Polarizer constructions and display devices exhibiting unique color effects
US6768586B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2003 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133626
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarizer construction is disclosed that includes a reflective polarizer disposed on a first side of the construction to transmit light having one polarization and reflect light having an orthogonal polarization, and one or more colored dichroic polarizers disposed on a second side of the construction. The one or more colored dichroic polarizers are arranged so that when the construction is illuminated from the first side, an observer viewing the construction from the second side will observe a first spectral distribution of visible light, and when the construction is illuminated from the second side, an observer viewing the construction from the second side will observe a second spectral distribution of visible light different from the first spectral distribution. Various display constructions using colored polarizers to achieve color changing and image reversal effects are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.