Three dimensional display viewable in both stereoscopic and autostereoscopic modes
US6449090B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1996 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/361
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A three dimensional display is provided which can. operate in an autostereoscopic mode, requiring no viewing aid, and a stereoscopic mode, requiring a viewing aid such as polarized spectacles. In the autostereosocopic mode, light from illuminators is imaged by lenses through LCD display panels at regions where the left and right eyes of an observer are located. Thus, a two dimensional image displayed on one panel is visible to the right eye of the observer whereas a two dimensional image displayed by the other panel to visible to the left eye of the observer. In the stereoscopic mode, light from the illuminators through the LCD panels is visible throughout an extended region by both eyes of the observer. However, the light from the panels is polarized in mutually perpendicular directions and the spectacles comprise polarizers for the left and right eyes which substantially pass only light corresponding to the left and right images, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.