04005330 is referenced by 53 patents and cites 7 patents.

An electrodeless fluorescent lamp adapted for economical substitution in place of an existing incandescent lamp comprises an ionizable medium contained within a phosphor coated globular envelope. A closed loop magnetic core transformer, contained within a reentrant cavity in the base of the envelope, induces a radio frequency electric field which ionizes the medium to stimulate production of visible light output from the phosphor. A tubular extension of the envelope traverses the cavity, linking the core with a column of ionizable medium, to form a "secondary winding" on the transformer. A base assembly, attached to the envelope, supports a lamp plug for receipt of input energy. A radio frequency power supply, contained within the base assembly, provides electric current to a primary winding on the core.

A method for producing lamps in accordance with the invention comprises preforming the reentrant cavity, threading the magnetic core and winding structure onto a tubular member; fusing that member to the cavity; and assembling the cavity structure to a phosphor coated, globular shell.

Title
Electrodeless fluorescent lamp
Application Number
542375
Publication Number
4005330
Application Date
December 18, 1975
Publication Date
January 25, 1977
Inventor
John M Anderson
Scotia
NY, US
Homer H Glascock Jr
Scotia
NY, US
Agent
Jerome C Squillaro
Joseph T Cohen
Jack E Haken
Assignee
General Electric Company
NY, US
IPC
H05B 41/24
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