TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The optically active nanoparticles are inorganic or organic.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The organic nanoparticles are formed using mechanical micronization. In the method: a type of the optically active molecules is mixed with the protective material and doped into the nanoparticles to obtain the optically active unitarily doped nanoparticles; a set of the optically active unitarily doped nanoparticles are associated with an optimized concentration rule to achieve a light cascade effect and incorporated into polymers to form an optically active composite material; many types of optically active molecules associated with a different optimum concentration rule for the light cascade effect are mixed in at least one type of protective materials and doped into the nanoparticles to obtain optically active light cascade doped nanoparticles; the optically active light cascade doped nanoparticles are incorporated into polymers to form an optically active composite material; and many optically active composite materials with different functions are stacked at the time of co-extrusion of matrix films. The emission spectrum of a type of optically active molecules partially overlaps the absorption spectrum of another type of optically active molecules successively forming a light cascade, where the concentration ratio of a first type to the second type is 0.13-0.26. Preferred Components: The nanoparticles are produced by organic colloidal latex path from methyl methacrylate. The optically active composite materials include: at least one of Stoke types of optically active molecules having a retransmission wavelength that is greater than the absorption wavelength; and/or at least one of anti-Stoke types of optically active molecules having a retransmission wavelength that is less than the absorption wavelength. The optically active molecules of fluorophore organic type have a remanence of less than 10 nanoseconds which are associated with the optically active crystals of inorganic zinc sulfide-silver type having a remanence of higher than 10 nanoseconds whose wavelength of emission and absorption respond to the light cascade effect.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The protective material comprises at least one polar polymer, having a low gas permeability, and/or crosslinked in three dimensions. The nanoparticles have a diameter of 1x 10-8 to 2x 10-6 m. EXAMPLE - No suitable example given.