CN107132674B - LED display module detection and correction equipment - Google Patents
LED display module detection and correction equipment Download PDFInfo
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- CN107132674B CN107132674B CN201610111416.XA CN201610111416A CN107132674B CN 107132674 B CN107132674 B CN 107132674B CN 201610111416 A CN201610111416 A CN 201610111416A CN 107132674 B CN107132674 B CN 107132674B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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Abstract
The invention relates to LED display module detection and correction equipment, which comprises an equipment operation machine, an image acquisition device and an optical cavity. The equipment operation board includes transfer rail, slide and tool platform, and transfer rail has the position of examining, and slide slidable mounting is on transfer rail, and tool platform is used for bearing LED display module and fixed mounting on the slide. The optical cavity is provided with a light inlet part, a reflecting mirror group and a light outlet part, the light inlet part is arranged at the bottom of the optical cavity and right above the detection position, and the reflecting mirror group is arranged in the optical cavity and is used for reflecting image light rays which reach the detection position and are emitted by the LED display module borne by the jig platform after entering the optical cavity from the light inlet part to form emergent image light rays which are transmitted to the light outlet part. The image acquisition device is arranged adjacent to the light emitting part and is used for acquiring emergent image light for detection and correction of the LED display module. Therefore, the invention can realize automatic detection and correction of the LED display module and greatly improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of LED detection and correction, in particular to detection and correction of an LED display module.
Background
The lighting color correction system collects the lighting color of each LED lamp point on an LED display screen or an LED display module such as an LED box or an LED lamp panel through a camera, obtains correction coefficients of each LED lamp point on the LED display screen or the LED display module through analysis of correction software, and then applies the correction coefficients to the LED display screen or the LED display module through a control system to realize coefficient adjustment of each LED lamp point so as to realize the high consistency of the lighting color among the LED lamp points.
The brightness difference detection process of the LED display module comprises the following steps: measuring a certain local area of the LED display module through a spectrometer to obtain an absolute brightness value of the measured area, and obtaining a relative difference value between the measured area and an unmeasured area of the LED display module through camera shooting, so as to convert the absolute brightness value of the whole LED display module; therefore, whether the LED display module meets the brightness and color requirements can be judged according to the error range which is set in advance.
In the prior art, the point-by-point brightness correction is carried out in a factory in a darkroom by manually carrying an LED display screen or an LED display module to a tooling table for fixing, wherein a camera frame is arranged at the far end of the same straight line with the LED display screen or the LED display module, and the point-by-point correction is completed by taking a picture of the camera; the fault detection of the LED display module is finished by manual detection through naked eyes on a production line.
However, in the prior art, synchronous automatic operation cannot be realized by detecting the LED display module and correcting the lighting color degree one by one, a carrying process is arranged between the two processes, and the efficiency is not high enough; moreover, it is difficult to detect an LED display module in the pipeline that does not meet the range of brightness errors by means of the naked eye.
Disclosure of Invention
Therefore, in order to overcome the defects and shortcomings in the prior art, the invention provides an LED display module detection and correction device.
Specifically, an LED display module detection and correction device according to an embodiment of the present invention includes: the device comprises a device running machine table, an image acquisition device and an optical cavity. The equipment operation board includes transfer rail, slide and tool platform, the transfer rail has the position of examining, slide slidable mounting is in on the transfer rail, the tool platform is used for bearing LED display module and fixed mounting on the slide, thereby with the slide can be in synchronous slip or stop on the transfer rail. The optical cavity is arranged above the equipment operation machine table and is provided with a light inlet part, a reflecting mirror group and a light outlet part, the light inlet part is positioned at the bottom of the optical cavity and is positioned right above the detection position, the reflecting mirror group is arranged in the optical cavity and is used for reflecting image light rays which reach the detection position and are emitted by the LED display module borne by the jig platform after entering the optical cavity from the light inlet part to form emergent image light rays which are transmitted to the light outlet part. The image acquisition device is arranged adjacent to the light emitting part and is used for acquiring the emergent image light for detection and correction of the LED display module.
In one embodiment of the present invention, the image capturing device includes a camera and a spectrometer, and the camera and the spectrometer share the same reflecting mirror group to reflect the outgoing image light.
In one embodiment of the present invention, the mirror group includes a first mirror, a second mirror, and a third mirror, the first mirror is located at a first end of the optical cavity where the light incident portion is located, the second and third mirrors are located at a second end of the optical cavity where the light incident portion is located, the second mirror is located opposite to the first mirror and is located side by side to the third mirror, and the image capturing device is located opposite to the third mirror and is located adjacent to the first end of the optical cavity and is located away from the second end.
In one embodiment of the invention, the LED display module detection and correction device further includes a retractable light shield fixedly connected to the optical cavity and located below the light entrance portion.
In one embodiment of the invention, the conveying track is an annular track, a plurality of sliding seats are slidably arranged on the conveying track and are respectively used for fixedly arranging a plurality of jig platforms, and the equipment operation machine table further comprises a conveying power device which is used for driving the sliding seats to circularly slide or stop on the conveying track.
In one embodiment of the invention, the annular track further has a feed/discharge level and a correction factor upload and write level between the detection level and the feed/discharge level.
In one embodiment of the invention, the transmission power device comprises an annular synchronous belt or synchronous chain, and the plurality of sliding seats are fixedly connected with the synchronous belt or the synchronous chain so as to synchronously and circularly slide or stop on the transmission track.
In one embodiment of the invention, the equipment operation machine table further comprises an annular energizing track, and the jig platform is provided with a brush, and the brush is in sliding contact with the energizing track.
In one embodiment of the present invention, the equipment operation machine further includes a secondary positioning device, where the secondary positioning device includes a limiting device capable of moving up and down and is disposed at the detecting position and the feeding/discharging position, and is used for blocking a sliding seat reaching the detecting position and the feeding/discharging position, respectively, so as to achieve positioning.
In one embodiment of the invention, the LED display module detection and correction device further comprises a constant temperature device arranged in the installation space of the device operation machine.
From the above, the embodiment of the invention can realize full-automatic detection and correction of the LED display module, and greatly improve the production efficiency.
Other aspects and features of the present invention will become apparent from the following detailed description, which refers to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.
Drawings
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
Fig. 1 is a schematic diagram of an overall structure of an LED display module detection and correction device according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a device operation platform in the LED display module detection and correction device shown in fig. 1.
Fig. 3 is a schematic diagram of a relative positional relationship between the jig platform and the power-on track shown in fig. 2.
Fig. 4 is a schematic diagram illustrating a relative positional relationship between the LED display module mounted on the jig platform shown in fig. 2 and the retractable light shield shown in fig. 1 when the LED display module is in a detection position.
Fig. 5 is a schematic top view illustrating a structure of an apparatus operation platform according to still another embodiment of the present invention.
Fig. 6 is a schematic top view illustrating a structure of an apparatus operation platform according to another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings.
Referring to fig. 1 to 4, an LED display module detection and correction device 10 according to an embodiment of the present invention includes an optical cavity 11, an image capturing device 13, and a device operation platform 15, and preferably further includes a retractable light shield 17. The structure of the equipment operation machine 15 of the present embodiment is shown in fig. 2, which is installed in the internal space 100 of the LED display module detection and correction equipment 10 shown in fig. 1, so that the optical cavity 11 is located above the equipment operation machine 15.
As shown in fig. 1, the optical cavity 11 is provided with a light entrance portion 110, a plurality of reflecting mirrors 111,113,115, and a light exit portion. The light inlet part 110 is positioned at the top of the optical cavity 11, and the light outlet part is positioned at the side part of the optical cavity 11; the mirror 111 is located at one end of the optical cavity 11 where the light entrance portion 110 is located, and the mirrors 113 and 115 are located at one end of the optical cavity 11 far from the light entrance portion 110, the mirror 113 being disposed opposite to the mirror 111 in the horizontal direction and being disposed adjacent to the mirror 115 in the left-right direction. The incident image light entering from the light-in portion 110 along the vertical direction (emitted by the LED display module to be tested at the test position) is reflected by the mirror 111, then is converted into horizontal outgoing to the mirror 113, then is reflected horizontally by the mirror 113 to the mirror 115, and finally is reflected horizontally by the mirror 115 to the light-out portion of the optical cavity 11 to form outgoing image light, and the incident angle of the light of each of the mirrors 111,113 and 115 is typically 45 degrees. In addition, it should be noted that the mirror group formed by the mirrors 111,113 and 115 is merely an example of the mirror group in the optical cavity 11 of the present embodiment, and any mirror group capable of converting the vertically incident image light into the horizontally transmitted and outgoing image light can be applied to the optical cavity 11 of the present embodiment.
The image pickup device 13 is disposed adjacent to the light-emitting portion of the optical cavity 11 to collect outgoing image light reaching the light-emitting portion of the optical cavity 11. Preferably, the image acquisition device 13 comprises a camera and a spectrometer, so that both share outgoing image light rays formed by reflection by the mirror group of mirrors 111,113 and 115. For a red, green and blue full-color LED display module, the camera is used for collecting red full-bright images, green full-bright images and blue full-bright images of the LED display module and calculating correction coefficients, and even collecting white line images (such as white oblique line images, white vertical line images and/or white horizontal line images) for detecting whether the LED lamp points in the LED display module are broken, short-circuited and other phenomena, which cause problems such as broken points, bright spots and the like, and the camera can be a Bayer filter industrial camera, an XYZ filter industrial camera and the like; the spectrometer is used for collecting absolute brightness and chroma of the LED display modules so as to realize absolute brightness and chroma difference detection among the LED display modules, and can be CS2000 of America, ocean optics QE65000 and the like.
The retractable light shield 17 is fixedly connected to the optical cavity 11 and located below the light incident portion 110, and can be repeatedly retracted upwards or downwards along a vertical direction by a power device (not depicted in the figure), so that a local darkroom environment can be formed below the light incident portion 110 of the optical cavity 11 to cover the LED display module 20 (as shown in fig. 4) to be tested, and light leakage during image acquisition of the LED display module to be tested is prevented. Preferably, a light-transmitting glass is provided at the top end of the retractable light-shielding cover 17, i.e., the end adjacent to the light-entering portion 110 of the optical cavity 11, for isolating dust between the outside and the light path and ensuring good light-transmitting performance.
As shown in fig. 2, the equipment operation machine 15 includes a transfer rail 151, a slider 153, a transfer power device 155, a jig platform 157, and an energizing rail 158, and preferably further includes a secondary positioning device 159.
The conveying track 151 is an annular track, and includes, for example, two parallel straight line segments and an arc segment connected between the two straight line segments and located at two ends of the straight line segments; one of the arc sections is provided with a feed/discharge level and the other arc section is provided with a detection level. It will be appreciated that the actual position of the feed/discharge level may vary, without limiting the location in the arc section, due to the fact that the number of stations after the test bit and before the feed/discharge level may meet the time requirements for data uploading and writing.
The slider 153 is slidably mounted on the transfer rail 151 so that the slider 153 can be cyclically slid or stopped along the transfer rail 151 by the drive of the transfer power device 155. The sliding bases 153 are installed on the conveying rail 151 at preset intervals, and 10 sliding bases 153 are shown in fig. 2, but the invention is not limited thereto, and the number thereof can be determined according to practical application requirements; even, only one slider 153 may be provided without considering production efficiency.
The transfer power device 155 supplies power to the carriages 151 slidably mounted on the discharge transfer rail 151 to drive each of the carriages 151 to synchronously cycle sliding or stopping along the transfer rail 151. Specifically, the transmission power device 155 includes a power source such as a motor and an endless timing belt or chain, and each of the carriages 151 slidably mounted on the transmission rail 151 is fixedly connected to the timing belt or chain so as to be capable of sliding with the movement of the timing belt or chain; the synchronous belt or the synchronous chain is driven by a power source.
The jig platform 157 is mounted and fixed on the slide 153, so as to be driven by the slide 153 to circularly slide or stop along the conveying rail 151. In this embodiment, the slider 153 and the jig platform 157 fixedly mounted thereon form a carrier for the LED display module, which is integrally slidably mounted on the conveying rail 151, so as to be capable of carrying the LED display module to slide or stop on the conveying rail 151. Only one jig platform 157 is shown in fig. 2 as an example mounted on the slide bases 153, and one jig platform 157 is mounted on each slide base 153 during actual operation of the apparatus 10. The jig platform 157 is mainly used for fixing and installing the LED display modules, and different sizes of jig platforms are designed according to different specifications of the LED display modules. The jig platform 157 needs to ensure that the LED display module can be accurately and completely fixed and that the assembly and disassembly are convenient. Specifically, in fig. 2, the top surface of the jig platform 157 is provided with two positioning bars 1571 located on two adjacent sides and two elastic clamping mechanisms 1573 located on two other adjacent sides, and the positioning bars 1571 and the elastic clamping mechanisms 1573 cooperate to fix the LED display module 20 (see fig. 4). Further, as shown in fig. 3, a sliding contact such as a brush 1575 is provided on the bottom surface of the jig platform 157, so that the jig platform 157 may form an electrical connection with the inside of the energizing rail 158 by the sliding contact of the brush 1575 to supply power to the LED display module 20 fixed thereon for image display. It will be appreciated that the front end of the LED display module 20 is typically connected to a control card, so as to control the LED display module 20 to display images and write LED lamp correction coefficients, such as brightness correction coefficients or brightness correction coefficients, to the LED display module 20 during the process of detecting and correcting the LED display module 20; and the control card is typically also secured to the jig platform 157 and draws power, such as 5V dc power, through brushes 1575.
The energizing track 158 is located at the periphery of the transfer track 151, which is an endless track and typically includes two parallel straight segments and two circular segments connected between and located at the ends of the straight segments. The energized track 158 provides 5V dc power to the jig platform 157, for example, during operation of the apparatus. Furthermore, as will be appreciated by those skilled in the art, with the continued development and application of wireless power, such as electromagnetic resonant wireless power technology, the energizing track 158 may be omitted and wireless power may be provided to the jig platform 157 instead, such as providing a wireless power receiving coil on the jig platform 157 to receive wireless power.
The secondary positioning device 159 is disposed, for example, on the outer side of the conveying rail 151, and specifically, between the conveying rail 151 and the energizing rail 158. Here, the secondary positioning device 159 includes a limiting device such as a lift rod that can move up and down (i.e., move up and down in a direction perpendicular to the paper surface in fig. 2, which is driven by a cylinder, for example); and preferably both the detection position and the feed/discharge position are provided with secondary positioning means 159. When the sensor detects that the LED display module to be tested reaches the detection position (for example, the position of the jig platform 157 shown in fig. 2) or the feeding/discharging position (for example, the position of the rightmost seat 153 shown in fig. 2), the cylinder (not shown in fig. 2) pushes the lifting-movable limiting device to make lifting movement, so that the slide seat 153 is blocked from temporarily continuing to advance, and the motor for transmitting the power device 155 stops rotating; thus, the positioning of the slide 153 can be realized, and the accuracy of each time the slide reaches the detection position can be ensured.
In view of the foregoing, it will be appreciated that the LED display module detecting and correcting apparatus 10 of the present embodiment may be further configured with an upper computer, such as a PC (not shown in the drawings), for installing correction software, where the correction software is used to control the image capturing device 13 to capture images of LED display modules reaching the detection position, pick out LED display modules that have a failure and do not meet the brightness requirement, and complete the operations of uploading the correction coefficients of the LED lamp points to the control card and writing the correction coefficients into the LED display modules. In addition, the LED display module detecting and correcting device 10 is also configured with an independent PLC controller (not shown in the figure) to control the operation, stop, positioning, etc. related to the whole device operation machine 15. Furthermore, a thermostat (not shown in the figures) is preferably also provided in the interior space 100 shown in fig. 1 to keep the temperature inside the apparatus 10 constant, for example between plus and minus 2 degrees inside the apparatus 10.
In addition, it is understood that the retractable shade 17 may be fixed on the jig platform 157, and the corresponding power device is disposed on the jig platform 157 to implement the up-and-down repeated retractable movement of the retractable shade 17.
The operation of the LED display module detection and correction device 10 according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 4:
(a) The LED display module is put into: placing an LED display module from a feed/discharge port, wherein the LED display module is placed on a jig platform 157 positioned at the feed/discharge level, and a secondary positioning device 159 positioned at the feed/discharge level stops a slide 153 reaching the feed/discharge level at the moment, and an operator is required to press a confirmation button to release the slide 153 so as to continue advancing;
(b) And (3) detecting by an LED display module: when the LED display module is conveyed to a detection position along the conveying track 151, each sliding seat 153 arranged on the conveying track 151 stops walking (namely, the assembly line pauses working) and the secondary positioning device 159 blocks the sliding seat 153 reaching the detection position, and the telescopic light shield 17 above the detection position stretches downwards to cover the LED display module to form a local darkroom environment, so that the whole LED display module is prevented from being interfered by external light during image detection; the correction software sends an image acquisition instruction to an image acquisition device 13 (comprising a camera and a spectrometer) to acquire emergent image light rays formed by reflecting image light rays sent by an LED display module at a detection position through reflectors 111,113 and 115, and provides acquisition results for the correction software to process and analyze so as to obtain correction coefficients of all LED lamp points on the LED display module and judge whether the LED display module fails or not and does not meet the brightness requirement; then, the correction software sends an instruction that the image detection is completed to the PLC controller, the retractable shade 17 is retracted upwards, the secondary positioning device 159 at the detection position releases the blocking of the sliding seat 153 at the detection position, the LED display module flows to the next station, and the previous LED display module reaches the detection position next, and the process is circulated;
(c) Data uploading and writing into the LED display module: the LED display module finishes the operation of uploading and writing the correction coefficient in the LED display module in the process of continuously and backwardly transmitting the detection bit to the material inlet/outlet position, in other words, the transmission track 151 is also provided with the correction coefficient uploading and writing bit between the detection bit and the material inlet/outlet position;
(d) And (3) taking out the LED display module: the LED display module, which has done all the operations, eventually flows to the in/out level, where the secondary positioning device 159 at the in/out level blocks the sledge 153 reaching the in/out level. If the LED display module has no problem, the LED lamp panel module can be directly taken out from the feeding/discharging position by an operator, and if the LED display module has a fault or does not meet the requirements of the brightness difference range, the equipment can give out an alarm of light and sound to prompt the operator.
In summary, the LED display module detection and correction device according to the embodiment of the present invention: i) The detection and correction data uploading and storage functions of the LED display module can be completed, for example, the detection of the LED display module and the collection of images required by correction are completed within 10 seconds, wherein the LED display module detects common faults such as dead spots, bright spots and the like, and meanwhile, the LED display module which does not meet the requirements of the brightness range can be detected and removed; ii) the calibration function of the multi-batch LED display module such as LED lamp panel can be completed, and due to the adoption of the spectrometer in the image acquisition device 13, the method is very suitable for the situation that the multi-batch LED display module needs to be calibrated to a set brightness target value, and all the calibration processes including uploading and writing the calibration coefficients into the LED display module and saving the calibration coefficients into the database are completed before the LED display module flows out. Therefore, the invention can meet the requirements of customers on full-automatic detection and correction of the LED display module, and greatly improves the production efficiency; in the long term, the automation and standardization degree of the LED display screen production can be greatly improved.
The equipment operation machine 15 of the above embodiment may be appropriately modified, for example, the embodiment shown in fig. 5 or 6. In particular, the method comprises the steps of,
the equipment operation machine 55 in fig. 5 includes a transfer rail 551, a slide 553, and a transfer power device 555. Wherein the conveying rail 551 is a circular ring-shaped rail, and a plurality of, for example, six slide carriages 553 are slidably mounted on the conveying rail 551; the transmission power device 555 is a gear motor that directly drives (the aforementioned timing belt or timing chain may be omitted in comparison with fig. 2) each slide 553 slidably mounted on the transmission rail 551 to cyclically slide or stop on the transmission rail 551. Furthermore, it will be appreciated that the jig platform for carrying the LED display modules described above may be mounted on each slide 553, thereby enabling the transfer of the LED display modules.
As described above, the equipment operation machine 65 in fig. 6 includes the conveying rail, the slider 653, the conveying power device, and the tray 657. Wherein the conveying track includes guide rails 6511 and 6513 extending in a first direction (horizontal direction in fig. 6) and arranged side by side, and guide rails 6512 and 6514 extending in a second direction (vertical direction in fig. 6) substantially perpendicular to the first direction and arranged side by side, and the planes of the guide rails 6512 and 6514 are lower than the planes of the guide rails 6511 and 6513 and are provided at left and right ends of the guide rails 6511 and 6513; the transmission power unit includes timing belts 6551, 6552, 6553, and 6554. The two trays 657 shown in fig. 6 are used to load the carriages 653, respectively, with a slide rail 6571 provided thereon for sliding the carriages 653 thereon for receiving the carriages 653 from the rails 6511 and 6513 and for feeding the carriages 653 onto the rails 6511 and 6513; furthermore, the two trays 657 can reciprocate back and forth along the guide rails 6512, 6514 under the driving action of the timing belts 6552 and 6654, respectively. A plurality of five carriages 653, for example, can be moved along the guide rails 6511 and 6513 by the drive of the timing belts 6551 and 6553, and can be loaded on the tray 657 along the guide rails 6512 and 6514 by the drive of the timing belts 6552 and 6554, so that the respective carriages 654 can form an endless movement track in the clockwise direction, that is, the guide rails 6511, 6512, 6513 and 6514 together provide an endless conveying track, and the respective carriages 653 can be slid or stopped cyclically on the endless conveying track. In addition, it is understood that the jig platform for carrying the LED display modules may be mounted on each slide 653, thereby realizing the transfer of the LED display modules.
The present invention is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. The LED display module detection and correction device is characterized by comprising a device operation machine, an image acquisition device and an optical cavity;
the equipment operation machine table comprises a conveying rail, a sliding seat and a jig platform, wherein the conveying rail is provided with a detection position, the sliding seat is slidably arranged on the conveying rail, and the jig platform is used for bearing an LED display module and is fixedly arranged on the sliding seat so as to synchronously slide or stop on the conveying rail with the sliding seat;
the optical cavity is arranged above the equipment operation machine table and is provided with a light inlet part, a reflecting mirror group and a light outlet part, the light inlet part is positioned at the bottom of the optical cavity and is positioned right above the detection position, the reflecting mirror group is arranged in the optical cavity and is used for reflecting image light rays which reach the detection position and are emitted by the LED display module borne by the jig platform from the light inlet part to the optical cavity to form emergent image light rays which are transmitted to the light outlet part; wherein the light emergent part is positioned at the side part of the optical cavity;
the image acquisition device is arranged adjacent to the light emitting part and is used for acquiring the emergent image light for detection and correction of the LED display module;
wherein, the speculum group includes: the optical cavity comprises a first reflecting mirror, a second reflecting mirror and a third reflecting mirror, wherein the first reflecting mirror is arranged at the first end of the light entering part, the second reflecting mirror and the third reflecting mirror are arranged at the second end of the optical cavity far away from the light entering part, the second reflecting mirror is arranged opposite to the first reflecting mirror and is arranged side by side left and right with the third reflecting mirror, and the image acquisition device is arranged opposite to the third reflecting mirror and is adjacent to the first end of the optical cavity and far away from the second end.
2. The LED display module detection and correction device of claim 1, wherein the image acquisition means comprises a camera and a spectrometer, and the camera and the spectrometer share the same mirror group for reflecting the formed outgoing image light.
3. The LED display module detection and correction device of claim 1, further comprising a retractable light shield fixedly connected to the optical cavity and positioned below the light entrance portion.
4. The LED display module inspection and correction device of claim 1, wherein the transfer rail is an annular rail, a plurality of the carriages are slidably mounted on the transfer rail for fixedly mounting a plurality of the jig platforms, respectively, and the device running machine further comprises a transfer power device for driving the plurality of carriages to circularly slide or stop on the transfer rail.
5. The LED display module detection and correction device of claim 4, wherein the annular track further has a feed/discharge level and a correction factor upload and write level between the detection level and the feed/discharge level.
6. The LED display module detection and correction device of claim 4, wherein the transmission power means comprises an endless timing belt or chain, and the plurality of carriages are fixedly connected to the timing belt or chain so as to be capable of synchronously and cyclically sliding or stopping on the transmission rail.
7. The LED display module detection and correction device of claim 4, wherein the device running machine further comprises an annular energizing track, the jig platform being provided with brushes in sliding contact with the energizing track.
8. The LED display module detection and correction device of claim 5, wherein the device running machine further comprises a secondary positioning device, the secondary positioning device comprises a limiting device capable of moving up and down and is arranged at the detection position and the material inlet/outlet level, and the secondary positioning device is used for blocking a sliding seat reaching the detection position and the material inlet/outlet level respectively to realize positioning.
9. The LED display module detection and correction device of claim 1, further comprising a thermostat disposed within an installation space of the device operation machine.
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| CN201610111416.XA CN107132674B (en) | 2016-02-29 | 2016-02-29 | LED display module detection and correction equipment |
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| CN201610111416.XA CN107132674B (en) | 2016-02-29 | 2016-02-29 | LED display module detection and correction equipment |
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| CN107132674B true CN107132674B (en) | 2023-10-20 |
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| CN109916638A (en) * | 2019-02-20 | 2019-06-21 | 广州汽车集团乘用车有限公司 | A kind of automatic trailing type Vehicular exhaust evacuation system |
| CN112785952B (en) * | 2020-12-29 | 2023-08-08 | 深圳鹏瑞智能科技股份有限公司 | Detection and correction device and detection and correction method for display screen with under-screen camera |
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