Loading...
Please wait, while we are loading the content...
Similar Documents
Method for Manufacturing An Optical Device
| Content Provider | The Lens |
|---|---|
| Abstract | An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 µm and less or equal to 0.3 µm and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2° and less or equal to 1.2°. A method for manufacturing an optical device using said optical article. |
| Related Links | https://www.lens.org/lens/patent/106-829-075-158-338/frontpage |
| Language | English |
| Publisher Date | 2017-04-05 |
| Access Restriction | Open |
| Alternative Title | Verfahren Zur Herstellung Einer Optischen Vorrichtung Procédé De Fabrication D'un Dispositif Optique |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2015-09-29 |
| Agent | Cabinet Plasseraud |
| Applicant | Essilor Int |
| Application No. | 15306531 |
| Claim | An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface facing each other, wherein the convex and/or the concave optical surface(s) is (are) a () receiving surface(s) intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness, R a , greater or equal to 0.01 µm and less or equal to 0.3 µm and/or wherein the said receiving surface has a profile roughness root mean square slope, R dq , greater or equal to 0.2° and less or equal to 1.2°. The optical article as claimed in claim 1, according to which the pressure sensitive adhesive layer and of the thermoplastic film intended to be simultaneously laminated are in the form of a multi-layered film where the pressure sensitive adhesive layer is arranged on the thermoplastic film. The optical article as claimed in claim 1 or in claim 2, according to which the receiving surface has a mean spacing between peaks, called RSM, according to following equation: for example RSM ≥ 0.64 x R a , or for example RSM ≥ 0.58 x R a + 0.007. An optical device comprising an optical article as claimed in any of preceding claims, a pressure sensitive adhesive layer and a thermoplastic film, wherein the pressure sensitive adhesive layer is adhered on a receiving surface of the optical article and the thermoplastic film is arranged on the pressure sensitive adhesive layer thanks to simultaneous lamination. The optical device as claimed in claim 4, according to which the thickness of the pressure sensitive adhesive layer is greater or equal to 20 µm and less or equal to 250 µm, for example greater or equal to 25 µm and/or less or equal to 75 µm, and the thickness of the thermoplastic film is greater or equal to 30 µm and less or equal to 500 µm, for example greater or equal to 80 µm and/or less or equal to 200 µm. A method for manufacturing an optical device comprising following steps: • providing an optical article as claimed in any of claims 1 to 3; • providing a pressure sensitive adhesive layer and a thermoplastic film; • laminating the pressure sensitive adhesive layer and the thermoplastic film directly on a receiving surface of the optical article so as the pressure sensitive adhesive adheres on said receiving surface and so as the thermoplastic film is arranged on the pressure sensitive adhesive. The method for manufacturing as claimed in claim 6, according to which the provided pressure sensitive adhesive layer and thermoplastic film are in the form of a multi-layered film where the pressure sensitive adhesive layer is arranged on the thermoplastic film. The method for manufacturing as claimed in any of claims 6 or 7, according to which the thermoplastic film is a part of a structured film that further comprises a coating, said coating being arranged on a face of the thermoplastic film. The method for manufacturing as claimed in any claims 6 to 8, according to which the said method for manufacturing further comprises a step of providing at least a supplementary layer on a surface of the optical device where a pressure sensitive adhesive layer and a thermoplastic film have previously been laminated, wherein said at least one supplementary layer is chosen within the list consisting of a thermoplastic film, a hard coat layer, a primer layer, a tinting layer, a photochromic layer, a polarized layer, a liquid crystal-layer, an electro-chromic layer, an anti-static layer, an anti-reflective layer, a tinted layer, a selective filter for filtering one or more wavelength ranges, a top coat layer, an anti-smudge, an anti-fog layer, an anti-rain layer, a hydrophobic layer or a combination thereof. The method for manufacturing as claimed in any of claims 6 to 9, in which, either the thermoplastic film or the pressure sensitive layer comprises a further optical property, by addition or presence of at least a dye, a pigment, an absorber, a photochromic dye. The method for manufacturing as claimed in any of claims 6 to 10, according to which the optical article is previously manufactured from a semi-finished optical article to provide a receiving surface thanks to a machining process of the semi-finished optical article which comprises at least one of roughing step and a fining step, and no more than two steps selected from a roughing step, a fining step and a roughness erasing step. The method for manufacturing as claimed in preceding claim, according to which the machining process of the semi-finished optical article only comprises a roughing step. The method for manufacturing as claimed in any claims 6 to 12, according to which the said method for manufacturing comprises a preliminary step of providing a supplied optical article comprising a convex and a concave optical surface facing each other, followed by a control step and by a decision making step wherein: • the control step comprises determining the roughness of a surface of the supplied optical article which is intended to be a receiving surface; • the decision making step comprising following sub steps: i. comparing the previously determined roughness of said optical surface to the one of a receiving surface of an optical article according to any of claims 1 to 3; ii. providing the supplied optical article to the providing step of the method for manufacturing according to claim 6 if the roughness requirements of one of claims 1 to 3 are fulfilled and providing the supplied optical article to a complementary step if the roughness requirements of one of claims 1 to 3 are not fulfilled. The method for manufacturing as claimed in preceding claim, according to which determining the roughness of a surface which is intended to be a receiving surface is implemented according to a method chosen in the list consisting of measuring the roughness of said surface; deducing the roughness of said surface on the basis of previous manufacturing data of said surface; comparing said surface with a surface of known roughness; deducing the roughness of said surface on the basis of the roughness of a sample surface manufactured previously using similar manufacturing data. The method for manufacturing as claimed in claim 13 or claim 14, according to which the complementary step is chosen within the list of rejecting the supplied optical article and further machining the surface which is intended to be a receiving surface so that the roughness of said surface fulfils the roughness requirements of one of claims 1 to 3 after said machining step in order to provide the supplied optical article to the providing step of the method for manufacturing according to claim 6. |
| CPC Classification | OPTICAL ELEMENTS; SYSTEMS OR APPARATUS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE SPECTACLES;SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES;CONTACT LENSES |
| Extended Family | 106-829-075-158-338 050-584-850-129-851 009-142-241-769-541 128-824-393-362-575 052-384-633-711-729 052-298-568-318-70X 161-945-595-467-700 117-353-100-985-668 016-772-120-112-295 018-732-386-775-893 015-684-807-870-600 040-696-914-306-970 130-992-384-406-155 197-000-511-991-307 062-278-054-280-18X 168-339-420-425-677 |
| Patent ID | 3150364 |
| Inventor/Author | Felten Yohann Marchal Jeanne Gacoin Eric De Sousa Manuela Saulny Jonathan |
| IPC | B29D11/00 G02B1/04 |
| Status | Active |
| Owner | Essilor International |
| Simple Family | 106-829-075-158-338 050-584-850-129-851 009-142-241-769-541 128-824-393-362-575 052-384-633-711-729 052-298-568-318-70X 161-945-595-467-700 117-353-100-985-668 016-772-120-112-295 018-732-386-775-893 015-684-807-870-600 040-696-914-306-970 130-992-384-406-155 197-000-511-991-307 062-278-054-280-18X 168-339-420-425-677 |
| CPC (with Group) | G02B1/041 B29D11/00009 B29D11/0073 B29D11/00865 G02C2202/16 B29D11/00961 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent Application Publication |
