Instrument panel having cover with reflection-reduction layer and method of making cover
US5971556A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D11/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument panel having a light source and a transparent cover in front of the light source. The transparent cover has a first surface at the front side of the cover and a second surface at the back side of the cover, and is formed of a polymeric wall and a polymeric film. The polymeric film has a reflection-reduction layer thereon and is bonded by intermolecular forces to the wall so that the polymeric film is on at least one of the first and second surfaces of the cover and the reflection-reduction layer is sandwiched between the film and the wall. The reflection-reduction layer is formed of a material selected from the group consisting of (a) oxides of magnesium, zinc, or aluminum, or alloys thereof, (b) hydroxides of magnesium, zinc, or aluminum, or alloys thereof, and (c) semi-metals and metals which are non-alkali metals and non-alkaline earth metals, alloys thereof, and combinations thereof. The method for making a transparent cover includes (a) applying a reflection-reduction layer onto a polymeric film, (b) placing the polymeric film with the reflection-reduction layer thereon on at least one inside surface of a mold so that the reflection-reduction layer is exposed; (c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.