Vehicle navigation apparatus providing simultaneous forward and rearward views
US5414461A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/398
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an apparatus for controllably supplying visual information for a viewer, an optical system including ocular glasses corresponding to right and left eyes of the driver (viewer) is provided so that images on a pair of liquid crystal televisions are introduced to the pair of ocular glasses to provide a three-dimensional solid image. Two television cameras are installed on a vehicle so as to be faced in the rearward direction with their bodies juxtaposed to each other. When the vehicle is reversed, a reflectivity of a half mirror is maximized so that a rearward scenery can be viewed via the ocular glasses in the form of a solid image. During the forwarding of the vehicle, a forward field of view is produced for a half mirror with a transmissivity of the half mirror maximized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.