CN216387597U - Laser shaping module - Google Patents
Laser shaping module Download PDFInfo
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- CN216387597U CN216387597U CN202122590113.XU CN202122590113U CN216387597U CN 216387597 U CN216387597 U CN 216387597U CN 202122590113 U CN202122590113 U CN 202122590113U CN 216387597 U CN216387597 U CN 216387597U
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Abstract
The utility model discloses a laser shaping module, which comprises: the laser device comprises a semiconductor laser, a biconvex lens, a light homogenizing structure, a collimating structure, a beam expanding structure and a focusing structure which are sequentially arranged along a laser light path; the biconvex lens is used for coupling laser emitted by the semiconductor laser into the light uniformizing structure; the light homogenizing structure is used for shaping laser into flat-top light; the collimation structure is used for collimating the flat-topped light; the beam expanding structure is used for expanding and collimating the flat-top light; the focusing structure is used for focusing the flat-top light into line laser. Thus, in the utility model, the laser emitted by the semiconductor laser can be shaped into linear laser, the spot size at the focus position is small, the energy density is high, and the distribution is uniform.
Description
Technical Field
The utility model relates to the technical field of optics, in particular to a laser shaping module.
Background
The laser has the advantages of good monochromaticity, good directivity, good coherence and high brightness, and is widely applied to various fields of national economy.
In general, the energy of the laser beam output by the laser is approximately gaussian in spatial form, which is called gaussian distribution. However, the gaussian beam cannot meet some special requirements in practical applications, for example, in some practical applications, the energy of the laser beam output by the laser is required to be distributed in a specific manner in a spatial form, and the light spot is required to be distributed in a specific manner such as a circular form, a ring form, a square form, a linear form, a flat top form, and the like, so that the laser beam output by the laser needs to be shaped.
Therefore, it is an urgent problem to be solved by those skilled in the art how to design a laser shaping module.
SUMMERY OF THE UTILITY MODEL
The utility model provides a laser shaping module to solve the problems in the background art.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
the embodiment of the utility model provides a laser shaping module, which comprises: the laser device comprises a semiconductor laser, a biconvex lens, a light homogenizing structure, a collimating structure, a beam expanding structure and a focusing structure which are sequentially arranged along a laser light path;
the biconvex lens is used for coupling laser emitted by the semiconductor laser into the light uniformizing structure;
the light homogenizing structure is used for shaping laser into flat-top light;
the collimation structure is used for collimating the flat-topped light;
the beam expanding structure is used for expanding and collimating the flat-top light;
the focusing structure is used for focusing the flat-top light into line laser.
Optionally, in an embodiment of the present invention, the light uniformizing structure is a rectangular light guide tube.
Optionally, in an embodiment of the present invention, the collimating structure is a collimating mirror.
Optionally, in an embodiment of the present invention, the beam expanding structure comprises an input negative lens and an output positive lens in a virtual confocal configuration.
Optionally, in an embodiment of the present invention, the focusing structure is a cylindrical mirror.
Optionally, in an embodiment of the present invention, the semiconductor laser is configured as a single mode laser.
The utility model has the advantages and positive effects that:
laser emitted by the semiconductor laser is coupled into the rectangular light pipe through the double-convex lens, the laser is reflected in the rectangular light pipe for multiple times, wherein the rectangular light pipe shapes the laser into flat-top light and is incident on the collimating mirror, the collimating mirror performs primary collimation on the flat-top light, the collimated flat-top light is incident on the input negative lens and the output positive lens in sequence, the input negative lens and the output positive lens perform beam expansion on the flat-top light and perform secondary collimation on the flat-top light, the flat-top light is incident on the cylindrical mirror after beam expansion and collimation, the cylindrical mirror focuses on the flat-top light, and the focusing is linear laser.
Thus, in the utility model, the laser emitted by the semiconductor laser can be shaped into linear laser, the spot size at the focus position is small, the energy density is high, and the distribution is uniform.
Drawings
FIG. 1 is a light path diagram of a laser shaping module according to the present invention;
reference numerals:
1. a semiconductor laser; 2. a lenticular lens sheet; 3. a rectangular light pipe; 4. a collimating mirror; 5. inputting a negative lens; 6. an output positive lens; 7. cylindrical mirror.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiments of the utility model will be described in further detail below with reference to the accompanying drawings:
the laser shaping module provided by the utility model, as shown in fig. 1, comprises: the laser device comprises a semiconductor laser 1, a biconvex lens 2, a light homogenizing structure, a collimating structure, a beam expanding structure and a focusing structure which are sequentially arranged along a laser light path;
the biconvex lens 2 is used for coupling the laser emitted by the semiconductor laser 1 into the light homogenizing structure;
the light homogenizing structure is used for shaping laser into flat-top light;
the collimation structure is used for collimating the flat-topped light;
the beam expanding structure is used for expanding and collimating the flat-top light;
the focusing structure is used for focusing the flat-top light into line laser.
Thus, in the present invention, the laser light emitted from the semiconductor laser 1 can be shaped into line laser light, and the spot size at the focal position is small, the energy density is high, and the distribution is uniform.
Optionally, in the embodiment of the present invention, the light uniformizing structure is configured as a rectangular light guide pipe 3.
The number of times of laser reflection in the rectangular light guide pipe 3 is not less than 5, so that the uniformity of laser energy distribution is improved, and the uniformity can reach more than 90%.
Optionally, in the embodiment of the present invention, the collimating structure is a collimating mirror 4.
So, because the flat top light that dodging structure launches is diverged, and the beam expanding structure requires the flat top light of incidenting to be approximate collimated light, consequently, has set up a collimation structure between dodging structure and beam expanding structure, and wherein, collimation structure establishes to collimating mirror 4, and collimating mirror 4's aim at: and collimating the flat-top light emitted by the dodging system, and making the collimated flat-top light incident to the beam expanding structure.
At this time, it should be noted that, because the collimating lens 4 cannot completely collimate the flat top light, that is, after the flat top light is collimated by the collimating lens 4, a certain divergence angle still exists, and the beam expanding structure can not only expand the flat top light, but also further compress the divergence angle, and a smaller divergence angle is more beneficial to the focusing of the focusing structure.
Optionally, in an embodiment of the present invention, the beam expanding structure comprises an input negative lens 5 and an output positive lens 6 in a virtual confocal configuration.
Wherein, the beam expanding structure can be set as a 3-time Galileo beam expanding system, and the diameter of the flat-top light can be enlarged by 3 times.
Therefore, the divergence angle of the flat-top light can be optimized by arranging the beam expanding structure, namely, the divergence angle of the flat-top light is reduced, and the subsequent focusing structure is favorable for focusing.
Optionally, in the embodiment of the present invention, the focusing structure is a cylindrical mirror 7.
Therefore, the cylindrical mirror 7 can shape the flat top light into a line laser, the line width of the focal position can reach below 20um, and the laser energy density is improved.
Alternatively, in the embodiment of the present invention, the semiconductor laser 1 is configured as a single mode laser.
For the single-mode laser, the half-wave width is only 2nm, the chromatic aberration is small, and the shaping of a light path is facilitated.
The working principle and the working process of the utility model are as follows:
laser emitted by the semiconductor laser 1 is coupled into the rectangular light guide pipe 3 through the double-convex lens 2, the laser is reflected for multiple times in the rectangular light guide pipe 3, wherein the rectangular light guide pipe 3 shapes the laser into flat top light and is incident on the collimating lens 4, the collimating lens 4 performs primary collimation on the flat top light, the collimated flat top light is incident on the input negative lens 5 and the output positive lens 6 in sequence, wherein the input negative lens 5 and the output positive lens 6 expand the flat top light and perform secondary collimation on the flat top light, the flat top light is incident on the cylindrical lens 7 after expanding the beam and collimating, the cylindrical lens 7 focuses the flat top light, and the focusing is line laser.
Thus, in the present invention, the laser light emitted from the semiconductor laser 1 can be shaped into line laser light, and the spot size at the focal position is small, the energy density is high, and the distribution is uniform.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.
Claims (6)
1. A laser shaping module, comprising: the laser device comprises a semiconductor laser (1), a biconvex lens (2), a light homogenizing structure, a collimating structure, a beam expanding structure and a focusing structure which are sequentially arranged along a laser light path;
the biconvex lens (2) is used for coupling laser emitted by the semiconductor laser (1) into the light homogenizing structure;
the light homogenizing structure is used for shaping laser into flat-top light;
the collimation structure is used for collimating the flat-topped light;
the beam expanding structure is used for expanding and collimating the flat-top light;
the focusing structure is used for focusing the flat-top light into line laser.
2. The laser shaping module according to claim 1, wherein the light homogenizing structure is a rectangular light pipe (3).
3. A laser shaping module according to claim 2, wherein the collimating structure is provided as a collimating mirror (4).
4. A laser shaping module according to claim 3, wherein the beam expanding structure comprises an input negative lens (5) and an output positive lens (6) in a virtual confocal configuration.
5. A laser shaping module according to claim 3, wherein the focusing structure is provided as a cylindrical mirror (7).
6. A laser shaping module according to claim 5, characterized in that the semiconductor laser (1) is provided as a single mode laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122590113.XU CN216387597U (en) | 2021-10-26 | 2021-10-26 | Laser shaping module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122590113.XU CN216387597U (en) | 2021-10-26 | 2021-10-26 | Laser shaping module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216387597U true CN216387597U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122590113.XU Active CN216387597U (en) | 2021-10-26 | 2021-10-26 | Laser shaping module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216387597U (en) |
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2021
- 2021-10-26 CN CN202122590113.XU patent/CN216387597U/en active Active
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