Device for detecting light transmission of peep-proof film

Abstract

The invention belongs to the technical field of optical detection, and discloses a peep-proof film light transmittance detection device which comprises a base, a collecting box arranged on the outer wall of the base and a detector fixedly connected to the outer wall of the base, and further comprises a feeding and discharging mechanism arranged on the outer wall of the base; the fixing mechanism is mounted on the feeding and discharging mechanism; wherein the feeding and discharging mechanism comprises a motor, an output shaft of the motor is fixedly connected with a rotating rod, a sliding groove is formed in the outer wall of the rotating rod, and a sliding rod is slidably connected to the inner wall of the sliding groove; according to the peep-proof film detection device, through cooperation of structures such as the hinge rod and the placement plate, the three feeding and discharging mechanisms can rotate on the base in turn through the motor, and the three feeding and discharging mechanisms can be in different states and correspond to feeding, detection and discharging stations, so that other peep-proof films can be subjected to feeding and discharging operation while one group of peep-proof films is detected, and the detection efficiency is improved. The overall efficiency is improved, and the working intensity of operators is reduced.

Description

Technical Field

[0001] This invention belongs to the field of optical detection technology, specifically a device for detecting the light transmittance of privacy films. Background Technology

[0002] Privacy screen protectors are functional optical films that are attached to the surface of mobile phone displays. Their core technology is to use a micro-louver optical structure or polarization technology to control the angle of light emission, so as to achieve the effect of clear visibility from the front and blurred or invisible screen content from the side, thus protecting the user's privacy from being spied on.

[0003] The privacy film transmittance testing device is a specialized testing equipment used to determine the transmittance and privacy performance of privacy films under different light source conditions. It can accurately collect the transmittance data of the privacy film at the normal viewing angle by controlling the incident light parameters, thereby judging whether the transmittance performance and privacy effect of the privacy film meet the preset standards. It is widely used in the factory quality inspection of privacy film manufacturers and the performance verification of related scientific research institutions.

[0004] Some existing privacy film testing devices require the privacy film to be placed on a testing base and aligned with the testing instrument for testing. After mass production of privacy films, multiple privacy films need to be tested in turn. In some existing technologies, the privacy film needs to be manually fixed before testing to prevent it from shifting during the testing process and affecting the testing results. After testing, it needs to be manually unfixed and removed. The operation steps are numerous, and during the testing process, it is necessary to wait for the privacy film to be removed before placing another set of privacy films for testing, which is time-consuming and has low overall efficiency. Therefore, a privacy film light transmittance testing device is proposed to address the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a device for detecting the light transmittance of privacy films.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a privacy film light transmittance detection device, comprising a base, a collection box provided on the outer wall of the base, a detector fixedly connected to the outer wall of the base, and further comprising: a loading and unloading mechanism disposed on the outer wall of the base; and a fixing mechanism installed on the loading and unloading mechanism; The loading and unloading mechanism includes a motor, the output shaft of which is fixedly connected to a rotating rod. The outer wall of the rotating rod has a groove, and the inner wall of the groove is slidably connected to a sliding rod. The outer wall of the sliding rod is fixedly connected to a connecting rod, and the outer wall of the connecting rod is fixedly connected to a fixing rod. The outer wall of the fixing rod is slidably connected to a support rod, and the outer wall of the support rod is hinged to a placement plate. The bottom outer wall of the placement plate has a guide groove, and the inner wall of the guide groove is slidably connected to a slider. The inner wall of the slider is hinged to a hinge rod, and the top outer wall of the base has a protrusion, and the inner wall of the base has a groove.

[0007] Preferably, the inner walls of the bottom ends of the hinge rod and the connecting rod are all connected to ball bearings, and the outer wall of the fixing rod is fixedly connected to a guide rod.

[0008] Preferably, the motor is fixedly connected to the inner wall of the base, and the support rod is fixedly connected to the guide rod.

[0009] Preferably, the ball bearings on the inner wall of the bottom end of the hinge rod contact the inner wall of the groove, and the ball bearings on the inner wall of the connecting rod contact the outer wall of the protrusion.

[0010] Preferably, the guide rod is slidably connected to the outer wall of the hinge rod, and the connecting rod is slidably connected to the inner wall of the placement plate.

[0011] Preferably, the fixing mechanism includes a control rod, a pressure plate is slidably connected to the outer wall of the control rod, an insert block is elastically connected to the inner wall of the pressure plate via a connecting spring, a slot is provided on the outer wall of the control rod, a movable plate is elastically connected to the inner wall of the control rod via a telescopic spring, an abutment block is fixedly connected to the outer wall of the movable plate, and a pressure rod is fixedly connected to the outer wall of the movable plate.

[0012] Preferably, the control rod is fixedly connected to the outer wall of the connecting rod, the insert is engaged with the slot, and the insert is slidably connected to the inner wall of the pressure plate.

[0013] Preferably, one end of the connecting spring is fixedly connected to the outer wall of the insert block, and the other end of the connecting spring is fixedly connected to the inner wall of the pressure plate.

[0014] Preferably, one end of the telescopic spring is fixedly connected to the outer wall of the movable plate, and the other end of the telescopic spring is fixedly connected to the inner wall of the control rod, and the movable plate is slidably connected to the inner wall of the control rod.

[0015] Preferably, the abutment block contacts the outer wall of the insertion block, the pressure rod is slidably connected to the inner wall of the control rod, and the pressure plate contacts the top outer wall of the placement plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the cooperation of structures such as hinge rods and placement plates, allows three sets of loading and unloading mechanisms to rotate on the base in turn via motors. After the ball bearings below the hinge rods and connecting rods contact the grooves and protrusions, the three sets of loading and unloading mechanisms can be in different states, corresponding to the loading, inspection, and unloading stations. Thus, while one set of privacy films is being inspected, the loading and unloading operations of other privacy films can be performed, improving overall efficiency and reducing the workload of operators. This invention utilizes a combination of a pressure plate and an insert block. The pressure plate can be lowered to fix the privacy film, while pressing the pressure rod can move the movable plate. The abutment block squeezes the insert block to disengage it from the slot, thus adjusting the position of the pressure plate. The privacy film of different lengths can be moved to the appropriate position for fixation. The operation is simple, quick, and easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded cross-sectional view of the loading / unloading mechanism and the base of the present invention. Figure 3 This is a schematic diagram of the disassembled structure of the rotating rod and sliding rod of the present invention; Figure 4 This is a schematic diagram of the guide rod, fixing rod, and placement plate structure of the present invention; Figure 5 This is a schematic diagram of the hinge rod, slider, and guide groove structure of the present invention; Figure 6 This is a cross-sectional exploded view of the pressure plate and control rod of the present invention. Figure 7 This is a schematic cross-sectional view of the pressure plate and control rod of the present invention.

[0018] In the picture: 100. Base; 200. Loading / unloading mechanism; 201. Motor; 202. Rotating rod; 203. Slide groove; 204. Slide rod; 205. Connecting rod; 206. Fixing rod; 207. Support rod; 208. Placement plate; 209. Hinge rod; 210. Ball bearing; 211. Sliding block; 212. Guide groove; 213. Groove; 214. Protrusion; 215. Guide rod; 300. Fixing mechanism; 301. Control lever; 302. Pressure plate; 303. Connecting spring; 304. Insert block; 305. Slot; 306. Moving plate; 307. Abutment block; 308. Telescopic spring; 309. Pressure rod; 400. Collection box; 500. Detector. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, the present invention provides a device for detecting the light transmittance of a privacy film, including a base 100, a collection box 400 provided on the outer wall of the base 100, a detector 500 fixedly connected to the outer wall of the base 100, and further including: a loading and unloading mechanism 200, which is disposed on the outer wall of the base 100; and a fixing mechanism 300, which is installed on the loading and unloading mechanism 200. The loading and unloading mechanism 200 includes a motor 201, with a rotating rod 202 fixedly connected to the output shaft of the motor 201. A groove 203 is provided on the outer wall of the rotating rod 202, and a sliding rod 204 is slidably connected to the inner wall of the groove 203. A connecting rod 205 is fixedly connected to the outer wall of the sliding rod 204, and a fixing rod 206 is fixedly connected to the outer wall of the connecting rod 205. A support rod 207 is slidably connected to the outer wall of the fixing rod 206, and a placement plate 208 is hinged to the outer wall of the support rod 207. A guide groove 212 is provided on the bottom outer wall of the placement plate 208, and a slider 211 is slidably connected to the inner wall of the guide groove 212. A hinge rod 209 is hinged to the inner wall of the slider 211. A protrusion 214 is fixedly connected to the top outer wall of the base 100, and a groove 213 is provided on the inner wall of the base 100.

[0021] The above solution is as follows: the base 100 supports the device; the detector 500 tests the light transmittance of the privacy film; the collection box 400 collects the privacy film after testing; and the loading and unloading mechanism 200 has three sets, corresponding to three workstations. With the loading and unloading mechanism 200 in place, during the privacy film testing process, the operator only needs to manually place the privacy film on the placement plate 208 at one workstation. Then, by rotating the three sets of loading and unloading mechanisms 200 and switching between workstations, the privacy film can be automatically fixed, tested, and collected without requiring manual operation by the operator. Fixing and removing the privacy film does not require waiting for one set of films to be fully inspected and unloaded before loading and inspecting another set. This not only improves the overall inspection efficiency but also reduces the number of steps for operators and lowers their workload. The fixing mechanism 300 can be used to press down and fix the privacy film placed on the placement plate 208 to prevent the privacy film from shifting during movement between workstations and affecting subsequent inspection results. For privacy films of different lengths, the distance between the two sets of pressure plates 302 in the fixing mechanism 300 can be adjusted to improve the adaptability of fixing the privacy film. The adjustment operation is also relatively simple.

[0022] like Figures 2 to 5 As shown, the inner walls of the bottom ends of the hinge rod 209 and the connecting rod 205 are both connected to ball bearings 210, and the outer wall of the fixing rod 206 is fixedly connected to a guide rod 215.

[0023] Using the above scheme: Motor 201 is in a fixed state. When Motor 201 starts, the output shaft drives Rotor 202 to rotate. Slide Rod 204 is slidably connected to Slide Groove 203 on the outer wall of Rotor 202, and can only move vertically. This allows Rotor 202 to drive the three sets of Slide Rods 204 on the outer wall to rotate synchronously. Since Slide Rod 204 is fixed to Connecting Rod 205, and Connecting Rod 205 is slidably connected to the inner wall of Placement Plate 208, it can only move vertically. Thus, Slide Rod 204 can drive Placement Plate 208 to rotate synchronously. By starting and stopping Motor 201, Placement Plate 208 can be rotated to the position corresponding to Detector 500 for detection and loading / unloading. Connecting Rod 205 can control the overall vertical movement of Fixing Mechanism 300, which can automatically press down and fix the privacy film. When the fixed position is released, the rotating rod 202 drives the three sets of placement plates 208 to rotate continuously, so that the three sets of loading and unloading mechanisms 200 can be in different states on the base 100. During the switching of work positions, the ball bearings 210 will contact the outer wall of the base 100, the ball bearings 210 in the inner wall of the hinge rod 209 will contact the inner wall of the groove 213, causing the hinge rod 209 to move downward, while the ball bearings 210 in the inner wall of the fixed rod 206 will contact the protrusion 214, causing the fixed rod 206 to move upward. The inner wall of the bottom end of the support rod 207 is also provided with ball bearings 210. This set of ball bearings 210 will only contact the outer wall of the base 100. The ball bearings 210 can reduce the friction between the loading and unloading mechanism 200 and the base 100 when the loading and unloading mechanism 200 moves, so as to make the movement smoother and reduce wear.

[0024] like Figures 2 to 5 As shown, the motor 201 is fixedly connected to the inner wall of the base 100, and the support rod 207 is fixedly connected to the guide rod 215; the ball 210 on the inner wall of the bottom end of the hinge rod 209 contacts the inner wall of the groove 213, and the ball 210 on the inner wall of the connecting rod 205 contacts the outer wall of the protrusion 214; the guide rod 215 is slidably connected to the outer wall of the hinge rod 209, and the connecting rod 205 is slidably connected to the inner wall of the placement plate 208.

[0025] Using the above scheme: When the loading / unloading mechanism 200 moves, and the ball bearings 210 below the hinge rod 209 and support rod 207 are in contact with the outer wall of the base 100, the hinge rod 209 and support rod 207 remain vertical while moving horizontally, and the placement plate 208 remains horizontal; when the ball bearings 210 below the hinge rod 209 enter the groove 213, the hinge rod 209 will move downwards, and due to the guiding effect of the guide rod 215 on the hinge rod 209, the hinge rod 209 remains vertical while moving downwards, and drives... The slider 211 moves along the inner wall of the guide groove 212, causing the placement plate 208 to flip downwards with its connection point with the support rod 207 as the center. The front end of the placement plate 208 tilts downwards and corresponds to the collection box 400. At this time, the ball bearing 210 inside the connecting rod 205 moves onto the protrusion 214, driving the fixing mechanism 300 to move upwards as a whole, detaching from the privacy film. At this time, the privacy film can automatically move down into the collection box 400 under the action of the tilted placement plate 208 to complete the automatic unloading. This is the unloading station. At this time, the motor 20 1. The rotating rod 202 continues to rotate, and the inner ball bearing 210 of the hinge rod 209 moves upward from the groove 213 until it contacts the outer wall of the base 100. The upward movement of the hinge rod 209 pushes the placement plate 208 back to the horizontal state. However, at this time, the inner ball bearing 210 of the connecting rod 205 is still located on the protrusion 214. This is the loading station, where the operator can place the privacy film on the placement plate 208 and wait for inspection. Then, the motor 201 drives the rotating rod 202 to continue rotating, and the inner ball bearing 210 of the connecting rod 205 disengages from the protrusion 214. Block 214 causes the connecting rod 205 to move downward, which in turn causes the fixing mechanism 300 to move downward and contact the privacy film, thus automatically pressing and fixing the privacy film. At this time, the position of the privacy film corresponds to that of the detector 500, which is the detection station, and the light transmittance detection operation can be performed. Thus, by continuously starting and stopping the motor 201, the three sets of loading and unloading mechanisms 200 can correspond to three stations and three states respectively. During the detection process of one set of privacy films, the loading and unloading operations of the other two sets of privacy films can be performed, which improves the overall detection efficiency.

[0026] like Figures 2 to 7 As shown, the fixing mechanism 300 includes a control rod 301, a pressure plate 302 is slidably connected to the outer wall of the control rod 301, an insert block 304 is elastically connected to the inner wall of the pressure plate 302 via a connecting spring 303, a slot 305 is provided on the outer wall of the control rod 301, a moving plate 306 is elastically connected to the inner wall of the control rod 301 via a telescopic spring 308, an abutment block 307 is fixedly connected to the outer wall of the moving plate 306, and a pressure rod 309 is fixedly connected to the outer wall of the moving plate 306.

[0027] The above scheme is adopted: the control rod 301 is fixed to the top outer wall of the connecting rod 205. When the connecting rod 205 moves up and down, it will drive the control rod 301 to move synchronously. The control rod 301 drives the pressure plate 302 that is engaged with it to move. The bottom of the pressure plate 302 is a soft rubber plate. When the connecting rod 205 is not in contact with the protrusion 214, the pressure plate 302 contacts the privacy film and presses it down to fix it. When the connecting rod 205 moves onto the protrusion 214, the control rod 301 drives the pressure plate 302 to move up synchronously and disengage from the privacy film. At this time, the hinge rod 209 can be moved down, and the placement plate 208 flips down to automatically unload the privacy film. The pressure plate 302 is engaged with the control rod 301 through the insert block 304 and the slot 305. There are multiple sets of slots 305, which can move the pressure plate 302 to multiple positions and fix it. This can improve the adaptability of the pressure plate 302 to pressing and fixing privacy films of different lengths, and the range is relatively wide.

[0028] like Figures 2 to 7 As shown, the control rod 301 is fixedly connected to the outer wall of the connecting rod 205, the insert block 304 is engaged with the slot 305, and the insert block 304 is slidably connected to the inner wall of the pressure plate 302; one end of the connecting spring 303 is fixedly connected to the outer wall of the insert block 304, and the other end of the connecting spring 303 is fixedly connected to the inner wall of the pressure plate 302; one end of the telescopic spring 308 is fixedly connected to the outer wall of the moving plate 306, and the other end of the telescopic spring 308 is fixedly connected to the inner wall of the control rod 301, and the moving plate 306 is slidably connected in the inner wall of the control rod 301; the abutment block 307 contacts the outer wall of the insert block 304, the pressure rod 309 is slidably connected to the inner wall of the control rod 301, and the pressure plate 302 contacts the top outer wall of the placement plate 208.

[0029] Using the above scheme: Under normal conditions, the insert block 304 remains in an extended state due to the elastic force of the connecting spring 303 and is always engaged with a set of slots 305. At this time, the telescopic spring 308 pulls the moving plate 306 to a certain position due to its elastic force. After the insert block 304 is engaged, the abutment block 307 is in contact with the outer wall of the insert block 304, but the two do not exert pressure on each other. The pressure rod 309 penetrates the rear outer wall of the control rod 301. When the operator presses the pressure rod 309 inward, it will drive the moving plate 306 to move synchronously. The telescopic spring 308 is stretched, and the moving plate 306 moves towards the insert block 304, causing the abutment block 307 to contact the insert block 304, exerting pressure on the insert block 304 and causing the insert block 304 to compress the connecting spring 305. 3. Move the lever 309 to the inner wall of the control lever 301; after the lever 309 is pressed to the limit position, the abutment block 307 is also inserted into the slot 305, so that the insert block 304 can be completely separated from the slot 305, and the fixation between the pressure plate 302 and the control lever 301 can be released, so that the pressure plate 302 can be moved laterally; when both sets of pressure plates 302 are moved to the appropriate position and correspond to the two sides of the privacy film, the lever 309 can be released, and the telescopic spring 308 will drive the moving plate 306 and the abutment block 307 to reset due to the elastic force, and the abutment block 307 will disengage from the slot 305. The connecting spring 303 will drive the insert block 304 to pop out and engage with the corresponding slot 305, so that the pressure plate 302 can be fixed. The operation is simple and quick and easy to use.

[0030] Working principle and usage process of this invention: Before the device is started, the three sets of loading and unloading mechanisms 200 are initially in the initial state. The operator can first adjust the spacing of the pressure plates 302 of the fixing mechanism 300 according to the length of the privacy film to be tested; press the pressure rod 309 inward, which will drive the moving plate 306 to stretch the telescopic spring 308 and move it. The abutment block 307 pushes the insertion block 304 to compress the connecting spring 303 and retract it into the inner wall of the pressure plate 302, thus releasing the engagement between the pressure plate 302 and the control rod 301; then move the two sets of pressure plates 302 laterally to the position that matches the two sides of the privacy film, release the pressure rod 309, the telescopic spring 308 drives the moving plate 306 to reset, and the connecting spring 303 pushes the insertion block 304 to pop out and lock into the corresponding slot 305, thus completing the fixing of the spacing of the pressure plates 302.

[0031] Then, the privacy film can be placed flat on the placement plate 208 at the loading station. The motor 201 starts and drives the rotating rod 202 to rotate. The loading and unloading mechanism 200 rotates, and the inner wall ball 210 of the connecting rod 205 disengages from the protrusion 214, causing the fixing mechanism 300 to move down as a whole. The rubber soft plate at the bottom of the pressure plate 302 adheres to the upper surface of the privacy film, realizing automatic downward pressure and fixing, and preventing the privacy film from shifting during the testing process. When the privacy film is moved to precisely aligned with the detection optical path of the detector 500, the motor 201 stops running, and the light transmittance test can be performed.

[0032] During the inspection process, the operator can place the next privacy film at the loading station. After the inspection is completed, the motor 201 continues to drive the rotating rod 202 to rotate, causing the loading and unloading mechanism 200 to move to the unloading station. At this time, the ball bearing 210 at the bottom of the hinge rod 209 enters the groove 213 of the base 100. The hinge rod 209 moves vertically downward along the inner wall of the guide rod 215, causing the slider 211 to slide downward along the guide groove 212 of the placement plate 208. This causes the placement plate 208 to flip downward with its connection point with the support rod 207 as the axis, tilting the front end and aligning it with the collection box 400. At the same time, the ball bearing 210 on the inner wall of the connecting rod 205 moves onto the protrusion 214, driving the fixing mechanism 3. The entire structure moves upward, the pressure plate 302 disengages from the privacy film, releasing the privacy film from its fixation. The privacy film then automatically tilts and moves downward into the collection box 400, completing the automatic unloading process. This completes the loading, testing, and unloading of a set of privacy films. During the testing of a set of privacy films, the operator can simultaneously load the privacy film onto the placement plate 208 at the loading station, while the unloading station collects the previous test film. This enables parallel operation of three stations, significantly improving the overall testing efficiency. It eliminates the need to wait for a set of privacy films to be fully tested and unloaded before placing another set for testing, reducing the number of steps for operators and lowering their workload.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the light transmittance of a privacy film, comprising a base (100), characterized in that: The outer wall of the base (100) is provided with a collection box (400), and a detector (500) is fixedly connected to the outer wall of the base (100). It also includes: The loading and unloading mechanism (200) is located on the outer wall of the base (100); A fixing mechanism (300) is installed on the loading and unloading mechanism (200); The loading and unloading mechanism (200) includes a motor (201), the output shaft of which is fixedly connected to a rotating rod (202). A groove (203) is formed on the outer wall of the rotating rod (202), and a sliding rod (204) is slidably connected to the inner wall of the groove (203). A connecting rod (205) is fixedly connected to the outer wall of the sliding rod (204), and a fixing rod (206) is fixedly connected to the outer wall of the connecting rod (205). The outer wall of the fixing rod (206) is... A support rod (207) is slidably connected to the wall. A placement plate (208) is hinged to the outer wall of the support rod (207). A guide groove (212) is provided on the bottom outer wall of the placement plate (208). A slider (211) is slidably connected to the inner wall of the guide groove (212). A hinge rod (209) is hinged to the inner wall of the slider (211). A protrusion (214) is fixedly connected to the top outer wall of the base (100). A groove (213) is provided on the inner wall of the base (100).

2. The privacy film light transmittance detection device according to claim 1, characterized in that: The inner walls of the bottom ends of the hinge rod (209) and the connecting rod (205) are both connected to ball bearings (210), and the outer wall of the fixed rod (206) is fixedly connected to a guide rod (215).

3. The privacy film light transmittance detection device according to claim 1, characterized in that: The motor (201) is fixedly connected to the inner wall of the base (100), and the support rod (207) is fixedly connected to the guide rod (215).

4. The privacy film light transmittance detection device according to claim 1, characterized in that: The ball (210) on the inner wall of the bottom end of the hinge rod (209) contacts the inner wall of the groove (213), and the ball (210) on the inner wall of the connecting rod (205) contacts the outer wall of the protrusion (214).

5. The privacy film light transmittance detection device according to claim 2, characterized in that: The guide rod (215) is slidably connected to the outer wall of the hinge rod (209), and the connecting rod (205) is slidably connected to the inner wall of the placement plate (208).

6. The privacy film light transmittance detection device according to claim 1, characterized in that: The fixing mechanism (300) includes a control rod (301), a pressure plate (302) is slidably connected to the outer wall of the control rod (301), an insert (304) is elastically connected to the inner wall of the pressure plate (302) via a connecting spring (303), a slot (305) is provided on the outer wall of the control rod (301), a moving plate (306) is elastically connected to the inner wall of the control rod (301) via a telescopic spring (308), an abutment block (307) is fixedly connected to the outer wall of the moving plate (306), and a pressure rod (309) is fixedly connected to the outer wall of the moving plate (306).

7. The privacy film light transmittance detection device according to claim 6, characterized in that: The control rod (301) is fixedly connected to the outer wall of the connecting rod (205), the insert (304) is engaged with the slot (305), and the insert (304) is slidably connected to the inner wall of the pressure plate (302).

8. The privacy film light transmittance detection device according to claim 6, characterized in that: One end of the connecting spring (303) is fixedly connected to the outer wall of the insert block (304), and the other end of the connecting spring (303) is fixedly connected to the inner wall of the pressure plate (302).

9. The privacy film light transmittance detection device according to claim 6, characterized in that: One end of the telescopic spring (308) is fixedly connected to the outer wall of the movable plate (306), and the other end of the telescopic spring (308) is fixedly connected to the inner wall of the control rod (301). The movable plate (306) is slidably connected to the inner wall of the control rod (301).

10. The privacy film light transmittance detection device according to claim 6, characterized in that: The abutment block (307) contacts the outer wall of the insertion block (304), the pressure rod (309) is slidably connected to the inner wall of the control rod (301), and the pressure plate (302) contacts the top outer wall of the placement plate (208).

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