Back to results
US 2007/0178809 A1Published application
Polishing of optical and non-optical tools for improved mold flow
AssigneeNovartis AG
InventorsStephen Kendig, Dee Anna Honea, James Golinski
Life of this patent
Estimating the term…
Abstract
This invention is related to contact lenses. In particular, the present invention is related to methods for improving mold flow by polishing optical and non-optical tools used to create molds for contact lenses.
Claims10
A method for creating an ophthalmic lens mold comprising
- Polishing a first side of an optical tool, wherein said first side of the optical tool creates the portion of a mold that contacts prepolymers;
- and
- Polishing a second side of an optical tool, wherein said second side of the optical tool does not create the portion of the mold that contacts prepolymers.
A method of creating an ophthalmic lens mold comprising
- Milling rod material to create one or more rough optical tools
- Lathing said optical tools, wherein each optical tool has at least two sides;
- Polishing a first side of an optical tool, wherein said first side of the optical tool creates the portion of a mold that contacts prepolymers;
- and
- Polishing a second side of an optical tool, wherein said second side of the optical tool does not create the portion of the mold that contacts prepolymers.
2 more elements
Dependencies are inferred from the claim text.