Laminated glass

Abstract

The purpose of the present invention is to improve the appearance of a mark in laminated glass having a scattering section that serves as the mark. This laminated glass is provided with a first glass plate, a second glass plate, and an intermediate film that is positioned between the first glass plate and the second glass plate and bonds the first glass plate and the second glass plate, the optical reflection layer reflects light incident from the first glass plate side; the shielding layer is arranged closer to the second glass plate side than the optical reflection layer in a cross-sectional view, and at least a part of the shielding layer overlaps the optical reflection layer in a plan view; and a scattering part located at a position overlapping a region in which the optical reflective layer is disposed in a plan view.

Description

Technical Field

[0001] The present invention relates to laminated glass. Background Art

[0002] The surface of glass sheets used in automobiles and other applications may be marked with markings such as model numbers. These markings are formed, for example, by preparing a sandblasting device equipped with a nozzle capable of discharging a compressed fluid containing sand, and spraying the compressed fluid from the nozzle of the sandblasting device onto the surface of the glass sheet to roughen the surface of the glass sheet. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2018-193258 Summary of the Invention Technical problem to be solved by the invention

[0004] However, the appearance of conventional markings still has room for improvement.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to improve the appearance of the marking in a laminated glass having a scattering portion serving as a marking. Means of solving technical problems

[0006] A laminated glass according to one embodiment of the present disclosure is a laminated glass comprising a first glass sheet, a second glass sheet, and an interlayer film positioned between the first glass sheet and the second glass sheet to bond the first and second glass sheets together. The laminated glass includes an optically reflective layer that reflects light incident from the first glass sheet, a shielding layer that is positioned closer to the second glass sheet than the optically reflective layer in a cross-sectional view and at least partially overlaps with the optically reflective layer in a plan view, and a scattering portion that overlaps with a region where the optically reflective layer is positioned in a plan view. Effects of the Invention

[0007] According to one embodiment of the present disclosure, the design of the marking can be improved in laminated glass having the scattering portion serving as the marking. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Schematic diagram showing the HUD system of the first embodiment. Figure 2 It is a diagram illustrating the laminated glass according to the first embodiment. Figure 3 yes Figure 2 (a) is a partially enlarged plan view of the scattering portion and its vicinity. Figure 4 This is a cross-sectional view illustrating a laminated glass according to Modification 1 of the first embodiment. Figure 5 This is a cross-sectional view illustrating a laminated glass according to Modification 2 of the first embodiment. Figure 6 This is a cross-sectional view illustrating a laminated glass according to Modification 3 of the first embodiment. DETAILED DESCRIPTION

[0009] The following describes embodiments of the present invention with reference to the accompanying drawings. In each of the drawings, identical components are denoted by the same reference numerals, and duplicate descriptions of identical components are sometimes omitted. Furthermore, in each of the drawings, the size or shape of the components may be exaggerated to facilitate understanding of the present invention.

[0010] The term "vehicle" typically refers to an automobile, but also refers to any mobile object capable of carrying laminated glass, including trains, ships, and airplanes.

[0011] In addition, a bird's-eye view refers to observing an object from a normal direction passing through the center of gravity of a principal surface of the object. The shape seen at this time is called a planar shape.

[0012] In addition, the expressions "upper" and "lower" refer to upper and lower when the laminated glass is mounted on a vehicle.

[0013] The outermost side of a predetermined member is referred to as a "peripheral edge," and a region of the predetermined member that is inscribed in the "peripheral edge" and has a width is referred to as a "peripheral portion."

[0014] <First embodiment> [HUD system] Figure 1 Schematic diagram showing the HUD system of the first embodiment. Figure 1 The HUD system 1 shown includes laminated glass 10, a light source 50, a first optical system 60, an image display element 70, a second optical system 80, and a concave mirror 90. The HUD system 1 is a head-up display system for a vehicle that displays a virtual image on the exterior side of the laminated glass 10. Furthermore, the first optical system 60 and the second optical system 80 may be provided in the HUD system 1 as needed.

[0015] Laminated glass 10 is, for example, a windshield for a vehicle, and P-polarized visible light is incident from the vehicle interior. Laminated glass 10 includes an optical reflective layer 14 in the region where the P-polarized visible light reflected by concave mirror 90 is incident. Optical reflective layer 14 need only be formed in at least the region illuminated by P-polarized light emitted by light source 50, and may also be formed on the entire surface of laminated glass 10.

[0016] Light source 50, if it is a light source that emits P-polarized visible light, can be a light-emitting diode or a laser. Light source 50 may also include optical components such as a polarizer or lens that converts S-polarized light into P-polarized light. Light source 50 is composed of, for example, three light sources: a red light source, a green light source, and a blue light source.

[0017] The first optical system 60 is composed of, for example, a prism or lens that combines light emitted from multiple light sources. The image display element 70 is an element that generates an intermediate image and is, for example, a liquid crystal display element or an organic light-emitting element. The second optical system 80 is composed of, for example, a lens or a reflective mirror. The concave mirror 90 is an optical component that reflects the intermediate image using a reflective surface having a predetermined curvature. It is positioned closest to the laminated glass 10 among the optical components positioned in the optical path between the light source 50 and the laminated glass 10.

[0018] In the HUD system 1, light emitted from the light source 50 passes through the first optical system 60 and reaches the image display element 70, where it forms an intermediate image. The intermediate image formed by the image display element 70 is magnified by the second optical system 80 and the concave mirror 90, and then illuminates the optical reflective layer 14 of the laminated glass 10. The intermediate image illuminated by the optical reflective layer 14 is primarily reflected by the optical reflective layer 14 and guided to the passenger's viewpoint I. The passenger sees the intermediate image as a virtual image V (HUD image) in front of the laminated glass 10. For example, the passenger is the driver of the vehicle.

[0019] Figure 1 Here, θ is the incident angle of P-polarized visible light emitted from light source 50 when entering optical reflective layer 14 via a predetermined optical system. The incident angle θ may be 57 degrees (Brewster angle), larger than 57 degrees, or smaller than 57 degrees.

[0020] The HUD system 1 may have any other configuration as long as it includes at least the laminated glass 10 and the light source 50. The HUD system 1 may be a laser scanning system in which a light scanning unit composed of a MEMS (Micro Electro Mechanical Systems) or the like scans laser light.

[0021] While the above example illustrates a HUD system with a light source emitting P-polarized visible light, the laminated glass of the present invention can also be used in HUD systems with a light source emitting S-polarized visible light. In this case, a layer with a high reflectivity for the S-polarized component is used as the optical reflective layer 14. Alternatively, the laminated glass of the present invention can also be used in HUD systems with light sources emitting both P-polarized and S-polarized light.

[0022] [Laminated glass] Figure 2FIG. 1 is a diagram illustrating a laminated glass according to a first embodiment. Figure 2 (a) is a diagram schematically showing the laminated glass viewed from outside the vehicle. Figure 2 (b) is along Figure 2 (a) is a partial cross-sectional view along line AA.

[0023] like Figure 2 As shown, laminated glass 10 is a laminated glass for a vehicle including a first glass sheet 11, a second glass sheet 12, an interlayer 13, an optical reflective layer 14, a shielding layer 15, and a scattering portion 16. Laminated glass 10 can be used, for example, in a vehicle windshield.

[0024] The first glass plate 11 and the second glass plate 12 are bonded via the interlayer film 13. The first glass plate 11 is disposed on a first side that becomes the vehicle interior when the laminated glass 10 is installed in a vehicle, and the second glass plate 12 is disposed on a second side that becomes the vehicle exterior when the laminated glass 10 is installed in a vehicle.

[0025] For example, the laminated glass 10 may have a multi-curved shape, curving in both the vertical and horizontal directions when installed on a vehicle. However, a multi-curved shape is not limited to a shape curving in both the vertical and horizontal directions when installed on a vehicle, and also includes a shape curving in two or more different directions. Alternatively, the laminated glass 10 may have a single-curved shape, curving only in the vertical or horizontal direction when installed on a vehicle. However, a single-curved shape is not limited to a shape curving only in the vertical or horizontal direction when installed on a vehicle, and also includes a shape curving only in any one direction.

[0026] The laminated glass 10 is preferably curved to convexly extend toward the vehicle exterior. Specifically, the second glass sheet 12 is preferably curved to convexly extend toward the side opposite to the interlayer film 13 , and the first glass sheet 11 is preferably curved to convexly extend toward the interlayer film 13 .

[0027] The first glass sheet 11 is the interior glass sheet that becomes the vehicle interior side (first side) when the laminated glass 10 is installed in a vehicle. The first glass sheet 11 is bendable. The first glass sheet 11 includes a fourth surface 114 located opposite the interlayer film 13 and a third surface 113 located on the side of the interlayer film 13. The first glass sheet 11 includes an upper edge, a lower edge, and two side edges connecting the upper and lower edges.

[0028] The second glass sheet 12 is the vehicle exterior glass sheet that faces the vehicle exterior (second side) when the laminated glass 10 is installed in a vehicle. The second glass sheet 12 can also be curved. The second glass sheet 12 has a second surface 122 located on the side of the interlayer film 13 and a first surface 121 located opposite the interlayer film 13. Like the first glass sheet 11, the second glass sheet 12 has an upper edge, a lower edge, and two side edges connecting the upper and lower edges when viewed from above.

[0029] When the laminated glass 10 has a curved shape, the minimum value of the radius of curvature is preferably 500 mm or more and 100,000 mm or less. The radii of curvature of the first glass sheet 11 and the second glass sheet 12 may be the same or different. If the radii of curvature of the first glass sheet 11 and the second glass sheet 12 are different, the radius of curvature of the first glass sheet 11 is preferably smaller than that of the second glass sheet 12. The radius of curvature of the portion where the scattering portion 16 is located may be as described above.

[0030] The first glass plate 11 and the second glass plate 12 are a pair of glass plates facing each other, with an interlayer film 13 positioned between them. The first glass plate 11 and the second glass plate 12 are fixed with the interlayer film 13 sandwiched therebetween. The interlayer film 13 serves to bond the first glass plate 11 and the second glass plate 12 together.

[0031] The outer side surfaces of the interlayer film 13 are preferably edge-treated. Specifically, the outer side surfaces of the interlayer film 13 are preferably treated so as not to significantly protrude from the outer side surfaces of the first and second glass sheets 11, 12. To avoid deteriorating the appearance, it is preferable that the outer side surfaces of the interlayer film 13 protrude by 150 μm or less from the outer side surfaces of the first and second glass sheets 11, 12. The first and second glass sheets 11, 12, and interlayer film 13 will be described in detail later.

[0032] The optical reflective layer 14 is a layer that reflects light incident from the side of the first glass plate 11. The optical reflective layer 14 is transparent to visible light. Figure 2 In the example, the optical reflective layer 14 is disposed on the fourth surface 114 of the first glass plate 11 .

[0033] In the case of a HUD system using P-polarized light, the optical reflective layer 14 is a P-polarized light reflective layer. The visible light reflectivity of the P-polarized light reflective layer when P-polarized visible light is incident at an incident angle of 57 degrees is preferably 10% or more and 30% or less. A visible light reflectivity of 10% or more can improve the visibility of the HUD image. A visible light reflectivity of 30% or less can reduce the reflection of objects arranged in the surrounding area. In addition, in order to achieve a suitable HUD system while reducing the reflection of objects arranged in the surrounding area, the visible light reflectivity of the optical reflective layer 14 at an incident angle of 57 degrees is preferably 12% or more and 28% or less, and more preferably 15% or more and 26% or less.

[0034] The visible light reflectance of the P-polarized light reflecting layer is calculated by measuring the spectral reflectance described in ISO 9050:2003 using P-polarized light of a visible wavelength at an incident angle θ of 57 degrees as incident light and then calculating the visible light reflectance using the calculation method described in ISO 9050:2003.

[0035] The P-polarized light reflecting layer may be, for example, a birefringent interference-type polarizer composed of a polymer multilayer film containing two or more polymers with different refractive indices, a polarizer having a fine concave-convex structure known as a wire grid type, or a film including a polarizer composed of a cholesteric liquid crystal layer. When a P-polarized light reflecting film is used as the P-polarized light reflecting layer, the thickness of the P-polarized light reflecting film is preferably 25 μm to 200 μm. The thickness of the P-polarized light reflecting film is more preferably 150 μm or less, and even more preferably 100 μm or less.

[0036] Using a P-polarized light reflective coating as the P-polarized light reflective layer is preferable to using a P-polarized light reflective film because it provides superior visibility in low-light conditions such as at night or at a wider viewing angle. Furthermore, using a P-polarized light reflective coating is preferred because it allows for easier control of film thickness and makes it easier to create a smooth reflective surface, thereby minimizing HUD image distortion.

[0037] When a P-polarized light reflecting coating is used as the P-polarized light reflecting layer, the thickness of the P-polarized light reflecting coating is, for example, 50 nm to 500 nm. The P-polarized light reflecting coating can be formed on the surface of the glass plate by, for example, sputtering or CVD.

[0038] Examples of P-polarized light reflective coatings include infrared reflective coatings such as those with a laminated structure of a high-refractive index film / low-refractive index film, or laminated structures of metal films such as silver and dielectric films, or Low-e films composed of transparent conductive films such as ITO. Of these, laminated structures of a high-refractive index film / low-refractive index film are preferred because they can maintain a high level of P-polarized light reflectivity. In the case of a two-layer structure of the high-refractive index film / low-refractive index film, for example, the high-refractive index film and the low-refractive index film are laminated sequentially on the fourth surface 114 of the first glass plate 11. In the case of a three-layer structure of the high-refractive index film / low-refractive index film, the high-refractive index film and the low-refractive index film are laminated alternately in any order on the fourth surface 114 of the first glass plate 11.

[0039] The refractive index of the high refractive index film is 1.8 or more, 1.9 or more, 2.0 or more, or 2.1 or more, preferably 2.5 or less, at a wavelength of 550 nm. The refractive index of the low refractive index film is typically less than 1.8, 1.7 or less, or 1.6 or less, preferably 1.2 or more, at a wavelength of 550 nm.

[0040] Specifically, the high-refractive-index film preferably comprises at least one of the following: oxides of Zr, Nb, and Sn; mixed oxides of Ti, Zr, Nb, Si, Sb, Sn, Zn, and In; nitrides of Si and Zr; and mixed nitrides of Si and Zr. Furthermore, the low-refractive-index film preferably comprises at least one of silicon oxide, silicon oxynitride, silicon oxycarbide, or a mixture thereof. Examples of the mixture include a mixed oxide of silicon and aluminum and a mixed oxide of silicon and zirconium.

[0041] The first layer of the high refractive index film is optionally composed of one or more sublayers. The thickness (geometric film thickness) of the first layer of the high refractive index film is preferably 50 nm or more and 100 nm or less, particularly preferably 60 nm or more and 80 nm or less. The first layer of the low refractive index film is optionally composed of one or more sublayers. The thickness (geometric film thickness) of the first layer of the low refractive index film is preferably 70 nm or more and 160 nm or less, particularly preferably 100 nm or more and 140 nm or less.

[0042] In the case of a HUD system using S-polarized light, the optical reflective layer 14 is an S-polarized light reflective layer. The visible light reflectivity of the S-polarized light reflective layer when an incident angle of 57 degrees and S-polarized visible light is incident is preferably 18% or more and 30% or less. A visible light reflectivity of 18% or more can improve the visibility of the HUD image. A visible light reflectivity of 30% or less can reduce the reflection of objects arranged in the surrounding area. In addition, in order to achieve a suitable HUD system while reducing the reflection of objects arranged in the surrounding area, the visible light reflectivity of the optical reflective layer 14 at an incident angle of 57 degrees is preferably 12% or more and 28% or less, and more preferably 15% or more and 26% or less.

[0043] The visible light reflectivity of the S-polarized light reflecting layer is calculated by measuring the spectral reflectivity described in ISO 9050:2003 using S-polarized light of a visible wavelength at an incident angle θ of 57 degrees as the incident light, and then calculating the visible light reflectivity using the method for calculating the same as described in ISO 9050:2003. Examples of the S-polarized light reflecting layer include optical interference films formed by alternating layers of high-refractive-index materials such as TiO2 and low-refractive-index materials such as SiO2. Alternatively, the S-polarized light reflecting layer may be a film bonded to a glass plate using an adhesive layer.

[0044] The optical reflective layer 14 may be a layer transparent to visible light having a holographic function.

[0045] In a HUD system having a light source that emits both P-polarized and S-polarized light, the optical reflective layer 14 is a P-polarized light reflective layer. In this case, the P-polarized light reflective layer preferably has a visible light reflectivity of 10% to 30% when P-polarized visible light is incident at an angle of incidence of 57 degrees, and preferably has a visible light reflectivity of 18% to 30% when S-polarized visible light is incident at an angle of incidence of 57 degrees. The reasons are as described above.

[0046] The shielding layer 15 is disposed closer to the second glass plate 12 than the optical reflective layer 14 in a cross-sectional view, and at least a portion thereof overlaps with the optical reflective layer 14 in a plan view. Figure 2 In the example of FIG, the shielding layer 15 is disposed on the second surface 122 of the second glass plate 12. The shielding layer 15 is an opaque layer.

[0047] The shielding layer 15 may be provided on a portion or the entire lower peripheral portion of the laminated glass 10 in a plan view. In addition to the lower peripheral portion, the shielding layer 15 may also be provided on the side peripheral portions and the upper peripheral portion of the laminated glass 10 in a plan view. Figure 2 In the example of FIG, the shielding layer 15 is provided in a strip shape on the lower peripheral edge portion, the side peripheral edge portion, and the upper peripheral edge portion of the laminated glass 10 in a plan view.

[0048] The width of the shielding layer 15 when viewed from above can be appropriately set. Excluding the information transceiver area 19 described later, the width of the shielding layer 15 when viewed from above is, for example, approximately 10 mm to 350 mm, preferably 20 mm to 300 mm, and more preferably 30 mm to 280 mm. If the shielding layer 15 is provided on the side and top edges in addition to the bottom edge, the bottom edge may be wider than the side and top edges.

[0049] The shielding layer 15 is, for example, an opaque colored ceramic layer. Its color is arbitrary, but preferably a dark color such as black, brown, gray, or dark navy blue, with black being more preferred. The shielding layer 15 can be formed, for example, by applying a ceramic color paste containing a fusible glass frit containing a black pigment to a glass plate by screen printing or the like, followed by firing, but is not limited to this embodiment. The shielding layer 15 can also be formed by applying an organic ink containing a black or dark pigment to a glass plate by screen printing or the like, followed by drying.

[0050] The presence of the opaque shielding layer 15 on the laminated glass 10 can suppress the degradation of the adhesive that holds the bracket for fixing the information transceiver on the laminated glass 10 and the adhesive made of resin such as polyurethane that holds the peripheral edge of the laminated glass 10 on the vehicle body due to ultraviolet rays. In addition, the adhesive portion is not visible from inside or outside the vehicle, thereby improving the appearance.

[0051] The scattering portion 16 scatters incident light and is located at a position overlapping the area where the optical reflective layer 14 is disposed in a plan view. Specifically, the scattering portion 16 is located where light emitted by the light source 50 of the HUD system 1 can be irradiated. Furthermore, the scattering portion 16 is located within the opening 15x provided in the shielding layer 15 in a plan view. Therefore, the scattering portion 16 is visible from both the first glass plate 11 and the second glass plate 12.

[0052] Scattering portion 16 includes text, graphics, and / or symbols, and is a visually recognizable mark. For example, scattering portion 16 may be a mark indicating compliance with safety standards. Scattering portion 16 may also be a mark indicating a manufacturer's code, product number, date of manufacture, etc. Scattering portion 16 may also be a mark used for advertising.

[0053] Even when the light emitted by the HUD system 1's light source 50 is not irradiated, and only sunlight, for example, is applied, the scattering portion 16 can be seen from the first and second glass plates 11 and 12. However, when the light emitted by the HUD system 1's light source 50 strikes the scattering portion 16, the light is scattered by the scattering portion 16, allowing the marking to be seen in a more aesthetically pleasing manner. In other words, the marking's appearance can be improved. By utilizing the light source 50 of the HUD system 1, a separate light source is unnecessary, effectively expanding the interior space and reducing costs. For example, by varying the color of the light emitted from the light source 50 to the scattering portion 16, markings of various colors can be displayed. Furthermore, since the scattering portion 16 is located within the opening 15x provided in the shielding layer 15 when viewed from above, the line of sight is guided, making the marking easier to see. When viewing the marking from the outside of the vehicle, it is preferable that the light emitted by the light source 50 be P-polarized light, as this minimizes reflection from the glass.

[0054] The scattering portion 16 can be formed by etching the surface of the glass by, for example, sandblasting in which particles are sprayed onto the surface of the glass. Figure 2 In the example shown in FIG, the optical reflective layer 14 and the fourth surface 114 of the first glass plate 11 are etched by sandblasting to form an "M" mark as the scattering portion 16. The scattering portion 16 may also be formed by a method other than etching the glass surface.

[0055] Figure 2 In the example shown in FIG, the scattering portion 16 is surrounded by the optical reflective layer 14 in a plan view. Specifically, an opening having the same shape as the scattering portion 16 is formed in the optical reflective layer 14, and the scattering portion 16 is located within this opening. In a plan view, the scattering portion 16 overlaps with the area where the optical reflective layer 14 is located, but does not overlap with the optical reflective layer 14 itself.

[0056] The method for forming the scattering portion 16 is not limited to the sandblasting method. For example, a method of forming projections and depressions by partially dissolving the surface of the glass with a chemical such as hydrofluoric acid may be used.

[0057] The surface roughness Ra of the scattering portion 16 is greater than the surface roughness Ra of the fourth surface 114 of the first glass plate 11. The fourth surface 114 of the first glass plate 11 is smooth. The surface roughness Ra of the scattering portion 16 is preferably 1 μm or greater and 100 μm or less. When the surface roughness Ra of the scattering portion 16 is 1 μm or greater, it is easily visible as a mark. When the surface roughness Ra of the scattering portion 16 is 100 μm or less, the strength of the first glass plate 11 is maintained and the problem of light emitted by the light source 50 flaring on the scattering portion 16 is less likely to occur. The surface roughness Ra is more preferably 3 μm or greater and 80 μm or less, and even more preferably 5 μm or greater and 60 μm or less. The surface roughness Ra refers to the arithmetic mean roughness defined in JIS B0601 (2013).

[0058] The haze value of the scattering portion 16 is greater than that of the first glass plate 11. The haze value of the first glass plate 11 is substantially zero. The haze value of the scattering portion 16 is preferably 40% or greater. A haze value of 40% or greater makes the scattering portion 16 easily visible as a marking. A haze value of 90% or less is preferred for the scattering portion 16 from the perspective of glass strength, and also reduces the risk of glare from the light source 50 on the scattering portion 16. The haze value is more preferably 50% or greater and 90% or less, and even more preferably 60% or greater and 80% or less. The haze value can be measured using a halogen lamp C light source in accordance with JIS K7136:2000.

[0059] Figure 3 yes Figure 2 (a) is a partially enlarged plan view of the scattering portion and its vicinity. The distance L between the scattering portion 16 and the opening 15x is preferably greater than 5 mm when viewed from above. When the distance L is greater than 5 mm, the scattering portion 16 is less likely to be covered by the background shielding layer 15, and the scattering portion 16 is easily visible from an oblique direction or from outside the vehicle. From the perspective of optical distortion, the distance L is preferably less than 20 mm. The distance L is more preferably greater than 5 mm and less than 20 mm, more preferably greater than 6 mm and less than 18 mm, further preferably greater than 6 mm and less than 17 mm, and even more preferably greater than 7 mm and less than 15 mm.

[0060] The laminated glass 10 may include an information transceiver area 19. The information transceiver area 19 is disposed within the opening of the shielding layer 15 of the laminated glass 10. The information transceiver area 19 is disposed, for example, at the upper peripheral edge of the laminated glass 10. The information transceiver area 19 is an area for transmitting and / or receiving information, such as information equipment that processes visible light, such as a visible light camera or illuminance sensor, or information equipment that processes infrared light, such as a LiDAR (Light Detection and Ranging) system. That is, when the laminated glass 10 is mounted on a vehicle, information equipment may be disposed on the interior side of the information transceiver area 19. To achieve high optical quality and enable good information transmission and reception, the optical reflective layer 14 is not disposed within the information transceiver area 19.

[0061] A HUD display area R used in a head-up display (HUD) is defined on a portion of the laminated glass 10. The HUD display area R is part of the area where light from the HUD system's light source is incident, reflecting projected images from the vehicle interior to display information. The HUD display area R represents the portion of the area where light from the light source 50 illuminates the laminated glass 10 when the HUD display position is moved within the viewing area in accordance with SAE J1757-2(2018). Furthermore, the location where the scattering portion 16 is formed also represents part of the area where light from the light source 50 illuminates the laminated glass 10.

[0062] The HUD display area R can be arranged in an area where the optical reflective layer 14 and the shielding layer 15 overlap in a plan view. The HUD display area R can also be arranged in multiple locations within the area where the optical reflective layer 14 and the shielding layer 15 overlap in a plan view. In addition, other HUD display areas different from the HUD display area R can be arranged at locations that do not overlap with the shielding layer 15 in a plan view.

[0063] In this manner, in the laminated glass 10, the area where the optical reflective layer 14 and the shielding layer 15 overlap in a planar view defines the HUD display area R. By placing the opaque shielding layer 15 at a position that serves as the background of the HUD display area R, good contrast is achieved, improving the visibility of the HUD image. Furthermore, the light from the HUD system's light source makes the scattering portion 16 more conspicuous, improving the appearance. For better visibility of the HUD image, it is preferable that the shielding layer 15 be black.

[0064] The first glass plate 11 , the second glass plate 12 , and the intermediate film 13 will be described in detail below.

[0065] [glass plate] The first glass plate 11 and the second glass plate 12 can be either inorganic glass or organic glass. Examples of inorganic glass that can be used without particular limitation include soda-lime glass, aluminum silicate glass, borosilicate glass, alkali-free glass, and quartz glass. The second glass plate 12, located on the outside of the laminated glass 10, is preferably inorganic glass from the perspective of scratch resistance, and preferably soda-lime glass from the perspective of formability. When the first glass plate 11 and the second glass plate 12 are soda-lime glass, transparent glass, green glass containing an iron content exceeding a specified amount, and dark green glass are preferably used. Alternatively, ultraviolet or infrared absorbing glass may be used, and transparent glass is more preferably used, but glass plates colored to a degree that does not impair transparency may also be used. Furthermore, using borosilicate glass for the second glass plate 12 can increase the resistance of the laminated glass 10 to flying stones.

[0066] Inorganic glass can be either unstrengthened glass or tempered glass. Unstrengthened glass is formed by shaping molten glass into a flat plate and slowly cooling it. Tempered glass is glass with a compressive stress layer formed on the surface of the unstrengthened glass. Furthermore, tempered glass can reduce residual stress by isotropically distributing stress.

[0067] Tempered glass can be either physically tempered glass, such as air-cooled tempered glass, or chemically tempered glass. In the case of physically tempered glass, for example, a glass sheet uniformly heated during bending is subjected to a non-slow cooling operation, such as rapid cooling from a temperature near its softening point, to create a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior of the glass, thereby strengthening the glass surface.

[0068] In the case of chemically strengthened glass, for example, compressive stress is generated on the glass surface by an ion exchange method or the like after bending, thereby strengthening the glass surface.

[0069] On the other hand, examples of the material of organic glass include polycarbonate, acrylic resins such as polymethyl methacrylate, and transparent resins such as polyvinyl chloride and polystyrene.

[0070] The first and second glass sheets 11, 12 are not limited to trapezoidal or rectangular shapes and can be formed into various shapes and curvatures. The first and second glass sheets 11, 12 can be bent using gravity forming, press forming, roll forming, and other methods. The forming method for the first and second glass sheets 11, 12 is also not particularly limited. For example, in the case of inorganic glass, glass sheets formed using a float process or other methods are preferred.

[0071] The thickness of the second glass plate 12 at its thinnest portion is preferably 1.1 mm to 3 mm. A thickness of 1.1 mm or greater provides sufficient strength, such as stone flying resistance. A thickness of 3 mm or less prevents excessive weight increase in the laminated glass 10, which is preferable from the perspective of vehicle fuel efficiency. The thickness of the second glass plate 12 at its thinnest portion is more preferably 1.8 mm to 2.8 mm, even more preferably 1.8 mm to 2.6 mm, even more preferably 1.8 mm to 2.2 mm, and even more preferably 1.8 mm to 2.1 mm.

[0072] The thickness of the first glass plate 11 is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the first glass plate 11 is 0.3 mm or more, the handling is good, and when the thickness is 2.3 mm or less, the weight does not become too large.

[0073] In addition, if the thickness of the first glass plate 11 is not appropriate, if the first glass plate 11 and the second glass plate 12 are formed into two pieces of glass with particularly deep bends, there will be a mismatch between the shapes of the two pieces, which will have a significant impact on the glass quality such as residual stress after pressing.

[0074] However, by setting the thickness of the first glass plate 11 to 0.3 mm or more and 2.3 mm or less, glass quality such as residual stress can be maintained. A thickness of the first glass plate 11 of 0.3 mm or more and 2.3 mm or less is particularly effective in maintaining the glass quality of deeply curved glass. The thickness of the first glass plate 11 is more preferably 0.5 mm or more and 2.2 mm or less, and even more preferably 0.7 mm or more and 2.1 mm or less. Within this range, the aforementioned effects are more pronounced. The thickness of the first glass plate 11 is more preferably 1.0 mm or more, more preferably 1.3 mm or more, and even more preferably 1.5 mm or more. Furthermore, the thickness of the first glass plate 11 is more preferably 2.0 mm or less, and even more preferably 1.9 mm or less.

[0075] The first glass sheet 11 and / or the second glass sheet 12 may not have a constant thickness, but may have thicknesses that vary at various locations as needed. For example, if the laminated glass 10 is a windshield, one or both of the first glass sheet 11 and the second glass sheet 12 may have a wedge-shaped cross-section that increases in thickness from the bottom to the top of the windshield when the windshield is installed in a vehicle. In this case, if the thickness of the interlayer film 13 is constant, the combined wedge angle of the first glass sheet 11 and the second glass sheet 12 may vary within a range of, for example, greater than 0 mrad and less than 1.0 mrad.

[0076] The outer sides of the first glass plate 11 and / or the second glass plate 12 may be provided with a film that is waterproof, cuts off ultraviolet rays or infrared rays, or has low reflectivity or low emissivity. Furthermore, the side of the first glass plate 11 and / or the second glass plate 12 that contacts the intermediate film 13 may be provided with a film that cuts off ultraviolet rays or infrared rays, has low emissivity, absorbs visible light, or has a coloring effect.

[0077] When the first and second glass sheets 11, 12 are inorganic glass sheets with curved shapes, they are bent after being formed by a float process or the like and before being bonded together via the interlayer film 13. Bending is performed by heating the glass to soften it. The heating temperature of the glass during bending can be controlled within a range of approximately 550°C to 700°C.

[0078] [Interlayer] The interlayer film 13 is generally made of a thermoplastic resin. Examples of the thermoplastic resins conventionally used for such applications include plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, plasticized polyurethane resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, and ionomer resins. Furthermore, a resin composition containing a hydrogenated modified block copolymer as described in Japanese Patent No. 6065221 can also be preferably used.

[0079] Among these, plasticized polyvinyl acetal resins are preferred due to their excellent balance of properties, including transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These thermoplastic resins can be used alone or in combination of two or more. The term "plasticized" in the plasticized polyvinyl acetal resins mentioned above means that they can be plasticized by adding a plasticizer. This applies similarly to other plasticized resins.

[0080] However, when enclosing a specific object in the interlayer film 13, certain plasticizers may cause degradation of the enclosed object, depending on the type of the enclosed object. In such cases, it is preferable to use a resin that is substantially free of the plasticizer. Examples of plasticizer-free resins include ethylene-vinyl acetate copolymer (EVA) resins.

[0081] Examples of the polyvinyl acetal resin include polyvinyl formal resins obtained by reacting polyvinyl alcohol (PVA) with formaldehyde, polyvinyl acetal resins in a narrow sense obtained by reacting PVA with acetaldehyde, and polyvinyl butyral resins (PVB) obtained by reacting PVA with n-butyraldehyde. PVB is particularly suitable from the perspective of excellent balance among various properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These polyvinyl acetal resins may be used alone or in combination of two or more.

[0082] However, the material forming the interlayer film 13 is not limited to thermoplastic resins. Furthermore, the interlayer film 13 may contain functional particles such as infrared absorbers, ultraviolet absorbers, and luminescent agents. Furthermore, the interlayer film 13 may have a colored portion known as a light-blocking band. The coloring pigment used to form the colored portion can be any coloring pigment that is compatible with plastic and whose added amount is adjusted to achieve a visible light transmittance of 40% or less. Examples include organic coloring pigments such as azo, phthalocyanine, quinacridone, perylene, pyrenone, dioxazine, anthraquinone, and isoindolinone; and inorganic coloring pigments such as oxides, hydroxides, sulfides, chromic acid, sulfates, carbonates, silicates, phosphates, arsenates, ferrocyanide, carbon, and metal powders. These coloring pigments may be used alone or in combination of two or more. Furthermore, the portion of the interlayer film 13 that overlaps with the scattering portion 16 when viewed from above may be colored to enhance the appearance of the marking.

[0083] The interlayer 13 may have multiple layers. For example, the interlayer 13 may have three or more layers. For example, by forming the interlayer from three or more layers and adjusting the shear modulus of some layers other than the two side layers to be lower than the shear modulus of the two side layers by adjusting the plasticizer, the sound insulation of the laminated glass 10 can be improved. In this case, the shear moduli of the two side layers may be the same or different.

[0084] The thickness of the interlayer film 13 at its thinnest portion is preferably 0.5 mm or greater. If the interlayer film 13 comprises multiple layers, the thickness of the interlayer film 13 refers to the total thickness of each layer. If the thickness of the interlayer film 13 at its thinnest portion is 0.5 mm or greater, the impact resistance required for laminated glass is sufficient. Furthermore, the thickness of the interlayer film 13 at its thickest portion is preferably 2 mm or less. If the maximum thickness of the interlayer film 13 is 2 mm or less, the weight of the laminated glass will not be excessively increased. The maximum thickness of the interlayer film 13 is more preferably 1.5 mm or less, and even more preferably 1.2 mm or less.

[0085] When the interlayer film 13 comprises multiple layers, the layers are preferably formed of the same material, but may be formed of different materials. However, from the perspective of adhesion to the first glass sheet 11 and the second glass sheet 12, or the functional materials incorporated into the laminated glass 10, it is preferable that the portion of the interlayer film 13 that accounts for 50% or more of the film thickness be made of the above-mentioned materials.

[0086] The interlayer film 13 does not have a constant thickness; its thickness can vary in various locations as needed. For example, if the laminated glass 10 is a windshield, the interlayer film 13 can have a wedge-shaped cross-section, with the thickness increasing from the lower edge of the front windshield toward the upper edge when the windshield is installed on a vehicle. In this case, if the thickness of the first and second glass sheets 11, 12 is constant, the wedge angle of the interlayer film 13 can be, for example, within a range greater than 0 mrad and less than 1.0 mrad, and can be between 0.1 mrad and less than 0.7 mrad, or between 0.2 mrad and less than 0.5 mrad. Furthermore, the portion of the interlayer film 13 that overlaps with the scattering portion 16 when viewed from above can also have a wedge-shaped cross-section.

[0087] The interlayer film 13 is manufactured, for example, by appropriately selecting the aforementioned resin material to form the interlayer film and extruding it in a heated, molten state using an extruder. Extrusion conditions, such as the extrusion speed, are set to ensure uniformity. The extruded resin film is then adjusted to match the design of the laminated glass, for example, by stretching it as needed to impart curvature to the upper and lower edges of the resin film, thereby completing the interlayer film 13.

[0088] [Laminated glass] The total thickness of the laminated glass 10 is preferably 2.8 mm or greater and 10 mm or less. A total thickness of 2.8 mm or greater ensures sufficient rigidity. A total thickness of 10 mm or less provides sufficient transmittance while reducing haze. The total thickness of the laminated glass 10 is preferably 7 mm or less, more preferably 6 mm or less, and even more preferably 5 mm or less.

[0089] On at least one side of the laminated glass 10, the offset between the first glass sheet 11 and the second glass sheet 12 is preferably 1.5 mm or less, more preferably 1 mm or less. Here, the offset between the first glass sheet 11 and the second glass sheet 12 refers to the amount of offset between the outer peripheral side surface of the first glass sheet 11 and the outer peripheral side surface of the second glass sheet 12 when viewed from above.

[0090] In order to avoid deteriorating the appearance, it is preferred that the misalignment between the first glass sheet 11 and the second glass sheet 12 on at least one side of the laminated glass 10 is 1.5 mm or less. In order to avoid deteriorating the appearance, it is more preferred that the misalignment between the first glass sheet 11 and the second glass sheet 12 on at least one side of the laminated glass 10 is 1.0 mm or less.

[0091] [Method for manufacturing laminated glass] To manufacture laminated glass 10, first, a first glass sheet 11 having a third surface 113 and a fourth surface 114, an interlayer film 13, and a second glass sheet 12 having a first surface 121 and a second surface 122 are prepared. The thickness of the first and second glass sheets 11, 12 is constant. Furthermore, the thickness of the interlayer film 13 is also constant. Alternatively, the first and second glass sheets 11, 12, or the interlayer film 13 may have a wedge-shaped cross section.

[0092] Next, the optical reflective layer 14 is provided on the fourth surface 114 of the first glass plate 11. For example, the optical reflective layer 14 is formed on the fourth surface 114 of the first glass plate 11 by sputtering or CVD. Alternatively, the first glass plate 11 on which the optical reflective layer 14 is formed can be prepared by forming the optical reflective layer 14 on a large-sized glass and then cutting the glass.

[0093] Then, the scattering portion 16 is formed. The scattering portion 16 can be formed, for example, by spraying particles from the optical reflective layer 14 side to etch the optical reflective layer 14 and the fourth surface 114 of the first glass plate 11.

[0094] Then, the shielding layer 15 is formed on the second surface 122 of the second glass plate 12. If the shielding layer 15 is a colored ceramic layer, for example, it can be formed by applying a ceramic color paste on the second surface 122 of the second glass plate 12 by screen printing or the like and then firing the paste.

[0095] After forming the optically reflective layer 14 and the shielding layer 15, the first and second glass sheets 11, 12 are bent. The bending of the first and second glass sheets 11, 12 can be performed using, for example, a press forming method. Specifically, a forming mold with a concave and convex shape that matches the final shape of the laminated glass 10 is prepared. The first and second glass sheets 11, 12 are heated to a predetermined temperature to soften them, and then press-formed using the forming mold to bend the first and second glass sheets 11, 12. Alternatively, the bending of the first and second glass sheets 11, 12 can be performed using gravity forming or roll forming. Furthermore, if the optically reflective layer 14 is a film, the first and second glass sheets 11, 12 can be laminated simultaneously during the process of forming a laminated body by sandwiching the interlayer film 13 after the bending, or can be affixed to the glass surfaces after the laminated glass 10 is formed.

[0096] In the laminated glass 10, the difference in thickness between the first glass sheet 11 and the second glass sheet 12 is preferably 0.3 mm or less, more preferably 0.2 mm or less. It is particularly preferred that the first glass sheet 11 and the second glass sheet 12 have the same thickness. The smaller the difference in thickness between the first glass sheet 11 and the second glass sheet 12, the closer their behavior during bending, thereby reducing perspective distortion.

[0097] Next, the interlayer film 13 is stretched as needed. The interlayer film 13 is then placed between the third surface 113 of the first glass plate 11 and the second surface 122 of the second glass plate 12, and pressure-bonded. For example, the interlayer film 13 is sandwiched between the first and second glass plates 11, 12, with the optically reflective layer 14 facing outward, to form a laminate. This laminate is then placed in a rubber bag, a rubber chamber, a resin bag, or the like, and bonded under vacuum conditions controlled within a gauge pressure range of -100 kPa to -65 kPa at a temperature of approximately 70°C to 110°C. The heating conditions, temperature conditions, and lamination method are appropriately selected.

[0098] Furthermore, for example, by controlling the temperature to be between 100°C and 150°C and the absolute pressure to be between 0.6 MPa and 1.5 MPa, a laminated glass 10 with even greater durability can be obtained. However, in some cases, this heating and pressing step may not be used in consideration of process simplification and the properties of the materials enclosed in the laminated glass 10. Laminated glass 10 is produced through the above steps.

[0099] Alternatively, the so-called “cold bending method” may be used, wherein the second glass sheet 12 is pre-bent, and the flat first glass sheet 11 sandwiching the interlayer film 13 is bent along the shape of the second glass sheet 12 and bonded to produce the laminated glass 10 .

[0100] Between the first and second glass sheets 11, 12, in addition to the interlayer film 13, films or devices with functions such as electric heating lines, infrared reflection, luminescence, power generation, dimming, touch screens, visible light reflection, scattering, decoration, and absorption may be further provided, without impairing the effects of the present invention. Furthermore, the surface of the laminated glass 10 may be provided with films with functions such as anti-fog, water repellency, heat insulation, and low reflection. Furthermore, films with functions such as heat insulation and heating may be provided on the inner principal surface of the first or second glass sheet 11, 12.

[0101] Modification Figure 4 This is a cross-sectional view illustrating a laminated glass according to Modification 1 of the first embodiment. Figure 4 The laminated glass 10A shown is different from the laminated glass 10 in that the scattering portion 16 is located on the first surface 121 of the second glass sheet 12 .

[0102] The scattering portion 16 overlaps the optical reflective layer 14 in a plan view. Furthermore, the scattering portion 16 is located within the opening 15x provided in the shielding layer 15 in a plan view. Light emitted from the light source 50 and transmitted through the optical reflective layer 14 passes through the opening 15x and strikes the scattering portion 16. The scattering portion 16 can be formed, for example, by sandblasting, spraying particles onto the first surface 121 of the second glass plate 12. In this case, since the optical reflective layer 14 does not need to be etched, the scattering portion 16 can be formed without damaging the optical reflective layer 14.

[0103] Even when the scattering portion 16 is located on the first surface 121 of the second glass plate 12 , the same effects as those of the first embodiment are achieved.

[0104] Figure 5 This is a cross-sectional view illustrating a laminated glass according to Modification 2 of the first embodiment. Figure 5 The laminated glass 10B shown differs from the laminated glass 10 in that the scattering portions are located on the first surface 121 of the second glass sheet 12 and the fourth surface 114 of the first glass sheet 11. Specifically, the scattering portion 161 is located on the first surface 121 of the second glass sheet 12, while the scattering portion 162 is located on the fourth surface 114 of the first glass sheet 11.

[0105] Scattering portions 161 and 162 overlap with shielding layer 15 when viewed from above. This improves contrast, making scattering portions 161 and 162 easier to see. Light emitted by light source 50 illuminates scattering portion 162, but is blocked from scattering portion 161 by shielding layer 15. Scattering portion 161 is visible from outside the vehicle, while scattering portion 162 is visible from inside the vehicle. Scattering portions 161 and 162 may have the same or different markings.

[0106] Figure 6 This is a cross-sectional view illustrating a laminated glass according to Modification 3 of the first embodiment. Figure 6 The laminated glass 10C shown is different from the laminated glass 10 in that the scattering portion 16 is located on the second surface 122 of the second glass sheet 12 .

[0107] The scattering portion 16 overlaps the optical reflective layer 14 in a plan view. Furthermore, the scattering portion 16 is located within the opening 15x provided in the shielding layer 15 in a plan view. Light emitted from the light source 50 and transmitted through the optical reflective layer 14 is irradiated onto the scattering portion 16. The scattering portion 16 is sealed, for example, with a resin film 17 and affixed to the second surface 122 of the second glass plate 12. The scattering portion 16 may also be affixed to the third surface 113 of the first glass plate 11.

[0108] The scattering portion 16 can be formed by sandblasting, but the unevenness created by sandblasting may be buried by the resin forming the intermediate film 13, potentially reducing visibility. By sealing the scattering portion 16 with the resin film 17, the unevenness forming the scattering portion 16 is prevented from being buried by the resin forming the intermediate film 13, thereby achieving good visibility. Furthermore, since the optical reflective layer 14 does not need to be etched, the scattering portion 16 can be formed without damaging the optical reflective layer 14. Alternatively, the scattering portion 16 can be applied to a resin film or to glass and bonded to the second surface 122 of the second glass plate 12 or the third surface 113 of the first glass plate 11.

[0109] A specific example of the structure of the scattering portion 16 sealed with the resin film 17 is the following laminate: a laminate comprising a first transparent film, a first transparent layer provided on the first transparent film and having a concavo-convex structure on its surface, a reflective film provided along the concavo-convex structure-side surface of the first transparent layer, a second transparent layer provided so as to cover the reflective film surface, and a second transparent film provided on the surface of the second transparent layer. In this laminate, the concavo-convex structure functions as the scattering portion 16, while the remaining portion functions as the resin film 17. In this structure, the ranges of the surface roughness Ra and haze value are as described above.

[0110] In this manner, even when the scattering portion 16 is located on the second surface 122 of the second glass plate 12 or the third surface 113 of the first glass plate 11 , the same effects as those of the first embodiment can be achieved.

[0111] Although preferred embodiments and the like have been described in detail above, the present invention is not limited to the above-described embodiments and the like, and various modifications and substitutions may be made to the above-described embodiments and the like without departing from the scope of the claims.

[0112] For example, the above embodiments and variations describe an example in which the optical reflective layer 14 is provided on the fourth surface 114 of the first glass plate 11. However, the optical reflective layer 14 can be provided at any location that reflects light emitted by the HUD system's light source. For example, the optical reflective layer 14 can also be provided on a surface such as the third surface 113 of the first glass plate 11. Furthermore, providing the optical reflective layer 14 on the fourth surface 114 of the first glass plate 11 is advantageous in reducing ghosting.

[0113] In addition to the above embodiment, the following supplementary notes are disclosed. [Note 1] A laminated glass comprising a first glass sheet, a second glass sheet, and an interlayer film positioned between the first glass sheet and the second glass sheet for bonding the first glass sheet and the second glass sheet together, wherein the laminated glass comprises: an optical reflective layer that reflects light incident from the first glass plate side, a shielding layer disposed closer to the second glass plate than the optical reflective layer in a cross-sectional view and at least partially overlapping the optical reflective layer in a plan view; and The scattering portion is located at a position overlapping with the area where the optical reflective layer is arranged in a plan view. [Note 2] The laminated glass according to Supplementary Note 1, wherein the surface roughness Ra of the scattering portion is 1 μm or more and 100 μm or less. [Note 3] The laminated glass according to Supplementary Note 1 or 2, wherein the haze value of the scattering portion is 40% or higher. [Note 4] The laminated glass according to any one of Supplementary Notes 1 to 3, wherein the surface of the first glass sheet located on the side opposite to the interlayer film is defined as the fourth surface, the surface of the first glass sheet located on the side of the interlayer film is defined as the third surface, the surface of the second glass sheet located on the side of the interlayer film is defined as the second surface, and the surface of the second glass sheet located on the side opposite to the interlayer film is defined as the first surface, The scattering portion is located on the first surface or the fourth surface, The scattering portion is located in the opening portion provided in the shielding layer in a plan view. [Note 5] The laminated glass according to any one of Supplementary Notes 1 to 3, wherein the surface of the first glass sheet located on the side opposite to the interlayer film is defined as the fourth surface, the surface of the first glass sheet located on the side of the interlayer film is defined as the third surface, the surface of the second glass sheet located on the side of the interlayer film is defined as the second surface, and the surface of the second glass sheet located on the side opposite to the interlayer film is defined as the first surface, The scattering portion is located on the second surface or the third surface, The scattering portion is located in the opening portion provided in the shielding layer in a plan view. [Note 6] The laminated glass according to any one of Supplementary Notes 1 to 3, wherein the surface of the first glass sheet located on the side opposite to the interlayer film is defined as the fourth surface, the surface of the first glass sheet located on the side of the interlayer film is defined as the third surface, the surface of the second glass sheet located on the side of the interlayer film is defined as the second surface, and the surface of the second glass sheet located on the side opposite to the interlayer film is defined as the first surface, The scattering portion is located on the first surface and the fourth surface, Each of the scattering portions overlaps with the shielding layer in a plan view. [Note 7] The laminated glass according to any one of Supplementary Notes 1 to 3, wherein the scattering portion is sealed with a resin film, or is applied on a resin film or on glass and bonded to the second surface or the third surface. [Note 8] The laminated glass according to Supplementary Note 4, 5 or 7, wherein a distance between the scattering portion and the opening is greater than or equal to 5 mm in a plan view. [Note 9] The laminated glass according to any one of Supplementary Notes 1 to 8, wherein the scattering portion includes characters, graphics, and / or symbols, and is a mark recognizable by human vision. [Note 10] The laminated glass according to any one of Supplementary Notes 1 to 9, wherein the optical reflective layer has a visible light reflectivity of 10% or more when a P-polarized visible light ray is incident at an incident angle of 57 degrees. [Note 11] The laminated glass according to any one of Supplementary Notes 1 to 10, wherein the optical reflective layer has a visible light reflectivity of 18% or more when an incident angle of 57 degrees is applied to S-polarized visible light. [Note 12] The laminated glass according to any one of Supplementary Notes 1 to 11, wherein the optical reflective layer is disposed on a surface of the first glass plate opposite to the intermediate film. Explanation of symbols

[0114] 1HUD system 10,10A,10B,10C laminated glass 11 First Glass Plate 113 third page 114 Page 4 12 Second glass plate 121 Page 1 122 Second Side 13 Intermediate film 14 Optical reflective layer 15 shielding layers 15x opening 16,161,162 Scattering 17 resin film 19 Information sending and receiving area 50 light sources 60 First Optical System 70 image display components 80 Second optical system 90 concave mirror.

Claims

1. A laminated glass comprising a first glass plate, a second glass plate, and an interlayer film positioned between the first glass plate and the second glass plate to bond the first glass plate and the second glass plate together, wherein: The laminated glass has: an optical reflective layer that reflects light incident from the first glass plate side, a shielding layer disposed closer to the second glass plate than the optical reflective layer in a cross-sectional view and at least partially overlapping the optical reflective layer in a plan view; and The scattering portion is located at a position overlapping with the area where the optical reflective layer is arranged in a plan view.

2. The laminated glass according to claim 1, wherein: The surface roughness Ra of the scattering portion is greater than or equal to 1 μm and less than or equal to 100 μm.

3. The laminated glass according to claim 1, wherein: The haze value of the scattering part is greater than 40%.

4. The laminated glass according to claim 1, wherein: When the surface of the first glass plate on the side opposite to the intermediate film is defined as the fourth surface, the surface of the first glass plate on the intermediate film side is defined as the third surface, the surface of the second glass plate on the intermediate film side is defined as the second surface, and the surface of the second glass plate on the side opposite to the intermediate film is defined as the first surface, The scattering portion is located on the first surface or the fourth surface, The scattering portion is located in the opening portion provided in the shielding layer in a plan view.

5. The laminated glass according to claim 1, wherein: When the surface of the first glass plate on the side opposite to the intermediate film is defined as the fourth surface, the surface of the first glass plate on the intermediate film side is defined as the third surface, the surface of the second glass plate on the intermediate film side is defined as the second surface, and the surface of the second glass plate on the side opposite to the intermediate film is defined as the first surface, The scattering portion is located on the second surface or the third surface, The scattering portion is located in the opening portion provided in the shielding layer in a plan view.

6. The laminated glass according to claim 1, wherein: When the surface of the first glass plate on the side opposite to the intermediate film is defined as the fourth surface, the surface of the first glass plate on the intermediate film side is defined as the third surface, the surface of the second glass plate on the intermediate film side is defined as the second surface, and the surface of the second glass plate on the side opposite to the intermediate film is defined as the first surface, The scattering portion is located on the first surface and the fourth surface, Each of the scattering portions overlaps with the shielding layer in a plan view.

7. The laminated glass according to claim 5, wherein: The scattering portion is sealed with a resin film, or is coated on a resin film or on glass and then attached to the second surface or the third surface.

8. The laminated glass according to claim 4, 5 or 7, wherein: The distance between the scattering portion and the opening portion is greater than 5 mm in a top view.

9. The laminated glass according to any one of claims 1 to 7, wherein The scattering portion includes text, graphics and / or symbols, and is a mark that can be recognized by human vision.

10. The laminated glass according to any one of claims 1 to 7, wherein The optical reflective layer has a visible light reflectivity of more than 10% when the incident angle is 57 degrees and P-polarized visible light is incident.

11. The laminated glass according to any one of claims 1 to 7, wherein The optical reflective layer has a visible light reflectivity of greater than 18% when an incident angle of 57 degrees and S-polarized visible light is incident.

12. The laminated glass according to any one of claims 1 to 7, wherein The optical reflective layer is disposed on a surface of the first glass plate that is located on the side opposite to the intermediate film.

Images