Optical lens in transparent organic polymer material with high refractive index and high Abbe number
US6533815B1 · kind B1 · utility
6Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The current invention discloses an ophthalmic lens composed of a transparent organic polymer material with a high refractive index and a high Abbe number by copolymerization of a mixture of monomers comprising at least one polythiol monomer and at least one monomer with a high Abbe number comprising two to four bridged cyclic end groups comprising an intracyclic ethylenic double bond or a linear or branched aliphatic residue comprising an ethylenic unsaturation, preferably a vinyl or ethylidene group bonded directly to a carbon of the ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.