Laser diode packaging test device and test method thereof

Abstract

The present application discloses a laser diode packaging test device and its testing method, which relate to the technical field of laser diode detection. The device comprises a base, a mounting frame, a current and voltage test assembly, and an imaging assembly. A support plate is provided at the upper end of the base, and the mounting frame is slidably mounted on the base. The base is provided with a drive assembly that drives the mounting frame to move in multiple directions. The current and voltage test assembly is mounted on the mounting frame and is located below the support plate. The imaging assembly is mounted on the mounting frame. While the current and voltage test assembly is testing a laser diode, the imaging assembly can simultaneously detect cracks on the surface of the laser diode. The present application simplifies the detection steps of laser diodes, thereby improving the detection efficiency and production efficiency of laser diodes.

Description

Technical Field

[0001] The present application relates to the technical field of laser diode detection, and in particular to a laser diode packaging test device and a test method thereof. Background Art

[0002] Laser diodes, also known as semiconductor lasers, are electronic devices that use semiconductor PN junctions to convert electrical energy into light energy and generate lasers. Due to their small size, light weight, and the excellent directivity and straightness of the lasers they produce, laser diodes are widely used in optical communications, medical treatment, sensing and other fields.

[0003] After packaging, current laser diodes typically undergo a visual inspection to check for damage, as well as forward voltage and current testing and optical output testing. However, laser diodes require numerous test values, and each test requires corresponding equipment. The overall inspection process is relatively complex and time-consuming, significantly reducing laser diode production efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a laser diode packaging testing device and a testing method thereof, which can simplify the detection steps of the laser diode, thereby improving the detection efficiency and production efficiency of the laser diode.

[0005] In a first aspect, the present application provides a laser diode packaging and testing device that adopts the following technical solutions:

[0006] A machine base, with a supporting plate for supporting the laser diode provided on the upper end;

[0007] A mounting frame is slidably mounted on the base, and the base is provided with a driving assembly for driving the mounting frame to move in multiple directions;

[0008] A current and voltage test assembly is mounted on the mounting frame and is located below the carrying plate;

[0009] The imaging component is mounted on the mounting frame and is located above the supporting plate. When the current and voltage testing component is testing a certain laser diode, the imaging component can simultaneously detect cracks on the surface of the laser diode.

[0010] Optionally, a filter is provided on the mounting frame, and the filter is located between the imaging component and the laser diode, and the filter is used to filter the light from the laser diode to the imaging component.

[0011] Optionally, a black light guide tube is further provided on the mounting frame, one end of the black light guide tube is connected to the output end of the imaging component, and the other end of the black light guide tube is abutted against the supporting plate. The filter is fixedly mounted on the inner wall of the black light guide tube, and one of the laser diodes on the supporting plate is located inside the black light guide tube. The black light guide tube can absorb excess light to improve the imaging quality of the imaging component.

[0012] Optionally, the black light guide tube is configured as a bellows, and the driving assembly can drive the current and voltage testing assembly and the black light guide tube close to one end of the carrier plate to move in a direction closer to or away from each other until the black light guide tube abuts against the carrier plate and the current and voltage testing assembly abuts against the pin of the laser diode. The configuration of the bellows can enable the black light guide tube to expand and contract, thereby facilitating the imaging assembly to test each laser diode on the carrier plate individually, and the inner wall area of ​​the bellows is relatively larger, which can absorb more excess light, further improving the imaging quality of the imaging assembly.

[0013] Optionally, the mounting bracket is provided with an adjustment component for adjusting the curvature of the wall of the black light guide tube. When more shadows appear on the picture taken by the imaging component, the adjustment component increases the curvature of the wall of the black light guide tube to reduce the number of refractions of light in the black light guide tube, thereby increasing the amount of light reaching the imaging component; when more light spots appear on the picture taken by the imaging component, the adjustment component reduces the curvature of the wall of the black light guide tube.

[0014] Optionally, the mounting bracket is further provided with an angle adjustment member. When the bending angle of the wall of the black light guide tube is 90° and a shadow appears on the picture taken by the imaging component, the angle adjustment member adjusts the angle of the filter in space to reduce the filtering effect of the filter on the light and increase the amount of light reaching the imaging component so that the imaging component can take clear pictures.

[0015] Optionally, the adjustment assembly includes a connecting rod and a counterweight ring, the connecting rod is slidably mounted on the mounting frame, the counterweight ring is mounted on the inner wall of the black light guide tube, and the counterweight ring is coaxially arranged with the black light guide tube, and the connecting rod is fixedly connected to the counterweight ring.

[0016] Optionally, the angle adjustment member includes a rotating shaft and a clamping claw, the rotating shaft is rotatably mounted on the mounting frame, the clamping claw is mounted on the rotating shaft, and the clamping claw clamps the filter.

[0017] In a second aspect, the present application provides a laser diode package testing method, based on the above-mentioned laser diode package testing device, comprising the following steps:

[0018] S1: Start the driving assembly to move the mounting frame until the current and voltage test assembly contacts the pin of the laser diode, the output end of the imaging assembly, the filter, and the light source of the laser diode are all located in the black light guide and on the same straight line, and the laser diode is in a light-emitting state;

[0019] S2: The current and voltage test component transmits the measured data to the control center, and the imaging component transmits the captured image and the detection data to the control center;

[0020] S3: When the imaging component detects a light spot in the image, the adjusting component reduces the angle of the black light guide tube wall; when the imaging component detects a shadow in the image, the adjusting component increases the angle of the black light guide tube wall to obtain a clearer image and accurate test data;

[0021] S4: When the angle of the black light guide tube wall is adjusted to the maximum, the imaging component detects that a shadow appears in the image, and the angle adjustment member adjusts the angle of the filter in space, reducing the filtering effect of the filter on light, allowing more light to reach the imaging component, thereby obtaining a clearer image and accurate test data;

[0022] S5: After the detection is completed, repeat the above steps to detect another laser diode on the carrier plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the laser diode needs to be tested, the driving component is started, and the driving component drives the mounting frame to move in space until the current and voltage test component abuts the pin at the lower end of the laser diode. The current and voltage component can test the circuit performance of the laser diode, and the imaging component is located above the laser diode at this time. The imaging component can take pictures of the outer surface of the laser diode to detect whether there are cracks, gaps, etc. on the surface of the laser diode. The present application can simultaneously detect the quality of the laser diode in two aspects, which greatly simplifies the detection steps of the laser diode and improves the detection efficiency and production efficiency of the laser diode. In addition, when the current and voltage test component is detecting the laser diode, the laser diode is in a power-on state and the laser diode is in a light-emitting state. Therefore, the imaging component does not need additional fill light when taking pictures, that is, the present device can also be used for detection in poor light or dark environments, which greatly improves the practicality of the present device.

[0025] 2. Since the device in the present application is used to test laser diodes, and the laser emitted by the laser diode has extremely high energy, when the imaging component takes a picture of the surface of the laser diode, the laser with high energy may cause damage to the lens of the imaging component. The setting of the filter can filter most of the light emitted by the laser diode, so that the light reaching the lens of the imaging component is in a normal amount. In order to avoid as much as possible the external excess light or the reflection and refraction of the laser from entering the lens of the imaging component, causing the occurrence of light spots in the image, the black light guide can wrap the laser diode, the filter and the lens of the imaging component inside itself. Therefore, the black light guide can isolate the influence of external light on the lens of the imaging component, and the black tube wall can absorb the excess light emitted by the laser diode, so that part of the light can reach the lens of the imaging component relatively stably, thereby improving the imaging quality of the imaging component, thereby improving the accuracy of the detection of this device;

[0026] 3. The black light guide in the present application is configured as a bellows. When the imaging component takes a picture of the laser diode, the black light guide needs to wrap the laser diode, and multiple laser diodes are placed on the carrier plate. After the device completes the detection of one of the laser diodes, the black light guide needs to first move away from the detected laser diode, then move to the top of another laser diode, and then approach and wrap the other laser diode. In order to ensure the accuracy of the detection equipment as much as possible, the position of the detection components on the detection equipment is selected in advance, so it is not convenient to move at will. The positions of the imaging component, filter and laser diode are relatively fixed, while the bellows can be partially extended and retracted, so that it can simultaneously meet the requirements of wrapping different laser diodes and ensuring that the detection component does not move, thereby ensuring the stability of the detection component. In addition, since the wall of the bellows is corrugated, the bellows has a larger inner wall area than a straight tube, and the excess light can be reflected more times in the bellows, so that the black light guide has a better absorption effect on the excess light, further improving the imaging quality of the imaging component.

[0027] 4. When shadows appear in the pictures taken by the imaging component, it means that too little light reaches the lens of the imaging component at this time; when light spots appear in the pictures taken by the imaging component, it means that too little light reaches the lens of the imaging component at this time. Therefore, when shadows appear in the pictures taken by the imaging component, the curvature of the black light pipe wall can be reduced by adjusting the component, thereby reducing the number of light reflections in the black light pipe, thereby reducing the amount of light absorbed by the black light pipe, and increasing the number of light lines reaching the lens of the imaging component, thereby making the pictures taken by the imaging component clearer; when light spots appear in the pictures taken by the imaging component, the curvature of the black light pipe wall can be increased by adjusting the component, thereby increasing the number of light reflections in the black light pipe, thereby increasing the amount of light absorbed by the black light pipe, and reducing the number of light lines reaching the lens of the imaging component, thereby making the pictures taken by the imaging component clearer; thereby, the overall detection quality of the imaging component for the laser diode and the adaptability of the detection equipment are improved;

[0028] 5. When the adjustment component adjusts the curvature of the black light pipe wall to the maximum, shadows still appear in the images captured by the imaging component. By adjusting the angle of the filter in space through the angle adjustment component, the filter's filtering effect on the laser can be reduced, thereby increasing the number of pipelines that reach the imaging component lens, making the images captured by the imaging component clearer and further improving the adaptability of the detection equipment.

[0029] 6. The setting of the rotating shaft and the clamping claw. On the one hand, the rotation of the rotating shaft can adjust the angle of the filter in space. On the other hand, when the adjustment component adjusts the curvature of the black light guide tube wall, the angle adjustment component can maintain the stability of the filter position in space, thereby ensuring the imaging quality of the imaging component as much as possible. At the same time, the setting of the filter and the counterweight ring ensures that the black light guide tube will not bend axially when it is extended or shortened, thereby ensuring the stability of the black light guide tube during operation as much as possible and improving the stability of the equipment and the accuracy of equipment detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0031] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0032] Figure 3 is a schematic cross-sectional structural diagram of Example 1 of the present application;

[0033] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part B;

[0034] Figure 5 yes Figure 3 A partial enlarged schematic diagram of part C in the middle;

[0035] Figure 6 yes Figure 3 A partial enlarged schematic diagram of part D in the middle;

[0036] In the figure, 1. Machine base; 11. Slide; 12. Nut; 13. Screw; 14. Drive motor; 15. Load plate; 2. Mounting frame; 3. Drive assembly; 31. Slide groove; 32. Cylinder; 33. Mounting rod; 34. Sliding rod; 35. Bidirectional electric rod; 4. Current and voltage test assembly; 5. Imaging assembly; 6. Filter; 7. Black light guide; 8. Adjustment assembly; 81. Connecting rod; 82. Counterweight ring; 83. Electric push rod; 9. Angle adjustment piece; 91. Rotating rod; 92. Clamp; 93. Rotating motor. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 , further details of this application are given. Example 1

[0038] A laser diode packaging test device, referring to Figure 1 and Figure 2 , including a base 1, a mounting bracket 2, a current and voltage testing component 4 and an imaging component 5.

[0039] The machine base 1 is fixedly installed on the ground, and a slide 11 is fixedly installed on the upper end surface of the machine base 1. A nut 12 is slidably installed on the upper end surface of the slide 11. A screw rod 13 is rotatably connected between the two ends of the slide 11. The nut 12 is threadedly connected to the screw rod 13. A drive motor 14 is installed on one side of the slide 11, and the output shaft of the drive motor 14 is coaxially fixedly connected to the screw rod 13. The drive motor 14 is electrically connected to the control center of the equipment.

[0040] The upper end face of the nut 12 is connected to a carrier plate 15. The carrier plate 15 in this embodiment is configured to be an inverted U-shape. A certain space is left between the lower end face of the carrier plate 15 and the upper end face of the nut 12. A plurality of placement grooves for placing laser diodes are arranged in an array on the carrier plate 15. When the laser diode is located inside the placement groove, the light-emitting end of the laser diode is located above the carrier plate 15, and the pin of the laser diode is located below the carrier plate 15.

[0041] Reference Figure 2 and Figure 3, a sliding groove rail 31 is provided on the machine base 1, and the mounting frame 2 is slidably installed in the sliding groove rail 31. A driving component 3 that drives the mounting frame 2 to slide on the machine base 1 is provided. The driving component 3 in this embodiment is set as a cylinder 32, and the output shaft of the cylinder 32 is fixedly connected to the mounting frame 2. A sliding groove is provided at one end of the mounting frame 2 close to the bearing plate 15, and a bidirectional electric rod 35 is provided in the sliding groove. Two sliding rods 34 are also slidably provided in the sliding groove. The two sliding rods 34 are respectively located on both sides of the bidirectional electric rod 35. The sliding rod 34 is fixedly connected to the output end of the bidirectional electric rod 35. The two sliding rods 34 are arranged opposite to each other in the vertical direction, and the bearing plate 15 is located between the two sliding rods 34. It should be noted that the moving direction of the nut 12 in this embodiment is perpendicular to the moving direction of the mounting frame 2 (combined with Figure 4 ).

[0042] The current and voltage testing component 4 in this embodiment is configured as a multimeter, which is electrically connected to the control center of the device. The output end of the multimeter is connected to the sliding rod 34 at the lower end through a wire. Two metal balls connected to the wire are provided on the sliding rod 34 at the lower end. The two metal balls correspond one-to-one to the two pins of one of the laser diodes on the supporting plate 15.

[0043] A mounting rod 33 is also fixedly connected to the mounting frame 2. The mounting rod 33 is located at the upper end of the two sliding rods 34, and the mounting rod 33 and the two sliding rods 34 in this embodiment are located on the same plane. The imaging component 5 is fixedly mounted on the mounting rod 33. The imaging component 5 in this embodiment is configured as a high-definition camera. The output end of the high-definition camera is arranged downwardly. The metal ball located on the lower end sliding rod 34, the output end of the laser diode and the output end of the high-definition camera are located on the same axis. The high-definition camera is also electrically connected to the control center of this device.

[0044] In this embodiment, a black light guide tube 7 is also fixedly connected to the outer wall of the output end of the high-definition camera. The other end of the black light guide tube 7 is fixedly connected to the sliding rod 34 located at the upper end. The black light guide tube 7 in this embodiment is coaxially arranged with the output end of the high-definition camera, and the black light guide tube 7 in this embodiment is configured as a corrugated tube. A filter 6 is coaxially fixedly connected to the inner peripheral wall of the black light guide tube 7. The filter 6 in this embodiment is located relatively close to the high-definition camera.

[0045] When the laser diode on the carrier plate 15 needs to be tested, the drive motor 14 is started to drive the screw rod 13 to rotate, and the screw rod 13 drives the nut 12 and the carrier plate 15 on the nut 12 to move to the specified position, and then the cylinder 32 is started, and the cylinder 32 drives the mounting frame 2 to move in the direction close to the carrier plate 15 until the carrier plate 15 is located between the two sliding rods 34, and then the bidirectional electric rod 35 is started to drive the two sliding rods 34 to move in the direction close to each other until the metal ball on the lower end sliding rod 34 abuts against the pin of one of the laser diodes. At the same time, the upper end sliding rod 34 also drives the black light guide 7 has one end close to the carrier plate 15 in contact with the carrier plate 15, and the laser diode is located in the black light guide 7. When the metal ball on the lower end sliding rod 34 is in contact with the pin of the laser diode, the current and voltage test component 4 will provide a stable current to the laser diode, so the laser diode will emit light, and the current and voltage test component 4 will transmit various data to the control center for analysis to determine whether the laser diode is qualified; if the laser diode does not emit light or the current and voltage test component 4 does not detect any current passing through, it means that there is a problem with the internal circuit of the laser diode, and it is directly determined to be an unqualified product.

[0046] When the laser diode can emit light normally and the circuit is normal, the light emitted by the laser diode will reach the output end of the high-definition camera, and the high-definition camera will take a picture of the outer surface of the laser diode, and then transmit the taken picture to the control center for analysis, and then judge whether the laser diode is qualified based on whether there are cracks, depressions and other features on the surface of the laser diode; when the laser diode is tested, the bidirectional electric rod 35 is started to drive the two sliding rods 34 to move in the direction away from each other until the metal ball on the lower sliding rod 34 is separated from the laser diode, and the black light guide 7 on the upper sliding rod 34 is separated from the carrier plate 15, and the drive motor 14 is started to drive the screw rod 1 3 rotates, and then drives the nut 12 and the supporting plate 15 on the nut 12 to move horizontally, so that the metal ball on the lower end sliding rod 34 moves to the right below another laser diode and the output end of the high-definition camera on the mounting rod 33 is located right above another laser diode, and then repeats the above operation to detect the new laser diode; at the same time, when all the laser diodes in a row on the supporting plate 15 have been detected, the nut 12 and the supporting plate 15 on the nut 12 no longer need to be moved, and the mounting frame 2 is driven to move by the cylinder 32, thereby driving the sliding rod 34 and the mounting rod 33 to move along the longitudinal direction of the supporting plate 15, so as to detect the new diode.

[0047] The current and voltage testing component 4 and the imaging component 5 in this embodiment can simultaneously detect two aspects of the quality of the laser diode, which greatly simplifies the detection steps of the laser diode and improves the detection efficiency and production efficiency of the laser diode; in addition, when the current and voltage testing component 4 detects the laser diode, the laser diode is in a powered state and the laser diode is in a light-emitting state. Therefore, the imaging component 5 does not require additional fill light when taking pictures, that is, the device can also be used for detection in poor light or dark environments, which greatly improves the practicality of the device.

[0048] At the same time, since the device in this embodiment is used to test laser diodes, and the laser emitted by the laser diode has extremely high energy, when the imaging component 5 takes a picture of the surface of the laser diode, the laser with high energy may cause damage to the lens of the imaging component 5 and the photosensitive element in the imaging component 5. The setting of the filter 6 can filter most of the light emitted by the laser diode, so that the light reaching the lens of the imaging component 5 is at a normal amount. In order to avoid external excess light or reflection and refraction of the laser from entering the lens of the imaging component 5, causing light spots to appear in the image, the black light guide 7 can wrap the laser diode, the filter 6 and the lens of the imaging component 5 inside itself. Therefore, the black light guide 7 can isolate the influence of external light on the lens of the imaging component 5, and the black tube wall can absorb the excess light scattered by the laser diode, so that part of the light can reach the lens of the imaging component 5 relatively stably, thereby making the pictures taken by the imaging component 5 clearer, and the control center can better analyze the pictures of the laser diode, thereby improving the imaging quality of the imaging component 5 and improving the accuracy of the detection of this device.

[0049] Among them, the black light guide tube 7 in this embodiment is set as a corrugated tube. When the imaging component 5 takes a picture of the laser diode, the black light guide tube 7 needs to wrap the laser diode, and multiple laser diodes are placed on the carrier plate 15. When the device completes the detection of one of the laser diodes, the black light guide tube 7 needs to first move away from the laser diode that has been detected, and then move above another laser diode, and then approach and wrap the other laser diode. In order to ensure the accuracy of the detection device as much as possible, the position of the detection component on the detection device is selected in advance, so it is not convenient to move it at will. The positions of the imaging component 5, the filter 6 and the laser diode are relatively fixed. Therefore, Compared with a straight tube, when the corrugated tube in this embodiment needs to be away from the laser diode that has been detected, the black light guide tube 7 in this embodiment can be partially extended and retracted without moving the imaging component 5, the filter 6 and other detection components, thereby being able to simultaneously meet the needs of wrapping different laser diodes and ensuring that the detection component does not move, thereby ensuring the stability of the detection component; in addition, since the tube wall of the corrugated tube is wrinkled, the corrugated tube has a larger inner wall area than the straight tube, and the excess light can be reflected more times in the corrugated tube, so that the black light guide tube 7 has a better absorption effect on the excess light, further improving the imaging quality of the imaging component 5.

[0050] Reference Figure 3 、 Figure 5 and Figure 6 In this embodiment, the mounting frame 2 is provided with an adjustment component 8 for adjusting the curvature of the tube wall of the black light guide tube 7. The adjustment component 8 includes a connecting rod 81 and a counterweight ring 82.

[0051] One end of the connecting rod 81 is also slidably set in the slide groove on the mounting frame 2. The mounting frame 2 is also provided with an electric push rod 83, which is arranged in the vertical direction. The output shaft of the electric push rod 83 is fixedly connected to the connecting rod 81, and the counterweight ring 82 is coaxially fixedly installed on the inner wall of the black light guide tube 7. The end of the connecting rod 81 away from the mounting frame 2 is fixedly connected to the counterweight ring 82. In this embodiment, the connecting rod 81 and the counterweight ring 82 are fixedly connected by clamps 92. The two clamps 92 fix the counterweight ring 82. The tube wall of the black light guide tube 7 is located between the clamps 92 and the counterweight ring 82. The counterweight ring 82 in this embodiment is located below the filter 6.

[0052] When a shadow appears in the picture taken by the imaging component 5, it means that too little light reaches the lens of the imaging component 5 at this time; when a light spot appears in the picture taken by the imaging component 5, it means that too little light reaches the lens of the imaging component 5 at this time. Therefore, when a shadow appears in the picture taken by the imaging component 5, the electric push rod 83 is started. When the electric push rod 83 is extended, the electric push rod 83 drives the connecting rod 81 and the counterweight ring 82 to move downward. At this time, the black light pipe 7 is stretched, so the curvature of the wall of the black light pipe 7 is reduced, thereby reducing the number of light reflections in the black light pipe 7, thereby reducing the amount of light absorbed by the black light pipe 7, and increasing the number of pipelines reaching the lens of the imaging component 5. , thereby making the pictures taken by the imaging component 5 clearer; when a light spot appears in the picture taken by the imaging component 5, the electric push rod 83 is started. When the electric push rod 83 contracts, the electric push rod 83 drives the connecting rod 81 and the counterweight ring 82 to move upward. At this time, the black light guide tube 7 is compressed. Therefore, the curvature of the tube wall of the black light guide tube 7 increases, thereby increasing the number of light reflections in the black light guide tube 7, thereby increasing the amount of light absorbed by the black light guide tube 7, and reducing the pipeline reaching the lens of the imaging component 5, thereby making the pictures taken by the imaging component 5 clearer; thereby, the overall detection quality of the imaging component 5 for the laser diode and the adaptability of the detection equipment are improved.

[0053] In addition, refer to Figure 3 and Figure 6 In this embodiment, the mounting frame 2 is also provided with an adjusting member for adjusting the angle of the filter 6 in space. The adjusting member includes a rotating shaft and a clamping claw 92. The rotating shaft is rotatably mounted on the mounting frame 2, and the clamping claw 92 is fixedly mounted on the end of the rotating shaft away from the mounting frame 2. The clamping claw 92 clamps the filter 6, and the black light guide 7 is located between the filter 6 and the clamping claw 92. A rotating motor 93 for driving the rotating shaft to rotate is provided on the mounting frame 2, and the output shaft of the rotating motor 93 is coaxially fixedly connected to the rotating shaft.

[0054] Since when the adjustment component 8 adjusts the curvature of the wall of the black light-guiding tube 7 to the maximum, shadows may still appear in the picture taken by the imaging component 5, the rotating motor 93 is started, and the rotating motor 93 drives the rotating shaft to rotate, thereby driving the filter 6 to shift a certain angle in space. Since under normal circumstances of the equipment, the angle of the filter 6 is optimal, it can have the best filtering effect on light. Therefore, when the angle of the filter 6 in space is shifted, the filtering effect of the filter 6 on the laser can be reduced, thereby increasing the light reaching the lens of the imaging component 5, thereby making the picture taken by the imaging component 5 clearer and further improving the adaptability of the detection equipment.

[0055] Secondly, the arrangement of the rotating shaft and the clamping claw 92, on the one hand, the rotation of the rotating shaft can adjust the angle of the filter 6 in space, and on the other hand, when the adjustment component 8 adjusts the curvature of the tube wall of the black light guide 7, the angle adjustment component 9 can maintain the stability of the position of the filter 6 in space, thereby ensuring the imaging quality of the imaging component 5 as much as possible. At the same time, the arrangement of the filter 6 and the counterweight ring 82 makes it possible for the black light guide 7 to have two supporting points in space, so that the black light guide 7 will not bend axially when it is extended or shortened, thereby ensuring the stability of the black light guide 7 during operation as much as possible and improving the stability of the equipment and the accuracy of equipment detection. Example 2

[0056] A laser diode package testing method, based on the above-mentioned laser diode package testing device, comprises the following steps:

[0057] S1: Start the driving assembly 3 to move the mounting frame 2 until the current and voltage test assembly 4 contacts the pin of the laser diode, the output end of the imaging assembly 5, the filter 6, and the light source of the laser diode are all located in the black light guide 7 and on the same straight line, and the laser diode is in a light-emitting state;

[0058] S2: The current and voltage test component 4 transmits the measured data to the control center, and the imaging component 5 transmits the captured image and the detection data to the control center;

[0059] S3: When the imaging component 5 detects a light spot in the image, the adjusting component 8 reduces the angle of the tube wall of the black light guide 7; when the imaging component 5 detects a shadow in the image, the adjusting component 8 increases the angle of the tube wall of the black light guide 7 to obtain a clearer image and accurate test data;

[0060] S4: When the wall angle of the black light guide 7 is adjusted to the maximum, the imaging component 5 detects that a shadow appears in the image, and the angle adjustment member 9 adjusts the angle of the filter 6 in space. The filtering effect of the filter 6 on light is reduced, and more light reaches the imaging component 5, thereby obtaining a clearer image and accurate test data;

[0061] S5: After the detection is completed, repeat the above steps to detect another laser diode on the carrier plate 15.

[0062] Through the above-mentioned testing method, not only can the laser diode be tested efficiently, but also the laser diode can be tested with high quality, which greatly improves the production efficiency and production quality of the laser diode.

[0063] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A laser diode packaging test device, characterized in that: include: A machine base (1) is provided with a supporting plate (15) for supporting a laser diode at its upper end; a mounting frame (2) is slidably mounted on the machine base (1), and a driving component (3) for driving the mounting frame (2) to move in multiple directions is provided on the machine base (1); a current and voltage testing component (4) is mounted on the mounting frame (2) and is located below the supporting plate (15); an imaging component (5) is mounted on the mounting frame (2) and is located above the supporting plate (15), and when the current and voltage testing component (4) is testing a certain laser diode, the imaging component (5) can simultaneously perform surface crack detection on the laser diode; A filter (6) is provided on the mounting frame (2), and the filter (6) is located between the imaging component (5) and the laser diode, and the filter (6) is used to filter the light from the laser diode to the imaging component (5); A black light guide tube (7) is further provided on the mounting frame (2), and the black light guide tube (7) is configured as a corrugated tube. One end of the black light guide tube (7) is connected to the output end of the imaging assembly (5), and the other end of the black light guide tube (7) abuts against the supporting plate (15). The filter (6) is fixedly mounted on the inner peripheral wall of the black light guide tube (7), and one of the laser diodes on the supporting plate (15) is located inside the black light guide tube (7); The mounting frame (2) is provided with an adjusting component (8) for adjusting the curvature of the tube wall of the black light guide tube (7). When more shadows appear on the image captured by the imaging component (5), the adjusting component (8) increases the curvature of the tube wall of the black light guide tube (7); when more light spots appear on the image captured by the imaging component (5), the adjusting component (8) decreases the curvature of the tube wall of the black light guide tube (7); The mounting frame (2) is also provided with an angle adjustment member (9). When the curvature of the wall of the black light guide tube (7) is 90° and a shadow appears on the image captured by the imaging assembly (5), the angle adjustment member (9) adjusts the angle of the filter (6) in space.

2. The laser diode packaging and testing device according to claim 1, wherein: The driving component (3) can drive the current and voltage test component (4) and the black light guide (7) to move in a direction of approaching or moving away from each other at one end close to the carrier plate (15) until the black light guide (7) abuts against the carrier plate (15) and the current and voltage test component (4) abuts against the pin of the laser diode. The setting of the bellows can make the black light guide (7) expand and contract, thereby facilitating the imaging component (5) to test each laser diode on the carrier plate (15) individually. The inner wall area of ​​the bellows is relatively larger, which can absorb more excess light, further improving the imaging quality of the imaging component (5).

3. The laser diode packaging and testing device according to claim 1, wherein: The adjustment assembly (8) includes a connecting rod (81) and a counterweight ring (82), wherein the connecting rod (81) is slidably mounted on the mounting frame (2), and the counterweight ring (82) is mounted on the inner wall of the black light guide tube (7), and the counterweight ring (82) and the black light guide tube (7) are coaxially arranged, and the connecting rod (81) and the counterweight ring (82) are fixedly connected.

4. The laser diode packaging and testing device according to claim 1, wherein: The angle adjustment member (9) comprises a rotating shaft and a clamping claw (92), wherein the rotating shaft is rotatably mounted on the mounting frame (2), and the clamping claw (92) is mounted on the rotating shaft, and the clamping claw (92) clamps the filter (6).

5. A laser diode package testing method, based on the laser diode package testing device according to any one of claims 1 to 4. The following steps are involved: S1: Start the driving component (3) to drive the mounting frame (2) to move until the current and voltage test component (4) abuts against the pin of the laser diode, the output end of the imaging component (5), the filter (6) and the light source of the laser diode are all located in the black light guide (7) and on the same straight line, and the laser diode is in a light-emitting state; S2: The current and voltage test component (4) transmits the measured data to the control center, and the imaging component (5) transmits the captured image and the detection data to the control center; S3: When the imaging component (5) detects that a light spot appears in the image, the adjustment component (8) adjusts the angle of the tube wall of the black light guide (7) to be smaller; when the imaging component (5) detects that a shadow appears in the image, the adjustment component (8) adjusts the angle of the tube wall of the black light guide (7) to be larger, so as to obtain a clearer image and accurate test data; S4: When the angle of the tube wall of the black light guide (7) is adjusted to the maximum, the imaging component (5) detects that a shadow appears in the image, and the angle adjustment member (9) adjusts the angle of the filter (6) in space, so that the filtering effect of the filter (6) on light is reduced, and more light reaches the imaging component (5), thereby obtaining a clearer image and accurate test data; S5: After the detection is completed, repeat the above steps to detect another laser diode on the carrier plate (15).

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