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Bushnell Corporation is an American firm that specializes in sporting optics and outdoor products. It is based in Overland Park, Kansas and is a wholly-owned subsidiary of Vista Outdoor . Bushnell makes binoculars , telescopes , spotting scopes , riflescopes , red dot sights , GPS devices , laser rangefinders , game cameras , night-vision ...
Eye relief – Eye relief is the distance from the rear eyepiece lens to the exit pupil or eye point. [15] It is the optimal distance the observer must position their eye behind the eyepiece to see a non-vignetted image. The longer the focal length of the eyepiece, the greater the eye relief.
A United States Marine firing an M4 carbine, using an EOTech holographic sight to aim.. The first-generation holographic sight was introduced by EOTech—then an ERIM subsidiary—at the 1996 SHOT Show, [2] under the trade name HoloSight by Bushnell, with whom the company was partnered at the time, initially aiming for the civilian sport shooting and hunting market.
12.7 mm M2 Browning machine gun mounted on Katlanit RCWS 30mm Mk44 Bushmaster II & M240 machine gun & Spike LR mounted on Czech Pandur II IFV. The Samson Remote Controlled Weapon Station (RCWS), also known as Katlanit (קטלנית in Hebrew: "lethal") is a remote weapon system (RWS) that enables a variety of devices to be operated automatically or by remote control, including 5.56 mm, 7.62 mm ...
Phalanx automated turret, mounted on USS Denver. A sentry gun is a weapon that automatically aims and fires at targets that are detected by sensors. The earliest functioning military sentry guns were the close-in weapon systems point-defense weapons, such as the Phalanx CIWS, used for detecting and destroying short range incoming missiles and enemy aircraft, first used exclusively on naval ...
For a shooter, eye relief is also a safety consideration. If the eye relief of a telescopic sight is too short, leaving the eye close to the sight, the firearm's recoil can force the optic's eyepiece to hit and cut into the skin around the shooter's eye, leaving a curved scarring laceration on the medial end of the supraorbital ridge and the ...
In optics, a relay lens is a lens or a group of lenses that receives the image from the objective lens and relays it to the eyepiece. Relay lenses are found in refracting telescopes , endoscopes , and periscopes to optically manipulate the light path , extend the length of the whole optical system , and usually serve the purpose of inverting ...
The largest warship turrets were in World War II battleships where a heavily armoured enclosure protected the large gun crew during battle. The calibre of the main armament on large battleships was typically 300 to 460 mm (12 to 18 in).