Ophthalmic lens comprising an antireflective coating with a low reflection in the ultraviolet region
This invention relates to an ophthalmic lens with a low reflection in the ultraviolet region, comprising a substrate with a front main face and a rear main face, said rear main face being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive i...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | This invention relates to an ophthalmic lens with a low reflection in the ultraviolet region, comprising a substrate with a front main face and a rear main face, said rear main face being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than 1.6 and of at least one layer having a refractive index lower than 1.55, wherein:
- the mean reflection factor R UV on said rear face between 280 nm and 380 nm, weighted by the function W(»), is lower than or equal to 5%, preferably is lower than or equal to 4%, for an angle of incidence of 35°,
- the Chroma C* is equal or lower than 4, preferably lower or equal to 3, for an angle of incidence (¸) of 15°. |
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