Abstract: A lamp 10 is described which may be used in an automotive headlight 12. The lamp 10 comprises at least one filament 20 within a transparent lamp vessel 16. A color filter portion 30 is provided through which light is emitted with a color change. The lamp vessel 16 further comprises a color transparent portion, through which light is emitted without a color change. The color transparent portion is arranged such that an illumination beam of light 40 is emitted through the color transparent portion to achieve a non-colored illumination. The color filter portion 30 is arranged such that only peripheral and/or scattered portions of light are emitted through the color filter portion to achieve a color appearance of the headlight 12 in operation of the lamp 10.

Abstract: An electric lamp having a lamp vessel and a base part. The base part has a mounting cavity. A partition member is provided between the cavity and an opening of the lamp vessel. The partition member has a thermal barrier coating which effectively isolates the heat-generating parts in the lamp vessel from the heat-sensitive parts in the base part.

Abstract: The electric lamp comprises a lamp vessel (1) having an end portion (3) which is surrounded by a shell portion (22) of a lamp cap (20) having screw thread. The end portion (3) has transversal indents (6). A plastic coupling member (30) having arms (33) bearing a cam (31) on their inner surface (34) and being undulated at their outer surface (35) is present in the lamp cap (20). The cams (31) are located in a respective indent (6). The shell portion (22) of the lamp cap (20) is screwed onto the coupling member (30). In the electric lamp, the lamp cap (20) is fitted to the lamp vessel (1) by assembling. The current conductors (7, 8) too may be connected to the contacts (21) of the lamp cap (20) by assembling, thus avoiding time and energy-consuming thermal processes.