A lamp socket is an electrical component that is used to hold and connect a light bulb in a lighting fixture. It is typically made of metal and has a threaded base that screws into the lamp fixture, and internal electrical contacts that make contact with the pins or prongs of the light bulb. Lamp sockets come in different shapes and sizes, and can be designed to accommodate different types of light bulbs, including incandescent, fluorescent, and LED bulbs. The lamp socket is an essential component of a lighting fixture, as it provides the electrical connection necessary to power the light bulb. Some lamp sockets also include features such as an on-off switch, a dimmer switch, or a harp and finial, which can be used to adjust the height and angle of the lamp shade.