Test fixture for photometric integrating sphere

Abstract

The utility model discloses a test fixture for a photometric integrating sphere, which comprises a base box and a rotating column, the top surface of the base box is rotatably connected with the rotating column in a penetrating manner, the top surface of the rotating column is fixedly provided with a rotating disc, and the top surface of the rotating disc is provided with a test groove. The beneficial effects of the utility model are that by adopting the rotating disc which rotates in a positioning manner and the testing grooves which are arranged on the top surface of the rotating disc and are distributed at equal angles, when a packaging sample is tested, the packaging sample can be placed in the testing grooves and is electrically connected with the wiring terminal, and then the light inlet position of the photometric integrating sphere is adjusted, so that the testing accuracy is improved. In the testing process, the stepping motor drives the driving gear to rotate, further drives the driven gear to rotate, further drives the rotating column and the rotating disc to rotate in a positioning mode, enables the packaged sample to be automatically aligned with the incoming light in the rotation switching process, improves the detection accuracy, and reduces the detection cost. And therefore, the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductors, and specifically, to a test fixture for a photometric integrating sphere. Background Art

[0002] Equipment for testing the luminous flux of LEDs usually uses an integrating sphere tester for optoelectronic testing. Conventional integrating sphere testing is usually customized specifically according to the size differences of the package brackets, and during testing, only the packaged samples of individual LED chips can be sequentially placed into the integrating sphere through the package brackets for testing. After the testing is completed, the package brackets need to be taken out of the integrating sphere and new packaged samples need to be replaced to repeat the above operations for testing.

[0003] After retrieval, it is found that the application number is CN202321252548.6 and the name is an integrating sphere test fixture. This application points out that when testing a large number of packaged samples, it is very cumbersome and time-consuming to pick and place the packaged samples multiple times, and it is easy to mix up the test order of the packaged samples, resulting in problems in testing. If a large packaging bracket is made to place multiple packaged samples, a new integrating sphere test device needs to be customized so that its inlet size can accommodate the large packaging bracket, and the cost of customizing the integrating sphere test device is very high. By setting multiple detection slots on the support plate, the fixture can place multiple packaged samples, and then the drive assembly drives the support plate to rotate relative to the control rod, so that the volume of the fixture changes. Without changing the size of the integrating sphere test device, multiple packaged samples can be placed in the integrating sphere. Specifically, the packaged samples are arranged in the detection slots, and the support plate is parallel to the control rod. At this time, the volume of the fixture is small. Then, the entire support plate and a part of the control rod are extended into the integrating sphere, and the drive assembly is controlled to drive the support plate to rotate relative to the control rod, so that the support plate and the control rod are perpendicular to each other, and the detection slots face the direction of the integrating sphere. Then, the power supply of each detection slot is controlled in sequence through the button to detect the packaged samples on the fixture in sequence. The utility model solves the problem in the prior art that there is a lack of an integrating sphere detection fixture that can carry multiple packaged samples into the integrating sphere test device for testing without changing the integrating sphere test device. However, during the actual test of the integrating sphere, three through holes are often opened on the surface of the integrating sphere, two of which are used to install the incident light source, and the other is used to install the receiving device. The fixture used for carrying and installing is often installed inside the integrating sphere to avoid the integrating sphere affecting the spherical structure of the inner wall of the integrating sphere. Therefore, this application needs to open an inlet, which changes the structure of the integrating sphere, easily causes problems with the reflection on the inner wall of the integrating sphere, and affects the stability of the test. At the same time, unplugging and installing the packaging bracket is not more convenient than opening the integrating sphere for installation. At the same time, since the packaged samples in this application cannot be adjusted in position, it is necessary for the staff to frequently adjust the incident light position, which instead increases the number of steps in use and is more troublesome. At the same time, it is also necessary for the staff to frequently switch the switch, and the degree of automation is low. The convenience of use can be further improved.

[0004] In response to the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present utility model provides a test fixture for a photometric integrating sphere, which has the advantages of accurate positioning, high detection efficiency, and high automation level, thereby solving the problems in the above background art.

[0007] (2) Technical Solutions

[0008] To achieve the above advantages of accurate positioning, high detection efficiency, and high automation level, the specific technical solution adopted by the present utility model is as follows:

[0009] A test fixture for a photometric integrating sphere, comprising a base box and a rotating column. The top surface of the base box is rotatably connected through the rotating column, and a rotating disk is fixedly installed on the top surface of the rotating column. A test groove is formed on the top surface of the rotating disk. A bottom groove is formed inside the rotating disk below the test groove, and a power receiving coil is installed inside the bottom groove. An outer shell is fixedly installed on the top surface of the base box, and a power sending coil is fixedly installed inside the outer shell. A driven gear is fixedly sleeved on the outer surface of the rotating column. A stepping motor is fixedly installed inside the base box, and a driving gear is installed at the output end of the stepping motor. The driving gear meshes with the driven gear. A wiring terminal is fixedly installed on the inner bottom surface of the test groove, and the input end of the wiring terminal is electrically connected to the output end of the power receiving coil.

[0010] Furthermore, the base box and the rotating disk are coaxially arranged, and the base box and the rotating disk have the same diameter.

[0011] Furthermore, a plurality of test grooves are equiangularly distributed along the vertical central axis of the rotating disk, and the connecting line of the centers of the test grooves is perpendicularly intersected with the vertical central axis of the power sending coil.

[0012] Furthermore, the bottom surface of the rotating column is rotatably connected to the inner bottom surface of the base box through a rotating connection seat, and the rotating column and the rotating disk are coaxially arranged.

[0013] Furthermore, the power sending coil is electrically connected to an external power supply through a conversion circuit, and the power sending coil and the power receiving coil are used in a matching manner.

[0014] Furthermore, the rotating disk is made of a plastic structure, and a diffuse reflection layer is sprayed on the outer surface of the rotating disk.

[0015] Furthermore, the outer shell is made of a plastic structure, and diffuse reflection layers are sprayed on the outer surfaces of the outer shell and the base box.

[0016] Furthermore, the stepping angle of the stepping motor is the same as the included angle between the test grooves.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a test fixture for a photometric integrating sphere, having the following beneficial effects:

[0019] (1) The present utility model adopts a rotating disk with positioning rotation and equally-angularly distributed test slots opened on the top surface of the rotating disk. When testing a packaged sample, the packaged sample can be placed into the test slot to complete the electrical connection with the wiring terminal. Subsequently, the light inlet position of the photometric integrating sphere is adjusted so that the incident light is aligned with the packaged sample inside the test slot directly above the housing, and then the test can be started. During the test process, the stepping motor drives the driving gear to rotate, which in turn drives the driven gear to rotate, and further drives the rotating column and the rotating disk to perform positioning rotation, enabling the packaged sample to automatically align with the incident light during rotation switching, improving the accuracy of detection, and thus enhancing the convenience of use.

[0020] (2) The present utility model adopts a power receiving coil and a power transmitting coil. During detection, a current is passed through the power transmitting coil via a conversion circuit to generate magnetic flux. When the rotating disk rotates to a position where the power receiving coil is directly above the power transmitting coil, the power receiving coil receives the magnetic flux and generates a current that is transmitted to the packaged sample through the wiring terminal, completing automatic wireless power supply, eliminating the trouble of the staff switching the power supply switch, improving the automation level and work efficiency, greatly facilitating the rotational power supply and automatic connection of the packaged sample, and significantly enhancing the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of a test fixture for a photometric integrating sphere proposed by the present utility model;

[0023] Figure 2 is a front view of a test fixture for a photometric integrating sphere proposed by the present utility model;

[0024] Figure 3 is a schematic external structure diagram of a rotating box proposed by the present utility model;

[0025] Figure 4 is a schematic external structure diagram of a base box proposed by the present utility model.

[0026] In the figure:

[0027] 1. Base box; 2. Rotating column; 3. Rotating connection seat; 4. Driven gear; 5. Stepping motor; 6. Driving gear; 7. Rotating disk; 8. Test slot; 9. Bottom slot; 10. Power receiving coil; 11. Wiring terminal; 12. Housing; 13. Power transmitting coil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To further illustrate each embodiment, the present utility model provides accompanying drawings, which are part of the disclosure of the present utility model. They are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present utility model, a test fixture for a photometric integrating sphere is provided.

[0030] Now, the present utility model will be further described in conjunction with the accompanying drawings and specific implementation manners. As Figures 1-4 shown, a test fixture for a photometric integrating sphere according to an embodiment of the present utility model includes a base box 1 and a rotating column 2. The top surface of the base box 1 is rotatably connected through the rotating column 2, and a rotating disk 7 is fixedly installed on the top surface of the rotating column 2. A test slot 8 is formed on the top surface of the rotating disk 7. A bottom slot 9 is formed inside the rotating disk 7 below the test slot 8, and a power receiving coil 10 is installed inside the bottom slot 9. An outer shell 12 is fixedly installed on the top surface of the base box 1. The base box 1 is fixedly connected to the inside of the photometric integrating sphere, and a power sending coil 13 is fixedly installed inside the outer shell 12. A driven gear 4 is fixedly sleeved on the outer surface of the rotating column 2. A stepping motor 5 is fixedly installed inside the base box 1, and a driving gear 6 is installed at the output end of the stepping motor 5. The driving gear 6 meshes with the driven gear 4. A wiring terminal 11 is fixedly installed on the inner bottom surface of the test slot 8, and the input end of the wiring terminal 11 is electrically connected to the output end of the power receiving coil 10, which is a common wiring structure. When testing the encapsulated sample, the encapsulated sample can be placed into the test slot 8 to complete the electrical connection with the wiring terminal 11. Subsequently, adjust the light incident position of the photometric integrating sphere to make the incident light align with the encapsulated sample inside the test slot 8 directly above the outer shell 12, and then the test can be started. During the test, the stepping motor 5 drives the driving gear 6 to rotate, which in turn drives the driven gear 4 to rotate, and then drives the rotating column 2 and the rotating disk 7 to rotate in place, so that the encapsulated sample automatically aligns with the incident light when rotating and switching, improving the accuracy of detection and thus improving the convenience of use. At the same time, during the detection, a current is passed through the power sending coil 13 through a conversion circuit to generate magnetic flux. When the rotating disk 7 rotates to the position where the power receiving coil 10 is directly above the power sending coil 13, the power receiving coil 10 receives the magnetic flux and generates a current, which is transmitted to the encapsulated sample through the wiring terminal 11 to complete automatic wireless power supply, eliminating the trouble of the staff switching the power supply switch, improving the automation level and work efficiency, greatly facilitating the rotational power supply and automatic connection of the encapsulated sample, and significantly improving the work efficiency.

[0031] In one embodiment, the base box 1 and the rotating disk 7 are coaxially arranged, and the base box 1 and the rotating disk 7 have the same diameter, which is convenient for the installation of the outer shell 12 and the power sending coil 13.

[0032] In one embodiment, a plurality of test slots 8 are equiangularly distributed along the vertical central axis of the rotating disk 7, and the connecting line of the centers of the test slots 8 intersects the vertical central axis of the power transmission coil 13 perpendicularly, ensuring that the power receiving coil 10 can be rotated directly above the power transmission coil 13.

[0033] In one embodiment, the bottom surface of the rotating column 2 is rotatably connected to the inner bottom surface of the base box 1 through a rotary connecting seat 3, and the rotating column 2 and the rotating disk 7 are coaxially arranged, improving the rotational stability of the rotating column 2.

[0034] In one embodiment, the power transmission coil 13 is electrically connected to an external power supply through a conversion circuit, and the power transmission coil 13 and the power receiving coil 10 are used in combination, which is a common wireless power supply structure and will not be elaborated here.

[0035] In one embodiment, the rotating disk 7 is made of plastic, and a diffuse reflection layer is sprayed on the outer surface of the rotating disk 7. The material of the diffuse reflection layer is the same as that of the diffuse reflection layer on the inner wall of the photometric integrating sphere, avoiding affecting the diffuse reflection efficiency of the photometric integrating sphere.

[0036] In one embodiment, the outer shell 12 is made of plastic to avoid affecting the passage of magnetic flux, and diffuse reflection layers are sprayed on the outer surfaces of both the outer shell 12 and the base box 1.

[0037] In one embodiment, the stepping angle of the stepping motor 5 is the same as the included angle between the test slots 8, facilitating positioning and rotation.

[0038] Working principle:

[0039] When performing the encapsulation sample test, the encapsulation sample can be placed in the test slot 8 to complete the electrical connection with the wiring terminal 11. Subsequently, the light incident position of the photometric integrating sphere is adjusted so that the incident light is aligned with the encapsulation sample inside the test slot 8 directly above the outer shell 12, and then the test can be started. During the test, the stepping motor 5 drives the driving gear 6 to rotate, which in turn drives the driven gear 4 to rotate, and then drives the rotating column 2 and the rotating disk 7 to rotate and position, enabling the encapsulation sample to automatically align with the incident light during the rotation and switching, improving the detection accuracy, and thus improving the convenience of use. At the same time, during the detection, a current is passed through the power transmission coil 13 through the conversion circuit to generate magnetic flux. When the rotating disk 7 rotates to make the power receiving coil 10 located directly above the power transmission coil 13, the power receiving coil 10 receives the magnetic flux and generates a current, which is transmitted to the encapsulation sample through the wiring terminal 11 to complete automatic wireless power supply, eliminating the trouble of the staff switching the power supply switch, improving the automation level and work efficiency, greatly facilitating the rotary power supply and automatic connection of the encapsulation sample, and significantly improving the work efficiency.

[0040] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A test fixture for a photometric integrating sphere, characterized in that, It includes a base box (1) and a rotating column (2). The top surface of the base box (1) is penetrated and rotatably connected with the rotating column (2). A rotating disc (7) is fixedly installed on the top surface of the rotating column (2). A test groove (8) is formed on the top surface of the rotating disc (7). A bottom groove (9) is formed inside the rotating disc (7) below the test groove (8). A power receiving coil (10) is installed inside the bottom groove (9). A housing (12) is fixedly installed on the top surface of the base box (1). A power transmitting coil (13) is fixedly installed inside the housing (12). A driven gear (4) is fixedly sleeved on the outer surface of the rotating column (2). A stepping motor (5) is fixedly installed inside the base box (1). A driving gear (6) is installed at the output end of the stepping motor (5). The driving gear (6) meshes with the driven gear (4). A wiring terminal (11) is fixedly installed on the inner bottom surface of the test groove (8). The input end of the wiring terminal (11) is electrically connected to the output end of the power receiving coil (10).

2. The test fixture for a photometric integrating sphere according to claim 1, characterized in that, The base box (1) and the rotating disc (7) are coaxially arranged, and the base box (1) and the rotating disc (7) have the same diameter.

3. The test fixture for a photometric integrating sphere according to claim 1, characterized in that, A plurality of the test grooves (8) are angularly distributed along the vertical central axis of the rotating disc (7), and the connecting line of the centers of the test grooves (8) is vertically and perpendicularly intersected with the vertical central axis of the power transmitting coil (13).

4. A test fixture for a photometric integrating sphere according to claim 1, characterized in that, The bottom surface of the rotating column (2) is rotatably connected to the inner bottom surface of the base box (1) through a rotary connection seat (3), and the rotating column (2) and the rotating disc (7) are coaxially arranged.

5. A test fixture for a photometric integrating sphere according to claim 1, characterized in that, The power transmitting coil (13) is electrically connected to an external power supply through a conversion circuit, and the power transmitting coil (13) and the power receiving coil (10) are used in a matching manner.

6. The test fixture for a photometric integrating sphere according to claim 1, characterized in that, The rotating disc (7) is made of plastic, and a diffuse reflection layer is sprayed on the outer surface of the rotating disc (7).

7. The test fixture for a photometric integrating sphere according to claim 1, characterized in that, The housing (12) is made of plastic, and diffuse reflection layers are sprayed on the outer surfaces of the housing (12) and the base box (1).

8. A test fixture for a photometric integrating sphere according to claim 1, characterized in that, The stepping angle of the stepping motor (5) is the same as the included angle between the test grooves (8).

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