Stereoscopic display
US4877307A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Jul 5, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/334
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereoscopic display capable of displaying monochromatic or colored views of moving, three dimensional scenes comprises means for sequentially projecting alternate ones of successive pairs of substantially monochromatic images corresponding to right-eye and left-eye perspectives of the scene at a display rate sufficient to avoid a perception of flicker in the images. A variable polarizer is used to circularly polarize alternate ones of the images in respectively opposite senses synchronously at their projection rate. The images are analyzed by highly-transmissive eyewear comprising at least one pair of oppositely-sensed cholesteric liquid crystal circular polarizers tuned to the particular color wavelength of the images and disposed, one over each eye, to transmit appropriately-polarized images to corresponding eyes and to reflect inappropriately-polarized images away therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.