APPARATUS AND METHOD FOR CONTROLLING THE INTENSITY OF AN IMAGE GENERATED BY A HEAD- UP DISPLAY DEVICE

A head-up display (HUD) device for a motor vehicle has a projector generating a polarized light signal directed at a display surface (such as a windshield or separate combiner plate) for viewing by a driver of the vehicle. A light sensor is disposed adjacent to the projector to detect and measure th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BANYAY Matus, HAEFNER Marcus
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	A head-up display (HUD) device for a motor vehicle has a projector generating a polarized light signal directed at a display surface (such as a windshield or separate combiner plate) for viewing by a driver of the vehicle. A light sensor is disposed adjacent to the projector to detect and measure the intensity of ambient light entering the vehicle and control the intensity of the light generated by the projector in dependence on the measured ambient light intensity. The light sensor is fitted with a polarization filter that is cross-polarized relative to the polarization of the light generated by the projector so that the intensity of the ambient light reaching the sensor is independent of the intensity of the light emitted by the projector.