Method and mold to control optical device polymerization
US7144528B2 · kind B2 · utility
2Cited by
17References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 2004 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and mold assembly to control the polymerization of a cast optical device. The mold assembly includes at least one mold portion having a non-critical surface with fresnel or diffractive geometry. Alternately, a fresnel lens or diffractive lens may be placed at a predetermined distance from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.