EP 1050067 B1 20040407 - ELECTRIC INCANDESCENT LAMP WITH INFRARED REFLECTING LAYER
Title (en)
ELECTRIC INCANDESCENT LAMP WITH INFRARED REFLECTING LAYER
Title (de)
ELEKTRISCHE GLÜHLAMPE MIT IR-REFLEXIONSSCHICHT
Title (fr)
LAMPE A INCANDESCENCE ELECTRIQUE DOTEE D'UNE COUCHE A REFLEXION INFRAROUGE
Publication
Application
Priority
- DE 9902897 W 19990913
- DE 19844519 A 19980928
Abstract (en)
[origin: US6424089B1] Electrical incandescent lamp, in particular a halogen incandescent lamp (4) having a lamp bulb (5) which has a coating (9) that reflects IR radiation, and having a flat luminous body (10) which defines a fictional plane of the light and is arranged inside the lamp bulb (5). The shape of the lamp bulb (5) with respect to those axes which lie in the plane of the light have no rotational symmetry, but the lamp bulb (5) in fact has a shape which differs from rotational symmetry but is matched to the flat geometry of the luminous body (10), that is to say a flattened shape, in particular the shape of an ellipsoid, whose shortest half-axis is oriented at right-angles to the fictional plane of the light of the luminous body (10).
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
H01K 1/32 (2013.01 - KR); H01K 1/325 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6424089 B1 20020723; AT E264006 T1 20040415; CA 2311941 A1 20000406; DE 19844519 A1 20000406; DE 19844519 C2 20000803; DE 59909116 D1 20040513; DK 1050067 T3 20040510; EP 1050067 A1 20001108; EP 1050067 B1 20040407; JP 2002526896 A 20020820; JP 4567196 B2 20101020; KR 100527331 B1 20051109; KR 20010032533 A 20010425; WO 0019489 A1 20000406
DOCDB simple family (application)
US 55488000 A 20000522; AT 99969839 T 19990913; CA 2311941 A 19990913; DE 19844519 A 19980928; DE 59909116 T 19990913; DE 9902897 W 19990913; DK 99969839 T 19990913; EP 99969839 A 19990913; JP 2000572898 A 19990913; KR 20007005776 A 20000526