EP 2172961 A1 20100407 - Luminous vessels for high luminance discharge lamps
Title (en)
Luminous vessels for high luminance discharge lamps
Title (de)
Entladungsgefäss für Entladungslampen hoher Intensität
Title (fr)
Récipients lumineux pour lampes à décharge haute luminance
Publication
Application
Priority
JP 2008226796 A 20080904
Abstract (en)
An object of the present invention is to improve the color temperature stability of light emission and maintain durability when repeating light-on and light-off, while narrowing light emission from the light-emitting vessel. A light-emitting container 1 for a high intensity discharge lamp includes: a light-emitting vessel 7 of a translucent polycrystalline ceramics having a substantially constant linear transmittance in a visible light region and having a central light-emitting portion 7e, thick portions 7d provided on both sides of the central light-emitting portion 7e and thicker than the central light-emitting portion 7e, respectively, and side end portions 7c provided on outer sides of the thick portions 7d, respectively; tubular portions 3 protruded from the side end portions, respectively; electrodes 5 provided in the inner space of the light-emitting vessel; electrode holding members 2 inserted through the tubular portions and holding the electrodes, respectively; a sealing material 4 sealing a space between the tubular portion and electrode holding member; and light-shielding films 11 for coating the outer surface 7b of the thick portions over full-circumference around a tube axis of the light-emitting vessel. The outer surfaces of the central light-emitting portion 7e, the side end portions 7c and the tubular portions 3 are not coated with the light-shielding film.
IPC 8 full level
H01J 61/30 (2006.01); H01J 61/35 (2006.01); H01J 61/86 (2006.01)
CPC (source: EP)
H01J 61/302 (2013.01); H01J 61/35 (2013.01); H01J 61/86 (2013.01)
Citation (applicant)
- EP 0869540 A1 19981007 - GEN ELECTRIC [US]
- JP H10335059 A 19981218 - GEN ELECTRIC
- US 5708328 A 19980113 - MATHEWS PAUL G [US], et al
- JP 2006093045 A 20060406 - TOSHIBA LIGHTING & TECHNOLOGY
- JP 2004006198 A 20040108 - NGK INSULATORS LTD
Citation (search report)
- [A] WO 2004023517 A1 20040318 - KONINKL PHILIPS ELECTRONICS NV [NL], et al
- [A] US 2004056600 A1 20040325 - LAPATOVICH WALTER P [US], et al
- [A] US 2006108927 A1 20060525 - GUNTHER KLAUS [DE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2172961 A1 20100407; EP 2172961 B1 20110413; AT E505809 T1 20110415; DE 602009001080 D1 20110526; JP 2010062010 A 20100318; JP 5243153 B2 20130724
DOCDB simple family (application)
EP 09169339 A 20090903; AT 09169339 T 20090903; DE 602009001080 T 20090903; JP 2008226796 A 20080904