Low-cost circular polarizing eyewear
US7517081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | May 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and system of providing circularly polarized eyewear is provided. The eyewear comprises substantially rigid material configured to maintain lensing material, such as card stock or plastic. The lensing material comprises polarizing lensing material located proximate the substantially rigid material, and retarder lensing material matched to the polarizing lensing material. The retarder lensing material is positioned adjacent to the polarizing lensing material such that each eye of a user sees an intended image, and an unintended image is blocked thereby when used in conjunction with suitably polarization encoded projected images. The polarizing lensing material and retarder lensing material are fixedly maintained in association with the substantially rigid material and are configured to be provided free of lamination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.