LIGHT-ABSORBING COATING Russian patent published in 2009 - IPC G02B5/22 B82B1/00 

FIELD: physics.

SUBSTANCE: coating includes dispersion metallic layers and dielectric layers. The dispersion layers used are layers of metal particles with average size d _av, made in form of close-packed monolayers. The dispersion and dielectric layers alternate with each other. Average size d_av of metal particles varies in the range 2-50 nm. Dielectric layers have optical thickness of λ₀/4, where λ₀ - is the wavelength of the band maximum of surface plasma absorption of the monolayer of metal particles, for which coefficient of absorption of the dispersion metallic layer is greater than coefficient of absorption of solid metal.

EFFECT: increased spectral selectivity of light-absorbing coating with retention of high value coefficient of absorption and low value of residual reflection.

2 dwg