PROCESS FOR MANUFACTURING A SERIES OF OPHTHALMIC LENSES AND SHEET OF FILM USED IN SUCH A PROCESS
2 Assignments
0 Petitions
Accused Products
Abstract
According to a process for manufacturing a series of ophthalmic lenses, each lens consists of a substrate and a film portion (3) attached to the substrate. The characteristics specific to each lens are obtained by functionalizing the film portion. Film functionalization is carried out when the film is in the form of a large planar sheet (2), and then each portion is cut from the sheet. To obtain economic lens manufacture, with a good production yield, the film portions have, right from the start of the process, dimensions corresponding substantially to the housing of a frame into which each lens is intended to be fitted.
34 Citations
75 Claims
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1-48. -48. (canceled)
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49. Process for manufacturing a series of ophthalmic lenses intended to be fitted into respective housings of frames, each lens consisting of a substrate and a functionalized film portion attached to the substrate, the process comprising the following steps:
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(i) for each ophthalmic lens of the series, collecting the following data; dimensions of the frame housing into which said lens is intended to be fitted, and optical characteristics of the functionalized film portion corresponding to said lens; (ii) determining an arrangement of the film portion in a planar sheet of said film, each portion having substantially the dimensions of the frame housing for the corresponding lens; (iii) depositing at least one functional material on each film portion within the sheet of film, said portion having a planar configuration, and said material being suitable for obtaining the optical characteristics of said portion, so as to functionalize said film portion; (iv) cutting the functionalized film portions out from the sheet of film; and (v) assembling each functionalized film portion with the substrate of the corresponding lens. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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- 65. Planar, and possibly pliable, sheet of film comprising a series of film portions functionalized by at least one functional material arranged on each portion, said portions being suitable for being combined with respective substrates so as to form ophthalmic lenses, and said portions having respective dimensions corresponding approximately to frame housings into which said lenses are intended to be fitted.
Specification