WO2022078053A1 - 一种增强现实显示装置 - Google Patents

一种增强现实显示装置 Download PDF

Info

Publication number
WO2022078053A1
WO2022078053A1 PCT/CN2021/112957 CN2021112957W WO2022078053A1 WO 2022078053 A1 WO2022078053 A1 WO 2022078053A1 CN 2021112957 W CN2021112957 W CN 2021112957W WO 2022078053 A1 WO2022078053 A1 WO 2022078053A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
image processing
processing device
imaging
augmented reality
Prior art date
Application number
PCT/CN2021/112957
Other languages
English (en)
French (fr)
Inventor
闫云飞
王金蕾
黄志勇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2022078053A1 publication Critical patent/WO2022078053A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B2027/0192—Supplementary details
    • G02B2027/0196—Supplementary details having transparent supporting structure for display mounting, e.g. to a window or a windshield

Definitions

  • the present application relates to the field of smart cars, and in particular, to an augmented reality display device.
  • HUD head-up display
  • AR-HUDs augmented reality-head-up displays
  • AR-HUD unlocks more postures. For example, once the user's vehicle deviates from the lane, the AR-HUD system will mark a red line at the edge of the lane line to remind the user. When the ACC system is working, the driver can see a bright band marked on the rear of the vehicle in front. That is, AR-HUD not only displays information, but also simulates observation of information. The reason for this effect is mainly because AR-HUD technology uses a projection surface and digital micromirror elements to generate image elements, and the image mirrors on the imaging screen are ultimately directed towards the windshield.
  • ADAS advanced driving assistance systems
  • ACC adaptive cruise control
  • the display information after using AR-HUD technology is directly projected on the road from the user's perspective, which is integrated with the traffic situation. Therefore, with the assistance of AR-HUD, the driver does not need to directly look up and observe the information during driving, because the information has been fused with the lane line.
  • AR HUD Despite the strong demand for AR HUD, AR HUD needs to display road-level information, so the required screen size is larger and the imaging distance is longer. This results in a relatively large AR HUD, but for most current models, it is difficult to provide enough space for the front instrument panel due to limitations such as air conditioning pipelines and vehicle body structure, which limits the wide application of AR HUD.
  • the embodiments of the present application provide an augmented reality display device, which is used to reduce the volume of the augmented reality display device under the condition of displaying road-level information.
  • an augmented reality display device provided by an embodiment of the present application includes an imaging device, an image processing device, and a diffusion screen; the imaging device and the image processing device are placed at the dashboard of the vehicle; the diffusion screen is placed The imaging light generated by the imaging device generates a real image on the diffuser screen, and the real image displayed on the diffuser screen is reflected to the windshield glass by the image processing device.
  • the imaging device and the image processing device are integrated in the augmented reality display device, and a diffusion screen is provided, so that the real image generated by the imaging device is mapped to the external space, which greatly increases the improvement of optical objects.
  • the internal optical path transmission of the augmented reality display device is reduced, thereby reducing the volume of the augmented reality display device.
  • the imaging device is located below the image processing device; at this time, the imaging light generated by the imaging device is emitted to the diffusion screen through an optical element (reflection or refraction or transmission) to generate the real image, that is, at this time
  • the imaging light generated by the imaging device needs to convert the optical path through the optical element, and can bypass the image processing device.
  • the imaging device and the image processing device can be integrated in various ways, as long as the imaging light generated by the imaging device can form a real image in the external space of the augmented reality display device, which is not limited here. .
  • the diffuser screen is located in the upper middle part of the windshield glass vehicle, or located in the vehicle ceiling or located in the middle upper part outside the windshield glass vehicle.
  • the diffusion screen can be installed as long as it is required.
  • the image processing device and the windshield glass form an equivalent mirror group, wherein the distance between the position of the real image displayed by the diffuser screen and the center of the equivalent mirror group is the object distance, and the real image passes through the The distance between the position where the virtual image is generated by the equivalent mirror group and the center of the equivalent mirror group is the image distance; the size of the virtual image is equal to the product of the ratio of the image distance to the object distance and the size of the real image. Therefore, when adjusting the size of the virtual image, the distance between the diffuser screen and the center of the equivalent lens group can be adjusted according to requirements.
  • the image processing device is a free-form surface mirror, an aspherical mirror or a Fresnel mirror.
  • the imaging device is a digital optical processing technology DLP projection module or a liquid crystal-on-silicon LCoS projection module.
  • FIG. 1 is a schematic structural diagram of an augmented reality display device with optical path folding inside
  • FIG. 2 is a schematic structural diagram of an augmented reality display device in an embodiment of the present application
  • FIG. 3 is another schematic structural diagram of an augmented reality display device in an embodiment of the present application.
  • FIG. 4 is another schematic structural diagram of an augmented reality display device in an embodiment of the present application.
  • FIG. 5 is another schematic structural diagram of an augmented reality display device in an embodiment of the present application.
  • FIG. 6 is another schematic structural diagram of an augmented reality display device in an embodiment of the present application.
  • FIG. 7 is a schematic diagram illustrating the comparison between the size of the virtual image and the size of the real image in an embodiment of the present application.
  • the HUD is used to reduce the frequency that the pilot looks up at the disk and avoids the pilot being distracted. Subsequently, due to the advantages of HUD equipment, the car also began to slowly follow the installation. HUD devices allow users to observe speed limit indications, road maps and other information without lowering their heads or turning their heads. In contrast to HUDs, augmented reality heads-up displays not only display information, but also change the way the driver views the information.
  • FIG. 1 A schematic structural diagram of the augmented reality head-up display optical system is shown in FIG. 1 , which specifically includes a car windshield 2 , an augmented reality head-up display device 1 and a human eye 3 .
  • the augmented reality head-up display device 1 includes a reflector 12 , a refracting reflector 13 and an image source 11 .
  • the light emitted by the image source 11 is incident on the reflector 12 through the refracting reflector 13 and then projected onto the windshield 2 of the car. , the human eye 3 can see the virtual image formed in front of the car through the windshield 2 of the car.
  • the magnification of the magnifying and folding mirror 13 is first considered.
  • the magnification cannot be increased infinitely, and it is generally believed that it should be less than 7, otherwise the binocular parallax will be difficult to control, causing the driver to feel dizzy.
  • the image distortion is serious, and it is difficult to recover by post-image distortion correction.
  • the augmented reality head-up display device 1 is installed inside the dashboard of the vehicle, and usually has various parts such as air ducts, vehicle data cables, steering column brackets, and instruments at corresponding positions.
  • the space that can be given to the augmented reality head-up display device 1 is extremely limited, and various models are completely different. It can be seen that the object distance between the folding mirror 13 and the image source 11 is basically limited to a certain range. Even if a polygon mirror is used, the object distance does not increase much, and the optical path and structure are complicated.
  • an embodiment of the present application provides an augmented reality display device 100, the specific structure of which is shown in FIG. 2, including: an imaging device 101, an image processing device 102, and a diffusion screen 103; the imaging device 101 and all The image processing device 102 is placed in the dashboard 1 of the car; the diffusion screen 103 is placed in the upper part of the car; the imaging light generated by the imaging device 101 generates a real image on the diffusion screen 103, and the The real image displayed by the diffusion screen 103 is reflected to the windshield glass 2 by the image processing device 102 .
  • the imaging device and the image processing device are integrated in the augmented reality display device, and a diffusion screen is provided, so that the real image generated by the imaging device is mapped to the external space, which greatly increases the improvement of optical objects.
  • the internal optical path transmission of the augmented reality display device is reduced, thereby reducing the volume of the augmented reality display device.
  • the installation methods of the augmented reality display device in the vehicle include the following possible implementation methods:
  • the diffuser screen 103 is installed on the upper middle and upper part of the windshield glass 2 on one side of the vehicle.
  • the augmented reality display device 100 provided by this embodiment of the present application includes an imaging device 101, an image processing device 102, and a diffusion screen 103, wherein the imaging device 101 and the image processing device 102 are placed at the dashboard 1 in the vehicle, and the The imaging light generated by the imaging device 101 is mapped on the diffuser screen 103 to generate a real image; then the real image displayed on the diffuser screen 103 is reflected to the windshield 2 of the vehicle by the image processing device 102 and reflected to the driver's eye 3 .
  • the diffuser screen 103 is located on the incident side of the image processing device 102 , and the windshield glass 2 is located on the reflection side of the image processing device 102 , so that the real image displayed by the diffuser screen 103 passes through the image processing device 102 It is reflected towards the windshield 2 , thereby entering the driver's eye 3 .
  • the direction of the arrow in the figure is used to indicate the path of the imaging light of the imaging device 101 .
  • the diffuser screen is installed on the middle and upper part of the windshield glass 2 on the outside side of the vehicle.
  • the augmented reality display device 100 provided by this embodiment of the present application includes an imaging device 101, an image processing device 102, and a diffusion screen 103, wherein the imaging device 101 and the image processing device 102 are placed at the dashboard 1 in the vehicle, and the The imaging light generated by the imaging device 101 is refracted by the windshield glass 2 and then mapped on the diffusion screen 103 to generate a real image; then the real image displayed on the diffusion screen 103 is refracted by the windshield glass 2 and then reflected to the vehicle by the image processing device 102 the windshield 2 and reflect it into the driver's eye 3 .
  • the diffuser screen 103 is located on the incident side of the image processing device 102 , and the windshield glass 2 is located on the reflection side of the image processing device 102 , so that the real image displayed by the diffuser screen 103 passes through the image processing device 102 It is reflected towards the windshield 2 , thereby entering the driver's eye 3 .
  • the direction of the arrow in the figure is used to indicate the path of the imaging light of the imaging device 101 .
  • the diffuser screen is installed on the outer side of the windshield glass to reduce the installation volume in the vehicle.
  • the diffusion shield is installed on the ceiling 4 of the vehicle.
  • the augmented reality display device 100 provided by this embodiment of the present application includes an imaging device 101, an image processing device 102, and a diffusion screen 103, wherein the imaging device 101 and the image processing device 102 are placed at the dashboard 1 in the vehicle, and the The imaging light generated by the imaging device 101 is mapped on the diffuser screen 103 to generate a real image; then the real image displayed on the diffuser screen 103 is reflected to the windshield 2 of the vehicle by the image processing device 102 and reflected to the driver's eye 3 .
  • the diffuser screen 103 is located on the incident side of the image processing device 102 , and the windshield glass 2 is located on the reflection side of the image processing device 102 , so that the real image displayed by the diffuser screen 103 passes through the image processing device 102 It is reflected towards the windshield 2 , thereby entering the driver's eye 3 .
  • the direction of the arrow in the figure is used to indicate the path of the imaging light of the imaging device 101 .
  • the distance between the diffuser screen and the image processing device can be further increased, thereby realizing the increase in the object distance and obtaining an enlarged image.
  • no additional devices are added to the windshield, thereby reducing the impact on the driver's line of sight.
  • the diffusion shield is installed behind the interior rearview mirror 5 (ie, on the side opposite to the mirror surface).
  • the augmented reality display device 100 provided by this embodiment of the present application includes an imaging device 101, an image processing device 102, and a diffusion screen 103, wherein the imaging device 101 and the image processing device 102 are placed at the dashboard 1 in the vehicle, and the The imaging light generated by the imaging device 101 is mapped on the diffuser screen 103 to generate a real image; then the real image displayed on the diffuser screen 103 is reflected to the windshield 2 of the vehicle by the image processing device 102 and reflected to the driver's eye 3 .
  • the diffuser screen 103 is located on the incident side of the image processing device 102 , and the windshield glass 2 is located on the reflection side of the image processing device 102 , so that the real image displayed by the diffuser screen 103 passes through the image processing device 102 It is reflected towards the windshield 2 , thereby entering the driver's eye 3 .
  • the direction of the arrow in the figure is used to indicate the path of the imaging light of the imaging device 101 . This reduces the impact on the driver's line of sight.
  • the diffusing screen 103 may be a holographic diffuser or a lens array.
  • the imaging device 101 is located below the image processing device 102 .
  • the imaging light generated by the imaging device 101 is emitted to the diffuser screen 103 through an optical element (reflection, refraction or transmission) to generate the real image, that is, the imaging light generated by the imaging device 101 needs to be converted by the optical element.
  • the light path, bypassing the image processing device 102, the specific light rays are: the imaging device 101 generates imaging light through the optical element to transform the light path to the diffuser screen 103 to generate the real image; then the real image displayed by the diffuser screen 103 passes through the image.
  • the processing device 102 is reflected to the windshield glass 2 and finally to the driver's eye 3 .
  • the rotation angle of the image processing device 102 needs to be adjusted accordingly, so that the image processing device 102 can realize that the virtual image can accurately enter the driver's human eye 3 .
  • the rotation angle of the image processing device 102 may also need to be adjusted according to the height and sitting posture of different drivers.
  • the rotation angle of the image processing apparatus 102 may be adjusted through a screw nut adjustment mechanism.
  • the screw nut adjustment mechanism has a drive motor, a fixed screw rod and a movable nut on the fixed screw rod.
  • the drive motor adopts a stepping motor, and can complete forward and reverse movements according to the control buttons on the vehicle.
  • the image processing device 102 has a rotating shaft.
  • the movable nut is connected with the image processing device 102 by a connecting rod.
  • the drive motor works, the movable nut is driven to move by the fixed screw rod, and the image processing device 102 is pushed or pulled by the connecting rod to change its rotation angle, so that the virtual image can accurately fall on the driving of different heights 3 positions of the member's eyeball.
  • the image processing device 102 and the windshield glass 2 can form an equivalent mirror group, wherein the distance between the position of the real image displayed by the diffusion screen 103 and the center of the equivalent mirror group is the object distance, and the real image passes through the The distance between the position where the virtual image is generated by the equivalent mirror group and the center of the equivalent mirror group is the image distance; in this embodiment, the size of the virtual image is equal to the product of the ratio of the image distance to the object distance and the size of the real image. That is to say, based on the above conditions, if the user needs to adjust the imaging size of the AR-HUD, it can be obtained by adjusting the distance between the diffusion screen 103 and the equivalent lens group.
  • both the size of the virtual image and the size of the real image are used to indicate the size of the image.
  • the height of the desk lamp displayed in the real image is 20 cm; if an enlarged virtual image is generated through an equivalent lens group at this time, in an exemplary solution, the height of the desk lamp displayed in the virtual image can be enlarged is 25 cm. It can be understood that other dimensions of the desk lamp are also enlarged in the same proportion as the height, and details are not repeated here.
  • the image processing device 102 may be a device that can change the display size of the image and the imaging position, such as a free-form surface mirror, an aspherical mirror, or a Fresnel mirror.
  • the characteristics of the image processing device 102 can be obtained through optical simulation analysis according to the size of the image source of the diffusion screen 103, the imaging distance of the virtual image, and the FOV (field of view). For example, when the image processing device 102 is a free-form surface mirror, the surface shape, position and rotation direction of the free-form surface mirror are passed through the optical system according to the image source size, virtual image imaging distance, FOV (field of view), etc. of the diffuser screen 103 . The simulation analysis is obtained.
  • the imaging device 101 may be a digital optical processing (Digital Light Processing, DLP) projection module or a liquid crystal on silicon (Liquid crystal on silicon, LCoS) projection module.
  • the DLP adopts the application of reflective digital micro-mirror devices, which greatly improves the total light efficiency of the imaging device, and has excellent contrast and brightness uniformity, so it has extremely high light efficiency and reduces the number of supplementary light devices.
  • LCoS has the characteristics of high light efficiency, small size, and high aperture ratio, which can easily achieve high resolution and full color performance.
  • the size of LCoS is generally 0.7 inches, the size of the related optical instruments is also greatly reduced, which greatly reduces the volume of the imaging device.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)

Abstract

本申请实施例公开了一种增强现实显示装置，用于在满足显示路面级信息的条件下，减小增强现实显示装置的体积。本申请实施例提供的增强现实显示装置包括成像装置，图像处理装置和扩散屏；所述成像装置与所述图像处理装置被置于车内仪表板处；所述扩散屏被置于所述车内上部；所述成像装置产生成的成像光线在所述扩散屏生成实像，所述扩散屏显示的实像通过所述图像处理装置反射向风挡玻璃。

Description

一种增强现实显示装置
本申请要求于2020年10月13日提交中国国家知识产权局、申请号为202011090895.4、申请名称为“一种增强现实显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及智能汽车领域，尤其涉及一种增强现实显示装置。
背景技术
抬头显示(head-up display，HUD)起初诞生于飞机上，用于减少飞行员抬头查看盘的频率，避免飞行员力不集中。随后，由于HUD设备的优点，汽车也开始慢慢跟进安装。HUD设备可以使用户尽量做到不低头、不转头就可以观察到限速指示、路线图等信息。而与HUD相比，增强现实抬头显示(augmented reality-head-up display，AR-HUD)不仅显示信息，同时还改变驾驶员观察信息的方式。
与高级驾驶辅助系统(advanced driving assistance system，ADAS)、车道偏离报警系统以及自巡航系统(adaptive cruise control，ACC)结合使用，AR-HUD解锁更多姿势。举个例子，一旦用户车辆偏离车道，AR-HUD系统在车道线边缘处标出红线提醒用户。而在ACC系统工作时，驾驶员则可以看到前车后部一条标记的亮带。即AR-HUD不仅显示信息，还将信息模拟观察。之所以有这样的效果，主要是由于AR-HUD技术使用了增投影面和数字微镜元件生成图像元素，同时成像幕上的图像反射镜最终射向挡风。使用AR-HUD技术后的显示信息直接投射在用户角度的道路上，与交通状况融合。因此在AR-HUD的辅助下，驾驶员在驾驶过程中无需直接抬头观察信息，因为信息与车道线已经了融合。
尽管AR HUD需求强烈，但是AR HUD需要显示路面级信息，因此需求的画面尺寸更大，成像距离更远。这导致AR HUD体积相对较大，但对于当前大部分车型而言，前仪表台受限于空调管路、车体结构等限制很难提供足够空间，因此限制了AR HUD广泛应用。
发明内容
本申请实施例提供了一种增强现实显示装置，用于在满足显示路面级信息的条件下，减小增强现实显示装置的体积。
第一方面，本申请实施例提供的增强现实显示装置包括成像装置，图像处理装置和扩散屏；所述成像装置与所述图像处理装置被置于车内仪表板处；所述扩散屏被置于所述车内上部；所述成像装置产生成的成像光线在所述扩散屏生成实像，所述扩散屏显示的实像通过所述图像处理装置反射向风挡玻璃。
本实施例提供的技术方案中，该成像装置与该图像处理装置集成在该增强现实显示装置内，并提供了一个扩散屏，使得成像装置产生的实像映射至外部空间，极大增加提高光学物距，可以轻松地得到远距离、大画幅的投影虚像的情况下，减少增强现实显示装置的内部光路传输，从而减少该增强现实显示装置的体积。
可选的，所述成像装置位于所述图像处理装置下方；所述成像装置产生的成像光线此时通过光学元件(反射或者折射或者透射)发射至所述扩散屏生成所述实像，即此时该成 像装置产生的成像光线需要通过该光学元件转换光路，绕过该图像处理装置即可。本实施例中，该成像装置与该图像处理装置的集成方式可以多样，只要可以满足该成像装置生成的成像光线可以在该增强现实显示装置的外部空间成实像即可，具体此处不做限定。
可选的，所述扩散屏位于所述风挡玻璃车内的中上部或位于车内顶棚或位于所述风挡玻璃车外的中上部。本实施例中，该扩散屏只要可以根据需求进行安装。
可选的，所述图像处理装置与所述风挡玻璃组成等效镜组，其中所述扩散屏显示的实像的位置与所述等效镜组中心的距离为物距，所述实像通过所述等效镜组生成虚像的位置与所述等效镜组中心的距离为像距；所述虚像的大小等于所述像距与所述物距的比值和所述实像的大小的乘积。因此在调整该虚像的大小时，可以根据需求调整扩散屏与等效镜组中心的距离。
可选的，所述图像处理装置为自由曲面镜、非球面镜或菲涅尔镜。
可选的，所述成像装置为数字光学处理技术DLP投影模块或者硅上液晶LCoS投影模块。
附图说明
图1为内部进行光路折叠的增强现实显示装置的一个结构示意图；
图2为本申请实施例中增强现实显示装置的一个结构示意图；
图3为本申请实施例中增强现实显示装置的另一个结构示意图；
图4为本申请实施例中增强现实显示装置的另一个结构示意图；
图5为本申请实施例中增强现实显示装置的另一个结构示意图；
图6为本申请实施例中增强现实显示装置的另一个结构示意图；
图7为本申请实施例中虚像的大小与实像大小的对比示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，下面结合附图，对本申请的实施例进行描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着新应用场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
HUD用于减少飞行员抬头查看盘的频率，避免飞行员力不集中。随后，由于HUD设备的优点，汽车也开始慢慢跟进安装。HUD设备可以使用户尽量做到不低头、不转头就可以观察到限速指示、路线图等信息。而与HUD相比，增强现实抬头显示不仅显示信息，同时还改变驾驶员观察信息的方式。该增强现实抬头显示光学系统的一个结构示意图如图1所示，具体包括汽车风挡2、增强现实抬头显示装置1和人眼3。其中，该增强现实抬头显示装置1包括反射镜12、折转反射镜13以及像源11，由像源11发出的光线通过折转反射镜13入射到反射镜12，再投影到汽车风挡2上，人眼3通过汽车风挡2可看到成像在汽车前方的虚像。在此结构中，该增强现实抬头显示装置1中若要得到远距离的投影虚像，首先考虑放大折转反射镜13的放大倍率。但是放大倍率不可能无限增大，一般认为应该小于7， 否则双眼视差会难以控制，使驾驶员生产生眩晕感。而且图像变形严重，靠后期的图像畸变校正也难以复原。所以在放大倍率达到极限时，必须考虑物距的增大。增强现实抬头显示装置1是安装在车内仪表板内部的，通常在对应的位置有风管，车载数据线，转向管柱支架，仪表等多种零件。能够给到增强现实抬头显示装置1的空间极其有限，且各种车型都完全不一样。由此可见折转反射镜13与像源11之间的物距也是基本上被局限于一定范围内。即使采用多面反射镜，物距也增加不多，而且会造成光路和结构复杂化。
为了解决这一问题，本申请实施例提供一种增强现实显示装置100，其具体结构如图2所示，包括：成像装置101，图像处理装置102和扩散屏103；所述成像装置101与所述图像处理装置102被置于车内仪表板1内；所述扩散屏103被置于所述车内上部；所述成像装置101产生成的成像光线在所述扩散屏103生成实像，所述扩散屏103显示的实像通过所述图像处理装置102反射向风挡玻璃2。本实施例提供的技术方案中，该成像装置与该图像处理装置集成在该增强现实显示装置内，并提供了一个扩散屏，使得成像装置产生的实像映射至外部空间，极大增加提高光学物距，可以轻松地得到远距离、大画幅的投影虚像的情况下，减少增强现实显示装置的内部光路传输，从而减少该增强现实显示装置的体积。
本实施例中根据扩散屏的安装位置不同，该增强现实显示装置在车内的安装方式包括如下几种可能实现方式：
一种可能实现方式中，如图3所示，该扩散屏103安装在风挡玻璃2在车内一侧的中上部。此时，本申请实施例提供的增强现实显示装置100包括成像装置101、图像处理装置102以及扩散屏103，其中，该成像装置101与该图像处理装置102置于车内仪表台1处，该成像装置101生成的成像光线映射在该扩散屏103上生成实像；然后该扩散屏103上显示的实像通过该图像处理装置102反射至车辆的风挡玻璃2，并反射至驾驶员眼球3中。其中，所述扩散屏103位于所述图像处理装置102的入射侧，而风挡玻璃2位于所述图像处理装置102的反射侧，使得所述该扩散屏103显示的实像经过所述图像处理装置102反射向风档玻璃2，以此进入驾驶员眼球3中。本实施例中，图中的箭头方向用于指示成像装置101的成像光线的路径。
另一种可能实现方式中，如图4所示，该扩散屏安装于风挡玻璃2在车外一侧的中上部。此时，本申请实施例提供的增强现实显示装置100包括成像装置101、图像处理装置102以及扩散屏103，其中，该成像装置101与该图像处理装置102置于车内仪表台1处，该成像装置101生成的成像光线在经过风挡玻璃2的折射之后映射在该扩散屏103上生成实像；然后该扩散屏103上显示的实像经过风挡玻璃2的折射之后通过该图像处理装置102反射至车辆的风挡玻璃2，并反射至驾驶员眼球3中。其中，所述扩散屏103位于所述图像处理装置102的入射侧，而风挡玻璃2位于所述图像处理装置102的反射侧，使得所述该扩散屏103显示的实像经过所述图像处理装置102反射向风档玻璃2，以此进入驾驶员眼球3中。本实施例中，图中的箭头方向用于指示成像装置101的成像光线的路径。这样将该扩散屏安装在风挡玻璃车外的一面可以减少车内的安装体积。
另一种可能实现方式中，如图5所示，该扩散屏蔽安装于车内顶棚4。此时，本申请 实施例提供的增强现实显示装置100包括成像装置101、图像处理装置102以及扩散屏103，其中，该成像装置101与该图像处理装置102置于车内仪表台1处，该成像装置101生成的成像光线映射在该扩散屏103上生成实像；然后该扩散屏103上显示的实像通过该图像处理装置102反射至车辆的风挡玻璃2，并反射至驾驶员眼球3中。其中，所述扩散屏103位于所述图像处理装置102的入射侧，而风挡玻璃2位于所述图像处理装置102的反射侧，使得所述该扩散屏103显示的实像经过所述图像处理装置102反射向风档玻璃2，以此进入驾驶员眼球3中。本实施例中，图中的箭头方向用于指示成像装置101的成像光线的路径。这样将该扩散屏与图像处理装置的距离可以更加增大，从而实现物距的增大，从而获取放大的图像。同时不在风挡玻璃上增加额外的装置，从而减少对驾驶员的视线影响。
另一种可能实现方式中，如图6所示，该扩散屏蔽安装于车内后视镜5后方(即与镜面相反的一侧)。此时，本申请实施例提供的增强现实显示装置100包括成像装置101、图像处理装置102以及扩散屏103，其中，该成像装置101与该图像处理装置102置于车内仪表台1处，该成像装置101生成的成像光线映射在该扩散屏103上生成实像；然后该扩散屏103上显示的实像通过该图像处理装置102反射至车辆的风挡玻璃2，并反射至驾驶员眼球3中。其中，所述扩散屏103位于所述图像处理装置102的入射侧，而风挡玻璃2位于所述图像处理装置102的反射侧，使得所述该扩散屏103显示的实像经过所述图像处理装置102反射向风档玻璃2，以此进入驾驶员眼球3中。本实施例中，图中的箭头方向用于指示成像装置101的成像光线的路径。这样可以减少对于驾驶员的视线影响。
本实施例中，该扩散屏103可以是全息扩散器或透镜阵列。
可选的，该成像装置101位于该图像处理装置102的下方。所述成像装置101产生的成像光线此时通过光学元件(反射或者折射或者透射)发射至所述扩散屏103生成所述实像，即此时该成像装置101产生的成像光线需要通过该光学元件转换光路，绕过该图像处理装置102即可其具体的光线为：该成像装置101生成成像光线通过该光学元件变换光路至该扩散屏103生成该实像；然后该扩散屏103显示的实像通过该图像处理装置102反射至风挡玻璃2，最后反射至驾驶员眼球3。可以理解的是，该扩散屏103与该图像处理装置102之间的位置关系存在对应的关系。即根据扩散屏103的位置，需要对图像处理装置102的转角进行相应的调整，以使得该图像处理装置102可以实现虚像可以精确的进入驾驶员人眼3。同时，还可以根据不同驾驶员的身高及坐姿等情况，需要对该图像处理装置102的转角进行调整。一种可能实现方式中，可以通过有丝杆螺母调整机构对该图像处理装置102的转角进行调整。所述丝杆螺母调整机构具有驱动电机、固定丝杆及所述固定丝杆上的活动螺母。所述驱动电机采用步进电机，根据车上的控制按键，可完成正、反转动作。该图像处理装置102具有转轴。所述活动螺母与该图像处理装置102间以连杆相连。所述驱动电机工作，通过所述固定丝杆带动所述活动螺母移位，利用所述连杆推动或拉动该图像处理装置102，以改变其转角，使虚像能够精确地落在不同高度的驾驶员眼球3位置。
可选的，该图像处理装置102与该风挡玻璃2可组成等效镜组，其中，该扩散屏103所显示的实像的位置与该等效镜组中心的距离为物距，该实像通过该等效镜组生成虚像的位置与该等效镜组中心的距离为像距；本实施例中，该虚像大小等于该像距与该物距的比 值和该实像大小的乘积。即基于上述条件可知，若用户需要调整该AR-HUD的成像大小，可以通过调整扩散屏103与该等效镜组的距离得到。本实施例中，该虚像的大小与该实像的大小均用于指示图像大小。比如，如图7所示，实像中显示的台灯的高度为20厘米；若此时通过等效镜组生成放大的虚像，则一种示例性方案中，该虚像中显示的台灯的高度可以放大为25厘米。可以理解的是，台灯其他尺寸也按照与高度相同的比例进行放大，具体此处不再赘述。
可选的，本实施例中，该图像处理装置102可以为自由曲面镜、非球面镜或菲涅尔镜等可以改变图像显示大小以及成像位置的设备。其中，该图像处理装置102的特征可以根据扩散屏103的像源大小、虚像成像距离、FOV(视场角)等通过光学仿真分析得出。例如，在该图像处理装置102为自由曲面镜时，该自由曲面镜的面型、位置和转动方向根据所述扩散屏103的像源大小、虚像成像距离、FOV(视场角)等通过光学仿真分析得出。
可选的，该成像装置101可以是数字光学处理技术(Digital Light Processing，DLP)投影模块或者硅上液晶(Liquid crystal on silicon，LCoS)投影模块。该DLP采用反射式数字微反射镜器件的应用，使成像器件的总光效率大大提高，对比度亮度均匀性都非常出色，从而具有极高的光效率，减少补光器件。而LCoS具有利用光效率高、体积小、开口率高等特点，可以很容易的实现高分辨率和充分的色彩表现。同时由于LCoS尺寸一般为0.7英寸，所以相关的光学仪器尺寸也大大缩小，使成像装置的体积大大减小。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可以通过其它的方式实现。以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (6)

  1. 一种增强现实显示装置，其特征在于，包括：
    成像装置，图像处理装置和扩散屏；
    所述成像装置与所述图像处理装置被置于车内仪表板处；
    所述扩散屏被置于所述车内上部；
    所述成像装置产生成的成像光线在所述扩散屏生成实像，所述扩散屏显示的实像通过所述图像处理装置反射向风挡玻璃。
  2. 根据权利要求1所述的装置，其特征在于，所述成像装置位于所述图像处理装置下方。
  3. 根据权利要求1或2所述的装置，其特征在于，所述扩散屏位于所述风挡玻璃车内的中上部或位于车内顶棚或位于所述风挡玻璃车外的中上部。
  4. 根据权利要求1至3中任一项所述的装置，其特征在于，所述图像处理装置与所述风挡玻璃组成等效镜组，其中所述扩散屏显示的实像的位置与所述等效镜组中心的距离为物距，所述实像通过所述等效镜组生成虚像的位置与所述等效镜组中心的距离为像距；
    所述虚像的大小等于所述像距与所述物距的比值和所述实像的大小的乘积。
  5. 根据权利要求1至4中任一项所述的装置，其特征在于，所述图像处理装置为自由曲面镜、非球面镜或菲涅尔镜。
  6. 根据权利要求1至5中任一项所述的装置，其特征在于，所述成像装置为数字光学处理技术DLP投影模块或者硅上液晶LCoS投影模块。
PCT/CN2021/112957 2020-10-13 2021-08-17 一种增强现实显示装置 WO2022078053A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011090895.4 2020-10-13
CN202011090895.4A CN114355609A (zh) 2020-10-13 2020-10-13 一种增强现实显示装置

Publications (1)

Publication Number Publication Date
WO2022078053A1 true WO2022078053A1 (zh) 2022-04-21

Family

ID=81090238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/112957 WO2022078053A1 (zh) 2020-10-13 2021-08-17 一种增强现实显示装置

Country Status (2)

Country Link
CN (2) CN114355609A (zh)
WO (1) WO2022078053A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978196A (en) * 1987-04-15 1990-12-18 Yazaki Corporation Display apparatus for a vehicle
CN204526843U (zh) * 2015-03-31 2015-08-05 济宁学院 低成本车用平视显示器
CN206523704U (zh) * 2017-02-13 2017-09-26 怡利电子工业股份有限公司 窄角扩散片抬头显示设备
CN206615076U (zh) * 2017-02-14 2017-11-07 深圳前海智云谷科技有限公司 一种分体式抬头显示装置
CN108241210A (zh) * 2016-12-23 2018-07-03 怡利电子工业股份有限公司 远距离显像的抬头显示设备
CN108663811A (zh) * 2017-03-28 2018-10-16 本田技研工业株式会社 平视显示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101334530B (zh) * 2007-06-27 2011-01-19 先进微系统科技股份有限公司 抬头显示系统
CN102269873A (zh) * 2010-06-04 2011-12-07 富港电子（东莞）有限公司 抬头显示系统
TW201144861A (en) * 2010-06-07 2011-12-16 Cheng Uei Prec Ind Co Ltd Head-up Display System
CN104554004B (zh) * 2013-10-23 2017-07-04 比亚迪股份有限公司 一种抬头数字显示系统
CN206400192U (zh) * 2016-12-23 2017-08-11 怡利电子工业股份有限公司 远距离显像的抬头显示设备
TWI631027B (zh) * 2016-12-27 2018-08-01 怡利電子工業股份有限公司 Head-up display device for long-distance imaging
CN108828773A (zh) * 2018-04-24 2018-11-16 惠州市华阳多媒体电子有限公司 一种翻转式调节的ar-hud光路系统
CN109435849A (zh) * 2018-10-10 2019-03-08 浙江零跑科技有限公司 一种车用抬头显示系统
CN209281079U (zh) * 2018-12-03 2019-08-20 延锋伟世通电子科技（上海）有限公司 分离式激光车载抬头显示器结构
CN109375373A (zh) * 2018-12-03 2019-02-22 延锋伟世通电子科技（上海）有限公司 分离式激光车载抬头显示器结构及显示方法
CN110031977A (zh) * 2019-03-18 2019-07-19 惠州市华阳多媒体电子有限公司 一种基于偏振分光的双屏显示系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978196A (en) * 1987-04-15 1990-12-18 Yazaki Corporation Display apparatus for a vehicle
CN204526843U (zh) * 2015-03-31 2015-08-05 济宁学院 低成本车用平视显示器
CN108241210A (zh) * 2016-12-23 2018-07-03 怡利电子工业股份有限公司 远距离显像的抬头显示设备
CN206523704U (zh) * 2017-02-13 2017-09-26 怡利电子工业股份有限公司 窄角扩散片抬头显示设备
CN206615076U (zh) * 2017-02-14 2017-11-07 深圳前海智云谷科技有限公司 一种分体式抬头显示装置
CN108663811A (zh) * 2017-03-28 2018-10-16 本田技研工业株式会社 平视显示装置

Also Published As

Publication number Publication date
CN114355609A (zh) 2022-04-15
CN114415371A (zh) 2022-04-29

Similar Documents

Publication Publication Date Title
KR101408523B1 (ko) 헤드업 디스플레이 장치
CN112789545B (zh) 一种hud系统、车辆及虚像的位置调节方法
US8854281B2 (en) Head up display (HUD)
JPH02299934A (ja) 車輌用のヘッドアップディスプレイ
TWI446001B (zh) Multi-optical head development device
US7688516B2 (en) Head-up display device for vehicles
CN105404006A (zh) 一种抬头显示装置
US11435581B2 (en) Vehicle-mounted display device and display system
CN109581667A (zh) 一种用于车载抬头显示器的光学投影装置
TWI494603B (zh) 可攜式抬頭顯示裝置
US10203498B2 (en) Long distance imaging head-up display device
CN112558299A (zh) 用于扩充实境的抬头显示装置
JP6269261B2 (ja) 虚像表示装置
CN110412764A (zh) 平视显示器及其设计方法
CN113671696B (zh) 一种显示装置和显示系统
KR20190060062A (ko) 원거리 HUD(Head Up Display) 기기 및 방법
WO2022078053A1 (zh) 一种增强现实显示装置
CN207216150U (zh) 抬头显示器与运输工具
KR20110016118A (ko) 네비게이션용 헤드업 디스플레이 장치
TW201321795A (zh) 抬頭顯示裝置
JP3209553U (ja) 遠距離画像表示のヘッドアップディスプレイデバイス
JP2021018295A (ja) ウィンドシールド表示装置
KR20160041201A (ko) 모드 변환이 가능한 다 시각 ｈｕｄ 장치 및 방법
CN214751108U (zh) 基于mems阵列的车载成像装置
CN214504022U (zh) 一种hud与车内空中成像智能车载显示系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21879100

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21879100

Country of ref document: EP

Kind code of ref document: A1