CN113241579A

CN113241579A - Universal laser light source module

Info

Publication number: CN113241579A
Application number: CN202110557707.2A
Authority: CN
Inventors: 张普; 贺永贵; 朱香平; 韦永林; 豆晨曦
Original assignee: Guangdong Guangdong Hong Kong Macao Dawan District Hard Science And Technology Innovation Research Institute
Current assignee: Guangdong Guangdong Hong Kong Macao Dawan District Hard Science And Technology Innovation Research Institute
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-08-10

Abstract

The present disclosure relates to a universal laser light source module. The general laser light source module includes: a housing; the laser device is characterized in that a collimating lens, an optical isolator, a vibrating mirror, a field lens and a reflector are sequentially arranged on the rear side of the laser device along the advancing direction of laser beams; wherein, the laser instrument the collimating lens optical isolator with the mirror that shakes is fixed in the shell, field lens detachably sets up in the shell, the speculum is rotatable to be set up in the shell. According to the technical scheme, the outer surface cleaning and the inner wall surface cleaning of the workpiece to be cleaned are achieved by using the universal laser light source module, the outer surface cleaning and the inner wall surface cleaning are achieved, the cleaning cost is reduced, the structural size of the laser light source module is greatly reduced, and the laser cleaning head is suitable for cleaning of small holes.

Description

Universal laser light source module

Technical Field

The present disclosure relates to the field of electronics, and more particularly, to a universal laser light source module.

Background

The drive cleaning industry has a variety of cleaning modes, which can be summarized into chemical cleaning modes and mechanical cleaning modes. However, with the increasing enhancement of environmental protection and safety awareness of people, the requirement of China on industrial environmental protection is higher, and the types of chemicals which can be used in a chemical agent cleaning mode are less and less under the condition of meeting the environmental protection requirement; the mechanical cleaning mode is contact cleaning, the surface of the cleaned object is mechanically affected, the surface layer of the cleaned object is easily damaged, secondary pollution is easily caused, metal dust generated by contact cleaning is easily sucked by workers, and the physical health of the workers is affected. The laser cleaning has the advantages of no grinding, no contact, no thermal effect, suitability for cleaning the surfaces of objects made of various materials, wide application, and the most reliable and effective cleaning mode at present, but in the laser cleaning process, the laser cleaning equipment cannot be used for cleaning the inner wall and the surface of a workpiece with an inner hole, or only can be used for cleaning the outer surface, or can be used for cleaning the inner wall, and cannot be used for the common purpose.

The invention discloses a laser cleaning mechanism for the inner wall of a pipeline, which comprises a base, a focusing device, a rotating device and a reflecting lens group, wherein the base is coupled with a fiber isolator connected with a laser light source in an inner cavity, the focusing device is installed at the front end of the base, the rotating device is installed at the front end of the focusing device through a motor base, and the reflecting lens group is fixedly connected with the rotating device. But it is mainly directed at hole cleaning, when to the surface cleaning, it is inconvenient to use. In order to solve the problems, the invention provides a universal laser light source module which can be used for cleaning the inner wall and the outer surface.

Disclosure of Invention

The embodiment of the disclosure provides a universal laser light source module. The technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, there is provided a general laser light source module, including:

a housing;

the laser device is characterized in that a collimating lens, an optical isolator, a vibrating mirror, a field lens and a reflector are sequentially arranged on the rear side of the laser device along the advancing direction of laser beams;

wherein, the laser instrument the collimating lens optical isolator with the mirror that shakes is fixed in the shell, field lens detachably sets up in the shell, the speculum is rotatable to be set up in the shell.

In one embodiment, the universal laser light source module further comprises:

and the diffraction homogenizing device or the refraction homogenizing device is fixed in the shell, positioned between the optical isolator and the field lens and used for shaping the laser beam reaching the diffraction homogenizing device or the refraction homogenizing device to form a flat-top beam.

In one embodiment, the diffractive homogenizer device or refractive homogenizer device is located between the optical isolator and the galvanometer.

In one embodiment, further comprising:

and the rotating bracket is connected with the reflector and is used for driving the reflector to rotate when the reflector is forced to move.

In one embodiment, further comprising:

and the motor is connected with the rotating bracket and used for driving the rotating bracket to move to drive the reflector to rotate to a preset angle.

In one embodiment, the optical isolator comprises an 1/4 slide.

In one embodiment, further comprising:

the air blowing device is used for realizing positive pressure air blowing or negative pressure air blowing;

and one end of the air guide pipe is communicated with the opening in the shell, and the other end of the air guide pipe is communicated with the air blowing device, and the opening in the shell is positioned behind the field lens in the advancing direction of the laser beam.

In one embodiment, the laser comprises a fiber laser or a solid state laser;

the optical fiber laser comprises a laser generator, a laser processing unit and a laser processing unit, wherein the laser generator is used for generating laser; and the energy transmission optical fiber is connected with the laser generator and is used for outputting the laser emitted by the laser generator.

In one embodiment, a high transmittance film is disposed on the field lens.

In one embodiment, a high reflectivity film is disposed on the mirror.

The embodiment can realize the cleaning of the outer surface and the cleaning of the inner wall surface of the workpiece to be cleaned by using one universal laser light source module through adjusting the reflection angle of the reflector, realizes the universality of the cleaning of the outer surface and the cleaning of the inner wall, and reduces the cleaning cost. In addition, this embodiment can all set up laser instrument and optoisolator in this shell, fixes the protection through unified shell, does not need the structure of other outside fixed protections to fix the protection, great reduction general laser light source module's structure size to make this general laser light source module adapt to the washing in less hole.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram illustrating an external structure of a general laser light source module according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating an internal structure of a general laser light source module according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating an internal structure of a general laser light source module according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating an internal structure of a general laser light source module according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating incoherent irradiance of laser light emitted by a generic laser light source module according to an exemplary embodiment.

Fig. 6 is a schematic structural diagram of a general laser light source module according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The present disclosure provides a general laser light source module, fig. 1 is an external structure schematic diagram of a general laser light source module according to an exemplary embodiment, and fig. 2 is an internal structure schematic diagram of a general laser light source module according to an exemplary embodiment.

As shown in fig. 1, the general laser light source module includes a housing 11, and the structure inside the housing 11 is as shown in fig. 2, including: the laser device 12 is provided with a collimating lens 13, an optical isolator 14, a vibrating mirror 15, a field lens 16 and a reflecting mirror 17 in sequence along the advancing direction of laser beams on the rear side of the laser device 12; wherein, laser 12, collimating lens 13, optical isolator 14 and galvanometer 15 are fixed in shell 11, field lens 16 detachably sets up in shell 11, reflector 17 rotatable setting in shell 11.

Here, as shown in fig. 2, the laser 12 is used to emit a high-power laser beam; the laser beam irradiates on a collimating lens 13, and the collimating lens 13 is used for collimating the laser beam into a parallel laser beam; the collimated laser beam impinges on an optical isolator 14, the optical isolator 14 being an optically passive device that allows light to pass in one direction only and blocks light from passing in the opposite direction, the optical isolator 14 being used to protect the laser 12 from damage by the reflected beam; the laser beam from the optical isolator 14 is irradiated on the galvanometer 15, the galvanometer 15 operates by making the laser beam incident on two mirrors (scanning mirrors), controlling the reflection angles of the mirrors to make the two mirrors scan along the X, Y axis respectively, so as to make the laser beam form a certain shape, and the galvanometer 15 is used for vibrating the laser beam into a certain shaped laser beam; a laser beam with a certain shape is irradiated on a field lens 16, and the field lens 16 is used for focusing the laser beam and improving the energy of the laser beam; the field lens 16 in this embodiment is detachably disposed in the housing 11, and the field lens 16 with different focal lengths can be replaced according to actual cleaning conditions to scan different areas and adapt to different working distances. The laser beam focused by the field lens 16 irradiates on the reflecting mirror 17, and is reflected by the reflecting mirror 17 to the workpiece 18A to be cleaned at the corresponding position, and the impurities on the surface of the workpiece 18A to be cleaned are subjected to laser cleaning.

The reflector 17 in this embodiment is rotatably connected to the housing 11, so that the reflector 17 can be rotated to different positions, and the laser beam focused by the field lens 16 can be reflected to different directions, thereby realizing surface cleaning of workpieces in different directions. When the inner wall of the workpiece to be cleaned is cleaned, the universal laser light source module can extend into the pipeline of the workpiece to be cleaned, the reflector 17 can rotate to form an angle of 45 degrees with the parallel direction as shown in fig. 2, so that the laser beams in the parallel direction can be reflected into the laser beams vertical to the parallel direction, and the cleaning of the inner wall of the workpiece to be cleaned can be realized by the laser beams in the direction. For example, fig. 3 is a schematic diagram illustrating an internal structure of a general laser light source module according to an exemplary embodiment. As shown in fig. 3, when cleaning the outer surface of the workpiece to be cleaned, the reflector 17 can be rotated to be parallel to the parallel direction according to the rotation direction shown by the arrow AA ^ in fig. 3, and after the reflector 17 is rotated to be parallel to the parallel direction as shown in fig. 3, the laser beams in the parallel direction can be directly emitted in parallel without passing through the reflector 17, and the outer surface of the workpiece 18B to be cleaned is cleaned. Of course, if the inner wall of the workpiece to be cleaned has a special shape, the reflector 17 can be correspondingly adjusted to rotate to a corresponding angle according to the special shape, and the laser beam is reflected to the special-shaped surface for cleaning, where it should be noted that the rotation angle of the reflector 17 is greater than or equal to 45 degrees, so that the cleaning in each direction can be adapted.

The embodiment can realize the cleaning of the outer surface and the cleaning of the inner wall surface of the workpiece to be cleaned by using one universal laser light source module through adjusting the reflection angle of the reflector 17, thereby realizing the universal cleaning of the outer surface and the inner wall and reducing the cleaning cost. In addition, this embodiment can all set up laser instrument 12 and optical isolator 14 in this shell 11, fixes the protection through unified shell 11, does not need the structure of other outside fixed protections to fix the protection, great reduction the structure size of general laser light source module to make this general laser light source module adapt to the washing in less hole.

In one possible embodiment, fig. 4 is a schematic diagram illustrating an internal structure of a general laser light source module according to an exemplary embodiment. As shown in fig. 4, the general laser light source module further includes: and the diffraction homogenizing device or the refraction homogenizing device 19 is fixed in the shell 11 and positioned between the optical isolator 14 and the field lens 16 and is used for shaping the laser beam reaching the diffraction homogenizing device or the refraction homogenizing device 19 to form a flat-top beam.

Here, the diffraction homogenizer or refraction homogenizer 19 may be located between the optical isolator 14 and the vibrating mirror 15 as shown in fig. 4, but of course, in other embodiments, the diffraction homogenizer or refraction homogenizer may also be located between the vibrating mirror 15 and the field lens 16. The diffraction homogenizing device or the refraction homogenizing device can shape the laser beam reaching the diffraction homogenizing device or the refraction homogenizing device to form a flat-top beam, so that the beam irradiated on the workpiece to be cleaned by the laser emitted by the general laser source module is the flat-top beam, the damage threshold of laser cleaning is reduced, the workpiece to be cleaned is not easy to damage, the application range of the general laser source module can be expanded, and the laser cleaning homogenizing device or the refraction homogenizing device is applied to the high-precision fields such as the solar field, the military research field and the aerospace field with lower requirements on the damage threshold of laser cleaning.

In one possible embodiment, preferably, as shown in FIG. 4, the diffraction or refraction homogenizer device 19 is located between the optical isolator 14 and the galvanometer mirror 15, which allows the common laser light source module to form the best flat-top beam with minimal damage to the workpiece to be cleaned.

For example, fig. 5 is a schematic diagram illustrating the incoherent irradiance of the laser light emitted from a general laser light source module according to an exemplary embodiment, the shape of the laser beam formed by the vibrating mirror 15 is circular, and after a diffraction homogenizing device or a refraction homogenizing device is disposed between the optical isolator 14 and the vibrating mirror 15 of the general laser light source module, the incoherent irradiance of the laser light on a diameter in the circular laser light beam emitted from the general laser light source module is tested to obtain the exemplary diagram shown in fig. 5, as shown in fig. 5, the X-axis mark uses a circular point as an origin 0, and the distance from each laser point to the origin 0 is in mm; the Y-axis is the incoherent irradiance of each laser point at different distances on the diameter, and as can be seen from fig. 5, the incoherent irradiance of each laser point on the diameter fluctuates in a small region, which indicates that the energy distribution of the laser output by the universal laser light source module is relatively uniform, so that when the universal laser light source module provided by this embodiment is used, precise cleaning of the workpiece to be cleaned can be achieved, and the damage to the workpiece to be cleaned is minimal.

In a possible embodiment, the universal laser light source module further comprises: and the rotating bracket is connected with the reflector 17 and is used for driving the reflector 17 to rotate when the reflector is moved under a force.

For example, the rotating bracket may be a handle moving up and down, the rotating bracket may be connected to the upper end of the reflector 17, and when the rotating bracket moves up, the rotating bracket may drive the upper end of the reflector 17 to move up, and the lower end of the reflector 17 is fixed, so that the reflector 17 may be rotated to the angle shown in fig. 2. Then, when the rotating bracket can move downward, the upper end of the reflector 17 can be driven to move downward, and the lower end of the reflector 17 is fixed, so that the reflector 17 can be rotated to the parallel state as shown in fig. 3. Of course, only one implementation of the rotating bracket is illustrated here, and the rotating bracket may be another structure capable of driving the reflector 17, which is not illustrated here.

Here, the rotating bracket may be moved by manual driving or electric driving, and is not limited herein.

In a possible embodiment, the universal laser light source module further includes a motor connected to the rotating bracket, and configured to drive the rotating bracket to move to drive the reflecting mirror 17 to rotate to a preset angle.

Therefore, the motor can be controlled by the controller to drive the rotating support to move, so that the reflector 17 is driven to rotate to a preset angle, the outer surface and the inner wall of the workpiece can be cleaned by the universal laser light source module, and the universal laser light source module can be automatically cleaned.

In one possible embodiment, the optical isolator 14 comprises an 1/4 slide, and using the 1/4 slide as the optical isolator 14 can greatly reduce the overall dimensional length.

In a possible embodiment, fig. 6 is a schematic structural diagram of a general laser light source module according to an exemplary embodiment, and as shown in fig. 6, the general laser light source module further includes a blower 21 and an air duct 22, where the blower 21 is used to implement positive pressure blowing or negative pressure blowing; the air duct 22 has one end communicating with the opening of the housing 11 and one end communicating with the blower 21, and the opening of the housing 11 is located behind the field lens 16 in the traveling direction of the laser beam. When the reflector 17 and the field lens 16 need to be radiated and protected, the air blowing device 21 can be controlled to realize positive pressure air blowing, and air is blown into the general laser light source module through the air guide pipe 22; when the dust and the oil smoke need to be cleaned and collected and cleaned, the air blowing device 21 can be controlled to realize negative pressure air blowing, and the dust and the oil smoke in the universal laser light source module are sucked out through the air guide pipe 22, so that green pollution-free laser cleaning is realized. Here, the blowing device 21 is often used to realize negative pressure blowing.

In a possible embodiment, the laser 12 comprises a fiber laser 12 or a solid state laser 12; as shown in fig. 6, the fiber laser includes a laser generator 121 for generating laser light; and an energy transmission optical fiber 122 connected to the laser generator 121 and configured to output laser light generated by the laser generator 121.

Preferably, the laser 12 is a fiber laser 12, which is less costly. Here, when the fiber laser 12 is used, since the energy transmission fiber is thin, in order to protect the energy transmission fiber, some protection fixing structures are provided in the prior art to protect the energy transmission fiber, which results in a large structural volume of the fiber laser 12, and in the present application, the fiber laser 12 is provided in the housing 11, and the energy transmission fiber is protected and fixed by the housing 11, which reduces the volume of the universal laser light source module.

In a possible embodiment, the field lens 16 is provided with a high-transmittance film, so that the maximum utilization rate of light energy is realized, and the field lens 16 can be protected from being damaged.

In a possible embodiment, said mirror 17 is provided with a high reflectivity film, thus enabling a lossless transmission of light energy and enabling the mirror 17 to be protected from damage.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A universal laser light source module, comprising:

a housing;

2. The universal laser light source module as claimed in claim 1, further comprising:

3. The universal laser light source module as claimed in claim 2, wherein the diffraction homogenizing device or refraction homogenizing device is located between the optical isolator and the galvanometer.

4. The universal laser light source module as claimed in claim 1, further comprising:

5. The universal laser light source module according to claim 4, further comprising:

6. The universal laser light source module according to claim 1,

the optical isolator includes 1/4 slides.

7. The universal laser light source module as claimed in claim 1, further comprising:

8. The universal laser light source module according to claim 1,

the laser comprises a fiber laser or a solid laser;

9. The universal laser light source module according to claim 1,

and a high-transmittance film is arranged on the field lens.

10. The universal laser light source module according to claim 1,

a high reflectivity film is disposed on the reflector.