Lens mold assembly

Details Lens mold assembly Lens mold assembly

1988-05-17

1990-05-01

Housel, James C.

Static molds

Including destructible feature

249 83, 249134, 264 17, 264 23, 264 27, 425808, B29D 1100

Patent

active

049212052

ABSTRACT:
A mold assembly for casting optical lenses in which an integral lens blank-mold cup unit is created by placing liquid monomers in a cup mold which tightly adheres to polymerized lens material. A radial die is disposed upon the cup mold to contain the monomers during polymerization and to provide the polymerized material with an optical surface. A contact lens is manufactured from the integral lens blank-mold cup unit by machining off the first cup and then extraneous portions of the blank to create a finished lens.

REFERENCES:
patent: 3806079 (1974-04-01), Beattie
patent: 4188353 (1980-02-01), Neefe
patent: 4247492 (1981-01-01), Neefe
patent: 4441795 (1984-04-01), Lobdell
patent: 4565348 (1986-01-01), Larsen

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