Photoluminescent illumination apparatus 10, for marking the location of an article, fixture or fitting 20 in an aircraft cabin, comprises an emitting layer including a photoluminescent material and a protective layer overlying the emitting layer. The photoluminescent material emits visible light in a first region of the electromagnetic spectrum, e.g. green light, in response to excitation by light from a second region, e.g. blue light. The protective layer transmits light from the first and second regions. The illumination apparatus can comprise a carrier matrix. The illumination apparatus may be used to mark the location of a power socket, headphone socket or USB socket in non-emergency low lighting conditions, e.g. at night. The photoluminescent material may be a phosphorescent material, e.g. doped strontium aluminate. Indicia or markings may be formed by creating regions on the protective layer which are at least partially opaque. A colour layer may be provided so that the apparatus appears a first colour under first lighting conditions and a second colour in second lighting conditions.


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    Title :

    Illumination apparatus


    Contributors:

    Publication date :

    2017-06-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G09F DISPLAYING , Anzeigewesen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / C09K Materialien für Anwendungen, soweit nicht anderweitig vorgesehen , MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR / H01H Elektrische Schalter , ELECTRIC SWITCHES



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