Stereoscopic optical element including a birefringent photosensitive film having regions of mutually different prescribed slow axes or fast axes, and an image display device using the same
US6046787A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical element includes a transparent substrate having a main surface, a first birefringent photosensitive film arranged on a first region of the main surface such that a slow axis or a fast axis is aligned with a prescribed first direction, and a second birefringent photosensitive film formed on a second region different from the first region of the main surface such that the slow axis or the fast axis is aligned with a prescribed second direction different from the first direction. The first and second directions are different by 90.degree. (.+-.20.degree., more preferably, .+-.10.degree.). An image display device employing the optical element further includes an image forming device such as a liquid crystal display device, and with the optical element arranged on an image display screen, stereoscopic imaging is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.