ULTRAVIOLET ABSORBING AND YELLOW LIGHT FILTERING GLASSES FOR LAMP ENVELOPES
Application 1172/MUM/2004 published 2006-06-09, filed 2004-11-01
The present invention is directed at a family of glasses capable of absorbing UV radiation and filtering yellow light in the visible region of the spectrum, the family of glasses having a composition consisting essentially, in terms of weight percent on the oxide basis; of: 55-95.7% SiO2, 0-28% B2O3, 0.5-18%, Al2O3, 0-4% SrO,0-13% BaO, 0-13% CaO, 0-8% MgO, 0-7.5% Na2O, 0-9.5% K2O, 0-1.5% Li2O,0-1.5% Sb2O3,0.4-4.5% Nd2O3, and 0.1-1% CeO2. Glasses of the present invention are capable of employment as envelopes for tungsten-halogen lamps and other high temperature light sources, as well as sealed-beam incandescent headlights. Drawing: 02 Sheets. Total Pages: 16. Fig. Nil
Applicant
CORNING INCORPORATED
THE STATE OF NEW YORK, UNITED STATES OF AMERICA, OF HOUGHTON PARK, CORNING, NEW YORK 14831, U.S.A.
Inventor
1. RICHARD HERBERT CRANE 2. LAURA OSCSODAL 3. WILLIAM LLOYD 4. RONALD LEROY STEWART
International Info
Classification: B 31B 5/26, 17/04, C03C 25/42
Priority Information
60/106,574 U.S.A. 1998-11-02