Invention Grant
- Patent Title: Halogen incandescent lamp
- Patent Title (中): 卤素白炽灯
-
Application No.: US12449010Application Date: 2008-02-12
-
Publication No.: US08011798B2Publication Date: 2011-09-06
- Inventor: Manfred Bühler , Hans Mayer , Klaus Wittmann , Sascha Zelt
- Applicant: Manfred Bühler , Hans Mayer , Klaus Wittmann , Sascha Zelt
- Applicant Address: DE München
- Assignee: OSRAM Gesellschaft mit beschränkter Haftung
- Current Assignee: OSRAM Gesellschaft mit beschränkter Haftung
- Current Assignee Address: DE München
- Agency: Holtz, Holtz, Goodman & Chick, P.C.
- Priority: DE102007008147 20070219
- International Application: PCT/EP2008/051640 WO 20080212
- International Announcement: WO2008/101832 WO 20080828
- Main IPC: F21K2/00
- IPC: F21K2/00

Abstract:
The invention relates to a halogen incandescent lamp for motor vehicle headlamps with two incandescent filaments (21, 22), which are arranged within a lamp vessel (10), wherein a first incandescent filament (21) is designed for operation with a higher electrical power than the second incandescent filament (22), wherein the incandescent filaments (21, 22) are constructed in such a way that their dimensions and/or their geometry are in each case matched to an operating voltage of at least 20 volts, and at least the second incandescent filament (22) is an incandescent filament in the form of a single coil. Preferably, both incandescent filaments (21, 22) are in the form of incandescent filaments with a single coil, wherein the first incandescent filament (21) is used, for example, for producing the upper beam or lower beam and the second incandescent filament (22) is used for producing the daytime driving light or foglight.
Public/Granted literature
- US20100060161A1 HALOGEN INCANDESCENT LAMP Public/Granted day:2010-03-11
Information query