Lamp device, e.g. headlamp for vehicle, has symbol identifying vehicle punched in beam aperture plate, so that it is not visible when light source is switched on

摘要

The lamp includes at least one light source and a beam aperture plate (3). A symbol (4) that identifies the vehicle and/or the lamp is punched or pressed into the beam aperture plate. The lamp device is a headlamp, and the light source is a halogen lamp or gas discharge lamp. The symbol is not or scarcely visible when the light source is switched on, and clearly identifiable when it is switched off. The beam aperture plate is made of metal. An independent claim is included for a method of manufacturing a beam aperture plate for a lamp device.