Scatterer light guide cover
By designing concave textures, PVD silver layers, and matte black coatings on the main body of the light guide, the problems of energy loss and uneven brightness of traditional light guide materials are solved, achieving a more uniform light distribution and richer light spot effects.
Patent Information
- Application Number
- CN202610579328.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-29
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional light guide materials have high absorption rates for specific wavelengths of light, leading to energy loss. Inappropriate microstructure design can cause light to be concentrated or lost, resulting in uneven brightness of the light-emitting surface. Surface roughness issues also affect the efficiency of direct light transmission.
The light guide design employs a scatterer, including a light guide body with a first, second, and third concave pattern. It uses injection-grade polycarbonate material and has a PVD semi-transparent dark silver layer and a matte black coating on the bottom surface. Combined with structures such as U-shaped grooves and cut surfaces, it controls the light distribution through multiple refractions and reflections.
It improves the transparency and uniformity of light, reduces stray light interference, avoids glare, and enhances the uniformity of light output and rainbow-like iridescent effects.
Smart Images
Figure CN122191493A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lighting fixtures, and in particular to a light guide cover for scattering bodies. Background Technology
[0002] Traditional light guide materials (such as PC and PMMA) have high absorption rates for specific wavelengths of light, resulting in energy loss during light transmission. When the internal microstructure of the light guide (such as dots and prisms) is not designed properly, light can easily concentrate or be missing in certain areas, leading to uneven brightness on the light-emitting surface. Excessive surface roughness of the light guide can cause diffuse reflection and reduce the efficiency of direct light transmission; while excessive roughness may lead to failure of the critical angle of total internal reflection and light leakage. Therefore, a scattering body light guide is proposed. Summary of the Invention
[0003] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.
[0004] A scattering light guide cover includes a light guide cover body. The light guide cover body is provided with a first concave texture, a second concave texture, and a third concave texture, which are sequentially arranged and formed on the upper part of the light guide cover body. The first concave texture, the second concave texture, and the third concave texture are respectively recessed downwards. The light guide cover body is formed of injection-molded polycarbonate material. The bottom surface of the light guide cover body is arched upwards, and the bottom surface of the light guide cover body is coated with a PVD semi-transparent dark silver layer. The PVD semi-transparent dark silver layer is at the same horizontal plane as the bottom surface of the light guide cover body. The light guide cover body is coated with a matte black coating, which is located on both sides below the light guide cover body and is at the same horizontal plane as the bottom end of the light guide cover body.
[0005] Preferably, the light guide cover body is provided with an arched groove, and the arched groove is located on both sides below the light guide cover body, and the arched groove arches upward.
[0006] Preferably, the light guide cover body has a U-shaped groove formed on its front side, and the U-shaped groove is recessed into the light guide cover body, and both sides of the U-shaped groove are formed with a first inclined surface.
[0007] Preferably, the light guide cover body is formed with multiple cut surfaces, and the multiple cut surfaces are obliquely distributed on the side of the surface of the light guide cover body.
[0008] Preferably, the light guide cover body is formed with a second inclined surface, and the second inclined surface is obliquely located on both sides below the light guide cover body. The second inclined surface is connected to multiple cut surfaces, and the connection between the second inclined surface and multiple cut surfaces forms multiple edges.
[0009] Preferably, the method further includes a fabrication process for preparing the light guide cover body, the fabrication process of the light guide cover body including the following steps:
[0010] S1. Based on actual processing requirements, design mold drawings for the main body of the light guide cover, and at the same time prepare injection-grade polycarbonate material for manufacturing the main body of the light guide cover.
[0011] S2. The mold design drawings in S1 are processed and assembled to form a mold, which is used to form the main body of the light guide cover;
[0012] S3. The injection-grade polycarbonate material that makes up the main body of the light guide cover is hot-melted and injected into the mold, and then injection molded through the mold to form the main body of the light guide cover;
[0013] S4. After the mold in S3 is injection molded to form the main body of the light guide cover, it is then annealed to allow the plastic molecules to obtain enough energy to rearrange and relax, thereby eliminating or reducing internal stress.
[0014] S5. The light guide cover body formed by injection molding in S4 is transferred to the CNC machining position for CNC machining, and the first concave texture, the second concave texture and the third concave texture are engraved, and multiple cutting surfaces, the first bevel and the second bevel are cut. The light guide cover body is then ground and polished.
[0015] S6. Perform an appearance inspection on the light guide cover body 1 after grinding and polishing in S5. After the inspection is completed and the light guide cover body is a good product, apply a PVD semi-transparent dark silver layer to the good light guide cover body, so that the PVD semi-transparent dark silver layer is applied to the lower side of the light guide cover body.
[0016] S7. Apply a matte black coating to the light guide cover body after applying the PVD semi-transparent dark silver layer in S6, so that the matte black coating is applied to the lower side of the light guide cover body.
[0017] S8. Inspect the light guide cover body that has been coated with PVD semi-transparent dark silver layer and matte black coating in S7, and package it after inspection.
[0018] Preferably, the annealing temperature in S4 is 85 degrees Celsius for 2 hours.
[0019] Compared with the prior art, the beneficial effects of the present invention are: the material thickness can be reduced by the first concave texture, the second concave texture and the third concave texture, making light easier to penetrate; at the same time, the transparency is enhanced by the refraction of the first concave texture, the second concave texture and the third concave texture, making the light guide cover body look lighter and more transparent.
[0020] The reflectivity of light can be adjusted by using a PVD semi-transparent dark silver layer to reduce stray light interference while maintaining the semi-transparent properties to allow some light to pass through.
[0021] The matte black coating disperses light, significantly reducing surface reflectivity and preventing glare when strong light shines directly on the light guide cover.
[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of the light guide cover for the scatterer;
[0025] Figure 2 This is another schematic diagram of the structure of the light guide cover for the scatterer;
[0026] Figure 3 This is another structural schematic diagram of the light guide cover for the scatterer;
[0027] Figure 4 This is a schematic diagram of the cross-section of the light guide cover for the scatterer.
[0028] The figure shows: 1. Light guide cover body, 2. Cut surface, 3. U-shaped groove, 4. First concave texture, 5. Second concave texture, 6. Third concave texture, 7. First bevel, 8. Arch groove, 9. PVD semi-transparent dark silver layer, 10. Matte black coating, 11. Second bevel. Detailed Implementation
[0029] 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.
[0030] Please see Figure 1-4In this embodiment of the invention, the scattering light guide cover includes a light guide cover body 1. The light guide cover body 1 is provided with a first concave texture 4, a second concave texture 5, and a third concave texture 6, which are sequentially arranged and formed on the upper part of the light guide cover body 1. The first concave texture 4, the second concave texture 5, and the third concave texture 6 are respectively recessed downwards. The light guide cover body 1 is formed of injection-molded polycarbonate material. The first concave texture 4, the second concave texture 5, and the third concave texture 6 can reduce the material thickness, making light easier to penetrate. Simultaneously, the refraction of the first concave texture 4, the second concave texture 5, and the third concave texture 6 enhances the transparency, making the light guide cover body 1 appear lighter and more transparent. The bottom surface of the light guide cover 1 is arched upwards, and a PVD semi-transparent dark silver layer 9 is coated on the bottom surface of the light guide cover 1. The PVD semi-transparent dark silver layer 9 is at the same level as the bottom surface of the light guide cover 1. The PVD semi-transparent dark silver layer 9 can adjust the reflectivity of light, reduce stray light interference, and maintain the semi-transparent characteristic to allow some light to pass through. The light guide cover 1 is coated with a matte black coating 10, and the matte black coating 10 is located on both sides below the light guide cover 1. The matte black coating 10 is at the same level as the bottom of the light guide cover 1. The matte black coating 10 disperses light, significantly reduces surface reflectivity, and avoids glare generated when strong light shines directly on the light guide cover 1.
[0031] The light guide cover body 1 is provided with an arched groove 8, which is located on both sides below the light guide cover body 1 and arches upward.
[0032] The light guide cover body 1 has a U-shaped groove 3 formed on its front side, and the U-shaped groove 3 is recessed into the light guide cover body 1. Both sides of the U-shaped groove 3 are obliquely formed with first inclined surfaces 7, so that when light shines into the U-shaped groove 3, the first inclined surfaces 7 control the light scattering angle, avoid light concentration or dark areas, and make the overall lighting more uniform. The light is reflected and refracted multiple times between the cut surfaces, which can be decomposed into light of different wavelengths, producing a rainbow-like iridescent effect.
[0033] The light guide cover body 1 is formed with multiple cut surfaces 2, and the multiple cut surfaces 2 are obliquely distributed on the side of the surface of the light guide cover body 1. The multiple cut surfaces 2 cause light to be refracted when it enters the light guide cover body 1, changing the propagation direction, focusing the light, and forming a local bright area. The cut surfaces can adjust the internal mass distribution of the light guide cover body 1, making its center of gravity more stable and reducing tilting or shaking caused by the shift of the center of gravity.
[0034] The light guide cover body 1 is formed with a second inclined surface 11, and the second inclined surface 11 is located obliquely on both sides below the light guide cover body 1. The second inclined surface 11 is connected to multiple cut surfaces 2, and the connection between the second inclined surface 11 and multiple cut surfaces 2 forms multiple edges, so that when light shines on the light guide cover body 1, it undergoes multiple refractions, decomposing a single light source into multiple beams of light, forming a richer light spot distribution.
[0035] It also includes a fabrication process for preparing the light guide cover body 1, comprising the following steps:
[0036] S1. Based on actual processing requirements, design mold drawings for the light guide cover body 1, and at the same time prepare injection-grade polycarbonate material for manufacturing the light guide cover body 1.
[0037] S2. The mold design drawings in S1 are processed and assembled to form a mold, which is used to form the light guide cover body 1;
[0038] S3. The injection-grade polycarbonate material constituting the light guide cover body 1 is hot-melted and injected into the mold, and then injection molded through the mold to form the light guide cover body 1;
[0039] S4. After injection molding the mold in S3 to form the main body 1 of the light guide cover, annealing is performed to allow the plastic molecules to obtain sufficient energy for rearrangement and relaxation, thereby eliminating or reducing internal stress.
[0040] S5. The light guide cover body 1 formed by injection molding in S4 is transferred to the CNC machining position for CNC machining, and the first concave texture 4, the second concave texture 5 and the third concave texture 6 are engraved and the multiple cutting surfaces 2, the first inclined surface 7 and the second inclined surface 11 are cut, and the light guide cover body 1 is ground and polished.
[0041] S6. Perform an appearance inspection on the light guide cover body 1 after grinding and polishing in S5. When the inspection is completed and the light guide cover body 1 is a good product, apply a PVD semi-transparent dark silver layer 9 to the good product light guide cover body 1 so that the PVD semi-transparent dark silver layer 9 is applied to the lower side of the light guide cover body 1.
[0042] S7. Apply a matte black coating 10 to the light guide body 1 after applying the PVD semi-transparent dark silver layer 9 in S6, so that the matte black coating 10 is applied to the lower side of the light guide body 1.
[0043] S8. Inspect the light guide body 1, which has been coated with PVD semi-transparent dark silver layer 9 and matte black coating layer 10 in S7, and package it after inspection.
[0044] The annealing temperature in S4 is 85 degrees Celsius for 1 hour.
[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.
Claims
1. A diffuser light guide cover comprising a light guide cover body, characterized in that, The light guide cover body is provided with a first concave texture, a second concave texture, and a third concave texture, which are arranged sequentially on the upper part of the light guide cover body. The first concave texture, the second concave texture, and the third concave texture are respectively recessed downwards. The light guide cover body is formed of injection-molded polycarbonate material. The bottom surface of the light guide cover body is arched upwards, and the bottom surface of the light guide cover body is coated with a PVD semi-transparent dark silver layer. The PVD semi-transparent dark silver layer is at the same level as the bottom surface of the light guide cover body. The light guide cover body is coated with a matte black coating, which is located on both sides below the light guide cover body and is at the same level as the bottom of the light guide cover body.
2. The scatterer light guide cover according to claim 1, characterized in that, The light guide cover body is provided with an arched groove, which is located on both sides below the light guide cover body and arches upward.
3. The scatterer light guide cover according to claim 1, characterized in that, The light guide cover body has a U-shaped groove formed on its front side, and the U-shaped groove is recessed into the light guide cover body. Furthermore, the inside of the U-shaped groove has a first inclined surface formed on both sides.
4. The scatterer light guide cover according to claim 1, characterized in that, The light guide cover body is formed with multiple cut surfaces, and the multiple cut surfaces are obliquely distributed on the side of the surface of the light guide cover body.
5. The scatterer light guide cover according to claim 4, characterized in that, The light guide cover body is formed with a second inclined surface, and the second inclined surface is located obliquely on both sides below the light guide cover body. The second inclined surface is connected to multiple cut surfaces, and the connection between the second inclined surface and multiple cut surfaces forms multiple edges.
6. The scatterer light guide cover according to claim 1, characterized in that, It also includes a fabrication process for preparing the light guide cover body, the fabrication process of the light guide cover body including the following steps: S1. Based on actual processing requirements, design mold drawings for the main body of the light guide cover, and at the same time prepare injection-grade polycarbonate material for manufacturing the main body of the light guide cover. S2. The mold design drawings in S1 are processed and assembled to form a mold, which is used to form the main body of the light guide cover; S3. The injection-grade polycarbonate material that makes up the main body of the light guide cover is hot-melted and injected into the mold, and then injection molded through the mold to form the main body of the light guide cover; S4. After the mold in S3 is injection molded to form the main body of the light guide cover, it is then annealed to allow the plastic molecules to obtain enough energy to rearrange and relax, thereby eliminating or reducing internal stress. S5. The light guide cover body formed by injection molding in S4 is transferred to the CNC machining position for CNC machining, and the first concave texture, the second concave texture and the third concave texture are engraved, and multiple cutting surfaces, the first bevel and the second bevel are cut. The light guide cover body is then ground and polished. S6. Perform an appearance inspection on the light guide cover body 1 after grinding and polishing in S5. After the inspection is completed and the light guide cover body is a good product, apply a PVD semi-transparent dark silver layer to the good light guide cover body, so that the PVD semi-transparent dark silver layer is applied to the lower side of the light guide cover body. S7. Apply a matte black coating to the light guide cover body after applying the PVD semi-transparent dark silver layer in S6, so that the matte black coating is applied to the lower side of the light guide cover body. S8. Inspect the light guide cover body that has been coated with PVD semi-transparent dark silver layer and matte black coating in S7, and package it after inspection.
7. The scatterer light guide cover according to claim 6, characterized in that, The annealing temperature in S4 is 85 degrees Celsius for 2 hours.