Injection mold design, method for in-mold coating of lenses, and coated lenses
US7922942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | May 18, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0033
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for coating lenses within an injection molding machine having a concave optical insert with a perimeter edge that meets the receiver ring in an annular contact region. A channel is formed throughout the annular contact region. When molding a lens with the apparatus, and according to the method, a closed-loop coating containment lip is formed by the channel. After the lens has solidified and the mold is opened, a predetermined volume of coating solution is applied and the mold is re-clamped. A uniformly thin layer of coating is cured on to the convex lens surface by avoiding coating run off and preventing mold contamination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.