TH54839B - A process for placing a layered structure on top of a lens. - Google Patents

Abstract

DC60 This invention is about the improvement of the process of placing a layered structure (1) on the surface. Convex of the lent (10) after heat forming of the layered structure. Curvature direction of The layered structure is reversed, then the structure is placed on the lens surface by pushing the structure (1) against the lens surface continuously, starting from the point of contact between the convex faces of the Structure with the convex surface of the lens The curvature direction of the layered structure is reversed again. In order to return to the original curvature direction resulting from thermal molding, then the internal stress The layered structure is minimized and the structure is flawlessly assembled into the lens. Figure 4c This invention deals with the improvement of the process of placing the layered structure (1) on the surface. Convex of the lent (10) after heat forming of the layered structure. Curvature direction of The layered structure is reversed, then the structure is placed on the lens surface by pushing the structure (1) against the lens surface continuously, starting from the point of contact between the convex faces of the Structure with the convex surface of the lens The curvature direction of the layered structure is reversed again. In order to return to the original curvature direction resulting from thermal molding, then the internal stress The layered structure is minimized and the structure is flawlessly assembled into the lens. Figure 4c

Claims (9)

1. A process for placing a layered structure (1) on the convex surface of a lens (10), which consists of the following steps / a / plane-shaped layered structure / b. / Thermoforming of a layered structure to provide a curvature, one concave surface (S1) and a second (S2) convex surface / c / arc inversion of the layered structure to provide the surface Such one duty (S1) is changed to Such convex and secondary surface (S2) are concave in / d / bringing one surface (S1) of the layered structure (1) into contact with the lens surface (SO) at the initial contact point (A) and /. e / The one surface placement of the layered structure (S1) is placed on the lens surface (SO) through pressure applied to the second surface of the layered structure (S2) starting from the initial contact point. Where the surface The first and second of the layered structure are reverted to the inward and convex shapes respectively at the periphery of the increased contact zone 2.Process according to claim 1, where / step / e / is performed so that no pressure is fed down. 3. The process of claim 1 or 2 where the / e / step is performed with a layered structure (1 ) That is heated 4. The process according to claim 3, where the temperature of the layered structure (1) is equal to or At least 75 ° C during the / e / Stage 5. Process for one of the previous claims. Where the surface (SO) lenses have a radius of curvature less than 305 mm, which is better, should be less than 100 mm, and preferably less than 75 mm. 6. Which of the previous claims? One Where the / d / and / e / procedure is performed with an adhesive layer (20) provided between the lens surface (S0) and the first surface of the layered structure (S1). According to claim 6, where an adhesive layer (20) is placed on the surface of the lens (S0) and / or on one surface of the layered structure (S1), 8.Process according to claim 6, where The adhesive layer (20) consists of a pressure-sensitive adhesive material. 9. Process according to one of the previous claims. Where pressure is fed onto the surface Two of the layered structure (S2), during the / e / process, through the recombinant membrane (306), is inflated and pressed on the second surface of the layered structure within the increased contact zone. 1 0. Process for any of the previous claims. Where the / b / procedure will be performed in The manner that between the / b / and / c / procedures / arcs of a layered structure (1) at at least one point in the surface. One function of such a layered structure (S1) is greater than or equal to the lens surface arc (S0) at a point in the lens surface corresponding to at least one such point in the surface. One duty Of layered structures after / e / 1 step 1. Process according to claim 10, where the lens surface (S0) will have a constant curvature and where the / b / procedure is performed in such a way that between the / b / and / c / steps A layered structure (1) will have an arc larger or equal to the lens surface arc (S0) at any point on one surface. Of a class 1 structure 2. Process according to claim 10, where the lens (10) will be a supplementary lens to increase size, and the surface lens (S0) will have a arc at the close-up point higher than the arc of the lens surface. At the point Distance vision And where the / b / procedure is performed in such a way that during the / b / vs / c / step, the layered structure (1) has an arc larger than the arc of the lens surface (S0 ) At close-up view point 1 3.Process for any of the previous claims Where the layered structure (1) consists of a polar separation film (2) 1. 4.Process according to claim 13, where the polar separation film (2) is composed primarily of polyvinyl alcohol or polyethylene terephthalate 1. 5. Process according to claim 13 or 14, where the layered structure (1) also consists of a protective film (3) placed on one side of the polar separation film (2) 1. 6.Process according to claim 15, where the protective film (3) is primarily composed of cellulose styrene acetate or cellulose acetate butyrate 1. 7. Process according to claim 15 or 16, where the layered structure (1) consists of two protective films (3,4), which are placed on either side of the polar separation film (2) 1. 8. Process on any of the previous claims. Where the layered structure (1) also consists of at least one functional coat on the aforementioned second surface of the layered structure (S2) 1. 9. Process according to one of the preceding claims where the lens (10) is an optic.