Viewing lens and method for treating lenses to minimize glare and reflections for birds with tetra-chromatic vision
US11448797B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2203/35
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A viewing lens and method for treating lenses to minimize glare and reflections for birds with tetra-chromatic vision. The anti-reflection lens is treated to with a coating on the surface. The coating is configured to enable the lens surface to be less perceptible to a bird with tetra-chromatic vision by reducing reflections therefrom. The lens treatment includes applying an anti-reflective coating in multiple coats. The coats comprise an adhesion composition, a low index composition (such as SiO2), a high index composition (such as ZrO2), and a superhydrophobic composition that are applied in subsequent layers of varying nanometer thicknesses. The treated lens exhibits minimal reflection properties in the visible range of the electromagnetic spectrum and almost no reflection in the UV-A range. This creates a lens surface that is difficult for birds with tetra-chromatic vision to see a reflection therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.