High contrast optical film and devices including the same
US11156757B2 · kind B2 · utility
5Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Feb 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical films are disclosed that include a plurality of interference layers. Each interference layer reflects or transmits light primarily by optical interference. The total number of the interference layers is less than about 1000. For a substantially normally incident light in a predetermined wavelength range, the plurality of interference layers has an average optical transmittance greater than about 85% for a first polarization state, an average optical reflectance greater than about 80% for an orthogonal second polarization state, and an average optical transmittance less than about 0.2% for the second polarization state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.