Title:
ULTRAVIOLET TRANSMISSION GLASS
Document Type and Number:
WIPO Patent Application WO/2021/090631
Kind Code:
A1
Abstract:
An ultraviolet transmission glass according to the present invention is characterized by having a glass composition containing, in mass%, 60-78% of SiO2, 1-25% of Al2O3, 10.8-30% of B2O3, 0-1.9% (exclusive of 1.9) of Li2O, 0-8% of Na2O, 1.6-8% of K2O, 1.6-10% of Li2O+Na2O+K2O, 0-1.9% (exclusive of 1.9) of BaO, 0-1.9% (exclusive of 1.9) of Li2O+BaO, and 0-1% of Cl, wherein said glass has a thickness of 0.5 mm and an external transmittance of 40% or more at a wavelength of 200 nm.
Inventors:
SUZUKI RYOTA (JP)
HASHIMOTO KOICHI (JP)
HASHIMOTO KOICHI (JP)
Application Number:
PCT/JP2020/038098
Publication Date:
May 14, 2021
Filing Date:
October 08, 2020
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
C03C3/091; C03C4/08
Domestic Patent References:
| WO2019167399A1 | 2019-09-06 |
Foreign References:
| JP2015193521A | 2015-11-05 | |||
| JP2010184816A | 2010-08-26 |
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