Selenium-containing transparent optical material
US6303747A · kind A · utility
1Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A transparent optical material containing at least one selenium atom, a plastic lens comprising the transparent optical material, and methods for preparing them. In addition, there are also disclosed novel selenium-containing compounds represented by the following formulae (1), (2) and (4) which are useful for the transparent optical material and the plastic lens: ##STR1## wherein symbols are as defined in the specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.