Carl Zeiss Jena DF 7x40 (2) - a photo on Flickriver

Carl Zeiss Jena DF 7x40 (2)

Gefertigt/Manufactured: 1970
Vergrösserung/Magnification: 7x
Öffnung/Aperture: 40 mm
Gesichtsfeld/Field Of View: 8.5°
Scheinbares Gesichtsfeld/Apparent Field Of View: 60°
Breite/Width*: 20.3 cm
Gewicht/Weight: 1277 g

* Bei/At 65 mm Pupillenabstand/Interpupillary Distance

ENGLISH VERSION below

Bei seiner Einführung in den 60er Jahren löst das behälterlose NVA Doppelfernrohr 7x40 (DF 7x40) mit Porro I Umkehrsystem eine ganze Reihe bewährter Zeiss Ferngläser (6x30, 8x30, 7x50 und 10x50) ab. Es ist der Vorgänger des EDF 7x40 (siehe www.flickr.com/photos/franksbinoculars/48975070751).
Auf dem rechten oberen Deckel befindet sich die Schwalbe für die Strichplattenbeleuchtung, das kleine kegelförmige Rädchen auf dem linken Deckel dient dem Einschwenken des IR-Aufklärungsschirmes in den Strahlengang des linken Auges. Der Schirm wird über den UV Anteil des Tageslichts aufgeladen.
Diese spätere Version beinhaltet in der Innenseite des Okularschutzes zwei Gelbfilter.

Eine frühere Version findet sich hier: www.flickr.com/photos/franksbinoculars/48928845291

Das Set befindet sich hier: www.flickr.com/photos/franksbinoculars/50263274513

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ENGLISH VERSION
When introduced in the 1960s the containerless NVA Doppelfernrohr 7x40 (DF 7x40) with Porro I prism system replaces a lot of established Zeiss binoculars (6x30, 8x30, 7x50 and 10x50). It is the predecessor of the EDF 7x40 (see www.flickr.com/photos/franksbinoculars/48975070751).
On the right upper cover plate there is the adaptor for the reticle illumination, the small conical wheel on the left plate serves for swinging in the IR detector in the optical path of the left eye. The detector is charged by the daylight’s UV contribution.
This later version includes two yellow filters inside the ocular-cover.

An earlier version can be found here: www.flickr.com/photos/franksbinoculars/48928845291

The set can be found here: www.flickr.com/photos/franksbinoculars/50263274513

Taken on: August 24, 2020

Tags:

DF 7x40

Sets appears in: • Carl Zeiss Jena • DDR/GDR more » • Militärische Optiken/Military Optics « less

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