Anti-Stokes Phosphors are developed for up-conversion of long-wave IR-radiation (1,5-1,6 um) into that short-wave (0,8-1,02 um) and radiation of IR-range 0,9-1,07 um into visible light of various colours. They are useful in night viewing devices for spectral sensitivity broadening of electron-optical image converters (upto 1,6 um), in light-emitting diodes (LED) of various types, for visualization IR-radiation and laser adjustment, as well as for marking of documents and value papers.
      The Phosphors of ASP-group are powders, consisting of rare earth activated compounds based on yttrium (and some other elements) oxides, fluorides, oxysulphides, oxychlorldes.
      The phosphors provide parameters stability of emitters during > 100000 hours and within temperature range -60°C +70°C.

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