Dye i4 / i5 Thermal Lens (Clear) The injected thermal lens for the DYE i4 goggles provides 100% UV-A, UV-B and UVC protection and is optically corrected for superior clarity. The lenses are also 4d-coated with permanent anti-fog and anti-scratch coating for performance and longevity. Selected lenses have a dyetanium™ coating to reduce glare and balance light transmission.