Patent ID: 9633830
Date: 2017-04-25
CPC Classifications: C03C,C09D,C09K,H01J

Claim:
1. A coating system comprising a phosphor-containing coating that generates visible light as a result of being excited by ultraviolet radiation that includes at least first and second wavelengths, the phosphor-containing coating comprising: at least a first phosphor that predominantly absorbs and is excited by ultraviolet radiation of a first wavelength to emit visible light and absorbs but is less efficiently excited to emit visible light by ultraviolet radiation of a second wavelength; and a second phosphor that preferentially absorbs the ultraviolet radiation of the second wavelength compared to the first wavelength, and is excited by the second wavelength to emit visible light; wherein the second phosphor is a manganese-activated barium magnesium aluminate phosphor that is activated only by manganese ions, wherein the second phosphor comprises formula BaMg