Patent ID: 6111344
Filing Date: 2000-08-29
Classification: H01K

Abstract:
An electric incandescent lamp, in particular a halogen incandescent lamp (9), having a rotationally symmetrical lamp bulb (2; 10) which has a longitudinal axis and an ellipsoidal partial contour and in it which a wall surface is provided with a layer (14) which reflects IR radiation, and having a rotationally symmetrical luminous element (4; 15) which is arranged axially inside the lamp bulb (2; 10) and held by means of two supply leads (16a, 16b), the two supply leads (16a, 16b) being guided outward in a gas-tight fashion on one or on both sides of the lamp bulb (10) by means of one or, possibly, two seals (12), wherein the ellipsoidal partial contour of the lamp bulb (2; 10) is produced by a segment (3) of an ellipse whose semimajor axis a and, consequently, whose focal axis (F.sub.1 F.sub.2 ) is orientated perpendicular to the longitudinal axis, that is to say perpendicular to the rotation axis (RA) of the lamp bulb (2; 10).