GLASS PLATE WITH ANTIREFLECTION FILM

• Main Authors: AOMINE NOBUTAKA, SUZUKI KENICHI, KAWAHARA HIROTOMO
• Format: Patent
• Language: English; Japanese
• Published: 08.06.2017
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

PROBLEM TO BE SOLVED: To provide a glass plate with an antireflection film that has good appearance performance even when heating the glass plate in a state of having the film thereon and can be usable for various kinds of applications.SOLUTION: The glass plate 10 with an antireflection film comprises a glass plate 10, a first transparent high refractive index layer 20 formed on the glass plate 10, a first transparent low refractive index layer 30 formed on the first transparent high refractive index layer 20, a second transparent high refractive index layer 40 formed on the first transparent low refractive index layer 30, and a second transparent low refractive index layer 50 formed on the second transparent high refractive index layer 40, has a haze after heating at 600°C to 700°C for 15 minutes of 0.4% or less and a visible light reflectance of 1.0% or less as measured from the side of the second transparent low refractive index layer 50 in accordance with JISR3106. The first transparent high refractive index layer 20 comprises titanium oxide doped with zirconium oxide at concentration of 27 to 50 mol% and the first and second transparent low refractive index layers 30 and 50 are composed mainly of silicon oxide.SELECTED DRAWING: Figure 1 【課題】膜が付いた状態で加熱をしても外観性能が良く、様々な用途に使用可能な反射防止膜付きガラス板の提供。【解決手段】ガラス板１０と、ガラス板１０上に設けられた第１の透明高屈折率層２０と、第１の透明高屈折率層２０上に設けられた第１の透明低屈折率層３０と、第１の透明低屈折率層３０上に設けられた第２の透明高屈折率層４０と、第２の透明高屈折率層４０上に設けられた第２の透明低屈折率層５０とを備え、６００℃〜７００℃で１５分加熱した後のヘイズが０．４％以下かつ、ＪＩＳＲ３１０６に基づいて、第２の透明低屈折率層５０の側から測定される可視光反射率が１．０％以下である反射防止膜付きガラス板１０。第１の透明高屈折率層２０は、ジルコニウム酸化物が２７〜５０モル％の濃度でドープされたチタン酸化物からなり、第１及び第２の透明低屈折率層３０，５０は、シリコン酸化物を主体とする反射防止膜付きガラス板。【選択図】図１