Method for stabilizing refractive index profiles using polymer mixtures
US7772297B2 · kind B2 · utility
0Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2009 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Jan 28, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00009
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making an optical element comprises polymerizing a first monomer to form a first polymer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and polymerizing a second monomer in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the first polymer and the refractive index profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.