A backlighting arrangement is for a head up display that presents a virtual image to a human driver of a motor vehicle. The arrangement includes a light source emitting light with a non-uniform brightness over a field of view of the human driver. A diffuser includes a surface through which the light emitted by the light source passes. The surface has a texture that varies with position on the surface. The texture scatters the light such that the brightness of the light over a field of view of the human driver is more uniform after passing through the diffuser at a given average brightness than it would be with a diffuser configured to scatter light independent of position after passing through the diffuser.


    Access

    Download


    Export, share and cite



    Title :

    DIFFUSER TO IMPROVE UNIFORMITY OF HEAD-UP DISPLAY IMAGE BRIGHTNESS


    Contributors:

    Publication date :

    2024-05-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS




    The study of the brightness uniformity of a diffuser in outdoors LCD with Monte Carlo simulation

    Chen, H.-C. / Kang, C.-C. / Guo li Taiwan da xue et al. | British Library Conference Proceedings | 2003


    HEAD-UP DISPLAY DEVICE AND DIFFUSER FOR HEAD-UP DISPLAY

    MIYAKE YUSUKE / YOKOE JUNYA / NAMBARA TAKAHIRO et al. | European Patent Office | 2022

    Free access

    High Brightness Head-up Display Device

    HAE-YONG CHOI | European Patent Office | 2015

    Free access

    Head-up display device with uniform brightness

    SATO MEGUMI | European Patent Office | 2019

    Free access