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2. Angular resolution - Wikipedia

   en.wikipedia.org/wiki/Angular_resolution

   It is used in optics applied to light waves, in antenna theory applied to radio waves, and in acoustics applied to sound waves. The colloquial use of the term "resolution" sometimes causes confusion; when an optical system is said to have a high resolution or high angular resolution, it means that the perceived distance, or actual angular ...

3. ELCAN Optical Technologies - Wikipedia

   en.wikipedia.org/wiki/ELCAN_Optical_Technologies

   ELCAN currently manufactures the "Specter" line of combat optics in a variety of configurations. The Specter 4× Optical Sight, DR 1.5×/6×, DR 1x/4× and TR 1/3/9 are available with a BDC reticle for the 5.56×45mm NATO or the 7.62×51mm NATO .

4. Carl Zeiss AG - Wikipedia

   en.wikipedia.org/wiki/Carl_Zeiss_AG

   First workshop of Carl Zeiss in the center of Jena, c. 1847 Carl Zeiss Jena (1910) One of the Stasi's cameras with the special SO-3.5.1 (5/17mm) lens developed by Carl Zeiss, a so-called "needle eye lens", for shooting through keyholes or holes down to 1 mm in diameter 2 historical lenses of Carl Zeiss, Nr. 145077 and Nr. 145078, Tessar 1:4,5 F=5,5cm DRP 142294 (produced before 1910) Carl ...

5. C79 optical sight - Wikipedia

   en.wikipedia.org/wiki/C79_optical_sight

   A C79 Optical Sight. The C79 optical sight (SpecterOS3.4x) is a telescopic sight manufactured by Elcan.A variant, the M145 Machine Gun Optic is in use by the US military. It is 3.4×28, meaning 3.4x magnification, and a 28mm diameter objective lens.

6. Binoculars - Wikipedia

   en.wikipedia.org/wiki/Binoculars

   These coatings have become a key technology in the field of optics and manufacturers often have their own designations for their optical coatings. The various lens and prism optical coatings used in high-quality 21st century binoculars, when added together, can total about 200 (often superimposed) coating layers.

7. Ciena - Wikipedia

   en.wikipedia.org/wiki/Ciena

   Ciena was founded in 1992 under the name HydraLite by electrical engineer David R. Huber. [13] [14] Huber served as chief executive officer, while his former employer, Optelecom, an optical networking company, provided "management assistance and production facilities," [14] and co-founder Kevin Kimberlin "provided initial equity capital during the formation of the Company". [15]