Title:
METHOD FOR MANUFACTURING A SEMIMANUFACTURE INTENDED FOR FORMING AN OPHTHALMIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/038939
Kind Code:
A3
Abstract:
A method for manufacturing a semimanufacture (18) intended for manufacturing therefrom an intraocular lens or a contact lens (10), wherein a cup bottom part (12) and a cup top part (14) are injection molded, at least one of the two cup parts being an optical cup part which is provided with an optically accurately defined surface (16), wherein monomer is injected into the cup bottom part, and the cup top part is placed on the cup bottom part so as to form a cast mold filled with monomeric material. Next, the monomer in the cast mold is cured to form a lens blank (18), and the cup top part and the cup bottom part are separated from each other for exposing the formed lens blank, which is bonded to the optical cup part during curing, to provide a semimanufacture assembly, to be worked with a lathe, which comprises the optical cup part and the lens blank. Then, the lens blank can undergo a turning operation to form a lens having two optically accurately defined surfaces.
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Inventors:
VAN DIJK EMERENTIUS MARIA JOSEPHUS ANTONIUS (NL)
Application Number:
PCT/NL2013/050643
Publication Date:
May 30, 2014
Filing Date:
September 06, 2013
Export Citation:
Assignee:
INNOVALENS B V (NL)
International Classes:
B29D11/00
Foreign References:
| US4647261A | 1987-03-03 | |||
| US4584148A | 1986-04-22 | |||
| US4247492A | 1981-01-27 | |||
| GB2040213A | 1980-08-28 |
Other References:
See also references of EP 2892711A2
Attorney, Agent or Firm:
JANSEN, C.M. (Johan de Wittlaan 7, JR Den Haag, NL)
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