Process for forming a coated layer on a toric surface of an optical article
US7632432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Nov 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0025
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a process for forming at least one coating layer on a toric surface of an optical article which comprises: providing an optical article 1 having a toric surface comprising a first principal meridian with a lower radius of curvature r and a second principal meridian with a higher radius of curvature R (r<R) and a periphery 2; depositing on the toric surface at least two drops 2a, 2b of the liquid curable composition, each within one of two opposite sectors S1, S2 centered on the first principal meridian of lower radius of curvature r and having an apex angle up to 40°; applying pressure on said pre-measured amount of liquid curable composition to cause said liquid curable composition to spread over the toric surface of the optical article; curing the liquid curable composition; and recovering an optical article coated with at least one coating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.