Waveguide virtual image display
US5224198A · kind A · utility
208Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/1818
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A waveguide virtual image display including image generation apparatus providing a real image at an inlet of an optical waveguide. The real image being reflected a plurality of times within the optical waveguide by diffractive optical elements that magnify and filter the real image and produce a virtual image at a viewing aperture. The display is mounted on an eyeglasses frame for hands-free viewing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.