Plastic lens generator and method
US5217335A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1990 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Apr 24, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/305712
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The generator for plastic lenses comprises a rotatable chuck for rotating an optical lens blank on a first axis. A drive system displaces the chuck and thereby the lens blank generally transverse to the first axis. A cutter is operably associatable with the chuck for engaging the lens blank and causing shaping thereof. The cutter includes a high speed rotary element rotatable on a second axis angularly disposed relative to the first axis. A second drive system for selectively displacing the cutter parallel to the first axis is provided. A computer control is operably associated with the first and second drive systems for coordinating displacement of the associated chuck and cutter for causing a selected curvature to be generated on the blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.