👉 A catadioptric device is a type of optical device that allows for the viewing of an object from a distance, without the need to use a lens. This device works by using a lens or other optical system to focus light onto a screen or other surface, allowing the user to see an image or picture at a distance. The term "catadioptric" refers to the fact that it is a type of optical device that works on the principle of focusing light directly onto a