Head-mounted display apparatus with a single image display device
US5808802A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1997 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Feb 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/286
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head-mounted display apparatus comprises an image display device, a beam splitter for partially transmitting and partially reflecting light from the image display device, a reflection mirror, and a first and a second magnifying lenses. The image display device is disposed in front of a right eye of an observer and displays images on the basis of video signals from a video signal source. The beam splitter, disposed between the image display device and the right eye, splits the light from the image display device into two light beams. The reflection mirror, disposed in front of a left eye, reflects the light from the beam splitter to the left eye. The first and the second magnifying lenses are respectively disposed between the beam splitter and the right eye and between the reflection mirror and the left eye, thereby enabling the observer to see enlarged virtual image formed at a certain distance from the eyes. The head-mounted display apparatus of the present invention can also provide a stereoscopic vision by displaying images on the image display device on the basis of the principle of binocular parallax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.