Composite material, useful to produce lighting device, preferably UV and blue LED, comprises poly

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The present invention relates to a composite material made up of a polymeric matter in which fluorescent particles of intermediate size are distributed belonging to the range going of 2 Nm with 2 micrometers characterized in that the fluorescent particles have at least one their absorption bands which belong to the range going from 320 to 480 Nm, their method of preparation and their use for manufacture of devices of lighting based on the use of DELs UV or blue.