Systems for and methods of surfacing a composite lens blank with functional layer
US10695887B2 · kind B2 · utility
1Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Aug 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/024
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed are systems and processes for generating a finished or semi-finished lens, such as a spectacle lens, from a lens blank that includes an intermediate functional layer. Some embodiments of the process involve locating the functional layer and positioning the lens blank according to the location of the functional layer. The location of the functional layer can be ascertained by measuring the thickness of one or more layers of the lens blank. The lens blank can be surfaced on one or both sides to form a finished or semi-finished lens. Other embodiments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.