EP 0856871 A1 19980805 - Fluorescent lamp
Title (en)
Fluorescent lamp
Title (de)
Phosphorlampe
Title (fr)
Lampe fluorescente
Publication
Application
Priority
EP 97101366 A 19970129
Abstract (en)
First and second phosphor coatings composed of one or more types of phosphor are layered on the inner surface of the glass bulb of a fluorescent lamp. The first phosphor coating on the glass bulb side is composed of a phosphor which has a long afterglow property and is applied at 0.2 mg per 1 cm<2>, and the second phosphor coating is composed of a halophosphate phosphor or rare-earth phosphor. The phosphor coating having a long afterglow property may include, for example, a europium-activated strontium aluminate phosphor. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 61/42 (2006.01); H01J 61/44 (2006.01); H01J 61/48 (2006.01)
CPC (source: EP)
H01J 61/42 (2013.01); H01J 61/44 (2013.01); H01J 61/48 (2013.01)
Citation (search report)
- [A] US 4705986 A 19871110 - IWAMA KATSUAKI [JP], et al
- [A] EP 0710709 A1 19960508 - NEMOTO TOKUSHU KAGAKU KK [JP]
- [A] EP 0622440 A1 19941102 - NEMOTO TOKUSHU KAGAKU KK [JP]
- [A] DATABASE WPI Section Ch Week 9322, Derwent World Patents Index; Class L03, AN 93-178281, XP002034091
- [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 594 (E - 867) 27 December 1989 (1989-12-27)
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 101 (E - 1177) 12 March 1992 (1992-03-12)
- [A] DATABASE WPI Section Ch Week 7737, Derwent World Patents Index; Class L03, AN 77-65871Y, XP002034092
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97101366 A 19970129