Contact lens
US12164182B2 · kind B2 · utility
0Cited by
14References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2021 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Mar 8, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0032
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present disclosure provides a contact lens comprising a first colourant which is a blue-blocking colourant having an absorption maximum (λmax) in the range of from 415 nm to 455 nm and a second colourant, wherein the second colourant is a polymerizable dye having an absorption maximum (λmax) in the range of from 470 nm to 600 nm, and optionally also comprising a third colourant which is a colourant having an absorption maximum in the range of from greater than 600 nm to 800 nm. A method of making the lens is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.