Duplex screen backlight optical detection device

Abstract

A duplex screen backlight optical detection device belongs to the technical field of backlight detection and comprises a detection table and a baffle fixed on the top surface of the detection table, a moving assembly is fixed on the inner side wall of the baffle, a mounting frame is fixed on the moving assembly, an imaging brightness meter is fixed on the mounting frame, and a plurality of guide rods are fixed on the top surface of the detection table. The multiple guide rods are jointly in sliding connection with a carrying table assembly, two lightening assemblies are symmetrically installed on the top face of the detection table relative to the carrying table assembly, plungers are fixedly connected to the outer walls of the two sides of the moving assembly, and the movable end of each plunger is fixedly connected with the side wall of the installation frame. According to the invention, the plunger and the lightening assembly are arranged, so that the collaboration of the imaging brightness meter and the lightening assembly is enhanced, more complex time sequence control is not needed, and the conditions of missing detection and false detection caused by the fact that the backlight source is not correctly lightened when the imaging brightness meter moves to one side are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of backlight detection, and specifically to an optical detection device for a dual-screen backlight. Background Technique

[0002] A backlight is a light source behind a liquid crystal display. A dual-screen backlight refers to a design where two independent display screens share a single backlight module or two backlight modules work together, such as a foldable screen or an in-vehicle dual-screen. The lighting effect of the backlight has a direct impact on the visual effect of the liquid crystal display module. Therefore, it is necessary to detect its optical properties before leaving the factory.

[0003] After retrieval, a Chinese patent with the publication number CN210690003U: An optical performance detection device for a backlight, including a top plate, a bottom plate, and a connecting plate. The top end of the connecting plate is connected to the bottom end of the top plate, and the bottom end of the connecting plate is connected to the top end of the bottom plate. A display screen is installed on one side of the top plate, a fixing frame is fixed at the bottom end of the top plate, a brightness detector is installed on the fixing frame, a lifting device is fixed at the top end of the bottom plate, and a backlight clamping assembly is hinged at the top end of the lifting device. The above patent realizes the detection of backlights with different sizes and types, reduces the use limitations of the detection device, has a simple operation, and improves the practicability.

[0004] However, there are still some deficiencies in the current backlight optical detection device during use. For example, in the design where two backlight modules work together, it is necessary to independently detect and co-detect the dual-screen backlight, that is, it is necessary to simultaneously light up and separately light up the two backlights. In the existing equipment, the backlight is lit by a lighting fixture, and then the brightness is detected by a brightness meter. The on-off of the lighting fixture needs to be controlled separately by multiple lighting cylinders, resulting in poor coordination during the use of the device. The entire lighting process requires the cooperation of multiple steps, which takes a lot of time for debugging and is rather cumbersome. If the backlight is not lit correctly, it will lead to misdetection and missed detection.

[0005] In view of the above problems, an optical detection device for a dual-screen backlight is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an optical detection device for a dual-screen backlight. By using this device for work, the problems in the above background are solved.

[0007] To achieve the above object, the present invention provides the following technical solution: A dual-screen backlight optical detection device, comprising a detection table and a baffle fixed on the top surface of the detection table. A moving component is fixed on the inner wall of the baffle, and an installation frame is fixed on the moving component. An imaging luminance meter is fixed on the installation frame. A plurality of guide rods are fixed on the top surface of the detection table, and a liftable stage component is slidably connected to the plurality of guide rods. Two lighting components are symmetrically installed on the top surface of the detection table with respect to the stage component, and each lighting component is slidably connected to the stage component. Plungers are fixedly connected to the outer walls on both sides of the moving component, and the movable end of each plunger is fixedly connected to the side wall of the installation frame; The lighting component includes two columns fixed on the top surface of the detection table. A connecting rod is rotatably connected to the side wall of each column. One end of each connecting rod is rotatably connected to a piston mechanism. Each piston mechanism is slidably connected to the stage component. The plunger and the piston mechanism on the same side are connected through a pipeline. The movable end of each piston mechanism is fixedly connected with a lighting connector, an exhaust mechanism is fixed on the side wall of each piston mechanism, and a one-way pipe is fixed on the bottom wall of each piston mechanism.

[0008] Further, each exhaust mechanism includes a pipe shell fixedly connected through the piston mechanism. A partition is fixedly connected inside each pipe shell. The chambers on both sides of the partition inside each pipe shell are connected through a U-shaped pipe. A plug is slidably sealed inside each pipe shell. The plug and the partition inside the same pipe shell are elastically connected through a first spring.

[0009] Further, the partition divides the pipe shell into two chambers. The plug is arranged in the chamber on the side close to the piston mechanism. A plurality of jet nozzles are fixedly connected to the end of each pipe shell away from the piston mechanism.

[0010] Further, the moving component includes a frame fixedly connected to the side wall of the baffle. A lead screw is rotatably connected to the frame. A first bevel gear is fixedly connected to the side wall of one end of the lead screw. A motor is fixedly connected to the outer wall of one side of the frame. The output shaft of the motor penetrates through the outer wall of the frame and is fixedly connected with a second bevel gear. The first bevel gear meshes with the second bevel gear. A slide is threadedly connected to the side wall of the lead screw. The two sides of the slide are slidably connected to the frame. The installation frame is fixedly connected to the slide.

[0011] Further, a groove is formed in the side wall of the inspection table. The stage assembly includes a stage body and a lifting cylinder fixedly connected inside the groove. The movable end of the lifting cylinder penetrates through the top wall of the inspection table and is fixedly connected to the bottom wall of the stage body. Extension frames are fixedly connected to both sides of the stage body. The two extension frames are slidably connected through a plurality of guide rods. The piston mechanism and the lighting connector are both slidably connected to the extension frame on the same side. A fixing mechanism is provided on the side wall of the stage body.

[0012] Further, the fixing mechanism includes two clamping jaws and two electromagnets. The two clamping jaws are both slidably connected to the side wall of the stage body. The two electromagnets are both fixedly connected to the side wall of the stage body. Each clamping jaw is elastically connected to the side wall of the stage body through a second spring. Absorbing blocks are fixedly connected to the positions of the side walls of the two clamping jaws corresponding to the electromagnets.

[0013] Further, the baffle is a box structure with an opening on one side. A telescopic light-shielding plate is fixedly installed on the opening side of the baffle. Two linkage rods are symmetrically and fixedly connected to the side wall of the telescopic light-shielding plate. A telescopic rod is rotatably connected to the side wall of each column. The telescopic rod is coaxially arranged with the connecting rod on the same side. The movable end of each telescopic rod is rotatably connected to the linkage rod on the same side.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the plunger and the lighting assembly, the present invention enhances the coordination between the imaging luminance meter and the lighting assembly, eliminating the need for complex timing control and avoiding missed inspections and false inspections caused by the backlight not being correctly lit when the imaging luminance meter moves to one side. 2. By the way of the plunger pushing out and sucking in gas from the lighting assembly, the present invention can also blow air on the surface of the dual backlight body during the detection process, increasing the cleanliness of the surface of the dual backlight body and taking away the heat generated during the detection of the dual backlight body through air flow. 3. Through the cooperation of the telescopic light-shielding plate and the lighting assembly, when the lifting cylinder pushes the stage assembly and the lighting assembly to rise, the telescopic light-shielding plate can be pulled down to block the direct external light source, avoiding interference of the external light source on the detection of the dual backlight body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention from the front view angle; Figure 2 It is a schematic diagram of the structure inside the inspection table and the baffle of the present invention; Figure 3 It is a schematic diagram of the structure of the stage assembly part of the present invention; Figure 4It is a schematic structural diagram of the lighting component part in the present invention; Figure 5 It is a cross-sectional view of the exhaust mechanism part in the present invention; Figure 6 It is a schematic structural diagram of the moving component part in the present invention; Figure 7 It is a schematic overall structural diagram of the back view of the present invention; Figure 8 It is a connection schematic diagram of the telescopic light-shielding plate, lighting component and stage component parts in the present invention.

[0016] In the figure: 1, detection table; 11, groove; 2, baffle; 3, moving component; 31, frame; 32, lead screw; 33, first bevel gear; 34, motor; 35, second bevel gear; 36, sliding table; 4, mounting bracket; 5, imaging luminance meter; 6, guide rod; 7, stage component; 71, jaw; 72, second spring; 73, electromagnet; 74, suction block; 75, extension frame; 76, stage body; 77, lifting cylinder; 8, lighting component; 81, column; 82, connecting rod; 83, piston mechanism; 84, lighting joint; 85, exhaust mechanism; 851, shell; 852, partition; 853, U-shaped tube; 854, plug; 855, first spring; 86, jet head; 87, one-way tube; 9, plunger; 10, telescopic light-shielding plate; 101, linkage rod; 20, telescopic rod; 30, dual-backlight body. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figure 1 - Figure 4As shown in the figure, a dual-screen backlight optical detection device includes a detection table 1 and a baffle 2 fixed on the top surface of the detection table 1. A moving component 3 is fixed on the inner side wall of the baffle 2. An installation frame 4 is fixed on the moving component 3. An imaging luminance meter 5 is fixed on the installation frame 4. The moving component 3 drives the imaging luminance meter 5 to move left and right to respectively detect the luminance of the individual backlights in the dual backlight body 30. A plurality of guide rods 6 are fixed on the top surface of the detection table 1. A liftable stage component 7 is slidably connected to the plurality of guide rods 6. The stage component 7 is used to place the dual backlight body 30. Two lighting components 8 are symmetrically installed on the top surface of the detection table 1 with respect to the stage component 7. The lighting components 8 are used to light the dual backlight body 30. Plungers 9 are fixedly connected to the outer walls on both sides of the moving component 3. The movable end of each plunger 9 is fixedly connected to the side wall of the installation frame 4. When the installation frame 4 drives the imaging luminance meter 5 to move, the movable end of the plunger 9 located in the moving direction of the installation frame 4 retracts, and the movable end of the plunger 9 located on the other side of the installation frame 4 extends; The lighting component 8 includes two columns 81 fixed on the top surface of the detection table 1. The two columns 81 are symmetrically arranged with respect to the stage component 7. A connecting rod 82 is rotatably connected to the side wall of each column 81. One end of each connecting rod 82 is rotatably connected to a piston mechanism 83. Each piston mechanism 83 is slidably connected to the stage component 7. The plunger 9 and the piston mechanism 83 on the same side are communicated through a pipeline. The movable end of each piston mechanism 83 is fixedly connected with a lighting connector 84. The lighting connector 84 is connected to an external power supply through a wire. An exhaust mechanism 85 is fixed on the side wall of each piston mechanism 83 for discharging excessive pressure inside the piston mechanism 83. The bottom wall of each piston mechanism 83 is fixedly connected with a one-way pipe 87. The one-way pipe 87 is controlled to open and close through a one-way valve. When opened, it only allows external gas to enter the inside of the piston mechanism 83, which is a prior art.

[0019] A groove 11 is formed on the side wall of the detection table 1. The stage component 7 includes a stage main body 76 and a lifting cylinder 77 fixed inside the groove 11. The movable end of the lifting cylinder 77 penetrates through the top wall of the detection table 1 and is fixedly connected to the bottom wall of the stage main body 76. The lifting cylinder 77 is used to control the lifting of the stage main body 76. Extension frames 75 are fixedly connected to both sides of the stage main body 76. The two extension frames 75 are slidably connected through the plurality of guide rods 6. The piston mechanism 83 and the lighting connector 84 are both slidably connected to the extension frame 75 on the same side. A fixing mechanism is provided on the side wall of the stage main body 76.

[0020] The fixing mechanism includes two clamping jaws 71 and two electromagnets 73. Both of the two clamping jaws 71 are slidably connected to the side wall of the stage body 76. Both of the two electromagnets 73 are fixedly connected to the side wall of the stage body 76. Each clamping jaw 71 is elastically connected to the side wall of the stage body 76 through a second spring 72. Absorbing blocks 74 are fixedly connected to the side walls of the two clamping jaws 71 at positions corresponding to the electromagnets 73. After the electromagnets 73 are energized, they attract the absorbing blocks 74. After the electromagnets 73 are de-energized, the second spring 72 pushes the clamping jaws 71 to reset by its elastic force. Extension frames 75 are fixedly connected to both sides of the stage body 76. The piston mechanism 83 and the lighting connector 84 are both slidably connected to the extension frame 75 on the same side as them. The dual-backlight source body 30 is fixed on the stage body 76.

[0021] Specifically, when detecting the dual-backlight source body 30, place it on the stage body 76, then energize the electromagnets 73 to make them generate magnetism and attract the absorbing blocks 74. The absorbing blocks 74 drive the clamping jaws 71 to move towards the direction close to the stage body 76, and finally clamp and fix the dual-backlight source body 30. After the dual-backlight source body 30 is fixed, start the lifting cylinder 77 to push the stage body 76 to rise. The stage body 76 drives the piston mechanism 83 and the lighting connector 84 to rise synchronously. Since both the piston mechanism 83 and the lighting connector 84 are slidably connected to the extension frames 75 on both sides of the stage body 76, and the length of the connecting rod 82 remains unchanged during the rising process, the connecting rod 82 will push the piston mechanism 83 towards the side of the stage body 76 during the rotation process. The two piston mechanisms 83 and the lighting connectors 84 connected to their movable ends slide along the extension frames 75, and finally are inserted into the pins on both sides of the dual-backlight source body 30, so as to achieve the effect that when the stage assembly 7 rises, the two lighting assemblies 8 approach the stage assembly 7 to light the two backlights of the dual-backlight source body 30 simultaneously, and when the stage assembly 7 descends, the two backlights of the dual-backlight source body 30 are extinguished simultaneously.

[0022] Further, when the stage assembly 7 is in the raised state and the two backlights of the dual backlight body 30 are in the lit state, when the imaging luminance meter 5 moves to the left, the gas in the left plunger 9 of the mounting bracket 4 is pressed into the interior of the piston mechanism 83 on the left side of the stage assembly 7. At this time, since the left lighting connector 84 is connected to the backlight pin and cannot be pushed to the right, the backlight on the left side of the dual backlight body 30 remains unchanged and keeps the lit state. The increased pressure is discharged through the exhaust mechanism 85 on the piston mechanism 83, thus not hindering the leftward movement of the imaging luminance meter 5. When the imaging luminance meter 5 moves to the left, the plunger 9 on the right side of the mounting bracket 4 sucks the gas from the interior of the piston mechanism 83 on the right side of the stage assembly 7. The interior of the piston mechanism 83 on the right side of the stage assembly 7 is in a negative pressure state, and the lighting connector 84 connected thereto is sucked back to the right, and the lighting connector 84 is disengaged from the right pin of the dual backlight body 30, thereby turning off the backlight on the right side of the dual backlight body 30. When the imaging luminance meter 5 moves to the right, the situation is opposite to the above, so that the dual backlight body 30 can be individually detected. When the imaging luminance meter 5 is centered, the backlights on both sides of the dual backlight body 30 return to the state of being lit simultaneously, and the cooperative detection of the two backlights is performed. Compared with the prior art in which multiple lighting cylinders are used to individually light the backlights, the cooperation between the imaging luminance meter 5 and the lighting assembly 8 is enhanced, and relatively complex timing control is not required, avoiding the situation of missed detection and false detection caused by the backlight not being correctly lit when the imaging luminance meter 5 moves to one side.

[0023] As Figure 4 - Figure 7 shown, each exhaust mechanism 85 includes a tube shell 851 fixedly connected through the piston mechanism 83. A partition plate 852 is fixedly connected inside each tube shell 851. The chambers on both sides of the partition plate 852 inside each tube shell 851 are communicated through a U-shaped tube 853. A plug 854 is hermetically and slidably connected inside each tube shell 851. The plug 854 and the partition plate 852 inside the same tube shell 851 are elastically connected through a first spring 855. The plug 854 is used to block the interface of the U-shaped tube 853 on its side. When the pressure inside the piston mechanism 83 is too high, the plug 854 moves towards the direction close to the partition plate 852 until the blockage of the interface of the U-shaped tube 853 is released. At this time, the gas inside the piston mechanism 83 is discharged through the U-shaped tube 853, so that the pressure inside the piston mechanism 83 is balanced.

[0024] The partition plate 852 divides the tube shell 851 into two chambers. The plug 854 is arranged in the chamber on the side close to the piston mechanism 83. A plurality of jet heads 86 are fixedly connected to one end of each tube shell 851 away from the piston mechanism 83, so that the gas discharged from the side wall of the piston mechanism 83 can form an air flow and be ejected from the plurality of jet heads 86, blowing the surface of the adjacent backlight to make its surface cleaner and reducing impurity interference.

[0025] The moving component 3 includes a frame 31 fixedly connected to the side wall of the baffle 2. A lead screw 32 is rotatably connected to the upper part of the frame 31. One end side wall of the lead screw 32 is fixedly connected with a first bevel gear 33. A motor 34 is fixedly connected to the outer wall of one side of the frame 31. The output shaft of the motor 34 penetrates through the outer wall of the frame 31 and is fixedly connected with a second bevel gear 35. The first bevel gear 33 meshes with the second bevel gear 35. A sliding table 36 is threadedly connected to the side wall of the lead screw 32. Both sides of the sliding table 36 are slidably connected to the frame 31. The mounting bracket 4 is fixedly connected to the sliding table 36.

[0026] Specifically, when the height of the stage component 7 is kept unchanged and the dual-sided backlight body 30 is detected separately, the motor 34 drives the lead screw 32 to rotate. By the forward and reverse rotation of the motor 34, the sliding table 36 drives the mounting bracket 4 and the imaging luminance meter 5 to reciprocate. When the imaging luminance meter 5 moves to one side, the movable end of the plunger 9 on the moving direction side retracts. When the movable end of the plunger 9 retracts, the gas in the rodless cavity inside the plunger 9 is pushed through the pipeline into the inside of the piston mechanism 83 connected to it. The air pressure inside the piston mechanism 83 increases. At this time, since the lighting connector 84 connected to the movable end of the piston mechanism 83 has been inserted into the pin of the dual-sided backlight body 30, the increased gas inside the piston mechanism 83 cannot push the movable end of the piston mechanism 83 outward. Instead, the increased gas inside the piston mechanism 83 turns to push the plug 854 inside the shell 851, causing the plug 854 to move and release the blockage of one end of the U-shaped tube 853. The U-shaped tube 853 connects the two chambers separated by the partition 852 inside the shell 851, so that the gas inside the piston mechanism 83 can be discharged, achieving the effect of balancing the air pressure. At the same time, when the discharged gas passes through the multiple jet nozzles 86, it can also blow air on the surface of the dual-sided backlight body 30, increasing the cleanliness of the surface of the dual-sided backlight body 30. After the increased gas is discharged, the first spring 855 pushes the plug 854 to reset and block the end of the U-shaped tube 853 close to the piston mechanism 83 again.

[0027] Furthermore, when the imaging luminance meter 5 moves to one side, the movable end of the plunger 9 on the side opposite to its moving direction extends. When the movable end of the plunger 9 extends, the gas inside the piston mechanism 83 connected to the plunger 9 is drawn into the rodless cavity of the plunger 9. At this time, due to the negative pressure generated inside the piston mechanism 83, the movable end of the piston mechanism 83 drives the lighting connector 84 to retract, and the lighting connector 84 is separated from the pin of the dual-sided backlight body 30, and the corresponding backlight is extinguished. When the movable end of the piston mechanism 83 drives the lighting connector 84 to retract to the maximum stroke, the one-way tube 87 at the bottom of the piston mechanism 83 opens. At this time, the extension of the movable end of the plunger 9 will no longer drive the lighting connector 84 to move, but draw gas from the outside into the inside of the piston mechanism 83 through the one-way tube 87 to supplement the gas and balance the pressure.

[0028] As Figure 1 andFigure 8 As shown, the baffle 2 is a box structure with an opening on one side. A telescopic light-shielding plate 10 is fixedly installed on the opening side of the baffle 2 to prevent direct sunlight from shining on the dual-backlight source body 30 during detection. Two linkage rods 101 are symmetrically and fixedly connected to the side wall of the telescopic light-shielding plate 10. The linkage rods 101 are L-shaped. A telescopic rod 20 is rotatably connected to the side wall of each column 81. The telescopic rod 20 is coaxially arranged with the same-side connecting rod 82. The movable end of each telescopic rod 20 is rotatably connected to the same-side linkage rod 101.

[0029] Specifically, when the lifting cylinder 77 pushes the stage assembly 7 and the lighting assembly 8 to rise, since the telescopic rod 20 is coaxially arranged with the same-side connecting rod 82, when the connecting rod 82 rotates around its axis on the column 81, it will also drive the telescopic rod 20 to rotate synchronously. The telescopic rod 20 rotates and drives the linkage rod 101 rotatably connected to one end thereof to move downward. During this process, the telescopic rod 20 can adapt to the change in the distance between its two connecting points through telescoping, so as to be able to pull down the telescopic light-shielding plate 10 to block the directly shining external light source and avoid interference from the external light source to the detection of the dual-backlight source body 30.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-screen backlight optical detection device, comprising a detection platform (1) and a baffle (2) fixed on the top surface of the detection platform (1), characterized in that: A moving component (3) is fixed on the inner wall of the baffle (2), a mounting frame (4) is fixed on the moving component (3), an imaging luminance meter (5) is fixed on the mounting frame (4), a plurality of guide rods (6) are fixed on the top surface of the detection platform (1), a liftable platform component (7) is slidably connected to the plurality of guide rods (6), two lighting components (8) are symmetrically mounted on the top surface of the detection platform (1) with respect to the platform component (7), each of the lighting components (8) is slidably connected to the platform component (7), and plungers (9) are fixedly connected to the outer walls on both sides of the moving component (3), and the movable end of each plunger (9) is fixedly connected to the side wall of the mounting frame (4); The lighting assembly (8) comprises two columns (81) fixed on the top surface of the detection platform (1); the side wall of each column (81) is rotatably connected to a connecting rod (82); one end of each connecting rod (82) is rotatably connected to a piston mechanism (83); each piston mechanism (83) is slidably connected to the carrier assembly (7); the plunger (9) and the piston mechanism (83) on the same side are connected through a pipeline; a lighting joint (84) is fixed to the movable end of each piston mechanism (83); an exhaust mechanism (85) is fixed to the side wall of each piston mechanism (83); and a one-way pipe (87) is fixed to the bottom wall of each piston mechanism (83).

2. The dual-screen backlight optical detection device according to claim 1, characterized in that: Each of the exhaust mechanisms (85) comprises a tube shell (851) that is fixedly connected to the piston mechanism (83); a partition (852) is fixedly connected inside each of the tube shells (851); chambers located on both sides of the partition (852) inside each of the tube shells (851) are connected via a U-shaped tube (853); a sealing plug (854) is sealingly and slidably connected inside each of the tube shells (851); and the sealing plug (854) and the partition (852) inside the same tube shell (851) are elastically connected via a first spring (855).

3. The dual-screen backlight optical detection device according to claim 2, characterized in that: The partition (852) divides the tube shell (851) into two chambers. The sealing plug (854) is arranged in a chamber on one side close to the piston mechanism (83). One end of each tube shell (851) away from the piston mechanism (83) is fixedly connected to a plurality of spray heads (86).

4. The dual-screen backlight optical detection device according to claim 1, characterized in that: The moving assembly (3) comprises a frame (31) fixedly connected to the side wall of the baffle (2); a screw rod (32) is rotatably connected to the upper portion of the frame (31); a first bevel gear (33) is fixedly connected to the side wall of one end of the screw rod (32); a motor (34) is fixedly connected to the outer wall of one side of the frame (31); an output shaft of the motor (34) passes through the outer wall of the frame (31) and is fixedly connected to the second bevel gear (35); the first bevel gear (33) is meshed with the second bevel gear (35); a slide (36) is threadedly connected to the side wall of the screw rod (32); two sides of the slide (36) are slidably connected to the frame (31); and the mounting frame (4) is fixedly connected to the slide (36).

5. The dual-screen backlight optical detection device according to claim 1, characterized in that: The side wall of the detection platform (1) is provided with a groove (11), and the platform assembly (7) comprises a platform body (76) and a lifting cylinder (77) fixedly connected to the inside of the groove (11); the movable end of the lifting cylinder (77) passes through the top wall of the detection platform (1) and is fixedly connected to the bottom wall of the platform body (76); both sides of the platform body (76) are fixedly connected with extension frames (75); the two extension frames (75) are slidably connected to a plurality of guide rods (6); the piston mechanism (83) and the lighting joint (84) are slidably connected to the extension frames (75) on the same side thereof; and a fixing mechanism is provided on the side wall of the platform body (76).

6. The dual-screen backlight optical detection device according to claim 5, characterized in that: The fixing mechanism comprises two clamping jaws (71) and two electromagnets (73); the two clamping jaws (71) are slidably connected to the side walls of the platform body (76); the two electromagnets (73) are fixedly connected to the side walls of the platform body (76); each of the clamping jaws (71) is elastically connected to the side walls of the platform body (76) via a second spring (72); and suction blocks (74) are fixedly connected to the side walls of the two clamping jaws (71) at positions corresponding to the electromagnets (73).

7. The dual-screen backlight optical detection device according to claim 1, characterized in that: The baffle (2) is a box structure with an opening on one side, a telescopic shading plate (10) is fixedly mounted on the open side of the baffle (2), two linkage rods (101) are symmetrically fixedly connected to the side wall of the telescopic shading plate (10), a telescopic rod (20) is rotatably connected to the side wall of each of the uprights (81), the telescopic rod (20) is coaxially arranged with the linkage rod (82) on the same side, and the movable end of each of the telescopic rods (20) is rotatably connected to the linkage rod (101) on the same side.

Images