Electric incandescent lamp
AssigneePatent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
InventorThomas Noll
Life of this patent
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Abstract
The invention relates to an electric incandescent lamp having a lamp vessel (12), at least one filament (14) which is arranged in the lamp vessel (12) and comprises at least a filament element (15) for generating radiation in the infrared region and in the visible region, and at least one filter (35), which is applied at least partially to the light vessel (12), reflects radiation in the infrared region and is transparent in the visible region, at least for selected wavelengths of radiation, at least one filament element (15) being of flat, in particular strip-shaped construction. It also relates to a method for producing such an electric incandescent lamp. FIG. 5.
Claims23
Electric incandescent lamp comprising:
- a lamp vessel (12), at least one filament (14) which is arranged in the lamp vessel (12) and comprises at least one flat, strip-shaped filament element (15) for generating radiation in the infrared region and in the visible region, at least one filter (35, 35a, 35b) which is applied at least partially to the lamp vessel (12) and reflects radiation in the infrared region and is transparent to radiation in the visible region at least for selected wavelengths the filament (14) being connected to a clamping device (24) which holds the filament (14) clamped, a current path in the lamp, vessel (12) comprising at least one section (26) of variable length being connected to the filament (14).
Dependencies are inferred from the claim text.