Abstract: A bulbholder which is intended for accurately positioning a filament of a bulb, particularly a quartz halogen bulb, relative to a lamp reflector comprises a sheet metal body which receives a base of the bulb. A plurality of deformable legs in the form of loops serve to connect the body with a pair of flanges on opposite sides of the body. The flanges are fixed to a support and accurate positioning of the bulb filament is effected by moving the body relative to the flanges as permitted by deformation of the legs.In one embodiment, the flanges are apertured and are rivetted to a ceramic support. In another embodiment, the flanges have arcuate lipped edges which are brazed to an annular surface on the support.

Abstract: A filament shield comprising a body with a recess therein. The recess has a base, which may be planar and from which the filament to be shielded is spaced, and is bounded on two opposed edges by a pair of surfaces. Each of these surfaces has a linear inner edge inclined with respect to an axis along which the filament lies and spaced therefrom, and an outer edge inclined to the axis at a greater angle than the respective inner edge.A lamp unit comprising a parabolic reflector and a filament shield as defined above, the filament shield being disposed so that the axis of the filament lies on the focal axis of the reflector.