Blocking device for a semi-finished optical element
US12168278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2018 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | May 3, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/0048
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The blocking device includes a blocking portion configured for blocking the semi-finished optical element and including a support member configured for providing a rigid support to the semi-finished optical element, the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, the support element assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the support member having a contact face onto which the first face of the semi-finished optical element is to be applied; saind blocking portion including at least one of a heating device configured for heating the support element above the predetermined temperature and a cooling device configured for cooling the support element below the predetermined temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.