Laminated glass and projection system

Abstract

Provided in the present application are laminated glass and a projection system. The laminated glass has a light-transmitting region and a shielding region, wherein at least one display region is provided in the shielding region. The display region has a P-light reflectivity RLp for P-polarized light which is incident at an incident angle of 65° and has a wavelength of 380 nm-780 nm, wherein the P-light reflectivity RLp satisfies RLp≥30%; and the display region has a maximum difference U for a reflected color sRGB value of the P-polarized light which is incident at the incident angle of 65° and has the wavelength of 380 nm-780 nm, wherein the maximum difference U satisfies U≤15. By means of the laminated glass and projection system that are provided in the present application, the brightness of projection display is enhanced and the energy utilization rate of a projection apparatus is improved, such that the energy consumption of the projection apparatus is reduced, and full-color and neutral display can also be achieved, thus avoiding color distortion of a displayed image, such that the displayed image is more natural and beautiful, thereby improving the visual comfort of human eyes observing the displayed image.

Description

Laminated glass and projection system

[0001] The present disclosure claims priority to the Chinese patent application No. 202410799622.9, filed on June 20, 2024, to the Chinese Patent Office, with the title of "Laminated glass and projection system", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of glass, in particular to laminated glass and projection system. BACKGROUND

[0003] Vehicles can provide various information to drivers and passengers, such as vehicle information, road information, social media information, and even entertainment information, etc. Generally, vehicle heads-up displays (HUD), instrument panels, center screens, co-pilot display screens, and combinations thereof can be used to achieve multi-form, long and short, multi-level display requirements, thereby providing drivers and passengers with a more comfortable, safe, intelligent experience and rich information.

[0004] For the display of instrument panels, center screens, etc., the driver needs to look down to observe, and the line of sight of the human eye will temporarily leave the road surface, thereby causing a driving safety hazard. For traditional heads-up displays (HUD), the HUD image is displayed in the light transmission area of the front windshield, and the environment outside the vehicle serves as the display background of the HUD image. The brightness of the environment outside the vehicle and other interfering light will affect the driver's observation of the HUD image, thereby reducing driving safety and visual comfort. SUMMARY

[0005] In view of this, the present application provides a laminated glass, which has a light transmission area and a shielding area.

[0006] The visible light transmittance of the light transmission area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%.

[0007] At least one display area is provided in the shielding area. The display area has a P light reflectance RLp for P polarized light with a wavelength of 380-780 nm incident at an incident angle of 65°, and the P light reflectance RLp is greater than or equal to 30%. The display area has a maximum difference U in reflection color sRGB value for P polarized light with a wavelength of 380-780 nm incident at an incident angle of 65°, and the maximum difference U is less than or equal to 15.

[0008] Wherein, the maximum difference U is less than or equal to 10, or the maximum difference U is less than or equal to 8, or the maximum difference U is less than or equal to 5, or the maximum difference U is less than or equal to 3.

[0009] wherein the P light reflectance RLp is 40% to 70%, or the P light reflectance RLp is 40% to 60%, or the P light reflectance RLp is 40% to 50%, or the P light reflectance RLp is 50% to 60%, or the P light reflectance RLp is 42% to 48%.

[0010] wherein the display area has an S light reflectance RLs for S polarized light having a wavelength of 380 nm to 780 nm incident at an incident angle of 65°, and the S light reflectance RLs is ≤ 20%, or the S light reflectance RLs is ≤ 15%, or the S light reflectance RLs is ≤ 10%.

[0011] wherein the ratio of the P light reflectance RLp to the S light reflectance RLs, RLp / RLs, is 2.5 to 4, or RLp / RLs is 2.5 to 3.5, or RLp / RLs is 2.5 to 3.

[0012] wherein the reflective color sRGB value has red R, green G, and blue B, R = 170 to 200, G = 170 to 200, and B = 170 to 200.

[0013] wherein R ≤ G and / or R ≤ B.

[0014] wherein the display area has a reflective color for light emitted by a D65 light source incident at an incident angle of 65° having Lab values, -5 ≤ a ≤ 2 and -5 ≤ b ≤ 2, or -3 ≤ a ≤ 1 and -3 ≤ b ≤ 1, or -1 ≤ a ≤ 0 and -1 ≤ b ≤ 0.

[0015] wherein the ratio of the total area of the obscuration area to the area of the laminated glass is 5% to 50%, or 10% to 45%, or 15% to 40%, or 20% to 35%.

[0016] wherein the obscuration area includes a bottom obscuration area located below the light-transmissive area, and the display area is located within the bottom obscuration area.

[0017] wherein the ratio of the total area of the display area to the area of the bottom obscuration area is 10% to 110%, or 15% to 105%, or 20% to 100%, or 30% to 95%, or 40% to 90%.

[0018] wherein the laminated glass includes a first glass sheet having a first side and a second side, a second glass sheet having a third side and a fourth side, a bonding layer connecting the second side and the third side, an obscuration layer disposed within the obscuration area, and a reflective element disposed within the obscuration area and covering at least the display area, and the obscuration layer is located between the first glass sheet and the reflective element.

[0019] The material of the shielding layer is selected from at least one of dark ink, opaque polymer film and light control film.

[0020] The reflective element is selected from at least one of high-low refractive index stack, metal stack, holographic film and stacked polymer film.

[0021] The shielding area includes a bottom shielding area under the light-transmitting area, the display area is located in the bottom shielding area, the height of the reflective element is greater than or equal to the height of the shielding layer in the bottom shielding area, and the difference between the height of the reflective element and the height of the shielding layer in the bottom shielding area is h, 0≤h≤10mm, or 0≤h≤8mm, or 0≤h≤5mm.

[0022] The shielding area includes a bottom shielding area under the light-transmitting area, the display area is located in the bottom shielding area, the shielding layer in the bottom shielding area is composed of a first shielding sub-layer and a second shielding sub-layer, the material of the first shielding sub-layer is dark ink, and the material of the second shielding sub-layer is opaque polymer film or light control film.

[0023] The laminated glass further comprises a heat insulation layer selected from at least one of single silver nano coating, double silver nano coating, three silver nano coating, four silver nano coating, ITO nano coating, FTO nano coating and infrared blocking micron coating, and the total solar energy transmittance of the laminated glass with the heat insulation layer is less than or equal to 55%.

[0024] The laminated glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected with the electric heating element, the electric heating element is single silver electric heating coating, double silver electric heating coating, three silver electric heating coating, four silver electric heating coating, five silver electric heating coating, TCO electric heating coating, metal wire, printed silver paste wire, nano silver wire, carbon fiber wire, metal mesh or graphene heating sheet, and the electric heating element can make the laminated glass have a heating power density of at least 400W / m2.

[0025] The reflective element is a high-low refractive index stack arranged on the fourth surface, the high-low refractive index stack includes at least one stack structure, each stack structure includes a high refractive index layer and a low refractive index layer which are sequentially stacked, the refractive index of the high refractive index layer is greater than or equal to 1.8, and the refractive index of the low refractive index layer is less than 1.8.

[0026] The high-low refractive index stack is directly arranged on the fourth surface.

[0027] Or, a shielding layer is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the shielding layer away from the fourth surface.

[0028] Or, an ultra-thin substrate is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the ultra-thin substrate away from the fourth surface, the thickness of the ultra-thin substrate is 0.05mm to 1.0mm, and the material of the ultra-thin substrate is soda-lime glass, high-alumina glass, lithium-alumina glass, borosilicate glass, polyethylene terephthalate or polycarbonate.

[0029] Among them, the layer farthest from the fourth surface in the high-low refractive index stack is a low refractive index layer; the physical thickness of the low refractive index layer is 80nm-240nm, or 90nm-200nm, or 100nm-180nm.

[0030] Among them, the high-low refractive index stack further comprises at least one reflection enhancement layer, the material of the reflection enhancement layer is selected from at least one of the single substance or alloy of Si, Ni, Cr, Al, Ti, Nb, Mo, Sn, Zn, Zr, Mg, and the total physical thickness of the reflection enhancement layer is greater than 10nm.

[0031] Among them, the reflection enhancement layer closest to the fourth surface is a first reflection enhancement layer, and the physical thickness of the first reflection enhancement layer is greater than or equal to 5nm.

[0032] Among them, the reflection enhancement layer farthest from the fourth surface is a second reflection enhancement layer, and the physical thickness of the second reflection enhancement layer is greater than or equal to 15nm.

[0033] Among them, the reflection enhancement layer further contains at least one of the oxides, nitrides, oxynitrides of the single substance or the alloy in a sub-stoichiometric amount.

[0034] Among them, the laminated glass further comprises a decorative layer arranged on the fourth surface, the decorative layer is arranged in the shielding area, the reflective element is arranged on the fourth surface, and the decorative layer is arranged around the reflective element.

[0035] The second aspect of the present application provides a projection system, the projection system comprising a projection device and a laminated glass as provided in the first aspect of the present application, the projection device is used to generate projection light, the projection light contains at least 80% of P-polarized light, the projection light is incident into at least one display area in the shielding area at an incident angle of 38°-85°, and the display area reflects the projection light to form a display image.

[0036] The laminated glass and projection system provided by the application can form a display area in the bottom shielding area of the laminated glass, cooperate with the projection light containing at least 80% of P-polarized light, meet the use requirement of the driver wearing sunglasses, eliminate the visual ghosting phenomenon of the display image, make the shielding layer as the display background of the image display, better shield the external ambient light, avoid unnecessary interference of the visual line, improve the contrast of the display image and the display background, realize a higher color gamut, make the image display clearer, enhance the reflection of the P-polarized light, limit the maximum difference U≤15 of the reflected color sRGB value, enhance the brightness of the projection display, improve the energy utilization rate of the projection device, reduce the energy consumption of the projection device, realize full-color and neutral display, avoid color distortion of the display image, make the display image more natural and beautiful, and improve the visual comfort of the human eye observing the display image. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings required to be used in the embodiments of the application will be described below.

[0038] Fig. 1 is a top view of the laminated glass in one embodiment provided by the application.

[0039] Fig. 2 is a top view of the laminated glass in another embodiment provided by the application.

[0040] Fig. 3 is a top view of the laminated glass in another embodiment provided by the application.

[0041] Fig. 4 is a sectional view of the laminated glass provided by the application.

[0042] Fig. 5 is a partial sectional view of the shielding layer located on the second surface provided by the application.

[0043] Fig. 6 is a partial sectional view of the shielding layer located on the third surface provided by the application.

[0044] Fig. 7 is a partial sectional view of the shielding layer located in the bonding layer provided by the application.

[0045] Fig. 8 is a partial sectional view of the shielding layer located on the fourth surface provided by the application.

[0046] Fig. 9 is a partial sectional view of the shielding layer composed of the first shielding sub-layer and the second shielding sub-layer provided by the application.

[0047] Fig. 10 is a sectional view of the laminated glass with a heat insulation layer provided by the application.

[0048] Fig. 11 is a sectional view of the laminated glass with an electric heating element provided by the application.

[0049] Fig. 12 is a schematic cross-sectional view of one example of the high-low refractive index stack provided herein.

[0050] Fig. 13 is a schematic cross-sectional view of another example of the high-low refractive index stack provided herein.

[0051] Legend: laminated glass 10, light-transmitting region 101, shielding region 102, bottom shielding region 1021, left shielding region 1022, top shielding region 1023, right shielding region 1024, display region 103, first glass sheet 11, first surface 111, second surface 112, bonding layer 12, second glass sheet 13, third surface 131, fourth surface 132, shielding layer 14, first shielding sub-layer 141, second shielding sub-layer 142, reflective element 15, first reflection-enhancing layer 150, second reflection-enhancing layer 151, first high-refractive index layer 152, first low-refractive index layer 153, second high-refractive index layer 154, second low-refractive index layer 155, transition layer 156, heat-insulating layer 16, electric heating element 17, busbar 18, decorative layer 19, projection device 20, projection light 201. DETAILED DESCRIPTION

[0052] The following is a preferred embodiment of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

[0053] Unless otherwise stated or contradictory, the terms or phrases used in the present application have the following meanings:

[0054] In the present application, "first", "second", and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0055] In the present application, "one or more" refers to any one, any two or any two or more of the listed items. Among them, "several" refers to any two or more.

[0056] The value of x in the chemical formula: if it is defined, it shall be subject to the defined range. If it is not defined, it can be determined according to the stoichiometric deposition, sub-stoichiometric deposition or super-stoichiometric deposition in the magnetron sputtering process.

[0057] Refractive index: the refractive index measured at a wavelength of 550 nm.

[0058] As shown in FIG. 1, FIG. 2 and FIG. 3, the present application provides a laminated glass 10, which has a light-transmitting area 101 and a shielding area 102. The shielding area 102 is arranged around the periphery of the light-transmitting area 101, and the visible light transmittance of the light-transmitting area 101 is greater than or equal to 70% to facilitate the observation of the environment outside the vehicle by the people inside the vehicle. The visible light transmittance of the shielding area 102 is less than or equal to 5% to facilitate the shielding, protection and overall aesthetics, etc. Preferably, the visible light transmittance of the shielding area 102 is less than or equal to 3%, more preferably less than or equal to 1%, further less than or equal to 0.5%, and even almost equal to 0, i.e. non-transmittance.

[0059] The shielding area 102 described in the present application is provided with at least one display area 103, which can display vehicle driving information, various patterns or play videos, etc., and can be used for various scenes such as welcoming, creating atmosphere, watching movies and office work, etc. Optionally, it can be used to display driving parameters, including vehicle speed, engine revolutions, fuel consumption, tire pressure, warning information, driving mileage, etc., and can also be used to display weather temperature, entertainment information, and can be used as dynamic navigation, night vision, real scene map, etc. The display area 103 is located in the shielding area 102, and the number of display areas 103 can be one as shown in FIG. 1, or four as shown in FIG. 2, and other numbers such as two, three or even more can be designed according to actual products.

[0060] In FIG. 1, FIG. 2 and FIG. 3, the shielding area 102 includes a bottom shielding area 1021 located below the light-transmitting area 101, a left shielding area 1022 located on the left side of the light-transmitting area 101, a top shielding area 1023 located above the light-transmitting area 101, and a right shielding area 1024 located on the right side of the light-transmitting area 101. Preferably, the display area 103 is located in the bottom shielding area 1021.

[0061] In order to improve the shielding effect of the shielding area 102 and facilitate the observation of the display area 103 by the people inside the vehicle, the ratio of the total area of the shielding area 102 to the area of the laminated glass 10 is preferably 5% to 50%. Specifically, it can be exemplified as 5%, 8%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc. More preferably, the ratio of the total area of the shielding area 102 to the area of the laminated glass 10 is 10% to 45%, or 15% to 40%, or 20% to 35%, so that the shielding effect of the shielding area 102 and the overall aesthetics of the laminated glass 10 can be better balanced.

[0062] In order to improve the display effect of the display area 103 and facilitate the observation of the display area 103 by the person in the vehicle, the ratio of the total area of the display area 103 to the area of the bottom shielding area 1021 is preferably 10% to 110%, or 15% to 105%, or 20% to 100%, or 30% to 95%, or 40% to 90%, so that the display effect of the display area 103 and the overall aesthetics of the laminated glass 10 can be well balanced. Specifically, it can be exemplified as 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100%, 105%, or 110%, etc. When the number of the display area 103 is greater than or equal to two, the total area of the display area 103 is equal to the sum of the areas of all the display areas 103.

[0063] In FIG. 3, the display area 103 covers the entire bottom shielding area 1021, and even the upper boundary of the display area 103 is closer to the top shielding area 1023 than the upper boundary of the bottom shielding area 1021, i.e., the ratio of the total area of the display area 103 to the area of the bottom shielding area 1021 is 100% to 110%, so as to form a through-type panoramic display effect from the A-pillar to the A-pillar.

[0064] The display area 103 described in the present application has a P light reflectivity RLp for P polarized light with a wavelength of 380 nm to 780 nm at an incident angle of 65°, and the P light reflectivity RLp is greater than or equal to 30%, preferably, the P light reflectivity RLp is 40% to 70%, which can be exemplified as 40%, 42%, 45%, 48%, 50%, 55%, 60%, 65%, 70%, etc., more preferably, the P light reflectivity RLp is 40% to 60%, more preferably, the P light reflectivity RLp is 40% to 50%, more preferably, the P light reflectivity RLp is 50% to 60%, further preferably, the P light reflectivity RLp is 42% to 48%, so as to enhance the brightness of the projection display, improve the energy utilization rate of the projection device 20, and further reduce the energy consumption of the projection device 20, which is conducive to the miniaturization and heat dissipation design of the projection device 20.

[0065] The display area 103 described in the present application has a maximum difference U in the reflected color sRGB value of P-polarized light with a wavelength of 380-780 nm at an incident angle of 65°, and the maximum difference U is ≤15, and specific examples include 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, etc., preferably the maximum difference U is ≤10, more preferably the maximum difference U is ≤8, further preferably the maximum difference U is ≤5, and even more preferably the maximum difference U is ≤3, so that the display brightness is enhanced, full-color and neutral display is achieved, color distortion of the displayed image is avoided, the displayed image is more natural and beautiful, and the visual comfort of the human eye observing the displayed image is improved. Specifically, the reflected color sRGB value of P-polarized light has red R, green G, and blue B, the value range of red R is 0-255, the value range of green G is 0-255, and the value range of blue B is 0-255, the difference between R, G, and B is calculated to obtain ΔRG=|R-G|, ΔRB=|R-B|, and ΔGB=|G-B|, and the maximum value of ΔRG, ΔRB, and ΔGB is the maximum difference U.

[0066] In some embodiments, in order to ensure that the displayed image has brightness, saturation, and hue that meet the visual comfort of the human eye, preferably the red R=170-200, the green G=170-200, and the blue B=170-200, and specific examples include R=171, G=175, B=176, or R=173, G=178, B=177, or R=177, G=178, B=177, or R=178, G=180, B=186, or R=183, G=185, B=196, etc. More preferably, R≤G and / or R≤B, so that color deviation of the displayed image towards red or yellow is avoided.

[0067] In order to improve the overall aesthetics and high-grade feel of the laminated glass 10 and avoid color deviation of the appearance color of the display area when observed from inside the vehicle, the reflected color of the display area 103 has Lab values when measured from the fourth surface 132 side, and the ab values satisfy -5≤a≤2 and -5≤b≤2, or -3≤a≤1 and -3≤b≤1, or -1≤a≤0 and -1≤b≤0, for light emitted by a D65 light source at an incident angle of 65°.

[0068] The display area 103 described in the present application has an S light reflectivity RLs for S polarized light with a wavelength of 380-780 nm at an incident angle of 65°, and the S light reflectivity RLs≤20%, which can be exemplified by 20%, 15%, 10%, 5%, etc. Preferably, the S light reflectivity RLs≤15%, more preferably the S light reflectivity RLs≤10%, further preferably the S light reflectivity RLs≤5%, so as to weaken or even eliminate the instrument table reflection of the display area 103, avoid interfering with the field of view of the person in the vehicle, and also weaken or even eliminate the glare caused by the too high projection brightness of the projection device 20, thereby improving the display effect. In some embodiments, the ratio of the P light reflectivity RLp to the S light reflectivity RLs is RLp / RLs=2.5-4, so that the reflectivity of the display area 103 to P polarized light is much greater than the reflectivity of the display area 103 to S polarized light, which can both enhance the reflection of P polarized light to realize projection display and reduce the reflection of S polarized light to weaken or even eliminate the instrument table reflection of the display area 103, avoiding interfering with the field of view of the person in the vehicle. Alternatively, RLp / RLs=2.5-3.5; further alternatively, RLp / RLs=2.5-3. The ratio of RLp / RLs can be exemplified by 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.3, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, etc.

[0069] As shown in FIG. 4, the laminated glass 10 includes a first glass sheet 11 having a first face 111 and a second face 112, a second glass sheet 13 having a third face 131 and a fourth face 132, a bonding layer 12 connecting the second face 112 and the third face 131, a shielding layer 14 disposed in the shielding area 102, and a reflective element 15 disposed in the shielding area 102 and covering at least the display area 103, the shielding layer 14 being located between the first glass sheet 11 and the reflective element 15.

[0070] The projection device 20 is configured to generate a projection light 201, the projection light 201 contains at least 80% P-polarized light, the projection light 201 is incident on the display area 103 at an incident angle of 38°-85°, the display area 103 reflects the projection light 201 to form a display image that can be observed by the person in the vehicle, especially for the driver, the image can be observed without bending down, the driver's field of view is better, the line of sight is longer for observing the external situation, at the same time, the necessary information for assisting driving can be obtained more easily, the driving safety is greatly improved, so that the traditional instrument panel can be partially replaced or even completely replaced, and even the traditional instrument panel can be cancelled. At the same time, the shielding area 102 is also commonly referred to as a black border area, the reflective element 15 is arranged in the shielding area 102, and the shielding layer 14 is located between the first glass plate 11 and the reflective element 15, the shielding layer 14 can shield the reflective element 15 in the thickness direction of the laminated glass 10, the shielding layer 14 serves as a display background of the image display, can better shield the external environmental light, avoid unnecessary interference of the line of sight, and can also improve the contrast of the display image and the display background and realize a higher color gamut, so that the image display is clearer.

[0071] Specifically, the first glass plate 11 is an outer glass plate of the laminated glass 10, the first glass plate 11 has a first surface 111 and a second surface 112, the first surface 111 is away from the bonding layer 12 and contacts the external environment, and the second surface 112 is close to the bonding layer 12; the second glass plate 13 is an inner glass plate of the laminated glass 10, the second glass plate 13 has a third surface 131 and a fourth surface 132, the third surface 131 is close to the bonding layer 12, and the fourth surface 132 is away from the bonding layer 12 and contacts the internal environment; and the bonding layer 12 connects the second surface 112 and the third surface 131.

[0072] Specifically, the first glass plate 11 is an outer glass plate of the laminated glass 10, the first glass plate 11 has a first surface 111 and a second surface 112, the first surface 111 is away from the bonding layer 12 and contacts the external environment, and the second surface 112 is close to the bonding layer 12; the second glass plate 13 is an inner glass plate of the laminated glass 10, the second glass plate 13 has a third surface 131 and a fourth surface 132, the third surface 131 is close to the bonding layer 12, and the fourth surface 132 is away from the bonding layer 12 and contacts the internal environment; and the bonding layer 12 connects the second surface 112 and the third surface 131.

[0073] The adhesive layer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the adhesive layer 12 is 0.38mm to 2.28mm. For example, the thickness of the adhesive layer 12 can be, but is not limited to, 0.38mm, or 0.76mm, or 1.14mm, or 1.52mm, or 1.9mm, or 2.28mm, or other values between 0.38mm and 2.28mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). When the adhesive layer 12 is a transparent thermoplastic polymer, the visible light transmittance of the transparent thermoplastic polymer is greater than or equal to 80%. For example, the visible light transmittance of the adhesive layer 12 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, etc. When the adhesive layer 12 is a colored thermoplastic polymer film, the visible light transmittance of the colored thermoplastic polymer film is greater than or equal to 80%. For example, the visible light transmittance of the adhesive layer 12 can be, but is not limited to, 80%, or 85%, or 90%, etc. The colored thermoplastic polymer film can be selected from a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film. For example, the adhesive layer 12 can be a single-layer structure or a multi-layer structure, and the multi-layer structure can be, for example, a double-layer structure, a triple-layer structure, a four-layer structure, a five-layer structure, etc. The adhesive layer 12 can also have other functions, such as providing at least one colored area as a shadow band to reduce the interference of sunlight on the human eye, or adding an infrared absorber to have a sunscreen or heat insulation function, or adding an ultraviolet absorber to have an ultraviolet shielding function, or having a higher plasticizer content in at least one layer of the multi-layer structure to have a sound insulation function.

[0074] The material of the shielding layer 14 is selected from at least one of a dark ink, an opaque polymer film, and a light control film.

[0075] The dark ink can be a ceramic ink or a UV ink, which is printed on the second surface 112, the third surface 131, and / or the fourth surface 132 by a process such as screen printing or inkjet printing, and forms the shielding layer 14 after curing or high-temperature sintering. The thickness of the shielding layer 14 formed by the dark ink is 5μm to 40μm.

[0076] The opaque polymer film can be a bulk-colored polymer film, such as adding black or brown coloring components in the polymer film manufacturing process, etc.; can be a polymer film printed with surface ink, paint or pigment, such as printing black ink, black paint or brown pigment on the surface of the polymer film, etc.; can also be a dyed or colored polymer film, such as coloring the polymer film with black or brown dye, etc.; the material of the polymer film can be polyvinyl butyral (PVB), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polycarbonate (PC), polymethyl methacrylate (PMMA), etc.; the opaque polymer film is arranged in the bonding layer 12, for example, the bonding layer 12 can be two pieces of thermoplastic polymer film, and the opaque polymer film is sandwiched between the two pieces of thermoplastic polymer film.

[0077] The light modulation film can be a polymer dispersed liquid crystal film (PDLC), a suspended particle film (SPD), an electrochromic film (EC), a dye liquid crystal film (LC), etc. The minimum visible light transmittance of the light modulation film is less than or equal to 3%, such as 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the light modulation film is set as needed, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. Specifically, for example: the visible light transmittance of the light modulation film can be adjusted between 0% and 20%, can also be adjusted between 0.5% and 50%, can also be adjusted between 0% and 70%, etc. The light modulation film can meet the requirements of visible light transmittance in multiple scenarios, such as when black border display is required, the light modulation film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast between the display image and the display background, and when no display is performed, the light modulation film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater area transparency of the vehicle window glass; the light modulation film is arranged in the bonding layer 12, for example, the bonding layer 12 can be two pieces of thermoplastic polymer film, and the light modulation film is sandwiched between the two pieces of thermoplastic polymer film.

[0078] The reflective element 15 is used to increase the reflectivity of the display area 103 to P-polarized light while reducing the reflectivity of the display area 103 to S-polarized light. The reflective element 15 can be exemplified as a high-low refractive index stack, a metal stack, a holographic film, a stacked polymer film, etc. The reflective element 15 can be arranged on the second surface 112, or can be arranged between the second surface 112 and the third surface 131, or can be arranged on the third surface 131, or can be arranged on the fourth surface 132.

[0079] The reflective element 15 can be a high-low refractive index stack, which includes at least one stack structure, each stack structure including high refractive index layers and low refractive index layers stacked in sequence, the high refractive index layers having a refractive index greater than or equal to 1.9, the low refractive index layers having a refractive index less than 1.8, the high-low refractive index stack having a physical thickness of 100 nm to 800 nm, the high refractive index layers and the low refractive index layers being deposited onto the fourth surface 132 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. The high-low refractive index stack can be composed of only one stack structure of "high refractive index layer / low refractive index layer", or can include at least two stack structures, for example two, three or four stack structures. The material of the high refractive index layers can include oxides or alloy oxides or nitrides or oxynitrides of zirconium (Zr), niobium (Nb), silicon (Si), antimony (Sb), tin (Sn), zinc (Zn), indium (In), aluminum (Al), nickel (Ni), chromium (Cr), magnesium (Mg), manganese (Mn), vanadium (V), tungsten (W), hafnium (Hf), tantalum (Ta), molybdenum (Mo), gallium (Ga), yttrium (Y), bismuth (Bi), titanium (Ti), etc., for example zinc tin oxide (ZnSnOx), titanium oxide (TiOx), niobium oxide (NbOx), silicon nitride (SiNx), silicon aluminum nitride (SiAlNx), silicon zirconium nitride (SiZrNx), etc. In order to better achieve the optical performance, mechanical performance and appearance color of the reflective element 15, which meet the comprehensive requirements of the vehicle window glass, the high refractive index layer can be a single layer structure, or a multi-layer structure including at least two high refractive index sub-layers, the difference between the refractive indices of the two adjacent high refractive index sub-layers being greater than or equal to 0.1. The material of the low refractive index layers can include oxides or alloy oxides or oxynitrides or carbides or fluorides of silicon (Si), aluminum (Al), magnesium (Mg), zirconium (Zr), etc., for example silicon oxide (SiO2), silicon aluminum oxide (SiAlOx), silicon zirconium oxide (SiZrOx), aluminum oxide (Al2O3), magnesium oxide (MgO), magnesium fluoride (MgF), etc. In order to better achieve the optical performance, mechanical performance and appearance color of the reflective element 15, which meet the comprehensive requirements of the vehicle window glass, the low refractive index layer can be a single layer structure, or a multi-layer structure including at least two low refractive index sub-layers.

[0080] The reflective element 15 can be a metal stack, the metal stack comprising at least two dielectric layers and at least one metal layer, each metal layer being located between two adjacent dielectric layers, the physical thickness of the metal stack being 100 nm to 500 nm, the metal layer and the dielectric layer can be deposited to the second surface 112 or the third surface 131 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. The number of metal layers can be exemplarily 1, 2, 3, 4 or 5, etc., the material of the metal layer is selected from at least one of silver (Ag), gold (Au), copper (Cu) and aluminum (Al), the material of the metal layer is preferably silver or silver alloy. The silver alloy is an alloy of silver and at least one of copper (Cu), gold (Au), platinum (Pt), nickel (Ni), chromium (Cr), titanium (Ti), aluminum (Al), indium (In), zinc (Zn), tin (Sn), the content of silver in the silver alloy is greater than or equal to 90%, preferably greater than or equal to 95%. The material of the dielectric layer is selected from at least one of oxides, nitrides or oxynitrides of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, Sm. For example, it can be zinc tin oxide (ZnSnOx), aluminum-doped zinc oxide (AZO), titanium oxide (TiOx), silicon zirconium nitride (SiZrN), silicon aluminum nitride (SiALN), silicon aluminum oxide (SiAlO), etc.

[0081] The reflective element 15 can be a holographic film, the holographic (HOE) film refers to a film based on the principle of holographic action, an interference pattern is formed in the holographic film, after the projection light 201 is incident on the holographic film, diffraction occurs under the action of the interference pattern to form an image that can be observed by the person in the vehicle, selecting the holographic film is beneficial to improve the geometric design freedom of the incidence angle of the projection light 201 and is beneficial to weaken or even eliminate ghosting. Preferably, the thickness of the holographic film is preferably 100 μm to 600 μm, which can be exemplarily 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, 550 μm, 600 μm, etc., and more preferably 50 μm to 300 μm.

[0082] The reflective element 15 can be a laminated polymer film, preferably having a thickness of 20-500 μm, for example 20, 50, 80, 100, 120, 150, 180, 200, 250, 300, 350, 400, 450, 500 μm or more, more preferably 50-300 μm. The laminated polymer film is composed of tens, hundreds or even thousands of thin films of two different refractive index resins alternately laminated together. The material of the thin film can be at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (sPS), polybutylene terephthalate (PBT), poly(cyclohexylendimethylene terephthalate) (PCT), polyetherimide (PEI) and polymethacrylimide (PMI). The laminated polymer film can be obtained from the market, for example from 3M Company, Toray Industries, Inc., Shikoku Chemicals Corporation and Eastman Chemical Company.

[0083] In the present application, the shielding layer 14 in the bottom shielding area 1021 is located between the first glass sheet 11 and the reflective element 15, i.e. the shielding layer 14 in the bottom shielding area 1021 is closer to the first surface 111 than the reflective element 15, and the reflective element 15 is completely located in the bottom shielding area 1021, so that the shielding layer 14 can shield the reflective element 15 and other installed accessories from being seen from outside the vehicle, and also serve as a display background for the reflective element 15 to form an image.

[0084] In FIG. 5, the shielding layer 14 in the bottom shielding area 1021 is directly disposed on the second surface 112, and the reflective element 15 is directly disposed on the fourth surface 132; in FIG. 6, the shielding layer 14 in the bottom shielding area 1021 is directly disposed on the third surface 131, and the reflective element 15 is directly disposed on the fourth surface 132; in FIG. 7, the shielding layer 14 in the bottom shielding area 1021 is directly disposed in the adhesive layer 12, and the reflective element 15 is directly disposed on the fourth surface 132; and in FIG. 8, the shielding layer 14 in the bottom shielding area 1021 is directly disposed on the fourth surface 132, and the reflective element 15 is directly disposed on the surface of the shielding layer 14 facing away from the fourth surface 132.

[0085] In FIG. 4, the reflective element 15 is slightly lower than the shielding layer 14 in the bottom shielding area 1021, i.e., the height of the reflective element 15 is less than the height of the shielding layer 14 in the bottom shielding area 1021, so as to achieve better shielding effect of the reflective element 15 after the laminated glass 10 is installed. In FIG. 5, the reflective element 15 is flush with or slightly higher than the shielding layer 14 in the bottom shielding area 1021, i.e., the height of the reflective element 15 is greater than or equal to the height of the shielding layer 14 in the bottom shielding area 1021, so as to achieve better visual effect after the laminated glass 10 is installed, and considering the overall appearance, preferably, the difference between the height of the reflective element 15 and the height of the shielding layer 14 in the bottom shielding area 1021 is h, 0≤h≤10mm, or 0≤h≤8mm, or 0≤h≤5mm, and specific examples can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 9.5mm, etc. Among them, the height of the reflective element 15 and the height of the shielding layer 14 in the bottom shielding area 1021 are the heights in the direction from the bottom shielding area 1021 to the top shielding area 1023.

[0086] As shown in FIG. 9, the shielding layer 14 in the bottom shielding area 1021 is composed of a first shielding sublayer 141 and a second shielding sublayer 142, the material of the first shielding sublayer 141 is dark ink, and the material of the second shielding sublayer 142 is an opaque polymer film or a light-adjustable film, and preferably the second shielding sublayer 142 is a light-adjustable film, which can better meet the requirements of visible light transmittance in multiple scenes, for example, when image display is required, the light-adjustable film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast of the displayed image and the display background, and when no display is performed, the light-adjustable film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater transparency of the laminated glass 10 and improves the field of view of the person inside the vehicle for observing the environment outside the vehicle. Specifically, the first shielding sublayer 141 is directly arranged on the second surface 112, and the second shielding sublayer 142 is arranged in the bonding layer 12; it can be understood that other forms can also be arranged according to actual conditions, for example, the second shielding sublayer 142 is arranged in the bonding layer 12, and the first shielding sublayer 141 is directly arranged on the third surface 131, and for example, the second shielding sublayer 142 is arranged in the bonding layer 12, and the first shielding sublayer 141 is directly arranged on the fourth surface 132.

[0087] As shown in FIG. 10, the laminated glass 10 described in the present application further comprises a heat insulation layer 16, which can make the laminated glass 10 have excellent heat insulation performance, thereby improving the thermal comfort of the vehicle interior environment, preferably the total solar energy transmittance of the laminated glass 10 with the heat insulation layer 16 is less than or equal to 55%, more preferably less than or equal to 50%, even less than or equal to ≤45%. The lower the total solar energy transmittance, the better the heat insulation performance of the laminated glass 10. The heat insulation layer 16 can be arranged on the second surface 112, or arranged in the bonding layer 12, or arranged on the third surface 131, or arranged on the fourth surface 132; and, preferably the heat insulation layer 16 is not located on the same surface as the reflective element 15.

[0088] The heat insulation layer 16 can be at least one selected from a single silver nano-coating, a double silver nano-coating, a triple silver nano-coating, a quadruple silver nano-coating, an ITO nano-coating, an FTO nano-coating, and an infrared barrier micron-coating.

[0089] The single silver nano-coating, the double silver nano-coating, the triple silver nano-coating, and the quadruple silver nano-coating can be formed by a magnetron sputtering process, and their physical thickness is preferably 100nm to 500nm. The single silver nano-coating is a transparent nano-coating with one silver layer and at least two dielectric layers, the double silver nano-coating is a transparent nano-coating with two silver layers and at least three dielectric layers, the triple silver nano-coating is a transparent nano-coating with three silver layers and at least four dielectric layers, and the quadruple silver nano-coating is a transparent nano-coating with four silver layers and at least five dielectric layers. The material of the dielectric layer is selected from at least one oxide, nitride, or oxynitride of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm.

[0090] The ITO nano-coating can be formed by a magnetron sputtering process, and the physical thickness of the ITO nano-coating is preferably 100nm to 500nm. The ITO nano-coating is a transparent nano-coating with at least one ITO (indium tin oxide) functional layer and at least two dielectric layers, and the material of the dielectric layer is selected from at least one oxide, nitride, or oxynitride of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm. The FTO nano-coating can be formed by a chemical vapor deposition process (CVD), and the physical thickness of the FTO nano-coating is preferably 50nm to 500nm. The FTO nano-coating is a transparent nano-coating with at least one FTO (fluorine-doped tin oxide) functional layer.

[0091] The infrared blocking micrometer coating can be formed by a sol-gel method, the infrared absorbing micrometer coating has a thickness of 5 μm to 30 μm, the infrared blocking micrometer coating is a transparent micrometer coating with infrared blocking nanoparticles, and the infrared blocking nanoparticles can be made of at least one of ITO (indium tin oxide), FTO (fluorine-doped tin oxide), CWO (cesium-doped tungsten oxide), LaB6 (lanthanum hexaboride), and V2O5 (vanadium pentoxide). The infrared blocking nanoparticles have an average particle size of 20 nm to 100 nm.

[0092] In FIG. 10, the heat insulation layer 16 and the reflective element 15 are not located on the same surface, and the projection of the reflective element 15 on the heat insulation layer 16 at least partially overlaps the heat insulation layer 16, and the heat insulation layer 16 is closer to the first surface 111 than the reflective element 15, which facilitates simplifying the production process of the heat insulation layer 16 and the reflective element 15. Specifically, the heat insulation layer 16 is directly arranged on the third surface 131, and the reflective element 15 is directly arranged on the fourth surface 132. The present application can also exemplify the heat insulation layer 16 directly arranged on the second surface 112, the reflective element 15 directly arranged on the fourth surface 132, and the like.

[0093] In other embodiments, the heat insulation layer 16 and the reflective element 15 are not located on the same surface, and the reflective element 15 and the heat insulation layer 16 do not overlap each other in the thickness direction of the laminated glass 10, which can avoid the heat insulation layer 16 reflecting the projected light 201 to interfere with the image formed by the reflective element 15.

[0094] In other embodiments, the heat insulation layer 16 and the reflective element 15 are located on the same surface, and the reflective element 15 and the heat insulation layer 16 do not overlap each other, which can avoid the heat insulation layer 16 reflecting the projected light 201 to interfere with the image formed by the reflective element 15.

[0095] In other embodiments, the heat insulation layer 16 and the reflective element 15 are located on the same surface, and the projection of the reflective element 15 on the heat insulation layer 16 at least partially overlaps the heat insulation layer 16, and the heat insulation layer 16 is closer to the first surface 111 than the reflective element 15. Specifically, the heat insulation layer 16 can be arranged first, and then the reflective element 15 is continuously arranged on the local surface of the heat insulation layer 16.

[0096] In the present application, when the projection of the reflecting element 15 on the thermal insulation layer 16 at least partially overlaps the thermal insulation layer 16, preferably, the transparent glass plate provided with the reflecting element 15 having a thickness of 2.1 mm and a visible light transmittance greater than 88% has a visible light transmittance less than or equal to 30%, which can also be preferably less than or equal to 25%, more preferably less than or equal to 20%, further preferably less than or equal to 15%, more further preferably less than or equal to 10%, even less than or equal to 5%, more even less than or equal to 1%, so as to weaken or even eliminate the interference of the reflection of the projection light 201 by the thermal insulation layer 16 on the image formed by the reflecting element 15, and to save the use of the shielding layer 14 to a certain extent or even partially replace the shielding layer 14, which is conducive to reducing the manufacturing cost of the laminated glass 10.

[0097] As shown in FIG. 11, the laminated glass 10 described in the present application further comprises an electric heating element 17 and at least two bus bars 18, the bus bars 18 are electrically connected with the electric heating element 17, one of the bus bars 18 is electrically connected with the positive pole of a power supply (not shown), and the other bus bar 18 is electrically connected with the negative pole of the power supply (not shown), the current of the power supply is input to the electric heating element 17 through the at least two bus bars 18, so that the electric heating element 17 generates heat to heat the laminated glass 10 to achieve the functions of defrosting, defogging, snow removal or even ice removal, and further improve the driving safety. The electric heating element 17 can be arranged on the second surface 112, the third surface 131, the fourth surface 132 or in the bonding layer 12, and the bus bars 18 are located between the second surface 112 and the third surface 131. The voltage of the power supply described in the present application is 12V to 380V, and the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 400W / m 2 . Exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 800W / m 2 . Yet exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 1000W / m 2 . Further exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 2000W / m 2 .

[0098] The electric heating element 17 can be a single-silver electric heating coating, a double-silver electric heating coating, a triple-silver electric heating coating, a quadruple-silver electric heating coating, a quintuple-silver electric heating coating, a TCO electric heating coating, a metal wire, a printed silver paste wire, a nano-silver wire, a carbon fiber wire, a metal mesh or a graphene heating sheet. The single-silver electric heating coating, the double-silver electric heating coating, the triple-silver electric heating coating, the quadruple-silver electric heating coating, the quintuple-silver electric heating coating and the TCO electric heating coating can be formed by a physical vapor deposition process (PVD) or a chemical vapor deposition process (CVD), and their physical thickness is preferably 100 nm to 500 nm. The single-silver electric heating coating is a transparent nano-coating with one silver layer and at least two dielectric layers, the double-silver electric heating coating is a transparent nano-coating with two silver layers and at least three dielectric layers, the triple-silver electric heating coating is a transparent nano-coating with three silver layers and at least four dielectric layers, the quadruple-silver electric heating coating is a transparent nano-coating with four silver layers and at least five dielectric layers, and the quintuple-silver electric heating coating is a transparent nano-coating with five silver layers and at least six dielectric layers. The TCO electric heating coating is a transparent nano-coating with at least one transparent conductive oxide (TCO) functional layer, the material of the TCO functional layer can be ITO (indium tin oxide), FTO (fluorine-doped tin oxide) or AZO (aluminum-doped zinc oxide), etc., and the TCO electric heating coating can also include at least one dielectric layer. The material of the dielectric layer is selected from oxides, nitrides or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu and Sm. The metal wire can be at least one of a copper wire, a tungsten wire, an aluminum wire or a copper alloy wire, and the diameter of the metal wire is 0.01 mm-0.5 mm. The printed silver paste wire has a printed line width of 0.1 mm-1.0 mm and a printed thickness of 3 μm-20 μm. The nano-silver wire, the carbon fiber wire, the metal mesh or the graphene heating sheet can be purchased on the market.

[0099] In FIG. 11, the laminated glass 10 described in the present application is additionally provided with a shielding layer 14 on the fourth surface 132, and the reflecting element 15 is arranged on the surface of the additionally provided shielding layer 14 facing away from the fourth surface 132. The additionally provided shielding layer 14 can shield the busbar 18 and other accessories, and can also prevent the projection light 201 from entering the laminated glass 10 and being reflected by the electric heating element 17 to form a ghost image.

[0100] In some embodiments, the reflective element 15 is a high-low refractive index stack arranged on the fourth surface 132, and the projection light 201 is directly incident on the high-low refractive index stack, so that the propagation of the projection light 201 can be avoided from being disturbed by other elements. Specifically, the high-low refractive index stack can be directly arranged on the fourth surface 132, or indirectly arranged on the fourth surface 132. For example, the fourth surface 132 is provided with a shielding layer 14, and the high-low refractive index stack is directly arranged on the surface of the shielding layer 14 away from the fourth surface 132. For another example, the fourth surface 132 is provided with an ultra-thin substrate, and the high-low refractive index stack is directly arranged on the surface of the ultra-thin substrate away from the fourth surface 132. The thickness of the ultra-thin substrate is 0.05 mm to 1.0 mm, and can be exemplified as 0.05 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc. The material of the ultra-thin substrate can be soda-lime glass, or high-aluminum glass, or lithium-aluminum glass, or borosilicate glass, or polyethylene terephthalate (PET), or polycarbonate (PC), etc.

[0101] When the high-low refractive index stack is directly arranged on the fourth surface 132, as shown in FIG. 12, the high-low refractive index stack can be composed of only one stack structure, i.e., a first high refractive index layer 152 and a first low refractive index layer 153 which are sequentially stacked. Alternatively, as shown in FIG. 13, the high-low refractive index stack is composed of two stack structures, i.e., a first high refractive index layer 152, a first low refractive index layer 153, a second high refractive index layer 154, and a second low refractive index layer 155 which are sequentially stacked. Alternatively, the high-low refractive index stack is composed of three stack structures, i.e., a first high refractive index layer, a first low refractive index layer, a second high refractive index layer, a second low refractive index layer, a third high refractive index layer, and a third low refractive index layer which are sequentially stacked. Alternatively, the high-low refractive index stack is composed of four stack structures, i.e., a first high refractive index layer, a first low refractive index layer, a second high refractive index layer, a second low refractive index layer, a third high refractive index layer, a third low refractive index layer, a fourth high refractive index layer, and a fourth low refractive index layer which are sequentially stacked.

[0102] Preferably, as shown in FIG. 12, one layer of the reflective element 15 in direct contact with the fourth surface 132 is a high refractive index layer, i.e., the first high refractive index layer 152 is in direct contact with the fourth surface 132, and one layer of the reflective element 15 farthest from the fourth surface 132 is a low refractive index layer, i.e., one layer of the reflective element 15 in contact with air is a low refractive index layer. More preferably, the physical thickness of the low refractive index layer of the reflective element 15 farthest from the fourth surface 132 is 80 nm to 240 nm, and can be specifically exemplified by 80 nm, 85 nm, 90 nm, 95 nm, 100 nm, 105 nm, 110 nm, 115 nm, 120 nm, 125 nm, 130 nm, 135 nm, 140 nm, 145 nm, 150 nm, 160 nm, 170 nm, 180 nm, 190 nm, 200 nm, 210 nm, 220 nm, 230 nm, 240 nm, or a range between any two of these values. Alternatively, the physical thickness of the low refractive index layer of the reflective element 15 farthest from the fourth surface 132 is 90 nm to 200 nm. Further alternatively, the physical thickness of the low refractive index layer of the reflective element 15 farthest from the fourth surface 132 is 100 nm to 180 nm.

[0103] In other embodiments, as shown in FIG. 13, the reflective element 15 is a high-low refractive index stack disposed on the fourth surface 132, the high-low refractive index stack includes at least one stack structure and at least one reflection enhancement layer, the material of the reflection enhancement layer is selected from at least one of the following: a single element or an alloy of Si (silicon), Ni (nickel), Cr (chromium), Al (aluminum), Ti (titanium), Nb (niobium), Mo (molybdenum), Sn (tin), Zn (zinc), Zr (zirconium), and Mg (magnesium), and can be specifically exemplified by crystalline Si, Al, NiCr, etc., the reflection enhancement layer is beneficial to improve the reflectivity of the reflective element 15 to P-polarized light and reduce the reflectivity of the reflective element 15 to S-polarized light.

[0104] The material of the reflection enhancement layer in the high-low refractive index stack does not contain gold or silver, ensuring that the high-low refractive index stack has excellent properties such as acid resistance, alkali resistance, and abrasion resistance, meeting the requirements of the national standard GB / T 9656, so that the high-low refractive index stack can be applied to the fourth surface 132 of the laminated glass 10, i.e., exposed to air for use. It can be understood that the reflection enhancement layer is manufactured by a magnetron sputtering process. In order to better combine the reflection enhancement layer with other layers in the high-low refractive index stack, the application can also optionally introduce a small amount of oxygen and / or nitrogen into the sputtering cavity during the magnetron sputtering process of the reflection enhancement layer, forming at least one of an oxide, a nitride, and an oxynitride of the element or the alloy, i.e., the reflection enhancement layer also contains a sub-stoichiometric amount of at least one of an oxide, a nitride, and an oxynitride of the element or the alloy, such as NiCr and NiCrOx, or NiCr and NiCrNx, etc., x is determined according to the sub-stoichiometric deposition in the magnetron sputtering process.

[0105] The total physical thickness of the reflection enhancement layer is greater than 10 nm, which can be exemplified as 11 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, 55 nm, 60 nm, etc.; preferably, the total physical thickness of the reflection enhancement layer is greater than or equal to 15 nm; further preferably, the total physical thickness of the reflection enhancement layer is 20 nm to 50 nm; which can effectively improve the reflectivity of the reflection element 15 to P-polarized light and reduce the reflectivity of the reflection element 15 to S-polarized light, and is also conducive to simplifying the manufacturing process of the reflection enhancement layer.

[0106] In FIG. 13, the high-low refractive index stack includes two reflection enhancement layers, the reflection enhancement layer closest to the fourth surface 132 is the first reflection enhancement layer 150, and the reflection enhancement layer farthest from the fourth surface 132 is the second reflection enhancement layer 151.

[0107] The physical thickness of the first reflection enhancement layer 150 is greater than or equal to 5 nm, which can be exemplified as 5 nm, 8 nm, 10 nm, 11 nm, 15 nm, 20 nm, 25 nm, 30 nm, etc.; preferably, the physical thickness of the first reflection enhancement layer 150 is 8 nm to 30 nm.

[0108] The physical thickness of the second reflection enhancement layer 151 is greater than or equal to 15 nm, for example, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, etc. Preferably, the physical thickness of the second reflection enhancement layer 151 is 20 nm to 40 nm. Further preferably, the physical thickness of the second reflection enhancement layer 151 is 20 nm to 35 nm. This can effectively improve the reflectivity of the P-polarized light of the reflection element 15 and reduce the reflectivity of the S-polarized light of the reflection element 15, and is also conducive to simplifying the manufacturing process of the reflection enhancement layer.

[0109] In yet some embodiments, the high-low refractive index stack further comprises at least one transition layer 156 between the first reflection enhancement layer 150 and the fourth surface 132. The transition layer 156 is used to protect the first reflection enhancement layer 150 from damage by alkali metal ions in the glass, etc., and to improve the bonding force of the first reflection enhancement layer 150 and the fourth surface 132. The transition layer 156 can also adjust the optical performance and appearance color of the high-low refractive index stack, etc. The material of the transition layer 156 can be selected from at least one of oxides and oxynitrides, such as SiO2, SiONx, etc.

[0110] The reflection element 15 comprises at least one reflection enhancement layer. The reflection enhancement layer can be located in the stack structure, or between the fourth surface 132 and the stack structure, or between two adjacent stack structures.

[0111] Specifically, one reflection enhancement layer is located between the high refractive index layer and the low refractive index layer in any stack structure. Alternatively, one reflection enhancement layer is located in the high refractive index layer in any stack structure, and the high refractive index layer comprises at least two sub-layers, and the reflection enhancement layer is located between the two sub-layers of the high refractive index layer. Alternatively, one reflection enhancement layer is located in the low refractive index layer in any stack structure, and the low refractive index layer comprises at least two sub-layers, and the reflection enhancement layer is located between the two sub-layers of the low refractive index layer.

[0112] In some embodiments, as shown in FIGS. 5, 6, and 7, the laminated glass 10 further comprises a decorative layer 19 provided on the fourth surface 132. The decorative layer 19 is provided in the shielding area 102, the reflection element 15 is provided on the fourth surface 132, and the decorative layer 19 is provided around the reflection element 15. The material of the decorative layer 19 is selected from at least one of dark ink, an opaque polymer film, and a light-adjustable film. The decorative layer 19 is used to improve the contrast of the displayed image and the surrounding background, and prevent the projection light 201 from entering the laminated glass 10 to form ghosting. Specifically, the decorative layer 19 and the reflection element 15 are both provided on the fourth surface 132, and the decorative layer 19 is located above the reflection element 15. Alternatively, the decorative layer 19 is located to the right of the reflection element 15. Alternatively, the decorative layer 19 is located to the left of the reflection element 15.

[0113] The present application also provides a projection system, comprising the projection device 20 and the laminated glass 10 provided by the present application, the projection device 20 is used to generate the projection light 201, the projection light 201 contains at least 80% of P-polarized light, the projection light 201 is incident into at least one display area 103 in the shielding area 102 at an incident angle of 38°-85°, the display area 103 reflects the projection light 201 to the eyes of the person in the vehicle to form a display image.

[0114] The wavelength of the projection light 201 can be in the range of 380nm-780nm. The projection light 201 can contain at least 80% of P-polarized light, the higher the proportion of P-polarized light in the projection light 201, the more conducive to meet the use requirements of the driver wearing sunglasses and the easier to eliminate the visual ghosting phenomenon of the display image. Exemplarily, the projection light 201 contains at least 85% of P-polarized light, or the projection light 201 contains at least 90% of P-polarized light, or the projection light 201 contains at least 95% of P-polarized light, or even the projection light 201 is 100% of P-polarized light, that is, the projection light 201 is basically pure P-polarized light.

[0115] The present application also provides a vehicle, comprising a vehicle body and the projection system provided by the present application, the projection device 20 of the projection system is installed in the interior of the vehicle body, and the laminated glass 10 of the projection system is installed at the opening of the vehicle body. When the laminated glass 10 is installed on the vehicle, it is preferably used as the front windshield of the vehicle. But not limited to this, the laminated glass 10 can also be used as the rear windshield or the side window glass, thereby providing more display scene applications for the vehicle.

[0116] In order to make the purpose and advantages of the present application more clear, the effects of the laminated glass of the present application are further described in detail below in combination with specific examples.

[0117] In Comparative Example 1-2 and Example 1-5, the high-low refractive index stack is exemplified as a reflective element.

[0118] The present application prepares a transparent glass plate with a thickness of 2.1mm and a visible light transmittance of 90%, and deposits the high-low refractive index stack of Comparative Example 1-2 and Example 1-5 on the surface of the transparent glass plate by a magnetron sputtering process, the specific film layer material and physical thickness are as follows:

[0119] Comparative Example 1 : transparent glass pane / first high lower sub-layer (ZnSnOx 20.5 nm) / first reflection enhancement layer (NiCr 5.1 nm) / first high upper sub-layer (TiO2 70.7 nm) / second reflection enhancement layer (NiCr 22.4 nm) / first low refractive index layer (SiO2 161 nm), i.e. Comparative Example 1 comprises two reflection enhancement layers, the high-low refractive index stack of Comparative Example 1 consists of only one stack structure, the first high refractive index layer comprises the first high lower sub-layer and the first high upper sub-layer, the first high lower sub-layer is in direct contact with the surface of the transparent glass pane, the first reflection enhancement layer is located between the first high lower sub-layer and the first high upper sub-layer, the second reflection enhancement layer is located between the first high upper sub-layer and the first low refractive index layer.

[0120] Comparative Example 2: transparent glass pane / first high refractive index layer (TiOx 40.2 nm) / first low refractive index layer (SiO2 50.6 nm) / first reflection enhancement layer (NiCr 11 nm) / second high refractive index layer (TiO2 100 nm) / second reflection enhancement layer (NiCr 50.5 nm) / second low refractive index layer (SiO2 105.4 nm), i.e. Comparative Example 2 comprises two reflection enhancement layers, the high-low refractive index stack of Comparative Example 2 consists of two stack structures, the first reflection enhancement layer is located between the two stack structures, the second reflection enhancement layer is located between the adjacent second high refractive index layer and the second low refractive index layer.

[0121] Example 1 : transparent glass pane / first high lower sub-layer (ZnSnOx 20.5 nm) / first reflection enhancement layer (NiCr 11 nm) / first high upper sub-layer (TiO2 70.7 nm) / second reflection enhancement layer (NiCr 22.4 nm) / first low refractive index layer (SiO2 105.4 nm), i.e. Example 1 comprises two reflection enhancement layers, the high-low refractive index stack of Example 1 consists of only one stack structure, the first high refractive index layer comprises the first high lower sub-layer and the first high upper sub-layer, the first high lower sub-layer is in direct contact with the surface of the transparent glass pane, the first reflection enhancement layer is located between the first high lower sub-layer and the first high upper sub-layer, the second reflection enhancement layer is located between the first high upper sub-layer and the first low refractive index layer.

[0122] Example 2: transparent glass plate / first high lower sublayer (TiO2 31.4 nm) / first reflection enhancement layer (NiCr 25.6 nm) / first high upper sublayer (TiO2 45.4 nm) / first low lower sublayer (SiO2 44.8 nm) / second reflection enhancement layer (NiCr 24.4 nm) / second low upper sublayer (SiO2 105.4 nm), i.e. example 2 comprises two reflection enhancement layers, the high / low refractive index stack of example 2 consists of only one stack structure, the first high refractive index layer comprises two sublayers, namely the first high lower sublayer and the first high upper sublayer, the first low refractive index layer comprises two sublayers, namely the first low lower sublayer and the first low upper sublayer, the first reflection enhancement layer is located between the two first high refractive index sublayers, the second reflection enhancement layer is located between the two first low refractive index sublayers.

[0123] Example 3: transparent glass plate / first high refractive index layer (TiOx 40.2 nm) / first low refractive index layer (SiO2 50.6 nm) / first reflection enhancement layer (NiCr 11 nm) / second high refractive index layer (TiO2 70.7 nm) / second reflection enhancement layer (NiCr 22.4 nm) / second low refractive index layer (SiO2 105.4 nm), i.e. example 3 comprises two reflection enhancement layers, the high / low refractive index stack of example 3 consists of two stack structures, the first reflection enhancement layer is located between the two stack structures, the second reflection enhancement layer is located between the second high refractive index layer and the second low refractive index layer.

[0124] Example 4: transparent glass plate / transition layer (SiO2 65.1 nm) / first reflection enhancement layer (NiCr 13.9 nm) / first high refractive index layer (TiO2 29.9 nm) / first low refractive index layer (SiO2 52.5 nm) / second high refractive index layer (TiO2 18.0 nm) / second reflection enhancement layer (NiCr 22.4 nm) / second low refractive index layer (SiO2 99.4 nm), i.e. example 4 comprises two reflection enhancement layers and one transition layer, the transition layer is located between the transparent glass plate and the first reflection enhancement layer, the high / low refractive index stack of example 4 consists of two stack structures, the first reflection enhancement layer is located between the transition layer and the first high refractive index layer, the second reflection enhancement layer is located between the adjacent second high refractive index layer and the second low refractive index layer.

[0125] Example 5: transparent glass sheet / first high refractive index layer (ZnSnOx 19.0 nm) / first reflection enhancement layer (NiCr 17.1 nm) / first low refractive index layer (SiO2 30.3 nm) / second high refractive index layer (TiO2 23.8 nm) / second low refractive index layer (SiO2 36.8 nm) / third high refractive index layer (TiO2 18.2 nm) / second reflection enhancement layer (NiCr 25.1 nm) / third low refractive index layer (SiO2 102.9 nm), i.e. Example 5 comprises two reflection enhancement layers, the high-low refractive index stack of Example 5 is composed of three stack structures, the first reflection enhancement layer is located between the first high refractive index layer and the first low refractive index layer, and the second reflection enhancement layer is located between the third high refractive index layer and the third low refractive index layer.

[0126] The P light reflectance RLp, the S light reflectance RLs, the reflection color R4a and the reflection color R4b, the reflection color sRGB value of the laminated glass having the reflective elements of Comparative Examples 1-2 and Examples 1-5 were measured and the measurement results were tabulated in Table 1.

[0127] P light reflectance RLp: the reflectance of P polarized light having a wavelength of 380-780 nm incident at an incident angle of 65° was measured and calculated from the fourth side according to the standard ISO 9050;

[0128] S light reflectance RLs: the reflectance of S polarized light having a wavelength of 380-780 nm incident at an incident angle of 65° was measured and calculated from the fourth side according to the standard ISO 9050;

[0129] Reflection color R4a: the a value of the reflection color Lab value of light emitted by a D65 light source incident at an incident angle of 65° was measured and calculated from the fourth side based on the standard CIE 1976;

[0130] Reflection color R4b: the b value of the reflection color Lab value of light emitted by a D65 light source incident at an incident angle of 65° was measured and calculated from the fourth side based on the standard CIE 1976;

[0131] Reflection color sRGB value: the reflection color sRGB of P polarized light having a wavelength of 380-780 nm incident at an incident angle of 65° was measured and calculated from the fourth side based on the standard CIE 1931.

[0132] Table 1: performance parameters of the laminated glass having the reflective elements of Comparative Examples 1-2 and Examples 1-5

[0133] As can be seen from Table 1:

[0134] The comparative example 1 has defects of S light reflectance RLs greater than 60%, RLp / RLs less than 1, reflection color R4b greater than 10, G < 170, B < 150 and maximum difference U greater than 30, which results in obvious dashboard reflection and glare of the display area, yellowish appearance color of the display area and yellowish color of the display image, so that the color of the display image is distorted, and the visual comfort of the human eye observing the display image is poor.

[0135] The comparative example 2 has defects of S light reflectance RLs greater than 20%, reflection color R4b greater than 9 and maximum difference U greater than 20, which results in obvious dashboard reflection and glare of the display area, yellowish appearance color of the display area and yellowish color of the display image, so that the color of the display image is distorted, and the visual comfort of the human eye observing the display image is poor.

[0136] The P light reflectance RLp of the examples 1-5 is greater than or equal to 40%, the S light reflectance RLs is less than or equal to 20%, RLp / RLs = 2.5-3, R = 170-180, G = 170-190, B = 170-190 and maximum difference U ≤ 15, so that the brightness of the projection display can be enhanced, the energy utilization rate of the projection device 20 can be improved, and the energy consumption of the projection device 20 can be reduced, which is conducive to the miniaturization and heat dissipation design of the projection device 20; meanwhile, full-color and neutral display can be realized while the brightness of the projection display is enhanced, the color of the display image is prevented from being distorted, the display image is more natural and beautiful, and the visual comfort of the human eye observing the display image is improved; the display image can also have brightness, saturation and hue that meet the visual comfort of the human eye, and the color of the display image can be prevented from being biased towards red or yellow. Specifically, the P light reflectance RLp of the examples 1-5 is 42%-48%, the S light reflectance RLs is ≤ 18% or RLs ≤ 15%, the maximum difference U is ≤ 10 or U ≤ 8 or U ≤ 5.

[0137] In addition, the reflection color R4a of the display area is -2 to 0, and the reflection color R4b is -3 to 0, so that the appearance color of the display area is close to neutral, and the overall appearance and high-grade feel of the laminated glass 10 are improved. Specifically, the reflection color R4a is -1 to 0, or the reflection color R4b is -2 to 0 or -1 to 0.

[0138] The above provides the content of the embodiments of the present application, and the principles and embodiments of the present application are described and explained in this paper. The above description is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific embodiments and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A laminated glass, characterized by, The laminated glass has a light-transmitting region and a shielding region; The visible light transmittance of the light-transmitting region is greater than or equal to 70%, and the visible light transmittance of the shielding region is less than or equal to 5%; At least one display region is arranged in the shielding region, the display region has a P light reflectance RLp for P polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, the P light reflectance RLp is greater than or equal to 30%, and the display region has a maximum difference U in reflection color sRGB values for P polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, the maximum difference U is less than or equal to 15.

2. Laminated glass according to claim 1, characterized in that The maximum difference U is less than or equal to 10, or the maximum difference U is less than or equal to 8, or the maximum difference U is less than or equal to 5, or the maximum difference U is less than or equal to 3.

3. The laminated glass according to claim 1, wherein The P light reflectance RLp is 40%-70%, or the P light reflectance RLp is 40%-60%, or the P light reflectance RLp is 40%-50%, or the P light reflectance RLp is 50%-60%, or the P light reflectance RLp is 42%-48%.

4. The laminated glass according to claim 1, wherein The display region has an S light reflectance RLs for S polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, the S light reflectance RLs is less than or equal to 20%, or the S light reflectance RLs is less than or equal to 15%, or the S light reflectance RLs is less than or equal to 10%.

5. The laminated glass according to claim 4, wherein The ratio RLp / RLs of the P light reflectance RLp to the S light reflectance RLs is 2.5-4, or RLp / RLs is 2.5-3.5, or RLp / RLs is 2.5-3.

6. The laminated glass according to claim 1, wherein The reflection color sRGB value has red R, green G and blue B, R=170-200, G=170-200, and B=170-200.

7. The laminated glass according to claim 6, wherein R≤G and / or R≤B.

8. The laminated glass according to claim 1, wherein The display region has a reflection color with Lab values for light emitted by a D65 light source incident at an incident angle of 65°, -5≤a≤2 and -5≤b≤2, or -3≤a≤1 and -3≤b≤1, or -1≤a≤0 and -2≤b≤0.

9. The laminated glass of claim 1, wherein The ratio of the total area of the shielding region to the area of the laminated glass is 5%-50%, or 10%-45%, or 15%-40%, or 20%-35%.

10. The laminated glass of claim 1, wherein The shielding region includes a bottom shielding region located below the light-transmitting region, and the display region is located in the bottom shielding region.

11. Laminated glass according to claim 10, characterized in that The ratio of the total area of the display region to the area of the bottom shielding region is 10%-110%, or 15%-105%, or 20%-100%, or 30%-95%, or 40%-90%.

12. The laminated glass of claim 1, wherein The laminated glass includes a first glass plate, a bonding layer, a second glass plate, a shielding layer and a reflective element, the first glass plate has a first face and a second face, the second glass plate has a third face and a fourth face, the bonding layer connects the second face and the third face, the shielding layer is arranged in the shielding region, the reflective element is arranged in the shielding region and covers at least the display region, and the shielding layer is located between the first glass plate and the reflective element.

13. Laminated glass according to claim 12, characterized in that The material of the shielding layer is selected from at least one of dark ink, opaque polymer film and light control film.

14. The laminated glass of claim 12, wherein The reflective element is selected from at least one of high-low refractive index stack, metal stack, holographic film and stacked polymer film.

15. The laminated glass of claim 12, wherein the interlayer is a copolymer of a polyvinyl acetal. The shielding area includes a bottom shielding area under the light-transmitting area, the display area is located in the bottom shielding area, the height of the reflective element is greater than or equal to the height of the shielding layer in the bottom shielding area, and the difference between the height of the reflective element and the height of the shielding layer in the bottom shielding area is h, 0≤h≤10mm, or 0≤h≤8mm, or 0≤h≤5mm.

16. The laminated glass of claim 12, wherein The shielding area includes a bottom shielding area under the light-transmitting area, the display area is located in the bottom shielding area, the shielding layer in the bottom shielding area is composed of a first shielding sub-layer and a second shielding sub-layer, the material of the first shielding sub-layer is dark ink, and the material of the second shielding sub-layer is opaque polymer film or light control film.

17. The laminated glass of claim 12, wherein The laminated glass further comprises a heat insulation layer selected from at least one of single silver nano coating, double silver nano coating, three silver nano coating, four silver nano coating, ITO nano coating, FTO nano coating and infrared blocking micron coating, and the total solar energy transmittance of the laminated glass with the heat insulation layer is less than or equal to 55%.

18. The laminated glass of claim 12, wherein The laminated glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected with the electric heating element, the electric heating element is single silver electric heating coating, double silver electric heating coating, three silver electric heating coating, four silver electric heating coating, five silver electric heating coating, TCO electric heating coating, metal wire, printed silver paste wire, nano silver wire, carbon fiber wire, metal mesh or graphene heating sheet, and the electric heating element can make the laminated glass have a heating power density of at least 400W / m2.

19. The laminated glass of claim 12, wherein The reflective element is a high-low refractive index stack arranged on the fourth surface, the high-low refractive index stack comprises at least one stack structure, each stack structure comprises a high refractive index layer and a low refractive index layer stacked in sequence, the refractive index of the high refractive index layer is greater than or equal to 1.8, and the refractive index of the low refractive index layer is less than 1.

8.

20. Laminated glass according to claim 19, wherein The high-low refractive index stack is directly arranged on the fourth surface; Alternatively, a shielding layer is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the shielding layer away from the fourth surface; Alternatively, an ultrathin substrate is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the ultrathin substrate away from the fourth surface, the thickness of the ultrathin substrate is 0.05mm to 1.0mm, and the material of the ultrathin substrate is soda-lime glass, high-alumina glass, lithium-alumina glass, borosilicate glass, polyethylene terephthalate or polycarbonate.

21. The laminated glass of claim 19, wherein The farthest layer from the fourth surface in the high-low refractive index stack is a low refractive index layer, and the physical thickness of the low refractive index layer is 80nm to 240nm, or 90nm to 200nm, or 100nm to 180nm.

22. The laminated glass of claim 19, wherein The high-low refractive index stack further comprises at least one reflection enhancement layer, the material of the reflection enhancement layer is selected from at least one of the group consisting of Si, Ni, Cr, Al, Ti, Nb, Mo, Sn, Zn, Zr, Mg in a single element or an alloy, the total physical thickness of the reflection enhancement layer is greater than 10 nm.

23. The laminated glass of claim 22, wherein The reflection enhancement layer closest to the fourth surface is a first reflection enhancement layer, the physical thickness of the first reflection enhancement layer is greater than or equal to 5 nm.

24. The laminated glass of claim 22, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The reflection enhancement layer farthest from the fourth surface is a second reflection enhancement layer, the physical thickness of the second reflection enhancement layer is greater than or equal to 15 nm.

25. The laminated glass of claim 22, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The reflection enhancement layer further comprises at least one of the group consisting of sub-stoichiometric oxides, nitrides, oxynitrides of the single element or the alloy.

26. The laminated glass of claim 12, wherein The laminated glass further comprises a decorative layer disposed on the fourth surface, the decorative layer is disposed in the shielding area, the reflective element is disposed on the fourth surface, and the decorative layer is disposed around the reflective element.

27. A projection system, characterized by The projection system comprises a projection device and the laminated glass according to any one of claims 1-26, the projection device is used to generate projection light, the projection light comprises at least 80% of P-polarized light, and the projection light is incident on at least one display area in the shielding area at an incident angle of 38°-85°, the display area reflects the projection light to form a display image.

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