Thickness accurate measuring device for polarizing plate
By designing a polarizer thickness measuring device with adjustable C-shaped plate spacing, the problem of difficulty in measuring the center thickness of large-size polarizers in the existing technology has been solved, enabling accurate measurement of polarizers of different sizes and improving the applicability of the measuring device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN HUARUIXIAN OPTOELECTRONICS TECHNOLOGY CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-05
Smart Images
Figure CN224327672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polarizer thickness measurement technology, and in particular to a precise thickness measurement device for polarizers. Background Technology
[0002] Polarizers are composed of a thin film made of a highly oriented polymer with linear molecules that are naturally parallel to the film surface. Their fabrication typically involves stretching and fixing the molecules along a single axis, ensuring they are parallel to each other and perpendicular to the surface. Films made in this way exhibit unique light-receptive properties, allowing light to oscillate only within a specific plane in a particular direction. Polarizers are now used in virtually every display module, widely applied in mobile phones, tablets, laptops, monitors, televisions, CNC displays, 3C products, beauty and medical devices, industrial applications, entertainment applications, and automotive displays.
[0003] After polarizer production, to check its thickness uniformity, it is necessary to measure the thickness at at least the four corners and the center of the polarizer. Existing technologies disclose methods such as... Figure 1 The thickness gauge shown can quickly measure the thickness of the four corners of a polarizer. However, because its throat depth is generally around 30mm, it is difficult to smoothly insert larger polarizers (width greater than 60mm). Consequently, it is difficult to extend the center measurement position of a large polarizer to the end face of the measuring column, making it difficult to conveniently measure the center thickness of a large polarizer. Utility Model Content
[0004] The purpose of this invention is to provide a precise thickness measuring device for polarizers, which can conveniently measure the thickness of the four corners and center of different sizes, thereby improving the flexibility of the device.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A precision thickness measuring device for polarizers includes a placement stage and a measuring instrument body disposed at the top of the placement stage. The measuring instrument body includes a base plate disposed at the top of the placement stage, a lower measuring column disposed at the top of the base plate, two C-shaped plates capable of moving towards or away from each other, a connecting plate disposed at the top of the C-shaped plates, a main board disposed on the connecting plate, a display screen disposed on the front of the main board, a pressing handle disposed on the main board, a moving rod vertically disposed within the main board, and a limiting component for limiting the C-shaped plates to the base plate and the connecting plate. The bottom end of the moving rod passes through the connecting plate and is provided with an upper measuring column adapted to the lower measuring column, and the top end of the moving rod passes through the main board and is slidably connected to the pressing handle.
[0007] Preferably, each of the C-shaped plates is provided with a slider at its top and bottom, and both the connecting plate and the bottom plate are provided with horizontal grooves that slide in cooperation with the sliders.
[0008] Preferably, the limiting assembly includes a fixing plate disposed on the outer side of the bottom wall of each C-shaped plate, a first limiting hole disposed on the fixing plate, a plurality of second limiting holes disposed on the top surface of the bottom plate and adapted to the first limiting hole, a first bolt disposed in the first limiting hole and the second limiting holes adapted thereto, a third limiting hole disposed on the top wall of each C-shaped plate, a fourth limiting hole vertically inserted through the connecting plate and adapted to the third limiting hole, and a second bolt disposed in the third limiting hole and the fourth limiting hole adapted thereto.
[0009] Preferably, the base plate and the placement platform are connected by a third bolt.
[0010] Preferably, the motherboard is provided with a ring handle.
[0011] Preferably, a placement plate is fitted onto the outer wall of the lower measuring column.
[0012] Preferably, the placement plate and the lower measuring column are threaded together.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] In the existing technology ( Figure 1 High-precision thickness gauges typically have a throat depth of around 30mm, making it difficult to smoothly insert larger polarizers (width greater than 60mm). This, in turn, makes it difficult to ensure the center measurement position of large polarizers reaches the upper and lower measuring columns, hindering convenient measurement of the center thickness of larger polarizers. This invention addresses this by providing a placement platform, a base plate at the top of the platform, a lower measuring column at the top of the base plate, and two C-shaped plates that can move towards or away from each other. A connecting plate is also provided at the top of the two C-shaped plates. In practical application, the distance between the two C-shaped plates can be adjusted according to the size of the polarizer, allowing the measurement position of polarizers of different sizes to reach the upper and lower measuring columns. This adapts to the thickness measurement needs of polarizers of different sizes, improving the flexibility of the thickness measurement device. Attached Figure Description
[0015] Figure 1 A schematic diagram of the structure of a thickness gauge in the prior art, viewed from the front.
[0016] Figure 2 for Figure 1 A structural diagram viewed from the front;
[0017] Figure 3 for Figure 2 A top-view structural diagram of the C-shaped plate;
[0018] Figure 4 for Figure 2 A top-view structural diagram of the connecting plate;
[0019] Figure 5 for Figure 2 A schematic diagram of the structure after the two C-shaped plates in the middle have been moved towards each other, viewed from the front.
[0020] Figure 6 for Figure 2 A schematic diagram of the structure with the ring handle installed in the center, viewed from the front.
[0021] Figure 7 for Figure 2 A structural diagram showing the front view after the placement plate is set in the middle;
[0022] In the diagram: 1-Placement platform, 2-Base plate, 3-C-shaped plate, 4-Connecting plate, 5-Main board, 6-Press handle, 7-Moving rod, 8-Lower measuring column, 9-Upper measuring column, 10-Slider, 13-Second limiting hole, 14-First bolt, 15-Third bolt, 16-Ring handle, 17-Placement plate, 21-Fixing plate, 22-Fourth limiting hole, 23-Second bolt. Detailed Implementation
[0023] Example 1
[0024] In existing technologies, such as Figure 1 The high-precision thickness gauge shown includes a main board 5, a moving rod 7, a pressing handle 6, a lower measuring column 8, and an upper measuring column 9. These devices have the same structure and function as the devices with the same names in this utility model; that is, this utility model only differs in that... Figure 1 Improved the external throat depth of motherboard 5 (i.e.) based on the previous version. Figure 1 The dimension shown is 30mm (the position is displayed in the image), and other components, including chips and batteries, still use the same dimensions. Figure 1 The installation or implementation is carried out in the following manner. Figure 1 For details on the thickness gauge, please refer to the 3rd generation German Suce high-precision thickness gauge, model ES-ch-02. The measurement principle is existing technology and will not be elaborated upon here.
[0025] To address the limitations of existing technologies in measuring larger polarizers, this invention provides a precise thickness measuring device for polarizers, such as... Figure 2As shown, the instrument includes a placement platform 1 and a measuring instrument body disposed at the top of the placement platform 1. The measuring instrument body includes a base plate 2 disposed at the top of the placement platform 1, a lower measuring column 8 disposed at the top of the base plate 2 and two C-shaped plates 3 that can move towards or away from each other, a connecting plate 4 disposed at the top of the C-shaped plates 3, a main plate 5 disposed on the connecting plate 4, a display screen disposed on the front of the main plate 5, a pressing handle 6 disposed on the main plate 5, a moving rod 7 vertically disposed within the main plate 5, and a limiting component for limiting the C-shaped plates 3 to the base plate 2 and the connecting plate 4. The bottom end of the moving rod 7 passes through the connecting plate 4 and is provided with an upper measuring column 9 adapted to the lower measuring column 8. The top end of the moving rod 7 passes through the main plate 5 and is slidably connected to the pressing handle 6.
[0026] Furthermore, such as Figure 3 and Figure 5 As shown, each of the C-shaped plates 3 has a slider 10 at its top and bottom, and both the connecting plate 4 and the base plate 2 have horizontal grooves (existing technology, not shown in the figure) that slide in cooperation with the sliders 10. Further, as... Figure 3-4 As shown, the limiting assembly includes a fixing plate 21 disposed on the outer side of the bottom wall of each C-shaped plate 3, a first limiting hole disposed on the fixing plate 21, a plurality of second limiting holes 13 disposed on the top surface of the bottom plate 2 and adapted to the first limiting hole, a first bolt 14 disposed in the first limiting hole and the second limiting holes 13 adapted thereto, a third limiting hole disposed on the top wall of each C-shaped plate 3, a plurality of fourth limiting holes 22 vertically inserted on the connecting plate 4 and adapted to the third limiting hole, and a second bolt 23 disposed in the third limiting hole and the fourth limiting holes 22 adapted thereto.
[0027] It is worth noting that this utility model also includes related chips and batteries from the prior art. The installation positions and models of these components are the same as those in the prior art, and because they are from the prior art, they are not shown in the figures.
[0028] Working principle: If the polarizer is small, it can be directly applied to the polarizer. Figure 2 Based on this, press down on handle 6 (refer to the prior art for the sliding connection between handle 6 and the top of moving rod 7) to move moving rod 7 upwards, and directly place the four corners and center of the polarizer on the top of the lower measuring column 8 respectively. After placement, move moving rod 7 downwards until it reaches the top of the polarizer, after which the corresponding thickness will be displayed on the screen. If the polarizer is large, then... Figure 5As shown, the two C-shaped plates 3 are moved back to back. During the movement, the slider 10 on each C-shaped plate 3 slides horizontally within its matching horizontal groove until the distance between the two C-shaped plates 3 meets the size requirements of the polarizer. Then, the first bolt 14 and the third bolt 15 are respectively... Figure 5 The positional relationship shown is set between the first limiting hole and the matching second limiting hole 13, and between the third limiting hole and the matching fourth limiting hole 22. Then, the moving rod 7 is moved up, and the four corners and the center of the polarizer are placed directly on the top of the lower measuring column 8. After placement, the moving rod 7 is moved down until it reaches the top of the polarizer. Then, the corresponding thickness can be displayed on the screen.
[0029] By adjusting the distance between the two C-shaped plates 3, the measurement requirements of polarizers of different sizes can be adapted, effectively improving the flexibility of the measuring device.
[0030] Example 2
[0031] Based on Example 1, such as Figure 6 As shown, the base plate 2 and the placement platform 1 are connected by a third bolt 15 to allow the measuring instrument body and the placement platform 1 to be separated. Further, as... Figure 6 As shown, the mainboard 5 is equipped with a ring-shaped handle 16, which allows for handheld measurement after the measuring instrument body and the placement platform 1 are separated, improving the flexibility of the device implementation. Furthermore, as... Figure 7 As shown, a placement plate 17 is fitted onto the outer wall of the lower measuring column 8 to provide some support for the portion of the polarizer near the center when measuring its center thickness. Furthermore, the placement plate 17 and the lower measuring column 8 are threaded together to facilitate the installation and removal of the placement plate 17.
Claims
1. A precision thickness measuring device for polarizers, comprising a stage (1) and a measuring instrument body disposed at the top of the stage (1), characterized in that, The measuring instrument body includes a base plate (2) set at the top of the placement platform (1), a lower measuring column (8) set at the top of the base plate (2) and two C-shaped plates (3) that can move towards each other or away from each other, a connecting plate (4) set at the top of the C-shaped plate (3), a main board (5) set on the connecting plate (4), a display screen set on the front of the main board (5), a pressing handle (6) set on the main board (5), a moving rod (7) set vertically in the main board (5), and a limiting component for limiting the C-shaped plate (3) to the base plate (2) and the connecting plate (4); the bottom end of the moving rod (7) passes through the connecting plate (4) and is provided with an upper measuring column (9) adapted to the lower measuring column (8), and the top end of the moving rod (7) passes through the main board (5) and is slidably connected to the pressing handle (6).
2. The device for accurately measuring the thickness of a polarizer according to claim 1, characterized in that, Each of the C-shaped plates (3) is provided with a slider (10) at its top and bottom, and the connecting plate (4) and the base plate (2) are provided with horizontal grooves that slide in cooperation with the sliders (10).
3. The device for accurately measuring the thickness of a polarizer according to claim 2, characterized in that, The limiting assembly includes a fixing plate (21) disposed on the outer side of the bottom wall of each C-shaped plate (3), a first limiting hole disposed on the fixing plate (21), a plurality of second limiting holes (13) disposed on the top surface of the bottom plate (2) and adapted to the first limiting hole, a first bolt (14) disposed in the first limiting hole and the second limiting hole (13) adapted thereto, a third limiting hole disposed on the top wall of each C-shaped plate (3), a fourth limiting hole (22) vertically inserted on the connecting plate (4) and adapted to the third limiting hole, and a second bolt (23) disposed in the third limiting hole and the fourth limiting hole (22) adapted thereto.
4. The device for accurately measuring the thickness of a polarizer according to claim 1, characterized in that, The base plate (2) and the placement platform (1) are connected by a third bolt (15).
5. The device for accurately measuring the thickness of a polarizer according to claim 4, characterized in that, The motherboard (5) is provided with a ring handle (16).
6. The device for accurately measuring the thickness of a polarizer according to claim 1, characterized in that, The outer wall of the lower measuring column (8) is fitted with a placement plate (17).
7. The device for accurately measuring the thickness of a polarizer according to claim 6, characterized in that, The placement plate (17) and the lower measuring column (8) are threaded together.