OPTICAL UNIT LUMINESCENCE METHOD Russian patent published in 2010 - IPC H01J63/06 H01J21/04 

FIELD: physics.

SUBSTANCE: in order to generate luminescence of a light-emitting unit, luminescent material is exposed to a stream of radiation. Light flux of primary and secondary luminescent radiation is summed, wherein secondary luminescent radiation is generated by a set of 1 to K luminophors in a light-transmitting shell. Overall concentration of luminophors in the shell is determined using a formula and lies in the range from 0.05 to 50%. Radiation spectral ranges of the same luminophors in the shell completely or partially coincide with absorption spectral ranges of other luminophors in the shell, and the light flux of each luminophor (F_j) is induced by the sum of radiation from the source of primary (F₀) and secondary radiation of the luminophors (F_j) in the shell during complete or partial coincidence of the absorption spectrum of the analysed luminophor with the radiation spectra of primary and secondary radiation of other luminophors.

EFFECT: increased accuracy of the given luminescence spectrum, easier measurement of the luminescence spectrum, higher accuracy of the light flux, improved uniformity of luminescence owing to optimisation of total concentration and number of luminophors in the shell and optimisation of use of light-emitting diodes.

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