Collection of ophthalmic lens pairs and ophthalmic lenses having residual reflections exhibiting colors of different intensity
US7452076B2 · kind B2 · utility
4Cited by
3References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2007 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jan 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Each lens of a pair of lenses is provided on at least one of its faces with an antireflection coating having a luminous reflection factor Rv that is 2.5% or less, having residual reflections exhibiting the same perceived color, the hue angle (h) for the antireflection coating of one lens varying by not more than 60° as compared to the antireflection coating of the other lens, and: The invention can be applied to spectacle glasses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.