Controlling light transmission with polarization and ellipticity adjustment
US7965443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2010 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/012
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light transmission may be controlled using a system that includes a linear polarizing means and an ellipticity increaser associated with a display. The ellipticity increaser is configured and oriented with respect to the linear polarizing means for increasing the ellipticity of light passing from the linear polarizing means through the ellipticity increaser. The system also includes an ellipticity adjuster and a linear polarizer spaced away from the display. The ellipticity adjuster is oriented with respect to the linear polarizer for increasing the ellipticity of light passing from the linear polarizer through the ellipticity adjuster. The ellipticity increaser and adjuster are disposed between the linear polarizing means and the linear polarizer, and are configured and oriented with respect to each other for reducing ellipticity of light passing from the linear polarizing means through the ellipticity increaser and adjuster to the linear polarizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.