Optical component test fixture
By using positioning cylinder components to support the test parts in the optical component test fixture, the problems of light output concentricity and rotation angle deviation after welding of the laser module are solved, and higher test accuracy and yield rate are achieved.
Patent Information
- Application Number
- CN202411895838.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-04-04
AI Technical Summary
After welding and assembly, the light output concentricity and rotation angle of the existing laser modules have deviations from the requirements, resulting in the failure of the performance test to play the due role.
An optical component test fixture is designed to provide support for the part to be tested using a positioning cylinder assembly to ensure that it does not move after being inserted into the socket, thereby improving the accuracy of the test.
Through the support of the positioning cylinder assembly, the assembly accuracy and testing accuracy of the laser module are improved, ensuring that the performance test results match the user's needs, and improving the yield rate.
Smart Images
Figure CN119756783A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of laser module testing, and in particular to an optical component testing fixture. Background Art
[0002] After the existing laser modules are produced, they need to undergo a characteristics test process. They can only be shipped after passing the characteristics test. However, after shipment, users need to weld and assemble the laser modules with PCBA (Printed Circuit Board Assembly). The current problem is that the light concentricity and rotation angle of the module after welding deviate from the requirements, resulting in the failure of the characteristics test process of the laser modules produced at the production end to play its due role. Summary of the invention
[0003] The main purpose of the present invention is to provide an optical component testing fixture, which aims to solve the technical problem that the characteristic test of the existing laser module fails to achieve the desired effect.
[0004] To achieve the above-mentioned purpose, the optical component testing fixture proposed by the present invention comprises:
[0005] A mounting frame, the mounting frame comprising a frame body;
[0006] A sleeve, wherein a receiving cavity is provided inside the sleeve, one end of the sleeve is provided on the frame body, and the other end of the sleeve is provided with an insertion hole communicating with the receiving cavity;
[0007] A socket, the socket is arranged in the accommodating cavity, and the insertion port of the socket is arranged toward the insertion hole;
[0008] A positioning cylinder mechanism, wherein a cavity for accommodating a piece to be tested is arranged inside the positioning cylinder mechanism, the positioning cylinder mechanism comprises a first end close to the sleeve and a second end away from the sleeve, the first end being arranged at an end of the sleeve away from the frame body; the second end is provided with an inlet and outlet connected to the accommodating cavity, the positioning cylinder mechanism can provide a vertical upward supporting force for the piece to be tested located in the cavity, so that the end of the piece to be tested facing the socket is in contact with the bottom wall of the cavity facing the socket; the first end is provided with a connecting hole, and the insertion hole and the cavity are connected through the connecting hole.
[0009] In one embodiment, the positioning tube mechanism includes a mounting plate and a positioning tube assembly, one side of the mounting plate is arranged at an end of the sleeve away from the frame body, the other side of the mounting plate is provided with the positioning tube assembly, the positioning tube assembly and the mounting plate form the cavity, the mounting plate is provided with the connecting hole, and the side of the positioning tube assembly away from the mounting plate is provided with the inlet and outlet.
[0010] In one embodiment, a placement area and a mounting area are provided on a side of the mounting plate away from the frame body, and the positioning tube assembly is located in the placement area; the optical element testing fixture also includes a magnet, and the magnet is provided in the mounting area. The material of the sleeve is ferromagnetic material, so that the magnet can adsorb the mounting plate to the sleeve and make the mounting plate fit into the sleeve.
[0011] In one embodiment, the installation area is an annular installation area, the annular installation area is arranged around the placement area, and the magnet is an annular magnet;
[0012] And / or, the material of the mounting plate is ferromagnetic material.
[0013] In one embodiment, the positioning cylinder assembly includes a cylinder body and a positioning piece, the cylinder body is arranged on the mounting plate and forms the cavity with the mounting plate, the inlet and outlet are provided on the side of the cylinder body away from the mounting plate, the side wall of the cylinder body is provided with a positioning hole for the positioning piece to extend into, one end of the positioning piece facing the cavity can abut against the piece to be tested, and the side of the piece to be tested away from the positioning piece abuts against the side wall of the cavity, so that the piece to be tested is stationary relative to the cylinder body.
[0014] In one embodiment, the positioning member includes a threaded fastener, the inner wall of the positioning hole is provided with an internal thread, the threaded fastener is spirally matched with the internal thread, and one end of the threaded fastener facing the cavity abuts against the test piece.
[0015] In one embodiment, the socket is detachably connected to the sleeve.
[0016] In one embodiment, the socket is provided with a first mounting hole, the sleeve is provided with a second mounting hole connected to the first mounting hole, and the optical element testing fixture further includes a positioning screw, which can pass through the first mounting hole and then be screwed together with the second mounting hole.
[0017] In one embodiment, the mounting frame also includes a base, the frame body is connected to the base, the optical element testing fixture also includes a target paper mounting plate, the target paper mounting plate is arranged on the base, the inlet and outlet face the target paper mounting plate, and the target paper mounting plate and the frame body are spaced apart along the axial direction of the cavity.
[0018] In one embodiment, the target paper mounting plate is movably mounted on the base, so that the target paper mounting plate can move relative to the base along the axial direction of the cavity.
[0019] In one embodiment, the sleeve is detachably connected to the frame body.
[0020] In one embodiment, the axial direction of the cavity is parallel to the horizontal direction, the axial direction of the sleeve is parallel to the horizontal direction, and the sleeve is vertically arranged on the frame body.
[0021] The technical solution of the present invention supports the piece to be tested by using a positioning cylinder assembly, thereby reducing the probability of the pin of the piece to be tested moving relative to the socket after being inserted into the socket, thereby providing a guarantee for the end of the piece to be tested provided with the pin to be able to fit with the inner wall of the positioning cylinder mechanism close to the sleeve side, thereby improving the accuracy of the performance test and ensuring that the performance test results can match the user's needs. The piece to be tested can be a structure without the pin in the laser module. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0023] Figure 1 A schematic structural diagram of an embodiment of an optical component testing fixture provided by the present invention;
[0024] Figure 2 A schematic cross-sectional view of a portion of the structure of an embodiment of an optical component testing fixture provided by the present invention;
[0025] Figure 3 A partial structural schematic diagram of an embodiment of an optical component testing fixture provided by the present invention.
[0026] Description of Figure Numbers:
[0027] 100. Optical element test fixture; 1. Mounting frame; 11. Frame body; 12. Base; 121. Waist-shaped hole; 2. Sleeve; 21. Accommodating cavity; 22. Insertion hole; 23. Second mounting hole; 3. Socket; 31. Insertion port; 32. First mounting hole; 4. Positioning tube mechanism; 41. Mounting plate; 411. Placement area; 412. Mounting area; 413. Communication hole; 42. Positioning tube assembly; 421. Tube body; 4211. Positioning hole; 4212. Cavity; 4213. Bottom wall; 4214. Side wall; 4215. Inlet and outlet; 422. Positioning piece; 4221. Threaded fastener; 43. First end; 44. Second end; 5. Magnet; 6. Positioning screw; 7. Target paper mounting plate; 8. Mounting screw;
[0028] 200, laser module; 201, module body; 202, pin.
[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0033] Existing laser modules need to undergo a characteristics test after production, and can only be shipped after passing the characteristics test. However, after shipment, users need to weld and assemble the laser module and PCBA. The current problem is that the light concentricity and rotation angle of the module after welding deviate from the requirements, resulting in the failure of the characteristics test process of the laser modules produced at the production end to play its due role.
[0034] The inventors have discovered that there is no problem with the testing principle of the laser module using the existing fixture, that is, after the pins of the laser module are inserted into the socket, the bottom of the laser module fits against the plane of the fixture to complete the assembly. In this case, there is no problem in conducting the test. However, during the assembly process of the existing laser module, the laser module will be affected by the inertia of gravity, resulting in the bottom of the laser module not being able to fit 100% with the plane of the fixture (the laser module is loose), resulting in uncontrollable offsets in the test positioning and assembly of the existing laser module, resulting in corresponding deviations in the concentricity and rotation angle of the laser module, which in turn results in the low accuracy of the existing laser module testing equipment and failure to achieve the expected testing effect.
[0035] For example, taking the handheld installation of the laser module as an example, the user holds the laser module and inserts the pin of the laser module into the socket, and fits the bottom of the laser module with the plane of the fixture (equivalent to the sleeve of this solution). At this time, because the user holds the laser module, a reliable support force is provided for the laser module to offset the gravity of the laser module. However, when the laser module is assembled, the user removes the hand support, and the laser module will be offset relative to the fixture under the action of gravity, so that the bottom of the laser module can no longer be 100% in contact with the plane of the fixture. This offset will lead to This causes an angular deviation (i.e., rotation angle) between the direction of the emitted light of the laser module after the manual support is removed and the direction of the emitted light of the laser module before the removal. At the same time, the laser module moves slightly downward due to the effect of gravity, which causes a deviation in the concentricity of the laser module after the manual support is removed and before the removal, which in turn causes the test accuracy of the existing fixture to be low. Even if the laser module passes the test, it is difficult for the laser module that has passed the performance test to meet the user's usage requirements due to its own angle and concentricity deviations. It should be noted that concentricity refers to the degree of displacement of the center of a circle, which is a special form of coaxiality. When the measured element is the center (point) of a circle, a hole on a thin workpiece, or the axis of a shaft, the measured axis can be regarded as the measured point, and their coaxiality to the reference axis is the concentricity.
[0036] The present invention provides an optical component testing fixture, aiming to solve the technical problem that the characteristic test of the existing laser module fails to achieve the desired effect.
[0037] See also Figure 1 and Figure 2In one embodiment of the present invention, the optical element test fixture 100 includes a mounting frame 1, a sleeve 2, a socket 3 and a positioning tube mechanism 4. The mounting frame 1 includes a frame body 11; a receiving cavity 21 is arranged inside the sleeve 2, one end of the sleeve 2 is arranged on the frame body 11, and the other end of the sleeve 2 is provided with an insertion hole 22 connected to the receiving cavity 21; the socket 3 is arranged in the receiving cavity 21, and the insertion port 31 of the socket 3 is arranged toward the insertion hole 22; a cavity 4212 for accommodating a test piece is arranged inside the positioning tube mechanism 4, and the positioning tube mechanism 4 includes a cavity 4212 near the receiving cavity 21. The sleeve 2 has a first end 43 and a second end 44 away from the sleeve 2, wherein the first end 43 is arranged at an end of the sleeve 2 away from the frame body 11; the second end 44 is provided with an inlet and outlet 4215 connected to the accommodating cavity 21, and the positioning tube mechanism 4 can provide a vertical upward supporting force for the piece to be tested located in the cavity 4212, so that the end of the piece to be tested facing the socket 3 is attached to the bottom wall 4213 of the cavity 4212 facing the socket 3; the first end 43 is provided with a connecting hole 413, and the insertion hole 22 and the cavity 4212 are connected through the connecting hole 413.
[0038] Among them, the piece to be tested can be a structure in which the pin 202 is removed from the laser module 200, referred to as the module body 201 for short, and the laser module 200 moves toward the inlet and outlet 4215, wherein the pin 202 of the laser module 200 enters the cavity 4212 through the inlet and outlet 4215, and then passes through the connecting hole 413 and the insertion hole 22 in turn and is inserted into the socket 3 through the insertion port 31 of the socket 3, and the module body 201 also enters the cavity 4212 from the inlet and outlet 4215, and the module body 201 continues to move until the left side of the module body 201 (the bottom of the module body 201) is in contact with the bottom wall 4213 of the cavity 4212, at which time the pin 202 is also smoothly inserted into the socket 3, and because the positioning cylinder mechanism 4 can support the module body 201, it is difficult for the module body 201 to move relative to the positioning cylinder assembly 42 under the action of gravity, so that the left side of the module body 201 can be in contact with the bottom wall 4213 of the cavity 4212 13 provides protection, the positioning cylinder assembly 42 is arranged on the sleeve 2, so that the module body 201 is difficult to move relative to the sleeve 2 under the action of gravity, that is, the laser module 200 after assembly, its pin 202 is inserted into the socket 3, and the left side of its module body 201 can maintain contact with the bottom wall 4213 of the cavity 4212, and it itself will not move under the action of gravity, thereby improving the assembly accuracy of the laser module 200; in this case, the laser module 200 is subjected to a characteristic test, so that the concentricity and rotation angle of the output light of the laser module 200 can meet the user's use requirements while meeting the test requirements, thereby improving the test accuracy, so that the production end can play the due effect on the performance test of the laser module 200, thereby avoiding the phenomenon that the performance test is passed at the production end but the user's use requirements cannot be met, and the yield rate of the laser module 200 is improved by the optical component test fixture 100. In addition, the module body 201 is located in the cavity 4212, and the cavity 4212 can also play a positioning role for the module body 201, that is, the side wall of the cavity 4212 abuts against the outer wall of the module body 201, further limiting the movement of the laser module 200. At the same time, by positioning the laser module 200, it can also ensure that the laser module 200 can be accurately installed to the position required for the test, thereby improving the accuracy of the test.
[0039] In one embodiment, the positioning cylinder mechanism 4 includes a mounting plate 41 and a positioning cylinder assembly 42. One side of the mounting plate 41 is arranged at the end of the sleeve 2 away from the frame body 11. The other side of the mounting plate 41 is provided with the positioning cylinder assembly 42. The positioning cylinder assembly 42 and the mounting plate 41 form a cavity 4212. The mounting plate 41 is provided with a connecting hole 413. The side of the positioning cylinder assembly 42 away from the mounting plate 41 is provided with an inlet and outlet 4215. The mounting plate 41 is provided to facilitate the installation of the positioning cylinder mechanism 4; the mounting plate 41 can be bonded to the sleeve 2 or fixed to the sleeve 2 by screws, which is not limited here.
[0040] In one embodiment, a placement area 411 and a mounting area 412 are provided on one side of the mounting plate 41 away from the frame body 11, and the positioning tube assembly 42 is located in the placement area 411; the optical element testing fixture 100 also includes a magnet 5, which is provided in the mounting area 412, and the material of the sleeve 2 is ferromagnetic material, so that the magnet 5 can adsorb the mounting plate 41 to the sleeve 2, and make the mounting plate 41 fit to the sleeve 2. By adding the magnet 5, since the material of the sleeve 2 is ferromagnetic material, the magnet 5 and the sleeve 2 will attract each other, and since the mounting plate 41 is located between the sleeve 2 and the magnet 5, the magnet 5 can rely on the magnetic force to adsorb the mounting plate 41 on the sleeve 2, thereby realizing the magnetic attraction positioning of the mounting plate 41; the use of the magnet 5 to magnetically position the mounting plate 41 is to enable the mounting plate 41 to be adsorbed and attached to the sleeve 2, reduce the probability of the mounting plate 41 moving under the action of external force, and improve the reliability of the positioning of the positioning tube assembly 42. The mounting plate 41 is attached to the sleeve 2 to ensure that the output light of the laser module 200 will not be directly attached to the bottom of the module body 201. There will be no or no large offset, which improves the assembly accuracy of the mounting plate 41, thereby improving the assembly accuracy of the laser module 200 and further improving the accuracy of the test. On the other hand, compared with fastening the mounting plate 41 with screws, using the magnet 5 to adsorb the mounting plate 41 to the sleeve 2 makes it easier for users to install and disassemble, and improves the assembly efficiency of the positioning tube mechanism 4. When a laser module 200 is tested, the user can overcome the suction force of the magnet 5 and directly remove the mounting plate 41 from the sleeve 2, and then use the magnet 5 to adsorb the positioning tube mechanism 4 containing the part to be tested to the sleeve 2 for testing. The whole process is convenient and quick, which greatly improves the assembly efficiency of the positioning tube mechanism 4.
[0041] According to one embodiment of the present invention, the magnet 5 can also be arranged between the sleeve 2 and the mounting plate 41. The sleeve 2 and the mounting plate 41 are both ferromagnetic materials. One side of the magnet 5 is adsorbed on the sleeve 2, and the other side of the magnet 5 is adsorbed on the mounting plate 41; thereby facilitating the disassembly of the mounting plate 41 and the positioning tube assembly 42.
[0042] See also Figure 2In one embodiment, the mounting area 412 is an annular mounting area, the annular mounting area 412 is arranged around the placement area 411, and the magnet 5 is an annular magnet; if a single screw is used to fix the mounting plate 41, it may happen that part of the mounting plate 41 near the screw can fit with the sleeve 2, while other areas may be lifted up, and thus the mounting plate 41 cannot fit 100% with the sleeve 2. The reason is that the mounting plate 41 is unevenly stressed, resulting in the lifting phenomenon. The magnet 5 of this scheme adopts an annular magnet, which is arranged corresponding to the annular mounting area. The contact area between the magnet 5 and the mounting plate 41 is adapted to the mounting area 412, so that the stress on the mounting plate 41 is basically uniform, so that the mounting plate 41 can better fit with the sleeve 2, thereby providing a guarantee for the accuracy of the test. It should be noted that the outer diameter of the annular magnet can be consistent with the outer diameter of the mounting plate 41, or slightly larger than the outer diameter of the mounting plate 41, and the inner hole diameter of the annular magnet is greater than or equal to the diameter of the barrel body 421, so that the barrel body 421 can smoothly pass through the inner hole of the annular magnet. It should also be noted that the positioning tube mechanism 4 provides reliable support and positioning for the laser module 200 , and the magnet 5 is used to achieve quick and easy installation and removal. The entire optical component test fixture 100 has low cost and high stability.
[0043] According to an embodiment of the present invention, the material of the mounting plate 41 is a ferromagnetic material. The mounting plate 41 is made of a ferromagnetic material in order to enhance the magnetic force acting on the mounting plate 41, improve the stability of the connection between the mounting plate 41 and the sleeve 2, and reduce the probability of the mounting plate 41 moving relative to the sleeve 2 due to the external force acting on the mounting plate 41. It should be noted that ferromagnetic materials include metal materials such as iron, nickel, and cobalt.
[0044] In one embodiment, the positioning barrel assembly 42 includes a barrel body 421 and a positioning member 422. The barrel body 421 is disposed on the mounting plate 41 and forms a cavity 4212 with the mounting plate 41. An inlet and outlet 4215 is provided on the side of the barrel body 421 away from the mounting plate 41. A positioning hole 4211 is provided on the side wall 4214 of the barrel body 421 for the positioning member 422 to extend into. One end of the positioning member 422 facing the cavity 4212 can abut against the test piece to make the test piece stationary relative to the barrel body 421. The positioning member 422 is provided to position the module body 201 in the barrel body 421. If the positioning member 422 is missing, the module body 201 may move relative to the barrel body 421 along the axial direction of the barrel body 421. The positioning member 422 is used to position the module body 201 in the barrel body 421 to prevent it from moving relative to the barrel body 421 during the test process, thereby improving the test accuracy of the optical component test fixture 100. It should be noted that the positioning member 422 may be an elastic positioning column, and the elastic positioning column is interference-fitted with the positioning hole 4211. It should also be noted that the sleeve 2 and the cylinder body 421 are both cylindrical structural members.
[0045] In one embodiment, the positioning member 422 includes a threaded fastener 4221, the inner wall of the positioning hole 4211 is provided with an internal thread, the threaded fastener 4221 is screwed with the internal thread, and one end of the threaded fastener 4221 facing the cavity 4212 abuts against the test piece. Through the screwing of the threaded fastener 4221 and the positioning hole 4211, the length of the threaded fastener 4221 extending into the cavity 4212 can be adjusted to cope with module bodies 201 of different sizes, thereby achieving positioning of module bodies 201 of different sizes. It should be noted that the threaded fastener 4221 is a screw.
[0046] In one embodiment, the socket 3 is detachably connected to the sleeve 2. The purpose of the detachable connection between the socket 3 and the sleeve 2 is to facilitate the maintenance and replacement of the socket 3.
[0047] In one embodiment, the socket 3 is provided with a first mounting hole 32, the sleeve 2 is provided with a second mounting hole 23 connected to the first mounting hole 32, and the optical element test fixture 100 further includes a positioning screw 6, which can pass through the first mounting hole 32 and then be screwed with the second mounting hole 23. The positioning screw 6 passes through the first mounting hole 32 and is screwed with the second mounting hole 23, so that the socket 3 is smoothly installed in the sleeve 2, thereby improving the reliability of the connection between the socket 3 and the sleeve 2. It should be noted that the end surface of the sleeve 2 facing one end of the positioning tube mechanism 4 is provided with a second mounting hole 23. It should also be noted that the number of the second mounting holes 23 is multiple, and the multiple second mounting holes 23 are arranged at intervals along the circumference of the sleeve 2, the number of the first mounting holes 32 and the second mounting holes 23 are the same and are arranged one-to-one, and the number of the positioning screws 6 and the second mounting holes 23 are the same and are arranged one-to-one.
[0048] In one embodiment, the mounting frame 1 further includes a base 12, the frame body 11 is connected to the base 12, and the optical element test fixture 100 further includes a target paper mounting plate 7, the target paper mounting plate 7 is arranged on the base 12, the inlet and outlet 4215 faces the target paper mounting plate 7, and the target paper mounting plate 7 and the frame body 11 are arranged at intervals along the axial direction of the cavity 4212. The mounting frame 1 and the target paper mounting plate 7 are placed by setting the base 12, and the target paper mounting plate 7 is set to install the target paper, which facilitates the subsequent testing of the laser module 200. It should be noted that the frame body 11 is provided with a first positioning through hole, and the base 12 is provided with a second positioning through hole corresponding to the first positioning through hole. The frame body 11 passes through the second positioning through hole through a screw and then screws with the first positioning through hole, thereby realizing a reliable connection between the frame body 11 and the base 12, and ensuring that the frame body 11 can be arranged perpendicular to the base 12.
[0049] In one embodiment, the target paper mounting plate 7 is movably mounted on the base 12 so that the target paper mounting plate 7 can move relative to the base 12 along the axial direction of the cavity 4212. The target paper mounting plate 7 is movably mounted on the base 12 so as to adjust the distance between the target paper set on the target paper mounting plate 7 and the laser module 200 to adapt to different test requirements. It should be noted that the target paper mounting plate 7 can be movably mounted on the base 12 so that the target paper mounting plate 7 can achieve sliding cooperation with the base 12 through a slide rail and a slide groove, or the target paper mounting plate 7 can be provided with a slide hole, and the base 12 can be provided with a slide rod passing through the slide hole so that the target paper mounting plate 7 can slide relative to the base 12. It should also be noted that the target paper mounting plate 7 is provided with a first fixing hole, and the base 12 is provided with a second fixing hole. When the target paper mounting plate 7 moves to a specified position, the screw can be passed through the second fixing hole and then screwed with the first fixing hole to limit the movement of the target paper mounting plate 7 relative to the base 12, so as to prevent the target paper mounting plate 7 from moving relative to the base 12 during the test of the laser module 200.
[0050] According to an embodiment of the present invention, a waist-shaped hole 121 is provided on the base 12, and a screw hole is provided at the bottom of the target paper mounting plate 7. After the adjusting screw passes through the waist-shaped hole 121, it is screwed with the screw hole. The threaded column of the adjusting screw is located in the waist-shaped hole 121, and the head of the adjusting screw is located outside the waist-shaped hole 121. When the adjusting screw is loosened, the head of the adjusting screw is separated from the bottom surface of the base 12, so that the target paper mounting plate 7 can move relative to the base 12. When the target paper mounting plate 7 moves to a specified position, the adjusting screw is tightened so that the head of the adjusting screw is pressed against the bottom of the base 12, thereby limiting the movement of the target paper mounting plate 7 relative to the base 12.
[0051] See also Figures 1 to 3 In one embodiment, the sleeve 2 is detachably connected to the frame body 11. In one embodiment, the frame body 11 may be provided with a threaded hole at the top, the optical component test fixture 100 may further include a mounting screw 8, the mounting screw 8 is screwed with the threaded hole, the frame body 11 may further include an assembly hole for inserting the sleeve 2, the threaded hole is connected to the assembly hole, so that the mounting screw 8 can pass through the threaded hole and abut against the outer wall of the sleeve 2 to limit the movement of the sleeve 2 relative to the frame body 11; in another embodiment, the frame body 11 may be provided with a through hole at the top, the optical component test fixture 100 may further include a mounting screw 8, the frame body 11 may further include an assembly hole for inserting the sleeve 2, the through hole is connected to the assembly hole, the side wall 4214 of the sleeve 2 may be provided with a positioning threaded hole, the mounting screw 8 can pass through the through hole and screwed with the positioning threaded hole, thereby limiting the movement of the sleeve 2 relative to the frame body 11 and improving the assembly reliability of the sleeve 2 and the frame body 11. In one embodiment, the axial direction of the assembly hole is parallel to the horizontal direction.
[0052] In one embodiment, the axial direction of the cavity 4212 is parallel to the horizontal direction, the axial direction of the sleeve 2 is parallel to the horizontal direction, and the sleeve 2 is vertically arranged on the frame body 11. Among them, through this arrangement, the output light of the laser module 200 can be emitted horizontally, so as to facilitate testing. It should be noted that the end face of the sleeve 2 facing the positioning tube mechanism 4 is arranged parallel to the inner wall of the cavity 4212 that is in contact with the piece to be tested. If the inner wall of the cavity 4212 that is in contact with the piece to be tested is the bottom wall 4213 of the cavity 4212, then the end face of the sleeve 2 facing the positioning tube mechanism 4 is arranged parallel to the bottom wall 4213 of the cavity 4212.
[0053] According to an embodiment of the present invention, the axial direction of the cavity 4212 is tilted upward compared to the horizontal direction, which can also ensure that the inner wall of the cavity 4212 provides reliable support for the DUT and prevent the DUT from moving under the action of gravity.
[0054] Among them, the assembly sequence of the optical element test fixture 100 can be: the frame body 11 is screwed through the second positioning through hole of the base 12 and then screwed with the first positioning through hole of the frame body 11, so as to achieve a reliable connection between the frame body 11 and the base 12, and ensure that the frame body 11 can be assembled perpendicular to the base 12; the socket 3 is placed in the accommodating cavity 21 of the sleeve 2, and the positioning screw 6 is passed through the first mounting hole 32 of the socket 3 and then screwed with the second mounting hole 23 of the sleeve 2, so that the socket 3 is smoothly installed in the sleeve 2; the sleeve 2 is inserted into the assembly hole, and then the mounting screw 8 is passed through the through hole on the frame body 11 and then screwed with the positioning threaded hole on the sleeve 2, so that the sleeve 2 is installed on the frame body 11; the cylinder body 421 passes through the inner hole of the annular magnet so that the annular magnet can be set in the annular mounting area, and the module body 201 is placed in the cavity 4212 from the inlet and outlet 4215, and the pin 202 of the laser module 200 is inserted through the connecting hole 413 and the insertion hole 22 In the socket 3, the annular magnet will absorb and fit the mounting plate 41 onto the sleeve 2, and the left side of the module body 201 will fit with the bottom wall 4213 of the cavity 4212. Then, by tightening the threaded fastener 4221, the threaded fastener 4221 will be pressed against the module body 201, so that one side of the module body 201 is pressed against the threaded fastener 4221, and the other side is pressed against the side wall 4214 of the cavity 4212, so as to limit the movement of the module body 201 relative to the cavity 4212 and ensure that the module body 201 The left side is fitted with the bottom wall 4213 of the cavity 4212; then the distance from the target paper mounting plate 7 to the laser module 200 is adjusted according to the test requirements. After the adjustment is completed, the screw is passed through the second fixing hole of the base 12 and then screwed into the first fixing hole of the target paper mounting plate 7 to limit the movement of the target paper mounting plate 7 relative to the base 12; the inspection module is used to confirm the coaxiality of the light effect and the deflection angle 0° position, the target paper is adjusted and fixed on the target paper mounting plate 7, thereby completing the construction of the optical element test fixture 100.
[0055] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An optical component testing fixture, characterized in that: include: A mounting frame, the mounting frame comprising a frame body; A sleeve, wherein a receiving cavity is provided inside the sleeve, one end of the sleeve is provided on the frame body, and the other end of the sleeve is provided with an insertion hole communicating with the receiving cavity; A socket, the socket is arranged in the accommodating cavity, and the insertion port of the socket is arranged toward the insertion hole; A positioning cylinder mechanism, wherein a cavity for accommodating a piece to be tested is arranged inside the positioning cylinder mechanism, the positioning cylinder mechanism comprises a first end close to the sleeve and a second end away from the sleeve, the first end being arranged at an end of the sleeve away from the frame body; the second end is provided with an inlet and outlet connected to the accommodating cavity, the positioning cylinder mechanism can provide a vertical upward supporting force for the piece to be tested located in the cavity, so that the end of the piece to be tested facing the socket is in contact with the bottom wall of the cavity facing the socket; the first end is provided with a connecting hole, and the insertion hole and the cavity are connected through the connecting hole.
2. The optical component testing fixture according to claim 1, characterized in that: The positioning tube mechanism includes a mounting plate and a positioning tube assembly, one side of the mounting plate is arranged at an end of the sleeve away from the frame body, the other side of the mounting plate is provided with the positioning tube assembly, the positioning tube assembly and the mounting plate form the cavity, the mounting plate is provided with the connecting hole, and the side of the positioning tube assembly away from the mounting plate is provided with the inlet and outlet.
3. The optical component testing fixture as claimed in claim 2, characterized in that: A placement area and an installation area are provided on one side of the mounting plate away from the frame body, and the positioning tube assembly is located in the placement area; the optical element testing fixture also includes a magnet, and the magnet is provided in the installation area. The material of the sleeve is ferromagnetic material, so that the magnet can adsorb the mounting plate to the sleeve and make the mounting plate fit the sleeve.
4. The optical component testing fixture as claimed in claim 3, characterized in that: The installation area is an annular installation area, the annular installation area is arranged around the placement area, and the magnet is an annular magnet; And / or, the material of the mounting plate is ferromagnetic material.
5. The optical component testing fixture as claimed in claim 2, characterized in that: The positioning cylinder assembly includes a cylinder body and a positioning piece. The cylinder body is arranged on the mounting plate and forms the cavity with the mounting plate. The inlet and outlet are provided on the side of the cylinder body away from the mounting plate. The side wall of the cylinder body is provided with a positioning hole for the positioning piece to extend into. One end of the positioning piece facing the cavity can abut against the piece to be tested, and the side of the piece to be tested away from the positioning piece abuts against the side wall of the cavity, so that the piece to be tested is stationary relative to the cylinder body.
6. The optical component testing fixture as claimed in claim 5, characterized in that: The positioning member comprises a threaded fastener, the inner wall of the positioning hole is provided with an internal thread, the threaded fastener is spirally matched with the internal thread, and one end of the threaded fastener facing the cavity abuts against the test piece.
7. The optical component testing fixture according to any one of claims 1 to 6, characterized in that: The socket is detachably connected to the sleeve.
8. The optical component testing fixture as claimed in claim 7, characterized in that: The socket is provided with a first mounting hole, the sleeve is provided with a second mounting hole connected to the first mounting hole, and the optical element testing fixture further includes a positioning screw, which can pass through the first mounting hole and then be screw-fitted with the second mounting hole.
9. The optical component testing fixture according to any one of claims 1 to 6, characterized in that: The mounting frame also includes a base, the frame body is connected to the base, the optical element testing fixture also includes a target paper mounting plate, the target paper mounting plate is arranged on the base, the inlet and outlet face the target paper mounting plate, and the target paper mounting plate and the frame body are spaced apart along the axial direction of the cavity.
10. The optical component testing fixture according to claim 9, characterized in that: The target paper mounting plate is movably mounted on the base, so that the target paper mounting plate can move relative to the base along the axial direction of the cavity.
11. The optical component testing fixture according to any one of claims 1 to 6, characterized in that: The sleeve is detachably connected to the frame body.
12. The optical component testing fixture according to any one of claims 1 to 6, characterized in that: The axial direction of the cavity is parallel to the horizontal direction, the axial direction of the sleeve is parallel to the horizontal direction, the sleeve is vertically arranged on the frame body, and the end surface of one end of the sleeve facing the positioning tube mechanism is arranged parallel to the bottom wall.