CN108663549B - Positioning device and testing system - Google Patents
Positioning device and testing system Download PDFInfo
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- CN108663549B CN108663549B CN201810525611.6A CN201810525611A CN108663549B CN 108663549 B CN108663549 B CN 108663549B CN 201810525611 A CN201810525611 A CN 201810525611A CN 108663549 B CN108663549 B CN 108663549B
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 27
- 230000017525 heat dissipation Effects 0.000 claims description 21
- 239000000523 sample Substances 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 238000001228 spectrum Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2632—Circuits therefor for testing diodes
- G01R31/2635—Testing light-emitting diodes, laser diodes or photodiodes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The application relates to a positioning device and a testing system, and belongs to the field of LED device detection. The application proposes a positioner, positioner includes: a first support for supporting the positioning device; the first rotating assembly is fixedly connected with the first support; the fixed component is connected and fixed with the first rotating component; wherein, first rotating component includes first rotation axis, fixed subassembly passes through first rotating component realizes the rotation. According to the LED device, the LED device is fixed, rotation is achieved through the rotating assembly, and measurement of the whole light space distribution of the LED device is achieved.
Description
Technical Field
The present disclosure relates to LED device inspection apparatus, and more particularly, to a positioning device and a testing system.
Background
A Light Emitting Diode (LED) is applied as a fourth generation light source in the field of general lighting, and is significantly different from a conventional light source such as an incandescent lamp, a fluorescent lamp, etc., whether it is a light emitting principle or a light emitting characteristic, even including a structure and a driving of an illumination light source. Therefore, testing LED light sources is critical.
Fig. 1 is a schematic diagram of a specific structure of a conventional LED device. The LED light source 100 includes a light emitting surface 120, a case 140 for fixing the light emitting surface 120, and a positive electrode pin 110 and a negative electrode pin 130 for connecting an external power source. An LED light emitting chip and a driving circuit are generally fixed inside the light emitting surface 120. After the positive electrode pin 110 and the negative electrode pin 130 form a loop with an external circuit, the light emitting surface 120 emits light.
However, due to the non-uniformity of the light intensity distribution of the LED light emitting chip and the non-uniformity of the fluorescent powder coating in the LED device package, the non-uniformity of the light spatial distribution of the LED device exists at present. And the non-uniformity of the light color space distribution is an important index for evaluating the quality of the LED device. Therefore, it is necessary to detect each angle of illumination so that defective products can be detected before use. Since the illumination angle of the device is a hemispherical coverage, all angles are measured.
Disclosure of Invention
The purpose of this application is to provide a positioner and test system, aims at solving among the prior art because of the light emitting area slope that the welding leads to, makes repetition measurement accuracy poor, weld time long, leads to defects such as device damage, can conveniently obtain the measurement of realizing LED device light space distribution information fast.
In order to solve the technical problems, one technical scheme adopted by the application is as follows:
a first support;
the first rotating assembly is fixed on the first support; and
the fixed assembly is arranged on the first rotating assembly and used for fixing the LED device;
the first rotating assembly at least comprises a first rotating shaft, and the first rotating shaft is used for driving the fixed assembly to rotate on a first plane so that the LED device can switch a plurality of luminous areas.
In some embodiments, the fixing component comprises a heat dissipation power supply component, the heat dissipation power supply component comprises a heat dissipation plate, a probe and a fixing block, and the probe is fixed with the heat dissipation plate through the fixing block; one end of the probe is respectively connected with two electrodes of the LED device and is used for providing power for the LED device.
In some embodiments, the fixing assembly comprises at least two elastic pressing plates, wherein the elastic pressing plates comprise a fixing end and a telescopic end, and the fixing end and the telescopic end are perpendicular to each other.
In some embodiments, a through hole is formed at one end of the heat dissipation plate, the probe and the telescopic end respectively penetrate through the through hole, and the probe and the fixed end are respectively located at two sides of two electrodes of the LED device.
In some embodiments, the heat dissipation power supply assembly further includes a refrigeration portion, the refrigeration portion includes a cooling fin and a cooling block, a heat absorbing surface of the cooling fin is attached to a lower surface of the heat dissipation plate, a heat dissipating surface of the cooling fin is attached to an upper surface of the cooling block, and a plurality of communication grooves are formed in the cooling block, and cooling liquid circulates in the cooling block through the communication grooves.
In some embodiments, the first rotating assembly comprises a first rotating shaft, a first bracket and an adapter plate, the positioning device comprises a mounting substrate, one end of the first rotating shaft is rotationally connected with the first bracket, and the other end of the first rotating shaft is fixedly connected with the adapter plate; the fixing component is fixed with the adapter plate through the mounting substrate.
In some embodiments, the first rotating shaft is rotatably connected with the bracket through a limit screw, a limit groove is formed in one end, connected with the first rotating shaft, of the bracket, and the limit screw is connected with the first rotating shaft through the limit groove, so that the first rotating shaft drives the fixing assembly to rotate in a first plane.
In order to solve the technical problems, one technical scheme adopted by the application is as follows:
the test system is used for detecting the luminous characteristics of the LED device and comprises a detection component and a positioning device, wherein the detection component is arranged adjacent to the positioning device and comprises a detection device and a second rotating component, the detection device is used for detecting the spectrum information of the LED device in a plurality of luminous areas, and the second rotating component is used for driving the detection device to rotate on a second plane so as to acquire the light space distribution information of the LED device;
wherein the positioning device is any one of the positioning devices described above.
In some embodiments, the detection assembly includes a support bar, a second rotation assembly, and a second mount; the second rotating assembly comprises a driving motor and a motor shaft, the second support comprises a horizontal frame, and the driving motor is fixed on the horizontal frame; the detection device is connected with the motor shaft through the support rod.
In some embodiments, the detection assembly further comprises a plurality of displacement sensors and a sensing piece, the displacement sensors are provided with notches, the sensing piece is fixed on the support rod, and the sensing piece follows the support rod to rotate in the second plane.
The beneficial effects of this application are: compared with the prior art, the positioning device and the testing system provided by the application realize the rotation of the LED device on the first plane through the lateral fixation of the LED device through the fixing component and the rotation of the LED device on the first plane through the rotation component; meanwhile, the application combines the water cooling circulation technology and the semiconductor refrigeration technology to realize high junction temperature stability in the measuring process; for the space motion measuring part, the mechanism adopts high-precision motor control, and the light space distribution curve test of approximately 180 degrees is realized in the X and Y directions of the first plane.
Drawings
Fig. 1 is a schematic structural view of an LED device in the prior art of the present application;
FIG. 2 is a schematic view of a positioning device of the present application;
FIG. 3 is a schematic structural view of a securing assembly in one embodiment of the present application;
FIG. 4 is an enlarged view of a portion of the A frame of FIG. 3;
FIG. 5 is a schematic cross-sectional view of various elements in one embodiment of the present application;
FIG. 6 is a schematic diagram of a test system according to the present application;
FIG. 7 is a schematic structural diagram of a detection assembly in one embodiment of the present application;
fig. 8 is a partial enlarged view of the B frame in fig. 7.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It is noted that directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus are used for better, more clear explanation and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the existing LED device testing apparatus, when measuring the LED device, the light emitting surface of the light receiving device must be oriented to the upper direction, so that more soldering tin is needed to fix the LED device when the LED light source is welded to the circuit board, the manufacturing cost is increased, the longer time is needed to be spent in the welding process, the packaging structure and quality of the LED device are damaged easily due to the high temperature of the welding gun, the light emitting surface may be inclined due to the soldering tin, and the light receiving device cannot completely receive light, so that the measurement is inaccurate.
Based on this, as shown in fig. 2, fig. 2 is a schematic structural diagram of a positioning device proposed in the present application. In this embodiment, the positioning device 200 includes a first support 250, a first rotating assembly 220, and a stationary assembly 210. The first holder 250 includes a main holder 251, a sub-holder 252 fixed to the main holder 251 for reinforcing a support, and a support plate 253 fixed to a work platform (not shown). The main bracket 251 supports the entire positioning device, and is fixed to the support plate 253 together with the sub-bracket 252.
Wherein the fixing assembly 210 is fixed on the first rotating assembly 220 for fixing the LED device; the first rotating assembly 220 is rotatably coupled to one end of the main bracket 251. Specifically, the first rotating assembly 220 includes a first rotating shaft 221, and an adapter plate 222 and an adapter ring 223 respectively connected to both ends of the first rotating shaft 221, the adapter ring 223 is fixed to the main bracket 251, the first rotating shaft 221 is rotatably connected to the main bracket 251 through the adapter ring 223, and the fixing assembly 210 is connected to the first rotating shaft 221 through the adapter plate 222.
When the first rotating assembly 220 rotates around the first rotation axis, the LED device is fixed on the fixing assembly 210, and the fixing assembly 210 can drive the LED device to rotate, so that the LED device can switch different light emitting areas to emit light in the same irradiation direction during detection. Thus, when the detection device positioned in a certain direction receives the light intensity information, the detection device can receive the light emitted by different areas of the LED device. The first rotating component 220 can rotate the LED device, so that the detection device can obtain light space distribution information of the LED device more easily.
In this embodiment, a limit groove 2511 is provided at one end of the main bracket 251 connected to the first rotation shaft 221, and the first rotation assembly 220 further includes a limit screw 224, where the limit screw 224 connects and fixes the main bracket 251 and the first rotation shaft 221 through the limit groove 2511.
It should be noted that the limit slot 2511 is further used for adjusting the rotation angle of the first rotation shaft 221, and the limit screw 224 can adjust the tightness between the nut and the main bracket 251. When the LED device needs to be adjusted to a proper rotation angle, the limit screw 224 connected with the main bracket 251 needs to be rotated and loosened, then the rotation shaft drives the LED device to rotate to a selected angle, and then the limit screw 224 is screwed.
In some embodiments, the first rotating assembly 220 may implement a rotation angle of 90 degrees, where the number of limit grooves 2511 and the number of limit screws 224 are 2, the opening direction of the limit grooves 2511 is a circumference, and the circumference formed by each limit groove 2511 is 1/4 of an arc and is uniformly distributed along the central axis of the first rotating shaft 221. Of course, this embodiment only enumerates one way of implementing the rotation of the first rotating assembly 220, and may also use an electric or pneumatic way to implement the rotation of the first rotating assembly 220, and may set a rotation angle according to the test requirement, which falls within the protection scope of the present application.
For a clearer description of the fixing assembly in the present embodiment, please refer to fig. 3, fig. 3 is a schematic structural diagram of the fixing assembly 210 in the present embodiment. The fixing assembly 210 includes at least two elastic pressing plates 211 and a heat dissipation power feeding assembly including a heat dissipation plate 212, a probe 213 and a fixing block 214, the heat dissipation plate 212 including a horizontal portion 2121 and a vertical portion 2122, the LED device 100 (see fig. 4) being vertically fixed to a side of the vertical portion 2122 by the elastic pressing plates 211, the probe 213 being fixed to the horizontal portion 2121 by the fixing block 214 for supplying current to the LED device 100.
Specifically, please refer to fig. 3 in conjunction with fig. 4, fig. 4 is a partial enlarged view of the portion a of fig. 3. The vertical portion 2122 is provided with a through hole 215, and the elastic pressing plate 211 includes a fixed end 2111 and a telescopic end 2112 (see fig. 3), the telescopic end 2112 and the probe 213 pass through the through hole 215, and the fixed end 2111 and the probe 213 are respectively contacted with both sides of the positive electrode pin 110 and the negative electrode pin 130 of the LED device 100. The probe 213 is connected to a power source, and a current flows through each pin of the LED device during testing, so that the light emitting surface 120 emits light.
In some embodiments, telescoping end 2112 may be connected to a spring so that the LED device may be easily fed and discharged.
When testing, the LED device can generate a large amount of heat, and if the LED device is not cooled in time, the test result and the service life of the LED device can be influenced. Therefore, with continued reference to fig. 2, in the present embodiment, the heat dissipation and power supply assembly further includes a cooling portion 230, the positioning device 200 further includes a mounting substrate 240, and the cooling portion 230 is sandwiched between the fixing assembly 210 and the mounting substrate 240. The mounting substrate 240 is connected with the adapter plate 222, thereby realizing connection and fixation of the fixing assembly 210 and the first rotating assembly 220.
Specifically, the refrigerating unit 230 includes a plurality of heat dissipating devices and a cooling system, and in this embodiment, a cooling liquid cooling method is used, and therefore, the refrigerating unit 230 is further provided with an interface 231 for cooling liquid to circulate outside.
In order to more clearly describe the structural relationship in the present embodiment, please refer to fig. 5, fig. 5 is a schematic cross-sectional structure of each element in the present embodiment. The adapter ring 223 is sleeved at one end of the first rotation shaft 221 and contacts with the side surface of the main bracket 251, and the limit bolt 224 is connected with the first rotation shaft 221 to realize the rotation connection of the main bracket 251 and the first rotation shaft 221. While one side of the adapter plate 222 is connected and fixed to the first rotation shaft 221, and the other side is connected and fixed to the mounting substrate 240, the fixing methods all use bolts, but may be integrally formed.
Further, in the fixing unit 210, the cooling unit 230 and the mounting board 240 are stacked, the cooling unit 230 includes an interface 231, a cooling plate 232 and a cooling block 233, a heat absorbing surface of the cooling plate 232 is bonded to a lower surface of the horizontal portion 2121 of the heat dissipating plate 212, and a heat dissipating surface of the cooling plate 232 is bonded to an upper surface of the cooling block 233; the cooling block 233 is internally provided with a communication groove 234, and the cooling liquid can flow through the communication groove 234 in the cooling block 233 through the interface 231, thereby achieving the effect of heat dissipation.
In some embodiments, the positioning device further includes a light shielding plate 260, the light shielding plate 260 is disposed at one end of the refrigerating part 230, and the light shielding plate 260 is flush with the surface of the upright part 2122.
In some embodiments, a temperature sensor may also be provided in the cooling plate 232 to monitor the temperature of the stationary assembly 210 in real time to adjust the circulation rate of the cooling fluid.
According to the LED device lateral fixing device, the LED device can rotate around the first rotating shaft through the fixing component, so that different light-emitting areas can be switched in the same direction by the LED device, the external detection device can better receive the spatial distribution characteristic of light emitted by the LED device, and the detection precision and efficiency are improved.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a test system according to the present application. In this embodiment, the test system includes a detection assembly 300 and a positioning device 200, where the detection assembly 300 is disposed opposite to the positioning device 200; the positioning device 200 includes a fixing assembly 210 and a first rotating assembly 220, the fixing assembly 210 for fixing the LED device; the detecting assembly 300 includes a detecting device (not shown) and a second rotating assembly 320, the detecting device is located right above the light emitting surface of the LED device, and the detecting device is used for receiving and analyzing and detecting the spectrum information of the LED device; the stationary assembly 210 is rotated in a first plane by a first rotating assembly and the detection device is rotated in a second plane by a second rotating assembly.
Since the positioning device 200 in this embodiment is the positioning device described in the foregoing embodiments, the specific structure and implementation principle thereof are not described herein in detail.
As can be seen from the above embodiments, the LED device rotates about the first rotation axis, and in this embodiment, the first rotation axis is set in the Y direction, that is, the first plane is a plane (parallel to the X-Y plane) that the LED device rotates out and is perpendicular to the first rotation axis (that is, the Y direction); and the direction of the motor shaft in the second rotating assembly 320 is the X direction, that is, the second plane is the plane (parallel to the Y-Z plane) from which the detecting device rotates and which is perpendicular to the motor shaft (that is, the X direction). In the X-Y-Z coordinate system, the X direction and the Y direction are perpendicular to each other, so in this embodiment, the first plane and the second plane are perpendicular to each other.
Specifically, referring to fig. 7, fig. 7 is a schematic structural diagram of the detecting component in the present embodiment. The detecting assembly 300 includes a detecting device (not shown), a second rotating assembly 310, a supporting bar 320, and a second support 350, wherein the second support 350 includes a vertical frame 352, a horizontal frame 351 erected between the vertical frames 352, and a base plate 353 fixedly installed with a work platform (not shown), the second rotating assembly 310 being fixedly provided at one side of the horizontal frame 351; the supporting rod 320 includes a connection block 323 connected with the second rotating assembly 310, a first connection rod 321 and a second connection rod 322 which are vertically arranged, the first connection rod 321 is used for fixing the detection device, and the second connection rod 322 is connected with the second rotating assembly through the connection block 323.
In some embodiments, the detection device may be a Photodiode Detector (PD), and of course, other devices for photoelectric detection may be used in the detection assembly of the present application.
Further, please refer to fig. 7 in conjunction with fig. 8, fig. 8 is a partial enlarged view of the frame B in fig. 7. The second rotating assembly 310 comprises a driving motor 311 and a motor shaft 312 connected with the driving motor 311, and the motor shaft 313 is fixedly connected with the connecting block 323, so that the second rotating assembly 310 drives the detecting device to rotate in a second plane.
In some embodiments, a displacement sensor 340 is further fixed on the horizontal frame 351, a sensing piece 342 is further provided on the connection block, and the displacement sensor 340 is provided with a notch 341, so that the sensing piece 342 can pass through the notch 341 when rotating along with the second rotating assembly 310, and the displacement sensor 340 receives a signal that the sensing piece 342 passes through the notch 341.
It should be noted that, in the present embodiment, the number of the displacement sensors 340 is 2, and the displacement sensors are circumferentially arranged along the second rotating assembly 310, so as to control the detecting device to start recording the spectrum information of the LED device after rotating by a preset angle, and stop recording the spectrum information of the LED device after exceeding the preset angle.
For example, the detection device starts recording the spectral information when the sensor piece 342 passes the first displacement sensor 341, and stops recording the spectral information when the sensor piece 342 passes the second displacement sensor 341. The deflection angle of the second rotating component 310 between the two displacement sensors 340 is a preset angle, which can be adjusted according to the requirement in the testing process.
The following specifically describes the operation principle of the test system in the present embodiment.
In the test system, the LED device is fixed on the side surface of the heat radiation plate, the light-emitting surface of the LED device is not horizontally placed but vertically placed, and the vertex of the light-emitting surface of the LED device is coincident with the Z axis. A detection device, such as a photodiode detector (abbreviated as PD), is disposed above the fixed assembly in the positioning device by a first connecting rod 321 and coincides with the central axis of the light emitting surface of the LED device. Since the LED device is vertically and laterally arranged, the detection device is actually located at the edge of the light emitting surface of the LED device.
At this time, if the detection device is fixed and the LED device rotates, the detection device can receive the spectrum information emitted by different edge areas (namely, X-Y surfaces) of the light emitting surface of the LED device in the same direction; if the detection device rotates along with the second rotating component, the LED device is not moved, and according to the deflection angle set by the displacement sensor, for example, 180 degrees, the detection device can sequentially receive the spectrum information from the edge to the top to the edge (namely, in the Y-Z plane) of the light emitting surface of the LED device.
By combining the first rotating assembly and the second rotating assembly, the detecting device can not only receive the spectrum information of the X-Y surface in the light emitting surface at a fixed position, but also actively rotate to receive the spectrum information in the Y-Z surface in the light emitting surface, and can also compare and record the spectrum information under different rotating angles, so that the measurement of the whole light space distribution of the LED device is realized.
In summary, the present application proposes a positioning device and a testing system, in which an LED device is laterally fixed by a fixing component, and rotation on an X-Y plane is achieved by a rotating component; meanwhile, the application combines the water cooling circulation technology and the semiconductor refrigeration technology to realize high junction temperature stability in the measuring process; for the space motion measuring part, the mechanism adopts high-precision motor control to realize the light space distribution curve test of nearly 180 degrees in the X and Y directions. The LED device testing device overcomes the defects that the repeated measurement accuracy is poor, the welding time is long, the device is damaged and the like due to the inclination of the light emitting surface caused by welding when the LED device is tested at present, and has the advantages of being simple in structure, low in cost, simple to operate and the like.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (5)
1. A positioning device, the positioning device comprising:
a first support;
the first rotating assembly is fixed on the first support; and
the fixed assembly is arranged on the first rotating assembly and used for fixing the LED device;
the first rotating assembly at least comprises a first rotating shaft, and the first rotating shaft is used for driving the fixed assembly to rotate on a first plane so as to enable the LED device to switch a plurality of luminous areas;
the fixing assembly comprises a heat dissipation and power supply assembly, the heat dissipation and power supply assembly comprises a heat dissipation plate, a probe and a fixing block, and the probe is fixed with the heat dissipation plate through the fixing block; the heat dissipation plate comprises a horizontal part and a vertical part, and one end of the probe is respectively connected with two electrodes of the LED device and is used for providing current for the LED device;
the fixing assembly comprises at least two elastic pressing plates, the LED device is vertically fixed on the side face of the vertical portion through the elastic pressing plates, the probe is fixed on the horizontal portion through the fixing block, the elastic pressing plates comprise fixing ends and telescopic ends, the fixing ends and the telescopic ends are mutually perpendicular, the vertical portion is provided with a through hole, and the telescopic ends and the probe penetrate through the through hole;
the heat dissipation and power supply assembly further comprises a refrigeration part, the refrigeration part is provided with an interface for circulating cooling liquid and the outside, the refrigeration part comprises a refrigeration sheet and a cooling block, the heat absorption surface of the refrigeration sheet is attached to the lower surface of the heat dissipation plate, the heat dissipation surface of the refrigeration sheet is attached to the upper surface of the cooling block, a plurality of communication grooves are formed in the cooling block, and the cooling liquid passes through the interface and flows through the communication grooves to circulate in the cooling block;
the positioning device comprises a mounting substrate, one end of the first rotating shaft is rotationally connected with the first bracket, and the other end of the first rotating shaft is fixedly connected with the adapter plate; the fixing component is fixed with the adapter plate through the mounting substrate;
the first rotating shaft is rotationally connected with the first support through a limiting screw, a limiting groove is formed in one end, connected with the first rotating shaft, of the first support, and the limiting screw passes through the limiting groove and is connected with the first rotating shaft, so that the first rotating shaft drives the fixing assembly to rotate in a first plane.
2. The positioning device according to claim 1, wherein a through hole is formed at one end of the heat dissipation plate, the probe and the telescopic end respectively pass through the through hole, and the probe and the fixed end are respectively located at two sides of two electrodes of the LED device.
3. The testing system is used for detecting the luminous characteristics of the LED device and is characterized by comprising a detection component and a positioning device, wherein the detection component is arranged adjacent to the positioning device and comprises a detection device and a second rotating component, the detection device is used for detecting the spectrum information of the LED device in a plurality of luminous areas, and the second rotating component is used for driving the detection device to rotate on a second plane so as to acquire the light space distribution information of the LED device;
wherein the positioning device is the positioning device according to any one of claims 1 to 2.
4. The test system of claim 3, wherein the detection assembly comprises a support bar, a second mount; the second rotating assembly comprises a driving motor and a motor shaft, the second support comprises a horizontal frame, and the driving motor is fixed on the horizontal frame; the detection device is connected with the motor shaft through the support rod.
5. The test system of claim 4, wherein the detection assembly further comprises a plurality of displacement sensors and a sensing piece, the displacement sensors being notched, the sensing piece being secured to the support bar, the sensing piece following rotation of the support bar in the second plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525611.6A CN108663549B (en) | 2018-05-28 | 2018-05-28 | Positioning device and testing system |
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| CN201810525611.6A CN108663549B (en) | 2018-05-28 | 2018-05-28 | Positioning device and testing system |
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| CN108663549A CN108663549A (en) | 2018-10-16 |
| CN108663549B true CN108663549B (en) | 2024-03-26 |
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