and four divergent line lasers are converted into four quasi-linear lasers.
5. The optical reflection and refraction-based square-profile laser marking method of claim 1, wherein: in the line laser collimation module, the square convex lens column support frame, the square reflector frame in the point-line laser conversion module, the laser generating device and the circular double-sided amplifying convex lens in the line laser amplification module are concentric, namely the geometric centers of all parts are positioned on the same straight line, and the straight line is the straight line where the advancing direction of the initial point laser is positioned.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911219728.2A CN110864677B (en) | 2019-12-03 | 2019-12-03 | Square profile laser marking method and device based on optical reflection and refraction |
| PCT/CN2020/097653 WO2021109548A1 (en) | 2019-12-03 | 2020-06-23 | Square-profile laser marking method and device based on optical reflection and refraction |
| ZA2022/05548A ZA202205548B (en) | 2019-12-03 | 2022-05-19 | Method and device for laser marking of square contours based on optical reflection and refraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911219728.2A CN110864677B (en) | 2019-12-03 | 2019-12-03 | Square profile laser marking method and device based on optical reflection and refraction |
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| Publication Number | Publication Date |
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| CN110864677A CN110864677A (en) | 2020-03-06 |
| CN110864677B true CN110864677B (en) | 2021-01-08 |
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| CN201911219728.2A Active CN110864677B (en) | 2019-12-03 | 2019-12-03 | Square profile laser marking method and device based on optical reflection and refraction |
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| Country | Link |
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| CN (1) | CN110864677B (en) |
| WO (1) | WO2021109548A1 (en) |
| ZA (1) | ZA202205548B (en) |
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| CN110864677B (en) * | 2019-12-03 | 2021-01-08 | 中国矿业大学(北京) | Square profile laser marking method and device based on optical reflection and refraction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4494874A (en) * | 1981-07-07 | 1985-01-22 | Robotic Vision Systems, Inc. | Detection of three-dimensional information using a projected point or line of light |
| JP2925084B1 (en) * | 1998-07-10 | 1999-07-26 | トーヨーテクノ株式会社 | Aperture laser line marker |
| EP1508397B1 (en) * | 2003-08-21 | 2006-06-07 | Leister Process Technologies | Method and apparatus for simultaneous heating of materials |
| JP4291844B2 (en) * | 2006-10-24 | 2009-07-08 | トーヨーテクノ株式会社 | Laser head for laser marking machine |
| US8284500B2 (en) * | 2009-06-08 | 2012-10-09 | Ayase Co., Ltd. | Laser line-generator and laser line-generator module |
| DE102011089557A1 (en) * | 2011-12-22 | 2013-06-27 | Hilti Aktiengesellschaft | Laser system for producing a linear laser marking |
| CN104515508A (en) * | 2013-09-30 | 2015-04-15 | 常州维尔曼光电仪器有限公司 | Four-directional cross line laser |
| CN103835724A (en) * | 2014-03-20 | 2014-06-04 | 天地上海采掘装备科技有限公司 | Roadway outline generation device |
| CN105691091A (en) * | 2014-09-23 | 2016-06-22 | 上海聚然智能科技有限公司 | Power generator and application thereof |
| CN206601533U (en) * | 2017-03-30 | 2017-10-31 | 青岛镭创光电技术有限公司 | Various dimensions indicate laser module and laser beam emitting device |
| CN107990847A (en) * | 2017-12-18 | 2018-05-04 | 中国矿业大学(北京) | A kind of digging laneway profile based on laser optical path adjustment indicates method and device |
| CN110220504A (en) * | 2019-07-09 | 2019-09-10 | 青岛镭创光电技术有限公司 | Reflecting element and straight line laser mould group |
| CN110389494A (en) * | 2019-07-23 | 2019-10-29 | 傲基科技股份有限公司 | The measuring method of laser aid and its laser projection pattern dimension |
| CN110864677B (en) * | 2019-12-03 | 2021-01-08 | 中国矿业大学(北京) | Square profile laser marking method and device based on optical reflection and refraction |
-
2019
- 2019-12-03 CN CN201911219728.2A patent/CN110864677B/en active Active
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2020
- 2020-06-23 WO PCT/CN2020/097653 patent/WO2021109548A1/en active Application Filing
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| Publication number | Publication date |
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| ZA202205548B (en) | 2022-06-29 |
| WO2021109548A1 (en) | 2021-06-10 |
| CN110864677A (en) | 2020-03-06 |
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