CN113036581A - Laser with adjustable light source precision - Google Patents
Laser with adjustable light source precision Download PDFInfo
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- CN113036581A CN113036581A CN202110311427.3A CN202110311427A CN113036581A CN 113036581 A CN113036581 A CN 113036581A CN 202110311427 A CN202110311427 A CN 202110311427A CN 113036581 A CN113036581 A CN 113036581A
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- laser
- zoom lens
- light source
- adjustable light
- channel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/0014—Monitoring arrangements not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
Abstract
The invention provides a laser with adjustable light source precision, which comprises: the laser unit is respectively arranged on the left side and the right side of the laser unit, and the electron microscope and the calibration displacement sensor are coaxially arranged with the laser unit; the laser unit is inside to be equipped with laser channel along the axial, just laser channel runs through laser unit's one end along axial direction to installing the mirror that shakes and setting up in the field lens in the mirror outside of shaking in the department of running through, be equipped with the zoom lens in the laser channel, the zoom lens can be adjusted along the axial in laser channel, the periphery of zoom lens is equipped with the loose collar, the loose collar meets and constitutes sliding connection with the laser channel inner wall mutually, the radial both ends of zoom lens are fixed mutually with the loose collar and constitute relative rotation and be connected. The laser with the adjustable light source precision can flexibly adjust light spots emitted by the laser, realize better zooming and focusing, reduce the wavelength emitted by the laser and really realize cold processing.
Description
Technical Field
The invention relates to the technical field of laser, in particular to a laser with an adjustable light source precision.
Background
Laser is a new light source in the 60's of the 20 th century, and has the characteristics of good directivity, high brightness, good monochromaticity, high energy density and the like. The laser industry based on lasers is rapidly developing in the world and is now widely used in industrial production, communication, information processing, medical health, military, cultural education, scientific research and other fields. Statistically, the annual and laser-related products and services have a market value of up to billions of dollars, from high-end optical fibers to common barcode scanners.
The prospect of development prospect and transformation upgrade analysis report of the laser industry of China, published by the industry research institute of prospect, shows that the laser industry forms complete and mature industrial chain distribution. The upstream mainly comprises laser materials and matched components, the midstream mainly comprises various lasers and matched equipment thereof, and the downstream mainly comprises laser application products, consumer products and instrument equipment.
At present, the domestic laser market is mainly divided into laser processing equipment, optical communication devices and equipment, laser measuring equipment, lasers, laser medical equipment, laser components and the like, and the products are mainly applied to the industrial processing and optical communication markets, and the products occupy the market space of nearly 7.
With the progress of laser technology, the laser industry in China must be rapidly developed, in five years in the future, the laser market in China is developed at a speed of about 20% under the drive of related industries, and in 2015, laser application fields in China form a laser industry group taking laser processing, laser communication, laser medical treatment, laser display, laser holography and the like as industries, so that the development prospect of the industry is good. The laser processing technology is a technology for cutting, welding, surface processing, punching, micromachining materials (including metals and non-metals) by utilizing the interaction characteristic of laser beams and substances, and serving as a light source and identifying objects, and the laser processing technology is the most widely applied field in the traditional technology. Laser marking: the laser is widely applied to various materials and almost all industries, and the currently used lasers include a YAG laser, a CO2 laser and a semiconductor pump laser. The existing laser equipment cannot efficiently adjust and focus on light spots.
In view of the above, there is a need for an improved laser in the prior art to solve the above problems.
Disclosure of Invention
The invention aims to disclose a laser with adjustable light source precision, which can flexibly adjust light spots emitted by the laser, realize better zooming and focusing and reduce the wavelength emitted by the laser.
In order to achieve the above object, the present invention provides a laser with adjustable light source precision, including: the laser unit is respectively arranged on the left side and the right side of the laser unit, and the electron microscope and the calibration displacement sensor are coaxially arranged with the laser unit;
the laser unit is inside to be equipped with laser channel along the axial, just laser channel runs through laser unit's one end along axial direction to installing the mirror that shakes and setting up in the field lens in the mirror outside of shaking in the department of running through, be equipped with the zoom lens in the laser channel, the zoom lens can be adjusted along the axial in laser channel, the periphery of zoom lens is equipped with the loose collar, the loose collar meets and constitutes sliding connection with the laser channel inner wall mutually, the radial both ends of zoom lens are fixed mutually with the loose collar and constitute relative rotation and be connected.
As a further improvement of the invention, the outer edge of the zoom lens is provided with a plurality of magnetic contacts, the movable ring is provided with a magnetic switch, and the zoom lens and the movable ring are magnetically connected and rotate relatively.
As a further improvement of the invention, the center of the zoom lens is located on the same center line as the light beam emitted by the laser unit.
As a further improvement of the invention, the zoom lens adopts a convex lens or an aspherical mirror.
As a further improvement of the invention, a beam expanding lens is also arranged between the zoom lens and the galvanometer.
As a further improvement of the invention, the laser channel is a cylindrical cavity.
As a further improvement of the invention, the angle of relative rotation between the zoom lens and the movable ring is 0-45 degrees.
As a further improvement of the invention, the nonlinear crystal and the single crystal are respectively arranged in the laser unit, and the laser wavelength generated in the laser unit sequentially passes through the nonlinear crystal and the single crystal to reach 532nm and 355 nm.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the deflection and the axial displacement of the zoom lens, the size of a light spot can be adjusted, the effect of focus offset is finally achieved, the working distance is compared with physical adjustment, the high-quality effect can be obtained more conveniently and efficiently, and laser processing errors caused by changes of the irradiation position and the size of characters are avoided.
(2) The online vision can be ensured through the external electron microscope, the processing quality of the laser processing piece can be effectively and timely observed, and the calibration displacement sensor can track and calibrate the relative position of the laser and the laser processing piece.
(3) The beam expander can make the focusing effect better, obtains littleer focus facula, makes the energy homodisperse that the laser instrument sent simultaneously, can enlarge the light beam simultaneously again.
(4) The basic wavelength of 1064nm is converted into 532nm by a nonlinear crystal and then into 355nm by another single crystal, and the imprinting process can be performed without generating thermal stress. Has high absorption rate to various materials.
Drawings
Fig. 1 is a schematic structural diagram of a laser with adjustable light source precision according to the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Fig. 1 shows a specific embodiment of a laser with adjustable light source precision according to the present invention.
A laser with adjustable light source precision, comprising: the laser unit is internally provided with a laser emitting device, the front end of the laser unit is also provided with a laser irradiation warning lamp for observing whether the emitting power of the laser is stable or not so as to estimate the working state of the laser, the laser is internally provided with a thermoelectric power monitor, and the thermoelectric power monitor is marked and matched in the laser, so that the most important output management in the maintenance of the laser engraving machine can be easily, reliably and quickly executed, the output power of the laser is accurately mastered by measuring heat, and the precision measurement is improved. The electron microscope and the calibration displacement sensor are respectively arranged on the left side and the right side of the laser unit and are coaxially arranged with the laser unit; the online vision can be ensured through the external electron microscope, the processing quality of the laser processing piece can be effectively and timely observed, and the calibration displacement sensor can track and calibrate the relative position of the laser and the laser processing piece. The laser unit is inside to be equipped with laser channel along the axial, and the energy that laser channel supplied the laser instrument transmission passes through and arrives laser unit's outside, laser channel runs through laser unit's one end along axial direction to install the mirror that shakes and set up in the field lens that shakes the mirror outside at the department of running through, be equipped with the varifocal lens in the laser channel, the varifocal lens can be adjusted along the axial in laser channel, the periphery of varifocal lens is equipped with the loose collar, the loose collar meets and constitutes sliding connection with the laser channel inner wall mutually, the radial both ends of varifocal lens are fixed mutually with the loose collar and constitute relative rotation and be connected.
Specifically, the outer edge of the zoom lens is provided with a plurality of magnetic contacts, the movable ring is provided with a magnetic attraction switch, and the zoom lens and the movable ring are connected through magnetism and rotate relatively. Through the deflection and the axial displacement of the zoom lens, the size of a light spot can be adjusted, the effect of focus offset is finally achieved, the working distance is compared with physical adjustment, the high-quality effect can be obtained more conveniently and efficiently, and laser processing errors caused by changes of the irradiation position and the size of characters are avoided. The zoom lens is driven by the movable ring to axially adjust in the laser channel 10, the working position of the zoom lens is changed, so that the quality and the focusing position of light spots are changed, the magnetic connection point is arranged at the outer edge of the zoom lens, and the included angle formed between the zoom lens and the movable ring is controlled by the magnetic attraction switch of the movable ring, so that the light spots are deviated, and the quality of the light spots is changed. The center of the zoom lens is positioned on the same central line with the light beam emitted by the laser unit.
The laser channel is a cylindrical cavity. The movable ring is the ring form, constitutes sliding connection with laser channel, and the movable ring passes through external motor drive, the varifocal mirror adopts convex lens or aspheric surface mirror, and convex lens and aspheric surface mirror can play the effect of fine spotlight, still be equipped with the beam expanding lens between varifocal mirror and the mirror that shakes. The beam expander can make the focusing effect better, obtains littleer focus facula, makes the energy homodisperse that the laser instrument sent simultaneously, can enlarge the light beam simultaneously again. The angle of relative rotation between the zoom lens and the movable ring is 0-45 degrees. In order to ensure that the focusing quality can be used for processing, the included angle between the zoom lens and the movable ring needs to be 0-45 degrees, if the included angle is too large, the energy can not be normally focused,
the laser unit is internally provided with a nonlinear crystal and a single crystal respectively, and the laser wavelength generated in the laser unit sequentially passes through the nonlinear crystal and the single crystal to reach 532nm and 355 nm. The laser converts the basic wavelength of 1064nm into the wavelength of 532nm through the nonlinear crystal, and then converts the basic wavelength into the wavelength of 355nm through another single crystal, and can perform imprinting processing under the condition of not generating thermal stress. Has high absorption rate to various materials.
The built-in view finder of laser instrument and three scanner, the view finder is multi-functional camera, through built-in multi-functional camera, can measure the focus, read the two-dimensional code, confirm the stamp mark position, continuously keep high stamp mark quality, still can confirm the quality after the stamp mark, coaxial arrangement avoids producing photographic error and need not to take place the switching work when changing the variety, help reducing man-hour by a wide margin, simplified equipment, improve production efficiency, through set up three ascending scanners of axial in the laser instrument, can monitor the removal of laser instrument, and the change of the position and the position of accurate positioning laser focus, realize the stamp mark and the high accuracy stamp mark on a large scale of three-dimensional shape, still can measure focus autofocus through built-in camera, can avoid the stamp mark that focus skew leads to bad.
The laser source equipped by the device reduces the light spot by secondary development and beam expansion, can make up the defect of thick light spots of two foreign countries, and solves the problems that texture superposition is caused in some narrow areas due to the constraint of thick light spots in the processing process of products, corners and corners cannot be finely processed, the fuzzy and unclear texture is influenced, and the like.
The laser with the adjustable light source precision disclosed by the invention can flexibly adjust light spots generated by the laser, realize better zooming and focusing, reduce the wavelength of laser emission and really realize cold processing.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A laser with adjustable light source precision, comprising: the laser unit is respectively arranged on the left side and the right side of the laser unit, and the electron microscope and the calibration displacement sensor are coaxially arranged with the laser unit;
the laser unit is inside to be equipped with laser channel along the axial, just laser channel runs through laser unit's one end along axial direction to installing the mirror that shakes and setting up in the field lens in the mirror outside of shaking in the department of running through, be equipped with the zoom lens in the laser channel, the zoom lens can be adjusted along the axial in laser channel, the periphery of zoom lens is equipped with the loose collar, the loose collar meets and constitutes sliding connection with the laser channel inner wall mutually, the radial both ends of zoom lens are fixed mutually with the loose collar and constitute relative rotation and be connected.
2. The laser with the adjustable light source precision as claimed in claim 1, wherein the outer edge of the zoom lens is provided with a plurality of magnetic contacts, the movable ring is provided with a magnetic switch, and the zoom lens and the movable ring are magnetically connected and rotate relatively.
3. The laser with the adjustable light source precision as claimed in claim 2, wherein the center of the zoom lens is located on the same center line as the light beam emitted by the laser unit.
4. The laser with the adjustable light source precision as claimed in claim 1, wherein the zoom lens is a convex lens or an aspherical mirror.
5. The laser with the adjustable light source precision as claimed in claim 1, wherein a beam expanding lens is further disposed between the zoom lens and the galvanometer.
6. The laser with the adjustable light source precision as claimed in claim 1, wherein the laser channel is a cylindrical cavity.
7. The laser with the adjustable light source precision as recited in claim 1, wherein the angle of relative rotation between the zoom lens and the movable ring is between 0 ° and 45 °.
8. The laser with the adjustable light source precision as claimed in claim 1, wherein the laser unit is internally provided with a nonlinear crystal and a single crystal respectively, and the laser wavelength generated in the laser unit sequentially passes through the nonlinear crystal and the single crystal to reach 532nm and 355 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110311427.3A CN113036581A (en) | 2021-03-24 | 2021-03-24 | Laser with adjustable light source precision |
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| CN202110311427.3A CN113036581A (en) | 2021-03-24 | 2021-03-24 | Laser with adjustable light source precision |
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| CN113036581A true CN113036581A (en) | 2021-06-25 |
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