Title:
DEVICE FOR MOLDING OPHTHALMIC LENS MATERIAL AND METHOD OF MOLDING THEREWITH
Document Type and Number:
WIPO Patent Application WO/1999/019128
Kind Code:
A1
Abstract:
A device for molding ophthalmic lens material, constituted of: a bottom force (6) comprising a base portion and a column portion having on top thereof a molding plane corresponding to one plane of the lens material; a top force (8) which defines an intermediate compartment (18) for filling a monomer composition between itself and the base portion of the bottom force, has a base portion adapted for forming an external compartemnt (20) for containing therein the monomer composition on the side of an upper opening of the intermediate compartment and a column portion, and defines a molding cavity (22) having a communication section (24) between the molding planes of the top and bottom forces; and at least three through-holes (16). This device serves to simplify the structure of a mold for molding ophthalmic lens material by means of mold polymerization and realize uniform lens configuration with good transfer efficiency.
Inventors:
YAMASHITA KEIJI (JP)
OJIO TATSUYA (JP)
KAWAGUCHI TOHRU (JP)
OJIO TATSUYA (JP)
KAWAGUCHI TOHRU (JP)
Application Number:
PCT/JP1998/004601
Publication Date:
April 22, 1999
Filing Date:
October 13, 1998
Export Citation:
Assignee:
MENICON CO LTD (JP)
YAMASHITA KEIJI (JP)
OJIO TATSUYA (JP)
KAWAGUCHI TOHRU (JP)
YAMASHITA KEIJI (JP)
OJIO TATSUYA (JP)
KAWAGUCHI TOHRU (JP)
International Classes:
B29C39/26; B29C39/02; B29C39/24; B29C39/40; B29D11/00; B29L11/00; (IPC1-7): B29C39/02; B29C39/24; B29C39/26
Foreign References:
| JPH01184111A | 1989-07-21 | |||
| JPH01316226A | 1989-12-21 | |||
| JPH04290706A | 1992-10-15 |
Attorney, Agent or Firm:
Asahina, Sohta (Tanimachi 2-chome Chuo-ku, Osaka-shi Osaka, JP)
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