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The U.S. military standard (MIL-PRF-31013), requires (at a minimum) that ballistic eyewear can always withstand a 0.15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second (approximately 3.8 mm 0.376 g at a velocity of 195 – 201 m/s). Goggles are required to stop a 17-grain fragment simulating projectile ...
Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.
Mares is a manufacturer of scuba equipment. Founded in 1949 by Ludovico Mares in Rapallo , Italy, the company initially made diving masks and spearguns . It has since expanded to become one of the largest scuba manufacturers, having merged with US manufacturer Dacor .
AN-6530 lenses are ground and polished optical glass, approximately 3 ⁄ 32 of an inch (2.4 mm) thick. These share their design with B-7, Navy Mk-II and commercial 'Skyway' brand goggles. They were produced in clear, amber, green, and a high-density dark green for gunnery to facilitate spotting targets against the sun.
British Army Reserve soldier demonstrates a virtual reality headset.. A head-mounted display (HMD) is a display device, worn on the head or as part of a helmet (see helmet-mounted display for aviation applications), that has a small display optic in front of one (monocular HMD) or each eye (binocular HMD).
The AN/PSQ-42 Enhanced Night Vision Goggle-Binocular (ENVG-B) is a third-generation passive binocular night vision device developed for the United States Army by L3Harris. It combines dual tube image-intensifying (I²) and thermal-imaging technologies into a single goggle, enabling vision in low-light conditions.
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