Global Patent Index - EP 1217644 A1

EP 1217644 A1 20020626 - Short arc high pressure discharge lamp for use in digital projection techniques

Title (en)

Short arc high pressure discharge lamp for use in digital projection techniques

Title (de)

Kurzbogen-Hochdruckentladungslampe für digitale Projektionstechniken

Title (fr)

Lampe à décharge à haute pression et à arc court utilisée pour la projection d'images codées sous forme numérique

Publication

EP 1217644 A1 20020626 (DE)

Application

EP 01127159 A 20011115

Priority

DE 10063938 A 20001220

Abstract (en)

[origin: CA2365357A1] In a short-arc high-pressure discharge lamp (1) with a xenon fill for digital projection purposes, the separation L in mm of the two mutually facing end sections (6a, 8c) of the cathode (6) and the anode (8) when the lamp is hot is given by the relationship 0.8.times.P .ltoreq. L .ltoreq. 1.times.P+1, where P is the lamp power in kW . Further, the diameter D of the circular-cylindrical middle section (8a) of the anode (8) in mm obeys the relationship D .gtoreq. 2.1.times.L+10.

Abstract (de)

Bei einer Kurzbogen-Hochdruckentladungslampe (1) mit einer Xenonfüllung für digitale Projektionszwecke ist der Abstand L in mm der beiden einander zugewandten Endabschnitte (6a, 8c) von Kathode (6) und Anode (8) im Heißzustand der Lampe durch die Relation 0,8 x P <= L <= 1 x P + 1 gegeben, wobei P die Lampenleistung in kW ist. Außerdem folgt der Durchmesser D des kreiszylindrischen Mittelabschnitts (8a) der Anode (8) in mm der Relation D >= 2,1 x L + 10. <IMAGE>

IPC 1-7

H01J 61/073

IPC 8 full level

H05B 41/16 (2006.01); H01J 61/073 (2006.01); H01J 61/86 (2006.01); H01J 61/88 (2006.01)

CPC (source: EP KR US)

H01J 61/073 (2013.01 - EP US); H01J 61/86 (2013.01 - KR)

Citation (applicant)

DE 20005764 U1 20000608 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]

Citation (search report)

  • [A] EP 0901151 A1 19990310 - MATSUSHITA ELECTRONICS CORP [JP]
  • [A] EP 0704881 A2 19960403 - USHIO ELECTRIC INC [JP]
  • [A] DE 3716485 C1 19881124 - HERAEUS GMBH W C
  • [A] DE 2122122 A1 19711125 - WESTINGHOUSE ELECTRIC CORP
  • [A] EP 0973187 A1 20000119 - USHIO ELECTRIC INC [JP]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 01 31 January 1996 (1996-01-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 08 29 August 1997 (1997-08-29)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 08 29 August 1997 (1997-08-29)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 1217644 A1 20020626; EP 1217644 B1 20090107; CA 2365357 A1 20020620; CA 2365357 C 20101026; CN 1316550 C 20070516; CN 1360333 A 20020724; DE 10063938 A1 20020704; DE 50114638 D1 20090226; JP 2002260589 A 20020913; JP 4261795 B2 20090430; KR 20020050177 A 20020626; TW 527623 B 20030411; US 2002074943 A1 20020620; US 6573657 B2 20030603

DOCDB simple family (application)

EP 01127159 A 20011115; CA 2365357 A 20011218; CN 01143360 A 20011220; DE 10063938 A 20001220; DE 50114638 T 20011115; JP 2001382587 A 20011217; KR 20010081627 A 20011220; TW 90128906 A 20011122; US 1350301 A 20011213