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Multi-purpose periscope with display and overlay capabilities










Image Number 6 for United States Patent #8279512.

A periscope that is switchable between the normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.








 
 
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