A multi-type optical module test tooling
By designing test fixtures for various types of optical modules and utilizing a combination of detachable inserts and fixing blocks, the high cost problem caused by the variety of optical module types and sizes was solved, achieving cost reduction and the sharing of heat dissipation and heating functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 武汉钧恒科技有限公司
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
Smart Images
Figure CN224286338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical module technology, specifically to a multi-type optical module testing fixture. Background Technology
[0002] To determine whether the performance of the manufactured optical modules meets the requirements, testing is often required during the production process. Due to the large number of optical module types, a separate test fixture is often needed for each type, resulting in a large number of test fixtures. Furthermore, some optical modules may share similar dimensions. Figure 1 Taking the three types of optical modules shown as an example, they are named Class A, Class B, and Class C respectively. Class A, Class B, and Class C optical modules have the same width. The front and middle sections of Class A are the same height as Class B, but the optical port heights differ. The optical port height of Class A is greater than that of Class B. The optical port heights of Class B and Class C are the same. However, the front and middle sections of Class B and Class C have different heights, while the optical port heights of Class C are the same. For these three types of optical modules, conventional methods would require three types of testing fixtures, leading to increased costs. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a multi-type optical module testing fixture to overcome the shortcomings of the prior art.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0005] A multi-type optical module test fixture, comprising:
[0006] The test board and a connector fixed to and electrically connected to it are included. A base is fixed to the test board, and the base is fixedly connected to a first fixing block that is suspended in the air. The first fixing block has a first fixing cavity through which a first fixing cavity is opened on two opposite sides, facing the connector and with a width matching the width of the optical module. The height of the first fixing cavity is greater than the height of the optical module. A plug is detachably provided in the first fixing cavity. The height of the bottom of the first fixing cavity from the lower surface of the plug matches the height of the front and middle sections of the optical module in the first fixing cavity. A second fixing block is detachably fixed on the side of the first fixing block away from the connector. The second fixing block has a second fixing cavity through which a second fixing cavity is opened on two opposite sides, facing the first fixing cavity. The width of the second fixing cavity matches the width of the optical module, and the height of the second fixing cavity matches the height of the optical port section of the optical module.
[0007] The beneficial effects of this utility model are: when testing various types of optical modules with different heights and dimensions, the fixture only needs to replace one or two of the corresponding insert block and the second fixing block, while other components can be shared, thereby effectively reducing costs and increasing efficiency. The cooperation of the first fixing block, the insert block and the second fixing block can surround and fit the optical module as much as possible, which is conducive to heat dissipation or heating of the optical module.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the first fixing block, the insert block, and the second fixing block are made of metal, and the TEC block is fixed to the upper and / or lower surface of the first fixing block.
[0010] The further beneficial effects of adopting the above are as follows: During the testing of optical modules, the optical modules themselves generate a lot of heat, so the first fixing block, the insertion block, and the second fixing block are made of metal, which is conducive to heat conduction, thereby facilitating heat dissipation or heating. When testing the low-temperature and high-temperature performance of optical modules, it is required to cool down and heat up the optical modules. Therefore, a TEC block is introduced to cool down and heat up the optical modules, so that the optical modules can be stabilized at the required low-temperature and high-temperature test values. The room-temperature performance of optical modules can also be tested.
[0011] Furthermore, the first fixing block, the insert block, and the second fixing block are made of copper.
[0012] The further beneficial effects of adopting the above are: the first fixing block, the insertion block and the second fixing block made of copper have good thermal conductivity, which is conducive to heat dissipation of the optical module during room temperature testing.
[0013] Furthermore, the upper surface of the insert block slopes downward from back to front, and the top of the first fixing cavity slopes downward from back to front. The slope angle of the upper surface of the insert block is the same as the slope angle of the top of the first fixing cavity.
[0014] The further beneficial effect of adopting the above is that the upper surface of the insert can fit better with the top of the first fixed cavity by means of the inclined surface.
[0015] Furthermore, the upper surface of the insert block is tilted at an angle of 0.5°, and the top of the first fixed cavity is tilted at an angle of 0.5°.
[0016] Furthermore, the rear end of the insert block is detachably connected to the first fixing block using screws distributed horizontally.
[0017] The further beneficial effects of using the above-mentioned method are: connecting with screws not only provides good stability but also makes disassembly and assembly easy.
[0018] Furthermore, the insert is a T-shaped structure distributed horizontally, with the rear end of the insert being a T-shaped end. The first fixing block has an assembly groove on its side away from the base that communicates with the first fixing cavity and is distributed horizontally. The T-shaped end of the insert is located in the assembly groove and is detachably connected to the first fixing block by screws distributed horizontally.
[0019] The further beneficial effects of the above are as follows: the T-shaped end of the insert is located in the assembly groove and is detachably connected to the first fixing block by screws distributed horizontally, which makes it easy to assemble the insert and the connection by screws not only has good stability, but also makes it easy to disassemble and assemble.
[0020] Furthermore, a horizontally distributed groove is formed on the lower surface of the insert along the first fixing cavity. The width of the groove matches the width of the optical module, and the height of the bottom of the first fixing cavity from the top of the groove matches the height of the optical module in the front and middle sections of the first fixing cavity.
[0021] The further beneficial effect of adopting the above is that, for optical modules with large front and middle sections, a plug with a groove on its lower surface can be used to accommodate a certain height of the front and middle sections of the optical module, so that the height of the plug remains unchanged.
[0022] Furthermore, the base and the first fixing block are detachably connected by screws distributed horizontally, and the second fixing block and the first fixing block are detachably connected by screws distributed horizontally.
[0023] The further beneficial effects of using the above-mentioned method are: connecting with screws not only provides good stability but also makes disassembly and assembly easy.
[0024] Furthermore, the multi-type optical module test fixture also includes a housing. An insertion port is opened on one side plate of the housing. The test board, connector, first fixing block, base, plug block and second fixing block are located inside the housing. The test board is fixed to the bottom plate of the housing in a suspended manner by multiple columns. The rear end of the second fixing block is located inside the insertion port. The cross-sectional dimension of the insertion port is larger than the cross-sectional dimension of the second fixing block. The cross-sectional dimension of the insertion port is larger than the cross-sectional dimension of the plug block.
[0025] The further beneficial effects of adopting the above are: testing can be carried out without opening the enclosure, and the second fixing block and plug can be disassembled and replaced through the insertion port when testing different optical modules. Attached Figure Description
[0026] Figure 1 Structural diagrams of various types of optical modules;
[0027] Figure 2 The first structural diagram of a multi-type optical module test fixture;
[0028] Figure 3 for Figure 2 The first exploded view;
[0029] Figure 4 for Figure 2 The second exploded diagram;
[0030] Figure 5 for Figure 2 Cross-sectional view;
[0031] Figure 6 for Figure 2 A structural diagram of the multi-type optical module test fixture inside the enclosure;
[0032] Figure 7 A structural diagram of inserting a type A optical module into a multi-type optical module test fixture;
[0033] Figure 8 This is a second structural diagram of a multi-type optical module testing fixture;
[0034] Figure 9 for Figure 8 The first exploded view;
[0035] Figure 10 for Figure 8 The second exploded diagram;
[0036] Figure 11 for Figure 8 Cross-sectional view;
[0037] Figure 12 for Figure 8 A structural diagram of the multi-type optical module test fixture inside the enclosure;
[0038] Figure 13 A structural diagram of inserting a type B optical module into a multi-type optical module test fixture;
[0039] Figure 14 This is a third structural diagram of a multi-type optical module test fixture;
[0040] Figure 15 for Figure 14 The first exploded view;
[0041] Figure 16 for Figure 14 The second exploded diagram;
[0042] Figure 17 for Figure 14 Cross-sectional view;
[0043] Figure 18 for Figure 14 A structural diagram of the multi-type optical module test fixture inside the enclosure;
[0044] Figure 19This is a structural diagram of inserting a Class C optical module into a multi-type optical module test fixture.
[0045] The attached diagram lists the components represented by each number as follows:
[0046] 1. Test board, 2. Connector, 3. Base, 4. First fixing block, 410. First fixing cavity, 420. Assembly slot, 5. Insertion block, 510. Groove, 6. Second fixing block, 610. Second fixing cavity, 7. TEC block, 8. Housing, 810. Insertion port. Detailed Implementation
[0047] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0048] Example 1
[0049] like Figures 2 to 19 As shown, a multi-type optical module test fixture includes:
[0050] Test board 1, with a connector 2 fixed on it for electrical connection. Connector 2 is preferably located at the edge of test board 1. Connector 2 is used to engage with the gold fingers of the optical module, so that test board 1 can be electrically connected to the optical module through connector 2. Base 3 is fixed on test board 1, also preferably located at the edge of test board 1. Base 3 is fixedly connected to a suspended first fixing block 4. The first fixing block 4 is positioned opposite connector 2. A first fixing cavity 410 is opened through two opposite sides of the first fixing block 4, facing the connector 2. Since the first fixing cavity 410 faces the connector 2, the two opposite sides of the first fixing block 4 are the front side adjacent to the connector 2 and the rear side away from the connector 2. The width of the first fixing cavity 410 matches the width of the optical module, while the height of the first fixing cavity 410 is greater than the height of the optical module.
[0051] A detachable insert 5 is provided inside the first fixing cavity 410. "Detachable" means that the insert 5 can be removed from the first fixing cavity 410, facilitating the replacement of the corresponding insert 5 according to different height types of optical modules. The height of the bottom of the first fixing cavity 410 from the lower surface of the insert 5 matches the height of the optical module in the front and middle sections within the first fixing cavity 410. A second fixing block 6 is detachably fixed to the side of the first fixing block 4 opposite to the connector 2. "Detachable" means that the second fixing block 6 can be removed from the first fixing block 4. The second fixing block 6 is located on two opposite sides. A second fixing cavity 610 is formed through the side, directly opposite the first fixing cavity 410. Since the second fixing cavity 610 is directly opposite the first fixing cavity 410, and the first fixing cavity 410 is directly opposite the connector 2, the two opposite sides of the second fixing block 6 are the front side adjacent to the first fixing block 4 and the rear side away from the first fixing block 4. The width of the second fixing cavity 610 matches the width of the optical module, and the height of the second fixing cavity 610 matches the height of the optical port section of the optical module. Specifically, it can be understood that the cross-sectional dimensions of the second fixing cavity 610 match the cross-sectional dimensions of the optical port section of the optical module.
[0052] This type of test fixture is suitable for testing multiple types of optical modules with the same width but different heights. If the optical port section heights of the optical modules are the same, the same second fixing block 6 can be used. If the optical port section heights of the optical modules are different, a second fixing block 6 with the same height as the second fixing cavity 610 should be used. For example, using... Figure 1 Taking the Class A, Class B, and Class C optical modules as examples, for Class B and Class C optical modules, since the height of the optical port segment is the same, the same second fixing block 6 can be used. However, for Class A optical modules, the same second fixing block 6 cannot be used with Class B and Class C optical modules. Therefore, when testing Class A optical modules, a different second fixing block 6 can be used. If the height of the front and middle sections of the optical module is the same, the same insertion block 5 can be used. If the height of the front and middle sections of the optical module is different, a different insertion block 5 can be used. Again, taking Class A, Class B, and Class C optical modules as examples, for Class A and Class B optical modules, since the height of the front and middle sections is the same, the same insertion block 5 can be used. However, for Class C optical modules, the same insertion block 5 cannot be used with Class A and Class B optical modules. Therefore, when testing Class C optical modules, a different insertion block 5 can be used. Figures 2-7 Testing of Class A optical modules, Figures 8-13 Testing of Class B optical modules, Figures 14-19For testing Class C optical modules, when testing multiple types of optical modules with different heights and dimensions, this fixture only requires replacing one or two of the corresponding insert block 5 and second fixing block 6. Other components can be shared, which can effectively reduce costs and increase efficiency. The cooperation of the first fixing block 4, insert block 5 and second fixing block 6 can surround and fit the optical module as much as possible, which is conducive to heat dissipation or heating of the optical module.
[0053] Example 2
[0054] like Figures 2 to 19 As shown, this embodiment is a further improvement on embodiment 1, as detailed below:
[0055] The first fixing block 4 is made of metal, the insertion block 5 is made of metal, and the second fixing block 6 is made of metal. A TEC block 7 is fixed to the upper and / or lower surface of the first fixing block 4. There are three possibilities: the TEC block 7 is fixed to the upper surface of the first fixing block 4, the TEC block 7 is fixed to the lower surface of the first fixing block 4, and the TEC block 7 is fixed to both the upper and lower surfaces of the first fixing block 4. In the attached diagram of this embodiment, the third possibility is shown, where the TEC block 7 is fixed to both the upper and lower surfaces of the first fixing block 4. During optical module testing, the optical module itself generates a large amount of heat. Therefore, the first fixing block 4, insertion block 5, and second fixing block 6 are made of metal to facilitate heat conduction and thus heat dissipation. When testing the low-temperature and high-temperature performance of the optical module, it is required to cool and heat the optical module. Therefore, the TEC block 7 is introduced to cool and heat the optical module, stabilizing it at the required low-temperature and high-temperature test values, such as 0°C and 65°C. The room-temperature performance of the optical module, such as 25°C, can also be tested.
[0056] Furthermore, the first fixing block 4 is preferably made of copper, the insert block 5 is preferably made of copper, and the second fixing block 6 is preferably made of copper. Of course, this is just an example, and other materials may be used in actual applications. The first fixing block 4, the insert block 5, and the second fixing block 6 made of copper have good thermal conductivity, which is beneficial for heat dissipation of the optical module during room temperature testing. The cooperation of the first fixing block 4, the insert block 5, and the second fixing block 6 can surround and fit the optical module as much as possible to facilitate heat dissipation of the optical module.
[0057] Example 3
[0058] like Figure 5 , Figure 11 , Figure 17 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below:
[0059] The upper surface of the insert 5 is inclined downward from back to front, and the top of the first fixing cavity 410 is also inclined downward from back to front. The inclination angle of the upper surface of the insert 5 is the same as the inclination angle of the top of the first fixing cavity 410, which allows the upper surface of the insert 5 to fit better with the top of the first fixing cavity 410.
[0060] Furthermore, the tilt angle of the upper surface of the insert 5 can be 0.5°, and the tilt angle of the top of the first fixing cavity 410 can be 0.5°. This is just an exemplary description, and in actual application, it can fluctuate slightly within the range of 0.5°.
[0061] Example 4
[0062] like Figures 2-5 , Figures 7-11 , Figures 13-17 , Figure 19 As shown, this embodiment is a further improvement on embodiment 1, 2, or 3, as detailed below:
[0063] The rear end of the insert 5 is detachably connected to the first fixing block 4 by screws distributed horizontally. The screw connection not only provides good stability but also makes it easy to assemble and disassemble.
[0064] Example 5
[0065] like Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 15 , Figure 16 As shown, this embodiment is a further improvement on embodiment 4, as detailed below:
[0066] The insert 5 is a T-shaped structure distributed horizontally, with the rear end of the insert 5 being a T-shaped end. The first fixing block 4 has an assembly groove 420 on its side away from the base 3, which communicates with the first fixing cavity 410 and is distributed horizontally. The T-shaped end of the insert 5 has a threaded hole, and the assembly groove 420 also has a threaded hole. The T-shaped end of the insert 5 is located in the assembly groove 420 and is detachably connected to the first fixing block 4 using screws distributed horizontally. This makes it easy to assemble the insert 5, and the screw connection provides good stability and ease of disassembly and assembly. Of course, in this embodiment, the T-shaped structure is just an exemplary description, and other structures, such as the L-shaped structure, are not excluded in actual applications. The insert 5 described in this embodiment is applicable to Class B optical modules and Class C optical modules, that is, the front and middle sections of the optical module have the same height.
[0067] Example 6
[0068] like Figure 15 , Figure 16As shown, this embodiment is a further improvement on embodiment 4 or 5, as detailed below:
[0069] A horizontally distributed groove 510 is formed along the first fixing cavity 410 on the lower surface of the insert 5. The width of the groove 510 on the lower surface of the insert 5 matches the width of the optical module. The height from the bottom of the first fixing cavity 410 to the top of the groove 510 matches the height of the optical module in the front and middle sections within the first fixing cavity 410. Because the lower surface of the insert 5 has the groove 510, compared to the insert 5 without the groove, the height from the bottom of the first fixing cavity 410 to the top of the groove 510 on the lower surface of the insert 5 is greater than the height from the bottom of the first fixing cavity 410 to the lower surface of the insert 5. This is beneficial for optical modules with larger front and middle sections. Alternatively, a new insertion block 5 with a groove 510 on its lower surface can be used to accommodate the front and middle sections of the optical module at a certain height. That is, the height of the insertion block 5 remains unchanged, but the groove 510 on its lower surface accommodates the extra height of the front and middle sections of the optical module. This is suitable for Class C optical modules. Of course, the insertion block 5 can also be designed without the groove 510, with different heights, partial grooves 510 (as described in this embodiment), or all grooves 510. By designing grooves 510 of different depths, it can be suitable for different types of optical modules.
[0070] Example 7
[0071] like Figure 2 As shown, this embodiment is a further improvement on any one of embodiments 1 to 6, as detailed below:
[0072] The base 3 and the first fixing block 4 are detachably connected by screws distributed horizontally, and the second fixing block 6 and the first fixing block 4 are detachably connected by screws distributed horizontally. The screw connection not only provides good stability but also makes it easy to assemble and disassemble.
[0073] Example 8
[0074] like Figure 2 As shown, this embodiment is a further improvement on any one of embodiments 1 to 7, as detailed below:
[0075] The multi-type optical module testing fixture also includes a housing 8. An insertion port 810 is opened on one side plate of the housing 8. The test board 1, connector 2, first fixing block 4, base 3, plug 5, and second fixing block 6 are located inside the housing 8. The test board 1 is fixed to the bottom plate of the housing 8 in a suspended manner by multiple columns. The rear end of the second fixing block 6 is located inside the insertion port 810. The cross-sectional dimensions of the insertion port 810 are larger than those of the second fixing block 6 and the plug 5. Specifically, the width and height of the insertion port 810 are larger than those of the second fixing block 6 and the plug 5. When testing different optical modules, the second fixing block 6 and the plug 5 can be disassembled and replaced through the insertion port 810.
[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A multi-type optical module testing fixture, characterized in that, include: The test board (1) and the connector (2) fixed on and electrically connected to the test board (1) are provided. A base (3) is fixed on the test board (1). The base (3) is fixedly connected to a first fixing block (4) arranged in a suspended manner. The first fixing block (4) has a first fixing cavity (410) through two opposite sides, facing the connector (2) and whose width matches the width of the optical module. The height of the first fixing cavity (410) is greater than the height of the optical module. A plug (5) is provided in the first fixing cavity (410) in a detachable manner. The height of the bottom of the fixed cavity (410) from the lower surface of the insert block (5) matches the height of the optical module in the front and middle sections of the first fixed cavity (410); the first fixed block (4) is detachably fixed to a second fixed block (6) on the side away from the connector (2), and the second fixed block (6) has a second fixed cavity (610) that is directly opposite to the first fixed cavity (410) through two opposite sides, the width of the second fixed cavity (610) matches the width of the optical module, and the height of the second fixed cavity (610) matches the height of the optical port section of the optical module.
2. The multi-type optical module testing fixture according to claim 1, characterized in that, The first fixing block (4), the insert block (5) and the second fixing block (6) are made of metal, and the TEC block (7) is fixed on the upper and / or lower surface of the first fixing block (4).
3. A multi-type optical module testing fixture according to claim 1 or 2, characterized in that, The first fixing block (4), the insert block (5) and the second fixing block (6) are made of copper.
4. The multi-type optical module testing fixture according to claim 1, characterized in that, The upper surface of the insert (5) is inclined downward from back to front, and the top of the first fixing cavity (410) is inclined downward from back to front. The inclination angle of the upper surface of the insert (5) is the same as the inclination angle of the top of the first fixing cavity (410).
5. The multi-type optical module testing fixture according to claim 4, characterized in that, The upper surface of the insert (5) is tilted at an angle of 0.5°, and the top of the first fixed cavity (410) is tilted at an angle of 0.5°.
6. The multi-type optical module testing fixture according to claim 1, characterized in that, The rear end of the insert (5) is detachably connected to the first fixing block (4) by screws distributed horizontally.
7. The multi-type optical module testing fixture according to claim 6, characterized in that, The insert (5) is a T-shaped structure distributed horizontally. The rear end of the insert (5) is a T-shaped end. The first fixing block (4) has an assembly groove (420) on the side away from the base (3) that communicates with the first fixing cavity (410) and is distributed horizontally. The T-shaped end of the insert (5) is located in the assembly groove (420) and is detachably connected to the first fixing block (4) by screws distributed horizontally.
8. A multi-type optical module testing fixture according to claim 6 or 7, characterized in that, A horizontally distributed groove (510) is formed on the lower surface of the insert (5) along the first fixing cavity (410). The width of the groove (510) matches the width of the optical module. The height of the bottom of the first fixing cavity (410) from the top of the groove (510) matches the height of the optical module in the front and middle sections of the first fixing cavity (410).
9. A multi-type optical module testing fixture according to claim 1, characterized in that, The base (3) and the first fixing block (4) are detachably connected by screws distributed horizontally, and the second fixing block (6) and the first fixing block (4) are detachably connected by screws distributed horizontally.
10. A multi-type optical module testing fixture according to claim 1, characterized in that, It also includes a housing (8), on one side plate of the housing (8) having an insertion port (810). The test plate (1), connector (2), first fixing block (4), base (3), plug (5) and second fixing block (6) are located inside the housing (8). The test plate (1) is fixed to the bottom plate of the housing (8) in a suspended manner by multiple columns. The rear end of the second fixing block (6) is located inside the insertion port (810). The cross-sectional dimension of the insertion port (810) is larger than that of the second fixing block (6), and the cross-sectional dimension of the insertion port (810) is larger than that of the plug (5).