An exterior aircraft light unit (2) for emitting light of a first wavelength and light of a second wavelength, different from the first wavelength, with corresponding emission characteristics is disclosed. The exterior aircraft light unit (2) has at least one first light source (4) configured to emit the light of the first wavelength (40), at least one second light source (6) configured to emit the light of the second wavelength (60), and a wavelength selective optical element (8), which wavelength selective optical element (8) is reflective for the light of the first wavelength (40) and transparent for the light of the second wavelength (60), The at least one first light source (4), the at least one second light source (6) and the wavelength selective optical element (8) are arranged in such a way that both the light of the first wavelength (40) and the light of the second wavelength (60) hit the wavelength selective optical element (8), with the light of the first wavelength (40) being reflected by the wavelength selective optical element (8) and the light of the second wavelength (60) being passed through by the wavelength selective optical element (8), and with the light of the at least one first light source (4), upon being reflected by the wavelength selective optical element (8), and the light of the at least one second light source (6), upon being passed through by the wavelength selective optical element (8), having corresponding directional characteristics.


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    Title :

    Exterior aircraft light unit and method of operating an exterior aircraft light unit


    Additional title:

    Flugzeugaußenbeleuchtungseinheit und Verfahren zum Betreiben einer Flugzeugaußenbeleuchtungseinheit
    Unité d'éclairage extérieur d'aéronef et procédé de fonctionnement d'une unité d'éclairage extérieur d'aéronef


    Contributors:

    Publication date :

    2018-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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