Optical film and optical laminate using same
US10120206B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/108
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
[Problem] The present invention provides eyewear, such as polarized sunglasses, having cholesteric liquid crystal layers, wherein the eyewear has a metallic tone and antiglare properties, minimizes the reduction in light-polarizing element absorptive capability that is associated with circular polarization, and is moreover unaffected by external degrading factors such as sebum, moisture, and salt air.[Solution] This optical film is characterized by being provided with a light-reflecting layer R comprising a cholesteric liquid crystal layer that has right-handed helical orientation, a light-reflecting layer L comprising a cholesteric liquid crystal layer that has left-handed helical orientation, and a polarizing element layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.