(19)
(11) EP 0 788 140 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.11.1997 Bulletin 1997/46

(43) Date of publication A2:
06.08.1997 Bulletin 1997/32

(21) Application number: 97100888.3

(22) Date of filing: 21.01.1997
(51) International Patent Classification (IPC)6H01J 61/16, H01J 65/04
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 01.02.1996 US 595475

(71) Applicant: OSRAM SYLVANIA INC.
Danvers, MA 01923 (US)

(72) Inventors:
  • Lapatovich, Walter P.
    Marlborough, MA 01752 (US)
  • Butler, Scott J.
    North Oxford, MA 01537 (US)
  • Bochinski, Jason R.
    Springfield, OR 97477 (US)

(74) Representative: Pokorny, Gerd 
OSRAM GmbH, Postfach 22 16 34
80506 München
80506 München (DE)

   


(54) Electrodeless high intensity discharge lamp having a boron sulfide fill


(57) An electrodeless high intensity discharge lamp including a sealed light-transmissive lamp envelope, a volatilizable chemical fill and an inert gas or nitrogen within the envelope. The primary active component of the fill is boron sulfide. The inert gas or nitrogen within the envelope assists in starting the lamp, and is at subatmospheric pressure. The lamp envelope is coupled to a high frequency power source to produce a light emitting plasma discharge within the envelope.







Search report