Method of minimal stress inducing ophthalmic lens blocking
US12103131B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Mar 23, 2020 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00009
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and associated implementing system eliminates much of the stress presently introduced by the bonding of ophthalmic lens blanks, or blanks to a holding device, namely a metal block. The method of attaching ophthalmic lens blanks to a blocking assembly comprises the steps of shaping a blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens, wherein the blocking assembly is not attached directly to the ophthalmic lens blank during shaping of the blocking assembly; and following the shaping of the blocking assembly, attaching the lens blank to the shaped blocking assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.