EssilorLuxottica had nine patents in 3D printing during Q3 2023. EssilorLuxottica SA has filed a patent for a method of decorating ophthalmic articles. The method involves providing an ophthalmic article with a substrate that has a first outer surface. This surface has a decoration zone outside the central vision zone and contains topographic structures for forming a decorative pattern. Thin layers with a different refractive index are then deposited on the outer surface to create an interferometric mirror. GlobalData’s report on EssilorLuxottica gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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EssilorLuxottica grant share with 3D printing as a theme is 44% in Q3 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Method for decorating an ophtalmic article and related ophtalmic article (Patent ID: US20230273462A1)
EssilorLuxottica SA has filed a patent for a method of decorating ophthalmic articles. The method involves providing an ophthalmic article with a substrate that has a first outer surface. This surface contains at least one decoration zone outside the central vision zone of the article, with topographic structures that form a decorative pattern. Thin layers with a different refractive index than the substrate are then deposited on the first outer surface to create an interferometric mirror.
The topographic structures in the decoration zone have a height/depth variation profile that is greater than the total thickness of the interferometric mirror. These structures can include ribs, grooves, straight lines, curved lines, pyramids, needles, or other geometric forms. They can also be arranged in periodic patterns. The height/depth variation profile of the structures is between 20 µm and 200 µm.
The ophthalmic article can be manufactured through injection molding, with a mold part that forms the first outer surface having negative topographic structures that create the desired decorative pattern on the positive first outer surface. Alternatively, the topographic structures can be engraved, deposited through 3-D printing, or created by depositing a heated metal wire or grid on the polished ophthalmic article.
The thin layers forming the interferometric mirror can be deposited using physical vapor deposition (PVD) or chemical vapor deposition (CVD). The ophthalmic article may also include a polarizing layer.
The method described in the patent can be used to manufacture decorated ophthalmic articles, including sunglasses. The decorated articles can have a polarization layer and may also include a layer of tinted plastic material. In the case of sunglasses, the decoration zone is located above the central vision zone.
In summary, EssilorLuxottica SA has developed a method for decorating ophthalmic articles by providing a substrate with topographic structures in a decoration zone and depositing thin layers to create an interferometric mirror. The method allows for the creation of decorative patterns on the outer surface of ophthalmic articles, including sunglasses.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
