Display device for a motor vehicle
US10007113B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Apr 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0154
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a motor vehicle, a display device has a display area displaying an image projected by an optical device by way of a reflection area as a virtual image. The optical device has at least one reflector and an actuator which moves the reflector. The actuator includes a shape memory material, which is designed to be deformed by a temperature-dependent phase transition and thereby move the reflector. By the provision of a thermal shape memory actuator that functions without an electric current, the optical path can be changed, so that overheating of internal temperature-sensitive components of the display device can be prevented in a way that is particularly inexpensive and efficient in terms of installation space and it is also possible to dispense with electronic sensing, evaluation and activation entirely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.