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 light splitting device, a first lens, a second reflection unit and a second lens which are sequentially arranged according to a light emitting direction, and a controller which is used for controlling the images emitted by the image generation unit and light emitted by the light splitting device ina time-sharing mode, wherein the light splitting device is arranged on the image plane of the double-telecentric lens; and the controller is configured to control the reflective side of the light splitting device to emit light when the controller controls the image generation unit to emit the first image, and controls the light transmitting side of the light splitting device to emit light when theimage generation unit is controlled to emit the second image, so that the first image and the second image are emitted and imaged through the first lens and the second lens. According to the projection optical system provided by the embodiment of the invention, different display contents and pictures can be respectively realized at two different positions in a sequential control mode, and the projection optical system is small in size and low in cost.

    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、分光装置、第一镜头、第二反射单元和第二镜头,以及用于分时序控制图像生成单元所出射的图像和分光装置的出光的控制器,分光装置设置在所述双远心镜头的像面处,控制器配置为在控制图像生成单元出射第一图像时控制分光装置的反光侧出光,在控制图像生成单元出射第二图像时控制分光装置的透光侧出光,以使第一图像和第二图像通过第一镜头和第二镜头出射成像,本发明实施例提供的投影光学系统通过分时序控制的方式能够在两个不同的位置分别实现不同的显示内容和画面,且体积小、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:    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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