Global Patent Index - EP 1032010 A4

EP 1032010 A4 20011128 - ANHYDROUS SILVER HALIDE LAMP

Title (en)

ANHYDROUS SILVER HALIDE LAMP

Title (de)

WASSERFREIE SILBERHALOGENIDLAMPE

Title (fr)

LAMPE A L'HALOGENURE D'ARGENT ANHYDRE

Publication

EP 1032010 A4 20011128 (EN)

Application

EP 99943295 A 19990910

Priority

  • JP 9904969 W 19990910
  • JP 26115598 A 19980916
  • JP 6473299 A 19990311
  • JP 21683099 A 19990730

Abstract (en)

[origin: EP1032010A1] A pair of electrodes 3 are provided in an arc tube 1. I/S is 20 (A/mm<2>) or less on a condition that an area of a cross section at a tip of the electrodes 3 is S (mm <2>) and an operating current between the electrodes 3 is I (A). According to this constitution, a long lamp life can be obtained without causing a rise in the lamp voltage and the blackening of the arc tube 1 by the evaporation of the electrodes while operation time becomes longer. <IMAGE>

IPC 1-7

H01J 61/073; H01J 61/82; H01J 61/12

IPC 8 full level

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

CPC (source: EP KR)

H01J 61/04 (2013.01 - KR); H01J 61/12 (2013.01 - EP); H01J 61/827 (2013.01 - EP); H01J 61/34 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 1032010 A1 20000830; EP 1032010 A4 20011128; CN 1277732 A 20001220; KR 20010024584 A 20010326; TW 429390 B 20010411; WO 0016360 A1 20000323

DOCDB simple family (application)

EP 99943295 A 19990910; CN 99801596 A 19990910; JP 9904969 W 19990910; KR 20007004945 A 20000506; TW 88115913 A 19990915