COFRA ballistic protective glasses (anti-scratch, anti-fog, UV400) TRANSPARENT LENSES BLACK FRAME

BALLISTIC PROTECTIVE GLASSES WITH CLEAR LENSES
PROTECTOR-BALLISTIC

-Anti-scratch,
-Anti-fog,
-UV400.

-LENS :
MATERIAL: polycarbonate
COLOR: grey

-FRAME :
FRONT MATERIAL: polycarbonate
TEMPLE MATERIAL: polycarbonate

-WEIGHT: 33 g

AREA OF USE: mechanical work in enclosed environments with good visibility conditions.

PLUS: BALLISTIC RESISTANCE, STANAG 2920 - STANAG 4296

BALLISTIC RESISTANCE
STANAG 2920 and STANAG 4296 are standards for evaluating ballistic resistance recognized in all NATO member countries. Unlike compliance with the European standard EN 166, which determines the impact resistance of a steel sphere with a diameter of 6 mm and a mass of 0.86 g hitting the eyepieces at a speed of 45 m/s, compliance with STANAG 4296 guarantees ballistic resistance as defined by STANAG 2920, determining ballistic resistance against projectiles with a caliber of 3.6 mm (0.14") and a weight of 325 mg, fired at a speed of 215 m/s, or 774 km/h (with the possibility of reaching even higher speeds as reported in the test report). STANAG 2920 does not define a minimum protection threshold in the same way as EN 166, but allows for the specification of a V50 velocity, which represents the speed at which a projectile could penetrate the eyepiece with a 50% probability. In addition, glasses compliant with STANAG 4296 must meet a series of requirements, such as:
• impact resistance according to the conditions defined by STANAG 2920;
• criteria related to their use: the glasses must be as light and comfortable as possible, as well as minimizing fogging (through ventilation and/or appropriate coating) and having good scratch resistance for prolonged use;
• optical quality: the glasses must provide a field of view of at least 160° and must not distort vision;
• additional characteristics: the glasses must have the lowest possible degree of gloss and must be compatible with the use of other protective elements.