Title:
IR ABSORBING GLASS AND GLASS TUBE FOR FLUORESCENT LAMP BY USING THAT GLASS
Document Type and Number:
Japanese Patent JP3925897
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a glass tube for a fluorescent lamp which has enough resistance against solarization by UV rays and which does not transmit harmful UV rays.
SOLUTION: The glass consists of borosilicate glass containing, by mass%, 0.001 to 0.05% Fe2O3, 0.05 to 3% Sb2O3 and 0.01 to 3% ZrO2 and having 46 to 57×10-7/°C average coefficient of linear expansion in the temperature range from 50°C to the glass transition temperature (Tg). The transmittance of the glass with 1 mm thickness for the light at 253.7 mm wavelength is ≤1%, and the deterioration degree by specified UV irradiation test is ≤3%.
Inventors:
Nobuo Inuzuka
Maya Sano
Maya Sano
Application Number:
JP2000206562A
Publication Date:
June 06, 2007
Filing Date:
July 07, 2000
Export Citation:
Assignee:
Asahi Techno Glass Co., Ltd.
International Classes:
C03C4/08; C03C3/093; H01J61/30; (IPC1-7): C03C4/08; C03C3/093; H01J61/30
Domestic Patent References:
| JP6092677A | ||||
| JP9077529A | ||||
| JP9110467A | ||||
| JP2001220175A |