04568859 is referenced by 60 patents and cites 11 patents.

A discharge lamp having a sealed glass vessel filled with gas and a metal vapor, operated with a supply at a frequency of at least 20 kHz. An interference-suppressing conductive layer is arranged on a wall surface surrounding the discharge, and connected to an electric supply lead-in wire. Preferably, a plurality of insulated metal rings, on the outside of the wall, also surround the discharge.

Title
Discharge lamp with interference shielding
Application Number
6/563498
Publication Number
4568859
Application Date
December 20, 1983
Publication Date
February 4, 1986
Inventor
Pieter Postma
Eindhoven
NL
Jan W Denneman
Eindhoven
NL
Henk Houkes
Eindhoven
NL
Agent
Robert S Smith
Assignee
U S Philips Corporation
NY, US
IPC
H05B 41/16
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