Screen privacy film privacy angle test tool

Abstract

The present application relates to screen privacy film privacy angle test technical field, specifically disclose a kind of screen privacy film privacy angle test tool, comprising: bottom plate, detection box and fixed box, detection box is fixedly connected with the top of bottom plate, fixed box is fixedly connected with the top of bottom plate;Further comprising: positioning mechanism, positioning mechanism is arranged in the inside of detection box, positioning mechanism is used to clamp screen privacy film, the present application at least has following beneficial effects: by the positioning mechanism and test mechanism of being set, can be clamped and fixed according to different size size screen privacy film, and by utilizing drive motor realizes angle automatic adjustment, drive cylinder controls light source position, optical sensor automatically discriminates visible state, greatly reduces human error, improves test consistency and efficiency, so screen privacy film can be detected and tested for privacy angle, so the diversity of monitoring test result can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of screen privacy film privacy angle testing technology, specifically a screen privacy film privacy angle testing fixture. Background Technology

[0002] The privacy screen protector privacy angle testing device is a specialized testing instrument used to measure and verify the privacy performance of privacy screen protectors. Its core function is to quantitatively determine the visible angle range of the privacy screen protector at different viewing angles, thereby assessing whether it achieves the claimed privacy protection effect of "visible only from the front and not from the sides".

[0003] With the widespread use of mobile display devices such as smartphones, tablets, and laptops, users' demand for screen privacy protection is increasing. Screen privacy films are widely used because they can effectively limit the viewing angle and prevent others from peeping. However, the performance of privacy film products on the market varies, and there is a lack of unified, efficient, and visual testing methods for the core indicator "peeping angle," which is the degree of deviation from the direct viewing direction before the screen content becomes invisible.

[0004] Traditional testing methods rely heavily on manual visual judgment, which is highly subjective and has poor repeatability under different ambient light conditions. Furthermore, they cannot achieve precise angle adjustment and quantitative display of results. Some laboratories use optical instruments with rotating platforms for measurement, but the equipment is expensive, the operation is complex, and the time is long, making it difficult to apply to rapid quality inspection on production lines or routine spot checks in small enterprises. To address this, we propose a screen privacy film privacy angle testing fixture. Summary of the Invention

[0005] The purpose of this invention is to provide a screen privacy film privacy angle testing fixture to solve the problems mentioned in the background art. Traditional testing methods rely heavily on manual visual judgment, which is highly subjective and has poor repeatability in different environments. Furthermore, they cannot achieve precise angle adjustment and quantitative display of results. Some laboratories use optical instruments with rotating platforms for measurement, but the equipment is expensive, the operation is complicated, and the time is long, making it difficult to apply to the problems of rapid quality inspection on production lines or daily spot checks in small enterprises.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screen privacy film privacy angle testing fixture, comprising: a base plate, a testing box and a fixing box, wherein the testing box is fixedly connected to the top of the base plate and the fixing box is fixedly connected to the top of the base plate; It also includes: a positioning mechanism, which is located inside the testing box. The positioning mechanism is used to hold the screen privacy film and adjust the testing angle position according to the testing needs to meet the angle requirements under different testing scenarios. The testing mechanism is located between the fixed box and the positioning mechanism. The testing mechanism is used to test the privacy angle of the screen privacy film. It can perform tests at different distances and under different brightness, and is compatible with the testing standards of different specifications of privacy films. The display mechanism is mounted on the fixed box. The fixed box is used to adaptively adjust and display the test result color based on the information fed back by the testing mechanism, and to intuitively distinguish whether the privacy protection performance meets the standard through different colors. The pointer mechanism is located between the display mechanism and the fixed box. The pointer mechanism is used to drive the display mechanism to display the specific critical privacy angle value test result.

[0007] The positioning mechanism includes a base fixedly connected to the bottom of the inner side of the fixed box. Two fixing blocks are fixedly connected to the top of the base. A rotating shaft is rotatably connected inside each of the two fixing blocks. A positioning corner groove is opened inside the rotating shaft. A positioning corner block is slidably connected to the inner wall of the positioning corner groove. A connecting rod is fixedly connected to one side of the positioning corner block. A clamping circular plate is fixedly connected to the end of the connecting rod away from the positioning corner block. A fastening bolt is rotatably connected to the side of the positioning corner block away from the connecting rod. The fastening bolt is threadedly connected to the rotating shaft.

[0008] The base has a drive motor fixedly connected to one side, and the output end of the drive motor is fixedly connected to a pulley on the outside of one of the rotating shafts. A belt is provided on the outside of the two pulleys.

[0009] The testing mechanism includes a drive cylinder that is fixedly connected to the top of the testing box, and an LED light is fixedly connected to the output end of the drive cylinder.

[0010] An optical sensor is fixedly connected to the top of the base.

[0011] The display mechanism includes an insulating box fixedly connected to the inside of a fixed box. A first conductive copper block is fixedly connected to the inside of the insulating box. A limiting groove is opened inside the insulating box. A second conductive copper block is slidably connected to the inner wall of the limiting groove. Two return springs are fixedly connected between the bottom of the second conductive copper block and the bottom of the inside of the insulating box. An insulating block is fixedly connected to one side of the second conductive copper block.

[0012] The bottom of the insulating block is fixedly connected to a magnet, and the bottom of the inner side of the fixed box is fixedly connected to an electromagnet. The top of the electromagnet and the bottom of the magnet have opposite magnetic poles. The bottom of the fixed box is fixedly connected to a multi-color light.

[0013] The pointer mechanism includes a fixed circular seat that is fixedly connected to one side of the fixed box. A connecting shaft is rotatably connected inside the fixed circular seat. One end of the connecting shaft is located inside the fixed circular seat and is fixedly connected to a gear. A rack is meshed with one side of the gear. A connecting plate is fixedly connected between one side of the rack and one side of the insulating block.

[0014] The end of the connecting shaft away from the gear is fixedly connected to a pointer block, and multiple angle blocks are equidistantly arranged on one side of the fixed round seat.

[0015] The testing box has a first glass window connected to its interior via a first hinge, and the fixed box has a second glass window connected to its interior via a second hinge.

[0016] The present invention has at least the following beneficial effects: The positioning and testing mechanisms allow for the clamping and fixing of privacy screen protectors of varying sizes. An automatic angle adjustment is achieved via a drive motor, while a drive cylinder controls the light source position. Optical sensors automatically determine the visibility status, significantly reducing human error and improving testing consistency and efficiency. This enables the testing of privacy screen protectors' anti-spy angles, ensuring diverse monitoring results. The display and pointer mechanisms, based on feedback from the testing mechanism, use multi-color lights (red and green) to visually indicate whether the privacy performance meets standards. A pointer block, in conjunction with an angle block, directly displays the critical privacy angle value, facilitating recording and comparison. Through the coordination of these mechanisms, the system eliminates the need for expensive spectrometers or complex software systems, relying primarily on electromechanical structures and simple circuits to achieve its core functions. This makes it suitable for widespread use by small and medium-sized enterprises, quality inspection agencies, and R&D laboratories. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the fixing box of the present invention; Figure 3 This is a schematic diagram of the structure of the driving cylinder and LED light of the present invention; Figure 4 This is a schematic diagram of the positioning mechanism of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fixing block of the present invention; Figure 6 This is a schematic diagram of the internal structure of the fixing box of the present invention; Figure 7 This is a schematic diagram of the display mechanism of the present invention; Figure 8 This is a schematic diagram of the pointer mechanism of the present invention.

[0018] In the diagram: 1. Detection box; 2. Fixing box; 3. Positioning mechanism; 31. Base; 32. Fixing block; 33. Rotating shaft; 34. Positioning corner groove; 35. Positioning corner block; 36. Connecting rod; 37. Clamping round plate; 38. Fastening bolt; 39. Drive motor; 310. Pulley; 311. Belt; 4. Testing mechanism; 41. Drive cylinder; 42. LED light; 43. Optical sensor; 5. Display mechanism; 51. Insulation box; 52. First conductive copper block; 53. Limiting slide groove; 54. Second conductive copper block; 55. Insulation block; 56. Magnet; 57. Electromagnet; 58. Return spring; 59. Multi-color light; 6. Pointer mechanism; 61. Fixing round seat; 62. Gear; 63. Rack; 64. Pointer block; 65. Angle block; 66. Connecting shaft; 67. Connecting plate; 7. First glass window; 8. Second glass window; 9. Base plate. 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] Example 1 Please see Figures 1 to 8 The present invention provides a technical solution: a screen privacy film privacy angle testing fixture, comprising: a base plate 9, a testing box 1 and a fixing box 2, wherein the testing box 1 is fixedly connected to the top of the base plate 9 and the fixing box 2 is fixedly connected to the top of the base plate 9. It also includes: a positioning mechanism 3, which is set inside the testing box 1. The positioning mechanism 3 is used to hold the screen privacy film and adjust the testing angle position according to the testing needs to meet the angle requirements under different testing scenarios. The testing mechanism 4 is set between the fixed box 2 and the positioning mechanism 3. The testing mechanism 4 is used to test the privacy angle of the screen privacy film. It can perform tests at different distances and under different brightness, and is compatible with the testing standards of different specifications of privacy films. Display mechanism 5 is set on fixed box 2. Fixed box 2 is used to adaptively adjust and display the test result color according to the information fed back by test mechanism 4, and intuitively distinguish whether the anti-peeping performance meets the standard through different colors; The pointer mechanism 6 is located between the display mechanism 5 and the fixed box 2. The pointer mechanism 6 is used to drive the display mechanism 5 to display the specific critical privacy angle value test result.

[0021] The positioning mechanism 3 and testing mechanism 4, as described above, can clamp and fix screen privacy films of different sizes. The drive motor 39 automatically adjusts the angle, the drive cylinder 41 controls the light source position, and the optical sensor 43 automatically determines the visibility status, significantly reducing human error and improving test consistency and efficiency. This allows for the detection and testing of the privacy angle of the screen privacy film, ensuring diverse monitoring results. The display mechanism 5 and pointer mechanism 6, based on feedback from the testing mechanism 4, use multi-color lights 59 to visually reflect whether the privacy performance meets the standards in red and green. The pointer block 64, in conjunction with the angle block 65, directly displays the critical privacy angle value, facilitating recording and comparison. Through the cooperation of these mechanisms, no expensive spectrometer or complex software system is needed; the core functions are achieved primarily through electromechanical structures and simple circuits, making it suitable for widespread use in small and medium-sized enterprises, quality inspection agencies, and R&D laboratories.

[0022] The positioning mechanism 3 includes a base 31 fixedly connected to the bottom of the inner side of the fixed box 2. Two fixing blocks 32 are fixedly connected to the top of the base 31. A rotating shaft 33 is rotatably connected inside the two fixing blocks 32. A positioning corner groove 34 is opened inside the rotating shaft 33. A positioning corner block 35 is slidably connected to the inner wall of the positioning corner groove 34. A connecting rod 36 is fixedly connected to one side of the positioning corner block 35. A clamping circular plate 37 is fixedly connected to the end of the connecting rod 36 away from the positioning corner block 35. A fastening bolt 38 is rotatably connected to the side of the positioning corner block 35 away from the connecting rod 36. The fastening bolt 38 is threadedly connected to the rotating shaft 33. A drive motor 39 is fixedly connected to one side of the base 31. A pulley 310 is fixedly connected to the output end of the drive motor 39 and the outer side of one of the rotating shafts 33. A belt 311 is provided on the outer side of the two pulleys 310. In use, a standard display screen with a privacy film is placed between the two clamping discs 37 of the positioning mechanism 3. The fastening bolts 38 are tightened, causing the positioning corner block 35 to slide along the positioning corner groove 34 in the rotating shaft 33. This pushes the connecting rod 36 to clamp the sample, ensuring no displacement during the test. The drive motor 39 is then started, and its output end drives the rotating shafts 33 on both sides to rotate synchronously through the pulley 310 and belt 311, thereby driving the clamping discs 37 and the clamped screen to rotate around the axis, achieving precise angle adjustment.

[0023] The testing mechanism 4 includes a drive cylinder 41 fixedly connected to the top of the testing box 1, an LED light 42 fixedly connected to the output end of the drive cylinder 41, and an optical sensor 43 fixedly connected to the top of the base 31. When in use, the drive cylinder 41 moves to push the LED light 42 down to a preset height, illuminating the front of the screen with constant brightness. The screen displays a white image. When the viewing angle exceeds the privacy range, the image darkens. The optical sensor 43 on the top of the base 31 detects the intensity of the reflected light from the screen in real time and transmits the light intensity signal to the display mechanism 5. The privacy distance can be tested by adjusting the position of the output end of the drive cylinder 41.

[0024] The display mechanism 5 includes an insulating box 51 fixedly connected to the inside of the fixed box 2. A first conductive copper block 52 is fixedly connected to the inside of the insulating box 51. A limiting groove 53 is opened inside the insulating box 51. A second conductive copper block 54 is slidably connected to the inner wall of the limiting groove 53. Two return springs 58 are fixedly connected between the bottom of the second conductive copper block 54 and the bottom of the inside of the insulating box 51. An insulating block 55 is fixedly connected to one side of the second conductive copper block 54. A magnet 56 is fixedly connected to the bottom of the insulating block 55. An electromagnet 57 is fixedly connected to the bottom of the inside of the fixed box 2. The top of the electromagnet 57 and the bottom of the magnet 56 have opposite magnetic poles. A multi-color lamp 59 is fixedly connected to the bottom of the fixed box 2. In use, when the light intensity is lower than the set threshold, the electromagnet 57 is energized to the corresponding electromagnetic intensity based on the information fed back by the optical sensor 43. The energized electromagnet 57 and the magnet 56 attract each other due to their opposite magnetic poles, overcoming the elastic force of the reset spring 58 and pulling the second conductive copper block 54 down. The second conductive copper block 54 contacts the first conductive copper block 52 and conducts electricity, thereby illuminating a specific color for the multi-color lamp 59 connected to the second conductive copper block 54 by a wire. Green can be set to indicate qualified and red to indicate over-angle. The first conductive copper block 52 is connected to an external power supply line, and the second conductive copper block 54 is connected to the multi-color lamp 59 by a wire. Different colors can be displayed by the multi-color lamp 59 depending on the power applied.

[0025] Example 2 like Figures 6 to 8 In this second embodiment, the other structures remain unchanged, but the difference from the first embodiment is: The pointer mechanism 6 includes a fixed circular seat 61 fixedly connected to one side of the fixed box 2. A connecting shaft 66 is rotatably connected inside the fixed circular seat 61. One end of the connecting shaft 66 is located inside the fixed circular seat 61 and is fixedly connected to a gear 62. A rack 63 is meshed with one side of the gear 62. A connecting plate 67 is fixedly connected between one side of the rack 63 and one side of the insulating block 55. A pointer block 64 is fixedly connected to the end of the connecting shaft 66 away from the gear 62. A plurality of angle blocks 65 are equidistantly arranged on one side of the fixed circular seat 61. When in use, when the insulating block 55 moves, the rack 63 can be moved by the connecting plate 67. The moving rack 63 drives the gear 62 to rotate clockwise. The rotating rack 63 drives the pointer block 64 through the connecting shaft 66, so that the pointer block 64 points to the corresponding angle block 65 next to the fixed round seat 61, thus realizing physical angle indication.

[0026] The interior of the testing box 1 is connected to a first glass window 7 via a first hinge, and the interior of the fixed box 2 is connected to a second glass window 8 via a second hinge; During use, the clamping status can be observed through the first glass window 7 and the position of the pointer block 64 can be viewed through the second glass window 8. The enclosed design of the enclosure effectively isolates external stray light interference and prevents operators from accidentally touching moving parts.

[0027] 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.

[0028] 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 testing fixture for the privacy angle of a screen privacy film, characterized in that: include: The system comprises a base plate, a testing box, and a fixing box, wherein the testing box is fixedly connected to the top of the base plate, and the fixing box is fixedly connected to the top of the base plate. It also includes: a positioning mechanism, which is located inside the testing box. The positioning mechanism is used to hold the screen privacy film and adjust the testing angle position according to the testing needs to meet the angle requirements under different testing scenarios. The testing mechanism is set between the fixed box and the positioning mechanism. The testing mechanism is used to test the privacy angle of the screen privacy film. It can realize the test at different distances and under different brightness, and is compatible with the testing standards of different specifications of privacy films. The display mechanism is mounted on a fixed box. The fixed box is used to adaptively adjust and display the color of the test result based on the information fed back by the testing mechanism, and to intuitively distinguish whether the anti-peeping performance meets the standard through different colors. A pointer mechanism is disposed between the display mechanism and the fixed box. The pointer mechanism is used to drive the display mechanism to display the specific critical privacy angle value test result.

2. The screen privacy film privacy angle testing fixture according to claim 1, characterized in that: The positioning mechanism includes a base fixedly connected to the bottom of the inner side of the fixed box. Two fixing blocks are fixedly connected to the top of the base. A rotating shaft is rotatably connected inside each of the two fixing blocks. A positioning corner groove is opened inside the rotating shaft. A positioning corner block is slidably connected to the inner wall of the positioning corner groove. A connecting rod is fixedly connected to one side of the positioning corner block. A clamping circular plate is fixedly connected to the end of the connecting rod away from the positioning corner block. A fastening bolt is rotatably connected to the side of the positioning corner block away from the connecting rod. The fastening bolt is threadedly connected to the rotating shaft.

3. The screen privacy film privacy angle testing fixture according to claim 2, characterized in that: A drive motor is fixedly connected to one side of the base. The output end of the drive motor and the outer side of one of the rotating shafts are both fixedly connected to pulleys. A belt is provided on the outer side of the two pulleys.

4. The screen privacy film privacy angle testing fixture according to claim 2, characterized in that: The testing mechanism includes a drive cylinder fixedly connected to the top of the testing box, and an LED light is fixedly connected to the output end of the drive cylinder.

5. The screen privacy film privacy angle testing fixture according to claim 4, characterized in that: An optical sensor is fixedly connected to the top of the base.

6. The screen privacy film privacy angle testing fixture according to claim 1, characterized in that: The display mechanism includes an insulating box fixedly connected to the inside of a fixed box. A first conductive copper block is fixedly connected to the inside of the insulating box. A limiting groove is opened inside the insulating box. A second conductive copper block is slidably connected to the inner wall of the limiting groove. Two return springs are fixedly connected between the bottom of the second conductive copper block and the bottom of the inside of the insulating box. An insulating block is fixedly connected to one side of the second conductive copper block.

7. The screen privacy film privacy angle testing fixture according to claim 6, characterized in that: A magnet is fixedly connected to the bottom of the insulating block, and an electromagnet is fixedly connected to the bottom of the inner side of the fixing box. The top of the electromagnet and the bottom of the magnet have opposite magnetic poles. A multi-color light is fixedly connected to the bottom of the fixing box.

8. The screen privacy film privacy angle testing fixture according to claim 7, characterized in that: The pointer mechanism includes a fixed circular seat fixedly connected to one side of the fixed box. A connecting shaft is rotatably connected inside the fixed circular seat. One end of the connecting shaft is located inside the fixed circular seat and is fixedly connected to a gear. A rack is meshed with one side of the gear. A connecting plate is fixedly connected between one side of the rack and one side of the insulating block.

9. The screen privacy film privacy angle testing fixture according to claim 8, characterized in that: A pointer block is fixedly connected to the end of the connecting shaft away from the gear, and multiple angle blocks are equidistantly arranged on one side of the fixed circular seat.

10. The screen privacy film privacy angle testing fixture according to claim 1, characterized in that: The interior of the testing box is connected to a first glass window via a first hinge, and the interior of the fixing box is connected to a second glass window via a second hinge.

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