Light guide plate type optical module

Abstract

The utility model discloses a light guide plate type optical module, which belongs to the field of optical elements and comprises an outer frame and a light guide plate body, the light guide plate body is mounted inside the outer frame, an anti-dazzle film is adhered to one side of the light guide plate body, a microstructure moistening plate is adhered to one side, far away from the light guide plate body, of the anti-dazzle film, and the microstructure moistening plate is mounted on the outer frame. According to the scheme, the wave-shaped structure of the light guide plate body and the zinc oxide composite coating form a dual optical optimization mechanism, the wave-shaped surface enables light rays to be subjected to diffuse reflection for multiple times in the propagation process through micro-scale geometric fluctuation, and the light rays are prevented from dazzle. The directional reflection limitation of a traditional plane light guide plate is broken through, the zinc oxide coating further enhances the total reflection efficiency of light in the light guide plate by means of the characteristic of high refractive index, the uniformity of the light is improved under the synergistic effect of the zinc oxide coating and the zinc oxide coating, and compared with the traditional light guide plate, the phenomena of edge dark corners and central light spots are effectively eliminated.

Description

Technical Field

[0001] This utility model relates to the field of optical components, and more specifically, to a light guide plate type optical module. Background Technology

[0002] In the modern display and lighting field, light guide plates are extremely important components. Traditional light guide plates have revealed many problems in practical applications. On the one hand, their light distribution uniformity is poor. In large-area display scenarios, the brightness difference between the edge and center areas of the light guide plate is obvious, causing uneven brightness in the displayed image, which seriously affects the visual experience. For example, in large LCD screens, this non-uniformity can cause the loss of image details and reduced color reproduction.

[0003] Therefore, a light guide plate type optical module is proposed to address the above problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a light guide plate type optical module to solve the problems mentioned in the background art.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A light guide plate type optical module includes an outer frame 1 and a light guide plate body 11. The light guide plate body 11 is installed inside the outer frame 1. An anti-glare film 15 is adhered to one side of the light guide plate body 11. A microstructured light-diffusing plate 16 is adhered to the side of the anti-glare film 15 away from the light guide plate body 11. A composite coating 14 is coated on the side of the light guide plate body 11 away from the anti-glare film 15.

[0009] Furthermore, one side of the light guide plate body 11 has a wave-shaped structure with a wavelength of 0.3mm-0.6mm and a wave height of 0.17mm-0.35mm.

[0010] Furthermore, the composite coating 14 is made of zinc oxide.

[0011] Furthermore, the light guide plate body 11 has an installation groove 12 inside, and LED beads 13 are installed inside the installation groove 12.

[0012] Furthermore, the anti-glare film 15 is made of PMMA material.

[0013] Furthermore, the microstructured polishing plate 16 is made of PC material.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] In this solution, the wave-shaped structure of the light guide plate body and the zinc oxide composite coating form a dual optical optimization mechanism. The wave-shaped surface, through micro-scale geometric undulations, causes multiple diffuse reflections of light during propagation, breaking the directional reflection limitations of traditional planar light guide plates. Meanwhile, the zinc oxide coating, with its high refractive index, further enhances the total internal reflection efficiency of light inside the light guide plate. The synergistic effect of the two improves the uniformity of light and effectively eliminates edge dark corners and center light spots compared to traditional light guide plates. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the first disassembled structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the second disassembled structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0021] Explanation of the labels in the diagram:

[0022] 1. Outer frame; 11. Light guide plate body; 12. Mounting groove; 13. LED beads; 14. Composite coating; 15. Anti-glare film; 16. Microstructured light-dampening plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] Please see Figure 1-4 A light guide plate type optical module includes an outer frame 1 and a light guide plate body 11. The light guide plate body 11 is installed inside the outer frame 1. An anti-glare film 15 is adhered to one side of the light guide plate body 11. A microstructured light-diffusing plate 16 is adhered to the side of the anti-glare film 15 away from the light guide plate body 11. A composite coating 14 is coated on the side of the light guide plate body 11 away from the anti-glare film 15.

[0028] In this embodiment, the nested installation design of the outer frame 1 and the light guide plate body 11 forms a tight and stable mechanical connection structure. The outer frame 1 is made of high-strength engineering plastic or metal, and its inner wall is precision milled to perfectly match the contour of the light guide plate body 11. This not only effectively resists external mechanical impacts and prevents internal components from shifting due to vibration during transportation and installation, but also, through the heat dissipation fin design of the outer frame 1, assists the light guide plate body 11 in quickly dissipating the heat generated by the LED beads 13, reducing the risk of optical performance degradation caused by heat accumulation and extending the overall service life. The composite coating 14 and The composite coating 14 of zinc oxide on the back side of the light guide plate body 11, combined with the wave-shaped structure, works synergistically to construct a dual light optimization system. The high refractive index of the coating enhances the total internal reflection efficiency of light within the light guide plate. Combined with the diffuse reflection effect of the wave-shaped surface, it can uniformly disperse edge incident light across the entire light-emitting surface. Actual measurements show that, under the same light source power, this design can reduce the brightness difference between the module center and edge to within 5%, effectively solving the "edge dark corner" problem of traditional light guide plates. It is particularly suitable for the uniform illumination requirements of large-size display panels, and the synergistic protection of multi-layer film materials and optically enhanced anti-glare properties further enhance its effectiveness. The composite film solution, combining PMMA film 15 and PC microstructure light-diffusing plate 16, forms a three-level optical processing chain of "anti-reflection - diffusion - optimization." The nanoscale matte structure on the surface of PMMA anti-glare film 15 reduces ambient light reflectivity, significantly minimizing visual interference caused by specular reflection. Meanwhile, PC microstructure light-diffusing plate 16, through a micron-level prism array, directionally refracts light penetrating anti-glare film 15, eliminating residual light interference fringes and increasing light concentration by 20%, thus simultaneously enhancing the contrast and color saturation of the displayed image. This multi-layer film... The composite design of the materials not only improves visibility in strong outdoor light, but also meets the requirements of high-end indoor display devices for accurate color reproduction. The modular integration and application expansion of the outer frame 1, with its reserved standardized interface design and embedded LED mounting slot 12 in the light guide plate body 11, give the module a highly modular feature. Users can add functional components such as polarizers and filters according to different scenario needs or through the expansion slot of the outer frame 1. In addition, the replaceable design of the outer frame 1 and the film material means that the module does not need to be replaced as a whole after some parts are worn out, reducing maintenance costs by more than 40% and significantly improving the product's full life cycle value.

[0029] Example 2

[0030] Please see Figure 1-4A light guide plate type optical module, wherein one side of the light guide plate body 11 has a wave-shaped structure, the wavelength of the wave is 0.3mm-0.6mm, the wave height is 0.17mm-0.35mm, the composite coating 14 is made of zinc oxide, the light guide plate body 11 has an installation groove 12 inside, the installation groove 12 is installed with LED beads 13, the anti-glare film 15 is made of PMMA, and the microstructure light-lubricating plate 16 is made of PC.

[0031] In this embodiment, the wave-shaped structure on one side of the light guide plate body 11 has a wavelength of 0.3mm-0.6mm and a wave height of 0.17mm-0.35mm. Through precise geometric parameter design, the light propagation path can be effectively changed, so that the light can be uniformly diffused after multiple reflections inside the light guide plate, avoiding the problem of uneven local brightness and greatly improving the uniformity of light output. Compared with traditional planar light guide plates, it can improve the uniformity of light by more than 30%, providing a better light source foundation for terminal display.

[0032] The composite coating 14 is made of zinc oxide. With its excellent optical performance and physical stability, it can efficiently absorb stray light in specific wavelengths, reduce light loss and reflection interference, and improve light utilization. On the other hand, the high hardness and wear resistance of zinc oxide can effectively resist external scratches and wear, extend the service life of the light guide plate, and reduce module maintenance costs.

[0033] The mounting slot 12 inside the light guide plate body 11 is adapted to install LED beads 13. This embedded design not only optimizes the spatial layout and makes the module structure more compact, which is conducive to the miniaturization and thinning of products; but also ensures stable light transmission and reduces light decay by closely fitting the mounting slot 12 and the LED beads 13. At the same time, it effectively isolates external electromagnetic interference and improves the reliability and stability of the light source.

[0034] The anti-glare film 15 is made of PMMA material. Its special microstructure design can effectively scatter ambient incident light, transforming glaring direct light into soft diffused light, significantly reducing screen reflection and glare. It can still maintain clear visibility in strong light environments, providing users with a comfortable visual experience, and is especially suitable for strong light scenarios such as outdoor displays.

[0035] The PC material microstructure light diffuser 16 has excellent optical diffusion capabilities. Through a precise microstructure array on its surface, it can perform secondary refraction and diffusion of light, further refine the light spot, eliminate the graininess of light, and make the final emitted light more delicate and soft, thereby improving the texture and layering of the display image and meeting the stringent requirements of high-end display fields for light quality.

[0036] Working principle: The LED beads 13 are embedded in the mounting groove 12 inside the light guide plate body 11. As the core light source, they emit directional light. The light is incident vertically on the light guide plate body 11 along the side wall of the mounting groove 12. The high light transmittance material of the light guide plate, such as acrylic substrate, is used to achieve efficient internal transmission of light. The tight fit design between the mounting groove 12 and the LED beads reduces light coupling loss and ensures that the initial light energy is effectively introduced.

[0037] The wave-shaped structure on one side of the light guide plate body 11 has a wavelength of 0.3-0.6 mm and a wave height of 0.17-0.35 mm. It changes the light propagation path through the principle of geometric optics. When the light touches the wave-shaped surface, diffuse reflection and refraction occur, which disperses the originally concentrated edge incident light to the entire light guide plate plane. At the same time, the zinc oxide composite coating 14 on the back side uses its high refractive index characteristics to enhance the total internal reflection efficiency of the light and absorb stray light, further improving the uniformity of the light. After this dual treatment, the light is reflected multiple times inside the light guide plate to form a uniform surface light source output.

[0038] After light passes through the light guide plate body 11, it comes into contact with the anti-glare film 15, which is made of PMMA material. The nano-level frosted structure on the surface of the film scatters the incident light: decomposes the direct light into diffused light in multiple directions, reducing the specular reflection intensity of the light. According to actual tests, this film can reduce the ambient light reflectivity from the conventional 8% to below 3%, effectively eliminating screen reflection and glare, and is especially suitable for improving visibility in outdoor strong light environments.

[0039] The light that penetrates the anti-glare film 15 continues to reach the microstructure light-diffusing plate 16, made of PC material. The micron-level prism array on the surface of the light-diffusing plate refracts and diffuses the light in a directional manner: on the one hand, it corrects the residual light interference fringes and eliminates the graininess of the light spots; on the other hand, it improves the concentration of the light through the focusing effect, so that the brightness uniformity of the final emitted light reaches more than 95%, and the color saturation is enhanced by 20%, which meets the requirements of high-end displays for image quality detail.

[0040] The outer frame 1 not only provides mechanical support for the module, but its heat dissipation fin design also accelerates the heat dissipation of the LED beads 13, maintaining the stable operating temperature of the module. At the same time, the precise fit structure between the inner wall of the outer frame 1 and the light guide plate, through the sealing strip, prevents external dust and moisture from entering, ensuring the long-term stable operation of the optical components and indirectly guaranteeing the light transmission efficiency.

[0041] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A light guide plate type optical module comprising an outer frame (1) and a light guide plate body (11), characterized in that: The light guide plate body (11) is installed in the inside of the outer frame (1), one side of the light guide plate body (11) is bonded with an anti-glare film (15), the side of the anti-glare film (15) far from the light guide plate body (11) is bonded with a microstructure light smoothing plate (16), and the side of the light guide plate body (11) far from the anti-glare film (15) is coated with a composite coating (14).

2. The light guide plate type optical module according to claim 1, wherein: One side of the light guide plate body (11) is in a wave shape structure, the wavelength of the wave is 0.3mm-0.6mm, and the wave height is 0.17mm-0.35mm.

3. The light guide plate type optical module according to claim 2, characterized in that: The composite coating (14) is made of zinc oxide.

4. The light guide plate type optical module according to claim 1, wherein: An installation groove (12) is arranged in the inside of the light guide plate body (11), and an LED lamp bead (13) is installed in the inside of the installation groove (12).

5. A light guide plate type optical module according to claim 1, characterized in that: The anti-glare film (15) is made of PMMA.

6. The light guide plate type optical module according to claim 1, wherein: The microstructure light smoothing plate (16) is made of PC.

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