Method and apparatus for making prescription eyeglass lenses
US4989316A · kind A · utility
61Cited by
24References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1987 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Mar 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/30112
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a method and apparatus for making a lens for a pair of prescription eyeglasses a lens blank is shaped and finished on one of its major surfaces through the use of a machine controlled by the prescription information and with a new expendable lap being made each time a new lens is wanted. A machine for cutting a lens blank and/or a lap blank is controlled in three axes by a set of point data related to and obtained in response to the input into the control system for the machine or prescription information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.