A head-up display device, which displays an image as a virtual image (VTI) by projecting and reflecting image display light of the image onto a projection member (3), is provided with: an illuminationlight source unit (10) for emitting illumination light; an image forming unit (50) for forming an image by partial transmission of the illumination light and emitting the image as display light; andanisotropic diffusion units (20, 220) disposed on an optical path between the illumination light source unit (10) and the image forming unit (50) and diffusing the illumination light at an anisotropicdiffusion angle. When the image is displayed as a virtual image, if an image vertical axis (Ay) is defined as a direction along the vertical direction of a vehicle in the image, and an image horizontal axis (Ax) is defined as a direction perpendicular to the image vertical axis (Ay) in the image, in the anisotropic diffusion units, a divergence angle in a direction (LDd) corresponding to the image horizontal axis (Ax) of the image is larger than a divergence angle in a direction (SDd) corresponding to the image vertical axis (Ay).

    通过向投影部件(3)投影图像的显示光并使该显示光反射从而显示为虚像(VTI)的平视显示器装置具备:照明光源部(10),发出照明光;图像形成部(50),通过使照明光部分地透过来形成图像,并作为显示光射出;以及各向异性扩散部(20、220),被配置在照明光源部与图像形成部之间的光路上,以各向异性的扩散角使照明光扩散。若在对图像进行虚像显示时在图像中定义图像上下轴(Ay)为沿着车辆的上下方向的方向,在图像中定义图像左右轴(Ax)为与图像上下轴垂直的方向,则在各向异性扩散部中,与图像左右轴对应的方向(LDd)的扩散角大于与图像上下轴对应的方向(SDd)的扩散角。


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    Title :

    HEAD-UP DISPLAY DEVICE AND IMAGE PROJECTION UNIT


    Additional title:

    平视显示器装置以及图像投射单元


    Contributors:

    Publication date :

    2020-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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    HEAD-UP DISPLAY DEVICE AND IMAGE PROJECTION UNIT

    NAMBARA TAKAHIRO | European Patent Office | 2017

    Free access