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These binoculars, which have been on the market for high-quality compact binoculars for a long time, had the optical parameters 8×20 and 10×25. The "B" designation added to updated models means that there is sufficient eye relief for eyeglasses [Brille in German] wearers. The Trinovid series were supplemented in 2004 by the Ultravid series ...
Because a typical binocular has 6 to 10 optical elements [52] with special characteristics and up to 20 atmosphere-to-glass surfaces, binocular manufacturers use different types of optical coatings for technical reasons and to improve the image they produce. Lens and prism optical coatings on binoculars can increase light transmission, minimize ...
The ENVG-B was reported to be in development as early as 2018, intended to give soldiers better depth perception than the monocular AN/PVS-14 and AN/PSQ-20. [5] Initial production (Directed Requirements Contract) goggles were produced with a black housing, while full rate production (Program of Record Contract) goggles are now produced in a Tan 499 housing.
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Often, modern theatre binoculars are equipped with an LED flashlight, which makes it easier to find a place in the dark. In addition to the more stereotypical binocular type, folding opera glasses were another common design. They were made mostly of metal and glass, with a leatherette cover for grip and color.