OPTICAL ARTICLE WITH VERY LOW REFLECTION IN THE VISIBLE REGION AND IN THE NEAR INFRARED REGION

The invention relates to an optical article comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered interferential coating comprising a stack of at least one high refractive index layer (HI) having a refract...

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Bibliographic Details
Main Authors BOLSHAKOV, Ilya, TROTTIER-LAPOINTE, William
Format Patent
LanguageEnglish
French
German
Published 29.03.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The invention relates to an optical article comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered interferential coating comprising a stack of at least one high refractive index layer (HI) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (LI) having a refractive index layer lower than 1.55, characterized in that said multilayered interferential coating has a mean reflection factor for wavelengths ranging from 445 nm to a predetermined maximum wavelength lower or equal to 1185 nm, noted Rm (445 - ≤1185), that is lower than or equal to 2.9%, preferably 2.6% at an angle of incidence lower than or equal to 45°.
Bibliography:Application Number: EP20210722927