Light guide and ambient light
By designing multiple regions and transition regions on the light guide and adjusting the density and coverage area of the light guide, the problem of uneven light emission from the light guide was solved, and a uniform light emission effect was achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- YANFENG INTERNATIONAL AUTOMOTIVE TECHNOLOGY CO LTD
- Filing Date
- 2025-12-19
- Publication Date
- 2026-07-02
AI Technical Summary
The light emission effect of existing light guides is uneven, especially light guides with micron-level textures, which make it difficult to achieve a uniform light emission effect.
Design a light guide with multiple regions arranged sequentially along the light guiding direction. Each region has a textured structure, and the textured structure changes sequentially along the light guiding direction. By setting transition areas between adjacent regions and adjusting the density or coverage area of the light guide, ensure that the luminous brightness of each region is basically the same.
This achieves a more uniform light emission effect by setting transition areas between multiple regions of the light guide and adjusting the density or coverage area of the light guide to ensure a smooth transition and uniform distribution of light brightness.
Smart Images
Figure CN2025143888_02072026_PF_FP_ABST
Abstract
Description
Light guide and ambient lighting Technical Field
[0001] This application relates to the field of light guide technology, and more specifically, to a light guide and ambient light. Background Technology
[0002] A light guide is a structural component that directs light emitted from a light source to the location where light needs to be emitted. This component is generally made of PC or PMMA material and has good light guiding performance.
[0003] Some existing light guides eliminate light spots by setting micron-level textures on the surface of the light guide and reflecting the light emitted by the light source to the target area. However, the light emission effect of the light guides with micron-level textures is not good at present, and there is an urgent need for a light guide that can make the light emission effect more uniform.
[0004] Application content
[0005] The purpose of this application includes, for example, providing a light guide that enables more uniform light emission.
[0006] The purpose of this application also includes providing an ambient light that can make the light emission effect more uniform.
[0007] The embodiments of this application can be implemented as follows:
[0008] In a first aspect, embodiments of this application provide a light guide having a light-inlet end and an end opposite to the light-inlet end. The light guide is provided with a plurality of regions in sequence along the light-guiding direction, and each region is provided with a texture structure. The texture structure of the plurality of regions changes sequentially along the light-guiding direction. The light-guiding direction is the direction from the light-inlet end toward the end.
[0009] Optionally, the light guide has a transition region between any two adjacent regions, and each transition region has the same texture structure as the two regions adjacent to it.
[0010] Optionally, each of the transition regions includes a first sub-region and a second sub-region, wherein the texture structure within the first sub-region is the same as the texture structure within one of the two adjacent regions, and the texture structure within the second sub-region is the same as the texture structure within the other of the two adjacent regions.
[0011] Optionally, within the transition region, there are multiple first sub-regions and multiple second sub-regions, and the first sub-regions and the second sub-regions are alternately arranged along the light guiding direction and / or the circumference of the light guide.
[0012] Optionally, each region is provided with a plurality of light guides, which are spaced apart and form the texture structure.
[0013] Optionally, along the light guiding direction, the density of the light guiding portions in the plurality of regions gradually increases, and / or the area of the coverage surface of the light guiding portions in the plurality of regions gradually increases; wherein, the coverage surface is the projection of the light guiding portion perpendicular to the light guiding surface.
[0014] Optionally, along the light guiding direction, the density of the light guiding portion and / or the area of the covering surface in a single region are consistent.
[0015] Optionally, along the light guiding direction, the density of the light guiding portion and / or the area of the covering surface in a single region gradually increases.
[0016] Optionally, the light guide portion is formed by a portion of the surface of the light guide protruding outward; or, the light guide portion is formed by a portion of the surface of the light guide being recessed inward.
[0017] Optionally, the distance between two adjacent light guides in each region is not exactly equal.
[0018] Optionally, the plurality of light guides in each region are arranged in a regular hexagonal pattern.
[0019] Optionally, the light guide is hemispherical in shape, and the diameter of the covering surface of the light guide is 71-200 μm; or, the light guide is pyramidal in shape, and the maximum distance between any two points on the edge of the covering surface of the light guide is 71-200 μm.
[0020] Optionally, the height or depth of the light guide portion in the direction perpendicular to the light guide surface is 17-31 μm, and the spacing between two adjacent light guide portions is 180-220 μm.
[0021] Secondly, this application also provides an ambient light, including the aforementioned light guide.
[0022] The beneficial effects of the light guide and ambient light provided in this application embodiment include, for example, in order to make the light emission effect more uniform, a light guide is designed, which has a light-inlet end and an end opposite to the light-inlet end. The light guide is provided with multiple regions in sequence along the light guiding direction, and each region is provided with a texture structure. The texture structure of the multiple regions changes in sequence along the light guiding direction so that the light emission brightness of the multiple regions is basically the same. When the light emission brightness of the multiple regions is basically the same, the overall light emission effect of the light guide is more uniform. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 is a schematic diagram of the overall structure of the optical guide in an embodiment of this application;
[0025] Figure 2 is a partial structural schematic diagram of the optical guide in an embodiment of this application;
[0026] Figure 3 is a schematic diagram illustrating one arrangement of the light guide in an embodiment of this application;
[0027] Figure 4 is a schematic diagram illustrating the first transmission path of light in the light guide in an embodiment of this application;
[0028] Figure 5 is a schematic diagram illustrating a second transmission path of light in an optical guide in an embodiment of this application;
[0029] Figure 6 is a partial cross-sectional view of the first type of optical guide in the embodiments of this application;
[0030] Figure 7 is a partial cross-sectional view of the second type of optical guide in the embodiments of this application;
[0031] Figure 8 is a partial cross-sectional view of the third type of optical guide in the embodiments of this application;
[0032] Figure 9 is a partial cross-sectional view of the fourth type of optical guide in the embodiments of this application;
[0033] Figure 10 is a schematic diagram of light rays in the light guide projected onto the imaging surface from a first perspective in an embodiment of this application;
[0034] Figure 11 shows the imaging effect of the imaging surface in Figure 10;
[0035] Figure 12 is a schematic diagram of light rays in the light guide projected onto the imaging surface from a second perspective in an embodiment of this application;
[0036] Figure 13 shows the imaging effect of the imaging surface in Figure 12;
[0037] Figure 14 is a schematic diagram of ambient lighting applied to a car in an embodiment of this application.
[0038] Icons: 10-Ambient light; 100-Light guide; 110-Light inlet; 120-End; 130-Area; 131-First area; 132-Second area; 133-Third area; 140-Transition area; 141-First sub-area; 142-Second sub-area; 150-Texture structure; 151-Light guide; 1511-Coverage surface; 152-First texture structure; 153-Second texture structure; 154-Third texture structure; 160-Light emitting surface; 200-Imaging surface. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0042] In the description of this application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in, it is only for the convenience of describing this application and simplifying the description, and does 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 application.
[0043] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0044] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0045] As disclosed in the background art, some existing light guides have micron-level textures on their surface to make the light emission effect more uniform. The light guide with micron-level textures reflects the light emitted by the light source to the target area to eliminate light spots. However, the light emission effect of the current light guide is not good, and there is an urgent need for a light guide that can make the light emission effect more uniform.
[0046] Please refer to Figures 1 and 2. An embodiment of this application provides a light guide 100, which has a light-inlet end 110 and an end end 120 disposed opposite to the light-inlet end 110. The light guide 100 is provided with a plurality of regions 130 in sequence along the light guiding direction. Each region 130 is provided with a texture structure 150. The texture structure 150 of the plurality of regions 130 changes sequentially along the light guiding direction. The light guiding direction is the direction from the light-inlet end 110 toward the end end 120.
[0047] The light guide 100 is columnar. The light-inlet end 110 of the light guide 100 is used to connect with the light source to receive the light emitted by the light source. The light emitted by the light source enters the light guide 100 through the light-inlet end 110 and is transmitted towards the end end 120. One side surface of the light guide 100 is the light-emitting surface 160. Multiple regions 130 are located on the surface of the light guide 100 opposite to the light-emitting surface 160. The light entering the light guide 100 through the light-inlet end 110 will undergo total internal reflection between the surfaces of the light guide 100 and be guided from the light-inlet end 110 towards the end end 120. When some light passes through the texture structure 150 of the multiple regions 130, the total internal reflection is destroyed and then emitted through the light-emitting surface 160.
[0048] It should be noted that the energy of light will attenuate during the transmission of light along the light guide direction. Therefore, in order to ensure that the brightness of the light emitted through the light-emitting surface 160 is basically the same, multiple regions 130 are arranged sequentially along the light guide direction, and the texture structure 150 of the multiple regions 130 arranged sequentially is set to change sequentially along the light guide direction, so that the light emission brightness of the light-emitting surface 160 corresponding to the multiple regions 130 is basically the same, thereby making the light emission effect of the light guide 100 more uniform.
[0049] Regarding the light-emitting principle of the light guide 100, assuming the number of regions 130 is n, the arrangement order of multiple regions 130 along the light guiding direction is from 1 to n, the area of any region 130 is Sn, the energy per unit area of any region 130 is Ln, and the energy distribution coefficient of light reaching any region 130 is ηn, then the luminous brightness of any region 130 is ηn*Sn*Ln. To ensure that the luminous brightness of multiple regions 130 is basically the same, the luminous brightness of any region 130, i.e., the value of ηn*Sn*Ln, needs to be within a reasonable deviation range of a certain reference value, which can be determined according to actual needs.
[0050] For example, the light guide 100 has three regions 130 arranged sequentially along the light guiding direction. The areas of the three regions 130 are S1, S2, and S3, respectively. The energy per unit area of the three regions 130 is L1, L2, and L3, respectively. The energy distribution coefficients of the light reaching the three regions 130 are η1, η2, and η3, respectively. Then, the luminous brightness of the three regions 130 is η1*S1*L1, η2*S2*L2, and η3*S3*L3, respectively. To ensure that the luminous brightness of the three regions 130 is basically the same, it is only necessary to control the deviations of the three values of η1*S1*L1, η2*S2*L2, and η3*S3*L3 from the reference value to be within a reasonable range.
[0051] In some embodiments, the light guide 100 provides a transition region 140 between any two adjacent regions 130, and each transition region 140 is provided with the same texture structure 150 as the texture structure 150 in the two adjacent regions 130.
[0052] When light passes through the texture structure 150 of each transition region 140, it is also emitted by the light-emitting surface 160. Since the texture structure 150 of each transition region 140 includes the same texture structure 150 as the texture structure 150 in the two adjacent regions 130, the light emission brightness of the transition region 140 is between the light emission brightness of the two adjacent regions 130. The setting of the transition region 140 can achieve a smooth transition of light emission brightness between the two adjacent regions 130, further improving the uniformity of light emission of the light guide 100.
[0053] For example, the light guide 100 is provided with three regions 130 in sequence along the light guiding direction, namely a first region 131, a second region 132, and a third region 133. The texture structures 150 in the first region 131, the second region 132, and the third region 133 are respectively a first texture structure 152, a second texture structure 153, and a third texture structure 154, which change sequentially. A transition region 140 is provided between the first region 131 and the second region 132. The texture structure 150 of the transition region 140 includes the same texture structure as the first texture structure 152 and the same texture structure as the second texture structure 153. A transition region 140 is provided between the second region 132 and the third region 133. The texture structure 150 of the transition region 140 includes the same texture structure as the second texture structure 153 and the same texture structure as the third texture structure 154.
[0054] Understandably, the number of Zone 130s can be determined based on actual needs. For example, there can be more than three Zone 130s, and there is no limit to this.
[0055] In some embodiments, each transition region 140 includes a first sub-region 141 and a second sub-region 142, wherein the texture structure 150 in the first sub-region 141 is the same as the texture structure 150 in one of the two adjacent regions 130, and the texture structure 150 in the second sub-region 142 is the same as the texture structure 150 in the other of the two adjacent regions 130.
[0056] Since the texture structure 150 in the first sub-region 141 is the same as the texture structure 150 in one of the two adjacent regions 130, and the texture structure 150 in the second sub-region 142 is the same as the texture structure 150 in the other of the two adjacent regions 130, the luminous brightness of the transition region 140 is controlled between the luminous brightness of the two adjacent regions 130, thus achieving a smooth transition of luminous brightness between the two adjacent regions 130.
[0057] Regarding the light-emitting principle of the light guide 100, along the light-guiding direction, if the luminance of one region 130 is ηn*Sn*Ln, and the luminance of the region 130 before that region 130 is η(n-1)*S(n-1)*L(n-1), then the luminance of the first sub-region 141 and the second sub-region 142 are ηn*Sn*Ln and η(n-1)*S(n-1)*L(n-1) respectively, so that the luminance of the entire transition region 140 is controlled between the luminances of the two adjacent regions 130.
[0058] For example, the light guide 100 has three regions 130 arranged sequentially along the direction from the light-inlet end 110 to the end end 120. The luminous brightness of the three regions 130 is η1*S1*L1, η2*S2*L2, and η3*S3*L3, respectively. In the transition region 140 between the first region 130 and the second region 130, the luminous brightness of the first sub-region 141 and the second sub-region 142 is η1*S1*L1 and η2*S2*L2, respectively. In the transition region 140 between the second region 130 and the third region 130, the luminous brightness of the first sub-region 141 and the second sub-region 142 is η2*S2*L2 and η3*S3*L3, respectively.
[0059] In some alternative embodiments, the first sub-region 141 and the second sub-region 142 are arranged circumferentially along the light guide 100.
[0060] It should be noted that the light guide 100 is columnar, and the circumferential direction of the light guide 100 is the direction surrounding the surface of the light guide 100; the first sub-region 141 and the second sub-region 142 are arranged continuously along the circumferential direction of the light guide 100, that is, the edge of the first sub-region 141 near the center of region 130 coincides with the edge of the second sub-region 142 near the center of region 130.
[0061] In some optional embodiments, within the transition region 140, there are multiple first sub-regions 141 and second sub-regions 142, and the first sub-regions 141 and second sub-regions 142 are alternately arranged along the light guiding direction and / or the circumference of the light guide 100.
[0062] When there are multiple first sub-regions 141 and multiple second sub-regions 142, multiple first sub-regions 141 and multiple second sub-regions 142 are alternately arranged along the light guiding direction, and / or, multiple first sub-regions 141 and multiple second sub-regions 142 are alternately arranged along the circumference of the light guide 100.
[0063] For example, when there are two first sub-regions 141 and two second sub-regions 142, the two first sub-regions 141 and the two second sub-regions 142 are arranged in a grid pattern, that is, the first sub-regions 141 and the second sub-regions 142 are arranged sequentially along the light guide direction, and the first sub-regions 141 and the second sub-regions 142 are arranged sequentially along the circumference of the light guide 100.
[0064] It is understood that in other embodiments, the number of the first sub-region 141 and the second sub-region 142 is not limited to two, but may be three or more.
[0065] In some other optional embodiments, the projections of the first sub-region 141 and the second sub-region 142 on the direction perpendicular to the surface of the light guide 100 are both triangular. The two triangular regions presented by the first sub-region 141 and the second sub-region 142 are spliced together to form a rectangular region. In the direction from the light-inlet end 110 to the end end 120, the edge of the first region 130 near the edge of the second region 130 coincides with the edge of the first sub-region 141, and the edge of the second region 130 near the edge of the first region 130 coincides with the edge of the second sub-region 142.
[0066] It is understandable that the first sub-region 141 and the second sub-region 142 can also be presented in other arrangements, as long as the luminous brightness of the entire transition region 140 where the first sub-region 141 and the second sub-region 142 are located is controlled between the luminous brightness of the two adjacent regions 130.
[0067] Please refer to Figure 3. In some embodiments, each region 130 is provided with a plurality of light guides 151, which are spaced apart and form a texture structure 150. By adjusting the number or size of the light guides 151 in each region 130, the texture structure 150 in the multiple regions 130 changes sequentially along the light guiding direction.
[0068] Along the light guiding direction, the density of the light guiding portions 151 in the multiple regions 130 gradually increases, and / or the area of the covering surface 1511 of the light guiding portions 151 in the multiple regions 130 gradually increases; wherein, the covering surface 1511 is the projection of the light guiding portion 151 perpendicular to the surface of the light guide 100.
[0069] Since light energy attenuates during transmission along the light-guiding direction, in order to ensure that the brightness of the light emitted from the light-emitting surface 160 is basically the same, the texture structure 150 of the multiple regions 130 arranged sequentially is set to change sequentially along the light-guiding direction. Specifically, this includes: the density of the light-guiding parts 151 in the multiple regions 130 gradually increasing; or, the area of the coverage surface 1511 of the light-guiding parts 151 in the multiple regions 130 gradually increasing; or, the density of the light-guiding parts 151 in the multiple regions 130 gradually increasing, and the area of the coverage surface 1511 of the light-guiding parts 151 in the multiple regions 130 gradually increasing. By designing the texture structure 150 of the multiple regions 130 to change sequentially along the light-guiding direction, the luminous brightness of the multiple regions 130 remains basically the same.
[0070] It should be noted that the density of light guides 151 arranged in multiple regions 130 gradually increases, that is, the number of light guides 151 per unit area in multiple regions 130 gradually increases.
[0071] In some embodiments, the density of the light guide portion 151 and / or the area of the coverage surface 1511 of a single region 130 are consistent along the light guide direction.
[0072] By gradually increasing the density of the light guide portion 151 and / or the area of the coverage surface 1511 in multiple regions 130, the luminous brightness of the multiple regions 130 remains essentially the same. However, for a single region 130, the density of the light guide portion 151 or the area of the coverage surface 1511 in the single region 130 can be consistent, that is, the density of the light guide portion 151 or the area of the coverage surface 1511 in the single region 130 can remain unchanged.
[0073] In other embodiments, the density of the light guide portion 151 and / or the area of the coverage surface 1511 of a single region 130 gradually increases along the light guide direction.
[0074] Similar to how the density of the light guide portion 151 and / or the area of the coverage surface 1511 of multiple regions 130 are gradually increased, the density of the light guide portion 151 or the area of the coverage surface 1511 of a single region 130 can also be gradually increased, so that the density of the light guide portion 151 or the area of the coverage surface 1511 gradually changes along the light guiding direction.
[0075] In some embodiments, the texture structure 150 includes multiple sets of light guides distributed continuously, each set of light guides including multiple light guides 151, and the multiple light guides 151 in each set of light guides are arranged in a polygonal pattern; wherein, two adjacent sets of light guides share a portion of the light guide 151, thereby realizing the continuous distribution of multiple sets of light guides.
[0076] The multiple light guides 151 in each group of light guides are arranged in a polygonal pattern, that is, the multiple light guides 151 in each group of light guides form a polygon. By setting up multiple groups of light guides in a continuous distribution and arranging the multiple light guides 151 in each group of light guides in a polygonal pattern, the light guides 151 in each region 130 are arranged in an orderly manner, thereby improving the uniformity of light emission in each region 130.
[0077] In some embodiments, the multiple light guides 151 within each region 130 are arranged in a regular quadrilateral pattern, that is, the number of light guides 151 in each group of light guides is four, and the four light guides 151 are arranged in a regular quadrilateral pattern. When the four light guides 151 in each group of light guides form a regular quadrilateral, the light guides 151 in each region 130 are arranged in a rectangular pattern.
[0078] In other embodiments, the multiple light guides 151 within each region 130 are arranged in a regular hexagonal pattern, meaning that there are six light guides 151 in each group, and these six light guides 151 are arranged in a regular hexagonal pattern. When the six light guides 151 in each group form a regular hexagon, the extension direction of one side of this regular hexagon is consistent with the direction from the light-inlet end 110 to the end end 120. The arrangement of the light guides 151 in a regular hexagonal pattern, compared to a regular square pattern, can effectively avoid the problem of light column patterns when the light guide 100 emits light, resulting in a more uniform overall light emission effect.
[0079] Please refer to Figures 4 and 5. In some embodiments, the light guide portion 151 is formed by a portion of the surface of the light guide 100 protruding outward; or, the light guide portion 151 is formed by a portion of the surface of the light guide 100 being recessed inward.
[0080] When each light guide portion 151 is formed by a portion of the surface of the light guide 100 protruding outwards, the light emitted from the light source has a relatively long transmission path after entering the light guide 100, and the overall luminous brightness of the light guide 100 is highly consistent. When each light guide portion 151 is formed by a portion of the surface of the light guide 100 concave inwards, the light guide 100 can obtain more energy over a short distance (usually less than 400mm), the light emitted from the light source has a relatively short transmission path after entering the light guide 100, and the luminous brightness of the front section of the light guide 100 is higher than that of the rear section of the light guide 100.
[0081] Understandably, whether the light guide portion 151 is designed to be formed by a portion of the surface of the light guide 100 protruding outwards or by a portion of the surface of the light guide 100 being recessed inwards depends on the actual light emission requirements of the light guide 100 in the application process. For example, if a high consistency in the overall light emission brightness of the light guide 100 is required, then the light guide portion 151 is designed to be formed by a portion of the surface of the light guide 100 protruding outwards. Conversely, if a higher light emission brightness is required at the front end of the light guide 100 compared to the rear end, then the light guide portion 151 is designed to be formed by a portion of the surface of the light guide 100 being recessed inwards.
[0082] In some embodiments, the distance between two adjacent light guide portions 151 in each region 130 is not exactly equal. For example, the distance between two adjacent light guide portions 151 is not exactly equal along the light guiding direction, and / or, the distance between two adjacent light guide portions 151 is not exactly equal along the circumferential direction of the light guide 100.
[0083] Taking the arrangement of multiple light guides 151 in a regular hexagon within each region 130 as an example, if the regular hexagon formed by the multiple light guides 151 has two sides parallel to the light guiding direction, then along the light guiding direction, the distance between any light guide 151 and its two adjacent light guides 151 is not equal. It can be understood that if the regular hexagon formed by the multiple light guides 151 has two sides extending circumferentially along the light guide 100, then along the circumferential direction of the light guide 100, the distance between any light guide 151 and its two adjacent light guides 151 is not equal.
[0084] In some embodiments, the light guide portion 151 is hemispherical in shape, and the diameter of the covering surface 1511 of the light guide portion 151 is 71-200 μm.
[0085] It should be noted that when the light guide part 151 is hemispherical, the covering surface 1511 of the light guide part 151 is circular, and the diameter of the covering surface 1511 of the light guide part 151 is 71-200μm.
[0086] In order to ensure that the brightness of the light emitted from the light-emitting surface 160 in each region 130 is basically the same, the diameter of the coverage surface 1511 of the light guide part 151 in multiple regions 130 gradually increases in the light guiding direction.
[0087] When the light guide portion 151 is hemispherical, the diameter of the covering surface 1511 of the light guide portion 151 is 71μm, 90μm, 120μm, 150μm, 180μm or 200μm.
[0088] It is understandable that when the light guide 151 is hemispherical, the diameter of the coverage surface 1511 of the light guide 151 can be selected within the above range according to actual needs, and there is no limitation thereto.
[0089] As shown in Figure 6, the light guide part 151 is hemispherical in shape, and the light guide part 151 is formed by the outward protrusion of a portion of the surface of the light guide 100; as shown in Figure 7, the light guide part 151 is hemispherical in shape, and the light guide part 151 is formed by the inward concavity of a portion of the surface of the light guide 100. When the light passes through the hemispherical light guide part 151, it can obtain a larger emission angle.
[0090] In other embodiments, the light guide portion 151 is pyramidal in shape, and the maximum distance between any two points on the edge of the covering surface 1511 of the light guide portion 151 is 71-200 μm.
[0091] It should be noted that when the light guide part 151 is pyramidal in shape, the covering surface 1511 of the light guide part 151 is polygonal, and the maximum distance between any two points on the edge of the covering surface 1511 of the light guide part 151 is 71-200μm.
[0092] In order to ensure that the brightness of the light emitted from the light-emitting surface 160 in each region 130 is basically the same, the maximum distance between any two points on the edge of the coverage surface 1511 of the light guide part 151 in multiple regions 130 gradually increases in the light guiding direction.
[0093] When the light guide portion 151 is pyramidal in shape, the maximum distance between any two points on the edge of the covering surface 1511 of the light guide portion 151 is 71μm, 90μm, 120μm, 150μm, 180μm or 200μm.
[0094] It is understandable that when the light guide 151 is pyramidal in shape, the maximum distance between any two points on the edge of the coverage surface 1511 of the light guide 151 can be selected within the above range according to actual needs, and there is no limitation on this.
[0095] For example, when the light guide portion 151 is shaped like a triangular pyramid, the maximum distance between any two points on the edge of the covering surface 1511 of the light guide portion 151 is the maximum distance between any two vertices on the edge of the covering surface 1511 of the light guide portion 151; when the light guide portion 151 is shaped like a square pyramid, the maximum distance between any two points on the edge of the covering surface 1511 of the light guide portion 151 is the maximum distance between two opposite sides on the edge of the covering surface 1511 of the light guide portion 151.
[0096] As shown in Figure 8, the light guide 151 is pyramidal in shape, and the light guide 151 is formed by the outward protrusion of a portion of the surface of the light guide 100; as shown in Figure 9, the light guide 151 is pyramidal in shape, and the light guide 151 is formed by the inward concavity of a portion of the surface of the light guide 100, so that the beam angle can be narrowed when the light passes through the pyramidal light guide 151.
[0097] In some other embodiments, the shape of the light guide 151 may also be prism, frustum, cuboid, cone, etc. It is understood that the shape of the light guide 151 can be determined according to actual needs and is not limited thereto.
[0098] In some embodiments, the height or depth of each light guide portion 151 in the direction perpendicular to the surface of the light guide 100 is 17-31 μm, and / or the spacing between two adjacent light guide portions 151 is 180-220 μm.
[0099] It should be noted that if each light guide portion 151 is formed by a portion of the surface of the light guide 100 protruding outward, then the height of each light guide portion 151 in the direction perpendicular to the surface of the light guide 100 is 17-31 μm; if each light guide portion 151 is formed by a portion of the surface of the light guide 100 recessed inward, then the depth of each light guide portion 151 in the direction perpendicular to the surface of the light guide 100 is 17-31 μm.
[0100] As the density of light guides 151 disposed in multiple regions 130 gradually increases, and / or the area of the coverage surface 1511 of light guides 151 disposed in multiple regions 130 gradually increases, the spacing between two adjacent light guides 151 in multiple regions 130 gradually decreases, thereby gradually improving the luminous efficiency of multiple regions 130.
[0101] For example, when each light guide portion 151 is formed by a portion of the surface of the light guide 100 protruding outward, the height of each light guide portion 151 in the direction perpendicular to the surface of the light guide 100 is 17μm, 20μm, 24μm, 28μm or 31μm; when each light guide portion 151 is formed by a portion of the surface of the light guide 100 recessing inward, the depth of each light guide portion 151 in the direction perpendicular to the surface of the light guide 100 is 17μm, 20μm, 24μm, 28μm or 31μm; the spacing between two adjacent light guide portions 151 is 180μm, 190μm, 200μm, 210μm or 220μm.
[0102] It is understood that the height or depth of each light guide 151 in the direction perpendicular to the surface of the light guide 100, as well as the spacing between two adjacent light guides 151, can be selected within the above range according to actual needs, and there is no limitation thereto.
[0103] As shown in Figures 10-13, Figure 10 is a schematic diagram of light rays in the light guide 100 projected onto the external imaging surface 200 from a first perspective; Figure 11 is an imaging effect diagram of the imaging surface 200 corresponding to Figure 10; Figure 12 is a schematic diagram of light rays in the light guide 100 projected onto the external imaging surface 200 from a second perspective; and Figure 13 is an imaging effect diagram of the imaging surface 200 corresponding to Figure 12.
[0104] After the light emitted by the light source enters the light guide 100, it is reflected by the texture structure 150 set in each region 130, and then emitted by the light-emitting surface 160 and projected onto the external imaging surface 200. The bright areas on the imaging surface 200 in Figures 11 and 13 are continuously distributed, with basically no dark areas, and the overall imaging effect is better.
[0105] An embodiment of this application also provides an ambient light 10, including the light guide 100 described above. The ambient light 10 may further include a light source and a lamp holder, both of which are fixed to the lamp holder, and the light emitted by the light source enters through the light input end 110 of the light guide 100.
[0106] It should be noted that the ambient light 10 of this application can be applied to automobiles, airplanes or ships, as shown in Figure 14. When the ambient light 10 is applied to an automobile, it can be installed on the center console, door panels and other components of the automobile to provide passengers with a rich atmosphere experience.
[0107] The beneficial effects of the light guide 100 and ambient light 10 provided in the embodiments of this application include at least the following: by sequentially setting multiple regions 130 along the light guiding direction, and setting the texture structure 150 of the sequentially arranged multiple regions 130 to change sequentially along the light guiding direction, the luminous brightness of the multiple regions 130 is basically the same, thereby making the luminous effect of the light guide 100 more uniform; by setting a transition region 140 between any two adjacent regions 130, since the texture structure 150 of each transition region 140 includes the same texture structure as the texture structure 150 in the two adjacent regions 130, the transition region 140... The luminance of 0 is between the luminance of two adjacent regions 130. The setting of the transition region 140 enables a smooth transition of luminance between the two adjacent regions 130, further improving the uniformity of light emission of the light guide 100. By limiting the density of the light guide parts 151 set in multiple regions 130 to gradually increase, and / or the area of the coverage surface 1511 of the light guide parts 151 set in multiple regions 130 to gradually increase, the energy attenuation that occurs during the transmission of light along the light inlet end 110 to the end end 120 of the light guide 100 is overcome, thereby ensuring that the brightness of the light emitted through the light outlet surface 160 is basically the same.
[0108] In summary, this application provides a light guide 100 and an ambient light 10. In order to ensure that the brightness of the light emitted through the light-emitting surface 160 is basically the same, multiple regions 130 are arranged sequentially along the light guide direction, and the texture structure 150 of the multiple regions 130 arranged sequentially is set to change sequentially along the light guide direction, so that the luminous brightness of the multiple regions 130 is basically the same, thereby making the luminous effect of the light guide 100 more uniform.
[0109] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An optical guide, characterized in that, The light guide (100) has a light-inlet end (110) and an end end (120) disposed opposite to the light-inlet end (110). The light guide (100) is provided with a plurality of regions (130) in sequence along the light guiding direction. Each region (130) is provided with a texture structure (150). The texture structure (150) of the plurality of regions (130) changes sequentially along the light guiding direction. The light guiding direction is the direction from the light-inlet end (110) toward the end end (120).
2. The optical guide according to claim 1, characterized in that, The light guide (100) has a transition region (140) between any two adjacent regions (130), and each transition region (140) has the same texture structure (150) as the texture structure (150) in the two adjacent regions (130).
3. The optical guide according to claim 2, characterized in that, Each of the transition regions (140) includes a first sub-region (141) and a second sub-region (142), wherein the texture structure (150) in the first sub-region (141) is the same as the texture structure (150) in one of the two adjacent regions (130), and the texture structure (150) in the second sub-region (142) is the same as the texture structure (150) in the other of the two adjacent regions (130).
4. The optical guide according to claim 3, characterized in that, Within the transition region (140), there are multiple first sub-regions (141) and second sub-regions (142), and the first sub-regions (141) and second sub-regions (142) are alternately arranged along the light guiding direction and / or the circumference of the light guide (100).
5. The optical guide according to claim 1, characterized in that, Each region (130) is provided with a plurality of light guides (151), which are spaced apart from each other, and the plurality of light guides (151) form the texture structure (150).
6. The optical guide according to claim 5, characterized in that, Along the light guiding direction, the density of the light guiding portions (151) in the plurality of regions (130) gradually increases; and / or, Along the light guiding direction, the area of the covering surface (1511) of the light guiding part (151) of the plurality of regions (130) gradually increases; wherein, the covering surface (1511) is the projection of the light guiding part (151) perpendicular to the surface of the light guide (100).
7. The optical guide according to claim 6, characterized in that, Along the light guiding direction, the density of the light guiding portion (151) and / or the area of the covering surface (1511) of a single region (130) are consistent.
8. The optical guide according to claim 6, characterized in that, Along the light guiding direction, the density of the light guiding portion (151) and / or the area of the covering surface (1511) of a single region (130) gradually increases.
9. The optical guide according to claim 5, characterized in that, The light guide portion (151) is formed by a portion of the surface of the light guide (100) protruding outward; or, The light guide portion (151) is formed by a portion of the surface of the light guide (100) being recessed inward.
10. The optical guide according to claim 5, characterized in that, The distance between two adjacent light guides (151) in each region (130) is not exactly equal.
11. The optical guide according to claim 5, characterized in that, The plurality of light guides (151) within each region (130) are arranged in a regular hexagonal pattern.
12. The optical guide according to claim 5, characterized in that, The light guide (151) is hemispherical in shape, and the diameter of the covering surface (1511) of the light guide (151) is 71-200 μm; or, The light guide (151) is pyramidal in shape, and the maximum distance between any two points on the edge of the covering surface (1511) of the light guide (151) is 71-200μm. The covering surface (1511) is the projection of the light guide part (151) perpendicular to the surface of the light guide (100).
13. The optical guide according to claim 5, characterized in that, The height or depth of the light guide portion (151) in the direction perpendicular to the surface of the light guide (100) is 17-31 μm.
14. The optical guide according to claim 5, characterized in that, The spacing between two adjacent light guides (151) is 180-220 μm.
15. An atmosphere lamp characterized by comprising: Includes the optical guide (100) as described in any one of claims 1-14.