Superior Polarized Lenses
HOW POLARIZATION WORKS
BENEFITS OF POLARIZATION
- Elimination of nuisance and discomfort caused by glare.
- Amazing visibility and clarity, especially in very intense and bright environments.
- Enabling the wearer to see beneath the glare like fish in the water.
Without Polarized Lens
With Polarized Lens
Benefits of ThermoForce Technology®
Infrared protectionStops up to 5X more infrared light than standard polarized lenses
Glare free visionThanks to the polarized filter, for high image definition and contrast
Shatter resistanceThermo Force material molecular structure is higher and more impact-resistant than polycarbonate
Visual clarityPrevents visual fatigue thanks to low haze and high material transparency
In daylight, the human eye is exposed to:
- short wavelength ultraviolet radiation (UV)
- visible radiation or visible colors
- long wavelength infrared radiation (IR)
Infrared can’t be seen but can be felt as heat.
Most infrared radiations are absorbed by the ocular structure, raising the overall temperature of the eye.
Infrared is divided into three sub-ranges:
- IR-A, or near infrared: from 780 to 1400nm
- IR-B or far infrared: 1400 to 3000nm
- IR-C: from 3000 to 10000nm. This band does not normally reach the earth’s surface because it is absorbed by the atmosphere, but non-natural sources of IR-C can be a significant hazard.
- This lens allows for a 92% reduction of Infrared radiation compared to a standard polycarbonate sun lens.
- Thermo Force absorbs up to 90% near (A) and far (B) infrared radiation (from 780-2000 nm), coming from natural sources.
- This results in a cooling effect for the eyes, the eyelids and the face areas
shielded by the lens or shield.
- It also offers full UV protection (400 nm).
- Lightweight: much lighter than mineral glass.
What ZEISS Sunlens Thermo Force protects against: infrared radiations
The sun’s radiation is a continuous spectrum made up of electromagnetic waves with higher or lower energy. Visible light, also known as visible spectrum, is the portion visible to human eye, allowing it to distinguish shapes and colors. The eyes are also exposed to two other kinds of energy: ultraviolet light (UV) and the infrared (IR) rays.
Up to 53% of sunlight is made of infrared radiation which cannot be seen by the human eye but is perceived as heat.
Extreme conditions and excessive heat can be harmful and lead to discomfort for the eyes.