Optical lenses with selective transmissivity functions
USRE38402E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1999 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Nov 16, 2019 |
Classification
- Technology area (CPC —)General
Abstract
An opthalmic spectacle or contact sharp cut-on orange lens that improves visual acuity and substantially reduces eye damage in a bright sunlit environment. The lenses substantially eliminate ultraviolet radiation and blue light shorter than <DEL-S DATE="20040127" ID="DEL-S-00001"/>515<DEL-E ID="DEL-S-00001"/> <INS-S DATE="20040127" ID="INS-S-00001"/>520 <INS-E ID="INS-S-00001"/>nm. The ultraviolet radiation has been implicated as a cause of cateractogenisis. The blue light is implicated in senile macular degenerations, night blindness and snow blindness. The lens is substantially transparent to wavelengths greater than <DEL-S DATE="20040127" ID="DEL-S-00002"/>636<DEL-E ID="DEL-S-00002"/> <INS-S DATE="20040127" ID="INS-S-00002"/>600 <INS-E ID="INS-S-00002"/>nm which are most useful for high visual acuity in bright sunlit environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.