A laminated glass

Abstract

The embodiment of the present application provides a laminated glass, which comprises a substrate layer made of a transparent material, a thermotropic layer, an ultraviolet reflection layer and a near and far infrared reflection layer arranged on the substrate layer. The thermotropic layer is used for phase change of the material when the temperature reaches a preset temperature value, and the transmission of light is inhibited; the ultraviolet reflection layer is used for inhibiting the transmission of medium and long wave ultraviolet rays; and the near and far infrared reflection layer is used for inhibiting the transmission of near infrared light and far infrared light. The ultraviolet, part of visible light and near and far infrared energy incident from the outside of the laminated glass have higher reflectivity, so that the high transmittance of the visible light band and the shielding of the external light wave energy to a large extent are realized.

Description

Technical Field

[0001] The present invention relates to the field of glass technology, and more particularly to a laminated glass. Background Technology

[0002] Solar radiation energy is distributed across the entire electromagnetic spectrum, from cosmic rays and X-rays to radio waves. More than 99.9% of the energy is concentrated in the 0.29-10.0 μm band, of which the ultraviolet band (≤0.40 μm), visible light band (0.40 μm-0.76 μm), and infrared band (≥0.76 μm) account for approximately 9%, 44%, and 47% of the total energy, respectively.

[0003] Transportation equipment and buildings are frequently exposed to strong sunlight, and the glass used in these applications typically possesses some heat insulation and energy-saving capabilities. However, considering price and manufacturing costs, current technologies usually reflect infrared heat by coating or depositing a film on a transparent substrate layer, but do not shield against, or only partially shield against, the ultraviolet and visible light bands. Furthermore, considering that shielding against visible light heat might affect the glass's light transmittance, there is an urgent need for a glass technology that can solve the problem of balancing light wave energy shielding with high light transmittance. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a laminated glass to overcome the problem in the prior art that laminated glass cannot simultaneously achieve both light wave energy shielding and high light transmittance.

[0005] This invention provides a laminated glass comprising a substrate layer made of a transparent material, and a thermochromic layer, an ultraviolet reflective layer, and a near- and far-infrared reflective layer disposed on the substrate layer; wherein the thermochromic layer is used to cause a phase change in the material when the temperature reaches a preset temperature value and to suppress the transmission of light; the ultraviolet reflective layer is used to suppress the transmission of medium and long-wave ultraviolet rays; and the near- and far-infrared reflective layer is used to suppress the transmission of near-infrared light and far-infrared light.

[0006] Optionally, in a specific embodiment of the present invention, the near-infrared and far-infrared reflective layer is located in front of the substrate layer along the incident direction of external light.

[0007] Optionally, in a specific embodiment of the present invention, the near-infrared and far-infrared reflective layer is located at the foremost position along the incident direction of the external light.

[0008] Optionally, in a specific embodiment of the present invention, the laminated glass further includes an internal heat shielding layer for reflecting visible light and infrared light; along the incident direction of external light, the internal heat shielding layer is located behind the thermochromic layer, the ultraviolet reflective layer, and the near- and far-infrared reflective layer.

[0009] Optionally, in one specific embodiment of the present invention, the internal heat shielding layer includes a micro-nano sized metal mesh.

[0010] Optionally, in a specific embodiment of the present invention, the thermochromic layer is a vanadium dioxide thin film or coating.

[0011] Optionally, in a specific embodiment of the present invention, the radius of the doped ions in the vanadium dioxide thin film or coating is V 4+ Large, high-valence cations, or, in the vanadium dioxide thin film or coating, the doped ion radius is greater than V. 4+ Small, low-valence cations with no d orbitals in their outer shell.

[0012] Optionally, in a specific embodiment of the present invention, the ultraviolet reflective layer includes a carbon nitride sublayer, a first silicon dioxide sublayer, a first niobium oxide sublayer, a second silicon dioxide sublayer, and a second niobium oxide sublayer stacked sequentially from the outside to the inside.

[0013] Optionally, in a specific embodiment of the present invention, the material of the near-infrared and far-infrared reflective layer includes one or two of aluminum-doped zinc oxide, tin-doped indium oxide, and silver.

[0014] Optionally, in a specific embodiment of the present invention, an anti-reflection layer is further included between the near-infrared and far-infrared reflective layer and the substrate layer, the anti-reflection layer being used to reduce the reflection of visible light.

[0015] As can be seen from the above technical solutions, the laminated glass provided in the embodiments of the present invention can have a high reflectivity for ultraviolet, a portion of visible light, and near- and far-infrared energy incident from the outside of the laminated glass by setting a thermochromic layer, an ultraviolet reflective layer, and a near- and far-infrared reflective layer on the surface of a transparent substrate layer, thereby achieving high transmittance in the visible light band and a large degree of shielding against external light wave energy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the first stacking structure of laminated glass in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of a second stacking structure of laminated glass in an embodiment of this application;

[0019] Figure 3This is a schematic diagram of the third stacking structure of laminated glass in the embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the fourth stacking structure of laminated glass in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the fifth stacking structure of laminated glass in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures: 1. Substrate layer; 11. First transparent substrate sublayer; 12. Second transparent substrate sublayer; 2. Thermochromic layer; 3. Ultraviolet reflective layer; 4. Near-infrared and far-infrared reflective layer; 5. Internal heat shielding layer; 6. Film layer; 7. Hollow layer; A. External light incident direction. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0028] The specific implementation of the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] See Figures 1-5 This application provides a laminated glass comprising a substrate layer 1 made of a transparent material, and a thermochromic layer 2, an ultraviolet reflective layer 3, and a near-infrared and far-infrared reflective layer 4 disposed on the substrate layer 1; wherein, the thermochromic layer 2 is used to cause a phase change in the material when the temperature reaches a preset temperature value and to suppress the transmission of light; the ultraviolet reflective layer 3 is used to suppress the transmission of medium and long-wave ultraviolet rays; and the near-infrared and far-infrared reflective layer 4 is used to suppress the transmission of near-infrared light and far-infrared light.

[0030] In this embodiment, the thermochromic layer 2, the ultraviolet reflective layer 3, and the near- and far-infrared reflective layer 4 can be fabricated on the surface of the substrate layer 1, and the order in which they are arranged on the substrate layer 1 is not limited. They can be reasonably selected according to actual application requirements and production and processing difficulty. That is, all three can be set on one side of the substrate layer 1 individually or in combination on one side of the substrate layer 1.

[0031] For example, see Figure 1 and Figure 2 Along the incident direction A of external light, the ultraviolet reflective layer 3 can be disposed on the second side of the substrate layer 1; the thermochromic layer 2 and the near- and far-infrared reflective layer 4 can be disposed on the first side of the substrate layer 1, and the order of their placement is not limited, that is, the thermochromic layer 2 can be sandwiched between the near- and far-infrared reflective layer 4 and the substrate layer 1, or the near- and far-infrared reflective layer 4 can be sandwiched between the thermochromic layer 2 and the substrate layer 1.

[0032] For example, see Figure 3 Along the incident direction A of external light, the near-infrared and far-infrared reflective layer 4 can be disposed on the first side of the substrate layer 1, the ultraviolet reflective layer 3 and the thermochromic layer 2 can be disposed on the second side of the substrate layer 1, and the thermochromic layer 2 is sandwiched between the ultraviolet reflective layer 3 and the substrate layer 1.

[0033] In this embodiment, the substrate layer 1 is made of a transparent material, which at least ensures that visible light can pass through smoothly. Preferably, the substrate layer 1 is one of the following: sodium-calcium silicate inorganic glass, aluminosilicate inorganic glass, borosilicate inorganic glass, borosilicate plexiglass, polycarbonate, and polyethylene terephthalate.

[0034] The laminated glass can be either insulated or non-insulated, and the substrate layer 1 can include one or more transparent substrate sublayers. For example, Figures 1-3 This illustrates a laminated glass comprising only one substrate layer 1; as shown Figure 4 and Figure 5 The diagram shows a laminated glass comprising two substrate layers 1, wherein the substrate layer 1 includes a first transparent substrate sublayer 11 and a second transparent substrate sublayer 12, and Figure 5 The laminated glass structure in the glass includes the insulated layer 7, which is a type of insulated glass.

[0035] In this embodiment, the thermochromic layer 2 can be a thin film or coating made of a reversible thermochromic material. When the temperature reaches a preset value, the material undergoes a phase change and inhibits light transmission, thereby blocking solar energy. See also Figure 2 and Figure 3 Along the incident direction A of external light, the thermochromic layer 2 can be located in front of or behind the substrate layer 1. When sunlight shines on the thermochromic layer 2, the heat from the sunlight warms the thermochromic layer 2. After reaching a set temperature, the thermochromic layer 2 gradually fogs up to provide a light-blocking function. When the heat from the sunlight decreases, the temperature of the thermochromic layer 2 drops, and it can return to a transparent state. The material used in the thermochromic layer 2 can at least suppress the transmission of near-infrared light, and the phase transition temperature can be adjusted according to the application requirements.

[0036] Optionally, to improve the heat shielding effect, the thermochromic layer 2 is preferably placed on the light-facing side of the substrate layer 1. When sunlight shines on the laminated glass, it must pass through the thermochromic layer 2 before reaching the substrate layer 1. That is, along the external light incident direction A, the thermochromic layer 2 is located in front of the substrate layer 1.

[0037] Optionally, the thermochromic layer 2 is preferably a vanadium dioxide (VO2) thin film or coating. Vanadium dioxide is a transition metal oxide with phase transition properties, capable of undergoing a reversible transition from a high-temperature metallic phase to a low-temperature semiconductor phase at a phase transition temperature of 68°C, accompanied by abrupt changes in resistivity, magnetic susceptibility, and light transmittance. Based on its phase transition properties, the thermochromic layer 2 made using vanadium dioxide can achieve good thermochromic effects. Vanadium dioxide thin films or coatings exhibit high low-temperature transmittance and very low high-temperature transmittance. Through methods such as doping, the phase transition temperature of vanadium dioxide thin films or coatings can be reduced to near room temperature, making them more suitable for use in buildings and transportation equipment.

[0038] Furthermore, in order to lower the phase transition temperature of vanadium dioxide thin films or coatings, the radius of dopable ions in the vanadium dioxide thin films or coatings is greater than that of V. 4+ Large, high-valence cations. For example, preferred doping cations include Nb. 5+ W 6+ Mo6+ wait.

[0039] Furthermore, in order to increase the phase transition temperature of vanadium dioxide thin films or coatings, the radius of dopable ions in the vanadium dioxide thin films or coatings is greater than that of V. 4+ Small, low-valence cations without outer d orbitals. For example, preferred doped cations include Al. 3+ Cr 3+ Ga 3+ wait.

[0040] Furthermore, the vanadium dioxide thin film or coating can be deposited on the outer side of the substrate layer 1 using processes such as magnetron sputtering, spraying, spin coating, and roll coating. Preferably, the thickness of the vanadium dioxide thin film or coating is less than or equal to 121 mm. When the thickness of the vanadium dioxide thin film or coating is 7 μm, the transmittance in the visible light band is less than 70%.

[0041] Furthermore, to obtain a higher visible light transmittance and a lower near-infrared transmittance, the thickness of the vanadium dioxide film or coating is preferably less than or equal to 51 mm. When the thickness of the vanadium dioxide film or coating is 5 μm, the maximum transmittance in the visible light band exceeds 70%, and the transmittance in the near-infrared band is less than 10%.

[0042] In this embodiment, the near-infrared and far-infrared reflective layer 4 is used to suppress the transmission of near-infrared and far-infrared light, thereby achieving the reflection of infrared and far-infrared light. Its constituent materials and processing methods are not limited and can be reasonably selected according to actual application needs and production and processing costs.

[0043] Optionally, to improve the heat shielding effect, the near-infrared and far-infrared reflective layer 4 is preferably disposed on the light-facing side of the substrate layer 1. When sunlight shines on the laminated glass, it must pass through the near-infrared and far-infrared reflective layer 4 before reaching the substrate layer 1. That is, along the incident direction A of the external light, the near-infrared and far-infrared reflective layer 4 is located in front of the substrate layer 1.

[0044] Furthermore, it is preferable that the near-infrared and far-infrared reflective layer 4 is located at the very front of all layers of the laminated glass along the incident direction A of the external light rays, so that when sunlight hits the laminated glass, it will first reach the near-infrared and far-infrared reflective layer 4. Multiple tests have proven that placing the near-infrared and far-infrared reflective layer 4 at the outermost position on the light-facing side of the substrate layer 1 allows for the initial reflection of infrared and far-infrared light, resulting in a significantly better heat shielding effect than placing the near-infrared and far-infrared reflective layer 4 in other positions.

[0045] Optionally, to obtain better near-infrared and far-infrared light reflection effects, the near-infrared and far-infrared reflective layer 4 may be made of one or two of aluminum-doped zinc oxide (AZO), tin-doped indium oxide (ITO), and silver (Ag). The near-infrared and far-infrared reflective layer 4 may be prepared using magnetron sputtering; for a rigid substrate layer 1, a mid-frequency magnetron sputtering deposition method may also be used to prepare the near-infrared and far-infrared reflective layer 4.

[0046] Optionally, to improve the transmittance of visible light, an anti-reflective layer (not shown) is further included between the near-infrared and far-infrared reflective layer 4 and the substrate layer 1. The anti-reflective layer is used to reduce the reflection of visible light. Preferably, the material of the anti-reflective layer includes silicon dioxide or silicon nitride.

[0047] In this embodiment, the ultraviolet reflective layer 3 is used to suppress the transmission of medium and long-wave ultraviolet rays. However, since the energy proportion of the ultraviolet band in sunlight is relatively low, its position setting is more flexible, and the priority of its position setting can be reduced according to the application requirements and processing difficulty of the product. For example, in the design and manufacturing stage, after determining the setting position and processing method of the thermochromic layer 2 and the near-infrared and far-infrared reflective layer 4, the setting position and processing method of the ultraviolet reflective layer 3 can be determined.

[0048] Optionally, to obtain a higher visible light transmittance and a lower ultraviolet transmittance, the ultraviolet reflective layer 3 preferably comprises, from the outside to the inside, a carbon nitride sublayer, a first silicon dioxide sublayer, a first niobium oxide sublayer, a second silicon dioxide sublayer, and a second niobium oxide sublayer. By setting a five-sublayer structure, the ultraviolet reflective layer 3 can achieve an average reflectance of 68% for ultraviolet light in the 200nm-400nm wavelength range, a maximum reflectance of 80% for ultraviolet light in the 380nm-360nm wavelength range, and an average transmittance of greater than or equal to 97% for visible light in the 500nm-650nm wavelength range.

[0049] Optionally, considering that laminated glass may need to reflect heat from inside transportation equipment or buildings during use to reduce internal heat loss, it is preferable that the laminated glass also include an internal heat shielding layer 5 for reflecting visible and infrared light. See also Figure 4 Along the external light incident direction A, the internal heat shielding layer 5 is located behind the thermochromic layer 2, the ultraviolet reflective layer 3, and the near- and far-infrared reflective layer 4, thereby reflecting visible light and infrared light incident from the backlight side of the laminated glass, and playing a certain role in heat preservation.

[0050] The internal heat shield layer 5 can be laminated to the substrate layer 1 using an adhesive material, meaning that a film layer 6 may also be included between the substrate layer 1 and the internal heat shield layer 5. The film layer 6 can be made of at least one of polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), or polyvinyl butyral (PVB). This embodiment does not specifically limit the lamination method of the internal heat shield layer 5; it can be reasonably selected based on actual application requirements and processing difficulty.

[0051] For example, see Figure 4 The internal heat shielding layer 5 can be bonded between the first transparent substrate sublayer 11 and the second transparent substrate sublayer 12 through the film layer 6.

[0052] Furthermore, the internal heat shielding layer 5 includes a micro-nano-sized metal mesh. The fabrication method for the internal heat shielding layer 5 is as follows: First, a patterned template with gaps is formed using laser direct writing; then, the micro-nano-sized pattern on the template is transferred to a transparent organic substrate made of at least one material, such as polyethylene terephthalate (PET), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), or polyvinyl butyral (PVB), using photolithography; next, one or more slurries of conductive metals such as gold, silver, nickel, iron, or copper are filled into the gaps of the transparent organic substrate using pressure rollers; finally, the internal heat shielding layer 5 is formed by sintering and curing, becoming integrated with the transparent substrate.

[0053] In this embodiment, four types of samples were prepared to test the attenuation of light-induced heat. The specific details of each sample are described below:

[0054] Sample number 1 is a sample that only has a transparent substrate layer 1.

[0055] Sample number 2 is a sample in which a near-infrared and far-infrared reflective layer 4 is laminated on the backlight side of the surface of the transparent substrate layer 1. Specifically, the near-infrared and far-infrared reflective layer 4, with silver film as the main material, is deposited on the backlight side of the substrate layer 1 using a magnetron sputtering device.

[0056] Sample number 3 is a sample in which an ultraviolet reflective layer 3 is laminated on the light-facing side of a transparent substrate layer 1, and a near-infrared reflective layer 4 is laminated on the back-facing side. Specifically, a magnetron sputtering device is used to deposit the near-infrared reflective layer 4, which is mainly made of silver film, on the back-facing side of the substrate layer 1, and the ultraviolet reflective layer 3 is deposited on the light-facing side of the substrate layer 1.

[0057] Sample number 4 is a sample in which a UV reflective layer 3 and a thermochromic layer 2 are laminated on the light-facing side of a transparent substrate layer 1, with the thermochromic layer 2 located outside the UV reflective layer 3, and a near-infrared and far-infrared reflective layer 4 is laminated on the back-facing side of the transparent substrate layer 1. Specifically, a near-infrared and far-infrared reflective layer 4, with silver film as the main material, is deposited on the back-facing side of the substrate layer 1 using magnetron sputtering equipment, and a UV reflective layer 3 is deposited on the light-facing side of the substrate layer 1; a 51 μm thick VO2 coating is sprayed onto the outer surface of the UV reflective layer 3 using a spraying method and then cured.

[0058] The test conditions were: peak input energy flux 63 J / cm² 2 The sample opening size was 30mm×30mm, and the irradiation time was 10 seconds.

[0059] The heat value on the light-facing side of the sample is W1, and the heat value on the shaded side is W2. The heat attenuation ratio is calculated as W1 / W2. The larger the heat attenuation ratio, the better the heat shielding effect of the sample.

[0060] Tests confirmed that the heat attenuation ratio was 1 for sample number 1, 3.4 for sample number 2, 3.9 for sample number 3, and 12.7 for sample number 4. This demonstrates that by bonding the thermochromic layer 2, the ultraviolet reflective layer 3, and the near- and far-infrared reflective layer 4 onto the substrate layer 1, thus forming the laminated glass described in this embodiment, the heat shielding effect of the laminated glass can be significantly improved.

[0061] As can be seen from the embodiments of the present invention, the laminated glass of this embodiment, by providing a thermochromic layer 2, an ultraviolet reflective layer 3, and a near- and far-infrared reflective layer 4 on the surface of the transparent substrate layer 1, can have a high reflectivity for ultraviolet light, a portion of visible light, and near- and far-infrared energy incident from the outside of the laminated glass. By providing an internal heat shielding layer 5 including a metal mesh grid of micro- and nano-sized dimensions, it can have a high low emissivity for internal heat sources in the laminated glass, thereby achieving high transmittance in the visible light band and shielding against high-energy heat from both the inside and outside.

[0062] Of course, implementing any technical solution of the embodiments of the present invention does not necessarily require achieving all of the above advantages at the same time.

[0063] It should be noted that, depending on the implementation needs, the various components / steps described in the embodiments of this application can be broken down into more components / steps, or two or more components / steps or parts of the operation of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of this application.

[0064] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A laminated glass, characterized in that, The laminated glass includes a substrate layer made of a transparent material, and a thermochromic layer, an ultraviolet reflective layer, an internal heat shielding layer and a near- and far-infrared reflective layer disposed on the substrate layer. The thermochromic layer is used to induce a phase change in the material when the temperature reaches a preset value and to suppress the transmission of light; the ultraviolet reflective layer is used to suppress the transmission of medium and long-wave ultraviolet light; the near-infrared and far-infrared reflective layer is used to suppress the transmission of near-infrared and far-infrared light; the internal heat shielding layer is used to reflect visible light and infrared light; along the external light incident direction, the internal heat shielding layer is located behind the thermochromic layer, the ultraviolet reflective layer, and the near-infrared and far-infrared reflective layer.

2. The laminated glass according to claim 1, characterized in that, Along the direction of external light incidence, the near-infrared and far-infrared reflective layer is located in front of the substrate layer.

3. The laminated glass according to claim 2, characterized in that, Along the direction of external light incidence, the near-infrared and far-infrared reflective layer is located at the foremost position.

4. The laminated glass according to claim 1, characterized in that, The internal heat shield layer comprises a micro-nano sized metal mesh.

5. The laminated glass according to claim 1, characterized in that, The thermochromic layer is a vanadium dioxide coating.

6. The laminated glass according to claim 5, characterized in that, The thermochromic layer is a vanadium dioxide thin film.

7. The laminated glass according to claim 5, characterized in that, The vanadium dioxide coating has a doped ion radius ratio V 4+ Large, high-valence cations, or, in the vanadium dioxide coating, doped ions with radii greater than V. 4+ Small, low-valence cations with no d orbitals in their outer shell.

8. The laminated glass according to claim 1, characterized in that, The ultraviolet reflective layer comprises, from the outside to the inside, a carbon nitride sublayer, a first silicon dioxide sublayer, a first niobium oxide sublayer, a second silicon dioxide sublayer, and a second niobium oxide sublayer stacked sequentially.

9. The laminated glass according to claim 1, characterized in that, The material of the near-infrared and far-infrared reflective layer includes one or two of aluminum-doped zinc oxide, tin-doped indium oxide, and silver.

10. The laminated glass according to claim 1, characterized in that, An anti-reflection layer is also included between the near-infrared and far-infrared reflective layer and the substrate layer, the anti-reflection layer being used to reduce the reflection of visible light.

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