Since 2008 I have worn one pair of sunglasses and one pair only,
the ESS Crossbow Ballistic Eye Shield. Over the years I have pretty much owned
every lens, and frame with the exception of the polarized lenses. They are
modular form fitting to my face and provide complete peripheral protection. They
have become somewhat of a signature for me. I came across them at Atlantic
Police Supply Distributors in Bedford, NS closed since 2009 or so. The price
point was just right ringing in at about $120.00 for two frames and three
lenses; black, white, and yellow.
ESS Eye Wear and Ballistic Googles exceed most if not all military
testing standards and have become standard issue for all U.S. Department of
Defence Employees. ESS Googles are standard issue for all flight deck and aviation
crews within the U.S. Navy.
HIGH VELOCITY
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Photo by ESS |
The Eye Shield surpasses the test as defined by the American
National Standards Institute (ANSI) Z87.1, high-velocity impact protection requires
a ¼ inch steel shot fired at 102 Mph (163km/h) at a lens straight on from three
different heights at 7 different angles
HIGH IMPACT
Within ANSI Z87.1 the lens ust hit with a 500g (1lb) metal spiked
dropped from a height of 51 inches, no frame parts or lens fragments maybe
ejected during the impact.
US MIL SPEC MIL-PRF-32432 Standards
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Photo By ESS |
ESS Eye Pro exeeds the U.S. Military Standard which is approximately
six times that of the ANSI standard. The U.S. Military standard requires that
ballistic eyewear must be able to withstand up to a .15 calibre at 640-60ft/s
for spectacles and .22 calibre at 550/560 ft/s for goggles.
PRISMATIC POWER
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Photo by ESS |
A laser fixture is set up 30 feet from
the NBS target and is fired through each lens at the target. The better the optics,
the less bending of the laser beam is observed; a lens without induced prism
will allow the laser’s path to continue directly at the center of the NBS
target. Bear in mind when viewing the amount of prism that the effects of the
distortion are more significant at distances greater than 30 feet.
REFRACTIVE
POWER: ANSI Z87.1 OPTICS TEST #7.4.3.3
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Photo by ESS |
Lens refraction is a measure of what
many people refer to as distortion or blurriness. The ANSI Z87.1 Refractive
Power test requirements allow for a moderate amount of refraction in a safety
lens. The lines in the NBS Definition Pattern are used to measure this lens
characteristic.
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Photo by ESS |
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Photo by ESS |
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Photo by ESS |
Cross Series ™ Ballistic Eyewear
ESS Canada offers exclusive pricing to
members of the Canadian Armed Forces and the First Responders community of up
to 30% off retail pricing. Visit essforces.ca and register online for an
account. You will have to send a picture or scanned copy of your government
issued ID (NDI 10, 20, 50) , Police Credentials etc in order to confirm your employment
status.
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Photo: ESSForces.ca |
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Photo: ESSForces.ca |
References
ESS Product Brochure