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 light splitting device, a first lens, a second reflection unit and a second lens which are sequentially arranged according to alight emitting direction, and a controller which is connected with the image generation unit and the light splitting device and used for controlling images emitted by the image generation unit and light emitted by the light splitting device in a time-sharing mode, wherein the light splitting device is in a disc shape in the overlooking direction and comprises a transmission region and a reflection region; and the controller only controls the reflection region to emit light when controlling the image generation unit to emit the first image, and only controls the transmission region to emit light when the second image is emitted, so that the first image and the second image are respectively 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抬头显示装置的投影光学系统,包括按出光方向依次设置的图像生成单元、第一反射单元、分光装置、第一镜头、第二反射单元和第二镜头,以及与图像生成单元和分光装置连接的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,分光装置在俯视方向上为圆盘形且包括透射区域和反射区域,控制器在控制图像生成单元出射第一图像时仅控制反射区域出光,在出射第二图像时仅控制透射区域出光,以使第一图像和第二图像分别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,体积小且成本低。
Projection optical system and head-up display device of automobile
一种投影光学系统及汽车的抬头显示装置
2021-03-30
Patent
Electronic Resource
Chinese
PROJECTION OPTICAL SYSTEM, HEAD-UP DISPLAY DEVICE, AND AUTOMOBILE
European Patent Office | 2017
|Projection optical system and head-up display device of automobile
European Patent Office | 2021
|Projection optical system and head-up display device of automobile
European Patent Office | 2021
|PROJECTION OPTICAL SYSTEM AND HEAD-UP DISPLAY DEVICE FOR AUTOMOBILE
European Patent Office | 2022
|Projection optical system and head-up display device of automobile
European Patent Office | 2021
|