TECHNOLOGY

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TECHNOLOGY

With 8 layers of the most advanced films and optics, Costa Del Mar® makes one of the highest performing lenses on the water – and anywhere else for that matter.

POLARIZATION

A Few Facts About Polarization and Why All Costa Del Mar Sunglasses are Polarized!

	Ordinary sunglasses only reduce the amount of visible light entering the eye. Your eyes already have that natural ability. Polarization provides a level of light management that ordinary sunglasses do not have the ability to perform. Only polarization offers a true working technology that eliminates glare and delivers uncompromised performance.
	Polarizing a lens is the process of laminating on (cheap), or casting in (the way we do it), a polarizing film to a lens. Our polarized film consists of poly-vinyl alcohol molecules running in horizontal parallel chains. These chains act as a filter to block out light that bounces off horizontal reflective surfaces such as water, the highway, or the moisture in the air around you. This reflected light is 7 to 10 times brighter than ambient light and is commonly referred to as glare.
	The real problem is glare. Although not quite as intense as a flash bulb, reflective glare has a cumulative effect that over the course of a few hours in the sun, will produce the same effect as a flash bulb. Many vision problems associated with night driving are rooted not only in the ability to see at night, but the lingering effects of exposure to glare during the daylight hours.
	Like a camera, the eye must adjust to the glare in the foreground so it mutes the lower light levels. If you eliminate reflected glare, the remaining light falls in a narrow range of intensity allowing your eyes to relax and enjoy greater depth perception and true color contrast.

UV PROTECTION

All Costa Del Mar Sunglasses have 100% Internal UV Protection

	UV is divided into 3 segments based primarily on their photo-biological action.
	UVA (320-400nm) is of particular concern to eyecare professionals because it can easily damage the retina of the human eye.
	UVB (286-320nm) is of the greatest concern because it is associated with the production of cataracts.
	UVC (below 286nm) is effectively filtered by the earth's ozone layer and does not reach the earth's surface.
	Costa Del Mar lenses filter out 100% of dangerous ultra violet rays through at least 400NM. By blocking 100% UVA and 100% UVB, Costa Del Mar Sunproof lenses exceed FDA and ANSI Z80.3 standards for special purpose sun protective eyewear as well as the European and British standards BS2724.
	Unlike a typical sunlens that is simple coated with a UV bath, Costa Del Mar Lenses have the UV filter integrated into the lens when it is made. This insures that the UV protection will never rub off, fade or be rendered ineffective by scratches and abrasions.

BLUE LIGHT FILTRATION

Costa Del Mar Sunglasses Filter Blue Light

	The human eye can only focus on a narrow spectrum of light at one time. Lighter colors in the middle of the visible Light Spectrum are the easiest for the eye to focus on while darker colors ad contrast to the field of vision.
	Blue light falls in the middle of the spectrum and focuses imperfectly on the retina while scattering in the eye. This phenomenon called "blue blur" is further intensified by moisture and dust particles on clear days, and haze, fog, rain and snow on overcast days.
	Costa Del Mar's Advanced Colorific Polarization System eliminates unwanted blue light leaving only enough for color recognition.

COSTA LENS MATERIAL

100% Polarized Glass and Polarized Glass Mirror

	Exclusive Colorific Polarization System for ultimate glare reduction.
	100% protection from all harmful UV radiation through 400 nanometers.
	Optically correct, ground and polished silica glass.
	Premium Glare absorbing anti-reflective coating.
	Passes the ANSI Standard Z80.3-1996.
	Colors available: Gray, Amber, Vermillion, Sunrise, Blue Mirror and Green Mirror.

100% Polarized CR-39 Hard Resin

	Exclusive Colorific Polarization System for ultimate glare reduction.
	100% protection from all harmful UV radiation through 400 nanometers.
	Optically correct, equal to ground and polished glass.
	Patented hard coating for scratch resistance.
	Lighter and stronger than glass.
	Passes the ANSI Standard Z80.3-1996.
	Colors available: Gray, Amber, Vermillion and Sunrise.

100% Polarized Polycarbonate (Pro Sport & Polaris Only)

	Exclusive Colorific Polarization System for ultimate glare reduction.
	100% protection from all harmful UV radiation through 400 nanometers.
	Optically correct.
	Patented hard coating for scratch resistance.
	Lightest weight of all optical lenses, virtually shatter resistant.
	Passes the ANSI Standard Z87.1.
	Colors available: Gray, Amber, Vermillion and Sunrise.

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