Revision's Bullet Ant Goggles With Occumax Plus Anti-Fog coating
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Transcript of Revision's Bullet Ant Goggles With Occumax Plus Anti-Fog coating
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7/27/2019 Revision's Bullet Ant Goggles With Occumax Plus Anti-Fog coating
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FOG HORN 2013Twobirds Flying Publication
Copyright 2013, Towbirds Flying Publication. All Rights Reserved.
Revisions Bullet Ant Goggles
With OCCUMAX Plus
Technology
By: Sal Palma
Revision Military has been designing anddelivering standard setting ballistic eye
protection for over 12 years. In addition to
being a key supplier to the DoD, the company
has been successful in acquiring contracts from
many ofworlds most forward-thinking military
organization. In 15 August 2013, the company
announced a 5-year contract to supply the
Swiss Armed Forces. On 29 August 2013, the
company entered into an agreement with the
Danish Defence Acquisition and LogisticsOrganization (DALO) to supply the Danish
military with an additional 3,000 Batlskin
Cobra Helmets for delivery in Q4, 2013.
Johnathan Blanshay, Revisions Founder and
CEO, has a great deal to be proud of. In a short
12 years hes managed to assemble a team that
transformed Revision into a global company
supplying a superb product, with outstanding
customer service and unwavering support for
military men and women around the world.
The vision to be the leading global supplier of
protective eyewear for our military drives
Revisions R&D, which resulted in leading edge
innovation; one being the OCCUMAX Plus lens
coatings for scratch resistance and fogging.
Eye protection is only useful when worn, and
Revision understands the factors that promote
the use of protective eyewear. Certainly
comfort is at the top of that list, as is optical
clarity. However, fogging is all too often an
occurrence prompting service men and women
to remove their eye protection. So, I am thrilled
to have the opportunity to evaluate the
companys latest advancement, OCCUMAX
Plus anti-fogging lens coating.
To understand OCCUMAX we need to
understand fogging; a natural byproduct
resulting from atmospheric conditions
described and dimensioned by dew point.
Dew point is that temperature at which water
vapor condenses at the same rate as itevaporates. It varies with ambient temperature
and relative humidity at atmospheric pressure.
Dew point is expressed in degrees Celsius or
Fahrenheit. In all cases except were relative
humidity is 100% the dew point is below
ambient temperature.
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Revisions Bullet Ant Goggles With OCCUMAX Plus Technology 2013
Copyright 2013, Twobirds Flying Publication, All Rights Reserved
The mechanics of fogging are often
misunderstood, so I am going to dive into that
for no other reason than to set some level of
understanding1.
Fogging, as it pertains to eyewear, occurs when
a surface comes in contact with the atmosphere
cooling the air layer its in contact with to a
point equal to, or below, the dew point. So, on
a cold day ambient temperature lowers the
surface temperature of your goggles lenses,
they in turn are in contact with the warm and
humid air volume between your face and the
lens internal surface; lowering air temperature
at the point of contact to, or below, the dew
point. We attempt to deal with is problem by
providing adequate ventilation to equalize
internal and external conditions, and chemically
treat the lens surface to inhibit or delay fogging.
In applying an anti-fogging solution or a coating
we dont defy the laws of physics; instead, we
attempt to delay, by at least 100 seconds, the
time it takes for droplets of moisture to form on
a treated surface; doing so, buys us time foracclimation or equalization to occur between
the lens surface and the ambient air. Once that
happens, the surface is no longer susceptible to
fogging and condensation. This is how it all
works.
The question to be answered in this review is
how effective Revisions OCCUMAX Plus
technology is at delaying the formation of
condensation on the treated lens surface. To dothat, we are using Revisions Bullet Ant goggles,
which along with the StingerHawk Spectacles,
1The Image PerformanceInstitute has a web site
that lets you easily calculate dew point. You can also
see the interaction between ambient temperature
and relative humidity to arrive at dew point. Its
excellent and easy to use.
Desert Locust and Wolfspider goggles will all be
rolled out with the OCCUMAX Plus lens
coatings.
Although I am not reviewing the goggles
themselves, I must say that I love the Bullet Ant
from Revision;
they are a low profile design with superb
ventilation, fit and feel. The fact that they are
low profile makes them an ideal candidate for
fogging, especially when worn during physical
exertion and prolonged periods of use.
During the manufacturing process, Revision
applies an Occumax anti-scratch coating on the
exterior surface of their lenses and the
Occumax anti-fog coating on the inside surface.
The Occumax anti-scratch coating is a hard
coating while the anti-fog coating is a rougher
sticky surface. So, in testing, I expected to see
fogging and condensation on the outer lens
surface but no fogging on the internal surface of
the lens2.
In designing my test and evaluation I wanted to
cover two conditions.
2To prevent exterior lens surface fogging, Revision
recommends use of its Anti-Fog Cloth, which is a dry
towelette good for about 25 applications. They can
be purchasedhere
http://www.dpcalc.org/http://www.dpcalc.org/http://www.dpcalc.org/http://www.revisionmilitary.com/store/accessories/reusable-anti-fog-cloth/anti-fog-cloth.htmlhttp://www.revisionmilitary.com/store/accessories/reusable-anti-fog-cloth/anti-fog-cloth.htmlhttp://www.revisionmilitary.com/store/accessories/reusable-anti-fog-cloth/anti-fog-cloth.htmlhttp://www.revisionmilitary.com/store/accessories/reusable-anti-fog-cloth/anti-fog-cloth.htmlhttp://www.dpcalc.org/ -
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Revisions Bullet Ant Goggles With OCCUMAX Plus Technology 2013
Copyright 2013, Twobirds Flying Publication, All Rights Reserved
First, and by far the more prevalent, fogging
that accumulates on the inside of the goggle
resulting from ambient temperatures being
lower than the interior of the goggle. If
Occumax Plus works, there should be no
fogging or condensation on the internal lens
surface.
The Second condition covers fogging that occurs
when the goggle is at a lower temperature than
the dew point, a condition that exists when
youve been sitting in an air-conditioned
vehicle, then without acclimation step outside
into a warm and humid environment.
To assess how effective the Occumax coating is
in addressing condition one, I engaged in
strenuous activity more specifically PT.
Throughout a four and one-half hour period, I
wore the Bullet Ants and experienced no
fogging or condensation. Note that these
goggles have ventilation openings at the top
and along the bottom of the frames; and my
breath, as I exhaled, had no clouding effect on
the interior lens surfaces.
Testing for the second condition required a trip
to the refrigerator. Station weather conditions
as reported at MacDill Air Force Base the day of
the test were: 87.1F, 30.05 inches of Hg, 53%
RH, 68F dew point. I chilled the goggles down
to 42F for 20 minutes before exposing them to
ambient temperature. The objective was to
determine how effective the OCCUMAX coating
is when transitioning from a cold environmentto a warm humid surrounding. This is a situation
you could encounter moving from an air
conditioned vehicle or aircraft into a hot and
humid environment.
You can readily see in the picture above that
fogging and condensation formed on the outer
surface of the lenses, which weve already
established as not coated for fogging. This begs
the question, why would you not coat the
exterior surface? I posed the same question toRevision, and received an enlightening
response:
When it comes to lens fogging and
scratching theres a trade-off; you can
either have really good anti-scratch or
really good anti-fog. If you develop one
coating that does both, it doesnt
particularly excel at either, leaving the
inside of your lenses somewhat foggy
and the outside more susceptible to
scratches. With goggles in particular,
industry has developed a manufacturing
technique called flow coating that
places the right coating where you need
it most. i.e.: anti-fog on the inside of the
lens where warm air from the wearers
face condenses, and anti-scratch on the
outside of the lens which is exposed to
the elements and requires protection
from blowing dust, sand and general
wear and tear
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Revisions Bullet Ant Goggles With OCCUMAX Plus Technology 2013
Copyright 2013, Twobirds Flying Publication, All Rights Reserved
In contrast, as the picture above clearly
illustrates, the interior surface of the lenses had
no perceivable fogging or condensation; any
cloudiness in the photo is on the lens outer
surface.
This was quite amazing, and a testament to how
effective the Occumax Plus anti-fog coating
technology is. These goggles were a full 26F
below dew point, and I am pleased to inform
you that Im a believer! If that sounds familiar
its because The Monkees did a song like
that
All of this boils down to some very good news
for Revisions customers; a ballistic eyewear
system of exceptional comfort; highly effective
against debris from a surface blast or stray
projectile, that wont fog up on you. When you
sum it all up, its not difficult to see why
Revision is the standard setting market leader.
Be sure to check out Revisions military line with
their Occumax Plus anti-fogging technology, I
think youll benefit from the experience.
-SP
Manufacturers Specifications:
EXCEEDS U.S. MILITARY BALLISTICIMPACT REQUIREMENTS FOR GOGGLES
(MIL-DTL-43511D, CLAUSE 3.5.10)
EXCEEDS ANSI Z87.1-2010 BALLISTICIMPACT AND OPTICAL REQUIREMENTS
CE CERTIFIED IN ACCORDANCE WITH EN166, EN 170 AND EN 172
CAGE CODE: 30VZ5
Revision Military
7 Corporate Drive
Essex Junction VT
05452 USA
T: 802.879.7002
T: 800.383.6049
F: 802.879.7224
http://www.revisionmilitary.com/http://www.revisionmilitary.com/http://www.revisionmilitary.com/