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Ophthalmic lens comprising a multilayered interferential coating and manufacturing method thereof

A kind of ophthalmic lens, multi-layer technology, applied in the direction of coating, glasses/goggles, metal material coating technology, etc., can solve the problem of no limitation of transmittance

Active Publication Date: 2020-02-18
ESSILOR INT CIE GEN DOPTIQUE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently, conventional anti-reflection coatings are often designed and optimized to reduce reflections on lens surfaces in the visible region (typically in the spectral range from 380nm to 780nm), but not limited to the near-infrared (NIR) and ultraviolet (UV) regions. ) characteristics of the transmittance of the region

Method used

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  • Ophthalmic lens comprising a multilayered interferential coating and manufacturing method thereof
  • Ophthalmic lens comprising a multilayered interferential coating and manufacturing method thereof
  • Ophthalmic lens comprising a multilayered interferential coating and manufacturing method thereof

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[0131] Graphene was used in the following simulations in the form of boron nitride (BN) layers 3 and 4 (see figure 1 , Figure 2a , Figure 3a , Figure 4a ) sandwiched in between, or only deposited on one BN layer 3 (see Figure 5 , Figure 6a , Figure 7a ) on a single monolayer sheet 2.

[0132] The optical properties of graphene (refractive index and absorption coefficient, both as a function of wavelength) were extrapolated from the tabulated properties of graphite.

[0133] Set the thickness to Graphene monolayer 2 is sandwiched between BN layers 3 and 4. For the simulation we considered the 280-2000nm domain which is relevant for applications in the UV range, the visible range as well as the IR range. As far as we know, there is no literature mentioning the light refractive index of individual graphene sheets. Therefore, we use the light refractive index of graphite for the simulation. The light refractive index presented by the BN material is very close to t...

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Abstract

This invention relates to an ophthalmic lens comprising a multilayered interferential coating and to a manufacturing method thereof. The ophthalmic lens comprises: an organic substrate having a frontmain face and a rear main face, and a multilayered interferential coating (30) which is coated on at least one of the front main face and the rear main face. According to the invention, the multilayered interferential coating (30) comprises at least one layer based on graphene (2), which has a uniform thickness between 0.1 nm and 1 nm.

Description

technical field [0001] The present invention relates to an ophthalmic lens comprising a multilayer interference coating and a method for its manufacture. The ophthalmic lens article may especially be an ophthalmic lens. Background technique [0002] Multilayer interference coatings for ophthalmic lenses are well known in the art, and such coatings may, for example, form antireflective coatings or reflective (ie, specular) coatings. [0003] Anti-reflection coatings generally consist of a plurality of thin interference layers, which are usually based on the alternation of layers of dielectric material with a high refractive index and dielectric material with a low refractive index. When deposited on a transparent substrate, the function of such coatings is to reduce their light reflection and thus increase their light transmission. A substrate so coated will thus have its transmitted light / reflected light ratio increased, thereby improving the visibility of objects placed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02G02B1/10G02B1/11
CPCG02B1/10G02B1/11G02C7/02G02B1/111G02B1/115G02B1/116G02B5/0816G02B5/0858G02B5/0866G02C7/107G02C7/14G02B1/16C23C16/26C23C16/342G02C7/024G02C7/10
Inventor M·弗伊雷德H·莫里
Owner ESSILOR INT CIE GEN DOPTIQUE