Vehicle display system using a holographic windshield prepared to withstand lamination process
US4842389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1987 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Jun 12, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0112
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic windshield (10) includes an inner glass ply (36) having an inner flexible optically transparent inner interlayer (42) overlaid upon its inner surface (40). A middle flexible transparent interlayer (44) is overlaid upon the inner interlayer. The middle interlayer has an opening (46) formed therein. A flexible hologram (12) is fitted within the opening in the middle interlayer. An outer interlayer (48) is overlaid upon the middle interlayer including the flexible hologram. An outer glass ply (50) is overlaid upon the outer interlayer. The two glass plies are bonded together to form a unitary article. Also disclosed is a method for processing a holographic combiner to withstand a windshield construction process employing lamination techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.