发明名称 |
High intensity discharge lamp with ultra violet absorbing envelope |
摘要 |
An electric arc discharge lamp has an arc discharge light source which emits both visible light radiation and UV radiation enclosed within a borosilicate, outer glass envelope. The envelope has a transmission of greater than 90% at a wavelength of 425 nm and a transmission of not more than 40% of UV radiation at 320 nm; 8% of UV radiation at 300 nm; and 0.5% of UV radiation at 290 nm. The borosilicate glass comprises, in weight percent: from about 3.89% Na2O; about 1.5% K2O; from 0.0% to about 0.15% Li2O; about 17% B2O3; about 1.4% Al2O3; about 0.6% CaO; about 0.35% MgO; about 0.13% Fe2O3; and the balance SiO2.
|
申请公布号 |
US5557171(A) |
申请公布日期 |
1996.09.17 |
申请号 |
US19950490877 |
申请日期 |
1995.06.15 |
申请人 |
OSRAM SYLVANIA INC. |
发明人 |
MARLOR, RICHARD C.;BIDDULPH, R. BRUCE |
分类号 |
C03C3/091;C03C3/093;C03C4/08;H01J61/30;(IPC1-7):H01J17/16 |
主分类号 |
C03C3/091 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|