Toric axis alignment machine and method
US6197227A · kind A · utility
12Cited by
37References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Jan 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for practicing the method of making toric contact lenses having a toric axis and ballast axis located on the anterior and posterior surfaces of a lens. Detectable features are formed on the anterior and posterior mold sections corresponding to the location of the toric axis and ballast axis, respectively. An axis alignment tool having detecting means thereon is used to set the mold sections to a known angular position. The desired axial offset is input into a computer which establishes the axial offset between the mold sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.