Curved vehicle windshield made from laminated glass
US8451541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2008 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Nov 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/011
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Interfering double images that occur with curved windshields made from laminated glass during night driving in transmission and with head-up displays in reflection can be reduced by a wedge-shaped thermoplastic intermediate film. The wedge-angle profile required for compensation of double images is determined locally as a function of pane shape and installation situation. If the vehicle has a head-up display system, the wedge-angle progression can be determined in the HUD field such that double images are prevented there in reflection. However, outside the HUD field, a wedge-angle progression that compensates double images in transmission is selected. The specifically adapted wedge-angle profile enables better compensation of double images than is possible with a film with a constant wedge angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.