| 摘要 |
The invention relates to an ophthalmic lens having a main front face and a main rear face, one of said main faces comprising a filter that provides same with the following properties: an average reflection factor in the blue region over a wavelength range of 420 nm to 450 nm that is greater than or equal to 5% for an angle of incidence of between 0° and 15°; a spectral reflectivity curve for an angle of incidence of between 0° and 15°, said reflectivity curve having a maximum reflectivity at a wavelength less than 435 nm and a full-width at half maximum greater than or equal to 80 nm; and, for an angle of incidence theta of between 0° and 15° and for an angle of incidence theta' of between 30° and 45°, a parameter Delta(theta,theta') defined by the relationship Delta(theta,theta') = 1 - [ Rtheta (435 nm) / Rtheta(435 nm) ], such that said parameter Delta(theta,theta') is greater than or equal to 0.6, wherein Rtheta(435 nm) represents the value of the reflectivity of the main face comprising the filter at a wavelength of 435 nm for the angle of incidence theta, and Rtheta'(435 nm) represents the value of the reflectivity of the main face comprising the filter at a wavelength of 435 nm for the angle of incidence theta'. |
