Optical plate capable of selectively transmitting specific spectrum
By plating selective transmission and reflective layers on the optical sheet, the problem that existing optical sheets cannot screen the spectrum is solved, and the contrast and vision protection are improved, which is suitable for a variety of lighting applications.
Patent Information
- Application Number
- CN202420915131.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-29
AI Technical Summary
Existing optical sheets cannot screen the exit spectrum, resulting in a decrease in vision in a blue-ray-rich environment, and there is almost no difference in spectral transmission and reflection of conventional optical sheets.
Design an optical sheet with a selective transmission of a specific spectrum, and use a selective urge film and a selective reflective film by plating a selective transmissive layer on one side of the light guide plate body and a selective reflective film on the other side. Filter the spectra of the specified band, reduces reflected light and increases transmitted light, and increases contrast.
Selective filtering of the spectrum is achieved, reducing the output of blue light, reducing vision loss, improving light transmittance and contrast, and is suitable for various lighting designs.
Smart Images
Figure CN222354084U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of light guide plates, in particular to an optical plate capable of selectively transmitting a specific spectrum. Background Art
[0002] Optical plates are also called light guide plates. In the past, conventional optical plastics were used for direct pressing. This makes the spectrum entering the plate and the spectrum emitted from the plate almost the same, and it is impossible to screen the spectrum of the emitted light. In most white light sources at this stage, the blue light band accounts for a large proportion of the entire light source spectrum, which makes the spectrum emitted by lamps made of conventional optical plates also have a relatively high content of blue light. Blue light has a great stimulating effect on vision. Living in an environment with a blue light spectrum for a long time will significantly reduce vision.
[0003] Therefore, it is necessary to develop an optical plate that can selectively transmit the light spectrum. Utility Model Content
[0004] In order to overcome the defects of the prior art, the utility model provides an optical plate that can selectively transmit a specific spectrum, aiming to solve the above-mentioned problems.
[0005] The technical solution adopted by the utility model to solve its technical problem is: an optical plate that can selectively transmit a specific spectrum, including a light guide plate body, one side surface of the light guide plate body is covered with a selective transmission layer, and the other side surface is covered with a selective reflection layer, the selective transmission layer is a selective anti-reflection film, and the selective reflection layer is a selective reflection film.
[0006] Furthermore, one side of the light guide plate body is set as a first plane layer, and the other side is set as a second plane layer, the selective transmission layer covers the first plane layer, and the selective reflection layer covers the second plane layer.
[0007] Furthermore, a first wave layer is provided on one side of the light guide plate body, the first wave layer includes a plurality of convex surfaces, two adjacent convex surfaces are connected by a connecting surface, the plurality of convex surfaces are raised relative to the surface of the light guide plate body, and the selective transmission layer covers the first wave layer.
[0008] Specifically, a second wave layer is provided on the other side of the light guide plate body, the second wave layer is in a convex state relative to the surface of the light guide plate body, and the selective reflection layer covers the second wave layer.
[0009] Specifically, a third wave layer is provided on the other side of the light guide plate body, and the third wave layer includes a plurality of concave surfaces opened on the light guide plate body, and two adjacent concave surfaces are non-connected, and the inner walls of the plurality of concave surfaces are covered with a selective reflection layer.
[0010] Specifically, a third plane layer is disposed on the other side of the light guide plate body, and the selective reflection layer is covered on the third plane layer.
[0011] The beneficial effect of the utility model is that, by coating one surface of the light guide plate body with a selective transmission layer and the other surface with a selective reflection layer, after light containing multiple spectrums enters the light guide plate body, the spectrum of the specified band can be selectively filtered, and the spectrum band that is expected to be emitted can be emitted to the maximum extent, thereby forming spectral selectivity. Among them, the selective anti-reflection film can increase the transmittance of light by reducing the reflection of light, and at the same time improve the contrast by reducing scattered light. When the light is reflected twice on the selective anti-reflection film, it will interfere with the original reflected light, thereby weakening the reflected light. According to the law of conservation of energy, the energy of light remains unchanged, so when the reflected light decreases, the transmitted light increases. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic structural diagram of embodiment 1 of an optical plate.
[0013] Figure 2 This is a schematic structural diagram of Example 2 of an optical plate.
[0014] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.
[0015] Figure 4 This is a schematic structural diagram of Example 3 of an optical plate.
[0016] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point B in the middle.
[0017] Figure 6 This is a schematic structural diagram of Example 4 of an optical plate.
[0018] In the figure: light guide plate body 1, first plane layer 2, second plane layer 3, first wave layer 4, second wave layer 5, convex surface 6, connecting surface 7, third wave layer 8, concave surface 9, third plane layer 10. DETAILED DESCRIPTION
[0019] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0020] Embodiment 1
[0021] like Figure 1 An optical plate material that can selectively transmit a specific spectrum is shown, comprising a light guide plate body 1, one side of the surface of the light guide plate body 1 is coated with a selective transmission layer, and the other side of the surface is coated with a selective reflection layer, the selective transmission layer is a selective anti-reflection film, and the selective reflection layer is a selective reflection film; in this embodiment, by coating a selective transmission layer on one surface of the light guide plate body 1 and a selective reflection layer on the other side of the surface, after light containing multiple spectrums enters the light guide plate body 1, the spectrum of the specified band can be selectively filtered, and the spectrum band that is expected to be emitted can be emitted to the maximum extent, thereby forming spectral selectivity, wherein the selective anti-reflection film can increase the transmittance of light by reducing the reflection of light, and at the same time improve the contrast by reducing scattered light, when the light is reflected twice on the selective anti-reflection film, it will interfere with the original reflected light, thereby weakening the reflected light. According to the law of conservation of energy, the energy of light remains unchanged, so when the reflected light decreases, the transmitted light increases.
[0022] It is worth noting that the selective anti-reflection film of this embodiment can be made of aluminum oxide, calcium fluoride, magnesium fluoride, magnesium oxide, silicon dioxide or lanthanum fluoride, and the selective reflective film can be made of silicon oxide or titanium oxide to reduce light loss efficiency by using its high reflectivity.
[0023] In some embodiments, the selective reflection layer may also be coated with an absorption film. By using absorption films of different materials or optical structures, light in a specific band is absorbed by the film material, and the non-absorbed band is reflected and output to achieve a selective spectrum.
[0024] In this embodiment, one side of the light guide plate body 1 is set as a first plane layer 2, and the other side is set as a second plane layer 3. The selective transmission layer is covered on the first plane layer 2, and the selective reflection layer is covered on the second plane layer 3. Reflection or transmission is performed in a plane form, so that the light-emitting surface of the light guide plate body 1 is more uniform.
[0025] This embodiment can screen the required spectrum and is extremely effective in the design of lighting fixtures. Conventional light sources can be used to achieve specific spectrum lighting, and harmful spectra can be eliminated in lighting design. The application range is very wide, such as educational lighting, medical lighting, atmosphere lighting, etc.
[0026] Embodiment 2
[0027] like Figure 2 and Figure 3 As shown, the difference between the second embodiment and the first embodiment is that a first wave layer 4 is provided on one side of the light guide plate body 1, the first wave layer 4 includes a plurality of convex surfaces 6, two adjacent convex surfaces 6 are connected by a connecting surface 7, the plurality of convex surfaces 6 are in a convex state relative to the surface of the light guide plate body 1, and the selective transmission layer covers the first wave layer 4; a second wave layer 5 is provided on the other side of the light guide plate body 1, the second wave layer 5 is in a convex state relative to the surface of the light guide plate body 1, and the selective reflection layer covers the second wave layer 5.
[0028] A first wave layer 4 and a second wave layer 5 are respectively arranged on both surfaces of the light guide plate body 1, wherein the structure of the second wave layer 5 is the same as that of the first wave layer 4, and the only difference is that the films covering the surface are different, so that when the second wave layer 5 reflects light through the internal groove, the light can be better converged, and when the converged light reaches the first wave layer 4, it is output through the form of a lens, so that the light output by the selective transmission layer is brighter and more concentrated.
[0029] Embodiment 3
[0030] like Figure 4 and Figure 5 As shown, the difference between the third embodiment and the second embodiment is that a first wave layer 4 is provided on one side of the light guide plate body 1, the first wave layer 4 includes a plurality of convex surfaces 6, two adjacent convex surfaces 6 are connected by a connecting surface 7, the plurality of convex surfaces 6 are in a convex state relative to the surface of the light guide plate body 1, and the selective transmission layer covers the first wave layer 4; a third wave layer 8 is provided on the other side of the light guide plate body 1, the third wave layer 8 includes a plurality of concave surfaces 9 opened on the light guide plate body 1, two adjacent concave surfaces are in a non-connected state, and the inner walls of the plurality of concave surfaces 9 are covered with a selective reflection layer.
[0031] By covering the concave surface 9 with a selective reflection layer, the light entering the light guide plate body 1 is reflected on the convex surface, which can better scatter and diverge the light. When the light reaches the first wave layer 4, it is output through the form of a lens, making the light output by the selective transmission layer brighter and more concentrated.
[0032] Embodiment 4
[0033] like Figure 6As shown, the difference between the fourth embodiment and the second embodiment is that a first wave layer 4 is provided on one side of the light guide plate body 1, the first wave layer 4 includes a plurality of convex surfaces 6, two adjacent convex surfaces 6 are connected by a connecting surface 7, the plurality of convex surfaces 6 are in a convex state relative to the surface of the light guide plate body 1, and the selective transmission layer is covered on the first wave layer 4; a third planar layer 10 is provided on the other side of the light guide plate body 1, and the selective reflection layer is covered on the third planar layer 10.
[0034] By covering the third planar layer 10 with a selective reflection layer, the light entering the light guide plate body 1 is reflected on the plane, so that the light can reach the first wave layer 4 evenly and be output through the form of a lens, making the light output by the selective transmission layer more uniform.
[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.
Claims
1. An optical plate capable of selectively transmitting a specific spectrum, comprising a light guide plate body (1), characterized in that: One side surface of the light guide plate body (1) is covered with a selective transmission layer, and the other side surface is covered with a selective reflection layer. The selective transmission layer is a selective anti-reflection film, and the selective reflection layer is a selective reflection film.
2. The optical plate capable of selectively transmitting a specific spectrum according to claim 1, characterized in that: One side of the light guide plate body (1) is provided as a first plane layer (2), and the other side is provided as a second plane layer (3); the selective transmission layer covers the first plane layer (2), and the selective reflection layer covers the second plane layer (3).
3. The optical plate capable of selectively transmitting a specific spectrum according to claim 1, characterized in that: A first wave layer (4) is provided on one side of the light guide plate body (1), the first wave layer (4) comprises a plurality of convex surfaces (6), two adjacent convex surfaces (6) are connected via a connecting surface (7), the plurality of convex surfaces (6) are in a convex state relative to the surface of the light guide plate body (1), and the selective transmission layer covers the first wave layer (4).
4. The optical plate capable of selectively transmitting a specific spectrum according to claim 3, characterized in that: A second wave layer (5) is provided on the other side of the light guide plate body (1); the second wave layer (5) is in a convex state relative to the surface of the light guide plate body (1); and the selective reflection layer covers the second wave layer (5).
5. The optical plate capable of selectively transmitting a specific spectrum according to claim 3, characterized in that: A third wave layer (8) is provided on the other side of the light guide plate body (1), and the third wave layer (8) comprises a plurality of concave surfaces (9) opened on the light guide plate body (1), two adjacent concave surfaces are non-connected, and the inner walls of the plurality of concave surfaces (9) are covered with a selective reflection layer.
6. The optical plate capable of selectively transmitting a specific spectrum according to claim 3, characterized in that: A third plane layer (10) is arranged on the other side of the light guide plate body (1), and the selective reflection layer is arranged on the third plane layer (10) in a covering manner.