EP 0127928 B1 19880824 - METHOD OF DOSING THE ARC TUBE OF AN UNSATURATED HIGH PRESSURE SODIUM LAMP
Title (en)
METHOD OF DOSING THE ARC TUBE OF AN UNSATURATED HIGH PRESSURE SODIUM LAMP
Publication
Application
Priority
US 47389383 A 19830310
Abstract (en)
[origin: EP0127928A1] An unsaturated vapor type high pressure sodium lamp and fabrication process includes an arc tube within an evacuated envelope and a dosage of amalgam, selected from a plurality of doses, located within the arc tube whereby the lamp dosage has a deviation less than the deviation obtainable with single doses. The lamp is fabricated by selecting and depositing multiple doses having a standard deviation into an arc tube to provide a dosage of reduced deviation with respect to the standard deviation of single doses.
IPC 1-7
IPC 8 full level
H01J 9/395 (2006.01); H01J 61/28 (2006.01)
CPC (source: EP)
H01J 9/395 (2013.01)
Citation (examination)
- US 3384798 A 19680521 - KURT SCHMIDT
- "Facts from figures", M.J. Moroney, Penguin Books 1951
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0127928 A1 19841212; EP 0127928 B1 19880824; AU 2546984 A 19840913; AU 578236 B2 19881020; CA 1222275 A 19870526; DE 3473684 D1 19880929; JP S59169049 A 19840922
DOCDB simple family (application)
EP 84301614 A 19840309; AU 2546984 A 19840309; CA 448956 A 19840306; DE 3473684 T 19840309; JP 4415484 A 19840309