WO2019100518A1 - 增强现实抬头显示装置以及消重影方法 - Google Patents

增强现实抬头显示装置以及消重影方法 Download PDF

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WO2019100518A1
WO2019100518A1 PCT/CN2017/119164 CN2017119164W WO2019100518A1 WO 2019100518 A1 WO2019100518 A1 WO 2019100518A1 CN 2017119164 W CN2017119164 W CN 2017119164W WO 2019100518 A1 WO2019100518 A1 WO 2019100518A1
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image
mirror
meridional
augmented reality
display device
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PCT/CN2017/119164
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English (en)
French (fr)
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马斌斌
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苏州车萝卜汽车电子科技有限公司
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Publication of WO2019100518A1 publication Critical patent/WO2019100518A1/zh

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    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
    • 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
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects

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  • the present application relates to the field of automobile head-up display, and in particular to an augmented reality head-up display device and a ghost-removing method.
  • AR-HUD Augmented Reality-Head Up Display
  • the two images projected at the current stage one image is an image with a projection distance of about 7 meters, overlapping with the actual environment, called: augmented reality image; the other image is an image with a projection distance of about 2 meters, showing the speed and condition information. , called: vehicle status image.
  • the method of eliminating ghosting is usually a custom windshield, and the polyvinyl butyral (English name Polyvinyl Butyral, PVB for short) inside the windshield has a wedge angle, so that the windshield inside and outside the windshield The surfaces are not parallel.
  • the inventors have found that the angular extent of the polyvinyl butyral wedge angle is related to the parameters and projection distance of the head-up display. Therefore, for the two images of the different projection distances described above, the ghost cannot be eliminated at the same time. In particular, the greater the difference in projection distance between the two images, the more severe the ghosting.
  • the main purpose of the present application is to provide an augmented reality head-up display device to solve the problem that the ghosting cannot be simultaneously eliminated in the related art.
  • an augmented reality head-up display device is provided.
  • An augmented reality head-up display device comprising: a mirror group and a display module, the display module for generating a first image source and a second image source; the mirror group for using the first The image source is reflected to the windshield to form a first image; the mirror set is further configured to reflect the second image source to the windshield to form a second image; the first shape formed by the mirror The image and the second image satisfy a preset condition of determining whether a projection distance of the meridional image of the first image and the meridional image of the second image is equal; if the meridional image of the first image and the second image are The projection distances of the meridional images are equal, and the astigmatism absolute values of the first image and the second image are adjusted; wherein the astigmatism absolute values of the first image and the second image are in the range of: 0D to Between 1.5D.
  • the mirror group includes: a first mirror for sharing a reflection surface as an optical path of the first image and the second image.
  • the first image and the second image that are formed by the mirror satisfy the following preset conditions, and further include any one or more of the following: a sagittal image imaging distance of the first image ⁇ 4m; wherein the first image is for displaying an augmented reality image; the sagittal image of the second image is imaged by a distance of 1 m to 5 m; wherein the second image is for displaying vehicle state information.
  • first image and the second image astigmatism absolute value ⁇ 1.5D.
  • the mirror group includes: a first mirror, a second mirror, and a third mirror, wherein the first mirror is a curved mirror, and the second mirror and the third mirror are plane mirrors or curved surfaces mirror.
  • a method of deghosting method comprising: determining whether a projection distance of a meridional image of the first image and a meridional image of the second image is equal; if the first image The projection distances of the meridional image of the second image and the meridional image of the second image are equal, and the absolute values of the astigmatism of the first image and the second image are adjusted;
  • the augmented reality head-up display device comprises: a mirror group and a display module The display module is configured to generate a first image source and a second image source; the mirror group is configured to reflect the first image source to a windshield to form a first image; the mirror group And for reflecting the second image source to the windshield to form a second image.
  • the astigmatism absolute values of the first image and the second image range from 0D to 1.5D.
  • the meridional image of the first image is less than the sagittal image.
  • the meridional image of the second image is greater than the sagittal image.
  • the astigmatism of the first image and the second image is absolutely adjusted by using the manner that the projection distances of the meridional image of the first image and the meridional image of the second image are equal (not absolutely equal).
  • the value achieves the purpose of eliminating ghosting at the same time, thereby realizing the technical effect of imaging the augmented reality image and the vehicle state image, thereby solving the technical problem that the ghost image cannot be simultaneously eliminated.
  • FIG. 1 is a schematic diagram of a ghost that cannot be simultaneously eliminated according to the related art
  • FIG. 2 is a schematic diagram of an augmented reality head-up display device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of augmented reality head display method according to an embodiment of the present application.
  • the above partial terms may be used to indicate other meanings in addition to the orientation or positional relationship, for example, the term “upper” may also be used to indicate a certain dependency or connection relationship in some cases.
  • the specific meaning of these terms in this application can be understood on a case-by-case basis.
  • installation In addition, the terms “installation,” “set,” “set,” “connected,” “connected,” and “socketed” are to be understood broadly. For example, it may be a fixed connection, a detachable connection, or a one-piece construction; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or it may be two devices, components or components. Internal communication.
  • the specific meanings of the above terms in the present application can be understood on a case-by-case basis.
  • Both the inner and outer surfaces of the windshield reflect the projected image of the head-up display device, thereby forming two non-overlapping images.
  • the offset of the two images in the vertical direction is the ghost distance, and the unit is the distance value, such as mm.
  • the angle of the ghost relative to the human eye is defined as the ghost value, and the larger the opening angle, the easier the human eye can detect.
  • Vision Visual optical instruments can be used by people with different visions, so that the image is no longer infinity, but at a certain distance in front of or behind the human eye to meet the needs of myopia or hyperopia.
  • the unit is diopter and the symbol D is indicated. It is represented by the reciprocal of the distance, for example, the imaging is at infinity, the visual acuity is 0D; the imaging is located 1m in front of the human eye, the visual acuity is -1D; it is located 4m in front of the human eye, and the visual acuity is -0.25D.
  • Projection distance The distance from the human eye to the head-up display device to display the virtual image.
  • Astigmatism The image is imaged by the optical system.
  • the meridional image does not coincide with the sagittal image.
  • the distance between the two is called astigmatism.
  • PVB windshield with wedge angle At present, the windshield of passenger car is composed of inner windshield, outer windshield and PVB. PVB is a transparent diaphragm located between the inner and outer glass to improve the windshield. Safety and sound insulation.
  • the conventional PVB diaphragm is a layer of equal thickness diaphragm. With a wedge-shaped PVB windshield, the PVB diaphragm with unequal thickness is used, so that there is a wedge angle between the inner and outer glass of the windshield, which is thin and thick.
  • the inner and outer surfaces of the windshield are not parallel and are used to eliminate ghosting of the head-up display device.
  • FIG. 1 is a schematic diagram of a ghost that cannot be simultaneously eliminated according to the related art; using a reflection principle well known to an optical person, a mirror rotation angle A, and an exiting light rotation angle 2A. Therefore, two images with different imaging distances cannot eliminate ghosting at the same time.
  • the device in this embodiment can effectively solve the two image ghosts in the augmented reality head-up display device for eliminating the ghost problem.
  • the augmented reality head-up display device 100 of the embodiment includes: a mirror group and a display module, wherein the display module is configured to generate a first image source and a second image source; Reflecting the first image source to the windshield to form a first image; the mirror group is further configured to reflect the second image source to the windshield to form a second image; The first image and the second image satisfy a preset condition of determining whether a projection distance of a meridional image of the first image and a meridional image of the second image are equal; if the meridional of the first image Adjusting the astigmatism absolute values of the first image and the second image by equalizing the projection distances of the image and the meridional image of the second image; wherein the astigmatism absolute values of the first image and the second image The range is between 0D and 1.5D.
  • the augmented reality head-up display device in the present application projects two images, the augmented reality image of the far projection distance is the first image, and the vehicle state image of the near projection distance is the second image.
  • the augmented reality head-up display unit is used in conjunction with the wedge angle built into the windshield to project the two images.
  • Determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal means that the meridional images of the first image and the second image are equal in projection distance, or substantially identical, or the difference is small. At this point, you can use the PVB windshield with wedge angle to eliminate the ghosting of the two images.
  • the mirror group includes: a first mirror 3 for use as an optical path of the first image and the second image Share the reflective surface.
  • the two image light paths of the head-up display device proposed by the present invention share one of the large mirrors.
  • the first image and the second image that are formed by the mirror satisfy the following preset conditions, and further include any one or more of the following:
  • the sagittal image imaging distance is ⁇ 4 m; wherein the first image is used to display an augmented reality image; or the sagittal image of the second image is imaged at a distance of 1 m to 5 m; wherein the second image is used for Display vehicle status information.
  • the first image and the second image astigmatism absolute value in the embodiment of the present application are ⁇ 1.5D.
  • the first image sagittal plane image imaging distance ⁇ 4m is used to display an augmented reality image, enhancing the display of the external environment.
  • the sagittal image is imaged at a distance of 7.5 m.
  • the second image sagittal image is imaged at a distance of 1 m to 5 m for displaying vehicle state information.
  • the sagittal image is imaged at a distance of 2 m.
  • the first image and the second image meridional image are imaged at a distance of 3.15 m.
  • the meridional image and the sagittal image have a difference of 0.18D ⁇ 1.5D. If there is a large astigmatism, it is easy to cause driver discomfort, and preferably, the difference in visibility is 0.25D.
  • the mirror group includes: a first mirror 3, a second mirror 4, and a third mirror 5, the first mirror 3 is a curved mirror, and the second mirror 4,
  • the third mirror 5 is a plane mirror or a curved mirror.
  • the first mirror 3, the second mirror 4, and the third mirror 5, the first display module 1 and the second display module 2 are disposed in the head display device housing.
  • the above display module may specifically be an image generating module such as an LCD, an OLED, an LCOS, or a DLP, and a necessary backlighting portion for generating an image source.
  • the first display module emits light, which is sequentially reflected by the anti-second mirror and the first mirror to the windshield to form a first image.
  • the second display module emits light, and is sequentially reflected by the third mirror and the first mirror to the windshield to form a second image. In this way, the first image is located above the second image as viewed along the driver's field of view.
  • the imaging distances of the meridional images of the first image and the second image are substantially identical to ensure that the glass with a specific wedge angle PVB can simultaneously attenuate the ghost.
  • the first mirror is a curved mirror
  • the second mirror and the third mirror are a plane mirror or a curved mirror.
  • the third mirror When the third mirror is a plane mirror, it functions to fold the optical path and compress the volume of the HUD. When the space volume is satisfied, the mirror 3 can be directly removed.
  • a method for implementing the above-described augmented reality head-up display device includes:
  • Step S102 determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal;
  • Step S104 if the projection distances of the meridional image of the first image and the meridional image of the second image are equal, adjusting an astigmatic absolute value of the first image and the second image;
  • the augmented reality head-up display device includes: a mirror group and a display module, the display module is configured to generate a first image source and a second image source; the mirror group is configured to use the first image The source is reflected to the windshield to form a first image; the mirror set is further configured to reflect the second image source to the windshield to form a second image.
  • the astigmatism absolute values of the first image and the second image range from 0D to 1.5D. At least one of the first image and the second image has a large astigmatism, and the absolute value is ⁇ 0.05D. Determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal, and if the projection distances of the meridional image of the first image and the meridional image of the second image are equal, adjusting the first image And an absolute value of the astigmatism of the second image.
  • the absolute value of the first image and the second image astigmatism is ⁇ 1.5D. If there is excessive astigmatism, driving for a long time may cause eye discomfort of the driver.
  • the meridional image of the first image is less than the sagittal image.
  • the first image meridional image is less than the sagittal image.
  • the image is located in the range of 2m to infinity in front of the human eye, the image of the meridian plane is close to the human eye, and the image of the sagittal plane is far from the human eye.
  • the meridional image is located between the human eye and the sagittal image along the line of sight of the human eye.
  • the meridional image of the second image is greater than the sagittal image.
  • the second image meridional image has a larger apparent power than the sagittal image.
  • the meridian image is far from the human eye, and the sagittal image is closer to the human eye.
  • the sagittal image is located between the human eye and the meridian image along the line of sight of the human eye.
  • the first image sagittal plane image is located 10 m in front of the human eye
  • the dioptric power is -0.1
  • the meridional image is located 4 m in front of the human eye
  • the visual acuity is -0.25, -0.25 ⁇ -0.1.
  • the second image sagittal plane image is located 2m in front of the human eye, and the dioptricity is -0.5; the meridional image is located 4m in front of the human eye, and the dioptricity is -0.25, -0.25>-0.5.
  • image one is aligned with image two in a vertical direction, preferably image one is above image two.
  • At least one image of image one and image two has a large astigmatism with an absolute value of ⁇ 0.05D.
  • image one and image two, the meridional image imaging distances are substantially identical.
  • the meridian image distance is not absolutely equal, if there is a very small difference, the imaging effect will be better.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Abstract

一种增强现实抬头显示装置以及消重影方法。该装置包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像；经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件：判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等（S102）；如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值（S104）。解决了风挡式抬头显示装置中无法同时消除重影的技术问题。

Description

增强现实抬头显示装置以及消重影方法
本申请要求于2017年11月22日提交中国专利局，申请号为2017111758064，发明名称为“增强现实抬头显示装置以及消重影方法”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
本申请涉及汽车抬头显示领域，具体而言，涉及一种增强现实抬头显示装置以及消重影方法。
背景技术
增强现实抬头显示装置(英文全称：Augmented Reality-Head Up Display，简称：AR-HUD)，通过投影的图像与实际路面重叠，同时显示传统抬头显示器显示的车速、车况等信息。
现阶段投影的两幅图像，一幅图像为投影距离7米左右的图像，与实际环境重叠，称为：增强现实图像；另一幅图像为投影距离2米左右的图像，显示车速、车况信息，称为：车辆状态图像。
在风挡式抬头显示装置中，消重影方法通常为定制挡风玻璃，挡风玻璃内部聚乙烯醇缩丁醛(英文全称Polyvinyl Butyral，简称：PVB)夹层带有楔角，使得挡风玻璃内外表面不平行。发明人发现，由于聚乙烯醇缩丁醛楔角的角度大小与抬头显示器的参数、投影距离相关。因此，对于上述不同投影距离的两幅图像，无法同时消除重影。特别地，两幅图像投影距离相差越大，重影越严重。
针对相关技术中无法同时消除重影的问题，目前尚未提出有效的解决方案。
申请内容
本申请的主要目的在于提供一种增强现实抬头显示装置，以解决相关技术中无法同时消除重影的问题。
为了实现上述目的，根据本申请的一个方面，提供了一种增强现实抬头显示装置。
一种增强现实抬头显示装置，包括：反射镜组和显示模组，所 述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像；经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件：判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；其中，所述第一图像和所述第二图像的像散绝对值的范围在：0D至1.5D之间。
进一步地，所述反射镜组包括：第一反射镜，所述第一反射镜用于作为所述第一图像和所述第二图像的光路共用反射面。
进一步地，与挡风玻璃内置的楔角配合。
进一步地，经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件还包括如下任一一种或者多种：所述第一图像的弧矢面图像成像距离≥4m；其中，所述第一图像用于显示增强现实图像；所述第二图像的弧矢面图像成像距离1m至5m；其中，所述所述第二图像用于显示车辆状态信息。
进一步地，所述第一图像和所述第二图像像散绝对值≤1.5D。
进一步地，所述反射镜组包括：第一反射镜，第二反射镜以及第三反射镜，所述第一反射镜为曲面镜，所述第二反射镜、第三反射镜为平面镜或曲面镜。
为了实现上述目的，根据本申请的另一方面，提供了一种消重影方法的方法。一种消重影方法的方法，用于增强现实抬头显示装置，所述方法包括：判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；所述增强现实抬头显示装置包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组， 还用于将所述第二图像源反射至挡风玻璃形成第二图像。
进一步地，所述第一图像和所述第二图像的像散绝对值的范围在：0D至1.5D之间。
进一步地，所述第一图像的子午面图像视度小于弧矢面图像视度。
进一步地，所述第二图像的子午面图像视度大于弧矢面图像视度。
在本申请实施例中，采用第一图像的子午图像和第二图像的子午图像的投影距离相等(非绝对相等)的方式，通过调整所述第一图像和所述第二图像的像散绝对值，达到了同时消除重影的目的，从而实现了可对增强现实图像和车辆状态图像成像的技术效果，进而解决了无法同时消除重影的技术问题。
附图说明
构成本申请的一部分的附图用来提供对本申请的进一步理解，使得本申请的其它特征、目的和优点变得更明显。本申请的示意性实施例附图及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据相关技术的无法同时消除重影示意图；
图2是根据本申请实施例的增强现实抬头显示装置示意图；
图3是根据本申请实施例的增强现实抬头显示方法示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请中，术语“上”、“下”、“左”、“右”、“前”、“后”、“顶”、“底”、“内”、“外”、“中”、“竖直”、“水平”、“横向”、“纵向”等指 示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本申请及其实施例，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本申请中的具体含义。
此外，术语“安装”、“设置”、“设有”、“连接”、“相连”“套接”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
本申请中的名词含义：
重影：挡风玻璃内外两个表面均会对抬头显示装置投射图像进行反射，进而形成两幅不重叠的图像。两幅图像在竖直方向的偏移量为重影距离，单位为距离值，如mm。该重影相对人眼的张角，定义为重影值，张角越大，人眼越容易察觉。
视度：目视光学仪器能适应各种不同视力的人使用，使得所成的像不再位于无限远，而是位于人眼前方或后方的一定距离上，以适应近视或远视眼的需要，单位为屈光度，符号D表示。用距离的倒数表示，如，成像位于无穷远，视度0D；成像位于人眼前方1m，视度-1D；位于人眼前方4m，视度-0.25D。
投影距离：人眼到抬头显示装置显示虚像的距离。
像散：一点经光学***成像，子午面图像与弧矢面图像不重合， 两者之间的距离称为像散。
带楔角PVB挡风玻璃：目前乘用车挡风玻璃由内层挡风玻璃、外层挡风、PVB构成，PVB为一层透明膜片，位于内外层玻璃之间，提高挡风玻璃的安全性、隔音特性。常规PVB膜片为一层等厚膜片。带楔角PVB挡风玻璃，采用不等厚的PVB膜片，使得挡风玻璃内外层玻璃之间有一楔角，下薄上厚。挡风玻璃内外表面不平行，用于消除抬头显示装置重影。
图1是根据相关技术的无法同时消除重影示意图；利用了光学人员所共知的反射原理，反射镜旋转角度A，出射光线旋转角度2A。因此，不同成像距离的两幅图像，无法同时消除重影。本实施例中的装置，可针对消除重影问题，可有效解决增强现实抬头显示装置中两幅图像重影。挡风玻璃6、眼盒区域7。第一图像主像81、第一图像副像82、第二图像主像92、第二图像副像91。
图2是根据本申请实施例的增强现实抬头显示装置示意图；还包括了：子午面图像位置。本实施例中的一种增强现实抬头显示装置100，包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像；经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件：判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；其中，所述第一图像和所述第二图像的像散绝对值的范围在：0D至1.5D之间。
具体地，本申请中的增强现实抬头显示装置投影两幅图像，远投影距离的增强现实图像为第一图像，近投影距离的车辆状态图像为第二图像。将增强现实抬头显示装置与挡风玻璃内置的楔角配合使用，可实现投影两幅图像的功能。
判断所述第一图像的子午图像和第二图像的子午图像的投影距 离是否相等是指，第一图像与第二图像的子午图像在投影距离相等，或基本一致，或差异小。此时可以利用带楔角的PVB挡风玻璃，同时消除两幅图像重影。
作为本实施例中的优选，如图2所示，所述反射镜组包括：第一反射镜3，所述第一反射镜3用于作为所述第一图像和所述第二图像的光路共用反射面。
例如，优选地，本发明提出的抬头显示装置两幅图像光路共用其中一块大反射镜。
作为本实施例中的优选，经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件还包括如下任一一种或者多种：所述第一图像的弧矢面图像成像距离≥4m；其中，所述第一图像用于显示增强现实图像；或者，所述第二图像的弧矢面图像成像距离1m至5m；其中，所述所述第二图像用于显示车辆状态信息。
在本申请实施例中的所述第一图像和所述第二图像像散绝对值≤1.5D。
例如，第一图像弧矢面图像成像距离≥4m，用于显示增强现实图像，增强显示外界环境。优选地，弧矢面图像成像距离7.5m。
例如，第二图像弧矢面图像成像距离1m～5m，用于显示车辆状态信息。优选地，弧矢面图像成像距离2m。
优选地，第一图像和第二图像子午面图像成像距离3.15m。
在本申请实施例中的第一图像和第二图像，子午面图像和弧矢面图像视度差0.18D≤1.5D。如果存在较大的像散，容易引起驾驶员不适，优选地，视度差＝0.25D。
如图2所示，所述反射镜组包括：第一反射镜3，第二反射镜4以及第三反射镜5，所述第一反射镜3为曲面镜，所述第二反射镜4、第三反射镜5为平面镜或曲面镜。具体地，在抬头显示装置壳体内设置有第一反射镜3、第二反射镜4、第三反射镜5，第一显示模组1、第二显示模组2。第一图像主像81、第一图像副像82、第二图像主像92、第二图像副像91。
上述的显示模组具体可以为LCD、OLED、LCOS、DLP等图像生成模块及必要的背光照明部分，用以产生图像源。第一显示模组发出光线，依次经反第二射镜、第一反射镜反射至挡风玻璃，形成第一图像。第二显示模组发出光线，依次经第三反射镜、第一反射镜反射至挡风玻璃，形成第二图像。这样一来，沿驾驶员观看视野中，第一图像位于所述第二图像的上方。第一图像和第二图像的子午面图像成像距离基本一致，以保证带特定楔角PVB的玻璃，能够同时削弱重影。
上述第一反射镜为曲面镜，第二反射镜、第三反射镜为平面镜或曲面镜。
上述第三反射镜为平面镜时，起折叠光路、压缩HUD体积的作用，当空间体积满足情况下，反射镜三可直接去除。
从以上的描述中，可以看出，本发明实现了如下技术效果：
采用第一图像的子午图像和第二图像的子午图像的投影距离相等(非绝对相等)的方式，通过调整所述第一图像和所述第二图像的像散绝对值，达到了同时消除重影的目的，从而实现了可对增强现实图像和车辆状态图像成像的技术效果，进而解决了无法同时消除重影的技术问题。
根据本发明实施例，还提供了一种用于实施上述增强现实抬头显示装置的消重影方法，如图3所示，该方法包括：
步骤S102，判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；
步骤S104，如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；
所述增强现实抬头显示装置包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像。
优选地，所述第一图像和所述第二图像的像散绝对值的范围在： 0D至1.5D之间。第一图像和第二图像，至少有一幅图像有较大的像散，绝对值≥0.05D。判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等，如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值。所述第一图像和所述第二图像像散绝对值≤1.5D，如果有过大的像散，则长时间驾驶易引起驾驶员眼睛不适。
优选地，所述第一图像的子午面图像视度小于弧矢面图像视度。第一图像子午面图像视度小于弧矢面图像视度。例如，图像位于人眼前方2m～无穷远范围内时，子午面图像距离人眼近，弧矢面图像距离人眼远。沿人眼视线方向，子午面图像位于人眼和弧矢面图像之间。
优选地，所述第二图像的子午面图像视度大于弧矢面图像视度。第二图像子午面图像视度大于弧矢面图像视度。例如，图像位于人眼前方时，子午面图像距离人眼远，弧矢面图像距离人眼近。沿人眼视线方向，弧矢面图像位于人眼和子午面图像之间。
具体地，第一图像弧矢面图像位于人眼前方10m，视度-0.1，子午面图像位于人眼前方4m，视度-0.25，-0.25＜-0.1。
具体地，第二图像弧矢面图像位于人眼前方2m，视度-0.5；子午面图像位于人眼前方4m，视度-0.25，-0.25＞-0.5。
在一些实施例中，图像一与图像二沿竖直方向排列，优选地图像一位于图像二上方。
在一些实施例中，图像一和图像二，至少有一幅图像有较大的像散，绝对值≥0.05D。
在一些实施例中，图像一和图像二，子午面图像成像距离基本一致。在具体操作时，子午图像距离并不是绝对相等，如果有一个很微小差值，成像效果会更好。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储 装置中由计算装置来执行，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种增强现实抬头显示装置，其特征在于，包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像；经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件：
    判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；
    如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；
    其中，所述第一图像和所述第二图像的像散绝对值的范围在：0D至1.5D之间。
  2. 根据权利要求1所述的增强现实抬头显示装置，其特征在于，所述反射镜组包括：第一反射镜，
    所述第一反射镜用于作为所述第一图像和所述第二图像的光路共用反射面。
  3. 根据权利要求1所述的增强现实抬头显示装置，其特征在于，与挡风玻璃内置的楔角配合。
  4. 根据权利要求1所述的增强现实抬头显示装置，其特征在于，经过所述反射镜组成形的所述第一图像和所述第二图像满足如下的预设条件还包括如下任一一种或者多种：
    所述第一图像的弧矢面图像成像距离≥4m；其中，所述第一图像用于显示增强现实图像；
    所述第二图像的弧矢面图像成像距离1m至5m；其中，所述所述第二图像用于显示车辆状态信息。
  5. 根据权利要求1所述的增强现实抬头显示装置，其特征在于，所述第一图像和所述第二图像像散绝对值≤1.5D。
  6. 根据权利要求1所述的增强现实抬头显示装置，其特征在于，所述反射镜组包括：第一反射镜，第二反射镜以及第三反射镜，所述第一反射镜为曲面镜，所述第二反射镜、第三反射镜为平面镜或曲面镜。
  7. 一种消重影的方法，其特征在于，用于增强现实抬头显示装置，所述方法包括：
    判断所述第一图像的子午图像和第二图像的子午图像的投影距离是否相等；
    如果所述第一图像的子午图像和第二图像的子午图像的投影距离相等，则调整所述第一图像和所述第二图像的像散绝对值；
    所述强现实抬头显示装置包括：反射镜组和显示模组，所述显示模组，用于产生第一图像源和第二图像源；所述反射镜组，用于将所述第一图像源反射至挡风玻璃形成第一图像；所述反射镜组，还用于将所述第二图像源反射至挡风玻璃形成第二图像。
  8. 根据权利要求7所述的消重影方法的方法，其特征在于，所述第一图像和所述第二图像的像散绝对值的范围在：0D至1.5D之间。
  9. 根据权利要求7所述的消重影方法的方法，其特征在于，所述第一图像的子午面图像视度小于弧矢面图像视度。
  10. 根据权利要求7所述的消重影方法的方法，其特征在于，所述第二图像的子午面图像视度大于弧矢面图像视度。
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