Method for the manufacture of contact lenses

Details Method for the manufacture of contact lenses Method for the manufacture of contact lenses

B - Operations, Transporting

29

D

18/104, 18/716

B29D 11/00 (2006.01) B29C 33/38 (2006.01) B29C 45/04 (2006.01) B29C 45/26 (2006.01)

Patent

CA 2040907

V7-1804 6/A/TIT 15 Method for the manufacture of contact lenses Abstract In the process described, a limited number of shaping tools (T1, T2, ......, TN) having standardised parameters (for the production of the following contact lens parameters: contact lens diameter, radius of curvature of the rear face of the contact lens, vertex refraction) is used for the manufacture of standardised moulds (M1, M2, ....... , MN ) . Preferably by material-removing machining of the moulds, moulds are produced that have additional altered parameters. The multiplicity of moulds produced in that manner is used for the one-step manufacture (F) of contact lenses (L) having different parameters that largely do not have to he finished. (Fig. 1)

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