A multi-channel optical transceiver test fixture
Patent Information
- Application Number
- CN202522008538.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-18
AI Technical Summary
本实用新型公开一种多通道光学收发测试夹具，包括上下支撑架和多个光路控制模组，被测试的光学设备放置在上支撑架和下支撑架之间，将被测设备的每个通道的光束收发窗口分别与对应的光路控制模组出光口和光路控制模组进光口对齐，利用紧固螺栓将上支撑架和下支撑架锁定在一起，不同的光路控制模组根据接收指令命令对应的快门模组控制对应遮光片动作以启闭对应的光路控制模组进光口，实现多个光路通道开启、关闭或组合状态，用户可以根据测试需求，自由选择开启单个通道、特定组合通道或全部通道，并在此条件下检测待测产品的抗振能力，能提供丰富的光学测试用例，极大扩展了测试用例的覆盖范围，尤其适合复杂光学测试用例的使用。
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Figure CN224780321U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of optical testing auxiliary equipment, and specifically discloses a multi-channel optical transceiver test fixture. Background Technology
[0002] In the field of optical testing, there is a type of product with multiple optical transceiver channels. Each channel has an optical transmitting window and an optical receiving window. During functional testing, this product requires specific sequences or combinations of optical receiving windows to receive the light beam emitted from the transmitting windows. This is used to verify whether the optical path and control system of the optical product under test meet the functional and performance requirements. The principle is illustrated in the attached figure. Figure 1 As shown, attached Figure 1 Only one optical path control module is shown for illustration; the control signals are provided by an external control system. In addition to the above tests, some product models require structural vibration resistance tests under specified vibration intensities. The usual practice is to place the product under test on a vibration table, and install vibration sensors on sensor mounting blocks in both the X and Y axes to test the actual vibration intensity. During each test, vibration is activated only in one direction, and the intensity is gradually increased. When the vibration intensity exceeds the product's vibration resistance, the beam transceiver window will experience a slight displacement, causing the incident angle or position of the beam entering the optical path control module to deviate from design requirements. This results in a reduction in the amount of light reflected into the beam receiving window. When the external control system detects an abnormal reduction in the amount of light entering a beam receiving window, it records the vibration intensity value in the current direction to determine whether the product's vibration resistance meets the standards. Based on the product characteristics and functional testing requirements, there is an urgent need to design a multi-channel optical transceiver test fixture to realize the on / off or combined states of multiple optical path channels. Users can freely choose to activate a single channel, a specific combination of channels, or all channels according to their testing needs, providing a rich set of optical test cases and expanding the coverage of test cases. Summary of the Invention
[0003] To address the problems in the background technology, this utility model discloses a multi-channel optical transceiver test fixture, including upper and lower support frames and multiple optical path control modules, which realize the open, closed, or combined states of multiple optical path channels. Users can freely choose to open a single channel, a specific combination of channels, or all channels according to their testing needs, providing a wealth of optical test cases and greatly expanding the coverage of test cases.
[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A multi-channel optical transceiver test fixture includes an upper support frame and a lower support frame, which together form a hollow cylinder open at both ends. The upper support frame is detachably connected to the lower support frame by fastening bolts. Both ends of the lower support frame are fixedly connected to an adapter plate via bracket connecting seats. A plurality of optical path control modules are evenly spaced along the circumference on the outer circular surfaces of the upper and lower support frames. Each optical path control module includes a shutter module, a light-shielding plate, an optical path control module inlet, and an optical path control module outlet. The shutter module can control the movement of the light-shielding plate to open and close the optical path. The control module has a light inlet. On the side walls of the upper and lower support frames, beam transceiver windows are respectively provided at positions corresponding to the optical path control module. Each beam transceiver window includes a beam inlet that matches the light inlet of the optical path control module and a beam outlet that corresponds to the light outlet of the optical path control module. The upper support frame is provided with a first sensor mounting block and a second sensor mounting block. Each sensor mounting block is provided with at least one vibration sensor. The vibration sensor is used to monitor the vibration intensity values in the X-axis and Y-axis directions during the test.
[0005] Furthermore, the multi-channel optical transceiver test fixture has identical bracket connecting seat mounting holes at the right angles of the outer periphery of the upper and lower support frames, allowing the hollow cylinder enclosed by the upper and lower support frames to be rotated 90° arbitrarily and fixed to the bracket connecting seat, so that the vibration test platform in one direction can realize vibration testing in three directions.
[0006] Furthermore, the multi-channel optical transceiver test fixture has control cable routing channels between adjacent optical path control modules, and control cable connectors are respectively provided on the rear end faces of the upper and lower support frames.
[0007] Furthermore, the multi-channel optical transceiver test fixture has black foam evenly distributed on the inner walls of the upper and lower support frames.
[0008] Furthermore, the multi-channel optical transceiver test fixture has arc-shaped end caps connected to the front end face of the upper support frame and the rear end face of the lower support frame, respectively. The center of the end cap is on the extension line of the central axis of the cylinder formed by the upper support frame and the lower support frame, and the radius of the end cap is smaller than the radius of the cylinder. The end caps together realize the axial positioning of the optical device under test.
[0009] Furthermore, the multi-channel optical transceiver test fixture, the optical path control module further includes a matching optical path control module rear cover and an optical path control module front housing, which together form a sealed space. The optical path control module light inlet and light outlet are located on the side of the optical path control module front housing adjacent to the beam transceiver window. A shutter module is provided on the inner wall of the optical path control module corresponding to the optical path control module light inlet. The shutter module is detachably connected to the optical path control module front housing by fixing bolts. A light shield is provided between the shutter module and the optical path control module light inlet. A recessed S-shaped shutter module control line groove is provided on the optical path control module front housing.
[0010] Furthermore, the multi-channel optical transceiver test fixture has black foam filling the gap between the shutter module and the front housing of the optical path control module.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a multi-channel optical transceiver test fixture, including upper and lower support frames and multiple optical path control modules. The optical device under test is placed between the upper and lower support frames. The beam transceiver window of each channel of the device under test is aligned with the light output port and light input port of the corresponding optical path control module, respectively. The upper and lower support frames are locked together using fastening bolts. Different optical path control modules control the corresponding shutter modules to open and close the corresponding light input ports of the optical path control modules according to the received command, realizing the open, closed, or combined states of multiple optical path channels. Users can freely choose to open a single channel, a specific combination of channels, or all channels according to the test requirements, and test the vibration resistance of the product under test under these conditions. It can provide a rich set of optical test cases, greatly expanding the coverage of test cases, and is especially suitable for the use of complex optical test cases. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the control principle of the optical transceiver test fixture of this utility model; Figure 2 This is a three-dimensional structural diagram of the multi-channel optical transceiver test fixture of this utility model. Figure 1 ; Figure 3 This is a three-dimensional structural diagram of the multi-channel optical transceiver test fixture of this utility model. Figure 2 ; Figure 4 This is a cross-sectional view of the optical path control module in this utility model; In the above diagram: 1-Optical path control module; 1.1-Rear cover of optical path control module; 1.2-Front shell of optical path control module; 1.3-Shutter module; 1.4-Light shield; 1.5-Light inlet of optical path control module; 1.6-Light outlet of optical path control module; 2-Control cable routing channel; 3-Upper support frame; 4-Lower support frame; 5-Bracket connector; 6-Adapter board; 7-First sensor mounting block; 8-Lower control cable connector; 9-Rear end cover; 10-Black foam; 11-Beam transceiver window; 11.1-Beam inlet; 11.2-Beam outlet; 12-Upper control cable connector; 13-Second sensor mounting block; 14-First front end cover; 15-Second front end cover. Detailed Implementation
[0013] To better understand this utility model, the following embodiments further illustrate its content. However, the content of this utility model is not limited to the following embodiments. It should be noted that when the multi-channel optical transceiver test fixture of this utility model is working, it needs to be controlled by an external control system through the shutter module 1.3 to control the action of the light shield 1.4 to open and close the light inlet 1.5 of the optical path control module. The innovation of this utility model is the mechanical structure of the multi-channel optical transceiver test fixture. The external control system is not the innovation of this solution, so the external control system will not be described in detail here.
[0014] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0015] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0016] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0017] Combined with appendix Figure 2-4 This invention details a multi-channel optical transceiver test fixture, comprising an upper support frame 3 and a lower support frame 4, which together form a hollow cylinder open at both ends. The upper support frame 3 is detachably connected to the lower support frame 4 by fastening bolts. The two ends of the lower support frame 4 are fixedly connected to an adapter plate 6 via bracket connecting seats 5. A plurality of optical path control modules 1 are evenly spaced along the circumference on the outer surfaces of the upper and lower support frames 3 and 4. Each optical path control module 1 contains a shutter module 1.3, a light shield 1.4, an optical path control module inlet 1.5, and an optical path control module outlet 1.6. The shutter module 1.3 controls the action of the light shield 1.4 to open and close the optical path control module inlet 1.5. It should be noted that the optical path control module 1 is prior art; therefore, the specific method by which the shutter module 1.3 controls the action of the light shield 1.4 to open and close the optical path control module inlet 1.5 is not described here. In detail, beam transceiver windows 11 are respectively provided on the side walls of the upper support frame 3 and the lower support frame 4 at positions corresponding to the optical path control module 1, penetrating the side walls of the upper support frame 3 or the lower support frame 4. Each beam transceiver window 11 includes a beam inlet 11.1 matched with the light inlet 1.5 of the optical path control module and a beam outlet 11.2 corresponding to the light outlet 1.6 of the optical path control module. A first sensor mounting block 7 and a second sensor mounting block 13 are respectively provided on the upper support frame 3. Each sensor mounting block is provided with at least one vibration sensor. The vibration sensor is used to monitor the vibration intensity values in the X-axis direction and the Y-axis direction during the test. When the external control system detects that the light intake of a certain beam receiving window is abnormally reduced, it determines that the current vibration intensity exceeds the vibration resistance of the tested product. The external system will record the vibration intensity value measured by the vibration sensor in the current direction and use it to determine whether the vibration resistance performance of the product meets the standard.
[0018] As an optional design, the multi-channel optical transceiver test fixture is preferred. This fixture has identical bracket connection seat mounting holes at the right angles of the upper and lower support frames, allowing the hollow cylinder enclosed by the upper and lower support frames to rotate 90° arbitrarily for installation and fixation with the bracket connection seats. This enables the vibration test platform in one direction to perform vibration testing in the X, Y, and Z directions. Figure 3 As shown.
[0019] As an optional design, the multi-channel optical transceiver test fixture is preferably provided with a control cable routing groove 2 between adjacent optical path control modules 1, an upper control cable connector 12 on the rear end face of the upper support frame 3, and a lower control cable connector 8 on the rear end face of the lower support frame 4. The lower control cable connector 8 and the upper control cable connector 12 are used to quickly connect to external devices, thereby realizing the power and signal connection between the optical path control module 1 and the external devices.
[0020] As an optional design, the multi-channel optical transceiver test fixture preferably has black foam 10 evenly distributed on the inner sidewalls of the upper support frame 3 and the lower support frame 4. When the fastening bolts are tightened, the compressed black foam provides a large radial friction force, preventing the optical equipment under test from becoming misaligned during the test, which would lead to the failure of the optical path control module. At the same time, the compressed black foam fills the gap between the optical equipment under test and the test fixture, preventing light leakage between the beam transceiver windows of each quadrant, and protecting the optical transceiver windows of the optical equipment from being scratched.
[0021] As an optional design, the preferred multi-channel optical transceiver test fixture has an arc-shaped second front cover 15 connected to the front end face of the upper support frame 3, an arc-shaped first front cover 14 connected to the front end face of the lower support frame 4, and an arc-shaped rear cover 9 connected to the rear end face of the lower support frame 4. The centers of the first front cover 14, the second front cover 15, and the rear cover 9 are on the extension line of the central axis of the cylinder formed by the upper support frame 3 and the lower support frame 4. The radius of the end cover is smaller than the radius of the cylinder. The first front cover 14, the second front cover 15, and the rear cover 9 together realize the axial positioning of the optical device under test, which facilitates the rapid alignment of the beam transceiver window and can prevent direct or indirect safety accidents and economic losses caused by the optical device under test falling off in the axial direction during the foreseeable high-intensity test.
[0022] As an optional design, the multi-channel optical transceiver test fixture is preferred. The optical path control module 1 further includes a matching optical path control module rear cover 1.1 and an optical path control module front housing 1.2. The optical path control module rear cover 1.1 and the optical path control module front housing 1.2 together form a sealed space. The optical path control module light inlet 1.5 and the optical path control module light outlet 1.6 are located on the side of the optical path control module front housing 1.2 adjacent to the beam transceiver window 11. A shutter module 1.3 is provided on the inner wall of the optical path control module front housing 1.2 at a position corresponding to the optical path control module light inlet 1.5. The shutter module 1.3 is detachably connected to the optical path control module front housing 1.2 by fixing bolts. A light shield 1.4 is located between the shutter module 1.3 and the optical path control module light inlet 1.5. The shutter module 1.3 can control the light shield. 1.4 It has a switching speed of milliseconds or even faster, which can precisely control the timing of the appearance and disappearance of the light beam. It can realize the opening, closing or combination of multiple optical path channels. The inner wall of the optical path control module 1 is treated with a special process, resulting in low beam loss during the diffuse reflection process of the beam in the internal space. The quality of the reflected light (brightness, loss, etc.) meets the requirements. Moreover, the optical path control module has a high degree of isolation. It can not only completely isolate external light and ensure that no external stray light affects the experimental results, but also effectively isolate the optical path when the shutter module is closed, avoiding the weak leakage of light emitted from the optical emission window and thus interfering with the test results. The front housing 1.2 of the optical path control module has a recessed S-shaped shutter module control line groove, which is filled with black foam to prevent the light beam entering the module from leaking to the outside of the module.
[0023] As an optional design, the multi-channel optical transceiver test fixture preferably has black foam filling the gap between the shutter module 1.3 and the front housing 1.2 of the optical path control module to prevent light beams from entering the module and reflecting to the optical receiving window when the shutter module 1.3 is closed.
[0024] The working process of this utility model is as follows: During operation, the optical device under test is placed between the upper and lower support frames. The beam transceiver windows of each channel of the device under test are aligned with the corresponding light output port and light input port of the optical path control module. The upper and lower support frames are locked together using fastening bolts. When the fastening bolts are tightened, the black foam evenly distributed on the inner wall of the fixture is compressed. The compressed black foam provides a large radial friction force to prevent the optical device under test from being misaligned during the test, which would cause the optical path control module to fail. At the same time, the compressed black foam fills the gap between the optical device under test and the test fixture to prevent light leakage between the beam transceiver windows of each quadrant. Once ready, activate the multi-channel optical transceiver test fixture of this invention. According to the test requirements, the external control system sends control signal commands to one or more shutter modules 1.3. Upon receiving the commands, different shutter modules 1.3 control the corresponding light-blocking plates 1.4 to open or close the corresponding optical path control module light inlet 1.5. If the optical path control module light inlet 1.5 is closed, the corresponding optical path channel is closed. If the optical path control module light inlet 1.5 is open, the beam emitted from the emission window of the optical device under test passes sequentially through the corresponding beam inlet 11.1 and the optical path control module light inlet. 1.5 The light enters the corresponding optical path control module 1. The light reflected from the optical path control module 1 passes through the corresponding optical path control module output port 1.6 and beam exit 11.2 in sequence and is then received by the receiving window of the optical device under test. This enables multiple optical path channels to be open, closed, or combined. Users can freely choose to open a single channel, a specific combination of channels, or all channels according to their testing needs, and perform vibration resistance level testing on the product under these conditions. It can provide a wealth of optical test cases, greatly expanding the coverage of test cases, and is especially suitable for the use of complex optical test cases.
[0025] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.
Claims
1. A multi-channel optical transceiver test fixture, characterized by: The application relates to a vibration test platform for optical equipment, which comprises an upper support frame and a lower support frame, the upper support frame and the lower support frame jointly form a hollow cylinder with two open ends, the upper support frame is detachably connected with the lower support frame through fastening bolts, the lower support frame is fixedly connected with an adapter plate through support connecting seats at two ends, a plurality of light path control modules are uniformly and intervally arranged on the outer circumferential surface of the upper support frame and the lower support frame in the circumferential direction, a shutter module, a light shield, a light path control module light inlet and a light path control module light outlet are respectively arranged in each light path control module, the shutter module can control the action of the light shield to open and close the light path control module light inlet, light beam receiving and transmitting windows penetrating through the side wall of the upper support frame or the lower support frame are arranged on the side wall of the upper support frame and the lower support frame at positions corresponding to the light path control modules, the light beam receiving and transmitting windows respectively comprise a light beam inlet matched with the light path control module light inlet and a light beam outlet corresponding to the light path control module light outlet, a first sensor mounting block and a second sensor mounting block are respectively arranged on the upper support frame, at least one vibration sensor is arranged on each sensor mounting block, and the vibration sensors are used for monitoring the vibration intensity values in the X-axis direction and the Y-axis direction in a test process.
2. The multi-channel optical transceiver test fixture of claim 1, wherein the plurality of optical channels are arranged in a two-dimensional array. Same support connecting seat mounting holes are arranged at the outer peripheral right angles of the upper support frame and the lower support frame, so that the hollow cylinder jointly formed by the upper support frame and the lower support frame can be arbitrarily turned by 90 degrees to be installed and fixed with the support connecting seat, and vibration test in three directions can be realized by the vibration test platform in one direction.
3. The multi-channel optical transceiver test fixture of claim 1, wherein: Control cable routing grooves are arranged between adjacent light path control modules, and control cable plug-in interfaces are respectively arranged on the rear end surfaces of the upper support frame and the lower support frame.
4. The multi-channel optical transceiver test fixture of claim 2, wherein: Black foam is uniformly distributed on the inner side walls of the upper support frame and the lower support frame.
5. The multi-channel optical transceiver test fixture of claim 3, wherein the plurality of optical transceiver test channels are configured to test a plurality of optical transceivers simultaneously. Arc-shaped end covers are respectively connected to the front end surfaces of the upper support frame and the lower support frame and the rear end surface of the lower support frame, the centers of the end covers are located on the extension line of the central axis of the cylinder jointly formed by the upper support frame and the lower support frame, the radius of the end cover is smaller than the radius of the cylinder, and the end covers jointly realize the axial positioning of the tested optical equipment.
6. The multi-channel optical transceiver test fixture of claim 3, wherein: The light path control module further comprises a light path control module rear cover and a light path control module front shell which are matched and arranged, the light path control module rear cover and the light path control module front shell jointly form a closed space, the light path control module light inlet and the light path control module light outlet are arranged on one side of the light path control module front shell adjacent to the light beam receiving and transmitting window, a shutter module is arranged on the inner wall of the light path control module front shell at a position corresponding to the light path control module light inlet, the shutter module is detachably connected with the light path control module front shell through fixing bolts, the light shield is arranged between the shutter module and the light path control module light inlet, and an S-shaped shutter module control cable routing groove is recessively arranged on the light path control module front shell.
7. The multi-channel optical transceiver test fixture of claim 5, wherein: Black foam is filled in the gap between the shutter module and the light path control module front shell.