Light incidence structure, vehicle window, vehicle window panel, vehicle window panel assembly, and vehicle

Abstract

The present application relates to a light ray incident structure, a car window, a car window panel, a car window panel assembly, and a vehicle. The light ray incident structure is configured to conduct light rays into an optical waveguide medium layer (2), the optical waveguide medium layer (2) having at least a first main surface (201) on which the light rays are incident, the light ray incident structure includes a light guide medium (1) and a light emitting source (3), at least a portion of the light guide medium (1) is cured and formed on the first main surface (201) of the optical waveguide medium layer (2) so that at least a portion of the light guide medium (1) becomes part of the optical waveguide medium layer (2), the light guide medium (1) has at least one incident surface (101) on which the light rays are incident, the light rays emitted from the light emitting source (3) enter the light guide medium (1) through the incident surface (101), the light rays are refracted by the light guide medium (1) and then enter the optical waveguide medium layer (2) from the first main surface (201). The present invention can solve the technical problems such as the complicated light incidence structure of the vehicle window and the low light incidence efficiency.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure claims priority to a Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 7, 2022, bearing application number 202211561724.4 and entitled "Light Incident Structure, Car Window and Vehicle," and to a Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on January 9, 2023, bearing application number 202310025008.2 and entitled "Car Window Panel, Car Window Panel Assembly and Vehicle," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of car window products, and in particular to light entrance structures, car windows, car window panels, car window panel assemblies, and vehicles. [Background technology]

[0003] At present, as shown in FIG. 1, a light emitting source 20 is typically attached to a glass 10 of a vehicle window, and light rays enter the glass 10 from the edge face of the glass 10 (for example, the edge of the glass, a cut face, or the edge face at the position where a hole is drilled in a part of the glass), and the light rays propagate within the glass 10 (i.e., the optical waveguide medium layer), thereby realizing illumination inside the vehicle or achieving the effect of improving the ambient atmosphere inside the vehicle.

[0004] In the related art, a light guide block is fixed to the surface of an optical waveguide layer by a first adhesive layer, and light rays from a light emitting source are incident on the light guide block, reflected by the light guide block, and then incident on the optical waveguide layer, where the light rays are totally reflected and propagate through the optical waveguide layer. To improve the light guiding effect, a complex optical structure (e.g., multiple sets of asymmetric prisms with sizes in the millimeter or micrometer range, each set of asymmetric prisms arranged in a three-dimensional array or linear manner) needs to be installed between the light guide block and the surface of the optical waveguide layer to help the light rays enter the optical waveguide layer. This not only makes it difficult to manufacture and install, but also occupies part of the space of the optical waveguide layer, affecting the luminous effect of the optical waveguide layer. In addition, the structure of the light guide block has limited application range (for example, it cannot be attached to curved glass), the manufacturing process is difficult, and the stability of the product cannot be guaranteed. The light guide block needs to be adjusted to the light emission angle of the light source, and the light rays cannot enter the optical waveguide medium layer unless they pass through the light guide block and the first adhesive layer, which results in light loss, reduces the light incidence efficiency, and reduces the use effect of the product.

[0005] The light incidence structure of the vehicle window in the related art is complicated, and the light incidence efficiency is low. To date, no effective solution has been proposed.

[0006] Therefore, based on the experience and practice gained in the related industry over many years, the applicant proposes a light incidence structure, a car window and a vehicle, aiming to overcome the deficiencies of the prior art. Summary of the Invention [Problem to be solved by the invention]

[0007] According to various embodiments of the present application, a light incidence structure, a car window, a car window panel, a car window panel assembly, and a vehicle are provided. [Means for solving the problem]

[0008] To achieve the objectives of this application, the following technical solutions are provided:

[0009] The present application provides a light ray incident structure for transmitting a light ray into an optical waveguide medium layer, the optical waveguide medium layer having at least a first main surface onto which the light ray is incident, the light ray incident structure comprising: a light guiding medium, at least a portion of which is cured and formed on a first main surface of the light guiding medium layer so that at least a portion of the light guiding medium becomes part of the light guiding medium layer, the light guiding medium having at least one incident surface onto which a light ray is incident; a light emitting light source, wherein a light ray emitted from the light emitting light source enters the light guiding medium through the incident surface, and the light ray is refracted by the light guiding medium and then enters the optical waveguide medium layer from the first main surface.

[0010] In one embodiment, the light guiding medium is a protruding structure located on a first major surface of the optical waveguiding medium layer.

[0011] In one embodiment, the first major surface is a flat or curved surface.

[0012] In one embodiment, the optical waveguide layer has a second main surface opposite to the first main surface, and a light reflecting portion is provided on the second main surface, so that light rays incident on the optical waveguide layer are reflected by the light reflecting portion.

[0013] In one embodiment, the light reflecting portion is a predetermined pattern.

[0014] In one embodiment, the entrance surface is a plane, a convex lens surface, or a concave lens surface.

[0015] In one embodiment, the light guiding medium has a refractive index that is the same as or within a predetermined range of that of the light guiding medium layer.

[0016] In one embodiment, the visible light transmittance of the light guiding medium is equal to or greater than the visible light transmittance of the light guiding medium layer.

[0017] In one embodiment, the light guiding medium is integrally formed with the optical waveguiding medium layer.

[0018] In one embodiment, the light guiding medium is formed by hardening a viscous liquid on the light guiding medium layer.

[0019] In one embodiment, the light incident structure further includes a cover plate, the cover plate having a first end and a second end opposite to each other, the first end of the cover plate is connected to the optical waveguide medium layer, and the second end of the cover plate is inclined away from the optical waveguide medium layer, and the light guiding medium is located between the cover plate and the optical waveguide medium layer; The incident surface is located between the second end of the cover plate and the optical waveguide medium layer, or the incident surface is located between a position close to the second end of the cover plate and the optical waveguide medium layer.

[0020] In one embodiment, the light emitting source is located in the optical waveguide medium layer at a position close to the incident surface.

[0021] The present application provides a vehicle window comprising an optical waveguide layer, an outer glass layer, and the above-mentioned light incident structure, wherein the optical waveguide layer has a first main surface and a second main surface opposite to each other, the light incident structure is installed on the first main surface, and the outer glass layer is connected to the second main surface.

[0022] In one embodiment, the car window further includes a first adhesive layer, the first adhesive layer being bonded between the outer glass layer and the second major surface.

[0023] This application is an optical waveguide layer having a first main surface and a second main surface facing each other, the optical waveguide layer having a light reflecting pattern layer disposed on the first main surface and / or the second main surface; A light guiding medium including a first surface and a second surface arranged parallel to each other, the light guiding medium being tightly connected to the first main surface via the first surface, and a connection portion of the first main surface connected to the first surface being parallel to the first surface; a light emitting source located at one end of the light guiding medium, wherein light rays from the light emitting source are incident on the light guiding medium, and the light guiding medium guides the light rays from the light emitting source to the optical waveguide medium layer.

[0024] In one embodiment, the light guiding medium further includes a third surface and a fourth surface disposed opposite to each other, the light emitting source is disposed adjacent to the third surface, and light rays from the light emitting source enter the light guiding medium through the third surface, and the third surface and the fourth surface are respectively flat surfaces or arc surfaces.

[0025] In one embodiment, an optical blocking layer and / or a heat insulating film layer is provided on the first and / or second main surfaces of the optical waveguiding medium layer.

[0026] In one embodiment, a transparent area is provided at the connection portion of the first main surface connected to the first surface, and the transparent area is the first main surface with no additional processing applied to the connection portion.

[0027] In one embodiment, the light guiding medium and the light guide medium layer are integrally molded, or the light guiding medium and the light guide medium layer are manufactured separately and then assembled together.

[0028] In one embodiment, the light guiding medium is fixedly connected to the light guide medium layer by a hardenable liquid, the liquid being a transparent optical adhesive or an optically transparent resin, the refractive index of the liquid material being 1.45-1.65, the visible light transmittance of the liquid material being 90%-99.9%, and the haze of the liquid material being ≦5%.

[0029] In one embodiment, the light guiding medium and the light guiding medium layer use the same glass material, and / or the glass material is an inorganic glass or an organic glass.

[0030] In one embodiment, the refractive index of the light guiding medium is 1.45 to 1.65, the light transmittance of the light guiding medium is 80% to 99.9%, and the haze of the light guiding medium is ≦5%.

[0031] In one embodiment, the light guiding medium is connected to at least one side of the optical waveguide medium layer, and / or the light guiding medium is in the form of a long strip or arc strip.

[0032] In one embodiment, the light propagation distance of the optical waveguide layer is defined as b, the distance between the third surface and the fourth surface of the optical waveguide layer is defined as a, and the distance between the first surface of the optical waveguide layer and the first main surface of the optical waveguide layer is defined as h, where b=20a to 30a and a=6h to 10h.

[0033] In one embodiment, h:a:b=1:8:200.

[0034] In one embodiment, the car window panel further includes an outer glass layer, and the second main surface is connected to the outer glass layer via a first adhesive layer.

[0035] A vehicle window panel assembly includes the vehicle window panel and a cover member that covers the exterior of the light guiding medium and the light emitting source.

[0036] The present application provides a vehicle including the car window or the car window panel. As described above, the features and advantages of the light incident structure, car window and vehicle of the present application include at least the following.

[0037] The details of one or more embodiments of the present application are set forth in the drawings and description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims.

[0038] The following drawings are only for illustrative purposes of explaining and interpreting the present application, and are not intended to limit the scope of the present application. [Brief explanation of the drawings]

[0039] [Figure 1] 1 is a schematic diagram of a light incidence structure of a car window glass in the prior art; [Figure 2] 1 is a schematic diagram (part 1) of a light incidence structure according to the present application. [Figure 3] FIG. 1 is a perspective view of a light incident structure according to the present application. [Figure 4] FIG. 4 is a partial enlarged view of a portion A in FIG. 3. [Figure 5] FIG. 2 is a schematic diagram (part 2) of the light incidence structure according to the present application. [Figure 6] FIG. 1 is a schematic diagram (part 3) of a light incidence structure according to the present application. [Figure 7] FIG. 4 is a schematic diagram (part 4) of the light incidence structure according to the present application. [Figure 8] FIG. 5 is a schematic diagram (part 5) of the light incidence structure according to the present application. [Figure 9] FIG. 6 is a schematic diagram (part 6) of the light incidence structure according to the present application. [Figure 10] 1 is a schematic diagram of the structure of a vehicle window panel according to an embodiment of the present invention. [Figure 11] FIG. 4 is a structural schematic diagram of a car window panel according to another embodiment of the present invention. [Figure 12] FIG. 10 is a structural schematic diagram of a vehicle window panel according to yet another embodiment of the present invention. [Figure 13] FIG. 10 is a structural schematic diagram of a vehicle window panel according to yet another embodiment of the present invention. [Figure 14] 2 is a schematic diagram of a light propagation state within an optical waveguide medium layer in an embodiment of the present invention; FIG. [Figure 15] FIG. 11 is a top view of the structure shown in FIG. [Figure 16] FIG. 10 is a structural schematic diagram of a vehicle window panel assembly according to yet another embodiment of the present invention. [Figure 17] FIG. 10 is a structural schematic diagram of a vehicle window panel assembly according to yet another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0040] In order to more clearly understand the technical features, objects and effects of the present application, specific embodiments of the present application will be described with reference to the drawings.

[0041] Embodiment 1 As shown in FIGS. 2 to 4, the present application provides a light ray incident structure, which is configured to conduct light rays into an optical waveguide medium layer 2, the optical waveguide medium layer 2 having at least a first main surface onto which the light rays are incident, the light ray incident structure including a light guiding medium 1 and a light emitting source 3, at least a part of the light guiding medium 1 being cured and formed on the first main surface of the optical waveguide medium layer 2 so that at least a part of the light guiding medium 1 becomes part of the optical waveguide medium layer 2, the light guiding medium 1 having at least one incident surface 101 onto which the light rays are incident, the light ray emitted from the light emitting source 3 entering the light guiding medium 1 through the incident surface 101, the light ray being refracted by the light guiding medium 1 and then entering the optical waveguide medium layer 2 from the first main surface. In this application, the light guiding medium 1 is fixedly installed on the first main surface of the optical waveguide layer 2, so that the structure and molding process between the light guiding medium 1 and the optical waveguide layer 2 is simpler, on the premise of ensuring smooth propagation of light rays, and no other connecting structure is installed between the light guiding medium 1 and the optical waveguide layer 2, which greatly improves the incidence efficiency of light rays, avoids light loss, and effectively improves the lighting and ambient effects inside the vehicle.

[0042] In a preferred embodiment of the present application, as shown in FIGS. 2 to 4, the light guiding medium 1 is a protrusion structure located on the first main surface of the optical waveguide medium layer 2, and the incident surface 101 is located on one side of the protrusion structure and connected to the first main surface of the optical waveguide medium layer 2. Since the light guiding medium 1 is a protrusion structure, light rays can be refracted inside the protrusion structure, and the refracted light rays then enter the optical waveguide medium layer 2.

[0043] In the present application, the light guiding medium 1 is located on the first main surface of the optical waveguide layer 2 (i.e., the surface of the optical waveguide layer 2), so that the light beam emitted from the light emitting source 3 can be incident into the optical waveguide layer 2 through the surface of the optical waveguide layer 2. This replaces the incident method in which the light beam emitted from the light emitting source 3 is incident into the optical waveguide layer 2 from the end face or cut face of the optical waveguide layer 2 (i.e., glass), and can simplify the structure and save costs while ensuring the light beam incidence efficiency.

[0044] Furthermore, the first main surface of the optical waveguide layer 2 may be, but is not limited to, a flat or curved surface. Since the light guiding medium 1 is directly formed on the optical waveguide layer 2, there is no need to consider whether the first main surface of the optical waveguide layer 2 can be compatible with and connect to the light guiding medium 1. Even if the first main surface is flat or curved, the light guiding medium 1 can be installed on the first main surface of the optical waveguide layer 2, ensuring the efficiency of light incidence. However, before the light guiding medium 1 is formed, it is necessary to ensure that the position where the light guiding medium 1 should be installed on the optical waveguide layer 2 is a transparent area (a transparent area can be reserved according to the predetermined area of ​​the light guiding medium 1). Furthermore, installing the light guiding medium 1 in this transparent area ensures that light can pass through the light guiding medium 1 and smoothly enter the optical waveguide layer 2. The position and area of ​​the light guiding medium 1 on the first main surface of the optical waveguide layer 2 can be set according to the actual product needs and are not specifically limited herein.

[0045] In a preferred embodiment of the present application, as shown in FIG. 2, the optical waveguide layer 2 has a second main surface opposite to the first main surface, and a light reflecting portion 7 is provided on the second main surface. After entering the optical waveguide layer 2, the light is irradiated onto the light reflecting portion 7, and the light is reflected at the location where it is extracted by the light reflecting portion 7, thereby achieving lighting and ambient effects.

[0046] Furthermore, the light reflecting portion 7 may cover the second main surface of the optical waveguide layer 2, and the light reflecting portion 7 may have a preset pattern (a different pattern may be set as needed). Light rays enter the optical waveguide layer 2 and propagate through the optical waveguide layer 2. The propagated light rays are irradiated onto the light reflecting portion 7 and then extracted by the light reflecting portion 7, causing the light reflecting portion 7 to emit light, thereby realizing lighting and ambient effects.

[0047] In a preferred embodiment of the present application, as shown in FIG. 2, the incident surface 101 of the light guiding medium 1 may be a plane, or of course, as shown in FIGS. 5 and 6, the incident surface 101 of the light guiding medium 1 may be a convex lens surface, a concave lens surface, or other structured surface with optical properties, as long as the light emitted from the light emitting source 3 can smoothly enter the light guiding medium 1 and smoothly enter the optical waveguide medium layer 2 after being refracted in the light guiding medium 1.

[0048] 2 to 4, the light guiding medium 1 may have a long protrusion structure according to the size of the optical waveguide layer 2, and the light emitting sources 3 are installed at positions close to the incident surface 101 on the optical waveguide layer 2. The number of light emitting sources 3 may be plural, and the light emitting sources 3 may be uniformly distributed at intervals along the longitudinal direction of the light guiding medium 1 so as to ensure the overall light emitting effect of the optical waveguide layer 2. The specific number and installation positions of the light emitting sources 3 may be set according to the length of the light guiding medium 1, as long as the light beams emitted from the light emitting sources 3 are sufficiently distributed within the optical waveguide layer 2.

[0049] 2 and 5 to 9, the angle of incidence of the light beam emitted from the light emitting source 3 with respect to the incident surface 101 may be set according to the optical structure of the incident surface 101. Preferably, the light beam emitted from the light emitting source 3 is incident perpendicularly to the incident surface 101 and enters the light guiding medium 1.

[0050] In a preferred embodiment of the present application, the light guiding medium 1 has a refractive index that is the same as or within a predetermined range of that of the light guide medium layer 2, and the visible light transmittance of the light guiding medium 1 is equal to or greater than that of the light guide medium layer 2.

[0051] Furthermore, the predetermined range of the refractive index of the light guiding medium 1 is 1.35 to 1.65. Preferably, the predetermined range of the refractive index of the light guiding medium 1 is 1.48 to 1.55.

[0052] Furthermore, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide medium layer 2 is within the range of ±0.05.

[0053] Furthermore, the visible light transmittance of the light guiding medium 1 is 85% to 99.9%. Preferably, the visible light transmittance of the light guiding medium 1 is 95% to 99.9%.

[0054] Furthermore, the visible light transmittance of the light guiding medium 1 is 3% or more of the visible light transmittance of the optical waveguide medium layer 2 .

[0055] Furthermore, the haze of the light guiding medium 1 is 5% or less. Preferably, the haze of the light guiding medium 1 is 2% or less.

[0056] In the present invention, the refractive index, visible light transmittance, and haze of the light guiding medium 1 are set so that the light guiding medium 1 and the optical waveguide medium layer 2 have similar optical properties, thereby significantly improving the efficiency with which light rays enter the optical waveguide medium layer 2 and preventing light loss.

[0057] In a preferred embodiment of the present application, the light guiding medium 1 and the optical waveguide medium layer 2 may be integrally molded, or may be made of the same material or materials with similar optical properties such as refractive index, visible light transmittance and haze, so that the light guiding medium 1 and the optical waveguide medium layer 2 have the same or comparable optical properties, and furthermore, the light guiding medium 1 and the optical waveguide medium layer 2 can be regarded as the same medium, in which case the optimal light incidence efficiency can be obtained.

[0058] In another preferred embodiment of the present application, the light guide medium 1 is formed by curing a viscous liquid on the optical waveguide layer 2. Examples of materials that can be used include, but are not limited to, transparent optical adhesive OCA (Optically Clear Adhesive), liquid transparent optical adhesive LOCA (Liquid Optical Clear Adhesive), and optical clear resin OCR (Optical Clear Resin). The light guide medium 1 is formed by curing with light (e.g., UV) or heat. The light guide medium 1 may be formed by injecting a material into a pre-designed mold attached to the surface of the optical waveguide layer 2 (e.g., using extrusion injection, drip injection, or other operations). Alternatively, the material may be applied to the surface of the optical waveguide layer 2 in advance, followed by removing excess material by press molding or molding. Alternatively, the light guide medium 1 may be formed on the optical waveguide layer 2 by 3D printing. Alternatively, the light guide medium 1 may be formed on the optical waveguide layer 2 by coating, lamination, or other methods. The specific method for forming the light guide medium 1 may be selected or combined in various ways and is not limited here.

[0059] For example, the light guide medium 1 can be formed by using a liquid transparent optical adhesive LOCA having a viscosity of 2500 cps to 4500 cps and curing it on the optical waveguide medium layer 2 .

[0060] In addition, whether the light guiding medium 1 and the optical waveguide layer 2 are integrally molded or the light guiding medium 1 is formed on the optical waveguide layer 2 by hardening, in either case, the light guiding medium 1 can be regarded as being directly formed on the optical waveguide layer 2. Preferably, there is no need for any other layer structure between the light guiding medium 1 and the optical waveguide layer 2, and the light guiding medium 1 and the optical waveguide layer 2 can be connected without any additional bonding process, which makes the structure between the light guiding medium 1 and the optical waveguide layer 2 simpler, simplifies the molding process, and prevents the polarization state from changing when the light ray enters the optical waveguide layer 2 from the light guiding medium 1.

[0061] Furthermore, after the light guide medium 1 is formed on the optical waveguide medium layer 2, a cover member (not shown) may be placed on the entire surface of the optical waveguide medium layer 2, and the cover member covers the optical waveguide medium layer 2 and the light guide medium 1, thereby providing protection and beautifying the appearance.

[0062] In a preferred embodiment of the present application, as shown in FIGS. 2 to 4 , the light incident structure further includes a cover plate 4, which has opposite first and second ends. The first end of the cover plate 4 is connected to the optical waveguide layer 2, and the second end of the cover plate 4 is inclined away from the optical waveguide layer 2. The light guiding medium 1 is located between the cover plate 4 and the optical waveguide layer 2, and the incident surface 101 is located between the second end of the cover plate 4 and the optical waveguide layer 2, or the incident surface 101 is located near the second end of the cover plate 4 and the optical waveguide layer 2. During the formation of the light guiding medium 1, the cover plate 4 is first installed and then the light guiding medium 1 is formed between the cover plate 4 and the optical waveguide layer 2. The cover plate 4 provides a shaping effect on the light guiding medium 1, ensuring smooth formation of the light guiding medium 1. The shape and size of the cover plate 4 can be determined according to the shape and size of the light guiding medium 1 to be formed. In this application, it is not limited whether the cover plate 4 uses a transparent material or not, and preferably, the cover plate 4 uses a non-black material.

[0063] 2, the cross section of the light guiding medium 1 is a right-angled triangle, the position corresponding to the long right-angled side of the light guiding medium 1 is connected to the first main surface of the optical waveguide layer 2, and the position corresponding to the short right-angled side of the light guiding medium 1 is the incident surface 101 of the light guiding medium 1, in this case, the incident surface 101 of the light guiding medium 1 is perpendicular to the first main surface of the optical waveguide layer 2, and a cover plate 4 is installed on the hypotenuse of the light guiding medium 1. The included angle between the long right-angled side and the hypotenuse of the light guiding medium 1 is 4° to 10°, preferably 4° to 7°, and the length of the short right-angled side of the light guiding medium 1 is 4 mm or less. In this embodiment, the refractive index of the optical waveguide layer 2 may be 1.51 and the visible light transmittance (TL) may be 91.5%, the first adhesive layer 6 is ethylene vinyl acetate, and the material of the light guiding medium 1 is selected to be a UV-curable LOCA (i.e., liquid optically transparent adhesive) with a refractive index of 1.51 and a visible light transmittance (TL) of 91% or more. The light guiding medium 1 causes light generated by a light source 3 to be incident on the optical waveguide layer 2, and the light continuously propagates through the optical waveguide layer 2. During the propagation of the incident light, the light is irradiated onto the light reflecting portion 7 and reflected by the light reflecting portion 7, thereby realizing effects such as illumination and pattern display.

[0064] Preferably, the visible light transmittance (TL) of the material of the light guiding medium 1 is 99%.

[0065] 5, the cross section of the light guiding medium 1 is approximately triangular, and the incident surface 101 of the light guiding medium 1 is a concave lens surface. In this embodiment, to ensure that the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide medium layer 2 are the same or similar, preferably, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide medium layer 2 is within ±0.05, and the visible light transmittance of the light guiding medium 1 is equal to or greater than the visible light transmittance of the optical waveguide medium layer 2, preferably, 3% or more.

[0066] 6, the cross section of the light guiding medium 1 is approximately triangular, and the incident surface 101 of the light guiding medium 1 is a convex lens surface. In this embodiment, to ensure that the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide medium layer 2 are the same or similar, preferably, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide medium layer 2 is within the range of ±0.05, and the visible light transmittance of the light guiding medium 1 is equal to or greater than the visible light transmittance of the optical waveguide medium layer 2, preferably, 3% or more.

[0067] Of course, the incident surface 101 of the light guide medium 1 may be a free-form surface, and it is necessary to ensure that the convergence directions of the light rays emitted from the light source 3 are approximately the same (i.e., each light ray is distributed within an included angle range of ±2.5°).

[0068] In a specific embodiment of the present application, as shown in FIG. 8, the cross section of the light guiding medium 1 is semi-elliptical, and the position corresponding to the straight side of the light guiding medium 1 is in contact with the first main surface of the optical waveguide layer 2, and the incident surface 101 of the light guiding medium 1 is close to the position where the light guiding medium 1 is in contact with the first main surface of the optical waveguide layer 2. In this embodiment, to ensure that the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 are the same or similar, preferably, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 is within ±0.05, and the visible light transmittance of the light guiding medium 1 is equal to or greater than that of the optical waveguide layer 2, and preferably is 3% or more.

[0069] In a specific embodiment of the present application, as shown in FIG. 9, the cross section of the light guiding medium 1 is a right-angled trapezoid, the position corresponding to the long base of the light guiding medium 1 is connected to the first main surface of the optical waveguide layer 2, and the incident surface 101 of the light guiding medium 1 is a plane corresponding to the side that forms a right angle with the two bases. In this embodiment, to ensure that the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 are the same or similar, preferably, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 is within ±0.05, and the visible light transmittance of the light guiding medium 1 is equal to or greater than that of the optical waveguide layer 2, preferably, 3% or more.

[0070] Furthermore, the visible light transmittance of the light guiding medium 1 is equal to or greater than the visible light transmittance of the optical waveguide medium layer 2, and is preferably 5% or greater.

[0071] 7, the cross section of the light guiding medium 1 is a non-right triangle, and the position corresponding to the first side (the longer side of the three sides) of the light guiding medium 1 is connected to the first main surface of the optical waveguide layer 2, and the position corresponding to the second side (the shorter side of the three sides) of the light guiding medium 1 is the incident surface 101 of the light guiding medium 1. In this case, by adjusting the angle of the light source 3, the light emitted from the light source 3 can be made to be incident as perpendicularly as possible to the incident surface 101 of the light guiding medium 1, so as to enter the light guiding medium 1. In this embodiment, to ensure that the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 are the same or similar, preferably, the difference between the refractive index of the light guiding medium 1 and the refractive index of the optical waveguide layer 2 is within ±0.05, and the visible light transmittance of the light guiding medium 1 is equal to or greater than that of the optical waveguide layer 2, preferably, 3% or more.

[0072] The features and advantages of the light incidence structure of the present invention include at least the following.

[0073] First, in this light incidence structure, the light guide medium 1 is fixedly installed on the optical waveguide medium layer 2, which greatly improves the light incidence efficiency, avoids light loss, and effectively improves the lighting and ambient effects inside the vehicle.

[0074] Second, in this light incidence structure, the light guiding medium 1 and the optical waveguide medium layer 2 have the same or similar optical properties, which can greatly improve the efficiency of light incidence into the optical waveguide medium layer 2.

[0075] Third, in the light incident structure, the installation surface (ie, the first main surface) of the optical waveguide medium layer 2 may be either flat or curved, which has a wide range of applications.

[0076] Fourth, the light incident structure has a simpler structure and process, occupies a smaller area, saves space, is easy to install and use, and is suitable for industrial mass production.

[0077] Fifth, this light incidence structure allows light rays to pass through the surface of the optical waveguide layer 2 and enter the optical waveguide layer 2, replacing the conventional incidence method in which light emitted from the light source 3 enters the optical waveguide layer 2 from the end face or cut face of the optical waveguide layer 2. While ensuring the light incidence efficiency, this simplifies the structure, reduces product weight, saves costs, and saves energy and reduces emissions.

[0078] Embodiment 2 As shown in FIGS. 2 and 3 , the present application provides a car window, which includes an optical waveguide layer 2, an outer glass layer 5, and the above-mentioned light incident structure, where the optical waveguide layer 2 has a first main surface and a second main surface opposite to each other, the light incident structure is disposed on the first main surface of the optical waveguide layer 2, and the outer glass layer 5 is connected to the second main surface of the optical waveguide layer 2.

[0079] In a preferred embodiment of the present application, as shown in Figures 2 and 3, the car window further includes a first adhesive layer 6, which is bonded between the outer glass layer 5 and the second main surface of the optical waveguide medium layer 2.

[0080] Furthermore, as shown in FIG. 2, the light reflecting portion 7 is located between the first adhesive layer 6 and the second main surface of the optical waveguide medium layer 2, and the light reflecting portion 7 is fixed and adhered to the first adhesive layer 6.

[0081] Furthermore, since the optical waveguide layer 2 and the outer glass layer 5 are made of the same material (i.e., both the optical waveguide layer 2 and the outer glass layer 5 are made of glass), the present application has a two-layer laminated structure after molding. By installing a light incidence structure, this two-layer laminated structure can replace the conventional three-layer laminated structure (as shown in Figure 1). There is no need to realize light incidence through the edge or cut surface of the glass, so the installation of a third layer of glass is omitted, which simplifies the product structure and reduces the product weight.

[0082] Embodiment 3 The present application provides a vehicle having the above-described window.

[0083] Embodiment 4 As shown in Figures 10, 11, and 15, Figure 10 shows a structural schematic diagram of a car window panel according to one embodiment of the present application, Figure 15 shows a top view of the structure shown in Figure 10, and Figure 11 shows a structural schematic diagram of a car window panel according to another embodiment of the present application. The car window panel according to one embodiment of the present application includes an optical waveguide medium layer 2, a light guiding medium 1, and a light source 3. Preferably, the optical waveguide medium layer 2 includes, but is not limited to, an optical waveguide glass layer. The optical waveguide medium layer 2 has opposing first and second main surfaces 201 and 202. A light-reflecting pattern layer 203 is provided on the first main surface 201 or the second main surface 202, or, as shown in Figure 11, a light-reflecting pattern layer 203 is provided on each of the first and second main surfaces 201 and 202. The light guiding medium 1 includes a first surface 102 and a second surface 103 arranged parallel to each other, the light guiding medium 1 is closely connected to the first main surface 201 via the first surface 102, and the connection portion of the first main surface 201 connected to the first surface 102 is parallel to the first surface 102. The light emitting source 3 is, for example, an LED light emitting element, and is located at one end of the light guiding medium 1, and light rays from the light emitting source 3 enter the light guiding medium 1, and the light guiding medium 1 is configured to guide the light rays from the light emitting source 3 to the optical waveguide medium layer 2.

[0084] Note that when the first surface 102 and the first main surface 201 are "closely connected," this may mean that they are connected in close "contact" with each other with no other layer between them, or that they are connected tightly by gluing or locking with another layer between them.

[0085] The light-reflecting pattern layer 203 may be disposed on the second main surface 202 as a whole, and may be present in any pattern form, including, but not limited to, regular and irregular shapes such as multiple triangles, multiple water droplets, multiple stars, multiple squares, multiple circles, and multiple ellipses, and its specific shape can be flexibly adjusted and designed according to actual needs.

[0086] In the above-mentioned car window panel, the light guide medium 1 includes a first surface 102 and a second surface 103 arranged parallel to each other, the light guide medium 1 is tightly connected to the first main surface 201 via the first surface 102, and the connection portion of the first main surface 201 connected to the first surface 102 is parallel to the first surface 102. Therefore, when a light beam from the light emitting source 3 enters the light guide medium 1, the light guide medium 1 directs the light beam from the light emitting source 3 to the light guide medium layer 2, whereupon the light beam propagates through the light guide medium layer 2 and is reflected by the prefabricated light reflecting pattern layer 203, which then emits light to achieve an illumination or ambient effect. In this way, the combination of the light reflecting pattern layer 203, the light guide medium 1, and the light guide medium layer 2 achieves an ambient or illumination effect. Furthermore, the structure of the light guiding medium 1 is simplified, the processing difficulty is reduced, production efficiency is improved, the attachment stability to the first main surface 201 of the optical waveguide medium layer 2 is increased, and the incidence efficiency of the light emitting source 3 is improved.

[0087] Furthermore, the method for configuring the light guide medium 1 has the same light incidence effect as the method of light incidence from the end face (edge, cut face) of the third glass layer in the related art.

[0088] Furthermore, when achieving the same functional state, the two-layer stacked structure supplemented by the optical guide medium 1 can replace the three-layer stacked structure in the related art, thereby reducing the weight of the product, reducing resource usage, and significantly reducing production costs.

[0089] Next, the light-reflecting pattern layer 203 can be flexibly arranged according to actual needs, and can be arranged on the first main surface 201 or the second main surface 202, and the light-reflecting pattern layer 203 can be installed on each of the first main surface 201 and the second main surface 202, thereby reflecting light rays into the interior of the vehicle to achieve lighting or ambient effects.

[0090] Preferably, the first surface 102 and the second surface 103 respectively include, but are not limited to, flat surfaces, curved or arcuate surfaces, or other regular and irregular shaped surfaces designed parallel to each other, and specifically can be flexibly adjusted and set according to actual needs.

[0091] In order to tightly connect the connection portion of first main surface 201 and first surface 102, the connection portion of first main surface 201 and first surface 102 are configured to fit together. Specifically, if first surface 102 is a flat surface, the connection portion of first main surface 201 is correspondingly made to be a flat surface, if first surface 102 is a circular arc surface, the connection portion of first main surface 201 is correspondingly made to be a circular arc surface, and if first surface 102 is a curved surface, the connection portion of first main surface 201 is correspondingly made to be a curved surface.

[0092] As shown in FIGS. 12 and 13, FIGS. 12 and 13 show structural schematic diagrams of vehicle window panels according to two other embodiments of the present application. The difference between FIGS. 12 and 13 is the installation manner of the fourth surface 104. In one embodiment, the light guiding medium 1 further includes a third surface (i.e., the incident surface 101 in Example 1) and a fourth surface 104 installed opposite each other. The light emitting source 3 is installed adjacent to the third surface, and light from the light emitting source 3 enters the light guiding medium 1 through the third surface. The third surface and the fourth surface 104 are each flat, arcuate, or have other regular or irregular shapes. Specifically, they can be flexibly adjusted and configured according to actual needs and are not limited thereto. Furthermore, the third surface and the fourth surface 104 can be designed parallel to each other or not parallel to each other. Specifically, they can be flexibly adjusted and configured according to actual needs and are not limited thereto. In operation, the light emitting source 3 is disposed adjacent to the third surface, so that when the light emitting source 3 emits light, the generated light beam enters the third surface, enters the light guiding medium 1, and is guided by the light guiding medium 1 to the optical wave-guiding medium layer 2.

[0093] Preferably, the fourth surface 104 may be perpendicular to the first major surface 201, as shown in FIG. 12, or may be disposed at an included angle with the first major surface 201, as shown in FIG. 13, the included angle including, but not limited to, an acute angle or an obtuse angle.

[0094] 10 , in one embodiment, an optical blocking layer and / or a thermal insulation layer is provided on the first main surface 201 and / or the second main surface 202 of the optical waveguide medium layer 2. In this manner, an optical blocking layer, such as a coating layer for blocking ultraviolet rays, infrared rays, or anti-reflection, or a chemical coating layer, can be added to the first main surface 201 and / or the second main surface 202, thereby blocking wavelength bands of harmful light when exposed to sunlight and reducing the impact of harmful light on the interior decoration and passengers. A thermal insulation layer, such as a low-E thermal insulation layer, can also be added, for example, to effectively block heat from entering the interior of the vehicle from outside in the summer and effectively retain heat inside the vehicle in the winter.

[0095] 10 , in one embodiment, a transparent region is provided at the connection portion of the first main surface 201 connected to the first surface 102, and the transparent region is the first main surface 201 without any additional processing at the connection portion. As such, it is necessary to ensure that the transparent region does not have any additional functional film layers. If there is such an additional functional film layer, a clear processing is performed on the region to ensure that the light guiding medium 1 is in direct contact with the first main surface 201.

[0096] As shown in Fig. 10 or 11, Fig. 11 shows a structural schematic diagram of a car window panel according to another embodiment of the present application. Compared with Fig. 10, in the structure shown in Fig. 11, the light guiding medium 1 is directly connected to the optical waveguide medium layer 2 to form an integrated structure, for example, obtained by integral molding. Naturally, the light guiding medium 1 and the optical waveguide medium layer 2 are manufactured separately and then assembled together.

[0097] The manufacturing material of the light guiding medium 1 may be the same as or different from that of the light guiding medium layer 2, and specifically, it can be flexibly adjusted and set according to actual needs, and is not limited here.

[0098] Preferably, when the materials of the light guiding medium 1 and the optical waveguide medium layer 2 have the same refractive index and transmittance characteristics, the light guiding medium 1 and the optical waveguide medium layer 2 into which the light ray is incident can be regarded as the same medium in the light propagation plane, that is, the light ray can be easily incident from the light guiding medium 1 to the optical waveguide medium layer 2.

[0099] As shown in FIG. 10 or 11, in one embodiment, when the light guide medium 1 and the light guide medium layer 2 are manufactured separately and then assembled together, the molding surfaces of the light guide medium 1 and the first main surface 201 of the light guide medium layer 2 are matched (for example, both are planes or single arc surfaces or hyperboloids consisting of intersecting arc surfaces), and the secondary processed light guide medium 1 is matched with the molding surface of the area to be assembled with the light guide medium layer 2 by mold forming (for example, hot press forming or hot gravity forming) or cold forming, and then the light guide medium 1 and the first main surface 201 of the light guide medium layer 2 are connected.

[0100] 10, in one embodiment, when the light guiding medium 1 and the optical waveguide medium layer 2 are manufactured separately and then assembled together, a liquid 105 having a certain viscosity may be used, and the liquid 105 can be hardened by light or heat to bond the light guiding medium 1 and the optical waveguide medium layer 2. Specifically, the liquid 105 can be, but is not limited to, a transparent optical adhesive (OCA, English: Optically Clear Adhesive), a liquid transparent optical adhesive (LOCA, English: Liquid Optical Clear Adhesive), or an optical clear resin (OCR, English: Optical Clear Resin).

[0101] Preferably, the refractive index of the liquid 105 material is 1.45 to 1.65, preferably 1.48 to 1.55, the visible light transmittance (TL) of the liquid 105 material is 90% to 99.9%, preferably 97% to 99.9%, and the haze of the liquid 105 material is ≦5%, preferably ≦1%.

[0102] In a specific embodiment, the liquid 105, the light guiding medium 1, and the optical waveguide layer 2 all have the same refractive index, transmittance (TL), and haze, so that the light can be effectively guided from the light guiding medium 1 to the optical waveguide layer 2.

[0103] In one embodiment, the light guiding medium 1 and the light guiding medium layer 2 may be made of the same or different glass materials, but are not limited thereto. Preferably, the glass materials include, but are not limited to, inorganic glass or organic glass.

[0104] Specifically, the light guiding medium 1 may be made of the same glass material as the optical waveguide medium layer 2, and may be obtained, for example, by directly cutting a flat material and then using mold thermoforming to fix and bond it on the same molding surface as the connection portion of the optical waveguide medium layer 2. In this way, light can be effectively incident from the light guiding medium 1 to the optical waveguide medium layer 2.

[0105] In one embodiment, the refractive index of the light guiding medium 1 is 1.45-1.65, and / or the light transmittance of the light guiding medium 1 is 80%-99.9%, and / or the haze of the light guiding medium 1 is ≦5%.

[0106] Specifically, the refractive index of the light guiding medium 1 is 1.48 to 1.55, the light transmittance of the light guiding medium 1 is 85% to 99.9%, and the haze of the light guiding medium 1 is ≦1%.

[0107] In one embodiment, the light guiding medium 1 can be connected to the periphery, one side, two sides, or three sides of the light guiding medium layer 2, or can form any other area.

[0108] 10 and 15, in one embodiment, the light guiding medium 1 is in the shape of a long strip or an arc strip. In this way, the outer shape of the light guiding medium 1 is uniform and does not need to be manufactured into a wedge shape or a special optical structure.

[0109] As shown in FIG. 14 , in one embodiment, the light propagation distance of the optical waveguide layer 2 is defined as b, the distance between the third surface 104 of the light guiding medium 1 is defined as a, and the distance between the first surface 102 of the light guiding medium 1 and the first main surface 201 of the optical waveguide layer 2 is defined as h. Then, b≈20a-30a, preferably b≈22a-28a, more preferably b≈24a-26a, and a≈6h-10h, preferably a≈7h-9h. If a and h are not designed to be within these ranges, for example, if the design is too small, the amount of incident light may be insufficient. If the design is too large, the amount of incident light will not increase, resulting in wasted material and space. Furthermore, after the light guiding medium 1 and the optical waveguide glass window are assembled together, the overall structure has small distances a and h, occupying a small area, making it easy to install and use.

[0110] In a specific embodiment, the relationship between the size design of the light guiding medium 1 (the spacing a and the spacing h) and the light propagation distance b required for the optical waveguide medium layer 2 satisfies h:a:b ≈ 1:8:200, and this size design of the light guiding medium 1 enables the light emitted from the light emitting source 3 to be guided to the optical waveguide medium layer 2 with maximum efficiency.

[0111] For example, when the light propagation distance b required by the optical waveguide layer 2 is 600 mm, it can be seen that the distance a between the third surface 104 and the fourth surface 104 of the light guiding medium 1 is ≈25 mm, and the distance h between the first surface 102 and the second surface 103 of the light guiding medium 1 is ≈3 mm. That is, the width of the light guiding medium 1 is 24 mm, and the height is 3 mm, and the light guiding medium 1 of this size can guide the light emitted from the LED light source to the optical waveguide layer 2 with maximum efficiency.

[0112] 10 , in one embodiment, the vehicle window panel further includes an outer glass layer 5. The second main surface 202 is connected to the outer glass layer 5 via a first adhesive layer 6. The outer glass layer 5 is closer to the outside of the vehicle, and the optical waveguide medium layer 2 is closer to the inside of the vehicle. When the light emitting source emits light, the light emitted by the light reflecting pattern layer 203 can be observed from outside the vehicle.

[0113] Preferably, the first adhesive layer 6 comprises, but is not limited to, ethylene vinyl acetate.

[0114] 16 and 17, which respectively show structural schematic diagrams of car window panel assemblies according to two other embodiments of the present application, and compared with the structure shown in Fig. 10, in one embodiment, the car window panel assembly includes a car window panel according to any one of the above embodiments and a cover assembly 8 that covers the exterior of the light guiding medium 1 and the light emitting source 3. In this way, the light guiding medium 1 and the light emitting source 3 are shielded and protected by the cover assembly 8.

[0115] As shown in FIG. 16, the cover assembly 8 is preferably adhesively fixed to the first main surface 201 of the optical waveguiding medium layer 2 by a second adhesive layer 9 .

[0116] As shown in FIG. 17 , in another embodiment, the cover assembly 8 is adhesively fixed on one side to the first main surface 201 of the optical waveguide medium layer 2 by the second adhesive layer 9, and on the other side to the second surface 103 of the light guiding medium 1, and this design can reduce the area occupied by the first main surface 201 of the optical waveguide medium layer 2, and the structural arrangement is compact.

[0117] Embodiment 5 As shown in Figures 10 and 15, in one embodiment, a vehicle includes a window panel assembly according to any of the above embodiments.

[0118] In the above vehicle, the light guiding medium 1 includes a first surface 102 and a second surface 103 arranged parallel to each other, the light guiding medium 1 is tightly connected to the first main surface 201 via the first surface 102, and the connection portion of the first main surface 201 connected to the first surface 102 is parallel to the first surface 102. Therefore, when a light beam from the light emitting source 3 enters the light guiding medium 1, the light guiding medium 1 directs the light beam from the light emitting source 3 to the light guide medium layer 2, whereby the light beam propagates through the light guide medium layer 2 and is reflected by the prefabricated light reflecting pattern layer 203, which then emits light to achieve an illumination or ambient effect. In this way, the combination of the light reflecting pattern layer 203, the light guiding medium 1, and the light guide medium layer 2 achieves an ambient or illumination effect. Furthermore, the structure of the light guiding medium 1 is simplified, the processing difficulty is reduced, production efficiency is improved, the attachment stability to the first main surface 201 of the optical waveguide medium layer 2 is increased, and the incidence efficiency of the light emitting source 3 is improved.

[0119] Furthermore, the method for configuring the light guide medium 1 has the same light incidence effect as the method of light incidence from the end face (edge, cut face) of the third glass layer in the related art.

[0120] Furthermore, when achieving the same functional state, the two-layer stacked structure supplemented by the optical guide medium 1 can replace the three-layer stacked structure in the related art, thereby reducing the weight of the product, reducing resource usage, and significantly reducing production costs.

[0121] The above are merely illustrative specific examples of the present application and do not limit the scope of the present application. Any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present application fall within the scope of protection of the present application. [Explanation of symbols]

[0122] 10. Glass, 20. Luminous source 1, light guiding medium, 101, incident surface, 102, first surface, 103, second surface, 104, fourth surface, 105, liquid, 2, optical waveguide medium layer, 201, first main surface, 202, second main surface, 203, light reflecting pattern layer, 3, light emitting source, 4, cover plate, 5, outer glass layer, 6, first adhesive layer, 7, light reflecting portion, 8, cover member, 9, second adhesive layer

Claims

1. A light ray incident structure for conducting a light ray into an optical waveguide medium layer, the optical waveguide medium layer having at least a first main surface on which the light ray is incident, the light ray incident structure comprising: a light guiding medium, at least a portion of which is cured and formed on a first major surface of the light guiding medium layer so that at least a portion of the light guiding medium becomes part of the light guiding medium layer, the light guiding medium having at least one incident surface onto which a light ray is incident; a light emitting source, wherein a light ray emitted from the light emitting source passes through the incident surface and enters the light guiding medium, and the light ray is refracted by the light guiding medium and then enters the optical waveguide medium layer from the first main surface.

2. 2. The light incidence structure according to claim 1, wherein the light guiding medium is a protrusion structure located on the first main surface of the optical waveguide medium layer.

3. The light incident structure according to claim 2 , wherein the first main surface is a flat surface or a curved surface.

4. 3. The light incident structure according to claim 2, wherein the optical waveguide layer has a second main surface opposite to the first main surface, a light reflecting portion is provided on the second main surface, and light incident into the optical waveguide layer is reflected by the light reflecting portion.

5. The light incident structure according to claim 4 , wherein the light reflecting portion has a predetermined pattern.

6. 3. The light incidence structure according to claim 1, wherein the incidence surface is a flat surface, a convex lens surface, or a concave lens surface.

7. 3. The light incidence structure according to claim 1, wherein the light guiding medium has a refractive index that is the same as or within a predetermined range of that of the optical waveguiding medium layer.

8. 8. The light incident structure according to claim 7, wherein the visible light transmittance of the light guiding medium is equal to or greater than the visible light transmittance of the optical waveguide medium layer.

9. 3. The light incidence structure according to claim 1, wherein the light guide medium is integrally formed with the optical waveguiding medium layer.

10. 3. The light beam incidence structure according to claim 1, wherein the light guiding medium is formed by hardening a viscous liquid on the optical waveguide medium layer.

11. a cover plate having a first end and a second end opposite to each other, the first end of the cover plate being connected to the optical waveguide medium layer and the second end of the cover plate being inclined away from the optical waveguide medium layer, and the optical guiding medium being located between the cover plate and the optical waveguide medium layer; 11. The light incidence structure of claim 10, wherein the incident surface is located between the second end of the cover plate and the optical waveguide medium layer, or the incident surface is located between a position close to the second end of the cover plate and the optical waveguide medium layer.

12. The light incidence structure according to claim 11 , wherein the light emitting source is disposed at a position close to the incidence surface in the optical waveguide medium layer.

13. 13. A vehicle window comprising: an optical waveguide layer; an outer glass layer; and the light ray entrance structure according to any one of claims 1 to 12, wherein the optical waveguide layer has a first main surface and a second main surface facing each other, the light ray entrance structure is disposed on the first main surface, and the outer glass layer is connected to the second main surface.

14. 14. The vehicle window of claim 13, further comprising a first adhesive layer, the first adhesive layer being adhered between the outer glass layer and the second major surface.

15. an optical waveguide layer having a first main surface and a second main surface facing each other, the optical waveguide layer having a light reflecting pattern layer disposed on the first main surface and / or the second main surface; A light guiding medium including a first surface and a second surface arranged parallel to each other, the light guiding medium being tightly connected to the first main surface via the first surface, and a connection portion of the first main surface connected to the first surface being parallel to the first surface; a light emitting source located at one end of the light guiding medium, wherein light rays from the light emitting source are incident on the light guiding medium, and the light guiding medium guides the light rays from the light emitting source to the optical waveguide medium layer.

16. 16. The car window panel according to claim 15, wherein the light guiding medium further includes a third surface and a fourth surface disposed opposite to each other, the light emitting source is disposed adjacent to the third surface, and light rays from the light emitting source enter the light guiding medium through the third surface, and the third surface and the fourth surface are each a flat surface or an arcuate surface.

17. 16. The car window panel according to claim 15, wherein an optical blocking layer and / or a heat insulating film layer is provided on the first main surface and / or the second main surface of the optical waveguide medium layer.

18. A transparent region is provided at a connection portion of the first main surface connected to the first surface, and the transparent region is a first main surface on which no additional processing has been applied to the connection portion. A car window panel according to any one of claims 15 to 17.

19. 16. The car window panel according to claim 15, wherein the light guide medium and the light guide medium layer are integrally molded, or the light guide medium and the light guide medium layer are manufactured separately and then assembled together.

20. The car window panel according to claim 15 or 19, characterized in that the light guiding medium is fixedly connected to the optical waveguide medium layer by a hardenable liquid, the liquid being a transparent optical adhesive or an optically transparent resin, the refractive index of the liquid material being 1.45 to 1.65, the visible light transmittance of the liquid material being 90% to 99.9%, and the haze of the liquid material being ≦5%.

21. 16. The car window panel according to claim 15, wherein the light guide medium and the light guide medium layer use the same glass material, and / or the glass material is inorganic glass or organic glass.

22. The refractive index of the light guiding medium is 1.45 to 1.65, the light transmittance of the light guiding medium is 80% to 99.9%, and the haze of the light guiding medium is ≦5%. Car window panel according to claim 15.

23. 16. The car window panel according to claim 15, wherein the light guide medium is connected to at least one side of the light guide medium layer, and / or the light guide medium is in the form of a long strip or an arc strip.

24. The car window panel according to claim 15, wherein b is a light propagation distance of the optical waveguide medium layer, a is a distance between the third surface and the fourth surface of the light guiding medium, and h is a distance between the first surface of the light guiding medium and the first main surface of the optical waveguide medium layer, and b is 20a to 30a and a is 6h to 10h.

25. 25. The car window panel according to claim 24, wherein h:a:b=1:8:

200.

26. 16. The car window panel according to claim 15, further comprising an outer glass layer, wherein the second main surface is connected to the outer glass layer via a first adhesive layer.

27. A car window panel assembly comprising: the car window panel according to any one of claims 15 to 26; and a cover member that covers the exterior of the light guiding medium and the light emitting source.

28. A vehicle comprising the car window according to any one of claims 13 to 14 or the car window panel according to any one of claims 15 to 26.

Images