Optical lens mold and method of making the mold
US5611969A · kind A · utility
13Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Mar 9, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In this method of making a mold for molding an optical lens an annular closure sleeve is fitted around two molding shells and cooperates with them to define the required molding cavity. The closure sleeve is made from a heat shrinkable synthetic material and is heated to shrink it onto the molding shells. Applications of the method include molds for molding ophthalmic lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.