FIELD: physics.
SUBSTANCE: protective light filter has a component which absorbs laser radiation and a reflecting narrow-band dielectric coating. In order to operate in the visible spectral region, the absorbing component of the light filter is made from material which resonantly absorbs at laser wavelengths, having high optical density in the region of laser radiation spectral lines. The reflecting narrow-band dielectric coating of the disclosed device with reflection coefficient on laser wavelengths R≥0.95 is deposited on the surface of the absorbing component on the side where laser radiation falls on the light filter.
EFFECT: simple design, smaller size and weight, high visual performance of the viewer using the light filter.
2 cl, 1 dwg
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