1951 were already the emergence of the technical terms no more used for the designation of the binoculars from the house Carl Zeiss Jena well-known and it comprehensive searches and questionings of former coworkers were employed, who led however to no clear result.
From special interest thereby the origin to today registered mark "Deltrintem" for probably the most frequently built binoculars of the 8x30. celebration is stands only that the wide angle models "Delturis", "Deltrentis" and "Delactis" were developed toward end of the First World War by Dr. H. Erfle. Also the names seem to come from Dr. Erfle. Since in this time the single eyepiece attitude was still preferred, these glasses were designated first, for the averaging rubbing models the syllable "em" were only added. "Deltrintem" makes thereby an exception. For linguistic reasons will one instead of "Deltrentem" that klanglich improves "Deltrintem" to have selected.
Over "Delturis" and "Delturisem" Dr. Erfle in the special edition wrote "new field glasses with large visual field" in the year 1921: "the syllable" tur "in its name is to express that they are to be considered as tourist glasses of this series."
From the three particularly emphasized 8x-Glaesern thereby the name giving "Delturis" 8x24 is clarified, with "Delactis" 8x40 could be closed on "eightfold".
With "Deltrentis" however each reference is missing. The asked persons were the opinion that during the word formation "Deltrentis" the Greek "triakonta" - "played thirty" a role and so that the objective diameter be designated should.
With the newer models of Carl Zeiss Jena the names are "NOTAREM" to emphasize "NOBILEM" and "ASPECTEM" which was designated by its developers. The ending "em" attaches to the tradition, whereby the "Aspectem" telescopes are monokulare models and would have accordingly also "mo" to end, and/or as binocular prospect telescope over single eyepiece attitude orders. The designations are taken and for all series independently of the enlargement or the lens aperture are used to latin in each case. "Aspect" equivalently to "view, view" stands here for the preferential employment of the prospect telescopes with its high enlargements and the employment in connection with a stand in exposed places. The elegance of the roof Kant glasses is after the will of their developers noble-trusts Hilbert and Siegmar bridegroom with the name "Notarem" derived from "nota..." - "remarkably, remarkably" to be underlined, while on the Porrosystem are based and as high speed binoculars conceived "Nobilem" models after the word trunk "nobil.." - "were created famous, nobly, noticeably".
Subject: From the Deutsche Optik bulletin board
Re: Questions About Docter Optics 7x40 B/GA
Posted by Holger Merlitz on 01/23/04
Hi, The civilian version of the former EDF 7x40 is still in production. This is the brochure on Docter's page: http://www.docter-germany.com/fernglas/outdoor/outdoor.pdf I think it can be ordered with and without reticle. The infrared detector is removed, as is the radioactive reticle illumination. The optical formula is unchanged, as is the general mechanical construction. However, those two flint-lenses which caused the yellow tint in the EDF are replaced with neutral colored glasses, so the present 7x40 B/GA is supposed to have a neutral color rendition. The lens coating is also slightly improved. Otherwise the optics are equivalent. In US, Docter products seem to be available here: http://www.hotbuyselectronics.com/binoculars.htm In Germany one can find them here: http://www.intercon-spacetec.com/ (if you can't read this page, just enquire at info@___on-spacetec.de). Marketing doesn't seem to be a strong side of Docter - I know of very few places where to get their products. Regards, Holger
Subject: New Zeiss models