Optical lens comprising an antireflective coating with multiangular efficiency
US11573431B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2017 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Jul 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/115
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an optical lens comprising a substrate with a front main face and with a rear main face, at least one of the main faces being coated with an antireflection coating, such that in the range [0°-50° ] of angles of incidence θ, the mean light reflection factor Rv(θ) on said coated main face presents a minimum value Rvmin for an angle of incidence θmin, comprised in the range [20°-50° ], and Rvmin/Rv(15°)<0.95, Rv(15°) being the mean light reflection factor for an angle of incidence θ of 15° on said coated main face. The optical lens is also useful to inhibit reflection of light in the ultraviolet range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.