While adding to the mystique of an aviator, sunglasses protect a pilot’s eyes from glare associated with bright sunlight and the harmful effects from exposure to solar radiation. Lenses for sunglasses that incorporate 100% ultraviolet protection are available in glass, plastic, and polycarbonate materials. Glass and CR-39® plastic lenses have superior optical qualities, while polycarbonate lenses are lighter and more impact-resistant. The choice of tints for use in the aviation environment should be limited to those that optimize visual performance while minimizing color distortion, such as a neutral gray tint with 15 to 30% light transmittance. Polarized sunglasses are not recommended because of their possible interaction with displays or other materials in the cockpit environment.
Tag Archives: cr 39
Selecting Sunglasses for Pilots
November 5, 2009 – 2:43 am
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By iflyasa
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Posted in Aeromedical Factors, Educational, Pilot Shop, Pilots
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Tagged aeromedical, aviation, aviation environment, aviator sunglasses, biological tissue, christmas gift, cockpit environment, color distortion, cr 39, eye care practitioner, light transmittance, ophthalmic lenses, optical qualities, pilot, plastic lenses, polycarbonate lenses, polycarbonate materials, solar radiation, sunglasses, vision, visual perception, visual scanning, world meteorological organization
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Aviators’ Sunglasses Lens Material Options
In one of my previous post – Sunglasses for Pilots, we talked about why it is extremely important for a Pilot to be very careful about choosing proper quality and material for the Sunglasses. The American Optometric Association recommends wearing sunglasses that incorporate 99 – 100% UVA and UVB protection. Fortunately, UVC, the most harmful form of ultraviolet radiation, is absorbed by the atmosphere’s ozone layer before it reaches the Earth’s surface. Some scientists believe, however, that depletion of the ozone layer may allow more ultraviolet to pass through the atmosphere, making 100% ultraviolet protection a wise choice when selecting eyewear.
November 5, 2009 – 2:15 am
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By av8er
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Posted in Aeromedical Factors, Educational, Pilot Shop, Pilots
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Tagged aeromedical, american optometric association, aviation, coating glass, cr 39, crown glass, depletion of the ozone layer, flying, glass lenses, index of refraction, lens material, lens materials, optical qualities, optical quality, pilot, plastic glass, plastic lenses, quality crown, resistant coatings, sunglasses, ultraviolet protection, ultraviolet radiation, uva and uvb, uvb protection, vision, visual scanning
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