Combined night/day viewing apparatus

Patent

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Details

350486, 350541, G02B 2308, G02B 2312, G02B 2608

Patent

active

047580763

ABSTRACT:
Optical axes of the day path and of the night path extend in a sagittal plane (5,9) of the carrying vehicle and the passage from the night path to the day path or conversely is effected by means for displacing a first reflector parallel to the plane in order that the input light beams are directed to the optical axis of the day path or of the night path. A second output reflector along the optical axis for the day path is simultaneously displaced from an active position, for viewing by day, to a concealed position, for viewing by night, when said first reflector is displaced to deflect said beams along said night path.

REFERENCES:
patent: 1730712 (1929-10-01), Wright
patent: 3407302 (1968-10-01), Bouwers
patent: 3456999 (1969-07-01), Hopp
patent: 3509344 (1970-04-01), Bouwers
patent: 4145119 (1979-03-01), Tausch
patent: 4467190 (1984-08-01), Hadani

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