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An optical vortex (also known as a photonic quantum vortex, screw dislocation or phase singularity) is a zero of an optical field; a point of zero intensity. The term is also used to describe a beam of light that has such a zero in it. The study of these phenomena is known as singular optics.
Holographic weapon sights use a laser transmission hologram of a reticle image that is recorded in three-dimensional space onto holographic film at the time of manufacture. This image is part of the optical viewing window. The recorded hologram is illuminated by the collimated light of a laser diode built into the sight.
A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.
Leupold and Stevens Mark 6 scope with variable magnification 3-18x44mm, mounted on a M24 SWS. IDF M24 SWS with Leupold Mark 6 3-18x44mm sniper scope. Leupold FX-II Ultralight scope on a Ruger 77/44. The company's riflescopes are used by organizations such as the United States Army, the Secret Service and the Navy SEALs. [13]
Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.
The company's name "Trijicon" comes from combining "tritium", a radioisotope of hydrogen that is the key element utilised in the company's reticle illumination technology, and "icon", meaning picture or image; the consonant "j" was added to help syllabically blend the two words into one portmanteau word. Additionally, the "iji" in Trijicon ...
Diagram of three types of reflector sights that produce collimated reticles. The top uses a collimating lens (CL) and a beam splitter (B) to create a virtual image at infinity (V) of a reticle (R). The bottom two use half silvered curved mirrors (CM) as the collimating optics with the reticle off-set or between the mirror and the observer.
The crosshair is the most basic reticle for the AN/PVS-4 and is available as either a simple crosshair, A mildot crosshair or as an aimpoint crosshair. A simple crosshair reticle can be seen on the photo taken through a surveillance AN/PVS-4. The image was taken during a wide-area blackout on a moonless night in a remote suburban area.
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