Sealed-beam headlamp having seating abutment on the outside of concave reflector

To accurately position a halogen cycle incandescent lamp within a reflector to form a sealed-beam headlight, a carrier is provided for the lamp with a seating surface thereon, the lamp being accurately positioned and aligned with respect to the carrier and its seating surface by optical alignment outside of the reflector, the seating surface then being fitted against a matching abutment forming a locating surface on the reflector, the lamp-carrier subassembly being secured in the reflector, for example by form-fitting interengagement, adhesion, or the like. The reflector may have a large opening and the carrier in form of a disk, or smaller openings and the carrier in form of a ring inserted from the reflector end into the reflector.