An automotive headlight. The lens, reflector and filament form a single unit.
A headlight design where the lens, reflector, and bulb are all one unit. Sealed beams are secured in a housing within the front grille of the vehicle call a "headlight bucket."
A sealed beam is a type of lamp that includes a reflector and filament as a single assembly, over which a front cover (lens), usually of clear glass, is permanently attached.