Light guide with weakened bright-dark boundary
By designing a wavy or polygonal light-out surface on the light guide surface and using the folded surface and arc-surface connection, the problem of light-dark dividing lines in traditional light guide products is solved, and the uniform scattering and cost control of light are achieved.
Patent Information
- Application Number
- CN202421260377.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-04
AI Technical Summary
Traditional light guide products will have light and dark dividing lines when designing indirect light, affecting the distribution and illumination effect of light, and existing solutions such as adding lens parts will increase costs.
By optimizing the design on the light guide surface, the light-out surface is composed of multiple folded surfaces and/or arc surfaces in the circumferential direction, forming a wavy or polygonal light-out surface to effectively scatter light and weaken the light-dark dividing line.
Without increasing costs, the irradiation defects are optimized, the bright and dark dividing lines are effectively weakened, the uniformity of the light guide is improved, and the irradiation defects caused by the mold parting lines are optimized.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of light guides, in particular to a light guide with a weakened boundary between light and dark. Background Art
[0002] In the light guide products currently on the market, light is totally reflected and propagated inside the traditional light guide 9, and the light is reflected by the light guide teeth 91 to achieve the effect of lighting. Figure 1 As shown; however, when the traditional light guide 9 product is designed as an indirect light, a bright and dark dividing line will appear, such as Figure 2 As shown in the figure, the light-dark dividing line affects the distribution of light on the illuminated surface, resulting in poor illumination and affecting the customer's visual experience. The usual solution to this problem is to add a lens component to the front end of the light guide and scatter the light through the lens component, but adding components will increase costs a lot.
[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. Utility Model Content
[0004] In order to solve at least one of the technical problems existing in the prior art, the utility model provides an optimized design on the light guide surface, changes the light emission direction of the light guide, effectively scatters the light when it is emitted, and achieves the effect of weakening the bright and dark dividing line. The specific technical solution is as follows:
[0005] The utility model provides a light guide with weakened light-dark boundary, which comprises a light conductor;
[0006] The optical conductor is an elongated optical conductor, and is provided with a light emitting surface, which is located on the surface of the optical conductor along the length direction, and is composed of a plurality of folded surfaces and / or arc surfaces connected in the circumferential direction.
[0007] As a preferred solution of the utility model, the light emitting surface is formed by connecting a plurality of folded surfaces along the circumferential direction; or
[0008] The light-emitting surface is composed of a plurality of arc surfaces connected along the circumferential direction; or
[0009] The light-emitting surface is composed of a plurality of folded surfaces and curved surfaces connected in a mixed manner along the circumferential direction.
[0010] As a preferred solution of the present invention, the optical conductor is a columnar optical conductor.
[0011] As a preferred solution of the utility model, the side of the surface of the light conductor opposite to the light emitting surface is the first surface, and the first surface is a plane or a curved surface.
[0012] As a preferred solution of the utility model, a boss is provided on the side of the surface of the light conductor opposite to the light emitting surface, and the first surface is located on the boss.
[0013] As a preferred solution of the utility model, light guide teeth are arranged on the first surface.
[0014] As a preferred solution of the utility model, it also includes a light source, which is arranged at the end of the optical conductor along the length direction.
[0015] As a preferred solution of the utility model, the angle of the circumscribed arc of the light emitting surface does not exceed 180 degrees.
[0016] Compared with the prior art, the technical solution described in the utility model has at least one or more of the following beneficial effects:
[0017] Directly optimizing the wavy and polygonal light-emitting surface of the light guide avoids the cost increase caused by adding additional parts, and can optimize the irradiation defects without increasing the cost.
[0018] This design can not only effectively weaken the bright-dark boundary, but also improve the uniformity of the light guide.
[0019] In addition, when light guide products are being manufactured, some products will have mold parting lines on the surface of the light guide products due to mold parts. After the light is emitted from the light guide, the mold parting lines will also be reflected on the irradiated surface. The technical solution of this patent can also optimize the irradiation defects caused by the mold parting lines.
[0020] The light-emitting surface of the light guide is set to a wavy or broken polygon, which disrupts the originally uniform light and forms messy light. When these messy light rays are irradiated to the irradiated surface, there will be no obvious light-dark dividing line.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 This is a schematic diagram of the main structure of a traditional light guide;
[0024] Figure 2 yes Figure 1 A schematic diagram of a radial cross-sectional structure of a conventional light guide;
[0025] Figure 3is a schematic diagram of a radial cross-sectional structure of an example of the light guide of the utility model;
[0026] Figure 4 is a schematic diagram of a radial cross-sectional structure of another example of the light guide of the utility model;
[0027] Figure 5 is a schematic diagram of a radial cross-sectional structure of another example of the light guide of the utility model;
[0028] Figure 6 It is a schematic diagram of a radial cross-sectional structure of another example of the light guide of the utility model.
[0029] Among them, 1-light conductor, 11-light emitting surface, 111-folding surface, 112-arc surface, 12-first surface, 13-boss, 2-irradiated surface, 9-traditional light guide, 91-traditional light guide tooth, 92-light guide edge. DETAILED DESCRIPTION
[0030] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.
[0031] In the description of the present utility model, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "provided with", "equipped with", "connected", "installed with", "set", "opened", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.
[0034] Please refer to Figure 3-6 It should be noted that the direction of the light guide length is Figure 3-6 The direction perpendicular to the paper surface. Figure 3-6 As shown, the utility model provides a light guide with weakened light-dark boundary, which is preferably suitable for automotive interior ambient lighting, but of course the patent is not limited to this.
[0035] The light guide comprises a light conductor 1; the light conductor 1 is an elongated light conductor, and is provided with a light emitting surface 11, which is located on the surface of the light conductor 1 along the length direction, and is composed of a plurality of folded surfaces 111 and / or curved surfaces 112 connected in the circumferential direction.
[0036] Directly optimizing the wavy and polygonal light-emitting surface of the light guide avoids the cost increase caused by adding additional parts, and can optimize the irradiation defects without increasing the cost.
[0037] This design can not only effectively weaken the bright-dark boundary, but also improve the uniformity of the light guide.
[0038] In addition, when light guide products are being manufactured, some products will have mold parting lines on the surface of the light guide products due to mold parts. After the light is emitted from the light guide, the mold parting lines will also be reflected on the irradiated surface. The technical solution of this patent can also optimize the irradiation defects caused by the mold parting lines.
[0039] In the example, the folding surface 111 is a plane.
[0040] In a preferred example, Figure 6 As shown, the light emitting surface 11 is composed of a plurality of folded surfaces 111 connected along the circumferential direction.
[0041] In a preferred example, Figure 3-5As shown, the light emitting surface 11 is composed of a plurality of arc surfaces 112 connected in the circumferential direction. In other examples, the light emitting surface 11 can also be composed of a plurality of folded surfaces 111 and arc surfaces 112 mixedly connected in the circumferential direction. Specifically, the light emitting surface 11 is composed of a folded surface 111 and an arc surface 112 interlaced in sequence in the circumferential direction, or at least one folded surface 111 is interlaced with at least one arc surface 112. This patent does not impose any restrictions on this, and it is based on the fact that after passing through the light guide, a chaotic light is formed, and there is no obvious light-dark dividing line when the light is irradiated to the irradiated surface 2.
[0042] In a preferred example, the angle of the circumscribed arc of the light emitting surface 11 does not exceed 180 degrees.
[0043] In a preferred embodiment, the optical waveguide 1 is a cylindrical optical waveguide.
[0044] Preferably, the surface of the light conductor 1 opposite to the light emitting surface 11 is the first surface 12 .
[0045] Further preferably, the first surface 12 is a plane or a curved surface. In the example, the curved surface is a convex curved surface.
[0046] In one example, the first surface 12 is a curved surface. Figure 4 As shown, the optical waveguide 1 is an approximately cylindrical optical waveguide.
[0047] An example, such as Figure 3 As shown, the first surface 12 is a plane.
[0048] An example, such as Figure 5 As shown, a boss 13 is provided on the side of the surface of the light conductor 1 opposite to the light emitting surface 11, and the first surface 12 is located on the boss 13. In the example, the first surface 12 located on the boss is a plane.
[0049] The light-emitting surface of the light guide is set to a wavy or broken polygon, which disrupts the originally uniform light and forms messy light. When these messy light rays are irradiated to the irradiated surface, there will be no obvious light-dark dividing line.
[0050] Further preferably, light guide teeth are provided on the first surface 12 .
[0051] In a preferred embodiment, a light source (not shown in the figure) is further included, and the light source is arranged at the end of the light conductor 1 along the length direction. In this embodiment, the light source is arranged at one end of the light conductor 1 along the length direction. Of course, light sources can be arranged at both ends of the light conductor 1 along the length direction, and this patent does not limit this.
[0052] It should be noted that, in the absence of conflict, the above embodiments or all features in the embodiments described herein may be arbitrarily combined.
[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "yet another embodiment", "another embodiment", "other embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.
Claims
1. A light guide with weakened light-dark boundary, characterized in that: It comprises a light conductor (1); The optical conductor (1) is an elongated optical conductor, and is provided with a light emitting surface (11). The light emitting surface (11) is located on the surface of the optical conductor (1) along the length direction, and the light emitting surface (11) is formed by connecting a plurality of folded surfaces (111) and / or curved surfaces (112) along the circumferential direction.
2. The light guide with weakened light-dark boundary according to claim 1, characterized in that: The light emitting surface (11) is formed by connecting a plurality of folded surfaces (111) along the circumferential direction; or The light emitting surface (11) is composed of a plurality of arc surfaces (112) connected in a circumferential direction; or The light-emitting surface (11) is composed of a plurality of folded surfaces (111) and curved surfaces (112) connected in a mixed manner along the circumferential direction.
3. The light guide with weakened bright-dark boundary according to claim 1, characterized in that: The optical conductor (1) is a cylindrical optical conductor.
4. The light guide with weakened bright-dark boundary according to any one of claims 1 to 3, characterized in that: The side of the surface of the light conductor (1) opposite to the light emitting surface (11) is a first surface (12), and the first surface (12) is a plane or a curved surface.
5. The light guide with weakened light-dark boundary according to claim 4, characterized in that: A convex platform (13) is provided on the side of the surface of the light conductor (1) opposite to the light emitting surface (11), and the first surface (12) is located on the convex platform (13).
6. The light guide with weakened bright-dark boundary according to claim 4, characterized in that: The first surface (12) is provided with light guide teeth; and / or The arc surface is an outwardly convex arc surface.
7. The light guide with weakened bright-dark boundary according to claim 1, characterized in that: It also comprises a light source, which is arranged at the end of the optical conductor (1) along the length direction.
8. The light guide with weakened bright-dark boundary according to claim 1, characterized in that: The included angle of the circumscribed arc of the light emitting surface (11) does not exceed 180 degrees.