FIELD: radiation engineering.
SUBSTANCE: the device has a chamber with a dotted diaphragm, the chamber walls serve as a screening envelope absorbing the radiation. The chamber has facilities for formation of source images as a result of radioactive radiation. Part of the envelope can freely move and is attached to the optical system providing for images in visible light to the required space depth.
EFFECT: improved quality of image of sources in visible light.
9 cl, 4 dwg
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