| 摘要 |
The invention relates to an optical filter for eye glasses, in particular suitable for spectacle lenses or ski goggles, having a spectral power transmission curve (1a, 1b, 1c) of optical radiations. Said spectral power transmission curve (1a, 1b, 1c) exhibits a local maximum spectral transmission (Tmax) of radiations in a first wavelength range (&Dgr;λmax), whereby said first wavelength range (&Dgr;λmax) being between 380 nm and 420 nm. Said spectral power transmission curve (1a, 1b, 1c) exhibits spectral transmissions (T) of radiations in a second wavelength range (&Dgr;λth) which are lower than an upper threshold spectral transmission (Tth,u), whereby said second wavelength range (&Dgr;λth) is between 420 nm and 500 nm and whereby said upper threshold spectral transmission (Tth,u) is smaller than said maximum spectral transmission (Tmax). The invention is characterized in that said maximum spectral transmission (Tmax) is larger than 21 %. |
