Diffractive signaling device for rear-view mirror with 2D/3D display
US8749371B2 · kind B2 · utility
1Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | Dec 21, 2010 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2270/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Signaling device designed to be arranged on the reflective element forming a mirror of a rear-view device comprising at least an illumination unit and at least an optical device, characterized by the fact that the optical device includes a symbol generation unit which is provided with at least a diffraction grating designed to form an illuminated image corresponding to a first illuminated symbol, the symbol generation unit being generally transparent and the diffraction grating being formed on the surface of the symbol generation unit without affecting its transparency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.