TW201831419A - Wavelength-selectively permeable laminated glass - Google Patents

Abstract

Provided is a wavelength-selectively permeable laminated glass which permits the permeation of light that is in a specific wavelength range and has an effect to prevent myopia and which has a low transmittance of ultraviolet ray having a shorter wavelength than the specific wavelength range. Provided is a wavelength-selectively permeable laminated glass equipped with a light direction changing sheet which can change the direction of at least a portion of light that travels from the outside of a room toward the inside of the room to allow the permeation of the portion of the light, a first glass plate which is arranged outside of the room relative to the light direction changing sheet, a first adhesive layer which can bond the light direction changing sheet to the first glass plate, a second glass plate which is arranged inside of the room relative to the light direction changing sheet, and a second adhesive layer which can bond the light direction changing sheet to the second glass plate, wherein the transmittance T longer than 315 nm and equal to or shorter than 400 nm of light having a wavelength of longer than 315 nm and equal to or shorter than 400 nm is 3% or more and the transmittance T equal to or shorter than 315 nm of light having a wavelength of equal to or shorter than 315 nm is 60% or less.

Description

Wavelength selective permeable laminated glass

The present invention relates to a wavelength selective permeable laminated glass that transmits light in a specific wavelength region.

As the window glass, a laminated glass or a laminated glass including a light direction conversion sheet is known (for example, see Patent Document 1). The light direction conversion sheet directionalally converts and transmits at least a portion of the light from the outside toward the room. For example, the light direction conversion sheet converts the direction of light, for example, from the obliquely downward direction to the obliquely upward direction. Outdoor light such as sunlight can be introduced into the depths of the room, which can improve the brightness of the room. On the other hand, the usual window glass allows ultraviolet rays to pass through to some extent. Therefore, it is known that in a room where direct sunlight is incident, it is gradually burned. Therefore, in particular, a window containing an ultraviolet-absorbing ion-containing ultraviolet absorbing glass or a film containing an ultraviolet absorbing agent is used for a window such as a sun-illuminated automobile. Patent Document 2 discloses a glass plate with an ultraviolet shielding layer in which an ultraviolet shielding layer is provided on a glass having a transmittance of light having a wavelength of 400 nm and a transmittance of light having a wavelength of 400 nm is set to 3%. the following. Short-wavelength light is considered to be harmful to the skin due to sunburn, inflammation of the eyes, deterioration of polymer materials, etc., but light of a specific wavelength region is also considered to be effective for suppressing the progression of myopia. However, the prior ultraviolet absorbing glass was designed to absorb the entirety of short-wavelength light (for example, below 400 nm). [Prior Art Document] [Patent Document] Patent Document 1: Japanese Patent Laid-Open Publication No. 2009-280464. Patent Document 2: Japanese Patent Laid-Open No. 2009-184882

[Problem to be Solved by the Invention] An object of the present invention is to provide a wavelength selective transmission laminated glass which transmits light having a specific wavelength region which suppresses the progress of myopia, and transmits light having a shorter wavelength than the specific wavelength region. The rate is low, and it is possible to extract light of a specific wavelength region to not only the window side but also the entire room. Hereinafter, in the case where there is no particular specification in the present specification, the light in a specific wavelength region means light having a wavelength region of 360 to 400 nm. [Means for Solving the Problems] In order to achieve the above object, the present invention provides a wavelength selective transmission laminated glass comprising: a light direction conversion sheet that converts at least a part of light from the outside toward the room and causes it to be converted The first glass plate is disposed on the outdoor side with respect to the light direction conversion sheet; the first adhesive layer is followed by the light direction conversion sheet and the first glass plate; and the second glass plate is The light direction conversion sheet is disposed on the indoor side with reference to the light direction conversion sheet; and the second adhesive layer is followed by the light direction conversion sheet and the second glass sheet; and the wavelength represented by the following formula exceeds 315 nm and 400 nm or less of a light transmittance T _{exceeds 315 nm and 400 nm or less} is 3% or more, represented by the following formula a wavelength of 315 nm or less _{315 nm or less} light transmittance T of 60% or less. [Number 1] [Number 2] [In the above formula, A _k is used to calculate the weighting coefficient at the wavelength k (nm) of T (light transmittance) specified in ISO-9050:2003, and T _k is the transmittance at the wavelength k (nm)] The wavelength selective transmission laminated glass of the present invention preferably has a light transmittance T _{360-400 nm} of 3% or more at a wavelength of 360 to 400 nm represented by the following formula. [Number 3] (A _k and T _k in the above formula are the same as described above) The wavelength selective transmission laminated glass of the present invention preferably has a light transmittance of 400 to 760 nm represented by the following formula: T _{400-760 nm} is 1%. the above. [Number 4] (In the above formula, A' _k is used to calculate the weighting coefficient at the wavelength k (nm) of the light transmittance (D65 light source) Tv_D65 prescribed in ISO-9050:2003, and T _k is the same as above) The wavelength of the present invention The transmittance of the permeable laminated glass is preferably 40% or more for light having a wavelength of 380 nm, the transmittance of light having a wavelength of 350 nm is 30% or less, and the transmittance of light having a wavelength of 315 nm is 10% or less. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that at least one of the first glass plate and the second glass plate has a light transmittance T _{exceeding 315 nm} and a wavelength of 400 nm or less. _{In the case of 400 nm or} less, the transmittance is 3% or more in terms of a plate thickness of 6 mm, and the transmittance of T _{315 nm or less} at a wavelength of 315 nm or less is 60% or _less in terms of a plate thickness of 6 mm. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the light transmittance T _{360-400 nm} of the wavelength selective permeable glass is 3% or more in terms of a sheet thickness of 6 mm. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the light transmittance T _{400-760 nm} of the wavelength selective permeable glass is 1% or more in terms of a sheet thickness of 6 mm. In the wavelength-selective permeable laminated glass of the present invention, it is preferred that the wavelength-selective permeable glass has a total iron content represented by Fe ₂ O ₃ of 0.001 to 10% by mass, and the redox ratio of iron (Fe-Redox) The value of 5) is 5 to 80%. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the wavelength selective permeable glass contains a material selected from the group consisting of Au, Ag, Sn, rare earth elements (except La, Y), Ti, W, Mn, As, Sb. At least one element of the group of U is 0.1 ppm by mass or more and 5% by mass or less in terms of total amount of oxides. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the wavelength-selective permeable glass contains at least one element selected from the group consisting of Ce, Sn, and Ti in an oxide-based total of 0.1 mass. Ppm or more and 5% by mass or less. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the wavelength selective permeable glass contains a material selected from the group consisting of Au, Ag, Sn, rare earth elements (excluding La and Y), W, Mn, As, Sb, and U. At least one element of the group is 0.1 ppm by mass or more and 5% by mass or less based on the total amount of the oxide. The present invention to a wavelength selective permeability of the laminated glass, preferably glass permselectivity of oxides by mass% expressed as a glass matrix composition, as the wavelength of SiO _{2: 60 ~ 80%, Al 2} O 3: 0 to 7%, MgO: 0 to 10%, CaO: 4 to 20%, Na ₂ O: 7 to 20%, and K ₂ O: 0 to 10%. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the wavelength-selective permeable glass is expressed by mass% based on oxides, and contains SiO ₂ : 45 to 80% and Al ₂ O ₃ as a glass matrix composition: More than 7% and 30% or less, B ₂ O ₃ : 0 to 15%, MgO: 0 to 15%, CaO: 0 to 6%, Na ₂ O: 7 to 20%, K ₂ O: 0 to 10%, ZrO ₂ : 0 to 10%. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the wavelength-selective permeable glass is expressed by mass% based on oxides, and contains SiO ₂ : 45 to 70% and Al ₂ O ₃ as a glass matrix composition: 10 to 30%, B ₂ O ₃ : 0 to 15%, at least one selected from the group consisting of MgO, CaO, SrO, and BaO: 5 to 30%, selected from Li ₂ O, Na ₂ O, and K At least one of the groups consisting of ₂ O: 0% or more and 7% or less. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that at least one of the first glass plate and the second glass plate is a glass article including a glass plate and a film provided on a main surface of the glass plate, Further, the transmissive glass article is selected such that the light transmittance T _{exceeds 315 nm and 400 nm or less} is 3% or more, and the light transmittance T _{315 nm or less} is 60% or less. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the transmittance of light having a wavelength of 380 nm of the wavelength-selective transparent glass article is 70% or more, preferably 80% or more, and light having a wavelength of 350 nm. The transmittance is 40% or less, preferably 30% or less, and the transmittance of light having a wavelength of 315 nm is 10% or less. Further, in the wavelength selective permeable laminated glass of the present invention, it is preferable that at least one of the glass plate and the film of the wavelength selective permeable glass article contains a component that emits light having a wavelength of 380 nm. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the transmittance of light having a wavelength of 360 nm of the glass plate of the wavelength selective permeable glass article is 50% or more. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the film of the wavelength selective permeable glass article contains a component that absorbs light having a wavelength of less than 360 nm. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the film of the wavelength selective permeable glass article contains a component that reflects light having a wavelength of less than 360 nm. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that at least one of the first adhesive layer and the second adhesive layer has a light transmittance T of _{more than 315 nm and 400 nm or less} of 3% or more. and 60% of the wavelength selective permeability of the transparent glass article of T _{315 nm or less.} In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the transmittance of light having a wavelength of 380 nm of the wavelength-selective transparent glass article is 70% or more, preferably 80% or more, and light having a wavelength of 350 nm. The transmittance is 40% or less, preferably 30% or less, and the transmittance of light having a wavelength of 315 nm is 10% or less. In the wavelength selective permeable laminated glass of the present invention, it is preferable that at least one of the first adhesive layer and the second adhesive layer of the wavelength selective permeable glass article contains a component that emits light having a wavelength of 380 nm. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that a transmittance of light having a wavelength of 360 nm of at least one of the first subsequent layer and the second subsequent layer of the wavelength-selective transparent glass article is 50. %the above. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that at least one of the first adhesive layer and the second adhesive layer of the wavelength selective permeable glass article contains a component that absorbs light having a wavelength of less than 360 nm. . In the wavelength selective permeable laminated glass of the present invention, preferably, at least one of the first adhesive layer and the second adhesive layer of the wavelength selective permeable glass article contains a component that reflects light having a wavelength of less than 360 nm. . In the wavelength-selective permeable laminated glass of the present invention, it is preferred that the surface of the inside of the second glass sheet has a light-scattering surface. In the wavelength-selective permeable laminated glass of the present invention, it is preferable that the second glass plate is embossed glass, frosted glass or a glass with a light-scattering film. In the wavelength selective permeable laminated glass of the present invention, it is preferable that the light direction conversion sheet has a concavo-convex structure, and the concave portion of the uneven structure is filled with a filler. Moreover, the present invention provides a building in which any one of the above-described wavelength selective permeable laminated glass is provided as a window member at an opening formed in a wall. [Effects of the Invention] According to the present invention, a wavelength selective transmission laminated glass is obtained which can transmit light of a specific wavelength region but hardly transmits light having a shorter wavelength than the specific wavelength region, and can emit light of a specific wavelength region. It is taken into the window side and the entire room.

In this specification, the "transmittance of light at a wavelength of 380 nm" is the transmittance at this wavelength, "transmittance T_{exceed 315 nm And 400 nm the following} "Transmittance T_{400-760 nm} "" refers to the transmittance after adding the weighting factor per wavelength specified in ISO-9050:2003. Further, the "specific wavelength light absorbing component" means a component that absorbs light having a wavelength of less than 360 nm, and the "specific wavelength light reflecting component" refers to a component that reflects light having a wavelength of less than 360 nm. Hereinafter, the wavelength selective transmission laminated glass of the present invention will be described with reference to the drawings. Fig. 1 is a cross-sectional view showing an example of a configuration of a wavelength selective transmission laminated glass. In Fig. 1, the left side is the outdoor side, and the right side is the indoor side. The wavelength-selective permeable laminated glass (hereinafter, simply referred to as "laminated glass" in the present specification) 10 shown in Fig. 1 is attached to an opening such as a window or a building material for interior, and allows outdoor light such as sunlight to pass through to the outside. indoor. The window may be, for example, a window of a building, a window of a vehicle, or the like. The laminated glass 10 shown in Fig. 1 allows outdoor light such as sunlight to pass through the room. The laminated glass 10 has the first glass plate 11 , the first subsequent layer 12 , the light direction conversion sheet 13 , the second adhesive layer 14 , and the second glass plate 15 in this order from the outdoor side toward the indoor side. The first glass sheet 11 is disposed on the outdoor side with reference to the light direction conversion sheet 13 . The first glass plate 11 is an unreinforced glass, a chemically strengthened glass, or a heat strengthened glass. The unreinforced glass system is obtained by forming molten glass into a plate shape and gradually cooling it. Examples of the molding method include a float method, a melting method, and the like. The chemically strengthened glass is obtained by strengthening the surface of the glass by causing a compressive stress on the surface of the glass by an ion exchange method or the like. The heat-strengthened glass is obtained by quenching the uniformly heated glass sheet from a temperature near the softening point, and compressing the surface of the glass by generating a compressive stress on the surface of the glass by a temperature difference between the surface of the glass and the inside of the glass. Hereinafter, the first glass sheet 11 may be composed of the wavelength selective transmission glass of the present invention or the wavelength selective transmission glass article of the present invention. The first adhesive layer 13 is followed by the light direction conversion sheet 13 and the first glass sheet 11. The first adhesive layer 12 is made of a thermoplastic resin, a thermosetting resin, or an ultraviolet curable resin. The first adhesive layer 12 preferably contains at least one selected from the group consisting of a vinyl polymer, an ethylene-vinyl monomer copolymer, a styrene copolymer, a polyurethane resin, a fluororesin, and an acrylic resin. . As the thermoplastic resin, polyvinyl butyral resin (PVB) is typical. As the thermosetting resin, ethylene-vinyl acetate copolymer resin (EVA) is typical. When the first adhesive layer 12 is made of a thermoplastic resin or a thermosetting resin, it is followed by heat treatment. Moreover, when the first adhesive layer 12 is made of an ultraviolet curable resin, it is followed by ultraviolet irradiation. The first adhesive layer 12 may also contain an ultraviolet absorber. As the ultraviolet absorber, a general one can be used, and for example, a benzotriazole type, a benzophenone type, a salicylate type, a cyanoacrylate type, a triterpenoid system, a grassy anilide type, and a nickel misalignment can be used. Salt, inorganic, etc. As the inorganic system, for example, particles such as zinc oxide, titanium oxide, cerium oxide, zirconium oxide, mica, kaolin, or sericite can be used. Similarly to the first adhesive layer 12, the second adhesive layer 14 may contain an ultraviolet absorber. The material of the second adhesive layer 14 and the material of the first adhesive layer 12 can be realized, and the management cost or the manufacturing cost can be reduced. The light direction conversion sheet 13 converts and transmits at least a part of the light that is directed from the outside toward the room. Since the light direction conversion sheet 13 is converted from the obliquely downward direction to the obliquely upward direction, for example, outdoor light such as sunlight can be introduced into the depth of the room, and the brightness of the room can be improved. The light direction conversion sheet 13 shown in Fig. 1 converts the direction of the vertical direction of light from the downward direction to the upper direction. However, the direction of the horizontal direction of light can be converted according to the indoor structure or the like. The light direction conversion sheet 13 converts and transmits at least a part of the light that is directed from the outside toward the room. The light direction conversion sheet 13 may be a normal one, for example, a transparent sheet in which a plurality of 稜鏡 structures (concave and convex structures) are formed on the surface, or a transparent sheet in which a concave groove is formed in the sheet. The light direction conversion sheet 13 has a light direction conversion surface having a concavo-convex structure and is converted in the light direction on the light direction conversion surface. The light direction conversion sheet 13 is disposed between the first glass sheet 11 and the second glass sheet 15 and disposed inside the laminated glass 10. Therefore, the damage of the light direction conversion sheet 13 can be prevented, and the penetration resistance of the laminated glass 10 can be improved, and the antitheft effect can be improved. The filler may also be filled in the concave portion of the uneven structure. The refractive index of the filler is different from the refractive index of the transparent sheet. When the refractive index difference is larger on both sides of the light direction conversion surface, total reflection is more likely to occur at the light direction conversion surface. The filler is selected in such a manner that total reflection is easily generated. That is, the filler is selected such that the refractive index difference is increased as compared with the case where the filler is not filled by filling the filler with the concave portion. Further, the flat portion of the light direction conversion sheet 13 can be realized by filling the filler with the concave portion of the uneven structure of the light direction conversion sheet 13. The second adhesive layer 14 is followed by the light direction conversion sheet 13 and the second glass sheet 15. Similarly to the first adhesive layer 12, the second adhesive layer 14 is made of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, or the like. The second glass sheet 15 is disposed on the indoor side with reference to the light direction conversion sheet 13 . Similarly to the first glass plate 11, the second glass plate 15 is an unreinforced glass, a chemically strengthened glass, or a heat strengthened glass. Hereinafter, the second glass sheet 15 may be composed of the wavelength selective transmission glass of the present invention or the wavelength selective transmission glass article of the present invention. The second glass sheet 15 may be embossed glass, frosted glass, or the like, and may have an uneven surface. In this case, the second glass sheet 15 can be an unreinforced glass excellent in workability. The embossed glass is attached to the surface of the glass plate to which the mold of the roll is transferred. The frosted glass is obtained by subjecting the surface of the glass plate to sandblasting and then chemically treating it. The surface on the indoor side of the second glass sheet 15 is an uneven surface, and the uneven surface can form a light-scattering surface. By making the refractive index different on the left and right sides of the uneven surface, the light is scattered when passing through the uneven surface, and the glare caused by the uneven structure of the light direction changing sheet 13 can be alleviated. The light-scattering surface may be obtained by forming a film containing light-scattering fine particles on the surface of the indoor side of the second glass sheet 15. As the shape of the light-scattering fine particles, spherical particles, rod-shaped particles, scaly particles, acicular particles, or the like can be used. Among them, spherical particles and scaly particles have a high effect of relaxing glare, and thus it is preferable. . In addition, as the light-scattering fine particles, cerium oxide, titanium oxide, aluminum oxide, zirconia or the like can be used, and from the viewpoint of suppressing an increase in the refractive index of the film, cerium oxide is preferable. Further, the particle diameter of the light-scattering fine particles is preferably from 0.3 to 2 μm, more preferably from 0.5 to 1.5 μm. When the particle diameter is 0.3 μm or more, the light scattering effect is sufficiently exhibited. When the particle diameter is 2 μm or less, the dispersion stability in the coating liquid becomes good. By setting such a particle diameter, optimum light scattering is obtained, and glare caused by the uneven structure of the light direction conversion sheet 13 can be alleviated. The particle size of the light-scattering fine particles is measured by a laser diffraction/scattering method. An example of the measuring device is a laser diffraction/scattering particle size distribution measuring device (manufactured by Horiba, Ltd., trade name: LA-950). When the scaly particles or the like cannot be smoothly measured by the above method, the measurement is carried out by image analysis using a scanning electron microscope (SEM) or a transmission electron microscope (TEM). When the content of the light-scattering fine particles is 100% by mass, the light scattering effect can be sufficiently exhibited in an amount of 0.3 to 30% by mass. Further, in terms of abrasion resistance, it is preferably from 0.5 to 5% by mass. The film thickness of the film containing the light-scattering fine particles can be suitably produced in the range of 0.3 μm to 10 μm. When the film thickness is thin, it is economical, and when the film thickness is thick, the wavelength selective permeability can be imparted by adding an ultraviolet absorber. Further, the uneven surface as the light-scattering surface may be disposed on the outdoor side with respect to the light-direction conversion sheet 13 as a reference. The incident light incident on the light direction conversion sheet 13 can be scattered, and the glare caused by the uneven structure of the light direction conversion sheet 13 can be alleviated. In this case, the first glass sheet 11 may be embossed glass, frosted glass or the like, and the surface on the outdoor side of the first glass sheet 11 may be an uneven surface, and the uneven surface may form a light-scattering surface. The laminated glass 10 shown in Fig. 1 has two glass plates, and may have three or more sheets. For example, the laminated glass may have a third glass plate which is adjacent to the first glass plate 11 on the outdoor side of the first glass plate 11. Further, the laminated glass 10 may have a fourth glass plate which is adjacent to the second glass plate on the inner side of the second glass plate 15. In this case, the third glass plate and/or the fourth glass plate may be composed of the wavelength selective transmission glass of the present invention or the wavelength selective transmission glass article of the present invention. The laminated glass of the present invention has a light transmittance T of more than 315 nm and less than 400 nm represented by the following formula_{exceed 315 nm And 400 nm the following} It is 3% or more. [Number 5]In the above formula, A_k Used to calculate the weighting factor at the wavelength k (nm) of T (transmittance) specified in ISO-9050:2003, and T_k Transmittance at a wavelength of k (nm) Therefore, the above formula is only used in a wavelength range of more than 315 nm and 400 nm in weighting coefficients for calculating T (transmittance) specified in ISO-9050:2003. Weighting factor, using the weighting factor in this wavelength range (A_k ) and transmittance (T_k The sum of the products of the products divided by the sum of the weighting coefficients in the wavelength range, and is the average of the weighted transmittances. Furthermore, A in ISO-9050:2003_k Since the wavelength k is specified every 5 nm, the k in the above formula is more than 315 nm._k In the present invention, as A at k=320 nm_k Process it. The laminated glass of the present invention has a light transmittance T_{exceed 315 nm And 400 nm the following} It is 3% or more, and is expected to suppress the effect of myopia progression. The laminated glass of the present invention preferably has a light transmittance T_{exceed 315 nm And 400 nm the following} It is 5% or more, more preferably 10% or more, further preferably 20% or more, further preferably 30% or more, and particularly preferably 40% or more. Moreover, the transmittance T of the laminated glass of the present invention_{exceed 315 nm And 400 nm the following} It can also be 100%. The light transmittance T of the wavelength 315 nm or less represented by the following formula of the laminated glass of the present invention_{315 nm the following} It is 60% or less. [Number 6]In the above formula, A_k And T_k Same as above. Therefore, the above equation is based on the weighting coefficient used to calculate the T (light transmittance) specified in ISO-9050:2003, and only the weighting coefficient of the wavelength range of 300 to 315 nm is used, and the weighting coefficient in the wavelength range is used (A)_k ) and transmittance (T_k The sum of the products of the products divided by the sum of the weighting coefficients in the wavelength range, and is the average of the weighted transmittances. Furthermore, the reason for using only the weighting coefficients of the wavelength range of 300 to 315 nm is that the weighting factor specified in ISO-9050:2003 (A)_k The value of ) is set to 0 when the wavelength is less than 300 nm. The laminated glass of the present invention has a light transmittance T_{315 nm the following} When it is 60% or less, various damages to the eyes caused by light in the wavelength region can be suppressed. The laminated glass of the present invention preferably has a light transmittance T_{315 nm the following} It is 45% or less, more preferably 30% or less, further preferably 15% or less, more preferably 5% or less, still more preferably 1% or less, and most preferably 0.8% or less. Moreover, the transmittance T of the laminated glass of the present invention_{315 nm the following} Can also be 0%. The laminated glass of the present invention preferably has a light transmittance T of a wavelength of 360 to 400 nm represented by the following formula._{360-400 nm} It is 3% or more. [Number 7]In the above formula, A_k And T_k Same as above. Therefore, the above equation is based on the weighting coefficient used to calculate the T (light transmittance) specified in ISO-9050:2003, and only the weighting coefficient of the wavelength range of 360 to 400 nm is used, and the weighting coefficient in the wavelength range is used (A)_k ) and transmittance (T_k The sum of the products of the products divided by the sum of the weighting coefficients in the wavelength range, and is the average of the weighted transmittances. In the laminated glass of the present invention, if the light transmittance T_{360-400 nm} When it is 3% or more, the effect of suppressing the progression of myopia is particularly expected. The laminated glass of the present invention preferably has a light transmittance T_{360-400 nm} It is 5% or more, more preferably 10% or more, more preferably 20% or more, more preferably 30% or more, still more preferably 40% or more, more preferably 60% or more, and particularly preferably 80% or more. Moreover, the transmittance T of the laminated glass of the present invention_{360-400 nm} It can also be 100%. In the laminated glass of the present invention, the transmittance of light other than the specific wavelength region is not particularly limited, and may be appropriately selected depending on the application. The laminated glass of the present invention preferably has a light transmittance T of a wavelength of 400 to 760 nm represented by the following formula._{400-760 nm} It is 1% or more in terms of a plate thickness of 6 mm. [Number 8]In the above formula, T_k Same as above. A'_k Used to calculate the light transmittance T specified in ISO-9050:2003_{400-760 nm} (D65 light source) The weighting factor at the wavelength k (nm) of Tv_D65. Therefore, the above formula is used to calculate the transmittance T specified in ISO-9050:2003._{400-760 nm} (D65 light source) In the weighting coefficient of Tv_D65, only the weighting coefficient of the wavelength range of 400 to 760 nm is used, and the weighting coefficient in the wavelength range is used (A_k ) and transmittance (T_k The sum of the products of the products divided by the sum of the weighting coefficients in the wavelength range, and is the average of the weighted transmittances. The laminated glass of the present invention has a light transmittance T_{400-760 nm} When the content is 1% or more, the visibility of the back surface of the glass is easily obtained. Therefore, compared with the resin, the metal, and the wall material, it is easy to recognize the gloss and texture which are characteristic of the glass, and the design is improved. Light transmittance T_{400-760 nm} A more preferable range differs depending on the use of the laminated glass of the present invention, but when it is required to transmit light of 400 to 760 nm, the light transmittance T_{400-760 nm} More preferably, it is 10% or more, more preferably 20% or more, more preferably 40% or more, more preferably 60% or more, more preferably 80% or more, and particularly preferably 90% or more. Moreover, the transmittance T of the laminated glass of the present invention_{400-760 nm} It can also be 100%. The laminated glass of the present invention preferably has a transmittance of light of a wavelength of 380 nm of 40% or more. Such laminated glass sufficiently transmits light having a high effect of suppressing myopia progression. The transmittance of light having a wavelength of 380 nm is more preferably 50% or more. Further, the transmittance of light having a wavelength of 380 nm of the laminated glass of the present invention may be 100%. The transmittance of light having a wavelength of 350 nm of the laminated glass of the present invention is preferably 30% or less, more preferably 20% or less, and still more preferably 10% or less. Since such a laminated glass can reduce the intensity of light having a wavelength of 350 nm or less, when the laminated glass of the present invention is used for a window glass of a building or an automobile, it is possible to suppress sunburn caused by light in the wavelength region. Further, the transmittance of light having a wavelength of 350 nm of the laminated glass of the present invention may be 0%. The transmittance of light having a wavelength of 315 nm of the laminated glass of the present invention is preferably 10% or less, more preferably 5% or less, and still more preferably 1% or less. Since such a laminated glass hardly transmits light of 315 nm or less, if the glass article is used for a window glass of a building or an automobile, it is possible to prevent severe sunburn caused by light in the wavelength region. Further, the transmittance of light having a wavelength of 315 nm of the laminated glass of the present invention may be 0%. The color tone of the laminated glass of the present invention can be appropriately selected depending on the use thereof. In the present invention, as an index of the color tone of the glass, the dominant wavelength Dw measured using the A light source is used. In the laminated glass of the present invention, the main wavelength Dw measured by the A light source is 380 to 700 nm, and it is preferable because it contains glass of various colors depending on the application. For example, a glass having a dominant wavelength Dw of 380 to 480 nm is a purple glass, a glass having a dominant wavelength Dw of 460 to 510 nm is a blue glass, and a glass having a dominant wavelength Dw of 500 to 570 nm is a green glass, and a dominant wavelength. The glass having a Dw of 580 to 700 nm is a red glass. Suitable embodiments of the laminated glass of the present invention are disclosed below. The first preferred embodiment of the laminated glass of the present invention (hereinafter, referred to as the laminated glass (1) of the present invention in the present specification) is a wavelength-selective transparent glass (hereinafter, referred to as "wavelength selection" in the present specification. The transmissive glass") is a light transmittance T of the above definition of at least one of the first glass plate and the second glass plate_{exceed 315 nm And 400 nm the following} 3% or more in terms of plate thickness of 6 mm, and the light transmittance T defined above_{315 nm the following} It is 60% or less in terms of a plate thickness of 6 mm. In the laminated glass (1) of the present invention, at least one of the first glass plate and the second glass plate may be a wavelength selective transmission glass, or both of them may be wavelength selective transmission glasses. When either of the transparent glasses is selected as the wavelength, it is preferable to use the first glass plate as the wavelength selective transmission glass for the following reason. If the first glass plate on the outdoor side is set to light transmittance T_{315 nm the following} When the transparent glass is selected to have a wavelength of 60% or less in terms of a plate thickness of 6 mm, it is possible to suppress light deterioration of the first adhesive layer, the light direction conversion sheet, and the second adhesive layer which are located on the indoor side with respect to the first glass plate. . Further, since the second glass sheet has a surface on the indoor side as an uneven surface as in the illustrated form, it is preferable to set the first glass sheet to a wavelength from the viewpoint of manufacturing the glass sheet. Selective glass. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably has a light transmittance T_{exceed 315 nm And 400 nm the following} The conversion is 5% or more, more preferably 10% or more, further preferably 20% or more, further preferably 30% or more, and particularly preferably 40% or more in terms of a plate thickness of 6 mm. Moreover, the wavelength selects the transmittance T of the transparent glass_{exceed 315 nm And 400 nm the following} It can also be 100% in terms of plate thickness of 6 mm. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably has a light transmittance T_{315 nm the following} The conversion is 45% or less, more preferably 30% or less, further preferably 15% or less, more preferably 5% or less, still more preferably 1% or less, and most preferably 0.8% or less in terms of a plate thickness of 6 mm. Moreover, the wavelength selects the transmittance T of the transparent glass_{315 nm the following} It can also be 0% in terms of plate thickness of 6 mm. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably has a light transmittance T_{360-400 nm} In the case of a plate thickness of 6 mm, it is 3% or more, more preferably 10% or more, more preferably 20% or more, more preferably 30% or more, more preferably 40% or more, more preferably 60% or more, and particularly preferably More than 80%. Moreover, the wavelength selects the transmittance T of the transparent glass_{360-400 nm} It can also be 100% in terms of plate thickness of 6 mm. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably has a light transmittance T_{400-760 nm} In the case of a plate thickness of 6 mm, it is 1% or more, more preferably 10% or more, more preferably 20% or more, more preferably 40% or more, more preferably 60% or more, more preferably 80% or more, and particularly preferably more than 90 percent. Moreover, the wavelength selects the transmittance T of the transparent glass_{400-760 nm} It can also be 100% in terms of plate thickness of 6 mm. In the laminated glass (1) of the present invention, the wavelength-selective transparent glass preferably has a dominant wavelength Dw measured by an A light source of 380 to 700 nm in terms of a sheet thickness of 6 mm. In the laminated glass (1) of the present invention, the iron content of the glass and the ferrous iron (Fe in the iron contained in the glass)²⁺ And ferric iron (Fe)³⁺ Ratio of light transmittance to wavelength selective transmissive glass_{exceed 315 nm And 400 nm the following} And light transmittance T_{315 nm the following} Have an impact. That is, the iron content of the glass versus the transmittance T_{exceed 315 nm And 400 nm the following} And light transmittance T_{315 nm the following} Have an impact. On the other hand, ferrous iron (Fe) in iron contained in glass²⁺ And ferric iron (Fe)³⁺ Ratio of light transmittance T_{315 nm the following} Have an impact. In the present specification, as a ferrous iron (Fe in iron) contained in glass²⁺ And ferric iron (Fe)³⁺ The index of the ratio, using the redox rate of iron. Iron redox rate is Fe₂ O₃ Converted Fe²⁺ Content relative to Fe₂ O₃ The ratio of the total iron content converted. In the laminated glass (1) of the present invention, the wavelength selective transmission glass is preferably Fe.₂ O₃ The total iron content is 0.001 to 10% by mass, and the value of the redox ratio of iron is 5 to 80%. By making Fe₂ O₃ The total iron content is 0.001% by mass or more, and the glass meltability and defoaming property in the case of using a large kiln are improved. It is more preferably 0.01% by mass or more, further preferably 0.03% by mass or more, still more preferably 0.04% by mass or more, and most preferably 0.05% by mass or more. On the other hand, by making Fe₂ O₃ The total iron content is 10% by mass or less, and there is an effect that light in the near-ultraviolet wavelength region is easily transmitted. In addition, since the visibility of the back surface of the glass is easily obtained, it is easy to recognize the gloss and texture which are characteristic of the glass, and improve the design property, compared with the resin, the metal, and the wall material. It is more preferably 7% by mass or less, further preferably 5% by mass or less, and most preferably 2% by mass or less. Further, it is preferably 0.5% by mass or less, more preferably 0.3% by mass or less, and still more preferably 0.15% by mass or less, based on the mass% of the oxide. When the redox ratio of iron is 5% or more, the defoaming property in the case of using a large kiln is improved, and the heat insulating property of the glass is improved. More preferably, it is 7% or more, more preferably 10% or more, more preferably 15% or more, more preferably 25% or more, more preferably 35% or more, and most preferably 40% or more. On the other hand, when the redox ratio of iron is 80% or less, light having a wavelength exceeding 315 nm and 400 nm or less can be easily transmitted, and the melting property of the glass raw material in the production of a large kiln can be improved, and the use in melting can be reduced. fuel. More preferably, it is 75% or less, more preferably 70% or less, more preferably 65% or less, and most preferably 60% or less. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably contains a trace component having a function of absorbing light having a wavelength of 315 nm or less. Specific examples of the trace component having a function of absorbing light having a wavelength of 315 nm or less include Au, Ag, Sn, rare earth elements (excluding La and Y), Ti, W, Mn, As, Sb, and U. The wavelength selective transmission glass of the present invention preferably contains at least one selected from the group consisting of Au, Ag, Sn, rare earth elements (except La, Y), Ti, W, Mn, As, Sb, and U. The element is 0.1 ppm by mass or more and 5% by mass or less based on the total amount of the oxide. By containing 0.1 ppm by mass or more of the above components in a total amount, the effect of absorbing light having a wavelength of 315 nm or less is exhibited. More preferably, it is contained in an amount of 1 ppm by mass or more, and more preferably 5 ppm by mass or more. On the other hand, when the content of the above-mentioned components is 5% by mass or less in total, the stability of the glass represented by water resistance or chemical resistance is not deteriorated, and the raw material cost in the case of using a large kiln is not increased. It is easy to control and stabilize the color of the glass during production. More preferably, it is contained in an amount of 2% by mass or less based on the total amount, and more preferably 1% by mass or less. Among the above components, Ce, Sn, and Ti absorb light having a wavelength of 315 nm or less and have a higher effect, which is preferable. The wavelength selective permeable glass of the present invention preferably contains at least one element selected from the group consisting of Ce, Sn, and Ti in an amount of 0.1 ppm by mass or more, more preferably 1 ppm by mass or more. Further, it is preferably contained in an amount of 5 ppm by mass or more. On the other hand, it is preferable to contain 5% by mass or less of the above components in a total amount, more preferably 2% by mass or less, and still more preferably 1% by mass or less. Further, it is expressed by mass% of the oxide standard, preferably CeO.₂ 0.1 to 0.8%, TiO₂ 0 to 0.6%, SnO₂ 0 to 0.6%, more preferably CeO₂ 0.2 to 0.6%, TiO₂ 0 to 0.4%, SnO₂ 0 to 0.4%, and more preferably CeO₂ 0.35 to 0.45%, TiO₂ 0 to 0.2%, SnO₂ It is 0 to 0.2%. Also, in the above glass, if CeO₂ /(CeO₂ +TiO₂ +Fe₂ O₃ When the ratio is 0.2 or more, preferably 0.3 or more, more preferably 0.4 or more, and still more preferably 0.5 or more, the light transmittance T having a high effect of suppressing the progress of myopia is maintained._{360-400 nm} Absorbs light with a wavelength below 315 nm and maintains light transmittance T_{400-760 nm} The effect is therefore preferred. Further, when it is 0.95 or less, preferably 0.90 or less, more preferably 0.85 or less, coloring is suppressed, which is preferable. Further, similarly, in order to achieve a high light transmittance T for maintaining the effect of suppressing the progression of myopia_{360-400 nm} Absorbs light with a wavelength below 315 nm and maintains light transmittance T_{400-760 nm} Effect and suppression of coloring effect, CeO₂ +3×TiO₂ +6×SnO₂ It is preferably 0.1 to 2.0%, more preferably 0.3 to 1.5%, still more preferably 0.41 to 1.2%. Therefore, in the above glass, it is preferably expressed by mass% based on the oxide, and Fe is used.₂ O₃ Indicates a total iron content of 0.04 to 0.15%, CeO₂ 0.35 to 0.45%, TiO₂ 0 to 0.2%, SnO₂ 0 to 0.2%, CeO₂ +3×TiO₂ +6×SnO₂ It is 0.41 to 1.2%, and the redox ratio of iron is 25 to 65%. Further, among the above components, Au, Ag, Sn, rare earth elements (excluding La and Y), W, Mn, As, Sb, and U have an effect of absorbing ultraviolet rays having a wavelength of 315 nm or less and converting them into visible light. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably contains a component selected from the group consisting of Au, Ag, Sn, rare earth elements (except La, Y), W, Mn, As, Sb, and U. At least one element of the group is 0.1 ppm by mass or more, more preferably 1 ppm by mass or more, and still more preferably 5 ppm by mass or more, based on the total mass% of the oxide. On the other hand, it is preferable to contain 5% by mass or less of the above components in a total amount, more preferably 2% by mass or less, and still more preferably 1% by mass or less. In the laminated glass (1) of the present invention, the wavelength selective transmission glass preferably contains a group selected from the group 1 to the group 14 from the viewpoint of generating surface plasmon absorption by the metal colloid. a colloid of at least one metal element. The colloid contained therein is preferably a colloidal particle having a particle diameter of 1 μm or less, more preferably 800 nm or less, more preferably 600 nm or less, still more preferably 400 nm or less, and particularly preferably 300 nm or less. Further, the metal element is preferably at least one selected from the group consisting of Ag, Au, and Cu. The particle size of the colloidal particles in the glass was measured by image analysis using a transmission electron microscope (TEM). Further, in the laminated glass (1) of the present invention, the wavelength-selective transparent glass may contain, as a clarifying agent, 1% by mass or less, preferably 0.5% by mass or less.₃ , Cl, F. Further, the wavelength-selective transparent glass may contain Se, Co, Cr, V, another transition metal element or the like as a colorant in an amount of 1% by mass or less, preferably 0.5% by mass or less. Further, in the laminated glass (1) of the present invention, the wavelength-selective transparent glass preferably has a water content of 90 to 800 ppm by mass in the glass. When the temperature of the forming region of the glass is lowered by 90 mass ppm or more, the bending process is easily performed. In addition, the infrared absorption intensity is improved, and the heat insulation performance is improved. On the other hand, when it is 800 ppm by mass or less, the stability of the glass represented by water resistance and chemical resistance is not lowered, and the resistance to cracking or damage is not lowered. In the laminated glass (1) of the present invention, the glass mother composition of the wavelength selective transmission glass can be appropriately selected depending on the use thereof. In the case where the laminated glass (1) of the present invention is used for a window glass for building materials, interior glass, or window glass for automobiles, it is preferably represented by mass% based on oxides, and contains SiO as a glass mother composition.₂ : 60 to 80%, Al₂ O₃ : 0 to 7%, MgO: 0 to 10%, CaO: 4 to 20%, Na₂ O: 7 to 20%, K₂ O: 0 to 10%. In the case of using a high alkali aluminosilicate glass as the glass, it is represented by mass% of the oxide standard, and contains SiO as a glass mother composition.₂ :45～80%, Al₂ O₃ : more than 7% and less than 30%, B₂ O₃ : 0 to 15%, MgO: 0 to 15%, CaO: 0 to 6%, Na₂ O: 7 to 20%, K₂ O: 0 to 10%, ZrO₂ It is preferable that 0 to 10% can achieve chemical strengthening by ion exchange. Further, when a low alkali or alkali-free aluminosilicate glass is used as the glass, it is represented by mass% of the oxide standard, and contains SiO as a glass mother composition.₂ : 45 to 70%, Al₂ O₃ :10~30%, B₂ O₃ : 0 to 15%, at least one selected from the group consisting of MgO, CaO, SrO, and BaO: 5 to 30%, selected from Li₂ O, Na₂ O and K₂ At least one of the groups consisting of O: 0% or more and 7% or less is particularly preferable in terms of high weather resistance or dike adjustment. According to a second preferred embodiment of the present invention (hereinafter, referred to as laminated glass (2) of the present invention in the present specification), at least one of the first glass plate and the second glass plate is selectively transmitted through the wavelengths shown below. Composition of sexual glass items. Fig. 2 is a view showing an example of the configuration of a wavelength selective transmission glass article in the present invention. The wavelength selective transparent glass article 20 shown in Fig. 2 is composed of a glass plate 21 and a film 22 provided on the main surface of the glass plate 21. Hereinafter, the wavelength selective transparent glass article will be described by taking the illustrated example as an example, but the present invention is not limited thereto. For example, the film 22 shown in Fig. 2 is a single film, but the film in the wavelength selective permeable glass article of the present invention may also be a laminated film. Further, the wavelength selective permeable glass article 20 shown in Fig. 2 is provided with a film 22 on one main surface of the glass plate 21. However, the wavelength selective permeable glass article of the present invention may be provided with a film on both main faces of the glass plate. . When a film is provided on both main surfaces of the glass plate, the film disposed on one main surface and the film disposed on the other main surface may be the same film, or may be different films. The wavelength in the laminated glass (2) of the present invention is selected from the above-defined light transmittance T of the transparent glass article._{exceed 315 nm And 400 nm the following} More than 3%, light transmittance T_{315 nm the following} It is 60% or less. In the laminated glass (2) of the present invention, at least one of the first glass plate and the second glass plate may be a wavelength-selective transparent glass article, or both of them may be wavelength-selective transparent glass articles. In the case where any of the transparent glass articles is selected as the wavelength, it is preferable to use the first glass plate as the wavelength selective transparent glass article for the following reason. If the first glass plate on the outdoor side is set to light transmittance T_{315 nm the following} When the transmissive glass article is selected to have a wavelength of 60% or less, light deterioration of the first adhesive layer, the light direction conversion sheet, and the second adhesive layer which are located on the indoor side of the first glass sheet can be suppressed. Further, the second glass sheet has a surface on the indoor side as an uneven surface as shown in the drawing. Therefore, from the viewpoint of the production of the glass sheet, it is preferable to set the first glass sheet to a wavelength. Selective glass items. In the laminated glass (2) of the present invention, the wavelength selective transparent glass article preferably has a light transmittance T_{exceed 315 nm And 400 nm the following} It is 5% or more, more preferably 10% or more, further preferably 20% or more, further preferably 30% or more, and particularly preferably 40% or more. Moreover, the wavelength selects the transmittance T of the transmissive glass article_{exceed 315 nm And 400 nm the following} It can also be 100%. In the laminated glass (2) of the present invention, the wavelength selective transparent glass article preferably has a light transmittance T_{315 nm the following} It is 45% or less, more preferably 30% or less, further preferably 15% or less, more preferably 5% or less, still more preferably 1% or less, and most preferably 0.8% or less. Moreover, the wavelength selects the transmittance T of the transmissive glass article_{315 nm the following} Can also be 0%. In the laminated glass (2) of the present invention, the wavelength selective transparent glass article preferably has a light transmittance T_{360-400 nm} It is 3% or more, more preferably 10% or more, more preferably 20% or more, more preferably 30% or more, still more preferably 40% or more, more preferably 60% or more, and particularly preferably 80% or more. Moreover, the wavelength selects the transmittance T of the transmissive glass article_{360-400 nm} It can also be 100%. In the laminated glass (2) of the present invention, the wavelength selective transparent glass article preferably has a light transmittance T_{400-760 nm} It is 1% or more, more preferably 10% or more, more preferably 20% or more, more preferably 40% or more, more preferably 60% or more, still more preferably 80% or more, and particularly preferably 90% or more. Moreover, the wavelength selects the transmittance T of the transmissive glass article_{400-760 nm} It can also be 100%. In the laminated glass (2) of the present invention, the wavelength-selective transparent glass article preferably has a transmittance of light of a wavelength of 380 nm of 60% or more, more preferably 70% or more, and particularly preferably 80% or more. Further, the transmittance of light having a wavelength of 380 nm at a wavelength selective transparent glass article may be 100%. In the laminated glass (2) of the present invention, the wavelength-selective transparent glass article preferably has a transmittance of light of a wavelength of 350 nm of 40% or less, more preferably 30% or less, still more preferably 20% or less, and furthermore Good is less than 10%. Further, the transmittance of light having a wavelength of 350 nm at a wavelength-selective transparent glass article may be 0%. In the laminated glass (2) of the present invention, the wavelength-selective transparent glass article preferably has a transmittance of light of a wavelength of 315 nm of 10% or less, more preferably 5% or less, and still more preferably 1% or less. In the laminated glass (2) of the present invention, at least one of the glass plate and the film of the wavelength-selective transparent glass article contains a component that emits light having a wavelength of 380 nm, which is preferable because the effect of suppressing the progression of myopia is improved. The luminescent component preferably absorbs light having a wavelength of less than 360 nm and emits light. In this case, the wavelength at which the luminescence becomes maximum is preferably 360 nm or more, and more preferably in the range of 360 to 400 nm. The constituent elements of the wavelength-selective transparent glass article in the laminated glass (2) of the present invention are described below. (Glass Plate) In the wavelength-selective transparent glass article 20, the thickness of the glass plate 21 is not particularly limited as long as a specific transmittance can be obtained. When the laminated glass (2) of the present invention is used as a window glass of a building, it is usually 20 mm or less, 15 mm or less, 10 mm or less, 8 mm or less, and 2 mm or more and 3 mm or more. 4 mm or more, usually 6 mm. In the case of automotive window glass, the thickness is 1 to 5 mm. The glass plate 21 preferably transmits light having a wavelength of 360 nm by 50% or more. The reason for this is that such a glass plate allows light having a high effect of suppressing myopia progression to pass through well, and is easy to handle. This aspect will be described below. Generally, a glass containing no specific wavelength light absorbing component in the glass composition transmits light of 400 nm or less to some extent. For example, b in Figure 7 indicates a small amount of Fe.₂ O₃ An example of a transmission spectrum of a glass plate for a normal window. Further, b in Fig. 8 shows an example of a transmission spectrum of a glass plate for a display which does not contain a light-absorbing component of a specific wavelength. These ordinary glass plates are preferably used as the glass plate 21 because light having a wavelength of 360 nm is transmitted by 50% or more and light having a wavelength of 380 nm is transmitted by 80% or more. Furthermore, the usual window glass contains Fe₂ O₃ It is a color tone adjusting agent or a component contained in the form of impurities in a raw material, but also functions as a specific wavelength light absorbing component. On the other hand, since the prior art, glass containing various specific wavelength light absorbing components has been developed as an ultraviolet absorbing glass. For example, there is CeO₂ Or Fe₂ O₃ Such as a specific wavelength light absorption component. Most of these ultraviolet absorbing glasses contain metal ions as light absorbing components of specific wavelengths. Metal ions generally exhibit relatively broad light absorption characteristics, so most ultraviolet absorbing glasses absorb light in a wide range of wavelength regions. In this case, the transmittance of light having a transmittance of light having a wavelength of 360 nm and having a wavelength of 380 nm is also lowered. Therefore, these ultraviolet absorbing components must be appropriately formulated. As the ultraviolet absorbing glass, a glass which absorbs only a specific wavelength by depositing fine particles in the glass or the like is also known. However, such glasses are difficult to handle due to thermal or chemical instability. Light transmittance of glass plate 21_{400-760 nm} It is not particularly limited and can be appropriately set according to the use of the glass article. The glass composition of the glass plate 21 is not particularly limited as long as it can obtain a desired transmittance. As the glass composition of the glass plate 21, for example, the soda lime glass used for the window glass or the (alkali-free) aluminum borosilicate glass used for the display substrate, and the alkali aluminosilicate glass used for chemical strengthening use are used. It is excellent in durability and is therefore preferred. In the case where the light transmittance is to be lowered, the glass plate is more preferably the above-mentioned glass containing a specific wavelength light absorbing component. (Film) The film 22 preferably contains a component that absorbs light having a wavelength of less than 360 nm or a component that reflects or scatters light having a wavelength of less than 360 nm. In this case, the light transmittance of the wavelength selective transparent glass article 20 becomes lower than the light transmittance of the glass plate 21. The thickness of the film 22 is not particularly limited as long as the desired transmittance is obtained, and is preferably 1 μm or more, preferably 2 μm or more, and more preferably 5 μm or more in order to obtain better light transmission characteristics. Further, the thickness of the film is usually 100 μm or less. The material of the film 22 is not particularly limited, and may be an organic substance such as a resin or an inorganic substance. The film 22 preferably contains a specific wavelength light absorbing component that absorbs light having a wavelength of less than 360 nm, or a specific wavelength light reflecting component that reflects light having a wavelength of less than 360 nm. In this case, the film 22 may be composed of a specific wavelength light absorbing component or a specific wavelength light reflecting component, or may be a light absorbing component or a specific wavelength light reflecting component dispersed or dissolved in the matrix. Further, the specific wavelength light reflection component has a function of scattering a component that scatters light having a wavelength of less than 360 nm (hereinafter also referred to as a specific wavelength light reflection component). In the case where the film 22 contains a light-reflecting component of a specific wavelength, it is preferable that the film surface is composed of a light-reflecting component of a specific wavelength in terms of stability of optical characteristics. Further, it is preferable that the specific wavelength light reflecting component is disposed so as to appropriately scatter light having a wavelength of less than 360 nm. In the case where the film 22 is composed of a specific wavelength light reflecting component, it is preferable that the film 22 is composed of a dielectric volume layer film. In this case, by appropriately designing the number of layers constituting the laminated film, the material of each layer, the order of arrangement, and the like, the laminated film can exhibit the reflection characteristics of light having a wavelength of less than 360 nm (light of a specific wavelength). For example, the laminated film is formed by sequentially laminating the first layer, the second layer, the third layer, and the fourth layer from the side closer to the first surface of the transparent substrate, and it is preferable to alternately laminate the layers with a higher refractive index. The "high refractive index layer" and the "low refractive index layer" having a low refractive index. That is, the first layer and the third layer preferably have a refractive index greater than that of the second layer and the fourth layer. In this case, the refractive indices of the first layer and the third layer are preferably 2.0 or more, and more preferably 2.1 or more. Examples of the material constituting such a "high refractive index layer" include titanium oxide, cerium oxide, zirconium oxide, cerium oxide, and cerium oxide. The thickness of the first layer is preferably from 5 nm to 20 nm. The thickness of the third layer is preferably from 45 nm to 125 nm. The third layer is made of the same material as the first layer. The refractive indices of the second layer and the fourth layer are preferably from 1.4 to 1.8. Examples of the material constituting such a "low refractive index layer" include cerium oxide, aluminum oxide, and the like. The cerium oxide may also be doped with other elements such as aluminum. The thickness of the second layer is preferably from 15 nm to 45 nm. The thickness of the fourth layer is preferably from 0 nm to 110 nm. Further, the fifth layer, the sixth layer, the ...th nth layer (n is an integer of 5 or more) may be present. Further, the low refractive index layer is not necessarily required directly under the outermost layer, and the high refractive index layer may be directly under the outermost layer. The layers constituting the laminated film can also be provided by any method. Each layer can be formed, for example, by a vapor deposition method, a sputtering method, a CVD (Chemical Vapor Deposition) method, or the like. In the case where the film 22 contains a composition of a specific wavelength light absorbing component in the matrix, it is preferred that the specific wavelength light absorbing component is uniformly dissolved or dispersed by small particles to such an extent that light is not scattered. In this case, the fog value decreases. The haze value of the film is preferably 20% or less, more preferably 10% or less, still more preferably 1% or less. The matrix component of the film 22 is preferably such that light having a wavelength exceeding 315 nm and 400 nm or less is transmitted, and examples thereof include an inorganic substrate such as cerium oxide, an epoxy resin, an acrylic resin, a polycarbonate resin, and a melamine resin. An organic matrix of the kind, an organic inorganic matrix obtained by compounding an organic compound and an inorganic compound, and the like. The organic substrate is preferably a fluororesin from the viewpoint of transmitting light having a wavelength exceeding 315 nm and 400 nm or less. The matrix component is preferably a compound which does not absorb light in the visible light region (400 to 760 nm, the same applies hereinafter), but may absorb light in the visible light region when coloring is allowed. In the case where the film 22 contains a specific wavelength light absorbing component, the specific wavelength light absorbing component is preferably a component that absorbs light having a wavelength of 315 nm or less. The specific wavelength light absorbing component may be a powder or a liquid. By including the film 22 as a component, even if a general window glass is used as the glass plate 21, a glass article that blocks light in a harmful wavelength region can be obtained. The light-absorbing component of the specific wavelength includes, for example, one selected from the group consisting of a benzotriazole-based compound, a triterpenoid compound, a benzophenone-based compound, a malonic ester-based compound, and a oxalic acid-based compound. The above is called ultraviolet absorber. Examples of the benzotriazole-based compound include 2-[5-chloro(2H)-benzotriazol-2-yl]-4-methyl-6-(t-butyl)phenol, 3-[ 3-tert-4-hydroxy-5-[5-chloro-2H-benzotriazol-2-yl]propionic acid octyl ester, 2-(2H-benzotriazol-2-yl)-4,6- Di-tert-amylphenol, 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-[2-hydroxy-3-(3,4,5,6-tetrahydrophthalic acid醯imino-methyl)-5-methylphenyl]benzotriazole, 2-(2-hydroxy-5-th-octylphenyl)benzotriazole, 2-(2-hydroxy-5- Ternyl butyl)-2H-benzotriazole, methyl 3-(3-(2H-benzotriazol-2-yl)-5-t-butyl-4-hydroxyphenyl)propanoate , 2-(2H-benzothiazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol and 2-(2H-benzotriazol-2-yl)- 6-(1-Methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol and the like. Examples of the triterpenoid compound include 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis (2, 4-dimethylphenyl)-1,3,5-triazine, 2-[4-[(2-hydroxy-3-(2'-ethyl)hexyl)oxy]-2-hydroxyphenyl] -4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-butoxyphenyl)-6-(2 ,4-bisbutoxyphenyl)-1,3,5-triazine and 2-(2-hydroxy-4-[1-octylcarbonylethoxy]phenyl)-4,6-bis (4 -Phenylphenyl)-1,3,5-triazine, and the like. Examples of the benzophenone-based compound include 2,4-dihydroxybenzophenone, 2,2',3-trihydroxybenzophenone, and 2,2',4,4'-tetrahydroxy group. Benzophenone, 2,4-dihydroxy-2',4'-dimethoxybenzophenone, 2-hydroxy-4-n-octyloxybenzophenone, and the like. Examples of the malonic ester-based compound include dimethyl [(4-methoxyphenyl)methylene]malonate. Examples of the herbicidal aniline compound include N-(2-ethoxyphenyl)-N'-(2-ethoxyphenyl)ethylenediamine and N-(4-dodecylbenzene). Base) -N'-(2-ethoxyphenyl)ethylenediamine and the like. In the present invention, the specific wavelength light absorbing components may be used singly or in combination of two or more. More preferably, the film 22 contains a component that generates luminescence. The light absorbing component of a specific wavelength is more preferably a component that absorbs light having a wavelength of less than 360 nm and generates light having a wavelength of about 380 nm. By containing such a component, light having a high effect of suppressing myopia progression can be efficiently transmitted, and light in a harmful wavelength region can be blocked. Examples of the component that generates light emission include fluorescent glass, BaFX (X=Cl, I) doped with Eu(II), and CaWO doped with Eu(II).₃ A fluorescent dye such as a triazole derivative, a fluorinated whitening agent such as a bis(tridecylamino)phosphonium disulfonic acid derivative or a bisstyrylbiphenyl derivative. The specific wavelength light absorbing component and the component that generates luminescence are preferably compounds that do not absorb the wavelength of the visible light region, but may absorb the wavelength of the visible light region when coloring is allowed. The laminated glass (1) and (2) of the present invention achieve wavelength selective permeability by at least one of the first glass plate and the second glass plate, thereby achieving wavelength selective permeability of the laminated glass. At least one of the constituent elements other than the first glass sheet and the second glass sheet, specifically, the first back layer, the light direction conversion sheet, and the second back layer may be selected for wavelength selective permeability. The wavelength of the laminated glass is selected to select permeability. Further, in the case where the light direction conversion sheet contains a component, it has a function of continuation itself, and at least one of the first layer and the second layer or both may be omitted. In this case, the laminated glass of the five layers of FIG. 1 is a laminated glass of three or four layers. By selecting at least one of the first adhesive layer and the second adhesive layer as the wavelength selective permeability, the wavelength of the laminated glass is selected to be transparent, and the option of the first glass plate or the second glass plate is expanded, and the laminate can be laminated. Glass gives design. (Bottom Layer) Examples of the material of the adhesive layer include an ethylene-vinyl acetate copolymer, polyvinyl butyral (hereinafter referred to as "PVB"), an acrylic adhesive, and a thermoplastic resin composition. The materials of the respective layers may be the same or different. Examples of the thermoplastic resin contained in the thermoplastic resin composition include plasticized polyvinyl acetal, plasticized polyvinyl chloride, saturated polyester, plasticized saturated polyester, polyurethane, plasticized polyurethane, and ethylene-vinyl acetate. Ester copolymer, ethylene-ethyl acrylate copolymer, and the like. The thickness of the layer may be a thickness which maintains the function as an adhesive layer, and is, for example, preferably 0.01 to 1.5 mm, more preferably 0.05 to 1 mm. The layer is then given wavelength selective permeability by adding a specific ultraviolet absorber. Specifically, the wavelength selective permeability can be imparted by adding an ultraviolet absorber having a high effect of absorbing ultraviolet rays having a wavelength of less than 360 nm. As a UV absorber which absorbs ultraviolet rays having a wavelength of less than 360 nm, for example, a benzophenone-based ultraviolet absorber, a oxalic acid-based ultraviolet absorber, a hydroxyphenyl triterpenoid ultraviolet absorber, or an inorganic solution can be used. It is a UV absorber or the like. As the inorganic ultraviolet absorber, for example, particles such as zinc oxide, titanium oxide, cerium oxide, zirconium oxide, mica, kaolin, or sericite can be used. When the above ultraviolet absorbing agent is selected, light harmful to the eyes can be absorbed, and light which is useful for suppressing the progression of myopia can be transmitted. Among them, a benzophenone-based ultraviolet absorber, a oxalic acid-based ultraviolet absorber, and a hydroxyphenyl trifluorene-based ultraviolet absorber are preferable because they can efficiently absorb ultraviolet rays having a wavelength of less than 360 nm. Fig. 3 is a transmission spectrum of a oxalic acid-based urethane ultraviolet absorbing agent, a hydroxyphenyl triterpenoid ultraviolet absorbing agent, and a benzotriazole-based ultraviolet absorbing agent widely used as an ultraviolet absorbing agent. The transmission spectrum shown in Fig. 3 was measured under the following conditions. Unit length: 10 mm Solvent: cyclohexanone concentration: 10 mg/L As shown in Fig. 3, oxalic acid-based aniline-based ultraviolet absorber and hydroxyphenyl triterpenoid ultraviolet absorber and benzophenone widely used as ultraviolet absorber Compared with the triazole-based ultraviolet absorber, the transmittance on the short-wavelength side is lower, and it is confirmed that the ultraviolet light having an absorption wavelength of less than 360 nm has a higher effect. 4 is a transmission spectrum of a PVB layer (thickness: 0.76 mm) to which 0.2% by mass of a hydroxyphenyl trifluorene-based ultraviolet absorber or benzotriazole-based ultraviolet absorber is 5% by mass. As shown in FIG. 4, the PVB layer to which the oxalic acid-based ultraviolet absorber is added is compared with the PVB layer to which the benzotriazole-based ultraviolet absorber widely used as the ultraviolet absorber is added, and the ultraviolet light having a wavelength of 360 nm or more is used. The transmittance is improved, and it is confirmed that the transmittance is selected to be specific wavelength. The amount of the ultraviolet absorber added to the adhesive layer is desirably 0.1 to 10% by mass, but also depends on the thickness of the adhesive layer. When the amount is 0.1 to 10% by mass, the useful light can be transmitted and absorbed harmful light. When it is 0.1% by mass or less, there is a possibility that the harmful light is not sufficiently absorbed, and when it is more than 10% by mass, it may bleed out from the adhesive layer, resulting in a defect. These may be used alone or in combination of two or more. The ultraviolet absorber may be added to only one of the first adhesive layer and the second adhesive layer, or may be added to both. When the ultraviolet absorber is added to both the first adhesive layer and the second adhesive layer, the constituent materials of the first adhesive layer and the second adhesive layer can be integrated, and the management cost and the manufacturing cost can be reduced. [Examples] Hereinafter, the present invention will be further described by way of examples. (Examples 1-1 to 1-29) In Examples 1-1 to 1-29, the wavelength-selective-transmissive glass used for the laminated glass (1) of the present invention was produced by the procedure shown below. A glass raw material which is usually used, such as an oxide, is appropriately selected so as to have a glass composition as shown in the following Tables 1 to 6, and the mixture is placed in a platinum crucible and placed in a resistance heating electric furnace at 1600 ° C for 3 hours. After melting to defoam and homogenize, it flows into the molding material, and is kept at a temperature of about 30 ° C higher than the glass transition point for 1 hour or more, and then slowly cooled to room temperature at a cooling rate of 0.3 to 1 ° C per minute. Thus, the plate-shaped glass samples (thickness: 6 mm) of Examples 1-1 to 1-29 were produced. With respect to the obtained glass sample, the spectral curve of the glass sample was measured by a spectrophotometer, and the redox ratio of iron was calculated from the spectral curve using the following formula (1). Iron redox rate (%) = -log_e (T_{1000 nm} /91.4)/(Fe₂ O₃ Quantity × t × 20.79) × 100・・・(1). Among them, T_{1000 nm} The transmittance (%) at a wavelength of 1000 nm measured by a spectrophotometer (manufactured by Perkin Elmer, Lambda 950), t is the thickness (cm) of the glass sample, Fe₂ O₃ The amount of Fe determined by fluorescent X-ray measurement₂ O₃ Total iron content converted (% = mass percentage). Also, regarding the transmittance T of a wavelength exceeding 315 nm and below 400 nm_{exceed 315 nm And 400 nm the following} Transmittance T of wavelength 360-400 nm_{360-400 nm} Light transmittance T below the wavelength 315 nm_{315 nm the following} Light transmittance T at a wavelength of 400 to 760 nm_{400-760 nm} The main wavelength Dw was measured using a spectrophotometer (manufactured by Perkin Elmer, Lambda 950). The results are shown in Tables 1 to 6. [Table 1] [Table 2] [table 3] [Table 4] [table 5] [Table 6] The transmittance of the glass of Examples 1-1 to 1-29 exceeds 315 nm and the transmittance of 400 nm or less_{exceed 315 nm And 400 nm the following} Both are more than 3%, and the transmittance T below the wavelength of 315 nm_{315 nm the following} All are below 60%. It is considered that when the glass of Examples 1-1 to 1-29 is used as the wavelength-selective transparent glass of the laminated glass (1) of the present invention, the light transmittance T of the laminated glass is considered._{exceed 315 nm And 400 nm the following} Become 3% or more, light transmittance T_{315 nm the following} Become 60% or less. (Examples 2-1 to 2-5) In Examples 2-1 to 2-5, the wavelength-selective-transmissive glass article used for the laminated glass (2) of the present invention was produced in the following order. [Example 2-1] The total thickness of the first layer to the fourth layer was formed by sputtering on an alkali aluminum silicate glass plate (manufactured by Asahi Glass Co., Ltd., trade name: Dragontrail) having a thickness of 2 mm. Layered film. The laminated film contains a specific wavelength light reflecting component. The laminated film is composed of the following layers from the side close to the glass plate: Layer 1: Nb₂ O₅ Layer, thickness 29.0 nm, layer 2: SiO₂ Layer, thickness 22.3 nm, layer 3: Nb₂ O₅ Layer, thickness 102.1 nm, layer 4: SiO₂ Layer, thickness 96.1 nm. The first and third layers use NbO_X Target (x<2) as target, in Ar+O₂ The film was formed by sputtering under the environment (oxygen 8 vol%). The sputtering pressure was set to 0.37 Pa. The second and fourth layers use the Si target as the target at Ar+O₂ The film was formed by sputtering using an environment (oxygen 60 vol%). The sputtering pressure was set to 0.17 Pa. Secondly, the same Nb is formed on the back side.₂ O₅ SiO₂ The film is selected to have a wavelength selective permeable glass article. For the glass articles obtained, the ISR 3106-1998 is used to determine the light transmittance. The transmission spectrum at a wavelength of 300 to 400 nm is shown in Fig. 5. Also, the transmittance T of the wavelength exceeding 315 nm and below 400 nm_{exceed 315 nm And 400 nm the following} Light transmittance T below the wavelength 315 nm_{315 nm the following} Transmittance T of wavelength 360-400 nm_{360-400 nm} Light transmittance T at a wavelength of 400 to 760 nm_{400-760 nm} Transmittance T of light with a wavelength of 380 nm_{380 nm} Transmittance T of light with a wavelength of 350 nm_{350 nm} Transmittance T of light with a wavelength of 315 nm_{315 nm} Also shown in Table 7. Further, the transmittance of light having a wavelength of 350 nm of the glass plate is shown in Table 7. [Example 2-2] In the same manner as in Example 2-1, an alkali aluminosilicate glass plate (manufactured by Asahi Glass Co., Ltd., trade name: Dragontrail) having a thickness of 2 mm was formed by sputtering. The first layer to the eighth layer have a laminated film of 8 layers in total. The laminated film contains a specific wavelength light reflecting component. The laminated film is composed of the following layers from the side close to the glass plate: Layer 1: Nb₂ O₅ Layer, thickness 0.6 nm, layer 2: SiO₂ Layer, thickness 87.2 nm, layer 3: Nb₂ O₅ Layer, thickness 13.8 nm, layer 4: SiO₂ Layer, thickness 45.6 nm, layer 5: Nb₂ O₅ Layer, thickness 34.1 nm, layer 6: SiO₂ Layer, thickness 23.4 nm, layer 7: Nb₂ O₅ Layer, thickness 31.0 nm, layer 8: SiO₂ Layer, thickness 98.1 nm. Secondly, Nb is also formed on the back side.₂ O₅ SiO₂ The film is selected to have a wavelength selective permeable glass article. The laminated film on the back side is composed of the following layers from the side close to the glass plate: Layer 1: Nb₂ O₅ Layer, thickness 6.6 nm, layer 2: SiO₂ Layer, thickness 79.0 nm, layer 3: Nb₂ O₅ Layer, thickness 20.0 nm, layer 4: SiO₂ Layer, thickness 38.6 nm, layer 5: Nb₂ O₅ Layer, thickness 39.1 nm, layer 6: SiO₂ Layer, thickness 20.4 nm, layer 7: Nb₂ O₅ Layer, thickness 35.0 nm, layer 8: SiO₂ Layer, thickness 101.0 nm. The transmission spectrum at a wavelength of 300 nm to 400 nm of a glass article having a laminated film formed on both sides is shown in Fig. 6 . Further, the transmittance is shown in Table 7 in the same manner as in Example 2-1. [Example 2-3] An alcohol solvent (manufactured by Japan Alcohol Trading Co., Ltd., trade name: Solmix AP-1) 50 g, tetramethoxydecane 12 g, 3-glycidoxypropyltrimethoxydecane 3.8 g, 2-[4-[(2-hydroxy-3-(2'-ethyl)hexyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylbenzene) Base, -1,3,5-trimethyl 10 g, 11 g of acetic acid, and 11 g of ion-exchanged water were mixed to obtain a coating liquid. The coating liquid comprises 2-[4-[(2-hydroxy-3-(2'-ethyl)hexyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethyl Phenylphenyl)-1,3,5-triazine is a specific wavelength light absorbing component, and contains tetramethoxynonane and 3-glycidoxypropyltrimethoxydecane as a matrix component. The coating liquid was applied by an applicator on a soda lime glass plate (manufactured by Asahi Glass Co., Ltd., trade name: transparent floating plate glass) having a thickness of 2 mm, and dried at 150 ° C for 30 minutes to obtain wavelength selective permeability. Glass items. The transmission spectrum thereof is shown in a of Fig. 7. Further, the transmittance is shown in Table 7 in the same manner as in Example 2-1. Further, the broken line b in Fig. 7 is a transmission spectrum in which the thickness of the film of 2 mm soda lime glass plate (Reference Example) is not formed. [Example 2-4] Wavelength selective transmission was obtained in the same manner as in Example 2-3 except that an alkali aluminum silicate glass plate (manufactured by Asahi Glass Co., Ltd., trade name: Dragontrail) having a thickness of 0.5 mm was used. Sexual glass items. The transmission spectrum thereof is shown in a of Fig. 8. Further, the transmittance is shown in Table 7 in the same manner as in Example 2-1. Further, the broken line b in Fig. 8 is a transmission spectrum of an alkali aluminosilicate glass plate (Reference Example) in which the thickness of the above film is not formed 0.5 mm. [Example 2-5] 54.6 g of butyl acetate (manufactured by Junsei Chemical Co., Ltd.), a ruthenium-acrylic resin solution (manufactured by DIC Co., Ltd.: BZ-1160) as a matrix component, 45.4 g, [(4- 0.02 g of methoxyphenyl)methylene]malonate (manufactured by Clariant Japan, trade name: PR25) was mixed to obtain a coating liquid. This coating liquid contains dimethyl [(4-methoxyphenyl)methylene]malonate as a specific wavelength light absorbing component, and contains a fluorene-acrylic resin as a matrix component. The above coating liquid was applied by an applicator on a soda lime glass plate (manufactured by Asahi Glass Co., Ltd., trade name: transparent floating plate glass) having a thickness of 2 mm, and dried at 100 ° C for 30 minutes to obtain a thickness of 6 μm. The wavelength of the film is selected as a transmissive glass article. The transmission spectrum thereof is shown in a of Fig. 9. Further, the transmittance is shown in Table 7 in the same manner as in Example 2-1. Further, the broken line b in Fig. 9 is a transmission spectrum in which the thickness of the film of 2 mm soda lime glass plate (Reference Example) is not formed. [Table 7] As shown in Table 7 and Figs. 5 to 9, the wavelengths of the wavelength-selective transparent glass articles of Examples 2-1 to 2-5 exceed the light transmittance T of 315 nm and 400 nm or less._{exceed 315 nm And 400 nm the following} Light transmittance T of 3% or more and a wavelength of 315 nm or less_{315 nm the following} It is 60% or less. It is considered that when the glass article of Examples 2-1 to 2-5 is used as the wavelength-selective transparent glass article of the laminated glass (2) of the present invention, the light transmittance T of the laminated glass is considered._{exceed 315 nm And 400 nm the following} Become 3% or more, light transmittance T_{315 nm the following} Become 60% or less. [Example 3-1 (Example)] The wavelength-selective transparent glass article produced in Example 2-5 was used as the first glass plate, and the embossed glass was used as the second glass plate, and the layers were sequentially laminated from the outside to the inside. 1 glass plate, polyvinyl butyral as a first adhesive layer (hereinafter referred to as PVB, thickness: 0.76 mm), a light direction conversion sheet, PVB (thickness: 0.76 mm) as a second adhesive layer, and a second glass plate The configuration of Fig. 1 was carried out, and the laminated body was pre-compressed, and then vacuum-heated and pressure-bonded using an autoclave to obtain a laminated glass of Example 3-1. Further, as the light direction conversion sheet, a film having a visible light transmittance of 92.6% and which is detected by directing light when the light is incident perpendicularly to the sheet (detection angle of 0 degree) is used. Light is also detected near the detection angle of 20 degrees. [Example 3-2, 3-3 (Comparative Example)] In Example 3-1, a soda lime glass plate (manufactured by Asahi Glass Co., Ltd., trade name: transparent floating plate glass) having a thickness of 2 mm was used as the first glass plate. In the same manner as in Example 3-1, the same procedure as in Example 3-1 was carried out except that PVB (thickness: 0.76 mm) containing 5% by mass of a benzotriazole-based ultraviolet absorber was used as the first adhesive layer and the second adhesive layer. The laminated glass of Example 3-2 was obtained. In Example 3-1, the laminated glass of Example 3-3 was obtained by pressure-bonding in the same manner as in Example 3-1 except that the light direction conversion sheet and the second adhesive layer were not used. [Example 3-4 (Example)] In Example 3-1, a soda lime glass plate (manufactured by Asahi Glass Co., Ltd., trade name: transparent floating plate glass) having a thickness of 2 mm was used as the first glass plate, and the use thereof was contained. A PVB (thickness: 0.76 mm) of a 0.2% by mass of a hydroxytriazine-based ultraviolet absorber was used as a first-order layer to select a transparent layer, and a pressure-bonding method was used in the same manner as in Example 3-1. Laminated glass of 3-4. The transmission spectra of Examples 3-1, 3-2, 3-3, and 3-4 are shown in Fig. 10. Further, the light transmittance in each wavelength region is shown in Table 8. Further, the curve a of Fig. 10 shows the transmission spectrum of Example 3-1, the curve b shows the transmission spectrum of Example 3-2, the curve c shows the transmission spectrum of Example 3-3, and the curve d shows the transmission spectrum of Example 3-4. [Table 8] (Evaluation of Light Distribution Characteristics) For Examples 3-1, 3-2, 3-3, and 3-4, incident light was incident at an angle of 0° with respect to the vertical direction of the laminated glass, and the penetration of the transmitted laminated glass was observed. The light is changed at an angle of 0 to -90° with respect to the vertical direction of the substrate, and the transmittance value at each angle is measured. The transmittance is measured as a representative of visible light, and the value of light having a wavelength of 555 nm is measured, and the value of light having a wavelength of 380 nm is measured as a representative of light in a specific wavelength region in which the effect of suppressing myopia progress is high. The result of measuring the transmittance by changing the angle is defined as the light distribution characteristic, and is shown in Fig. 11 (Example 3-1), Fig. 12 (Example 3-2), Fig. 13 (Example 3-3), and Fig. 14 (Example 3). -4). In FIGS. 11 to 14, the broken line indicates the transmittance of light having a wavelength of 555 nm, and the solid line indicates the transmittance of light having a wavelength of 380 nm. It is known that the wavelengths of Examples 3-1 and 3-4 are selected to be permeable laminated glass, and light having a wavelength of 555 nm and light having a wavelength of 380 nm are diffused. In contrast, the laminated glass of Example 3-2 has a wavelength of 555 nm. The light diffuses, but the light at 380 nm does not diffuse. It was found that the laminated glass of Example 3-3 allows light having a wavelength of 555 nm and light having a wavelength of 380 nm to be linearly transmitted with respect to the incident direction, but the light is not diffused in other directions. The present invention has been described in detail with reference to the specific embodiments thereof. It is understood that various changes and modifications may be added without departing from the spirit and scope of the invention. The present application is based on Japanese Patent Application No. 2017-006026, filed on Jan. 17,,,,,,,,,,,,, in.

10‧‧‧Laminated glass

11‧‧‧1st glass plate

12‧‧‧1st layer

13‧‧‧Light direction conversion sheet

14‧‧‧2nd layer

15‧‧‧2nd glass plate

20‧‧‧ Wavelength selection of transmissive glass items

21‧‧‧ glass plate

22‧‧‧ film

Fig. 1 is a cross-sectional view showing an example of a configuration of a wavelength selective transmission laminated glass. Fig. 2 is a cross-sectional view showing a configuration example of a wavelength selective transmission glass article. Fig. 3 is a transmission spectrum of a oxalic acid-based ultraviolet absorber, a hydroxyphenyl triterpenoid ultraviolet absorber, and a benzotriazole-based ultraviolet absorber widely used as an ultraviolet absorber. Fig. 4 is a transmission spectrum of a polyvinyl butyral (PVB) resin layer (thickness: 0.76 mm) to which 0.2% by mass of a hydroxyphenyl triterpenoid ultraviolet absorber or benzotriazole-based ultraviolet absorber is 5% by mass. . Fig. 5 is a view showing a transmission spectrum of a wavelength selective transmission glass article of Example 2-1. Fig. 6 is a view showing a transmission spectrum of a wavelength selective transparent glass article of Example 2-2. Fig. 7 is a view showing a transmission spectrum of a wavelength selective transparent glass article and a glass plate of Example 2-3. Fig. 8 is a view showing a transmission spectrum of a wavelength selective transparent glass article and a glass plate of Example 2-4. Fig. 9 is a view showing an example of transmission spectra of a wavelength-selective transparent glass article and a glass plate of Example 2-5. Fig. 10 is a view showing an example of a transmission spectrum of a wavelength-selective transparent laminated glass of Examples 3-1, 3-2, 3-3, and 3-4. Fig. 11 is a graph showing the light distribution characteristics of the wavelength-selective permeable laminated glass of Example 3-1. Fig. 12 is a graph showing the light distribution characteristics of the wavelength-selective permeable laminated glass of Example 3-2. Fig. 13 is a view showing the light distribution characteristics of the wavelength-selective permeable laminated glass of Example 3-3. Fig. 14 is a view showing the light distribution characteristics of the wavelength-selective permeable laminated glass of Example 3-4.

Claims (30)

A wavelength selective permeable laminated glass comprising the following laminated glass: a light direction converting sheet that directionally converts and transmits at least a portion of light from the outside toward the room; the first glass sheet The light direction conversion sheet is disposed on the outdoor side as a reference; the first adhesive layer is followed by the light direction conversion sheet and the first glass sheet; and the second glass sheet is based on the light direction conversion sheet. And a second adhesive layer, wherein the light direction conversion sheet is followed by the second glass sheet; and the light transmittance T _{exceeding 315} nm and 400 nm or less represented by the following formula _{exceeds 315. Nm and 400 nm or less} are 3% or more, and the light transmittance T _{315 nm or less} at a wavelength of 315 nm or less represented by the following formula is 60% or less; [Number 1] [Number 2] [In the above formula, A _k is used to calculate the weighting coefficient at the wavelength k (nm) of T (light transmittance) specified in ISO-9050:2003, and T _k is the transmittance at the wavelength k (nm)] . The wavelength of the request item 1 is selected as the transparent laminated glass, wherein the light transmittance T _{360-400 nm} of the wavelength of 360 to 400 nm represented by the following formula is 3% or more; [Number 3] (A _k and T _k in the above formula are the same as described above). The transparent laminated glass is selected according to the wavelength of the claim 1 or 2, wherein the light transmittance T _{400-760 nm} of the wavelength of 400 to 760 nm represented by the following formula is 1% or more; [Number 4] (In the above formula, A' _k is used to calculate a weighting coefficient at a wavelength k (nm) of a light transmittance (D65 light source) Tv_D65 prescribed in ISO-9050:2003, and T _k is the same as above). The wavelength selective permeable laminated glass according to any one of claims 1 to 3, wherein a transmittance of light having a wavelength of 380 nm is 40% or more, a transmittance of light having a wavelength of 350 nm is 30% or less, and a wavelength of 315 nm is obtained. The light transmittance is 10% or less. The wavelength-selective permeable laminated glass according to any one of claims 1 to 4, wherein at least one of the first glass plate and the second glass plate has a light transmittance T _{exceeding 315 nm and 400 nm or less} When the thickness is 6 mm or less, the transmittance is 3% or more, and the transmittance is T _{315 nm or} less. The transmittance is 60% or _less in terms of a thickness of 6 mm. The permeable laminated glass is selected from the wavelength of the claim 5, wherein the light transmittance T _{360-400 nm of} the wavelength selective permeable glass is 3% or more in terms of a sheet thickness of 6 mm. The permeable laminated glass is selected from the wavelength of the claim 5 or 6, wherein the light transmittance T _{400-760 nm of} the wavelength selective permeable glass is 1% or more in terms of a plate thickness of 6 mm. The wavelength-selective permeable laminated glass according to any one of claims 5 to 7, wherein the wavelength-selective permeable glass has a total iron content represented by Fe ₂ O ₃ of 0.001 to 10% by mass, and the redox ratio of iron The value is 5 to 80%. The wavelength-selective permeable laminated glass according to any one of claims 5 to 8, wherein the wavelength-selective permeable glass contains a material selected from the group consisting of Au, Ag, Sn, rare earth elements (except La, Y), Ti, W, and Mn. At least one element of the group consisting of As, Sb, and U is 0.1 ppm by mass or more and 5% by mass or less in terms of total amount of oxides. The wavelength-selective permeable glass of the wavelength-selective permeable glass containing at least one element selected from the group consisting of Ce, Sn, and Ti in an amount of 0.1 mass ppm or more in terms of oxides And 5% by mass or less. The permeable transparent laminated glass is selected according to the wavelength of claim 9, wherein the wavelength selective permeable glass contains a component selected from the group consisting of Au, Ag, Sn, rare earth elements (except La, Y), W, Mn, As, Sb, and U. At least one element of the group is 0.1 ppm by mass or more and 5% by mass or less based on the total amount of the oxide. The wavelength-selective permeable laminated glass according to any one of claims 5 to 11, wherein the wavelength-selective permeable glass is represented by mass% of an oxide standard, and contains SiO ₂ as a glass mother composition: 60 to 80%, and Al ₂ O ₃ : 0 to 7%, MgO: 0 to 10%, CaO: 4 to 20%, Na ₂ O: 7 to 20%, and K ₂ O: 0 to 10%. The wavelength-selective permeable laminated glass according to any one of claims 5 to 11, wherein the wavelength-selective permeable glass is represented by mass% of an oxide standard, and contains SiO ₂ as a glass mother composition: 45 to 80%, and Al ₂ O ₃ : more than 7% and 30% or less, B ₂ O ₃ : 0 to 15%, MgO: 0 to 15%, CaO: 0 to 6%, Na ₂ O: 7 to 20%, K ₂ O: 0 ～10%, ZrO ₂ : 0 to 10%. The wavelength-selective permeable laminated glass according to any one of claims 5 to 11, wherein the wavelength-selective permeable glass is represented by mass% of an oxide standard, and contains SiO ₂ as a glass mother composition: 45 to 70%, and Al ₂ O ₃ : 10 to 30%, B ₂ O ₃ : 0 to 15%, at least one selected from the group consisting of MgO, CaO, SrO, and BaO: 5 to 30%, selected from Li ₂ O, Na At least one of the group consisting of ₂ O and K ₂ O: 0% or more and 7% or less. The wavelength-selective permeable laminated glass according to any one of claims 1 to 4, wherein at least one of the first glass plate and the second glass plate comprises a glass plate and a film provided on a main surface of the glass plate The transmissive glass article is selected such that the light transmittance T _{exceeds 315 nm and 400 nm or less} is 3% or more, and the light transmittance T _{315 nm or less} is 60% or less. The wavelength of the request item 15 is selected from the group consisting of a permeable laminated glass, wherein the transmittance of light having a wavelength of 380 nm of the wavelength-selective transparent glass article is 70% or more, and the transmittance of light having a wavelength of 350 nm is 40% or less, and the wavelength is The transmittance of light at 315 nm is 10% or less. The permeable laminated glass is selected from the wavelengths of claim 15 or 16, wherein at least one of the glass plate and the film of the wavelength selective permeable glass article contains a component that emits light having a wavelength of 380 nm. The wavelength-selective permeable laminated glass according to any one of claims 15 to 17, wherein a transmittance of light having a wavelength of 360 nm of the glass plate of the wavelength selective permeable glass article is 50% or more. The wavelength-selective permeable laminated glass according to any one of claims 15 to 18, wherein said film of said wavelength selective permeable glass article contains a component that absorbs light having a wavelength of less than 360 nm. The wavelength selective permeable laminated glass according to any one of claims 15 to 18, wherein said film of said wavelength selective permeable glass article contains a component that reflects light having a wavelength of less than 360 nm. The wavelength-selective permeable laminated glass according to any one of claims 1 to 4, wherein at least one of the first adhesive layer and the second adhesive layer has a light transmittance T _{exceeding 315 nm and 400 nm or less} The permeable glass article is selected to have a wavelength of 3% or more and the light transmittance T _{315 nm or less} is 60% or less. The transmissive laminated glass is selected according to the wavelength of the claim 21, wherein the transmittance of the light having a wavelength of 380 nm of the wavelength selective transparent glass article is 70% or more, and the transmittance of light having a wavelength of 350 nm is 40% or less, and the wavelength is The transmittance of light at 315 nm is 10% or less. The permeable transparent laminated glass is selected from the wavelength of the claim 21 or 22, wherein the wavelength selective permeable glass article contains a component that emits light having a wavelength of 380 nm in at least one of the first adhesive layer and the second adhesive layer. The wavelength-selective permeable laminated glass according to any one of claims 21 to 23, wherein at least one of the first subsequent layer and the second subsequent layer of the wavelength selective permeable glass article has a wavelength of 360 nm The transmittance is 50% or more. The wavelength-selective permeable laminated glass according to any one of claims 21 to 24, wherein at least one of the first bonding layer and the second bonding layer of the wavelength selective permeable glass article has an absorption wavelength of less than 360 nm The composition of the light. The wavelength-selective permeable laminated glass according to any one of claims 21 to 24, wherein at least one of the first back layer and the second back layer of the wavelength selective permeable glass article has a reflection wavelength of less than 360 nm The composition of the light. The wavelength-selective permeable laminated glass according to any one of claims 21 to 26, wherein the surface of the indoor side of the second glass sheet has a light-scattering surface. The wavelength-selective permeable laminated glass according to any one of claims 21 to 26, wherein the second glass plate is embossed glass, frosted glass or a glass with a light-scattering film. The wavelength-selective permeable laminated glass according to any one of claims 1 to 28, wherein the light direction conversion sheet has a concavo-convex structure, and the concave portion of the uneven structure is filled with a filler. A building in which a wavelength selective permeable laminated glass according to any one of claims 1 to 29 is provided as a window member at an opening formed in a wall.