Glass plate and window
AssigneeAGC Inc.
InventorsEriko Maeda, Takato Kajihara, Kensuke Nagai, Yutaka Kuroiwa, Osamu Kagaya, Ryuta Sonoda, Hiroyuki Hijiya
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Abstract
To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
Claims21
A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness,
- wherein the glass plate contains, as represented by mol % based on oxides, the following components in the following contents:
- 55≤SiO2≤75
- 1.3≤Al2O3≤3.35
- 0≤B2O3≤15
- 0≤MgO≤2.6
- 0≤CaO≤20
- 0≤SrO≤4
- 0≤BaO≤15
- 0≤Li2O≤0.01
- 0.1≤Na2O≤16
- 1≤K2O≤16
- 0≤ZrO2≤2
- 0.001≤Fe2O3≤5
- 0.001≤TiO2≤1.5
- 1.1≤R2O≤20
- 0≤RO≤20
- 85≤SiO2+Al2O3+MgO+CaO+SrO+BaO+Li2O+Na2O+K2O+Fe2O3+TiO2≤100
- 9.1≤7Al2O3+3MgO≤23.5
- 0.05≤Na2O/R2O≤0.8
- 1.1≤R2O+B2O3≤22
- 0≤PbO<0.001
- 0≤ZnO≤8,
- wherein R2O is a total content of alkali metal oxides, and RO is a total content of MgO, CaO, SrO and BaO, and
- the glass plate has a NiO content of 0 mass ppm to 100 mass ppm.
Dependencies are inferred from the claim text.