A method and apparatus for measuring optical power

Abstract

This invention relates to the technical field of optical power testing, and in particular to an optical power testing method and equipment. It can automatically load and unload materials, automatically reject unqualified optical emitting modules, and classify and collect unqualified optical emitting modules, resulting in high work efficiency and applicability to production lines. The method includes a conveyor belt and an optical power meter; it also includes a test head, an electric push rod, a spring, an active locking block, a drive motor, a passive locking block, and a gripping mechanism. The test head is connected to the optical power meter via an optical fiber. The test head and the electric push rod are located on opposite sides of the conveyor belt. The active locking block is mounted on the top of the piston rod of the electric push rod via the spring. The passive locking block is mounted on the output shaft of the drive motor, and the passive locking block is arranged opposite to the active locking block. The gripping mechanism is mounted between the conveyor belt and the electric push rod via a bracket. The gripping mechanism grips the optical emitting modules on the conveyor belt and moves them between the active and passive locking blocks, aligning the test head with the emitting part of the optical emitting module.

Description

Technical Field

[0001] This invention relates to the technical field of optical power testing, and in particular to an optical power testing method and equipment. Background Technology

[0002] Optical power refers to the work done by light per unit time, and it is a crucial parameter affecting the performance of a light source. For example, when the optical power of the light-emitting module is low, the energy of the emitted light signal is weak, affecting the transmission distance; conversely, when the optical power is high, the current flowing through the module will be excessive, impacting the lifespan of the light source. Therefore, in practical industries, it is often necessary to test the optical power of light sources.

[0003] The specialized tool for testing optical power is an optical power meter. The optical power meter is equipped with a light input pupil, through which the light emitted by the light source enters, and the display of the optical power meter shows the optical power value.

[0004] In the prior art, various optical power testing devices have been proposed, such as the optical power testing device proposed in Chinese utility model patent No. ZL202120966552.3, and the optical power testing device for an optical module proposed in Chinese utility model patent No. ZL202121298709.6. However, the above-mentioned testing devices do not have automatic feeding functions or functions for rejecting defective products, resulting in low working efficiency and inconvenience for application in production lines. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a method and equipment for testing optical power in production lines that can automatically load and unload materials, automatically reject unqualified optical emitting modules, and classify and collect unqualified optical emitting modules, with high work efficiency.

[0006] This invention discloses an optical power testing device, comprising a conveyor belt and an optical power meter. The conveyor belt transports an optical emitting module, and the optical power meter is used to test the luminous power of the optical emitting module. It also includes a test head, an electric push rod, a spring, an active locking block, a drive motor, a passive locking block, and a gripping mechanism. The test head is connected to the aperture of the optical power meter via an optical fiber. The test head and the electric push rod are mounted above the conveyor belt via a bracket, with the test head and the electric push rod located on opposite sides of the conveyor belt. The active locking block is mounted on the top of the piston rod of the electric push rod via the spring, and the active locking block is equipped with... The system includes a module that supplies power to the light-emitting modules. A drive motor is mounted below the test head via a bracket. A passive locking block is mounted on the output shaft of the drive motor, arranged opposite to an active locking block. A gripping mechanism is mounted between the conveyor belt and the electric actuator via a bracket. The gripping mechanism grasps the light-emitting modules on the conveyor belt and moves them between the active and passive locking blocks, aligning the test head with the emitting section of the light-emitting modules. During operation, the conveyor belt runs, transporting multiple light-emitting modules, and the gripping mechanism grasps and emits light from these modules. The module moves between the active and passive locking blocks, aligning the test end with the emitting part of the optical emitting module. The piston rod of the electric actuator extends, pushing the active locking block via spring one. The active locking block presses the optical emitting module against the passive locking block, compressing spring one. Simultaneously, the active locking block supplies power to the optical emitting module, causing it to emit light that illuminates the test end. The light beam passes through an optical fiber into an optical power meter, which measures the optical power. When the optical power is less than a set value, the drive motor rotates the passive locking block to one side, causing the spring force to press the optical emitting module... When the optical power exceeds the set value, the drive motor drives the passive locking block to rotate to the other side, causing the spring force to eject the optical emitting module. When the optical power is within the set qualified range, the piston rod of the electric push rod retracts, causing the active locking block to release the optical emitting module. The gripping mechanism then places the qualified optical emitting module back onto the conveyor belt, thus completing the optical power test of the optical emitting module. It can automatically load and unload materials, automatically reject unqualified optical emitting modules, and classify unqualified optical emitting modules. It has high working efficiency and can be easily applied to production lines.

[0007] Preferably, the active and passive card blocks are provided with guide positioning slots on their opposite surfaces that match the two ends of the light emitting module; by providing guide positioning slots, the active and passive card blocks can quickly position the light emitting module when clamping it, so that the light emitting head of the light emitting module is aligned with the test end.

[0008] Preferably, it also includes a light shield, which is fitted onto the end of the test head and covers the light-emitting head of the light-emitting module to block the light; by covering the light-emitting head of the light-emitting module with the light shield, the influence of ambient light on the test results is reduced.

[0009] Preferably, it also includes a lens, which is installed on the end of the test head and connected to the optical fiber; the lens helps to focus the light and collect most of the light, which helps to improve the test accuracy.

[0010] Preferably, it also includes two collection boxes, which are mounted on the conveyor belt by brackets and are located on the left and right sides of the drive motor, respectively; the two collection boxes are used to collect two types of unqualified light emitting modules respectively, which is practical.

[0011] Preferably, the gripping mechanism includes a gripping motor, a shaft, two gripping rods, two suction cups, and a vacuum line. The gripping motor is mounted between the conveyor belt and the electric push rod via a bracket. The output shaft of the shaft is concentrically connected to the shaft. The two gripping rods are symmetrically mounted on the shaft. The two suction cups are respectively mounted on the outer ends of the two gripping rods via sliding components. The vacuum line is arranged on the shaft and the two gripping rods and is connected to the two suction cups. The gripping motor drives the shaft to rotate, and the shaft drives the two gripping rods to rotate, so that the gripping rods drive the suction cups to adsorb the light emitting module on the conveyor belt and move the light emitting module between the active block and the passive block. When the active block pushes the light emitting module towards the passive block, the sliding component causes the light emitting module to press against the passive block, realizing automatic gripping and feeding, which is practical.

[0012] Preferably, the sliding component includes two sliders and two springs. The top of each of the two gripping rods is provided with a slide table. The two sliders are slidably mounted on the two slide tables respectively. The two sliders and the two slide tables are elastically connected by the two springs. The two sliders can slide along the two slide tables. The elastic force of the two springs will reset the two sliders, so that the light emitting module can be pushed and pressed onto the passive block by the active locking block, which has good practicality.

[0013] Preferably, the vacuum pipeline includes a rotating structure, a suction pipe, two suction branch pipes, and a three-way valve. The rotating structure is mounted on a shaft and has two output connectors. One end of each of the two suction branch pipes is connected to the two output connectors, and the other end of each suction branch pipe is connected to two suction cups. The rotating structure also has an input connector, and the suction pipe is connected to the input connector. A three-way valve is installed on the suction pipe, with one channel of the three-way valve open to air. By using the rotating structure, the two suction branch pipes rotate with the two suction cups without bending. The three-way valve is electrically connected to the device's controller. When the optical power meter detects that the optical power of the optical emission module is unqualified, the three-way valve closes the suction pipe and opens the two suction branch pipes to air, causing the suction cups to release the optical emission module, facilitating its removal. This design is highly practical.

[0014] Preferably, it also includes a photoelectric switch, which is mounted on the conveyor belt via a bracket. The photoelectric switch is located below the gripping motor and detects whether the light emitting module on the conveyor belt is in position. When the light emitting module conveyed by the conveyor belt blocks the light signal emitted by the photoelectric switch, the equipment determines that the light emitting module has reached the designated position, the conveyor belt stops, the gripping motor starts to grip the light emitting module, and the tested light emitting module is placed back on the conveyor belt to improve the gripping accuracy.

[0015] An optical power testing method of the present invention:

[0016] S1, the conveyor belt transports light emitting modules. When the photoelectric switch detects the light emitting module, the conveyor belt stops.

[0017] S2, the gripping motor drives the shaft to rotate, causing the suction cup to press against the light emitting module. The air extraction tube extracts air, the suction cup holds the light emitting module, and moves the light emitting module between the active and passive clamping blocks. At the same time, the light emitting module that was tested last time is put back onto the conveyor belt.

[0018] S3, the piston rod of the electric push rod extends and pushes the active locking block to press the light emitting module onto the passive locking block, and causes the slider to move along the slide table toward the test end, covering the light emitting head of the light emitting module in the light shield. The active locking block supplies power to the light emitting module, the light emitting module emits light, and the optical power meter detects the optical power of the light emitting module.

[0019] S4. When the light power of the light emitting module is not up to standard, the three-way valve switches, causing the suction cup to release the light emitting module, and the drive motor drives the passive clamp to rotate, pushing the unqualified light emitting module into the corresponding collection box.

[0020] S5, when the optical power of the optical emitting module is qualified, the electric push rod retracts the piston rod, the gripping motor drives the shaft to rotate, and the qualified optical emitting module is placed back on the conveyor belt.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows: During operation, the conveyor belt runs, transporting multiple optical emitting modules. The gripping mechanism grips the optical emitting modules on the conveyor belt and moves them between the active and passive clamping blocks, aligning the test end with the emitting part of the optical emitting module. The piston rod of the electric push rod extends and pushes the active clamping block through a spring. The active clamping block presses the optical emitting module against the passive clamping block and compresses the spring. Simultaneously, the active clamping block supplies power to the optical emitting module, causing it to emit light that illuminates the test end. The light is input into the optical power meter through an optical fiber. The optical power meter measures the optical power. When the optical power is less than a set value, the drive... The drive motor drives the passive locking block to rotate to one side, causing the spring force to eject the light emitting module. When the light power exceeds the set value, the drive motor drives the passive locking block to rotate to the other side, causing the spring force to eject the light emitting module. When the light power is within the set qualified range, the piston rod of the electric push rod retracts, causing the active locking block to release the light emitting module. The gripping mechanism places the qualified light emitting module back onto the conveyor belt, thus completing the light power test of the light emitting module. It can automatically load and unload materials, automatically reject unqualified light emitting modules, and classify unqualified light emitting modules. It has high working efficiency and can be easily applied to production lines. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a side view of the structure of the present invention;

[0024] Figure 3 It is a structural diagram of the gripping mechanism and other structures;

[0025] Figure 4 It is a structural diagram of the electric actuator, spring 1, active locking block, drive motor and passive locking block, etc.

[0026] Figure 5 This is a structural diagram of the optical power meter and test terminal, etc.

[0027] Figure 6 This is a schematic diagram of the structure of the present invention in its working state;

[0028] The following are labels in the attached diagram: 1. Conveyor belt; 2. Optical power meter; 3. Test end; 4. Electric push rod; 5. Spring 1; 6. Active locking block; 7. Drive motor; 8. Passive locking block; 9. Light shield; 10. Lens; 11. Collection box; 12. Gripping motor; 13. Shaft; 14. Gripping rod; 15. Suction cup; 16. Slider; 17. Spring 2; 18. Rotating structure; 19. Air extraction pipe; 20. Air extraction branch pipe; 21. Three-way valve; 22. Photoelectric switch. Detailed Implementation

[0029] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0030] Example 1

[0031] An optical power testing method and apparatus includes a conveyor belt 1 and an optical power meter 2. The conveyor belt 1 transports an optical emitting module, and the optical power meter 2 is used to test the luminous power of the optical emitting module. It also includes a test end 3, an electric push rod 4, a spring 5, an active locking block 6, a drive motor 7, a passive locking block 8, and a gripping mechanism. The test end 3 is connected to the aperture of the optical power meter 2 via an optical fiber. The test end 3 and the electric push rod 4 are mounted above the conveyor belt 1 via a bracket, with the test end 3 and the electric push rod 4 located on opposite sides of the conveyor belt 1. The active locking block 6 is mounted on the top of the piston rod of the electric push rod 4 via the spring 5. The active locking block 6 is equipped with a module for supplying power to the optical emitting module. The drive motor 7 is mounted below the test end 3 via a bracket, and the passive locking block 8 is mounted on the output shaft of the drive motor 7. The passive locking block 8 is connected to the active locking block 2. The card blocks 6 are arranged opposite each other. The gripping mechanism is installed between the conveyor belt 1 and the electric push rod 4 through the bracket. The gripping mechanism grips the light emitting module on the conveyor belt 1 and moves the light emitting module between the active card block 6 and the passive card block 8. The test end 3 is aligned with the emitting part of the light emitting module. The active card block 6 and the passive card block 8 are provided with guide positioning slots that match the two ends of the light emitting module on their opposite surfaces. It also includes a light shield 9, which is fitted onto the end of the test end 3 and covers the light emitting head of the light emitting module to block the light. It also includes a lens 10, which is installed on the end of the test end 3 and is connected to the optical fiber. It also includes two collection boxes 11, which are installed on the conveyor belt 1 through the bracket. The two collection boxes 11 are located on the left and right sides of the drive motor 7, respectively.

[0032] During operation, conveyor belt 1 runs, transporting multiple light-emitting modules. A gripping mechanism grabs the light-emitting modules from conveyor belt 1 and moves them between active clamping block 6 and passive clamping block 8, aligning the test end 3 with the emitting part of the light-emitting module. The piston rod of the electric push rod 4 extends, pushing the active clamping block 6 via spring 5. The active clamping block 6 presses the light-emitting module firmly onto the passive clamping block 8, compressing spring 5. Simultaneously, the active clamping block 6 supplies power to the light-emitting module, causing it to emit light that illuminates the test end 3. The light beam is input into the optical power meter 2 through an optical fiber. The optical power meter 2 measures the optical power. When the optical power is less than a set value, drive motor 7 drives the passive clamping block 8 to rotate to one side, causing the spring force of spring 5 to eject the light-emitting module. When the optical power is greater than the set value, drive motor 7 drives the passive clamping block 8 to rotate to the other side, causing the spring force of spring 5 to eject the light-emitting module. When the optical power is within the set acceptable range, the piston rod of the electric push rod 4 retracts, causing the active clamping block 6 to release the optical emitting module. The gripping mechanism then places the qualified optical emitting module back onto the conveyor belt 1, thus completing the optical power test of the optical emitting module. This system can automatically load and unload materials, automatically reject unqualified optical emitting modules, and classify unqualified optical emitting modules. It has high working efficiency and can be easily applied to production lines. By setting guide positioning slots, the active clamping block 6 and the passive clamping block 8 can quickly position the optical emitting module when clamping it, aligning the light-emitting head of the optical emitting module with the test end 3. The light-emitting head of the optical emitting module is covered by the light shield 9 to reduce the influence of ambient light on the test results. The lens 10 helps to focus the light and collect most of the light, which helps to improve the test accuracy. The two collection boxes 11 are used to collect two types of unqualified optical emitting modules respectively, which is very practical.

[0033] Example 2

[0034] An optical power testing method and apparatus includes a conveyor belt 1 and an optical power meter 2. The conveyor belt 1 transports an optical emitting module, and the optical power meter 2 is used to test the luminous power of the optical emitting module. It also includes a test end 3, an electric push rod 4, a spring 5, an active locking block 6, a drive motor 7, a passive locking block 8, and a gripping mechanism. The test end 3 is connected to the aperture of the optical power meter 2 via an optical fiber. The test end 3 and the electric push rod 4 are mounted above the conveyor belt 1 via a bracket, with the test end 3 and the electric push rod 4 located on opposite sides of the conveyor belt 1. The active locking block 6 is mounted on the top of the piston rod of the electric push rod 4 via the spring 5. The active locking block 6 is equipped with a module that supplies power to the light emitting module. The drive motor 7 is mounted below the test end 3 via a bracket. The passive locking block 8 is mounted on the output shaft of the drive motor 7. The passive locking block 8 is arranged opposite to the active locking block 6. The gripping mechanism is mounted between the conveyor belt 1 and the electric push rod 4 via a bracket. The gripping mechanism grips the light emitting module on the conveyor belt 1 and moves the light emitting module between the active locking block 6 and the passive locking block 8. The test end 3 is aligned with the emitting part of the light emitting module. The gripping mechanism includes a gripping motor 12, a shaft 13, two gripping rods 14, and two suction cups 15. The gripping motor 12 is mounted between the conveyor belt 1 and the electric push rod 4 via a bracket. The output shaft of the shaft 13 is concentrically connected to the shaft 13. Two gripping rods 14 are symmetrically mounted on the shaft 13. Two suction cups 15 are respectively mounted on the outer ends of the two gripping rods 14 via sliding components. The vacuum pipeline is arranged on the shaft 13 and the two gripping rods 14, and the vacuum pipeline is connected to the two suction cups 15. The sliding components include two sliders 16 and two springs 17. Each of the top ends of the two gripping rods 14 is provided with a sliding table, and the two sliders 16 are slidably mounted on the two sliding tables respectively. The two slides are elastically connected by two springs 17; the vacuum pipeline includes a rotating structure 18, a suction pipe 19, two suction branch pipes 20 and a three-way valve 21. The rotating structure 18 is mounted on the shaft 13 and has two output connectors. One end of each of the two suction branch pipes 20 is connected to the two output connectors, and the other end of each of the two suction branch pipes 20 is connected to two suction cups 15. The rotating structure 18 has one input connector, and the suction pipe 19 is connected to the input connector. A three-way valve 21 is installed on the suction pipe 19, and one channel of the three-way valve 21 is in communication with air.

[0035] The gripping motor 12 drives the shaft 13 to rotate, which in turn drives the two gripping rods 14 to rotate. This causes the gripping rods 14 to drive the suction cups 15 to pick up the light emitting module on the conveyor belt 1 and move the light emitting module between the active clamping block 6 and the passive clamping block 8. When the active clamping block 6 pushes the light emitting module toward the passive clamping block 8, the slider 16 slides along the slide table, causing the light emitting module to press against the passive clamping block 8, thus achieving automatic gripping and feeding. This method is highly practical. After the light power test is completed, the elastic force of the two springs 17 resets the two sliders 16. By setting the rotating structure 18, the two air extraction branches 20 rotate with the two suction cups 15 without causing bending. The three-way valve 21 is electrically connected to the controller of the equipment. When the light power meter 2 detects that the light power of the light emitting module is unqualified, the three-way valve 21 closes the air extraction pipe 19 and connects the two air extraction branches 20 to the air, allowing the suction cups 15 to release the light emitting module, making it easy to eject the light emitting module. This method is highly practical.

[0036] Example 3

[0037] Based on embodiment 1, a photoelectric switch 22 is also included. The photoelectric switch 22 is mounted on the conveyor belt 1 by a bracket. The photoelectric switch 22 is located below the gripping motor 12. The photoelectric switch 22 detects whether the light emitting module on the conveyor belt 1 is in place.

[0038] When the light emitting module conveyed by the conveyor belt 1 blocks the light signal emitted by the photoelectric switch 22, the equipment determines that the light emitting module has reached the designated position, the conveyor belt 1 stops, the gripping motor 12 starts to grip the light emitting module, and puts the light emitting module back onto the conveyor belt 1 after the test is completed, thereby improving the accuracy of gripping.

[0039] like Figures 1 to 6As shown, the optical power testing method and equipment of the present invention, during operation, firstly, the conveyor belt 1 runs, conveying multiple optical emitting modules. The suction cup 15 picks up the optical emitting modules from the conveyor belt 1 and moves them between the active locking block 6 and the passive locking block 8, aligning the test end 3 with the emitting part of the optical emitting module. The piston rod of the electric push rod 4 extends, pushing the active locking block 6 via the spring-5. The active locking block 6 presses the optical emitting module firmly onto the passive locking block 8, compressing the spring-5. Simultaneously, the active locking block 6 supplies power to the optical emitting module, causing it to emit light that illuminates the lens 10 in the test end 3. The light then passes through the optical fiber and inputs optical power. In power meter 2, the optical power meter 2 tests the optical power. When the optical power is less than the set value, the drive motor 7 drives the passive locking block 8 to rotate to one side, so that the elastic force of spring 5 pops the optical emitting module out and falls into a collection box 11. When the optical power is greater than the set value, the drive motor 7 drives the passive locking block 8 to rotate to the other side, so that the elastic force of spring 5 pops the optical emitting module out and falls into another collection box 11. When the optical power is within the set qualified range, the piston rod of the electric push rod 4 retracts, so that the active locking block 6 releases the optical emitting module, and the gripping motor 12 drives the suction cup 15 to put the qualified optical emitting module back onto the conveyor belt 1.

[0040] The main functions achieved by this invention are:

[0041] 1. It can automatically load and unload materials, resulting in high work efficiency;

[0042] 2. Automatically reject unqualified light emitting modules and collect them in categories.

[0043] The optical power testing method and equipment of this invention can be installed, connected, or set up using common mechanical methods. Any method that can achieve the desired beneficial effect can be implemented. The conveyor belt 1, optical power meter 2, electric push rod 4, spring 1 5, drive motor 7, light shield 9, lens 10, gripping motor 12, suction cup 15, spring 2 17, rotating structure 18, three-way valve 21, and photoelectric switch 22 of the optical power testing method and equipment of this invention are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0044] 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 pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An optical power testing device, comprising a conveyor belt (1) and an optical power meter (2), wherein the conveyor belt (1) transports an optical emitting module, and the optical power meter (2) is used to test the luminous power of the optical emitting module; characterized in that, It also includes a test end (3), an electric push rod (4), a spring (5), an active locking block (6), a drive motor (7), a passive locking block (8), and a gripping mechanism. The test end (3) is connected to the pupil of the optical power meter (2) via an optical fiber. The test end (3) and the electric push rod (4) are mounted on the conveyor belt (1) via a bracket. The test end (3) and the electric push rod (4) are located on opposite sides of the conveyor belt (1). The active locking block (6) is mounted on the top of the piston rod of the electric push rod (4) via a spring (5). The active locking block (6) is mounted on the top of the piston rod of the electric push rod (4). A module for supplying power to the light emitting module is provided. The drive motor (7) is installed below the test end (3) via a bracket. A passive block (8) is installed on the output shaft of the drive motor (7). The passive block (8) is arranged opposite to the active block (6). The gripping mechanism is installed between the conveyor belt (1) and the electric push rod (4) via a bracket. The gripping mechanism grips the light emitting module on the conveyor belt (1) and moves the light emitting module between the active block (6) and the passive block (8). The test end (3) is aligned with the emitting part of the light emitting module. When the light power is less than the set value, the drive motor (7) drives the passive block (8) to rotate to one side, so that the elastic force of the spring (5) will pop out the light emitting module. When the light power is greater than the set value, the drive motor (7) drives the passive block (8) to rotate to the other side, so that the elastic force of the spring (5) will pop out the light emitting module.

2. The optical power testing device as described in claim 1, characterized in that, Both the active card block (6) and the passive card block (8) have guide positioning slots that match the two ends of the light emitting module on their opposite surfaces.

3. The optical power testing device as described in claim 1, characterized in that, It also includes a light shield (9), which is fitted onto the end of the test end (3) and covers the light-emitting head of the light-emitting module to block the light.

4. The optical power testing device as described in claim 1, characterized in that, It also includes a lens (10), which is mounted on the end of the test head (3) and connected to the optical fiber.

5. The optical power testing device as described in claim 1, characterized in that, It also includes two collection boxes (11), which are mounted on the conveyor belt (1) by brackets. The two collection boxes (11) are located on the left and right sides of the drive motor (7), respectively.

6. The optical power testing device as described in claim 1, characterized in that, The gripping mechanism includes a gripping motor (12), a shaft (13), two gripping rods (14), two suction cups (15), and a vacuum line. The gripping motor (12) is mounted between the conveyor belt (1) and the electric push rod (4) via a bracket. The output shaft of the shaft (13) is concentrically connected to the shaft (13). The two gripping rods (14) are symmetrically mounted on the shaft (13). The two suction cups (15) are respectively mounted on the outer ends of the two gripping rods (14) via sliding components. The vacuum line is arranged on the shaft (13) and the two gripping rods (14) and is connected to the two suction cups (15).

7. The optical power testing device as described in claim 6, characterized in that, The sliding component includes two sliders (16) and two springs (17). The top of each of the two gripping rods (14) is provided with a sliding table. The two sliders (16) are slidably mounted on the two sliding tables respectively. The two sliders (16) and the two sliding tables are elastically connected by the two springs (17).

8. The optical power testing device as described in claim 6, characterized in that, The vacuum pipeline includes a rotating structure (18), a suction pipe (19), two suction branches (20), and a three-way valve (21). The rotating structure (18) is mounted on a shaft (13). The rotating structure (18) has two output connectors. One end of each of the two suction branches (20) is connected to the two output connectors, and the other end of each of the two suction branches (20) is connected to two suction cups (15). The rotating structure (18) has one input connector. The suction pipe (19) is connected to the input connector. A three-way valve (21) is installed on the suction pipe (19), and one channel of the three-way valve (21) is connected to the air.

9. The optical power testing device as described in claim 1, characterized in that, It also includes a photoelectric switch (22), which is mounted on the conveyor belt (1) by a bracket. The photoelectric switch (22) is located below the gripping motor (12) and detects whether the light emitting module on the conveyor belt (1) is in place.

10. An optical power testing method for an optical power testing device as described in any one of claims 1 to 9, characterized in that, include: S1, conveyor belt (1) conveys the light emitting module. When the photoelectric switch (22) detects the light emitting module, the conveyor belt (1) stops. S2, the gripping motor (12) drives the shaft (13) to rotate, so that the suction cup (15) presses onto the light emitting module, the air extraction pipe (19) extracts air, the suction cup (15) sucks up the light emitting module, and moves the light emitting module to the middle of the active block (6) and the passive block (8), while the light emitting module tested last time is put back onto the conveyor belt (1); S3, the piston rod of the electric push rod (4) extends and pushes the active locking block (6) to press the light emitting module onto the passive locking block (8), and causes the slider (16) to move along the slide table toward the test end (3), covering the light emitting head of the light emitting module in the light shield (9), the active locking block (6) supplies power to the light emitting module, the light emitting module emits light, and the optical power meter (2) detects the optical power of the light emitting module; S4, when the light power of the light emitting module is not up to standard, the three-way valve (21) switches, causing the suction cup (15) to release the light emitting module, and the drive motor (7) drives the passive card block (8) to rotate, so that the unqualified light emitting module is pushed into the corresponding collection box (11). S5, when the optical power of the optical emitting module is qualified, the electric push rod (4) retracts the piston rod, the gripping motor (12) drives the shaft rod (13) to rotate, and puts the qualified optical emitting module back onto the conveyor belt (1).

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