High refractive index film and optical interference film
US11226437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Feb 22, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/286
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are a high refractive index film including a high refractive index layer including a binder and flat metal particles, in which a value obtained by dividing an average particle diameter of the flat metal particles by an average thickness is 3 or more, a main plane of the flat metal particles is plane-oriented in a range of 0° to 30° with respect to a surface of the high refractive index layer, a volume fraction of the flat metal particles of the high refractive index layer is 20 volume % or more, and the flat metal particles are stacked in two or more layers, and an optical interference film using the high refractive index film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.