Downlight

A Downlight is aslo known as Recessed Light or pot Light, and sometimes Can Light [for canister light] in American English, is a Light Fixture that is installed into a hollow opening in a Ceiling. When installed it appears to have Light shining from a hole in the Ceiling, concentrating the Light in a downward direction as a broad Floodlight or narrow Spotlight. There are two types of Light Bulbs for Recessed Light, so you can see directional Lamp and diffuse Lamp.