A laser aging test apparatus

Abstract

This invention provides a laser aging test device, relating to the field of power testing technology, to solve the problem that high-power laser testing requires a high-power laser power meter, resulting in high costs. The laser aging test device includes a base, an optical fiber clamp, a beam splitter, a laser power meter, and a heat dissipation device. The optical fiber clamp is mounted on the base to fix the optical fiber capable of outputting a laser beam. The beam splitter is mounted on the base and configured to split the laser beam into a first beam and a second beam with different directions, the power ratio of the first beam to the second beam being less than 1:9. The laser power meter is mounted on the base to test the power of the first beam. The heat dissipation device absorbs and dissipates heat from the second beam. This invention utilizes a relatively low-power laser power meter to perform power testing of a high-power laser beam, thereby reducing the cost of the laser power meter.

Description

Technical Field

[0001] This utility model relates to the field of power testing technology, and more specifically, to a laser aging test device. Background Technology

[0002] A laser is a device that amplifies light waves through stimulated emission, producing a high-intensity, monochromatic, and coherent beam of light, and it has wide applications in many fields. With the rapid development of the laser industry, the number of products shipped by laser processing plants has increased dramatically. Before shipment, it is essential to conduct aging tests on the lasers using a laser power meter. This involves continuously outputting the laser for several hours while the laser power meter continuously monitors the output power. By monitoring the stability of the output power, the aging test of the laser can be achieved.

[0003] Currently, the output power of lasers is often tested directly using a laser power meter. Specifically, all the laser light emitted by the laser passes through the laser power meter to measure its output power. However, testing high-power lasers requires a high-power laser power meter, which is costly. Furthermore, the large size of high-power laser power meters makes them less integrated into laser aging test equipment. Utility Model Content

[0004] The purpose of this invention is to provide a laser aging test device to solve the technical problem that the detection of high-power lasers requires a high-power laser power meter, which results in high costs.

[0005] The laser aging test equipment provided by this utility model includes a base, an optical fiber clamp, a beam splitter, a laser power meter, and a heat dissipation device. The optical fiber clamp is installed on the base and is used to fix the optical fiber capable of outputting a laser beam. The beam splitter is installed on the base and is configured to split the laser beam into a first beam and a second beam with different directions, wherein the power ratio of the first beam to the second beam is less than 1:9. The laser power meter is installed on the base and is used to test the power of the first beam. The heat dissipation device is used to absorb and dissipate the heat of the second beam.

[0006] The beneficial effects of this new laser aging test equipment are:

[0007] By setting up a laser aging test device mainly composed of a base, laser output component, beam splitter, laser power meter, and heat dissipation device, when aging tests of the laser are required, i.e., when the output power of the laser needs to be tested, the laser fiber can be fixed using fiber optic clamps. After the laser is started, the laser beam is output through the fiber optic cable. The beam splitter splits the laser beam into a first beam and a second beam with different directions and a power ratio of less than 1:9. During the above process, the laser power meter detects the lower-power first beam and calculates the power value of the laser beam by obtaining the power value of the first beam. The heat dissipation device dissipates heat from the higher-power second beam to avoid heat concentration and damage to the device.

[0008] The laser aging test equipment is designed in a way that, on the one hand, allows for the indirect acquisition of the laser beam's power value by detecting and calculating the power of the first, lower-power beam using a lower-power laser power meter. This replaces the existing technology that uses a higher-power laser power meter to directly detect the higher-power laser beam. In other words, by detecting the power of the first, lower-power beam after beam splitting, the power of the higher-power laser beam can be detected using a lower-power laser power meter, thereby reducing the power requirements of the laser power meter and lowering its cost. On the other hand, the reduced power of the laser power meter also reduces its size, allowing the fiber optic clamp, beam splitting assembly, and laser power meter to be integrated onto the base. This ensures the integration of the laser aging test equipment and improves its ease of handling and use.

[0009] In an optional technical solution, the heat dissipation device includes a heat sink module, which includes a heat dissipation cavity and a plurality of heat sinks mounted on the outer surface of the heat dissipation cavity. The heat dissipation cavity is used to receive the second light beam and reflect the second light beam.

[0010] In an optional technical solution, the heat dissipation cavity includes a first horizontal segment, a second horizontal segment, and a vertical segment that are interconnected. The vertical segment is located between the first horizontal segment and the second horizontal segment, and the vertical segment is opposite to the second light beam. A plurality of heat dissipation fins are arranged at intervals between the first horizontal segment and the second horizontal segment, and a plurality of heat dissipation fins are installed on the vertical segment.

[0011] In an optional technical solution, the heat dissipation device further includes a heat sink block located between the heat sink module and the beam splitting component, and the heat sink block has an inlet hole for the second beam to pass through.

[0012] In an optional technical solution, the laser aging test equipment further includes a light-blocking plate, which is fixedly disposed on the side of the heat sink facing the beam splitting component, and the light-blocking plate covers the light inlet hole.

[0013] In an optional technical solution, the heat dissipation device further includes a cooling fan located to the side of the heat sink module, which is used to carry away the heat generated by the heat sink module.

[0014] In an optional technical solution, the laser aging test equipment further includes an explosion-proof plate, which is located on the optical path between the optical fiber and the beam splitter, and the explosion-proof plate is fixedly disposed relative to the base.

[0015] In an optional technical solution, the laser aging test equipment further includes an explosion-proof plate mounting assembly. The explosion-proof plate mounting assembly includes an explosion-proof plate mounting base and an explosion-proof plate fixing base. The explosion-proof plate fixing base is mounted on the base, and the explosion-proof plate fixing base has a light-passing hole extending along the laser beam emission direction. The explosion-proof plate fixing base also has a slot. The explosion-proof plate mounting base has an explosion-proof plate mounting hole, and the explosion-proof plate mounting base is inserted into the slot. The explosion-proof plate mounting hole is opposite to the light-passing hole.

[0016] In an optional technical solution, the laser aging test equipment further includes a protective cover, which is fixedly connected to the base, and a receiving cavity is formed between the protective cover and the base. The beam splitter, the laser power meter, and the explosion-proof sheet are all located in the receiving cavity.

[0017] In an optional technical solution, the protective cover includes a first cover and a second cover, wherein the first cover and the base form the receiving cavity; the second cover is located on the side of the heat sink module, and a heat dissipation cavity is formed between the second cover and the heat sink module; the heat dissipation fan is located in the heat dissipation cavity, and the heat dissipation fan is installed on the second cover; the second cover has heat dissipation holes opposite to the heat dissipation fan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A three-dimensional disassembled view of the laser aging test equipment provided in this embodiment of the utility model.

[0020] Figure 2 A three-dimensional disassembly view of the laser aging test equipment provided in this embodiment of the present invention, viewed from another direction.

[0021] Figure 3A schematic diagram illustrating the working principle of the laser aging test equipment provided in this embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 010 - Laser beam; 101 - First beam; 102 - Second beam;

[0024] 100-Base; 200-Fiber Optic Clamp; 300-Beam Splitter; 400-Laser Power Meter; 500-Heat Dissipation Device; 600-Light Blocking Plate; 700-Signal Processing Board; 800-Explosion-proof Plate Mounting Assembly; 900-Protective Cover;

[0025] 310 - Beam splitter; 320 - Beam splitter mount;

[0026] 510 - Heat sink module; 511 - Heat dissipation cavity; 5111 - First horizontal section; 5112 - Second horizontal section; 5113 - Vertical section; 5114 - Process hole; 5115 - Cover; 512 - Heat sink; 520 - Heat sink block; 521 - Light inlet hole; 530 - Cooling fan;

[0027] 801 - Explosion-proof disc; 810 - Explosion-proof disc mounting base; 811 - Explosion-proof disc mounting hole; 820 - Explosion-proof disc fixing base; 821 - Light-passing hole; 822 - Slot;

[0028] 910 - First cover; 920 - Second cover; 921 - Heat dissipation hole; 930 - Third cover; 940 - Power interface; 950 - Communication interface. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0030] Figure 1 A three-dimensional disassembled view of the laser aging test equipment provided in this embodiment of the utility model; Figure 2 A three-dimensional disassembled view of the laser aging test equipment provided in this embodiment of the present invention, viewed from another direction; as shown. Figure 1 and Figure 2As shown, this embodiment provides a laser aging test device, including a base 100, an optical fiber clamp 200, a beam splitter 300, a laser power meter 400, and a heat dissipation device 500. Specifically, the optical fiber clamp 200 is mounted on the base 100 to fix the optical fiber capable of outputting a laser beam 010; the beam splitter 300 is mounted on the base 100 and is configured to split the laser beam 010 into a first beam 101 and a second beam 102 with different directions, the power ratio of the first beam 101 to the second beam 102 being less than 1:9; the laser power meter 400 is mounted on the base 100 to test the power of the first beam 101; and the heat dissipation device 500 is used to absorb and dissipate heat from the second beam 102.

[0031] When aging tests are required on the laser, i.e., when the output power of the laser needs to be tested, the fiber optic clamp 200 can be used to fix the laser's optical fiber. After the laser is started, the laser beam 010 is output through the optical fiber, and the beam splitter 300 splits the laser beam 010 into a first beam 101 and a second beam 102 with different directions and a power ratio less than 1:9. Figure 3 As shown. In the above process, the laser power meter 400 detects the first beam 101 with lower power and calculates the power value of the laser beam 010 by obtaining the power value of the first beam 101; the heat dissipation device 500 dissipates heat from the second beam 102 with higher power to avoid heat concentration and damage to the device.

[0032] The laser aging test equipment is configured in a way that, on the one hand, it can indirectly obtain the power value of the laser beam 010 by detecting and calculating the power of the first beam 101 with a lower power laser power meter 400, instead of directly detecting the higher power laser beam 010 with a higher power laser power meter 400 in the prior art. That is, by detecting the power of the first beam 101 after beam splitting, the power of the higher power laser beam 010 can be detected by the lower power laser power meter 400, thereby reducing the power requirements of the laser power meter 400 and reducing its cost. On the other hand, the reduced power of the laser power meter 400 also reduces its size, allowing the fiber optic clamp 200, beam splitting component 300, and laser power meter 400 to be integrated on the base 100, ensuring the integration of the laser aging test equipment and improving the ease of handling and use.

[0033] Specifically, in this embodiment, the power ratio of the first beam 101 to the second beam 102 is 1:19. That is, 5% of the laser beam 010 becomes the first beam 101, and 95% becomes the second beam 102. After measuring the power of the first beam 101 using a laser power meter 400, the power is amplified by 20 times to obtain the power of the laser beam 010.

[0034] This power ratio setting between the first beam 101 and the second beam 102 can effectively reduce the power of the first beam 101, thereby enabling the testing purpose to be completed using a lower-power laser power meter 400.

[0035] like Figure 1 As shown, in this embodiment, the beam splitting assembly 300 may include a beam splitter 310 and a beam splitter mounting base 320, wherein the beam splitter mounting base 320 is mounted on the base 100, and the beam splitter 310 is mounted on the beam splitter mounting base 320.

[0036] In this embodiment, the beam splitter mounting base 320 can be fixedly installed on the base 100 by screws.

[0037] like Figure 1 and Figure 2 As shown, optionally, the heat dissipation device 500 may include a heat sink module 510, which includes a heat dissipation cavity 511 and a plurality of heat sinks 512 mounted on the outer surface of the heat dissipation cavity 511. The heat dissipation cavity 511 is used to receive the second light beam 102 and reflect the second light beam 102.

[0038] During the laser testing process, the laser beam 010 is split into a first beam 101 and a second beam 102 after passing through the beam splitter 300. The second beam 102 enters the heat dissipation cavity 511. After multiple reflections inside the heat dissipation cavity 511, the energy is dissipated, causing the heat dissipation cavity 511 to heat up. At the same time, the heat sink 512 increases the heat exchange area of ​​the heat dissipation cavity 511, so as to remove the heat in the heat dissipation cavity 511 and avoid heat concentration in the heat dissipation cavity 511.

[0039] It should be noted that the heat dissipation cavity 511 has several reflection channels inside. When the second beam 102 enters the heat dissipation cavity 511, it will be reflected multiple times under the action of the reflection channels to dissipate energy and allow the heat to be absorbed by the heat dissipation cavity 511.

[0040] like Figure 1 and Figure 2 As shown, optionally, a process hole 5114 is provided at the top of the heat dissipation cavity 511. The process hole 5114 facilitates the entry of the tool into the heat dissipation cavity 511 for processing the reflection channel. The process hole 5114 is provided with a cover 5115 that can be opened and closed. The cover 5115 can block the process hole 5114 to prevent the second beam 102 from being emitted from the process hole 5114 during the reflection process inside the heat dissipation cavity 511.

[0041] In this embodiment, the cover 5115 can be fixedly installed in the heat dissipation cavity 511 by screws.

[0042] like Figure 1 and Figure 2 As shown, optionally, the heat dissipation cavity 511 may include a first horizontal segment 5111, a second horizontal segment 5112, and a vertical segment 5113 that are interconnected. Specifically, the vertical segment 5113 is located between the first horizontal segment 5111 and the second horizontal segment 5112, and the vertical segment 5113 is opposite to the second beam 102. A plurality of heat sinks 512 are spaced apart between the first horizontal segment 5111 and the second horizontal segment 5112, and a plurality of heat sinks 512 are installed on the vertical segment 5113.

[0043] By setting multiple heat sinks 512, the heat exchange area of ​​the heat dissipation cavity 511 can be effectively increased, thereby improving heat dissipation efficiency. Furthermore, by arranging multiple heat sinks 512 between the first horizontal segment 5111 and the second horizontal segment 5112, the space occupied around the heat sink module 510 can be reduced.

[0044] like Figure 1 and Figure 2 As shown, optionally, the heat dissipation device 500 also includes a heat sink 520. Specifically, the heat sink 520 is located between the heat sink module 510 and the beam splitter 300, and the heat sink 520 has an inlet hole 521 for the second beam 102 to pass through.

[0045] After the laser beam 010 is split into a first beam 101 and a second beam 102 by the beam splitter 300, the second beam 102 enters through the light inlet 521 of the heat sink 520. During this process, the heat sink 520 absorbs the heat of the second beam 102 once. Then, after the second beam 102 has completely passed through the heat sink 520, it enters the heat dissipation cavity 511, where it undergoes multiple reflections and absorptions, and the heat sink 512 carries away the heat in the heat dissipation cavity 511.

[0046] Figure 3 A schematic diagram illustrating the working principle of the laser aging test equipment provided in this embodiment of the utility model. Figure 1 and Figure 3 As shown, optionally, the laser aging test equipment also includes a light-blocking plate 600, wherein the light-blocking plate 600 is fixedly disposed on the side of the heat sink 520 facing the beam splitting component 300, and the light-blocking plate 600 covers the light inlet hole 521.

[0047] The light-blocking plate 600 can block the second beam 102 to a certain extent, thereby reducing the damage to the heat dissipation device 500 caused by the second beam 102 directly acting on it.

[0048] Specifically, in this embodiment, the light-blocking sheet 600 can be fixedly installed on the heat sink 520 by screws.

[0049] like Figure 1 As shown, optionally, the heat dissipation device 500 also includes a heat dissipation fan 530. Specifically, the heat dissipation fan 530 is located on the side of the heat sink module 510 and is used to carry away the heat generated by the heat sink module 510.

[0050] When the cooling fan 530 is started, it can accelerate the airflow around the heat sink module 510 to carry away the heat around the heat sink module 510, thereby preventing the heat from concentrating around the heat sink module 510.

[0051] In this embodiment, the cooling fan 530 and the heat sink 520 are respectively disposed on a set of adjacent sides of the heat sink module 510. That is, the cooling fan 530 is located at the end of the heat sink module 510 that is perpendicular to the direction of the second beam 102.

[0052] This design reduces the overall length of the laser aging test equipment, thus facilitating a more compact design.

[0053] like Figure 1 As shown, in this embodiment, the laser aging test equipment also includes an explosion-proof sheet 801. Specifically, the explosion-proof sheet 801 is located on the optical path between the optical fiber and the beam splitter 300, and the explosion-proof sheet 801 is fixedly disposed relative to the base 100.

[0054] By setting the aforementioned explosion-proof sheet 801, in the event of an abnormal situation, such as when the laser current used to emit laser beam 010 is unstable, the explosion-proof sheet 801 will be damaged first, thereby achieving the purpose of protecting subsequent optical devices.

[0055] like Figure 1 As shown, in this embodiment, the laser aging test equipment further includes an explosion-proof mounting assembly 800. The explosion-proof mounting assembly 800 includes an explosion-proof mounting base 810 and an explosion-proof fixing base 820. The explosion-proof fixing base 820 is mounted on the base 100 and has a light-passing hole 821 that extends along the emission direction of the laser beam 010. The explosion-proof fixing base 820 also has a slot 822. The explosion-proof mounting base 810 has an explosion-proof mounting hole 811 and is inserted into the slot 822. The explosion-proof mounting hole 811 is opposite to the light-passing hole 821.

[0056] When assembling the explosion-proof plate 801, the explosion-proof plate fixing seat 820 can be fixed to the base 100, so that the light-passing hole 821 opened in the explosion-proof plate fixing seat 820 is opposite to the optical fiber clamped and fixed by the optical fiber clamp 200. At the same time, the explosion-proof plate 801 can be installed into the explosion-proof plate mounting hole 811 of the explosion-proof plate mounting seat 810. Then, the explosion-proof plate mounting seat 810 is inserted into the slot 822 so that the explosion-proof plate 801 is opposite to the light-passing hole 821, so that after the laser beam 010 is emitted from the optical fiber, the laser beam 010 can reach the beam splitter 310 through the explosion-proof plate 801.

[0057] In this embodiment, the explosion-proof disc mounting base 810 can be fixedly mounted to the explosion-proof disc mounting base 820 with screws. This mounting method of the explosion-proof disc mounting assembly 800 facilitates replacement of the explosion-proof disc 801 after damage.

[0058] like Figure 1 As shown, in this embodiment, the fiber optic clamp 200 can be fixedly installed on the explosion-proof plate fixing seat 820 by screws.

[0059] like Figure 1 and Figure 2 As shown, optionally, the laser aging test equipment also includes a protective cover 900. Specifically, the protective cover 900 is fixedly connected to the base 100, and a receiving cavity is formed between the protective cover 900 and the base 100. The beam splitter 300, the laser power meter 400 and the explosion-proof sheet 801 are all located in the receiving cavity.

[0060] This configuration protects the beam splitter 300, the laser power meter 400, and the explosion-proof plate 801. Protecting the beam splitter 300 reduces optical path loss, while protecting the laser power meter 400 ensures measurement accuracy, thus guaranteeing the accuracy of laser aging tests. Protecting the explosion-proof plate 801 reduces the risk of its breakage, thereby preventing damage to the beam splitter 310 due to fluctuations in the laser beam 010.

[0061] like Figure 1 and Figure 2 As shown, optionally, the shield 900 may include a first shield 910 and a second shield 920. Specifically, the first shield 910 and the base 100 form a receiving cavity; the second shield 920 is located on the side of the heat sink module 510, and a heat dissipation cavity 511 is formed between the second shield 920 and the heat sink module 510. The heat dissipation fan 530 is located in the heat dissipation cavity 511 and is installed on the second shield 920. The second shield 920 has heat dissipation holes 921 opposite to the heat dissipation fan 530.

[0062] The structure of the shield 900 serves two purposes: firstly, the first shield 910 can protect the beam splitter 300, the laser power meter 400, and the explosion-proof sheet 801; secondly, the second shield 920 can serve as the mounting base for the cooling fan 530. This allows the weight of the cooling fan 530 to be borne by the second shield 920, and the cooling fan 530 can be removed along with the shield 900 for easy maintenance.

[0063] In this embodiment, the first cover 910 and the second cover 920 are an integral structure.

[0064] like Figure 1 and Figure 2 As shown, optionally, the protective cover 900 also includes a third cover 930. Specifically, the third cover 930 is located inside the first cover 910, and the third cover 930 covers the beam splitter 300, the explosion-proof plate 801, and the explosion-proof plate mounting assembly 800. This arrangement provides secondary protection for the beam splitter 300 and the explosion-proof plate 801, ensuring that the beam splitter 300 and the explosion-proof plate 801 remain shielded even after the first cover 910 and the second cover 920 are removed, thus preventing contamination and damage to the beam splitter 300 and the explosion-proof plate 801 after their removal.

[0065] like Figure 2 As shown, in this embodiment, the second cover 920 is also provided with a power interface 940 and a communication interface 950, and the laser aging test equipment also includes a signal processing board 700.

[0066] The aforementioned power interface 940 facilitates power supply to the electrical components in the laser aging test equipment; the communication interface 950 facilitates data transmission in the laser aging test equipment; and the signal processing board 700 can convert the signals in the laser aging test equipment accordingly for easy reading.

[0067] The details of how to use the power interface 940 for power supply, how to use the communication interface 950 for communication, and how to use the signal processing board 700 for signal conversion are all things that those skilled in the art can obtain from existing technology, and therefore will not be elaborated further.

[0068] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0069] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] In the above embodiments, descriptions of directions such as "up", "down", and "side" are based on the accompanying drawings.

[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser burn-in test apparatus, characterized by, The device includes a base (100), an optical fiber clamp (200), a beam splitter (300), a laser power meter (400), and a heat dissipation device (500). The optical fiber clamp (200) is mounted on the base (100) and is used to fix the optical fiber capable of outputting a laser beam (010). The beam splitter (300) is mounted on the base (100) and is configured to split the laser beam (010) into a first beam (101) and a second beam (102) with different directions. The power ratio of the first beam (101) to the second beam (102) is less than 1:

9. The laser power meter (400) is mounted on the base (100) and is used to test the power of the first beam (101). The heat dissipation device (500) is used to absorb and dissipate heat from the second beam (102).

2. The laser burn-in test apparatus of claim 1, wherein, The heat dissipation device (500) includes a heat sink module (510), which includes a heat dissipation cavity (511) and a plurality of heat sinks (512) mounted on the outer surface of the heat dissipation cavity (511). The heat dissipation cavity (511) is used to receive the second light beam (102) and reflect the second light beam (102).

3. The laser burn-in test apparatus of claim 2, wherein, The heat dissipation cavity (511) includes a first horizontal segment (5111), a second horizontal segment (5112), and a vertical segment (5113) that are interconnected. The vertical segment (5113) is located between the first horizontal segment (5111) and the second horizontal segment (5112), and the vertical segment (5113) is opposite to the second light beam (102). A plurality of heat sinks (512) are spaced apart between the first horizontal segment (5111) and the second horizontal segment (5112), and a plurality of heat sinks (512) are installed on the vertical segment (5113).

4. The laser burn-in test apparatus of claim 2, wherein, The heat dissipation device (500) further includes a heat sink (520), which is located between the heat sink module (510) and the beam splitter (300), and the heat sink (520) has an inlet hole (521) for the second beam (102) to pass through.

5. The laser burn-in test apparatus of claim 4, wherein, The laser aging test equipment also includes a light-blocking plate (600), which is fixedly disposed on the side of the heat sink (520) facing the beam splitter (300), and the light-blocking plate (600) covers the light inlet hole (521).

6. The laser burn-in test apparatus of claim 2, wherein, The heat dissipation device (500) further includes a cooling fan (530), which is located on the side of the heat sink module (510) and is used to carry away the heat generated by the heat sink module (510).

7. The laser burn-in test apparatus of claim 6, wherein, The laser aging test equipment also includes an explosion-proof plate (801), which is located on the optical path between the optical fiber and the beam splitter (300), and the explosion-proof plate (801) is fixedly arranged relative to the base (100).

8. The laser burn-in test apparatus of claim 7, wherein, The laser aging test equipment also includes an explosion-proof plate mounting assembly (800), which includes an explosion-proof plate mounting base (810) and an explosion-proof plate fixing base (820). The explosion-proof plate fixing base (820) is mounted on the base (100) and has a light-passing hole (821) extending along the emission direction of the laser beam (010). The explosion-proof plate fixing base (820) also has a slot (822). The explosion-proof plate mounting base (810) has an explosion-proof plate mounting hole (811), which is inserted into the slot (822). The explosion-proof plate mounting hole (811) is opposite to the light-passing hole (821).

9. The laser burn-in test apparatus of claim 7, wherein, The laser aging test equipment also includes a protective cover (900), which is fixedly connected to the base (100). A receiving cavity is formed between the protective cover (900) and the base (100). The beam splitter (300), the laser power meter (400), and the explosion-proof sheet (801) are all located in the receiving cavity.

10. The laser burn-in test apparatus of claim 9, wherein, The protective cover (900) includes a first cover (910) and a second cover (920). The first cover (910) and the base (100) form the receiving cavity. The second cover (920) is located on the side of the heat sink module (510), and a heat dissipation cavity (511) is formed between the second cover (920) and the heat sink module (510). The heat dissipation fan (530) is located in the heat dissipation cavity (511) and is installed on the second cover (920). The second cover (920) has heat dissipation holes (921) opposite to the heat dissipation fan (530).

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