Carl Zeiss DF 7x40 Cold War Military binocular made by Carl Zeiss Jena / East Germany.
Model: BI 7x40, Made in 1978
The military binoculars is a prism binoculars 7x40, similar to the NVA binoculars DF 7x40 from Carl Zeiss Jena. IOR Valdada was like Carl Zeiss, Jena, an important manufacturer of military optics for the Warsaw Pact. The similarity of the IOR binoculars is not by chance, because the optical components were supplied by VEB (Volks Eigener Betrieb) Carl Zeiss Jena in East Germany. The type of glass used for the Porro prisms is BaK4 (barium crown glass), which, thanks to its 98% light transmission, ensures high detail resolution and a bright and true-color image. The glass is coated with magnesium fluoride. The waterproof metal body of the IOR B/GA has a nitrogen filling.
Fields of application:
Difficult climatic conditions of field use. The IOR 7x40 resists strong climatic and dynamic loads. Observation of the battlefield during the day and at dusk. Measuring angles in horizontal and vertical direction. Determination of targets and distances.
Manufacturer: IOR VALDADA / Carl Zeiss Jena
Designation: DF IOR B / GA 7x40
Type: Porro Prisms, BAK4
Opening: 40 mm
Field of view: 148 m
Exit pupil: 5,7mm
Close Up: 5m
Reticle in the right eyepiece (see picture)
Luminous intensity: 32,5
Fold-Out IR filter in the left eyepiece
2 pieces orange filters for the eyecups