GLASS FOR ILLUMINATION LAMP

摘要

Disclosed is a glass for an illumination lamp, which contains CeO2, can block an UN ray having a wavelength of 313 nm effectively, and has a high transparency. Also disclosed is a jacket for a fluorescent lamp, which uses the glass. Further disclosed is a method for production of the jacket. The glass comprises the following components (by mass): SiO2: 55-75%; B2O3: 11-25%; Al2O3: 0-10%; Li2O + Na2O + K2O: 3-13%; MgO: 0-30%; CaO: 0-30%; SrO: 0-30%; BaO: 0-30%; ZnO: 0-30%; CeO2: 0.3-10%; SnO2: 0.2-10%; TiO2: 0-0.3 (exclusive); and Cl2: 0-0.4%. ® KIPO & WIPO 2009