Patent ID: 8128254

Claim:
A flush-mounted flashing light for approach guidance of aircraft, comprising: a housing which has a housing pot which can be inserted below ground level and a housing cover which covers this approximately at ground level, and; an optical system, which is arranged in the housing for controlled production and directed emission of light flashes, which comprises a light source for production of light flashes and a prism for varying the direction of the beam direction of the light flashes, with at least one light outlet opening being provided in the housing cover for light flashes to emerge from in a predetermined emission direction, wherein the light source is elongated and designed to emit a light over a length of less than 100 mm, the light source being formed of a gas-discharge lamp with an electrode separation of at most 70 mm, and wherein a lens for focusing the light which is emitted from the light source is arranged on a light inlet surface of the prism.