Multistage diffraction filter consisting of coalined series of pinholes on parallel sheets can be used as nondegradable UV filter. Beam is attenuated as each pinhole diffracts radiation in controlled manner into divergent beam, and following pinhole accepts only small part of that beam.


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    Title :

    Pinhole diffraction filter


    Contributors:

    Published in:

    Publication date :

    1977-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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