Luminescent glass, glass assembly and article

Abstract

The invention relates to luminescent glass, a glass assembly and a product. The luminescent glass comprises a glass body and a light guide plate. A luminous pattern layer is arranged on the side surface and / or inside the glass body. The light guide plate is provided with an incident surface, a light emitting surface and two light guide side surfaces. The two light guide side surfaces are oppositely arranged, the two light guide side surfaces are connected between the incident surface and the emergent surface, each light guide side surface is provided with a microprism array, and each microprism array comprises a plurality of microprisms which are sequentially arranged in the direction from the incident surface to the emergent surface. When the luminescent glass, the glass assembly and the product are used, light rays generated by the luminescent light source enter the light guide plate through the incident surface, and in the transmission process in the light guide plate, the light rays are totally reflected by the microprism arrays on the two light guide side surfaces, so that most of the light rays are kept to be propagated in the light guide plate and are finally emitted from the emergent surface; the light emitted by the light-emitting surface is more uniform and higher in brightness, and an atmosphere lamp effect with more uniform and brighter brightness is formed in the visible area of the glass body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass, in particular to a light-emitting glass, a glass assembly and an article. BACKGROUND

[0002] With the development of the vehicle industry, more and more vehicles are provided with atmosphere lamps inside, which can increase the aesthetic degree of the vehicle. The glass assembly in the related art includes various forms such as two-piece and three-piece. For the two-piece glass assembly, it usually includes an outer piece of glass, a light guide block, an inner piece of glass, a light source and a light-emitting pattern layer, the light-emitting pattern layer is printed on the outer side of the inner piece of glass, and the light guide block is fixed on the inner piece of glass by an optical adhesive or an optical adhesive tape. When the light of the light source is refracted to the inner piece of glass through the light guide block, the light-emitting pattern layer emits light, and the color is controllable, forming an atmosphere lamp effect.

[0003] However, in the glass assembly in the related art, the light guide block adopts a double-plane optical design, which causes the direct light to penetrate into the inner piece of glass twice, resulting in an unexpected light interference phenomenon, causing the color difference of the actual light effect and the design pattern to deviate, which may form an interfering diffuse reflection spot, the light utilization rate is low, and the uniformity of the atmosphere lamp effect is poor. SUMMARY

[0004] Therefore, it is necessary to provide a light-emitting glass, a glass assembly and an article, which can improve the light utilization rate and the uniformity of the atmosphere lamp effect.

[0005] In one aspect, the present application provides a light-emitting glass, comprising:

[0006] a glass body, a side surface and / or an inner part of the glass body being provided with a light-emitting pattern layer; and

[0007] a light guide plate, the light guide plate being provided with an incident surface, an outgoing surface and two light guide side surfaces, the incident surface and the outgoing surface being oppositely arranged, the incident surface being arranged to face a light-emitting light source, and the outgoing surface being arranged to face an end surface of the glass body; the two light guide side surfaces being oppositely arranged and connected between the incident surface and the outgoing surface, each of the light guide side surfaces being provided with a micro-prism array, the micro-prism array including a plurality of micro-prisms arranged in sequence along a direction from the incident surface to the outgoing surface.

[0008] In one embodiment, each part of the light guide side surface along the direction from the incident surface to the outgoing surface is provided with the micro-prism.

[0009] In one embodiment, the light guide side surface is a curved surface curved around a first axis, and the first axis is parallel to the incident surface and the outgoing surface.

[0010] In one of the embodiments, the glass body is curved around a second axis, the light guide side is also curved around the second axis, and the curvature of the light guide side is the same as the curvature of the glass body.

[0011] In one of the embodiments, the light exit surface is spaced apart from the end surface of the glass body; the light exit surface is provided with a plurality of convexities, the convexities are convexly arranged towards the direction close to the end surface of the glass body, and the plurality of convexities are sequentially arranged along the thickness direction of the light guide plate.

[0012] In one of the embodiments, the light guide plate and the end surface of the glass body are in abutment or fixedly connected by optical adhesive; or, the light guide plate and the glass body are integrated.

[0013] In one of the embodiments, the thickness of the light guide plate increases or remains unchanged along the direction from the light entrance surface to the light exit surface.

[0014] In one of the embodiments, the light emitting source comprises a light emitting element and a circuit board, the light emitting element is mounted on the circuit board, and the light emitting center of the light emitting element is opposite to the light entrance surface.

[0015] In one of the embodiments, the light emitting element is a plurality of light emitting elements, the plurality of light emitting elements are sequentially and spaced apart along the direction parallel to the light guide side and the light entrance surface; the micro-prism array on each light guide side is provided in a plurality of micro-prism arrays, and the plurality of micro-prism arrays on each light guide side are provided one by one corresponding to the plurality of light emitting elements.

[0016] In one of the embodiments, the light guide plate comprises a plurality of split parts, the plurality of split parts are sequentially and spaced apart along the end surface of the glass body, each split part is provided with the light entrance surface, the light exit surface and two light guide sides, and each light emitting element is provided corresponding to each split part.

[0017] In one of the embodiments, the micro-prism is a groove formed on the light guide side and recessed towards the inside of the light guide plate; the micro-prism is a triangular prism.

[0018] In one of the embodiments, the vertex angle of the micro-prism is a, and 60°≤a≤120°.

[0019] In one of the embodiments, each micro-prism is provided in a curved structure, and the curvature center of the curved structure is located on the side of the curved structure facing the light emitting element.

[0020] In one of the embodiments, the curvature center of each of the micro-prisms is located on the same axial plane, and the axial plane passes through the center of the light emitting element.

[0021] In one of the embodiments, each of the micro-prisms is a circular arc structure, and the center of each of the circular arc structures and the center of the light emitting element are located on the same straight line.

[0022] In one of the embodiments, the distance between the main edges of two adjacent micro-prisms is d, and d decreases in the direction of the light propagation of the light rays along the light guide plate.

[0023] In one of the embodiments, the height of the micro-prisms is h, and 20 μm≤h≤50 μm.

[0024] In one of the embodiments, one of the two light guide sides is a concave surface, and the other of the two light guide sides is a convex surface.

[0025] R1≈0.5L~0.8L, R2≈1.2L~1.5L;

[0026] wherein R1 is the radius of curvature of the convex surface, R2 is the radius of curvature of the concave surface, and L is the distance between the center of the light emitting source and the top angle of the micro-prism.

[0027] In another aspect, the application further provides a glass assembly comprising the light emitting glass and a light emitting source, wherein the light emitting source is arranged at the edge of the light emitting glass, and the light generated by the light emitting source is incident into the light emitting glass.

[0028] In yet another aspect, the application further provides an article comprising the glass assembly.

[0029] In use, the light generated by the light emitting source is incident into the light guide plate through the incident surface, and the light is totally reflected by the micro-prism array on the two light guide sides during the transmission in the light guide plate, so that most of the light is kept in the light guide plate and is finally emitted by the light emitting surface. The light emitted by the light emitting surface is more uniform and has higher brightness. The light emitted by the light emitting surface enters the glass body, and when the light is refracted by the light emitting layer, the light emitting layer is excited to emit light, so that a more uniform and brighter atmosphere lamp effect is formed in the visible area of the glass body. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a structural diagram of a glass assembly according to an embodiment of the application.

[0031] Figure 2 FIG. 2 is a top view of the glass assembly shown in FIG. 1. Figure 1

[0032] ​Figure 3 A structure diagram of the light-emitting glass in the glass assembly shown in Figure 2 A structure diagram of the light-emitting glass in the glass assembly shown in

[0033] Figure 4 A structure diagram of the light-emitting glass in the glass assembly shown in Figure 2 An enlarged structure diagram of the glass assembly shown in at A.

[0034] Figure 5 An enlarged structure diagram of the glass assembly shown in at B-B. Figure 2 An enlarged structure diagram of the glass assembly shown in at B-B.

[0035] Figure 6 An enlarged structure diagram of an embodiment at C. Figure 5 An enlarged structure diagram of an embodiment at C.

[0036] Figure 7 An enlarged structure diagram of another embodiment at C. Figure 5 An enlarged structure diagram of another embodiment at C.

[0037] Figure 8 An enlarged structure diagram of another embodiment at C. Figure 5 An enlarged structure diagram of another embodiment at C.

[0038] Figure 9 A structure diagram of the glass assembly of another embodiment of the present application.

[0039] Figure 10 A structure diagram of the light-emitting glass in the glass assembly shown in Figure 9 A structure diagram of the light-emitting glass in the glass assembly shown in

[0040] 10, light-emitting glass; 11, glass body; 111, light-emitting layer; 112, outer sheet glass; 113, intermediate film layer; 114, inner sheet glass; 12, light guide plate; 121, incident surface; 122, light exit surface; 1221, convex hull; 123, light guide side surface; 124, micro-prism array; 1241, micro-prism; 125, split part; 20, light-emitting light source; 21, light-emitting element; 22, circuit board. DETAILED DESCRIPTION

[0041] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0042] An embodiment of the present application provides an article, including but not limited to any one or combination of a car, a ship, a locomotive, a showcase, a building window curtain wall, human-computer interaction, an electrical appliance and an information kiosk, which can be flexibly adjusted and set according to actual needs.

[0043] For the convenience of description, the product in the embodiment will be exemplarily taken as a car for description, but the embodiment is not limited to the car.

[0044] Please refer to Figure 1 In an embodiment, the product comprises a glass assembly. The glass assembly can be a sunroof glass assembly, a front windshield glass assembly, a rear windshield glass assembly, a side windshield glass assembly, or a quarter window glass assembly, etc.

[0045] Specifically, the glass assembly comprises a light-emitting glass 10. The light-emitting glass 10 comprises a glass body 11, and the glass body 11 has a light-emitting layer 111. The light-emitting layer 111 includes but is not limited to an ink layer or other materials, which are not limited herein. The light transmittance of the ink layer can be adjusted according to actual needs, and the ink layer can be transparent or non-transparent, as long as it can emit light under the excitation of light, thereby displaying a pattern effect.

[0046] Exemplarily, the light-emitting layer 111 is arranged on the side and / or the interior of the glass body 11.

[0047] In the embodiment, the light-emitting layer 111 can be arranged on the side of the glass body 11. Specifically, when the glass body 11 is a single glass, the light-emitting layer 111 can be arranged on the side of the single glass; when the glass body 11 is a laminated glass, the laminated glass comprises at least two glasses arranged in a stack, and an intermediate film layer 113 is arranged between the two adjacent glasses. The light-emitting layer 111 can be arranged on the side of any one of the glasses and / or the intermediate film layer 113. Exemplarily, the light-emitting layer 111 is a surface structured layer; the surface structured layer is formed by at least one of mechanical structuring, embossing, etching, and spraying. Specifically, when the glass body 11 is a single glass, the surface structured layer can be arranged on the side of the glass body 11; when the glass body 11 is a laminated glass, the surface structured layer can be arranged on the side of any one of the glasses and / or the intermediate film layer 113.

[0048] It should be noted that the surface structured layer can be formed by, for example, pressing the structure into the side surface of the glass body 11; alternatively, the surface structured layer can be formed by, for example, embossing, in particular, pad printing, the material of the light emitting pattern layer 111 being embossed to form the scattering structure; alternatively, the surface structured layer can be formed by, for example, etching, the side surface of the glass body 11 being etched to form the surface structured layer so as to produce the scattering effect; alternatively, the surface structured layer can be formed by, for example, spraying, such as sandblasting. The above-mentioned methods for forming the surface structured layer can be used alone or in combination. Alternatively, the surface structured layer can be replaced by light scattering particles. The light scattering particles basically have the same function as the surface structured layer and cause light scattering, thereby allowing the guided light to irradiate the light emitting pattern layer 111, which reflects the light to the inside of the vehicle to achieve the illumination or atmosphere effect.

[0049] It should be noted that in the present embodiment, the light emitting pattern layer 111 can also be arranged inside the glass body 11. Specifically, when the glass body 11 is a single sheet of glass, the light emitting pattern layer 111 can be arranged inside the single sheet of glass; when the glass body 11 is a laminated glass, the light emitting pattern layer 111 can be arranged inside any one of the glass sheets and / or the interlayer film 113. For example, the light emitting pattern layer 111 is, for example, light scattering particles. Specifically, when the glass body 11 is a single sheet of glass, the light scattering particles can be arranged inside the glass body 11; when the glass body 11 is a laminated glass, the light scattering particles can be arranged inside any one of the glass sheets and / or the interlayer film 113.

[0050] It should be noted that in the present embodiment, the light emitting pattern layer 111 can also be arranged both on the side surface and inside the glass body 11.

[0051] It should be noted that in the present embodiment, the light emitting pattern layer 111 can also be arranged both on the side surface and inside the glass body 11.

[0052] The material of the intermediate film layer 113 can be, for example, polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), or ionomer film (SGP). Of course, the intermediate film layer 113 can also have other functions, such as setting at least one colored area as a shaded zone to reduce the interference of sunlight on the human eye, or adding an infrared absorber to have sun protection or heat insulation functions.

[0053] The luminescent layer 111 can be applied to the entire glass body 11, meaning the entire surface of the glass body 11 is covered with the luminescent layer 111. Of course, the luminescent layer 111 can also be applied to one or more local parts of the glass body 11, and can exist in any shape, including but not limited to multiple triangles, multiple teardrop shapes, multiple star shapes, multiple quadrilaterals, multiple circles, multiple ellipses, and other regular and irregular shapes. Its specific shape can be flexibly adjusted and designed according to actual needs.

[0054] For example, the glass assembly also includes a light source 20. When the light source 20 operates, the light it generates enters the luminous glass 10 and propagates within it. The propagating light is reflected by a pre-fabricated luminous layer 111, causing the luminous layer 111 to emit light and achieve an illumination or ambient effect. The light source 20 is, for example, positioned at the edge of the luminous glass 10; that is, the light generated by the light source 20 enters the luminous glass 10 from its edge, is transmitted through the luminous glass 10 to the luminous layer 111, causing the luminous layer 111 to emit light. Furthermore, because the light source 20 is positioned at the edge of the luminous glass 10, it can be easily concealed by, for example, interior trim or body panels, thus becoming invisible and improving the product's appearance.

[0055] For example, the light source 20 can be arranged on any side of the light-emitting glass 10, such as the left, right, front, or rear side of the light-emitting glass 10. It should be noted that the left, right, front, or rear sides in this embodiment are all based on the vehicle driving normally on the road surface. Along the driving direction, the side closer to the front of the vehicle is the front side, and the side closer to the rear of the vehicle is the rear side; along the direction perpendicular to the driving direction and parallel to the ground, the side closer to the left door of the vehicle is the left side, and the side closer to the right door of the vehicle is the right side.

[0056] For example, the glass assembly also includes a controller. The controller is electrically connected to the light source 20. The controller controls the light source 20 to operate.

[0057] For example, the glass assembly also includes a light guide plate 12. When the light source 20 is working, the light is refracted and reflected multiple times by the light guide plate 12, which can achieve efficient light transmission and allow the light to enter the glass body 11. Then, the light is reflected and / or refracted by the light-emitting layer 111 in the glass body 11 to the interior environment of the vehicle, providing lighting effects for the vehicle interior or creating a better lighting atmosphere, thereby improving the comfort and enjoyment of the occupants.

[0058] Specifically, the light guide plate 12 has an incident surface 121, a light emitting surface 122, and two light guiding side surfaces 123. The incident surface 121 and the light emitting surface 122 are arranged opposite to each other. The incident surface 121 is positioned facing the light source 20, and the light emitting surface 122 is positioned facing the end face of the glass body 11. It should be noted that the end face of the glass body 11 refers to the outer peripheral surface circumferentially arranged around the central axis of the glass body 11. The two light guiding side surfaces 123 are arranged opposite to each other, and both light guiding side surfaces 123 are connected between the incident surface 121 and the light emitting surface 122. Each light guiding side surface 123 is provided with a microprism array 124, which includes a plurality of microprisms 1241 arranged sequentially along the direction from the incident surface 121 to the light emitting surface 122.

[0059] In use, the light emitted from the light source 20 enters the light guide plate 12 through the incident surface 121. During its transmission within the light guide plate 12, the light undergoes total internal reflection via the microprism array 124 on the two light guide side surfaces 123. This ensures that most of the light remains within the light guide plate 12 and is ultimately emitted from the light-emitting surface 122. The light emitted from the light-emitting surface 122 is more uniform and has higher brightness. The light emitted from the light-emitting surface 122 enters the glass body 11 and, upon refraction to the light-emitting layer 111, excites the light-emitting layer 111 to emit light, thereby creating a more uniform and brighter ambient lighting effect within the visible area of ​​the glass body 11.

[0060] For example, the glass body 11 includes a visible area and a shielding area circumferentially surrounding the visible area. The shielding area is provided with a light-blocking layer, which blocks light. Optionally, the visible light transmittance of the shielding area is less than or equal to 10%, more preferably less than or equal to 5%, even more preferably less than or equal to 3%, or even less than or equal to 1%, or essentially 0%, i.e., it is completely opaque to visible light. In this embodiment, the light guide plate 12 is specifically disposed, for example, in the shielding area. The light guide plate 12 is shielded by the shielding area, thereby effectively improving the product's appearance.

[0061] For example, microprisms 1241 are provided at various locations along the direction from the incident surface 121 to the emitting surface 122 on the light guide side 123. In other words, starting from the edge of the light guide side 123 closest to the incident surface 121 and ending at the edge of the light guide side 123 closest to the emitting surface 122, the microprisms 1241 arranged on the light guide side 123 cover the entire light guide side 123. In this way, the light can be kept within the light guide plate 12 to the greatest extent, thereby improving the light utilization rate and the uniformity of the ambient lighting effect.

[0062] Based on any of the foregoing embodiments, the light guide plate 12 may be, but is not limited to, a curved plate. Specifically, the light guide side surface 123 is configured as a curved surface. Optionally, the curved surface may include, but is not limited to, an arc shape, an elliptical arc shape, a parabolic arc shape, or an exponential shape. In this embodiment, the light guide side surface 123 is an arc shape bent around a first axis, which is parallel to the incident surface 121 and the light emitting surface 122. Specifically, the first axis is, for example, parallel to... Figure 1 or Figure 9 The Y-axis is shown in the diagram. That is, the light guide side 123 is curved from the incident surface 121 to the light emitting surface 122. Optionally, the first axis is located on the side of the light guide plate 12 that is away from the external environment.

[0063] Of course, as some optional solutions, the light guide plate 12 can also be set as a planar structure. Compared with the planar light guide plate 12, the curved light guide plate 12 can not only adapt better to the curved shape of the glass body 11, but also control the light path by adjusting the radius of curvature, so that the light diffuses and propagates along a specific path, allowing more light to be totally reflected by the microprisms 1241 on the light guide side 123 and propagate back and forth in the light guide plate 12 before finally being guided to the light-emitting layer 111, which can help improve the light utilization rate and the uniformity of light emission.

[0064] For example, the glass body 11 is generally configured as curved glass. The glass body 11 is curved about a second axis, which is located on the side of the glass body 11 facing the internal environment. Specifically, the second axis is, for example, parallel to... Figure 1 or Figure 9 The X-axis is shown in the diagram. To facilitate efficient guidance of light to the glass body 11, the light-guiding side 123 is also curved around the second axis, and the curvature of the light-guiding side 123 is the same as the curvature of the glass body 11. This avoids light leakage or dark areas caused by shape differences.

[0065] It should be noted that the curvature "same" in this embodiment is not "same" in a strict mathematical sense. It is sufficient as long as it is "same" to be observed by the naked eye, and a deviation of up to 10% is allowed.

[0066] In this embodiment, the light-emitting surface 122 is specifically set to face the end face of the inner glass 114, but it is not limited to this. For example, it can also be set to face the end face of the outer glass 112 or the end face of the intermediate film layer 113. When the light-emitting surface 122 faces the end face of the inner glass 114, the light is emitted outward through the light-emitting surface 122 of the light guide plate 12 and enters the interior of the inner glass 114, where it is guided by the inner glass 114 to the light-emitting layer 111.

[0067] Based on any of the foregoing embodiments, please refer to Figure 8 The light-emitting surface 122 can be spaced apart from the end face of the glass body 11, meaning the light-emitting surface 122 and the end face of the glass body 11 are not in contact. Thus, the light guide plate 12 and the glass body 11 are independently configured, manufactured, and processed, and the light guide plate 12 can be replaced independently. More specifically, the light-emitting surface 122 has multiple protrusions 1221, which protrude towards the end face of the glass body 11, and the multiple protrusions 1221 are arranged sequentially along the thickness direction of the light guide plate 12. Optionally, the surface of the protrusions 1221 may include, but is not limited to, a curved surface. This results in better light dispersion and more uniform optical effect from the light-emitting surface 122.

[0068] The light-emitting surface 122 is not limited to having a gap with the end face of the glass body 11; for example, the gap between the light-emitting surface 122 and the end face of the glass body 11 can be 0. Please refer to [link / reference]. Figure 6 For example, the light guide plate 12 can also abut against the end face of the glass body 11 or be fixedly connected by optical adhesive. Specifically, the light guide plate 12 abuts against the end face of the inner glass 114 or is fixedly connected by optical adhesive. Please refer to... Figure 7 For example, the light guide plate 12 may be integrally formed with the glass body 11. Specifically, the light guide plate 12 and the inner glass 114 are integrally formed, and the inner glass 114 is bent to obtain the light guide plate 12.

[0069] Please see Figure 6 In this embodiment, the thickness of the light guide plate 12 is T. The thickness T is designed to gradually change or remain constant along the direction from the incident surface 121 to the light emitting surface 122, which can help improve light utilization and uniformity. Specifically, in this embodiment, the thickness T of the light guide plate 12 increases along the direction from the incident surface 121 to the light emitting surface 122. In other words, the area of ​​the incident surface 121 is smaller than the area of ​​the light emitting surface 122, and the cross-sectional areas of the light guide plate 12 between the incident surface 121 and the light emitting surface 122 gradually increase along the direction from the incident surface 121 to the light emitting surface 122, which can achieve uniform and efficient diffusion of the light generated by the light source 20 and incident it onto the light-emitting layer 111.

[0070] In this embodiment, the light source 20 can be of various types, including but not limited to LED lamps, halogen lamps, or fluorescent lamps. The specific type can be flexibly selected and adjusted according to actual needs, and no limitation is made here.

[0071] Please see Figure 6 For example, the light source 20 includes a light-emitting element 21 and a circuit board 22. The light-emitting element 21 is mounted on the circuit board 22. The circuit board 22 can provide power to the light-emitting element 21 and control the light-emitting element 21 to turn on and off and adjust the light emission power. The light emitted by the light-emitting element 21 may, for example, be incident into the light guide plate 12 in a direction perpendicular to the incident surface 121, or it may be incident into the light guide plate 12 at an angle relative to the incident surface 121. In this embodiment, the light emission center of the light-emitting element 21 is, for example, directly opposite the incident surface 121. That is, the light from the light-emitting element 21 is specifically incident into the light guide plate 12 perpendicular to the incident surface 121, which can improve light utilization and light emission uniformity.

[0072] For example, there may be multiple light-emitting elements 21, specifically two, three, four, five or more, without limitation. The multiple light-emitting elements 21 are arranged sequentially at intervals along a direction parallel to the light-guiding side surface 123 and the incident surface 121, that is, for example, along a direction such as... Figure 1 or Figure 9 The Y-axis arrangement is shown. To ensure that the light from each light-emitting element 21 is guided into the glass body 11, optionally, please refer to... Figure 9 and Figure 10 Multiple microprism arrays 124 are configured on each light guide side 123, and each microprism array 124 on each light guide side 123 corresponds one-to-one with multiple light-emitting elements 21. Specifically, the light-emitting element 21 is projected onto the incident surface 121 along its incident direction to obtain the incident portion. The two microprism arrays 124 corresponding to the light-emitting element 21 are located on opposite sides of the incident portion along the thickness direction of the light guide plate 12. In other words, along the thickness direction of the light guide plate 12, the light from the light-emitting element 21 incident into the interior of the light guide plate 12 is completely enveloped by the two microprism arrays 124 corresponding to it. Thus, after the light from each light-emitting element 21 is incident into the interior of the light guide plate 12, it undergoes total internal reflection by the two microprism arrays 124 corresponding to the light-emitting element 21, causing the light to exit through the light-emitting surface 122 and enter the interior of the glass body 11. When the number of light-emitting elements 21 increases, the number of microprism arrays 124 increases accordingly, the light-emitting area of ​​the light-emitting layer 111 increases accordingly, and the light-emitting uniformity is improved.

[0073] For example, please refer to Figure 9 and Figure 10 The light guide plate 12 can be designed as an integral structure.

[0074] Of course, the light guide plate 12 is not limited to being configured as a single structure; for example, please refer to [link to example]. Figures 1 to 3 The light guide plate 12 includes multiple sub-sections 125. These sub-sections 125 are arranged sequentially at intervals along the end face of the glass body 11. Optionally, the multiple sub-sections 125 can be obtained by cutting the entire light guide plate 12, i.e., removing the material between two sub-sections 125. Each sub-section 125 has an incident surface 121, a light-emitting surface 122, and two light-guiding side surfaces 123. Each light-emitting element 21 is positioned corresponding to each sub-section 125. That is, along the light-emitting direction of the light-emitting element 21, each light-emitting element 21 faces each incident surface 121. Each light-guiding side surface 123 has a microprism array 124. In this way, the light from each light-emitting element 21 is incident into the corresponding sub-parts 125, and undergoes total internal reflection through the microprism array 124 on the light-guiding side 123 of the sub-parts 125, so that the light is transmitted back and forth within the sub-parts 125 to the light-emitting surface 122 and enters the glass body 11.

[0075] Optionally, each of the sub-parts 125 can be set up completely independently, or at least partially interconnected. In this embodiment, in order to facilitate manufacturing, processing, and replacement and maintenance of the sub-parts 125, each of the sub-parts 125 is set up completely independently.

[0076] Please see Figure 3 , Figure 4 and Figure 6 For example, the microprism 1241 is a recess formed on the light guide side 123 and recessed towards the interior of the light guide plate 12. The recess is formed on the guide side of the light guide plate 12 by methods including, but not limited to, laser milling, chemical etching, etc. Specifically, the microprism 1241 is, for example, a triangular prism. Correspondingly, each recess is a triangular groove. The microprism 1241 has curvature, and the curvature of the microprism 1241 is consistent with the curvature of the light guide side 123. Specifically, the light guide side 123 is bent around a first axis and a second axis, respectively; therefore, the microprism 1241 disposed on the light guide side 123 is bent around the first axis and the second axis respectively.

[0077] Please see Figure 6 For example, the apex angle of the microprism 1241 is α. α can be flexibly adjusted and set according to the light emission angle of the light source 20. Specifically, it can be obtained through ray tracing optimization so that the light is transmitted back and forth in the light guide plate 12 to the light emission surface 122, avoiding light leakage and resulting in low light utilization, and avoiding excessive light concentration and resulting in poor light emission uniformity.

[0078] Typically, the light emission angle of the light source 20 is, for example, ±30° in the vertical direction. Correspondingly, 60° ≤ a ≤ 120°. Specifically, a can be 60°, 70°, 80°, 85°, 90°, 95°, 100°, or 120°, etc., and can be flexibly adjusted and set according to actual needs.

[0079] For example, each microprism 1241 is configured with a curved structure. The center of curvature of the curved structure is located on the side of the curved structure facing the light source 20. The curved structure can be a circular arc structure, an elliptical arc structure, a parabolic structure, or an exponential structure, etc. In this embodiment, a circular arc structure is specifically used as an example for the microprism 1241, but it is not a limitation. This facilitates the guidance of light from the light source 20 to the light-emitting surface 122 and into the interior of the glass body 11.

[0080] Based on the aforementioned embodiments, the curvature centers of each microprism 1241 are located on the same axial plane. The axial plane is as follows: Figure 4 As shown in Z, the axial plane passes through the center of the light-emitting element 21.

[0081] More specifically, each microprism 1241 has an arc-shaped structure, and the center of each arc-shaped structure and the center of the light-emitting element 21 are located on the same straight line. In this way, the microprism array 124 and the light-emitting element 21 are projected along the thickness direction of the glass body 11, and the microprism array 124 is arranged radially or concentrically with respect to the center of the light-emitting element 21.

[0082] Research has found that in order to improve light utilization and the uniformity of ambient lighting, d, R, and L satisfy the following relationship: d∝R / L.

[0083] Where d is the distance between the main edges of two adjacent microprisms 1241, R is the radius of curvature of the light guide plate 12 bent around the first axis, and L is the distance between the center of the light source 20 and the apex of the microprism 1241.

[0084] According to the above formula, for light guide plates 12 of the same size, i.e., with the same radius of curvature R, d tends to decrease along the direction of light propagation. Taking the light-emitting element 21 as a reference, the light guide surface includes a front region close to the light-emitting element 21 and a rear region away from the light-emitting element 21. The rear region refers to the area on the light guide surface other than the front region. In other words, the microprisms 1241 arranged in the front region are sparsely distributed, meaning the distance d between the main edges of two adjacent microprisms 1241 is relatively large, which helps to reduce light loss and improve light utilization. Conversely, the microprisms 1241 arranged in the rear region are densely distributed, meaning the distance d between the main edges of two adjacent microprisms 1241 is relatively small, which helps to enhance the light emission ratio of the light guide plate 12.

[0085] According to the above formula, for light guide plates 12 of different sizes, the larger the radius of curvature R, the larger the spacing d can be. Furthermore, for adjacent microprisms 1241 with a larger distance L from the center of the light-emitting element 21, the smaller the spacing d.

[0086] For example, the microprism 1241 is specifically an asymmetric wedge prism, that is, the two principal planes of the principal prism are of different sizes. The cross-section of the microprism array 124 is serrated.

[0087] For example, the height of the microprism 1241 is h, where 20 μm ≤ h ≤ 50 μm. Specifically, h includes, but is not limited to, 20 μm, 25 μm, 26 μm, 380 μm, 30 μm, 35 μm, 40 μm, 45 μm, or 50 μm, which can be flexibly adjusted and set according to actual needs. When h is greater than 50 μm, the light extraction efficiency is high, but it will cause greater scattering loss; when h is less than 20 μm, the light extraction efficiency will decrease.

[0088] For example, the height h of the microprism 1241 in the front region is smaller than the height h of the microprism 1241 in the rear region. In other words, the microprisms 1241 are arranged in a manner that is lower in the front and higher in the back.

[0089] Specifically, the height h of the microprism 1241 in the front region is, for example, 20 μm ≤ h ≤ 30 μm. The height h of the microprism 1241 in the rear region is, for example, 30 μm ≤ h ≤ 50 μm. This enhances the reflection cycle.

[0090] Because the light intensity in the front region is sufficient, for example, the spacing d between adjacent microprisms 1241 in the front region is relatively large, the arrangement of microprisms 1241 is relatively sparse, and the height h of microprisms 1241 is relatively small. In this way, premature and excessive light extraction can be suppressed, ensuring that energy is efficiently transmitted to the far end.

[0091] Since the light intensity in the latter region is significantly reduced due to losses along the way, for example, the spacing d between adjacent microprisms 1241 in the latter region is small, the microprisms 1241 are relatively densely arranged, and the height h of the microprisms 1241 is relatively large. In this way, by increasing the extraction unit density and increasing the height of the microprisms 1241, the capture of the remaining light energy is enhanced, the light decay is compensated, and the uniformity of the entire light-emitting surface 122 is ensured.

[0092] According to Snell's law: n 导光板12 *sinθ 入射 =n 空气 *sinθ 折射 .

[0093] n is the refractive index of the material.

[0094] n 导光板12 This indicates the refractive index of the light guide plate 12 material. The light guide plate 12 can be made of PMMA acrylic, PC plastic or glass.

[0095] PMMA (acrylic): n≈1.49.

[0096] PC (polycarbonate): n≈1.58.

[0097] Glass: n≈1.5~1.9 (depending on composition), the refractive index n of ultra-clear glass is about 1.5~1.52.

[0098] n 空气 n represents the refractive index of air. 空气 ≈1.0 (strict value is 1.0003).

[0099] Function: When light enters the air (low refractive index) from the light guide plate 12 (high refractive index), the difference in refractive index will cause the light to be deflected or totally reflected.

[0100] Among them, the light guide plate 12, for example, is made of ultra-white glass, with n≈1.5 and the critical angle for total internal reflection is: θc=arcsin(1 / n)≈41.8°.

[0101] θ is the angle of incidence when the light ray strikes the microprism 1241, which is the angle between the light ray and the normals to the upper and lower surfaces of the light guide plate. The incident light ray must satisfy the condition of total internal reflection within the light guide plate 12: θ > θc. That is, the angle of incidence θ must be greater than the critical angle θc, so that total internal reflection occurs when the light ray passes through the microprism 1241, thus preventing the light ray from escaping prematurely. Optionally, θ ≈ 42°~45°. This ensures that the light ray propagates within the light guide plate 12, rather than escaping directly from the upper and lower surfaces.

[0102] For example, in this embodiment, the light guide plate 12 is preferably made of a material with a high refractive index, such as PC, in order to reduce the critical angle θc, thereby expanding the range of total internal reflection angle.

[0103] Please see Figure 6 In this design, the angle between the normal to the side of the microprism 1241 furthest from the light source 20 and the side of the light guide plate 12 is set as β. For example, when β≈θ, it matches the direction of light propagation, ensuring that the light, after refraction by the microprism 1241, propagates backward. Therefore, the closer the microprism 1241 is to the light source 20, the larger β needs to be to fully absorb large-angle light. Considering that light smaller than the critical angle will escape, for example, the angle β between the normal to the side of the microprism 1241 furthest from the light source 20 and the side of the light guide plate 12 is designed to be β≥45°, specifically, for example, 45°, 46°, 47°, 48°, 50°, or 55°, etc. β can be flexibly adjusted and set according to the actual incident angle, and is not limited here. It should be noted that the microprism 1241 in the initial position refers to the microprism 1241 closest to the light source 20.

[0104] Please refer to the following: Figure 6 Specifically, the angle between the normal of the side of one microprism 1241 that is relatively far from the light source 20 and the side of the light guide plate 12 is β1, and the angle between the normal of the side of the other microprism 1241 that is relatively far from the light source 20 and the side of the light guide plate 12 is β2. Since the microprism 1241 with the angle β1 is closer to the light source 20 than the microprism 1241 with the angle β2, therefore, β1 > β2.

[0105] Among them, the direction of light propagation is changed by the refraction of the curved surface, and the light is gradually guided toward the light-emitting surface 122.

[0106] Of the two light-guiding sides 123, one light-guiding side 123 is concave and the other light-guiding side 123 is convex. Wherein, R1 is the radius of curvature of the convex surface and R2 is the radius of curvature of the concave surface; L is the distance between the center of the light-emitting source 20 and the apex of the microprism 1241.

[0107] For example, R1 ≈ 0.5L~0.8L. Thus, a smaller R1 results in a relatively steep angle, which increases the deflection of light towards the concave surface and lengthens the optical path. When R1 > 0.8L, the angle is too flat, resulting in energy overflow, low efficiency, and low light utilization; when R1 < 0.5L, the angle is too steep, leading to increased loss, poor uniformity, and poor tolerance.

[0108] For example, R2 ≈ 1.2L~1.5L. Thus, R2 is relatively large and flat, reducing light divergence and maintaining light energy concentration.

[0109] In summary, the light-emitting glass 10, the glass assembly, and the article in this embodiment have at least the following beneficial effects:

[0110] High luminous efficiency and uniform illumination: Improved light utilization and optimized uniformity. The number of total internal reflections within the light guide plate 12 is reduced, gradually guiding light energy out of the light surface 122 (such as the rear side or a specific area), achieving a light extraction efficiency of over 80%. This ensures uniform illumination across the entire area, avoiding excessive brightness in the central region or excessive darkness at the edges.

[0111] Curved surface adaptability: Both light guide sides 123 adopt an arc design (curvature radius R1 / R2), which allows the light guide plate 12 to fit complex shapes such as automotive interiors and architectural curved surfaces, while maintaining the stability of the light path and avoiding light spot distortion caused by bending.

[0112] Lightweight and space-adaptable: The compact structure makes it suitable for scenarios with demanding space requirements.

[0113] Concealed installation: Light enters through the incident surface 121 of the light guide plate 12 and exits evenly from the light emitting surface 122, eliminating the need for an exposed light source and achieving an elegant design that "shows the light but not the lamp".

[0114] Mass production feasibility: It can be mass-produced through injection molding (PMMA / PC) or etching (glass) processes, with controllable costs. Gradient parameter design (such as the gradient of h and d) can be integrated into the mold, reducing post-processing steps.

[0115] It supports composite use with functional film layers such as diffusion film and brightness enhancement film to further improve performance without reconstructing the light guide plate 12.

[0116] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0117] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A luminescent glass, characterized in that, include: A glass body, wherein the sides and / or interior of the glass body are provided with a light-emitting layer; and A light guide plate is provided with an incident surface, a light emitting surface, and two light guiding side surfaces. The incident surface and the light emitting surface are arranged opposite to each other. The incident surface is used to face the light source, and the light emitting surface is arranged to face the end face of the glass body. The two light guiding side surfaces are arranged opposite to each other and are connected between the incident surface and the light emitting surface. Each light guiding side surface is provided with a microprism array, which includes a plurality of microprisms arranged sequentially along the direction from the incident surface to the light emitting surface.

2. The luminescent glass according to claim 1, characterized in that, The light guide side is provided with microprisms at various locations along the direction from the incident surface to the light emitting surface.

3. The luminescent glass according to claim 1, characterized in that, The light guide side is configured as a curved surface that bends around a first axis, which is parallel to the incident surface and the light emitting surface.

4. The luminescent glass according to claim 3, characterized in that, The glass body is bent around the second axis, and the light-guiding side is also bent around the second axis, with the curvature of the light-guiding side being the same as that of the glass body.

5. The luminescent glass according to claim 1, characterized in that, The light-emitting surface is spaced apart from the end face of the glass body; the light-emitting surface is provided with a plurality of protrusions, which protrude toward the end face of the glass body, and the plurality of protrusions are arranged sequentially along the thickness direction of the light guide plate.

6. The luminescent glass according to claim 1, characterized in that, The light guide plate abuts against the end face of the glass body or is fixedly connected by optical adhesive; or the light guide plate is integrated with the glass body.

7. The luminescent glass according to claim 1, characterized in that, The thickness of the light guide plate either increases or remains constant in the direction from the incident surface to the emitting surface.

8. The luminescent glass according to claim 1, characterized in that, The light source includes a light-emitting element and a circuit board. The light-emitting element is mounted on the circuit board, and the light-emitting center of the light-emitting element is directly opposite the incident surface.

9. The luminescent glass according to claim 8, characterized in that, The light-emitting elements are multiple, and the multiple light-emitting elements are arranged at intervals in sequence along a direction parallel to the light-guiding side surface and the incident surface; the microprism array on each light-guiding side surface is configured as multiple, and the multiple microprism arrays on each light-guiding side surface are configured to correspond one-to-one with the multiple light-emitting elements.

10. The luminescent glass according to claim 9, characterized in that, The light guide plate includes multiple sub-sections, which are arranged sequentially at intervals along the end face of the glass body. Each sub-section is provided with an incident surface, a light emitting surface, and two light guiding side surfaces. Each light-emitting element is positioned corresponding to each sub-section.

11. The luminescent glass according to claim 8, characterized in that, The microprism is a recess formed on the side of the light guide and facing the interior of the light guide plate; the microprism is a triangular prism.

12. The luminescent glass according to claim 11, characterized in that, The apex angle of the microprism is α, where 60° ≤ α ≤ 120°.

13. The luminescent glass according to claim 11, characterized in that, Each of the microprisms is configured with a curved structure, and the center of curvature of the curved structure is located on the side of the curved structure facing the light-emitting element.

14. The luminescent glass according to claim 13, characterized in that, The curvature centers of each of the microprisms are located on the same axial plane, which passes through the center of the light-emitting element.

15. The luminescent glass according to claim 14, characterized in that, Each of the microprisms has an arc-shaped structure, and the center of each arc-shaped structure and the center of the light-emitting element are located on the same straight line.

16. The luminescent glass according to claim 1, characterized in that, The distance between the main edges of two adjacent microprisms is set as d; d tends to decrease along the propagation direction of light along the light guide plate.

17. The luminescent glass according to claim 1, characterized in that, The height of the microprism is h, where 20μm≤h≤50μm.

18. The luminescent glass according to claim 1, characterized in that, Of the two light-guiding sides, one light-guiding side is concave and the other light-guiding side is convex. R1≈0.5L~0.8L, R2≈1.2L~1.5L; Where R1 is the radius of curvature of the convex surface, R2 is the radius of curvature of the concave surface, and L is the distance between the center of the light source and the apex of the microprism.

19. A glass assembly, characterized in that, The light-emitting glass includes the light-emitting glass as described in any one of claims 1 to 18, and further includes a light-emitting light source, the light-emitting light source being disposed at the edge of the light-emitting glass, such that the generated light is incident into the light-emitting glass.

20. An article, characterized in that, The article comprises the glass assembly as described in claim 19.

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