(19)
(11) EP 0 660 376 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.11.1996 Bulletin 1996/48

(43) Date of publication A2:
28.06.1995 Bulletin 1995/26

(21) Application number: 94309544.8

(22) Date of filing: 20.12.1994
(51) International Patent Classification (IPC)6: H01J 65/04
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 31.03.1994 US 220862
22.12.1993 GB 9326123

(71) Applicant: GENERAL ELECTRIC COMPANY
Schenectady, NY 12345 (US)

(72) Inventors:
  • Roberts, Victor David
    Burnt Hills, New York 12027 (US)
  • El-Hamamsy, Sayed-Amr Ahmes
    Schenectady, New York 12308 (US)
  • Taubert, Timothy Alan
    Kirtland, Ohio 44094 (US)
  • Mieskoski, James Dominic
    Seven Hills, Ohio 44131 (US)
  • Everest, Steven
    Schenectady, N.Y. 12309 (US)
  • Antonis, Basil
    London N2 9LY (GB)

(74) Representative: Pratt, Richard Wilson et al
London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street
London WC2R 3AA
London WC2R 3AA (GB)

   


(54) Electrodeless lamp


(57) An electrodeless lamp (e.g., an electrodeless fluorescent lamp (30)) indudes a dielectric housing (32) shaped to conform to a portion of a lamp envelope (12), which housed portion is opposite to a portion (36) through which light is emitted. The dielectric housing (32) includes a continuous conductor, i.e., a shorted turn (40), situated between the dielectric housing (32) and the lamp envelope (12) which conforms to at least a portion of the dielectric housing (32). The configuration of the shorted turn (40), in terms of the location and amount of surface area occupied thereby, is optimized to minimize interaction between the excitation coil (14) and any metallic fixture and to avoid interfering with lamp starting and light output.






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