Hermetic luminary dedicated for clean rooms, and other health service structures. Luminary to be surface mounted or in the walls and ceilings corners. Luminary equipped in highly efficient LED sources. The light stream of the diodes used is 2200 lm or 4400 lm. Color temperature is 3000 K lub 4000 K. Its optical system is equipped with the diffuser made from mat hardened glass. Luminary cover is made from INOX steal. The screws are flushed with the luminary surface to reduce the number of elements and to facilitate its cleaning. Luminary high hermetic feature is provided by silicon seals placed among the elements. Luminary equipped with the protective mesh made from the INOX steal.