UV-RADIATION ABSORBING GLASS FOR JACKETS OF LAMPS

• Main Authors: HAMMER EDWARD AUGENE, SCOTT CURTIS EDWARD, WELKER CHRISTOPHER HUGH, SOULES THOMAS FREDERICK, BUCHER GERALD L
• Format: Patent
• Language: English
• Published: 16.08.1995
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; ELECTROTHERAPY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GLASS; HUMAN NECESSITIES; HYGIENE; JOINING GLASS TO GLASS OR OTHER MATERIALS; MAGNETOTHERAPY; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MINERAL OR SLAG WOOL; RADIATION THERAPY; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; ULTRASOUND THERAPY

A UV absorbing soda-lime glass containing specific amounts of cerium oxide and iron oxide permits the use of significantly less Ce02 than is used in prior art glass. The amount of cerium oxide and iron oxide present is .02-.07 wt. % and 02-.06 wt. %, respectively, with a combined total typically no more than .13 wt. %. This glass is useful for fluorescent lamp envelopes in absorbing UVB radiation having a wavelength between 280-320 nm, while being transparent to visible light radiation without effecting the color of the light emitted by the lamp.