An embodiment of the invention relates to the technical field of projection optics, and discloses a projection optical system applied to a head-up display device of an automobile. The projection optical system comprises an image generation unit, a first reflection unit, a double telecentric lens, a second reflection unit and an imaging lens which are sequentially arranged according to a light emitting direction, wherein the double telecentric lens is configured to be used for adjusting the size of the projection image, and the imaging lens is configured to be used for adjusting the virtual image distance of the projection image and outputting a light beam of the projection image to achieve projection imaging. According to the projection optical system, the size of the image can be flexiblyadjusted through the double telecentric lenses, the virtual image distance of the image can be flexibly adjusted through the imaging lens, the projection optical system can be applied to head-up display devices of different types of automobiles, the imaging effect is good, the size is small, and the cost is low.

    本发明实施例涉及投影光学技术领域,公开了一种应用于汽车的抬头显示装置的投影光学系统,其包括按出光方向依次设置的图像生成单元、第一反射单元、双远心镜头、第二反射单元和成像镜头,所述双远心镜头配置为可用于调整所述投影图像的尺寸,所述成像镜头配置为可用于调整所述投影图像的虚像距离,并输出所述投影图像的光束以实现投影成像,本发明实施例提供的投影光学系统可通过所述双远心镜头灵活调节图像的尺寸,通过成像镜头灵活调节图像的虚像距离,能够应用于不同类型的汽车的抬头显示装置中,且成像效果好、体积小、成本低。


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    Title :

    Projection optical system and head-up display device of automobile


    Additional title:

    一种投影光学系统及汽车的抬头显示装置


    Contributors:
    ZHU WEIZHAN (author) / TANG XIAOFENG (author) / DING MINGNEI (author) / YANG WEILIANG (author) / GAO ZHIQIANG (author)

    Publication date :

    2021-03-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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



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