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The eyewear fails the test if the aluminum foil witness sheet is punctured or if the eyewear is cracked. In addition to ballistic performance, the U.S. military standard includes requirements for optical clarity, protection from UV rays, fit, chemical resistance, and environmental stability (properties won’t be changed by exposure to a range ...
Ballistic eyewear is a form of glasses or goggles that protect from small projectiles and fragments. For the U.S. military, choices for such eye protection are listed on the Authorized Protective Eyewear List (APEL). [1] Ballistic eyewear including examples that meet APEL requirements are commercially available for anyone who wishes to buy it.
The military offers annual replacements for those who qualify, and personnel may request the government issued glasses in addition to several varieties of more attractive eyewear, in clear and tinted lenses, as well as prescription gas mask inserts and inserts for government-funded eye protection ballistic eyewear. [4]
Safety glasses or spectacles, although often used as a catch-all term for all types of eye protection, specifically revers to protective equipment that closely resembles common eye wear. To meet most national standards, spectacles must include side shields to reduce the ability of debris to get behind the lenses from the side.
During space walks, the visor of the astronauts' helmets, which also has a thin gold coating for extra protection, functions as strong sunglasses. [59] [60] [61] The frames of sunglasses and corrective glasses used in space must meet special requirements. They must be flexible and durable, and must fit firmly in zero-gravity.
Luxottica owns not only a large portfolio of brands (over a dozen [53]) such as Ray-Ban and Oakley but also retailers such as Sunglass Hut, Lenscrafters and Oliver Peoples, the optical departments at Target, and (formerly) Sears, as well as key eye insurance groups including the second largest glasses insurance firm in the US, EyeMed. It has ...
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