Method and apparatus for bevelling or grooving ophthalmic lenses
US4612736A · kind A · utility
18Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1984 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Oct 16, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B9/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The peripheral edge of an ophthalmic lens is maintained in contact with a bevelling or grooving wheel while being rotated about an axis of the lens parallel to the axis of the bevelling wheel whereby a bevel or groove is formed in said peripheral edge. The ophthalmic lens is capable of relative axial displacement relative to said bevelling wheel. By way of a force or displacement sensor, the relative axial position of the ophthalmic lens with respect to the bevelling wheel can be made subject to the axial component of reaction forces generated between the lens and the bevelling wheel in their mutual contact zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.