Aerobeacon

An aerobeacon is a light assembly used to create a fixed or flashing signal visible over long distances.

They were far less expensive to manufacture and maintain than classic glass Fresnel lenses, and much more durable; they could be mounted and exposed to the weather.

Historic models include the DCB-24, which used a single parabolic reflector; the DCB-224, a double-beamed version of the DCB-24; and the DCB-36, which used a system of plastic Fresnel type lenses.

Manufacturers included Carlisle & Finch in Cincinnati and the Crouse-Hinds Company in Syracuse, New York.

Aerobeacons have replaced fragile glass Fresnel lenses in many lighthouses and are still widely used in other applications.