FIELD: physics.
SUBSTANCE: proposed shutter comprises locally smelting or evaporating mirror metal film located in focal area of the lens and secured by translucent substrate. On radiation side said substrate includes also the ply of translucent liquid of solid sol with nanoparticles in size smaller than radiation wavelength. Mirror film is arranged on said substrate on radiation side or opposite side.
EFFECT: lower threshold of shutter operation.
4 dwg
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