VEHICLE LAMP

The invention relates to a cover (20) for a lighting device (10), in particular for a lighting device of a motor vehicle headlamp, wherein the cover (20) comprises: an electrically activatable cover element (21A, 21B) that is switchable as a function of an applied electrical voltage between at least one light-transmissive state (21A) and a light-opaque state (21B) and that has an inner surface (15) and an outer surface (35), and a partially light-transmissive layer (22). The invention further relates to a lighting device (50), in particular a lighting device for a motor vehicle, comprising such a cover.