Method for manufacturing ophthalmic lenses
US6241922A · kind A · utility
5Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | May 13, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00413
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides methods for producing ophthalmic lens by casting resin layers onto an optical preform. Resin containment in the mold assembly is achieved by the use of a high viscosity resin bead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.