Title:
GLASS TUBE
Document Type and Number:
WIPO Patent Application WO/2023/100495
Kind Code:
A1
Abstract:
The glass tube according to the present invention has a thin wall portion having a thickness of at most 0.4 mm, and is characterized in that d1/D1 is at least 0.76 and the value of (Fe2O3 + TiO2) × T222 is at least 0.2, where t1 represents the thickness [mm] of a thinnest portion of the thin wall portion, T222 represents the spectral transmittance [%] with respect to a wavelength of 222 nm at said thickness t1 of the thinnest portion, D1 represents the outer diameter [mm] of the thinnest portion, d1 represents the inner diameter [mm] of the thinnest portion, and Fe2O3 + TiO2 represents the total amount [mass%] of iron oxide and titanium oxide contained in the glass.
Inventors:
ARAI SATOSHI (JP)
Application Number:
PCT/JP2022/038308
Publication Date:
June 08, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
C03C3/091; C03C21/00; H01J61/30
Domestic Patent References:
| WO2017163963A1 | 2017-09-28 | |||
| WO2020196171A1 | 2020-10-01 |
Foreign References:
| JP2018190686A | 2018-11-29 | |||
| JP2004068082A | 2004-03-04 | |||
| CN111825334A | 2020-10-27 | |||
| JP2008001586A | 2008-01-10 |
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