EP 0054959 A1 19820630 - Beam mode fluorescent lamp.
Title (en)
Beam mode fluorescent lamp.
Title (de)
Strahlungs-Fluoreszenzlampe.
Title (fr)
Lampe fluorescente à rayons.
Publication
Application
Priority
US 21956480 A 19801223
Abstract (en)
A beam mode fluorescent lamp for general lighting applications. A light transmitting envelope (10), having a phosphor coating (12) on its inner surface, encloses a cathode (14) for emitting electrons, an anode (16) for accelerating the electrons and forming an electron beam, and a fill material, such as mercury, which emits ultraviolet radiation upon excitation. The anode (16) is spaced apart from the cathode (14) by a distance which is less than the electron range in the fill material and has a structure which permits the electron beam (22) to pass therethrough. The electron beam causes excitation of the fill material and emission of ultraviolet radiation in a relatively field-free drift region (20) havin a dimension which is greater than the electron range. The phosphor coating (12) absorbs the ultraviolet radiation and emits visible light.
IPC 1-7
IPC 8 full level
H01J 63/06 (2006.01); H01J 63/08 (2006.01)
CPC (source: EP)
H01J 63/06 (2013.01)
Citation (search report)
- US 4010400 A 19770301 - HOLLISTER DONALD D
- US 4117378 A 19780926 - GLASCOCK JR HOMER H
- US 4119889 A 19781010 - HOLLISTER DONALD D
- US 4171503 A 19791016 - KWON YOUNG D [US]
- US 4189661 A 19800219 - HAUGSJAA PAUL O [US], et al
- US 4093893 A 19780606 - ANDERSON JOHN M
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 81110674 A 19811222; JP 20626681 A 19811222