Transmission of UV - radiation is reduced by the glasses used in the FaderLux.
Furthermore, it has an integrated high quality multicoated UV filter.
This offers extra eye protection when viewing cloud intervals.
Transmission when turned to 7 Stops:
UV 365 2 %
UV 375 0 %
UV 395 0 %
UV 405 1 %
The FaderLux Viewing Glass covers the UV range beyond 400 nm and amounts to 99% in the densest position.
Even the most transparent position it still provides 86% UV-protection.
But please note that indirect light rays might reach the eye from the side.
The Viewing Glass is only meant to be used as required in our profession and not for prolonged sun observation.
Information from the German Federal Office for Radiation Protection:
Ultra Violet radiation, covering wavelengths between 100 Nanometer (nm) and 400 nm, has the highest energy level of all optical radiation.
According to its physical and biological characteristics, it is further divided into
The extremely energetic UV-C-radiation is entirely screened out by the atmosphere.
So no natural UV-C-radiation reaches the surface of the earth.
Highly energetic UV-B-radiation is also largely screened out by the atmosphere, depending on the thickness of the ozone layer.
But not entirely:
Up to 10% of UV-B-radiation reach the surface. The levels may increase on account of the ozone hole phenomenon.
Most of the longer-wavelength UV-A-radiation reaches the surface unobstructed.
UV-radiation is absorbed by the eye cells and causes various alterations.
Depending on its wavelength, it penetrates different regions in the eye: UV-A-radiation reaches further than the shorter-wavelength UV-B-radiation.
Acute effects from UV exposure are inflammation of the cornea, conjunctivitis and photochemical damage of the retina.
Cataracts are a chronical effect.
The lense of the eye is affected the most as it absorbs the major part of UV-radiation penetrating the eye.
A small part of UV-A-radiation advances to the retina and is therefore largely associated with retinal alterations and macular degeneration (macula = part of the retina where visual perception is most acute).