Optical filter
US10444546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Sep 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filter including a polymeric multilayer optical film is provided. The optical film has a reflection band having a reflection band edge that is, independent of location, one of a short wavelength band edge at a short wavelength side of the reflection band and a long wavelength band edge at a long wavelength side of the reflection band. The reflection band edge has a normal incidence reflection band edge wavelength that varies with location and that is a first wavelength at a first location and a second wavelength at a second location different from the first location. The first wavelength may be higher than the second wavelength by at least 2 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.