FIELD: radio engineering, communication.
SUBSTANCE: shutter has a metal film which is evaporated by focused radiation, the metal film being disposed on a transparent substrate which is mechanically mounted in the optical system of a radiation receiver in the plane of the intermediate real image of the lens. The film is placed on the transparent substrate with spacing around its perimetre, which is greater than the depth of resolution of forming the intermediate image by the lens.
EFFECT: nanosecond response delay of operation in a wide spectral range, low triggering threshold.
7 dwg
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