Optical film and polarizing beam splitter
US11726246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Sep 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical films and polarizing beam splitters including the optical films are described. In some cases, the optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack, each optical stack comprising a plurality of polymeric interference layers reflecting and transmitting light primarily by optical interference in a same predetermined wavelength range. Each optical stack has interference layers closer to the one or more spacer layers that reflect longer wavelengths and interference layers farther from the one or more spacer layers that reflect shorter wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.