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    • 5. 发明申请
    • OPHTHALMIC LENS
    • 眼镜
    • WO2013171434A1
    • 2013-11-21
    • PCT/FR2013051073
    • 2013-05-16
    • ESSILOR INT
    • DE AYGUAVIVES FRANCISCOMAURY HELENE
    • G02C7/10G02B1/11G02B5/28G02C7/02
    • G02C7/107G02B1/11G02B5/26G02B5/283G02C7/02G02C7/102G02C7/104
    • 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'.
    • 本发明涉及一种具有主正面和主后表面的眼科镜片,其中一个主面包括一个过滤器,该滤镜具有以下特性:在420nm波长范围内的蓝色区域中的平均反射系数至 对于0°至15°之间的入射角,450nm为大于或等于5%; 在0°和15°之间的入射角的光谱反射率曲线,所述反射率曲线在波长小于435nm时具有最大反射率,半峰全宽大于或等于80nm; 并且对于0°和15°之间的入射角θ和对于入射角θ'在30°和45°之间的入射角θ,由Δ(θ,θ')定义的参数Delta(θ,θ'), )= 1 - [Rthta(435nm)/ Rtata(435nm)],使得所述参数Δθ(θ,θ')大于或等于0.6,其中Rθ(435nm)表示反射率的值 该主面包括对于入射角为435nm波长的滤光器,并且Rθ(435nm)表示包含滤波器在波长435nm处的入射角的入射角的反射率的值 THETA”。