Global Patent Index - EP 0183247 A3

EP 0183247 A3 19881019 - HIGH PRESSURE METAL HALIDE LAMP WITH XENON BUFFER GAS

Title (en)

HIGH PRESSURE METAL HALIDE LAMP WITH XENON BUFFER GAS

Publication

EP 0183247 A3 19881019 (EN)

Application

EP 85115070 A 19851127

Priority

US 67636784 A 19841129

Abstract (en)

[origin: EP0183247A2] High pressure xenon is used as a buffer gas in place of mercury in a high pressure sodium iodide arc discharge lamp. Xenon buffer gas has a more favorable influence than mercury on the sodium D-line spectrum and does not react with halides in the lamp fill. The use of xenon buffer gas increases the efficacy of the high pressure sodium iodide arc lamp.

IPC 1-7

H01J 61/12; H01J 61/82

IPC 8 full level

H01J 61/12 (2006.01); H01J 61/16 (2006.01); H01J 61/20 (2006.01); H01J 61/82 (2006.01)

CPC (source: EP)

H01J 61/125 (2013.01); H01J 61/825 (2013.01)

Citation (search report)

  • [A] FR 2147094 A1 19730309 - HOLOBEAM
  • [X] JOURNAL OF THE ILLUMINATING ENGINEERING SOCIETY, vol. 11, no. 3, April 1982, pages 140-146, New York, US; T. ISHIGAMI et al.: "The effect of rare gases on the luminous efficacy of metal halide lamps"
  • [X] APPLIED OPTICS, vol. 10, no. 11, November 1971, pages 2517-2520, New York, US; C.F. GALLO: "Continuum emission spectra form long linear xenon discharge lamps with metallic halide additives"
  • [X] JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, vol. 54, no. 4, April 1964, pages 532-540, G.H. REILING: "Characteristics of mercury vapor-metallic iodide arc lamps"
  • [A] PHILIPS TECHNICAL REVIEW, vol. 39, no. 8, 1980, Eindhoven, NL; C.A.J. JACOBS et al.: "A new generation of high-pressure sodium lamps"
  • [A] PATENT ABSTRACTS OF JAPAN, vol. 6, no. 21 (E-93)[899], 6th February 1982; & JP-A-56 143 650 (TOKYO SHIBAURA DENKI K.K.) 09-11-1981
  • [A] JOURNAL OF THE ILLUMINATING ENGINEERING SOCIETY, vol. 11, no. 4, July 1982, pages 231-240, New York, US; K. OTANI et al.: "A high pressure sodium lamp with improved color rendition"

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0183247 A2 19860604; EP 0183247 A3 19881019; BR 8506070 A 19860819; JP S61142654 A 19860630

DOCDB simple family (application)

EP 85115070 A 19851127; BR 8506070 A 19851126; JP 26630085 A 19851128