Optical display system having a Brewster's angle regulating film
US5999314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Nov 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0194
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A head-up display system of an automotive vehicle, comprising outboard-side and inboard-side glass plates constituting a front windshield glass. An intermediate film is disposed between the outboard-side and inboard-side glass plates to bond the glass plates. A polarization-direction changing layer is secured to the inboard surface of the outboard-side glass plate. A Brewster's angle regulating film is secured to the inboard surface of the inboard-side glass plate. The Brewster's angle regulating film has a refractive index different from that of the glass plates. A displaying device is provided to generate a display light of information. Additionally, a light-polarizing device is provided to polarize the display light into S-wave. The display light having S-wave is incident at about Brewster's angle of the Brewster's angle regulating film to the front windshield glass so as to pass through the polarization-direction changing layer and to be reflected at the outboard surface of the outboard-side glass plate toward the side of the displaying device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.