Anisotropic incandescent light source
OwnerIstvan MUDRA, Laszlo Nagy +1inventors
InventorsIstvan MUDRA, Laszlo Nagy, Jozsef Gallai
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Abstract
An improved incandescent light source as may be used in a vehicle headlamp for providing forward illumination. The illuminating system includes a filament coil and an anisotropic reflector assembly. The filament coil is constructed from a coil of wire that is electrically conductive and has a high melting point and the primary axis of the coil of wire is substantially aligned with a principal axis of the reflector system. The light flux emitted by the filament coil toward the reflector system is rotationally anisotropic.
Claims23
An illuminating system, comprising:
- an anisotropic filament coil comprising a coil of wire that is electrically conductive and that as a longitudinal axis;
- and
- an anisotropic reflector assembly having a principal axis,
- wherein the longitudinal axis of the coil of wire is substantially aligned with the principal axis of the anisotropic reflector assembly, and
- wherein a light flux emitted by the anisotropic filament coil toward the anisotropic reflector assembly is rotationally anisotropic.
An incandescent lamp, comprising:
- an anisotropic filament coil;
- a substantially transparent envelope enclosing the filament coil, the envelope having a first end and a second end;
- and
- a cap fixedly attached to the first end of the envelope,
- wherein the filament coil comprises a coil of wire that is electrically conductive, and wherein a light flux emitted by the coil of wire is rotationally anisotropic, and
- the cap is configured to hold the anisotropic filament coil in a fixed orientation such that a longitudinal axis of the coil of wire is substantially aligned with a principal axis of an anisotropic reflector assembly.
An automotive headlamp assembly, the assembly comprising:
- an incandescent lamp;
- an anisotropic reflector assembly having a principal axis;
- and
- a housing,
- wherein the lamp comprises:
- an anisotropic filament coil;
- a substantially transparent envelope enclosing the filament coil, the envelope having a first end and a second end;
- and
- a cap fixedly attached to the first end of the envelope,
- wherein the anisotropic filament coil comprises a coil of wire that is electrically conductive, and wherein a light flux emitted by the coil of wire toward the anisotropic reflector assembly is rotationally anisotropic, and
- wherein the cap is removably coupled to the housing and configured to hold the anisotropic filament coil in a fixed orientation within the anisotropic reflector assembly such that longitudinal axis of the coil of wire is substantially aligned with a principal axis of the anisotropic reflector assembly.
Dependencies are inferred from the claim text.