Optical module point temperature testing tool

Abstract

The utility model relates to an optical module point temperature test tool comprising a test board, a test cover used for insertion of an optical module is fixed on the test board, a heating module is fixed on the test cover, and heat generated by the heating module is transmitted to the optical module through the test cover; a temperature measuring hole is formed in the testing cover, a temperature sensing head which is in contact with the optical module inserted into the testing cover is arranged in the temperature measuring hole, a pressing structure which is used for pressing down the temperature sensing head to enable the temperature sensing head to be always attached to the optical module is fixed on the testing cover, and the temperature sensing head transmits the sensed temperature to the point thermometer through a temperature sensing line. The testing tool has the beneficial effects that the testing tool is provided with the heating module, so that a high-temperature box does not need to be used during high-temperature testing, and compared with the prior art, the cost can be reduced; and the temperature sensing head is always attached to the optical module through the pressing structure, so that the accuracy of a test result can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of optical module point temperature testing, in particular to an optical module point temperature testing tool. Background Art

[0002] In order to meet the requirements of different working environments, the key parameters of optical modules are tested in low-temperature, normal-temperature and high-temperature environments during production. The traditional testing method is to insert the optical module into a metal cage fixed on the test board, and then place the whole in a low-temperature box, room-temperature box and high-temperature box for testing. The temperature measurement module is used to measure the working temperature of the optical module in the metal cage. This testing method has the following defects:

[0003] 1) Due to the use of high temperature box and low temperature box testing, the cost is relatively high;

[0004] 2) The traditional temperature measurement module cannot always be close to the optical module, resulting in large errors in the test results;

[0005] 3) When the optical module is inserted into the metal cage, the metal cage is prone to scratching the surface of the optical module, resulting in a decrease in yield. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an optical module point temperature test tool to overcome the deficiencies in the above-mentioned prior art.

[0007] The technical solution of the utility model for solving the above technical problems is as follows: a kind of optical module spot temperature testing tool, comprising: a test board, a test cover for inserting the optical module is fixed on the test board, a heating module is fixed on the test cover, and the heat generated by the heating module is transmitted to the optical module through the test cover; a temperature measuring hole is provided on the test cover, a temperature sensing head in contact with the optical module inserted in the test cover is arranged in the temperature measuring hole, a pressing structure is fixed on the test cover for pressing the temperature sensing head downward so that the temperature sensing head is always in contact with the optical module, and the temperature sensing head transmits the sensed temperature to the spot thermometer through the temperature sensing line.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the test cover includes: a base and an upper cover arranged on the base, the base has a slot adapted to the optical module, the base and the upper cover are fixed to the test board by screws, the upper cover is made of metal, the heating module is fixed on the upper cover, and the temperature measuring hole is opened on the upper cover.

[0010] Furthermore, the base and the upper cover are made of materials with lower hardness than the optical module structural components.

[0011] Furthermore, the base is made of metal or non-metal material.

[0012] Furthermore, a plurality of positioning posts are respectively provided on the lower surface and the upper surface of the base, a lower positioning hole is provided on the test board at each positioning post corresponding to the lower surface of the base, and an upper positioning hole is provided on the upper cover at each positioning post corresponding to the upper surface of the base.

[0013] Furthermore, the heating module includes: a heat-conducting block and a heating rod fixed on the heat-conducting block, and the heat-conducting block is fixed on the upper cover.

[0014] Furthermore, the pressing structure includes: a pressing block, one end of which is located in the temperature measuring hole, and the other end is rotatably connected to the test cover via a double torsion spring. Under the elastic force of the double torsion spring, the pressing block presses the temperature sensing head down so that it always fits with the optical module.

[0015] Furthermore, a wire hole is provided on the pressing block, and the temperature sensing wire passes through the wire hole.

[0016] The beneficial effects of the utility model are:

[0017] Normal temperature test: The heating module does not work. The optical module is inserted into the test cover. During the test, the optical module will generate heat. The optical module transmits the temperature to the temperature sensor. Then the temperature sensor transmits the actual temperature of the optical module to the point thermometer through the temperature sensing line to truly reflect the real-time temperature of the optical module.

[0018] Low temperature test: The heating module does not work, the optical module is inserted into the test cover, and the tooling is placed in the low temperature box. When the optical module is tested, the low temperature of the low temperature box reduces the temperature of the optical module, and the low temperature optical module transmits the temperature to the temperature sensing head, and then the temperature sensing head transmits the actual temperature of the optical module to the point thermometer through the temperature sensing line to truly reflect the real-time temperature of the optical module;

[0019] High temperature test: The heating module works, and the heat generated by the heating module is transferred to the optical module through the test cover, so that the temperature of the optical module is always kept within the predetermined high temperature range. The optical module transfers the temperature to the temperature sensing head, and then the temperature sensing head transfers the actual temperature of the optical module to the point thermometer through the temperature sensing line to truly reflect the real-time temperature of the optical module;

[0020] The test fixture has its own heating module, so high temperature box is not needed for high temperature testing, which can reduce costs.

[0021] The pressing structure ensures that the temperature sensor is always in close contact with the optical module, which can effectively ensure the accuracy of the test results.

[0022] The material hardness of the base is lower than that of the optical module structure, and the material hardness of the upper cover is lower than that of the optical module structure, thereby preventing the surface of the optical module from being scratched and improving the yield;

[0023] A temperature measuring hole is opened on the upper cover of the test hood, and the temperature sensing head is placed in the temperature measuring hole and pressed by a pressing block of the pressing structure, which can effectively prevent excessive air flow and the risk of large temperature deviation on the temperature sensing head, thereby improving the test pass rate of the optical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the optical module point temperature test tooling in the utility model;

[0025] Figure 2 This is a cross-sectional view of the optical module point temperature test fixture in the utility model;

[0026] Figure 3 This is an assembly diagram of the upper cover and the double torsion springs in the utility model;

[0027] Figure 4 It is an assembly diagram of the test plate and the base in the utility model;

[0028] Figure 5 It is a structural diagram of the base in the utility model;

[0029] Figure 6 It is a structural diagram of the test board in the utility model;

[0030] Figure 7 This is an application diagram of the optical module point temperature testing tooling in the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Test board, 110, lower positioning hole, 2. Test cover, 210, base, 211, slot, 212, positioning column, 220, upper cover, 221, temperature measuring hole, 222, upper positioning hole, 3. Heating module, 310, thermal block, 320, heating rod, 4. Temperature sensing head, 5. Pressing structure, 510, pressing block, 511, wire hole, 520, double torsion spring, 6. Temperature sensing line, 7. Point thermometer. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Example 1

[0035] like Figure 1 , Figure 2 , Figure 7 As shown, an optical module point temperature test tool includes:

[0036] A test board 1, a test cover 2 for inserting an optical module is fixed on the test board 1, a heating module 3 is fixed on the test cover 2, and the heat generated by the heating module 3 is transmitted to the optical module through the test cover 2; a temperature measuring hole 221 is provided on the test cover 2, a temperature sensing head 4 in contact with the optical module inserted in the test cover 2 is arranged in the temperature measuring hole 221, a pressing structure 5 is fixed on the test cover 2 for pressing the temperature sensing head 4 downward so that the temperature sensing head 4 is always in contact with the optical module, the temperature sensing head 4 transmits the sensed temperature to the spot thermometer 7 through the temperature sensing line 6, the temperature sensing head 4 can measure the actual temperature of the optical module, and transmit the temperature information to the spot thermometer 7 through the temperature sensing line 6;

[0037] Optical module testing is divided into: normal temperature, low temperature and high temperature testing

[0038] Normal temperature test: The heating module 3 does not work, and the optical module is inserted into the test cover 2. During the test of the optical module, it will generate heat. The optical module transmits the temperature to the temperature sensing head 4, and then the temperature sensing head 4 transmits the actual temperature of the optical module to the point thermometer 7 through the temperature sensing line 6 to truly reflect the real-time temperature of the optical module;

[0039] Low temperature test: The heating module 3 does not work, the optical module is inserted into the test cover 2, and the tooling is placed in the low temperature box. When the optical module is tested, the low temperature of the low temperature box reduces the temperature of the optical module, and the low temperature optical module transmits the temperature to the temperature sensing head 4, and then the temperature sensing head 4 transmits the actual temperature of the optical module to the point thermometer 7 through the temperature sensing line 6 to truly reflect the real-time temperature of the optical module;

[0040] High temperature test: The heating module 3 works, and the heat generated by the heating module 3 is transferred to the optical module through the test cover 2, so that the temperature of the optical module is always kept in the predetermined high temperature range. The optical module transfers the temperature to the temperature sensing head 4, and then the temperature sensing head 4 transfers the actual temperature of the optical module to the point thermometer 7 through the temperature sensing line 6, so as to truly reflect the real-time temperature of the optical module;

[0041] Whether it is a normal temperature, low temperature or high temperature test, the test software has a fixed value. If the actual temperature of the spot thermometer 7 is within ±2 degrees from the fixed value of the test software, the test is qualified. Otherwise, the test cannot be continued.

[0042] Example 2

[0043] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0044] The test cover 2 includes: a base 210 and an upper cover 220, the upper cover 220 is arranged on the base 210, the base 210 has a slot 211 adapted to the optical module, the base 210 and the upper cover 220 are fixed to the test board 1 by screws, the upper cover 220 is made of metal, the heating module 3 is fixed on the upper cover 220, the metal upper cover 220 is conducive to transferring the heat generated by the heating module 3 to the optical module, the temperature measuring hole 221 is opened on the upper cover 220, the base 210 replaces the lower half of the conventional metal cage, and the upper cover 220 replaces the upper half of the conventional metal cage.

[0045] Furthermore, the base 210 has a lower hardness than the optical module components, and the upper cover 220 has a lower hardness than the optical module components, thereby preventing the optical module surface from being scratched and improving the yield.

[0046] Since the heating module 3 is fixed on the upper cover 220 , the material requirement for the base 210 is that it can be either metal or non-metal. Whether metal or non-metal does not affect the test.

[0047] Example 3

[0048] like Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, this embodiment is a further improvement on the basis of embodiment 2, and the details are as follows:

[0049] A plurality of positioning posts 212 are provided on the lower surface of the base 210. The positioning posts 212 on the lower surface of the base 210 replace the positioning springs of the metal cage. The test board 1 is provided with lower positioning holes 110 at the positions corresponding to the positioning posts 212 on the lower surface of the base 210. The positioning posts 212 on the lower surface of the base 210 cooperate with the lower positioning holes 110 to ensure that the base 210 is accurately installed at the expected position.

[0050] A plurality of positioning posts 212 are provided on the upper surface of the base 210, and upper positioning holes 222 are provided on the upper cover 220 at locations corresponding to the positioning posts 212 on the upper surface of the base 210. The upper cover 220 can be accurately installed in the expected position by cooperating with the positioning posts 212 on the upper surface of the base 210 and the upper positioning holes 222.

[0051] Example 4

[0052] like Figure 1 , Figure 2 As shown, this embodiment is a further improvement on the basis of Embodiment 2 or 3, and the details are as follows:

[0053] The heating module 3 includes: a heat conductive block 310 and a heating rod 320. The heating rod 320 is fixed on the heat conductive block 310, and the heat conductive block 310 is fixed on the upper cover 220. When the heating rod 320 is powered on, the heat generated by the heating rod 320 is transferred to the heat conductive block 310, and then transferred from the heat conductive block 310 to the upper cover 220, and finally transferred from the upper cover 220 to the optical module.

[0054] Example 5

[0055] like Figure 2 As shown, this embodiment is a further improvement on any one of Embodiments 1 to 4, and the details are as follows:

[0056] The pressing structure 5 includes: a pressing block 510, one end of the pressing block 510 is in the temperature measuring hole 221, and the other end of the pressing block 510 is rotatably connected to the test cover 2 via a double torsion spring 520. The pressing block 510 presses the temperature sensing head 4 downward under the elastic force of the double torsion spring 520 so that it always fits with the optical module; the optical module is inserted into the test cover 2, which can lift the temperature sensing head 4, and there is a downward pressure through the double torsion spring 520. With the elastic force of the double torsion spring 520, the pressing block 510 presses the temperature sensing head 4 downward so that it always fits with the optical module, so that the temperature of the optical module can be measured more accurately. The temperature sensing head 4 is in the temperature measuring hole 221 and is pressed by the pressing block 510, which can effectively avoid excessive air flow, so as to avoid the risk of large temperature deviation on the temperature sensing head, thereby improving the pass rate of the optical module test. A wire hole 511 is provided on the pressing block 510, and the temperature sensing wire 6 passes through the wire hole 511.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An optical module point temperature test tool, characterized in that: include: A test board (1), a test cover (2) for inserting an optical module is fixed on the test board (1), a heating module (3) is fixed on the test cover (2), and heat generated by the heating module (3) is transferred to the optical module via the test cover (2); a temperature measuring hole (221) is provided on the test cover (2), a temperature sensing head (4) in contact with the optical module inserted into the test cover (2) is arranged in the temperature measuring hole (221), a pressing structure (5) is fixed on the test cover (2) for pressing the temperature sensing head (4) downward so that the temperature sensing head (4) is always in contact with the optical module, and the temperature sensing head (4) transfers the sensed temperature to a point thermometer (7) via a temperature sensing line (6).

2. According to claim 1, an optical module point temperature test tool is characterized in that: The test cover (2) comprises: a base (210) and an upper cover (220) arranged on the base (210); the base (210) has a slot (211) adapted to the optical module; the base (210) and the upper cover (220) are fixed to the test board (1) via screws; the upper cover (220) is made of metal; the heating module (3) is fixed on the upper cover (220); and the temperature measuring hole (221) is opened on the upper cover (220).

3. According to claim 2, an optical module point temperature test tool is characterized in that: The base (210) and the upper cover (220) have a material hardness lower than that of the optical module structural components.

4. According to claim 2, an optical module point temperature test tool is characterized in that: The base (210) is made of metal or non-metal material.

5. According to claim 2, an optical module point temperature test tool is characterized in that: A plurality of positioning columns (212) are respectively provided on the lower surface and the upper surface of the base (210); a lower positioning hole (110) is provided on the test board (1) at each positioning column (212) on the lower surface of the corresponding base (210); and an upper positioning hole (222) is provided on the upper cover (220) at each positioning column (212) on the upper surface of the corresponding base (210).

6. The optical module point temperature test tool according to claim 2, characterized in that: The heating module (3) comprises: a heat-conducting block (310) and a heating rod (320) fixed on the heat-conducting block (310); the heat-conducting block (310) is fixed on the upper cover (220).

7. The optical module point temperature test tool according to claim 1, characterized in that: The pressing structure (5) comprises: a pressing block (510), one end of the pressing block (510) is located in the temperature measuring hole (221), and the other end is rotatably connected to the test cover (2) via a double torsion spring (520); under the elastic force of the double torsion spring (520), the pressing block (510) presses the temperature sensing head (4) downward so that it is always in contact with the optical module.

8. The optical module point temperature test tool according to claim 7, characterized in that: The pressing block (510) is provided with a wire passing hole (511), and the temperature sensing wire (6) passes through the wire passing hole (511).

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