Laser diode packaging test device and test method thereof

Abstract

The invention discloses a laser diode packaging testing device and a testing method thereof, and relates to the technical field of laser diode detection.The laser diode packaging testing device comprises a machine base, a mounting frame, a current and voltage testing assembly and an imaging assembly, a bearing plate is arranged at the upper end of the machine base, and the mounting frame is slidably mounted on the machine base; the base is provided with a driving assembly for driving the mounting rack to move in multiple directions, a current and voltage testing assembly is mounted on the mounting rack and located below the bearing plate, an imaging assembly is mounted on the mounting rack, and when the current and voltage testing assembly tests a certain laser diode, the imaging assembly is located below the mounting rack and located below the bearing plate. The imaging assembly can perform surface crack detection on the laser diode at the same time. According to the invention, the detection steps of the laser diode can be simplified, so that the detection efficiency and the production efficiency of the laser diode are improved.

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 diode, also known as semiconductor laser, is an electronic device that uses semiconductor PN junction to convert electrical energy into light energy and generate laser. Due to its small size, light weight, and the excellent directivity and straightness of the laser it produces, laser diodes are widely used in optical communications, medical treatment, sensing and other fields.

[0003] After the current laser diodes are packaged, they usually need to be inspected for damage, forward voltage and current tests, and optical output tests. However, the laser diodes need to be tested for a large number of values, and each test of the laser diode requires corresponding equipment. The overall testing steps are relatively cumbersome and time-consuming, which greatly reduces the production efficiency of the laser diodes. Summary of the invention

[0004] The purpose of the present application is to provide a laser diode packaging test device and a test 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 the first aspect, the present application provides a laser diode packaging test device that adopts the following technical solution: A machine base, with a bearing plate for bearing the laser diode disposed on the upper end; A mounting frame, slidably mounted on the base, wherein the base is provided with a driving assembly for driving the mounting frame to move in multiple directions; A current and voltage test assembly is mounted on the mounting frame and is located below the bearing plate; The imaging component is mounted on the mounting frame and is located above the bearing plate. When the current and voltage testing component is testing a laser diode, the imaging component can simultaneously detect cracks on the surface of the laser diode.

[0006] Optionally, a filter is provided on the mounting frame, 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.

[0007] Optionally, a black light guide tube is also provided on the mounting frame, one end of the black light guide tube is connected to the output end of the imaging component, 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, one of the laser diodes on the supporting plate is located inside the black light guide tube, and the black light guide tube can absorb excess light to improve the imaging quality of the imaging component.

[0008] Optionally, the black light guide tube is configured as a corrugated tube, and the driving assembly can drive the current and voltage testing assembly and the end of the black light guide tube close to the supporting plate to move in a direction approaching or moving away from each other until the black light guide tube abuts against the supporting plate and the current and voltage testing assembly abuts against the pin of the laser diode. The configuration of the corrugated tube can enable the black light guide tube to retract and contract, thereby facilitating the imaging assembly to test each laser diode on the supporting plate individually, and the inner wall area of ​​the corrugated tube is relatively larger, which can absorb more excess light, thereby further improving the imaging quality of the imaging assembly.

[0009] Optionally, the mounting frame is provided with an adjusting 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 adjusting 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 adjusting component reduces the curvature of the wall of the black light guide tube.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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: S1: Start the driving component to drive the mounting frame to move until the current and voltage test component abuts against the pin of the laser diode, the output end of the imaging component, 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; 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; S3: When the imaging component detects that a light spot appears in the picture, the adjusting component reduces the angle of the wall of the black light guide tube; when the imaging component detects that a shadow appears in the picture, the adjusting component increases the angle of the wall of the black light guide tube to obtain a clearer picture and accurate test data; S4: When the angle of the wall of the black light guide tube is adjusted to the maximum, the imaging component detects that a shadow appears in the picture, and the angle adjustment member adjusts the angle of the filter in space, so that the filtering effect of the filter on the light is reduced, and more light reaches the imaging component, so as to obtain a clearer picture and accurate test data; S5: After the detection is completed, repeat the above steps to detect another laser diode on the carrier plate.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 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 against 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 detects 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 detected in poor light or dark environments, which greatly improves the practicality of the present device. 2. Since the device in the present application is used to test the laser diode, and the laser emitted by the laser diode has great energy, when the imaging component takes a picture of the surface of the laser diode, the laser with strong energy may damage the lens of the imaging component, and 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, and in order to avoid the external excess light or the reflection and refraction of the laser from entering the lens of the imaging component as much as possible, 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, so 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, so as to improve the imaging quality of the imaging component, thereby improving the accuracy of the detection of this device; 3. The black light guide in the present application is configured as a corrugated tube. When the imaging component takes a picture of the laser diode, the black light guide needs to wrap the laser diode, and a plurality of laser diodes are placed on the carrier plate. When the device completes the detection of one of the laser diodes, the black light guide needs to first move away from the laser diode that has been detected, and 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 device as much as possible, the positions of the detection components on the detection device are all selected in advance, so it is not convenient to move them at will. The positions of the imaging component, the filter and the laser diode are relatively fixed, and the corrugated tube can be partially retracted, so that different laser diodes can be wrapped at the same time and the detection component can be ensured not to move, thereby ensuring the stability of the detection component. In addition, since the 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 has a better absorption effect on the excess light, further improving the imaging quality of the imaging component. 4. When a shadow appears in the picture taken by the imaging component, it means that too little light reaches the lens of the imaging component at this time; when a light spot appears in the picture taken by the imaging component, it means that too little light reaches the lens of the imaging component at this time. Therefore, when a shadow appears in the picture taken by the imaging component, the curvature of the wall of the black light guide tube can be reduced by adjusting the component, thereby reducing the number of light reflections in the black light guide tube, thereby reducing the amount of light absorbed by the black light guide tube, and increasing the number of pipelines reaching the lens of the imaging component, thereby making the picture taken by the imaging component clearer; when a light spot appears in the picture taken by the imaging component, the curvature of the wall of the black light guide tube can be increased by adjusting the component, thereby increasing the number of light reflections in the black light guide tube, thereby increasing the amount of light absorbed by the black light guide tube, and reducing the number of pipelines reaching the lens of the imaging component, thereby making the picture taken by the imaging component clearer; thereby improving the detection quality of the imaging component for the laser diode and the adaptability of the detection equipment as a whole; 5. When the adjustment component adjusts the curvature of the black light pipe wall to the maximum, shadows still appear in the pictures taken by the imaging component. By adjusting the angle of the filter in space through the angle adjustment member, the filtering effect of the filter on the laser can be reduced, thereby increasing the number of pipelines that reach the imaging component lens, making the pictures taken by the imaging component clearer and further improving the adaptability of the detection equipment; 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 wall of the black light guide tube, the angle adjustment member can maintain the stability of the position of the filter 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 prevents the black light guide tube from axial bending 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

[0015] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A; Figure 3 is a schematic cross-sectional structural diagram of Example 1 of the present application; Figure 4 yes Figure 3 A partial enlarged schematic diagram of part B; Figure 5 yes Figure 3 A partial enlarged schematic diagram of part C in the middle; Figure 6 yes Figure 3 A partial enlarged schematic diagram of part D in the middle; In the figure, 1. base; 11. slide; 12. nut; 13. screw; 14. drive motor; 15. load-bearing plate; 2. mounting frame; 3. drive assembly; 31. sliding groove rail; 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 member; 91. rotating rod; 92. clamping claw; 93. rotating motor. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-6 , further details of this application are given. Example 1

[0017] A laser diode packaging test device, referring to Figure 1 and Figure 2 , including a base 1, a mounting frame 2, a current and voltage testing component 4 and an imaging component 5.

[0018] The machine base 1 is fixedly installed on the ground, 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, and the drive motor 14 is electrically connected to the control center of the equipment.

[0019] The upper end surface of the nut 12 is connected to a carrier plate 15. The carrier plate 15 in this embodiment is arranged in an inverted U shape. A certain space is left between the lower end surface of the carrier plate 15 and the upper end surface 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.

[0020] Reference Figure 2 and Figure 3A sliding groove 31 is provided on the machine base 1, and the mounting frame 2 is slidably installed in the sliding groove 31. A driving component 3 for driving 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 relatively 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 ).

[0021] 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.

[0022] 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, and the output end of the high-definition camera is arranged downward. 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, and the high-definition camera is also electrically connected to the control center of this device.

[0023] In the present embodiment, a black light guide tube 7 is also fixedly connected to the outer wall of the output end of the high-definition camera, and 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 the present embodiment is coaxially arranged with the output end of the high-definition camera, and the black light guide tube 7 in the present embodiment is configured as a corrugated tube. A filter 6 is coaxially fixedly connected to the inner wall of the black light guide tube 7, and the filter 6 in the present embodiment is located relatively close to the high-definition camera.

[0024] When the laser diode on the carrier plate 15 needs to be tested, the driving 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 sliding rod 34 abuts against the pin of one of the laser diodes, and at the same time, the upper sliding rod 34 also drives the black light guide 7 has one end close to the carrier plate 15 butted against 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 butts against the pin of the laser diode, the current and voltage test component 4 provides a stable current for 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 that there is 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.

[0025] 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 according to whether there are cracks, depressions and other features on the surface of the laser diode; when the inspection of the laser diode is completed, the two-way 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 bearing 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 bearing plate 15 have been detected, the nut 12 and the bearing plate 15 on the nut 12 do not need to be moved anymore, 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 bearing plate 15, so as to detect the new diode.

[0026] 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-on state and the laser diode is in a light-emitting state, so 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.

[0027] At the same time, since the device in this embodiment is used to test the laser diode, and the laser emitted by the laser diode has great energy, when the imaging component 5 takes a picture of the surface of the laser diode, the laser with strong energy may damage the lens of the imaging component 5 and the photosensitive element in the imaging component 5, and 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 in a normal amount, and 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 5, causing the occurrence of light spots 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, so that 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, so that the photos taken by the imaging component 5 are clearer, and the control center can better analyze the photos of the laser diode, thereby improving the imaging quality of the imaging component 5 and improving the accuracy of the detection of this equipment.

[0028] 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 a plurality of 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 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 device as much as possible, the positions of the detection components on the detection device are all selected in advance, so it is not convenient to move them at will, and the positions of the imaging component 5, the filter 6 and the laser diode are all relatively fixed. Therefore, Compared with a straight tube, when the corrugated tube in the present embodiment needs to be away from the laser diode that has been detected, the black light guide tube 7 in the present embodiment can be partially retracted and retracted without moving the imaging component 5, the filter 6 and other detection components, thereby being able to simultaneously wrap different laser diodes and ensure 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 excess light can be reflected more times in the corrugated tube, thereby making the black light guide tube 7 better at absorbing excess light, further improving the imaging quality of the imaging component 5.

[0029] 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 bending degree 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.

[0030] 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. 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.

[0031] 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 guide tube 7 is stretched, so the bending degree of the tube wall of the black light guide tube 7 is reduced, thereby reducing the number of light reflections in the black light guide tube 7, thereby reducing the amount of light absorbed by the black light guide tube 7, so that more lines reach the lens of the imaging component 5. , thereby making the picture 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, so 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, reducing the pipeline reaching the lens of the imaging component 5, and thereby making the picture taken by the imaging component 5 clearer; thereby, the detection quality of the imaging component 5 for the laser diode and the adaptability of the detection equipment are improved as a whole.

[0032] 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, and 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. The mounting frame 2 is provided with a rotating motor 93 for driving the rotating shaft to rotate, and the output shaft of the rotating motor 93 is coaxially and fixedly connected with the rotating shaft.

[0033] When the adjustment component 8 adjusts the curvature of the wall of the black light guide tube 7 to the maximum, shadows may still appear in the picture taken by the imaging component 5. Therefore, the rotating motor 93 is started. The rotating motor 93 drives the rotating shaft to rotate, thereby driving the filter 6 to shift a certain angle in space. In addition, under normal circumstances, the angle of the filter 6 is optimal and can best filter the light. Therefore, when the angle of the filter 6 in space is shifted, the filtering effect of the filter 6 on the laser is 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.

[0034] 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 adjusting component 8 adjusts the curvature of the wall of the black light guide tube 7, the angle adjusting 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 allows the black light guide tube 7 to have two supporting points in space, so the black light guide tube 7 will not bend axially when it is extended or shortened, thereby ensuring the stability of the black light guide tube 7 during operation as much as possible and improving the stability of the equipment and the accuracy of equipment detection. Example 2

[0035] A laser diode package testing method, based on the above-mentioned laser diode package testing device, comprises the following steps: 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 picture, the adjusting component 8 adjusts the wall angle of the black light guide tube 7 to be smaller; when the imaging component 5 detects that a shadow appears in the picture, the adjusting component 8 adjusts the wall angle of the black light guide tube 7 to be larger, so as to obtain a clearer picture and accurate test data; S4: When the wall angle of the black light guide tube 7 is adjusted to the maximum, the imaging component 5 detects that a shadow appears in the picture, and the angle adjustment member 9 adjusts the angle of the filter 6 in space, the filtering effect of the filter 6 on the light is reduced, and more light reaches the imaging component 5, so as to obtain a clearer picture and accurate test data; S5: After the detection is completed, repeat the above steps to detect another laser diode on the carrier plate 15.

[0036] Through the above-mentioned testing method, not only the laser diode can 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.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser diode packaging test device, characterized in that: include: A machine base (1), the upper end of which is provided with a carrying plate (15) for carrying a laser diode; A mounting frame (2) is slidably mounted on the machine base (1), and a driving component (3) is provided on the machine base (1) for driving the mounting frame (2) to move in multiple directions; A current and voltage test assembly (4) is mounted on the mounting frame (2) and is located below the bearing plate (15); An imaging component (5) is mounted on the mounting frame (2) and is located above the bearing plate (15). 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.

2. A laser diode packaging test device according to claim 1, characterized in that: The mounting frame (2) is provided with a filter (6), the filter (6) being located between the imaging component (5) and the laser diode, and the filter (6) being used to filter light rays from the laser diode reaching the imaging component (5).

3. The laser diode packaging test device according to claim 2, characterized in that: A black light guide tube (7) is also provided on the mounting frame (2); one end of the black light guide tube (7) is connected to the output end of the imaging component (5); the other end of the black light guide tube (7) is abutted against the supporting plate (15); the filter (6) is fixedly mounted on the inner peripheral wall of the black light guide tube (7); one of the laser diodes on the supporting plate (15) is located inside the black light guide tube (7); the black light guide tube (7) is capable of absorbing excess light to improve the imaging quality of the imaging component (5).

4. The laser diode packaging and testing device according to claim 3, characterized in that: The black light guide tube (7) is configured as a bellows, and the driving component (3) can drive the current and voltage test component (4) and one end of the black light guide tube (7) close to the carrier plate (15) to move in a direction of approaching or moving away from each other until the black light guide tube (7) abuts against the carrier plate (15) and the current and voltage test component (4) abuts against the pin of the laser diode. The configuration of the bellows can enable the black light guide tube (7) to be extended and retracted, 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, and can absorb more excess light, thereby further improving the imaging quality of the imaging component (5).

5. The laser diode packaging and testing device according to claim 4, characterized in that: 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 a large number of shadows appear on the picture taken by the imaging component (5), the adjusting component (8) increases the curvature of the tube wall of the black light guide tube (7) to reduce the number of refractions of light in the black light guide tube (7), thereby increasing the amount of light reaching the imaging component (5); when a large number of light spots appear on the picture taken by the imaging component (5), the adjusting component (8) decreases the curvature of the tube wall of the black light guide tube (7).

6. The laser diode packaging and testing device according to claim 5, characterized in that: The mounting frame (2) is also provided with an angle adjustment member (9). When the bending angle of the tube wall of the black light guide tube (7) is 90° and a shadow appears on the picture taken by the imaging component (5), the angle adjustment member (9) adjusts the angle of the filter (6) in space to reduce the filtering effect of the filter (6) on light, thereby increasing the amount of light reaching the imaging component (5), so that the imaging component (5) can take clear pictures.

7. The laser diode packaging and testing device according to claim 6, characterized in that: The adjustment assembly (8) comprises a connecting rod (81) and a counterweight ring (82); the connecting rod (81) is slidably mounted on the mounting frame (2); the counterweight ring (82) is mounted in the inner wall of the black light guide tube (7); 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.

8. The laser diode packaging and testing device according to claim 7, characterized in that: The angle adjustment member (9) comprises a rotating shaft and a clamping claw (92); the rotating shaft is rotatably mounted on the mounting frame (2); the clamping claw (92) is mounted on the rotating shaft; and the clamping claw (92) clamps the filter (6).

9. A laser diode package testing method, based on a laser diode package testing device as described in claims 1 to 8, comprising the following steps: S1: starting 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 adjusting component (8) adjusts the angle of the tube wall of the black light guide tube (7) to be smaller; when the imaging component (5) detects that a shadow appears in the image, the adjusting component (8) adjusts the angle of the tube wall of the black light guide tube (7) to be larger, so as to obtain a clearer image and accurate test data; S4: When the wall angle of the black light guide tube (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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