CN214161745U - Double square-shaped light spot optical system used in laser welding - Google Patents
Double square-shaped light spot optical system used in laser welding Download PDFInfo
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- CN214161745U CN214161745U CN202022818243.XU CN202022818243U CN214161745U CN 214161745 U CN214161745 U CN 214161745U CN 202022818243 U CN202022818243 U CN 202022818243U CN 214161745 U CN214161745 U CN 214161745U
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Abstract
The utility model discloses a two square facula optical system for among laser welding, it includes collimating mirror, positive angle prism, cylindrical mirror, focusing mirror and the protective glass that sets up along the interval in proper order in the light path direction. The utility model discloses easily processing, can bear high power, each facula energy easily adjusts, the focus facula is approximate square, more is of value to realize that whole cost minimizing, structure volume account for the space little, the facula energy is adjustable.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a laser welding field especially relates to a two square facula optical system that appears for in laser welding.
[ background of the invention ]
Laser welding has been widely used in the industries of vacuum cups, automobiles, plastics, and the like. But in the electronics industry, more energy-accurate, more controlled semiconductor lasers are often used for soldering. In the field of semiconductor welding heads, a plurality of areas need to be welded simultaneously, and the energy of each area and the size of light spots need to be the same so as to ensure uniform, firm and attractive welding. The size and the working distance of square light spots are always required in the welding process, so that the light spots enter a tool fixture to limit a welding area, and energy is prevented from radiating to other elements to damage the elements. The first optical scheme mainly comprises two optical schemes, wherein the first optical scheme uses a negative-angle prism to split light, and a cylindrical mirror and a focusing mirror are used for focusing the light into required light spots. The second type uses a beam splitter to split the light and then focus the light into two desired spots. The first scheme has the defects that the processing technology of bonding the double wedge angle mirrors into the negative angle mirror determines that the negative angle mirror cannot bear high power and is unstable in light splitting, and the second scheme has the defects that after the optical design is finished, the energy distribution can only be controlled by the plating film of the light splitting mirror, the subsequent debugging cannot be carried out, and the whole mechanical structure occupies a large space.
Therefore, it is necessary to provide a double square spot optical system for use in laser welding to solve the above problems.
[ Utility model ] content
The utility model aims at providing a lens easily processes, can bear the high power, each facula energy easily adjusts, focus facula is the two square shapes facula optical system of approximate square.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a double square light spot optical system used in laser welding comprises a collimating lens, a positive angle prism, a cylindrical lens, a focusing lens and a protective lens which are sequentially arranged at intervals along the direction of a light path; and the generatrix of the positive angle prism is arranged in parallel with the generatrix of the cylindrical mirror, and the position of the positive angle prism is adjustable in the direction vertical to the generatrix.
Furthermore, the optical axes of the collimating lens, the cylindrical lens and the focusing lens are arranged in a collinear manner.
Compared with the prior art, the utility model relates to a two side shape facula optical system for among laser welding's beneficial effect lies in: the lens is easy to process, can bear high power, the energy of each light spot is easy to adjust, and the focused light spot is approximately square, so that the minimization of the overall cost, the occupied space of the structure and the adjustment of the energy of the light spot are facilitated.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
the figures in the drawings represent:
100 a double square spot optical system for use in laser welding;
101 a laser beam; 1, a collimating mirror; 2, a positive angle prism; 3, a cylindrical mirror; 4, a focusing mirror; 5 protective glasses.
[ detailed description ] embodiments
Example (b):
referring to fig. 1, the present embodiment is a double square spot optical system 100 for laser welding, which includes a collimating lens 1, a positive angle prism 2, a cylindrical lens 3, a focusing lens 4, and a protective lens 5 sequentially disposed at intervals along a light path direction.
The collimator lens 1 is used to collimate the laser beam 101.
The positive angle prism 2 performs a light splitting process on the collimated light beam processed by the collimating mirror 1. The generatrix of the positive angle prism 2 is arranged in parallel with the generatrix of the cylindrical mirror 3, and the position of the positive angle prism 2 is adjustable in the direction vertical to the generatrix. The energy of the incident light can be uniformly distributed by adjusting the position of the positive angle prism 2 in the direction vertical to the generatrix, so that the energy distribution of two light spots on the surface of a workpiece is ensured to be uniform.
The optical axes of the collimating lens 1, the cylindrical lens 3 and the focusing lens 4 are arranged in a collinear way.
In order to verify the effectiveness of the optical system, the embodiment obtains the light spot effect diagram obtained by the optical system, and according to the symmetric distribution of the two light spots in the light spot effect diagram, the display energy of each light spot does not change similar gaussian distribution, and the energy gradually decreases from the center to the edge.
The traditional method for performing light splitting treatment mostly adopts a negative-angle prism, the negative-angle prism is mostly processed by being adhered by an optical adhesive for a double-wedge-angle lens, the use temperature of the general optical adhesive is-50-150 ℃, and the temperature of the lens is easily increased by long-time high-energy laser radiation to cause optical cement failure and unstable optical parameters. Therefore, the system adopts the positive angle prism for light splitting treatment, the positive angle prism is easy to process and coat, and the current market is easy to ensure that the lens per se can bear high power by using processing materials, a positive prism processing process and a coating process, so that the system can bear higher power compared with the traditional negative angle prism.
The system adopts the positive angle prism 2 for light splitting, and the area of the collimated light beam irradiated on the surface of the positive angle prism 2 can be distributed in the direction vertical to the bus by adjusting the positive angle prism 2. Structurally, an adjusting device can be designed to align the edge of the positive angle prism 2, the power of each light spot is respectively tested by a power meter below the focusing mirror 4 while the position of the positive angle prism 2 is adjusted repeatedly until the power of the two light spots is the same, and therefore the purpose that the energy of the light spots is the same and adjustable is achieved.
The utility model discloses a two square facula optical system 100 for among laser welding, laser beam 101 forms collimation light through collimating mirror 1 earlier, then carries out the beam split with collimation light through positive angle prism 2, and the size of welding area settlement direction is controlled to rethread cylindrical mirror 3, and then the focus of work of rethread focusing mirror 4 with the system focuses on the work piece surface, forms two square facula that energy distribution is even simultaneously on the work piece surface; this scheme has realized that the multizone is simultaneously, with energy, with big or small facula welding, optics processing is simple moreover, structural design is compact, optics dress transfers the convenience.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (2)
1. A double square spot optical system used in laser welding is characterized in that: the device comprises a collimating lens, a positive angle prism, a cylindrical lens, a focusing lens and a protective lens which are sequentially arranged at intervals along the direction of a light path; and the generatrix of the positive angle prism is arranged in parallel with the generatrix of the cylindrical mirror, and the position of the positive angle prism is adjustable in the direction vertical to the generatrix.
2. The double square spot optical system for use in laser welding according to claim 1, wherein: the optical axes of the collimating lens, the cylindrical lens and the focusing lens are arranged in a collinear way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022818243.XU CN214161745U (en) | 2020-11-30 | 2020-11-30 | Double square-shaped light spot optical system used in laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022818243.XU CN214161745U (en) | 2020-11-30 | 2020-11-30 | Double square-shaped light spot optical system used in laser welding |
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| Publication Number | Publication Date |
|---|---|
| CN214161745U true CN214161745U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022818243.XU Active CN214161745U (en) | 2020-11-30 | 2020-11-30 | Double square-shaped light spot optical system used in laser welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118268705A (en) * | 2024-06-03 | 2024-07-02 | 深圳市智博泰克科技有限公司 | Double-light-path composite laser welding galvanometer system and laser welding equipment |
-
2020
- 2020-11-30 CN CN202022818243.XU patent/CN214161745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118268705A (en) * | 2024-06-03 | 2024-07-02 | 深圳市智博泰克科技有限公司 | Double-light-path composite laser welding galvanometer system and laser welding equipment |
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