[go: up one dir, main page]

WO2025074850A1 - Verre feuilleté - Google Patents

Verre feuilleté Download PDF

Info

Publication number
WO2025074850A1
WO2025074850A1 PCT/JP2024/033016 JP2024033016W WO2025074850A1 WO 2025074850 A1 WO2025074850 A1 WO 2025074850A1 JP 2024033016 W JP2024033016 W JP 2024033016W WO 2025074850 A1 WO2025074850 A1 WO 2025074850A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
intermediate layer
laminated glass
main surface
refractive index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/033016
Other languages
English (en)
Japanese (ja)
Inventor
秀雄 光武
大地 岩澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of WO2025074850A1 publication Critical patent/WO2025074850A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres

Definitions

  • This disclosure relates to laminated glass.
  • Laminated glass in which two sheets of glass are bonded together with an intermediate layer, is used in the windows of vehicles and buildings. Recently, technology has been developed that uses a light source such as a light-emitting diode (LED) to introduce light into the inside of the laminated glass from its edge, and then uses a scattering layer on the laminated glass to extract the light to the outside of the laminated glass.
  • a light source such as a light-emitting diode (LED)
  • a technology has been developed in which light is introduced into the laminated glass from the edge of the laminated glass using a light source such as an LED, and the light is extracted to the outside of the laminated glass using a scattering layer provided on the laminated glass.
  • some laminated glass uses a light-absorbing intermediate layer as the intermediate layer of the laminated glass in order to reduce the proportion of sunlight that enters the vehicle from the outside.
  • light is introduced into such laminated glass with a light-absorbing intermediate layer using an LED or the like, there is a problem that the introduced light is absorbed by the light-absorbing intermediate layer, and the light does not propagate far inside the laminated glass.
  • the thickness of each of the first and second glass plates 11, 12 is, for example, 0.1 mm to 10 mm, and from the viewpoint of resistance to flying stone impact, 0.3 mm to 3.0 mm is preferable, 1.1 mm to 2.6 mm is more preferable, and 1.7 mm to 2.1 mm is even more preferable.
  • the thickness of the first and second glass plates 11, 12 may be the same as each other or may be different from each other.
  • the thickness of the first glass plate 11 arranged on the outside of the vehicle may be made thicker than the thickness of the second glass plate 12 arranged on the inside of the vehicle. In this way, when the thickness of the first glass plate 11 arranged on the outside of the vehicle is made thicker, the strength of the laminated glass 1a is improved against objects flying toward the laminated glass 1a.
  • the total thickness of the light absorbing intermediate layer 13 and the low refractive index intermediate layer 14 is preferably 0.76 mm or more and 2.00 mm or less.
  • the light absorbing intermediate layer 13 and the low refractive index intermediate layer 14 may be composed of a common resin material.
  • the laminated glass 1a becomes dark, causing reflections of light from inside the vehicle. This can make it difficult for the user to see the light extracted from the fourth main surface 24.
  • the visible light reflectance measured from the fourth main surface 24 side is low, making it easier for the user to see the light extracted from the fourth main surface 24.
  • the light scattering region 15 is provided between the light absorbing intermediate layer 13 and the low refractive index intermediate layer 14. Specifically, the light scattering region 15 is formed on the surface of the light absorbing intermediate layer 13 on the fourth principal surface 24 side, or on the surface of the low refractive index intermediate layer 14 on the first principal surface 21 side. The light scattering region 15 scatters the light 31 incident from the light source toward the fourth principal surface 24 side.
  • the light scattering region 15 is formed with a pattern that scatters light, and in the region 16 that does not scatter light, the light absorbing intermediate layer 13 and the low refractive index intermediate layer 14 are in direct contact with each other.
  • the light scattering pattern may be a scattering material containing inorganic or organic fine particles.
  • the difference in refractive index between the light-absorbing intermediate layer 13 and the low-refractive index intermediate layer 14 is 0.05 or more, so that preferably, most of the components of the light 31 are totally reflected at the interface between the light-absorbing intermediate layer 13 and the low-refractive index intermediate layer 14.
  • the laminated glass 1b according to this embodiment also provides the same effects as the laminated glass 1a according to the first embodiment.
  • a laminated glass 1c according to the third embodiment shown in Fig. 3 differs from the laminated glass 1a according to the first embodiment shown in Fig. 1 in that it does not include a low refractive index intermediate layer 14.
  • Other configurations are similar to those of the laminated glass 1a according to the first embodiment shown in Fig. 1, so the same components are denoted by the same reference numerals and duplicated descriptions will be omitted as appropriate.
  • the laminated glass 1c according to this embodiment also provides the same effects as the laminated glass 1a according to the first embodiment.
  • the laminated glasses of Examples 1 to 13 were produced by the following method.
  • Tables 1 and 2 show the configurations of the laminated glasses of Examples 1 to 13.
  • the first glass plate 11, the light absorbing intermediate layer 13, the low refractive index intermediate layer 14 with the light scattering region 15 (scattering layer), and the second glass plate 12 were laminated in this order, and this laminate was placed in a vacuum bag and bonded at a temperature of about 70°C to 110°C in a vacuum with a gauge pressure of -65 kPa to -100 kPa.
  • the bonded laminate was then heated and pressurized in an autoclave at a temperature of 100°C to 150°C and a pressure of 0.6 to 1.3 MPa to produce the laminated glass of Example 1.
  • the light scattering region 15 (scattering layer) was located at the interface between the low refractive index intermediate layer 14 and the second glass plate 12.
  • a light source was provided at the end of the second glass plate 12, and light 31 was introduced into the second glass plate 12.
  • Example 9 the first glass plate 11, the light absorbing intermediate layer 13, and the second glass plate 12 with the light scattering region 15 (scattering layer) were laminated in this order, and this laminate was placed in a vacuum bag and bonded at a temperature of about 70°C to 110°C in a vacuum with a gauge pressure of -65 kPa to -100 kPa. The bonded laminate was then heated and pressurized in an autoclave at a temperature of 100°C to 150°C and a pressure of 0.6 to 1.3 MPa to produce the laminated glass of Example 9. In Example 9, a light source was provided at the end of the second glass plate 12, and light 31 was introduced into the second glass plate 12.
  • Example 10 As the laminated glass of Example 10, a laminated glass was produced in which the light-scattering region 15 (scattering layer) of Example 9 was provided on the third main surface 23 of the second glass plate 12. The rest of the laminated glass was the same as that of Example 9. That is, the scattering pattern provided on the third main surface 23 of the second glass plate 12 was made of the same material and had the same design as the scattering pattern provided on the fourth main surface 24 of the second glass plate 12 in Example 9.
  • the refractive index difference between the light absorbing intermediate layer 13 (gray intermediate film) and the low refractive index intermediate layer 14 (clear intermediate film) was 0.05 or more.
  • the visible light transmittance measured from the fourth main surface 24 side was 30% or less, and the visible light reflectance measured from the fourth main surface 24 side was 15% or less.
  • Example 11 Focusing on the refractive index difference at a wavelength of 630 nm, the refractive index difference in Example 11 was 0.05, and in Example 12 it was 0.09. As a result, the evaluation of evaluation item 2 was good, with Example 11 receiving a "2" and Example 12 receiving a "1.” On the other hand, in Example 13, the refractive index difference at a wavelength of 630 nm was low at 0.03, and therefore the evaluation of evaluation item 2 was given a "3.”
  • Reference Signs 1a, 1b, 1c Laminated glass 11 First glass plate 12 Second glass plate 13 Light absorbing intermediate layer 14 Low refractive index intermediate layer 15 Light scattering region 16 Region other than light scattering region 21 First main surface 22 Second main surface 23 Third main surface 24 Fourth main surface 31 Light

Landscapes

  • Joining Of Glass To Other Materials (AREA)

Abstract

L'invention concerne un verre feuilleté comprenant une couche intermédiaire absorbant la lumière et étant apte à propager avec succès de la lumière à l'intérieur du verre feuilleté. Le verre feuilleté selon la présente divulgation comprend : une première plaque de verre (11) ayant une première surface principale (21) et une deuxième surface principale (22) ; une deuxième plaque de verre (12) ayant une troisième surface principale (23) et une quatrième surface principale (24) ; une couche intermédiaire absorbant la lumière (13) disposée entre la première plaque de verre (11) et la deuxième plaque de verre (12) ; et une région diffusant la lumière (15) disposée de manière à être plus proche du côté de la quatrième surface principale (24) que la couche intermédiaire absorbant la lumière (13). La région diffusant la lumière (15) diffuse la lumière (31) incidente d'une source de lumière au côté de la quatrième surface principale (24). La différence d'indice de réfraction entre la couche intermédiaire absorbant la lumière (13) et un élément en contact avec la couche intermédiaire absorbant la lumière (13) sur le côté de la quatrième surface principale (24) est de 0,05 ou plus. La réflectance de la lumière visible mesurée à partir du côté de la quatrième surface principale (24) est inférieure ou égale à 15 %. La transmittance de la lumière visible mesurée à partir du côté de la quatrième surface principale (24) dans une région autre que la région diffusant la lumière (15) est de 30 % ou moins.
PCT/JP2024/033016 2023-10-03 2024-09-17 Verre feuilleté Pending WO2025074850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023171722 2023-10-03
JP2023-171722 2023-10-03

Publications (1)

Publication Number Publication Date
WO2025074850A1 true WO2025074850A1 (fr) 2025-04-10

Family

ID=95283122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/033016 Pending WO2025074850A1 (fr) 2023-10-03 2024-09-17 Verre feuilleté

Country Status (1)

Country Link
WO (1) WO2025074850A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017512178A (ja) * 2014-02-10 2017-05-18 サン−ゴバン グラス フランス 光アイソレータを有する発光性グレージングユニット
WO2022096365A1 (fr) * 2020-11-05 2022-05-12 Saint-Gobain Glass France Vitrage
WO2023209206A1 (fr) * 2022-04-29 2023-11-02 Saint-Gobain Glass France Vitrage lumineux de vehicule et sa fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017512178A (ja) * 2014-02-10 2017-05-18 サン−ゴバン グラス フランス 光アイソレータを有する発光性グレージングユニット
WO2022096365A1 (fr) * 2020-11-05 2022-05-12 Saint-Gobain Glass France Vitrage
WO2023209206A1 (fr) * 2022-04-29 2023-11-02 Saint-Gobain Glass France Vitrage lumineux de vehicule et sa fabrication

Similar Documents

Publication Publication Date Title
JP7601011B2 (ja) ヘッドアップディスプレイシステム
US20240151892A1 (en) Illuminable glazing
US20250108587A1 (en) Arrangement with illuminable pane
US20240069337A1 (en) Laminated glass and head-up display system
US12162329B2 (en) Vehicle
US20250018688A1 (en) Laminated glass
WO2018105365A1 (fr) Plaque de guidage de lumière, appareil d'émission de lumière en surface et procédé de fabrication de plaque de guidage de lumière
JP2022130753A (ja) 合わせガラス
JP7643458B2 (ja) 車両用窓構造
JP7729346B2 (ja) 車両用窓ガラス及び車両用窓ガラスシステム
WO2025074850A1 (fr) Verre feuilleté
WO2022186338A1 (fr) Verre feuilleté et procédé de fabrication de verre feuilleté
US12392952B2 (en) Illuminated pane-like glass element having reduced emittance via the lateral edge
US11999136B2 (en) Laminated glass
JP2025519394A (ja) 赤外線検出システム用の積層窓
JP3225573U (ja) ミラースクリーン、及び投影システム
US20230364889A1 (en) Laminated glazing
CN116075416A (zh) 用于平视显示器的复合板
CN116897103A (zh) 涂覆的玻璃制品
WO2024204369A1 (fr) Verre feuilleté et son procédé de fabrication
JP2025097638A (ja) 車両用表示システム
US20250085471A1 (en) Illuminable glazing unit
WO2024225197A1 (fr) Verre feuilleté
JP2025126895A (ja) 合わせガラス
CN120503473A (zh) 夹层玻璃

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24874459

Country of ref document: EP

Kind code of ref document: A1