The invention provides an system (200) comprising (i) a light source (220) configured to provide radiation (221), wherein the radiation (221) at least comprises UV radiation; (ii) a waveguide element (1210) comprising a radiation exit window (230), wherein the waveguide element (1210) is configured to receive at least part of the radiation (221) and to radiate at least part of the radiation (221) to the exterior of the waveguide element (1210) via the radiation exit window (230) and configured to internally reflect part of the radiation (221) at the radiation exit window (230); (iii) an optical sensor (310) configured to sense an internal reflection intensity (I) of the internally reflected radiation (221); and (iv) a control system (300), functionally coupled to the optical sensor, and configured to reduce the intensity of the radiation (221) as function of reaching a predetermined first threshold of a reduction of the internal reflection intensity (I) over a time.


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    Title :

    Safety improvement for UV applications by monitoring changes in UV outcoupling


    Contributors:

    Publication date :

    2021-08-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    A61L Verfahren oder Vorrichtungen zum Sterilisieren von Stoffen oder Gegenständen allgemein , METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL / B08B Reinigen allgemein , CLEANING IN GENERAL / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / E05B LOCKS , Schlösser / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS



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