heat ray - a ray that produces a thermal effect

high beam - the beam of a car's headlights that provides distant illumination

light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"

moon ray, moon-ray, moonbeam - a ray of moonlight

sunbeam, sunray - a ray of sunlight

laser beam - a beam of light generated by a laser

low beam - the beam of a car's headlights that provides illumination for a short distance