Essilor International

Frédéric Guillain

William Trottier-lapointe

Christophe Valenti

Xingzhao Ding

William Trottier-Lapointe

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 50 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. The reflection performance on at least one main face is improved in scotopic conditions, fornear infrared light or for a wide range of angles of incidence.

Optical lens having an enhanced interferential coating and a multilayer system for improving abrasion-resistance

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any TaOlayer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, and a filtering interferential system that selectively reflects or transmits visible light in a narrow range of wavelengths.

Optical lens having a filtering interferential coating and a multilayer system for improving abrasion-resistance

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any TaOlayer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. The mean reflection factor Ron said rear main face between 280 nm and 380 nm, weighted by the function W(λ) defined in the ISO 13666:1998 standard, is lower than 10%, for an angle of incidence of 35°.

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Charenton-le-Pont, France

Frédéric Guillain