Method for optimizing the position of an optical lens in a lens blank
US10359644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Aug 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method includes: providing lens blank data relating to the first, second and peripheral blank surfaces of the lens blank; providing optical lens data relating to the first, second and peripheral optical surfaces of the optical lens; virtually positioning the optical lens in the lens blank in a position so that at least one of the first optical surface or the second optical surface is included within the lens blank; evaluating a manufacturing prism cost function, the machining prism cost function corresponding to a weighed sum of the first manufacturing prism to be used when blocking the lens blank on the second surface to machine the first optical surface and of the second manufacturing prism to be used when blocking the lens blank on the first optical surface to machine the second optical surface. The positioning and evaluation steps are repeated so as to minimize the manufacturing prism cost function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.