摘要 |
A blackout blind is movably mounted within a periscope of an armor vehicle for covering the eyepiece viewing opening when not in use to prevent interior light from being emitted through the periscope and revealing the location of the vehicle. A transparent block of plastic is mounted within a protective housing which extends through an opening in the vehicle armor. A viewing opening is formed in the housing portion located within the vehicle for observing an exterior field of view. A sheet metal guide is mounted within the housing between the plastic block and housing walls and is formed with a pair of channels which extend along the edges of the viewing opening. A blackout blind is slidably mounted and retained within the channels and between the block and housing walls, and is movable across the viewing opening of the housing between open and closed positions. The blind preferably is formed of a polycarbonate sheet material which enables the blind to move through severe radius sizes when concealed within the housing without cracking, sticking or taking a set under severe weather and operating conditions.
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