A reflector can mean one of several things: Science Reflector, a device that causes reflection (for example, a mirror or a retroreflector) Reflector (photography), used to control lighting contrast Reflecting telescope Reflector (antenna), the part of an antenna that reflects radio waves Reflector (cipher machine), a component of some rotor machines (a type of cipher machine), such as the Enigma machine, that sends electrical impulses that've reached it from the machine's rotors, back in re… (More on Reflector)