Diffractive head-up display device provided with a device for adjusting the position of the virtual image
US8351123B2 · kind B2 · utility
3Cited by
4References
6Claims
0Family size
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Key dates
| Filing date | Dec 9, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Dec 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffractive head up display device that includes a projection unit that uses a display to project an image through a projection window of an image mask, and towards a diffractive combiner. The display and the mask are moveable at right angles to the axis of the projection light beam, so that the adjustment of the position of the virtual image in the field of view of the observer, for example the driver of a vehicle, is obtained by translation of the display and of the mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.