WO2019184751A1 - 虚拟现实(vr)头戴式显示设备、vr显示方法及vr显示系统 - Google Patents

虚拟现实(vr)头戴式显示设备、vr显示方法及vr显示系统 Download PDF

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WO2019184751A1
WO2019184751A1 PCT/CN2019/078536 CN2019078536W WO2019184751A1 WO 2019184751 A1 WO2019184751 A1 WO 2019184751A1 CN 2019078536 W CN2019078536 W CN 2019078536W WO 2019184751 A1 WO2019184751 A1 WO 2019184751A1
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Prior art keywords
display
polarizing plate
polarizer
polarization direction
display device
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PCT/CN2019/078536
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English (en)
French (fr)
Inventor
李文宇
张�浩
陈丽莉
刘亚丽
孙玉坤
苗京花
王雪丰
彭金豹
赵斌
李茜
王立新
索健文
范清文
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US16/500,198 priority Critical patent/US20200159037A1/en
Publication of WO2019184751A1 publication Critical patent/WO2019184751A1/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
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • 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
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/163—Wearable computers, e.g. on a belt
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G06F3/012—Head tracking input arrangements
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • 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
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
    • 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
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • G02B2027/0136—Head-up displays characterised by optical features comprising binocular systems with a single image source for both eyes

Definitions

  • the present disclosure relates to a virtual reality (VR) head mounted display device, a VR display method, and a VR display system.
  • VR virtual reality
  • the helmet-type display is the earliest virtual reality (VR) display.
  • the helmet display is used to close the person's visual and auditory sense to the outside world and guide the user to create a feeling in the virtual environment.
  • the display principle is that the left and right eye screens respectively display the images of the left and right eyes, and the human eye obtains such a difference information and generates a stereoscopic effect in the mind.
  • the traditional VR head-mounted display system mostly adopts the dual-screen form, that is, the left and right eyes of the person, each corresponding to a screen, and the observer respectively sees the images on the respective screens through the two eyes to obtain a stereoscopic visual sense.
  • this system has a natural structural design defect, that is, a light barrier, that is, a lens barrel structure, is required between the two lenses and the two screens.
  • the original design is to prevent the observer's eyes from seeing the same screen and causing visual disorder.
  • the problem is that the viewing angle of the system is limited, it is difficult to increase, and the strict alignment relationship is required when the two screens are fixed and fixed, and the structural design precision is required to be high.
  • two screens are required.
  • the shielding plate provided in the middle also increases the structural complexity and weight burden of the system.
  • the liquid crystal layer is added in front of the display screen, and the time-division multiplexing function is used to divide the output images corresponding to the left and right eyes in time, and then pass through the front of the eyes.
  • the polarization function filters out images corresponding to the left and right eyes, but this improvement increases the complexity of the system, affects system stability, and increases cost.
  • Embodiments of the present disclosure provide a VR head mounted display device, a VR display method, and a VR display system
  • a VR head mounted display device comprising: a display screen configured to simultaneously output a first display image having a first polarization direction and a second display image having a second polarization direction, Wherein the first polarization direction is orthogonal to the second polarization direction; a first convex lens configured to amplify the first display image and a second convex lens configured to amplify the second display image; and a first polarizing lens and a first polarizing plate between a left eye of a user of the VR head mounted display device and a right lens disposed between the second convex lens and the user's right eye of the VR head mounted display device a second polarizing plate, wherein the first polarizing plate has a first polarization direction and the second polarizing plate has a second polarization direction.
  • the display screen includes: a display component; a third polarizing plate having the first polarization direction disposed in a light emitting direction of the display component, configured to output the first display image; and having the second A fourth polarizing plate having a polarization direction is disposed in the light emitting direction of the display unit, and is configured to output the second display image.
  • the third polarizer is a first polarizer group, wherein a position of the polarizer in the first polarizer group corresponds to an odd column pixel position of the display component; and the fourth polarizer is a A polarizing plate group, wherein a position of the polarizing plate in the second polarizing plate group corresponds to an even-numbered column pixel position of the display component.
  • the display component is an LCD display component or an OLED display component
  • the third polarizing plate and the fourth polarizing plate are attached to a surface of a light emitting direction of the display component.
  • the third polarizing plate and the fourth polarizing plate are linear polarizing plates.
  • the first polarizing plate and the second polarizing plate are polarizing films respectively formed on a surface of the first convex lens facing the left eye and a polarizing film formed on a surface of the second convex lens facing the right eye.
  • a method of performing VR display using the VR head mounted display device comprising: the display screen simultaneously outputting the first display image having the first polarization direction and The second display image having the second polarization direction, wherein the first polarization direction is orthogonal to the second polarization direction; the first convex lens and the second convex lens respectively facing the first display And the second display image is enlarged; and the first polarizer outputs the enlarged first display image to a left eye of the user, and the second polarizer outputs the second enlarged image The display image is output to the right eye of the user.
  • the display screen includes a display assembly, a third polarizer having a first polarization direction, and a fourth polarizer having a second polarization direction
  • the method includes: disposing the third polarizer on the display a light emitting direction of the component to output the first display image; and a fourth polarizing film disposed in a light emitting direction of the display component to output the second display image.
  • the third polarizer is a first polarizer set
  • the fourth polarizer is a second polarizer set
  • the method includes: positioning a polarizer in the first polarizer set with the The odd-numbered column pixel positions of the display screen are correspondingly set; and the positions of the polarizing plates in the second polarizer group are set corresponding to the even-numbered column pixel positions of the display screen.
  • an external VR display system comprising: the VR head mounted display device.
  • an integrated VR display system that includes the VR head mounted display device.
  • FIG. 1 is a schematic view showing an optical structure of a VR head mounted display system
  • FIG. 2 is a schematic diagram of an optical structure of a VR head mounted display system according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a screen output image manner according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a screen output image manner according to another embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a screen and lens polarization display manner according to an embodiment of the present disclosure.
  • the virtual reality (VR) system is designed with a lens barrel structure, and the lens barrel has two functions, one function is to connect and fix two lenses 3 and 5, and the other function is design.
  • the left eye 1 in the figure is blocked by the lens barrel 8 and can only see the right end of the screen 4, the corresponding image area is 9 and the image area of the double eye overlap area is 7, which This results in a small field of view of the image seen by both eyes.
  • the VR head-mounted display device of the embodiment of the present disclosure includes:
  • a display screen 77 for simultaneously outputting a first display image having a first polarization direction and a second display image having a second polarization direction, the first polarization direction being orthogonal to the second polarization direction; a first convex lens 66 that displays an image for enlargement and a second convex lens 55 that amplifies the second display image; a first between the first convex lens 66 and the left eye 22 of the user of the VR head mounted display device a polarizing plate 11 and a second polarizing plate 44 disposed between the second convex lens 55 and the right eye 33 of the user of the VR head mounted display device, wherein the first polarizing plate 11 has a first polarization direction, and the second polarizing plate 44 Has a second polarization direction.
  • two display images of different polarization directions are outputted by a single screen, and two polarizing plates are disposed between the two convex lenses and the eyes of the user, and the two polarizing plates are disposed.
  • the polarization directions are respectively the same as the polarization directions of the two display images outputted by the display screen 77, and the user can only see the display image of one of the polarization directions on the display screen 77 when the user uses the device, so that the user The picture seen by both eyes synthesizes a stereoscopic image through the brain.
  • the lens barrel spacer 8 in the middle of the lens and the display screen is eliminated, the screen range 88 visible to the viewer by one eye is significantly increased compared to the screen range 7 seen by the dual screen system, and thus the embodiment of the present disclosure is extremely large.
  • the system's field of view is increased, giving the user a better visual experience and a sense of substitution.
  • the display screen 77 includes: a display component 111; a third polarizing plate 222 having a first polarization direction, disposed in a light emitting direction of the display component, for outputting the first display image; having a second polarization
  • the fourth polarizing plate 333 in the direction is disposed in the light emitting direction of the display assembly for outputting the second display image.
  • the third polarizer 222 is a first polarizer group, wherein a position of the polarizer in the first polarizer group corresponds to an odd column pixel position of the display component 111; and a fourth polarizer 333 is a second polarizer group, wherein The position of the polarizer in the second polarizer group corresponds to the even-numbered column pixel position of the display component 111.
  • the pixels of the display component are divided into odd columns and even columns, those skilled in the art can understand that the scheme can also be implemented by dividing the pixels of the display component into odd rows and even rows.
  • the dark color in the display component 111 represents an even column of pixels
  • the light color represents an odd column of pixels
  • the third polarizing plate 222 is disposed on a surface of an odd-numbered column of light colors
  • the fourth polarizing plate 333 is provided.
  • the display component 111 in the embodiment of the present disclosure is an LCD display component or an OLED display component
  • the third polarizing plate 222 and the fourth polarizing plate 333 are attached to the surface of the light emitting direction of the display component 111, and the third polarizing plate 222 and The fourth polarizing plate 333 selects a linear polarizing plate, so that the light emitted by the display component 111 is linearly polarized light, so that two images are outputted on the same screen, and the two images respectively enter the left and right eyes of the user without mutual Influence, so that the observer produces a stereoscopic sense.
  • the first polarizing plate 11 and the second polarizing plate 44 are respectively attached to the first convex lens and face the left eye surface and the second convex lens and face the right eye surface, so that between the polarizing plate and the convex lens The distance is minimal to prevent the middle light from diverging to affect the visual experience.
  • the attachment here can be coating or plating.
  • the display screen outputs two images with different polarization directions, corresponding to the left eye and right eye images, respectively, and the left and right eye images are output on the screen according to the arrangement in the figure.
  • a right eye image may be output for the right half of the screen (dark color representation)
  • the left half of the screen may output a left eye image.
  • an embodiment of the present disclosure may also set a display screen as an even-numbered column of pixels (dark color representation) to output a right-eye image, and an odd-numbered column of pixels (light color representation) of the screen outputs a left-eye image.
  • a display screen is an even-numbered column of pixels (dark color representation) to output a right-eye image
  • an odd-numbered column of pixels (light color representation) of the screen outputs a left-eye image.
  • the screen output uses the interlaced output left and right eye images, that is, the binocular images are simultaneously present on the screen, which is more difficult for the user to detect and the substitution feeling is stronger than the time-division multiplexing technique.
  • An embodiment of the present disclosure further provides a method for performing VR display by using the VR head mounted display device described above, comprising: displaying a first display image having a first polarization direction and a second display having a second polarization direction simultaneously by the display screen An image, wherein the first polarization direction is orthogonal to the second polarization direction; the first convex lens and the second convex lens respectively amplify the first display image and the second display image; the first polarizing plate will enlarge the first display image A display image is output to the left eye of the user, and the second polarizing film outputs the enlarged second display image to the right eye of the user.
  • two polarizing plates whose polarization directions are orthogonal may be disposed in front of the display component of the display screen, wherein the polarizing plate of the first polarization direction is disposed at an odd column pixel position of the display screen, and the polarizing plate of the second polarization direction is disposed at the display
  • the even-numbered column of pixels of the screen so that the user's left or right eye receives an image of one of the polarization directions separately.
  • both eyes look at the screen at the same time, the image of the entire display screen can be received, and the visible screen range is far increased. Large, significantly increased the angle of view of the system, improving the user's sense of substitution and experience.
  • An embodiment of the present disclosure further provides an external VR system, including the VR headset display device and the data processing unit described in the foregoing embodiments, where the data processing unit and the VR head mounted display device are connected by a data line to process data. After being sent to the VR head-mounted display device for display, the processing speed is fast, and the playback picture quality is high.
  • the embodiment of the present disclosure further discloses an integrated VR display system, including the VR head-mounted display device and the data processing unit described in the above embodiments.
  • the data processing unit is disposed inside the VR head-mounted display device, and has no external data. Line restrictions are easy to carry.

Abstract

一种VR头戴式显示设备、VR显示方法及VR显示系统，包括：第一凸透镜(66)、第二凸透镜(55)、分别设置在两凸透镜(66，55)与VR头戴式显示设备的使用者两眼之间的第一偏振片(11)和第二偏振片(44)、显示屏幕(77)，显示屏幕(77)同时输出具有第一偏振方向的第一显示图像和具有第二偏振方向的第二显示图像，第一偏振方向与第二偏振方向正交；第一偏振片(11)具有第一偏振方向，第二偏振片(44)具有第二偏振方向。

Description

虚拟现实(VR)头戴式显示设备、VR显示方法及VR显示系统
相关申请的交叉引用
本申请要求于2018年03月30日向CNIPA提交的名称为“一种VR头戴式显示设备、VR显示方法及VR显示系统”的中国专利申请No.201810278238.9的优先权，其全文通过引用合并于本文。
技术领域
本公开涉及一种虚拟现实(VR)头戴式显示设备、VR显示方法及VR显示系统。
背景技术
头盔式显示器是最早的虚拟现实(VR)显示器，利用头盔显示器将人的对外界的视觉、听觉封闭，引导使用者产生一种身在虚拟环境中的感觉。其显示原理是左右眼屏幕分别显示左右眼的图像，人眼获取这种带有差异的信息后在脑海中产生立体感。传统的VR头戴式显示系统大都采用双屏幕形式，即人的左右眼，各自对应一块屏幕，观察者通过两只眼睛分别看到各自屏幕上的图像从而获得立体视觉感。但是这种系统有着天然的结构设计缺陷，即两块透镜和两块屏幕中间需要有挡光板，也就是镜筒结构，这样的设计初衷是防止观察者的双眼看到同一块屏幕产生视觉错乱，但是其带来的问题是系统的视场角受到限制，很难增大，而且两块屏幕之间安装固定时要满足严格对齐关系，对结构设计精度要求较高，与此同时，两块屏幕中间设置的遮挡板，还增加系统的结构复杂度和重量负担。
公开号为CN205608305U的专利虽然改为单屏幕显示，但在显示屏幕前增加了液晶层，同时利用时分复用功能，在时间上划分出来分别实现对应于左右眼的输出图像，然后通过两眼前的偏振功能筛选出对应左右眼的图像，但这种改进增加了系统的复杂性，影响系统稳定性，同时增加了成本。
发明内容
本公开的实施例提供一种VR头戴式显示设备、VR显示方法及VR显示系统
根据本公开的至少一个实施例，提供一种VR头戴式显示设备，包括：显示屏幕，配置来同时输出具有第一偏振方向的第一显示图像和具有第二偏振方向的第二显示图像，其中第一偏振方向与第二偏振方向正交；配置来对所述第一显示图像进行放大的第一凸透镜和配置来对所述第二显示图像进行放大的第二凸透镜；以及设置在所述第一凸透镜和所述VR头戴式显示设备的使用者左眼之间的第一偏振片和设置在所述第二凸透镜和所述VR头戴式显示设备的该使用者右眼之间的第二偏振片，其中所述第一偏振片具有第一偏振方向，所述第二偏振片具有第二偏振方向。
例如，所述显示屏幕包括：显示组件；具有所述第一偏振方向的第三偏振片，设置在所述显示组件的出光方向上，配置来输出所述第一显示图像；具有所述第二偏振方向的第四偏振片，设置在所述显示组件的所述出光方向上，配置来输出所述第二显示图像。
例如，所述第三偏振片为第一偏振片组，其中该第一偏振片组中的偏振片的位置与所述显示组件的奇数列像素位置相对应；以及所述第四偏振片为第二偏振片组，其中该第二偏振片组中的偏振片的位置与所述显示组件的偶数列像素位置相对应。
例如，所述显示组件为LCD显示组件或OLED显示组件，所述第三偏振片和所述第四偏振片贴附于所述显示组件的出光方向的表面上。
例如，所述第三偏振片和所述第四偏振片为线偏振片。
例如，所述第一偏振片和所述第二偏振片为分别形成在所述第一凸透镜朝向左眼表面上的偏振膜和形成在所述第二凸透镜朝向右眼表面上的偏振膜。
根据本公开的至少一个实施例，提供一种利用所述VR头戴式显示设备进行VR显示的方法，包括：所述显示屏幕同时输出具有所述第一偏振方向的所述第一显示图像和具有所述第二偏振方向的所述第二显示图像，其中所述第一偏振方向与所述第二偏振方向正交；所述第一凸透镜和所述 第二凸透镜分别对所述第一显示图像和所述第二显示图像进行放大；以及所述第一偏振片将所述放大的第一显示图像输出到所述使用者的左眼，所述第二偏振片将所述放大的第二显示图像输出到所述使用者的右眼。
例如，所述显示屏幕包括显示组件、具有第一偏振方向的第三偏振片和具有第二偏振方向的第四偏振片，并且所述方法包括：将所述第三偏振片设置在所述显示组件的出光方向上，以输出所述第一显示图像；以及将所述第四偏振片设置在所述显示组件的出光方向上，以输出所述第二显示图像。
例如，所述第三偏振片为第一偏振片组，所述第四偏振片为第二偏振片组，并且所述方法包括：将该第一偏振片组中的偏振片的位置与所述显示屏的奇数列像素位置对应设置；以及将该第二偏振片组中的偏振片的位置与所述显示屏的偶数列像素位置对应设置。
根据本公开的至少一个实施例，提供一种外接式VR显示系统，包括：所述VR头戴式显示设备。
根据本公开的至少一个实施例，提供一种一体式VR显示系统，包括所述VR头戴式显示设备。
附图说明
以下将结合附图对本公开的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本公开的实施例，其中：
图1为VR头戴显示系统光学结构示意图；
图2为根据本公开的一个实施例提供的VR头戴显示系统光学结构示意图；
图3为根据本公开的一个实施例提供的屏幕输出图像方式示意图；
图4为根据本公开的另一个实施例提供的屏幕输出图像方式示意图；以及
图5为根据本公开的一个实施例提供的屏幕和透镜偏振显示方式示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在无需做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“上”、“下”、等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
发明人注意到，如图1所示，虚拟现实(VR)整机系统设计有镜筒结构，该镜筒有两个作用，一个作用是连接固定两个透镜3和5，另一个作用是设计有长长的镜筒挡板8，该挡板8从透镜延伸到两个屏幕4和6中间，防止左眼1看到右边的屏幕6以及右眼2看到左边的屏幕4，进而避免双眼视觉相互干扰。以左眼1为例，图中左眼1由于受到镜筒挡板8遮挡，只能看到屏幕4的最右端，其对应看到的图像区域是9，双眼重叠区域图像区域是7，这就造成了双眼看到的图像视野范围很小。
如图2所示，本公开实施例的VR头戴式显示设备，包括：
一个显示屏幕77，用于同时输出具有第一偏振方向的第一显示图像和具有第二偏振方向的第二显示图像，第一偏振方向与第二偏振方向正交；用于对所述第一显示图像进行放大的第一凸透镜66和用于对所述第二显示图像进行放大的第二凸透镜55；设置在第一凸透镜66和VR头戴式显示设备的使用者左眼22之间的第一偏振片11和设置在第二凸透镜55和VR头戴式显示设备的使用者右眼33之间的第二偏振片44，其中第一偏振片11具有第一偏振方向，第二偏振片44具有第二偏振方向。
例如，本公开实施例的VR头戴式显示设备中，采用单屏幕输出两幅不同偏振方向的显示图像，同时在两个凸透镜和使用者双眼之间设置两偏 振片，并使两偏振片的偏振方向分别与显示屏幕77输出的两显示图像的偏振方向相同并对应，使用者在使用本设备时，两只眼睛分别只能看到显示屏幕77上其中一个偏振方向的显示图像，这样使用者两只眼睛看到的画面通过大脑合成立体影像。结合图1，由于取消了透镜和显示屏幕中间的镜筒隔板8，观察者单眼可见的屏幕范围88相比较双屏幕系统看到的屏幕范围7显著增大，因此本公开实施例极大的增加了系统的视场角，给使用者带来了更好的视觉体验和代入感。
如图3所示，显示屏幕77包括：显示组件111；具有第一偏振方向的第三偏振片222，设置在显示组件的出光方向上，用于输出所述第一显示图像；具有第二偏振方向的第四偏振片333，设置在显示组件的出光方向上，用于输出所述第二显示图像。
第三偏振片222为第一偏振片组，其中该第一偏振片组中的偏振片的位置与显示组件111的奇数列像素位置相对应；第四偏振片333为第二偏振片组，其中该第二偏振片组中的偏振片的位置与所述显示组件111的偶数列像素位置相对应。在本实施例中，虽然是将显示组件的像素划分为奇数列和偶数列，但是，本领域技术人员可以理解，将显示组件的像素划分为奇数行和偶数行也同样可以实现本方案。
例如，在如图3的实施例中，显示组件111中深色表示偶数列像素，浅色表示奇数列像素，第三偏振片222设于浅颜色的奇数列像素表面，第四偏振片333设于深颜色的偶数列像素表面，只有水平方向的光能穿过奇数列像素表面的第三偏振片222，只有竖直方向的光能穿过偶数列像素表面的第四偏振片333，由于第一偏振片11的偏振方向与第三偏振片222的偏振方向一致，第二偏振片44的偏振方向与第四偏振片333的偏振方向一致，故当使用者通过第一凸透镜66观察时只能看到奇数列像素发出的光，而通过第二凸透镜55观察时只能看到偶数列像素发出的光，这样，当使用者双眼同时从两透镜观察时就能看到整个屏幕的图像，且避免了左右眼的互相干扰，观察视线也不会被任何挡板所阻隔，显著的增大了系统的视场角。
例如，本公开实施例中的显示组件111为LCD显示组件或OLED显示组件，第三偏振片222和第四偏振片333贴附于显示组件111的出光方向 的表面上，第三偏振片222和第四偏振片333选用线偏振片，使显示组件111发出的光为线偏振光，这样就实现了在同一块屏幕上输出两种图像，同时两种图像分别进入使用者的左右眼而互不影响，从而使观察者产生立体视觉感。
例如，为了使视觉效果更佳，第一偏振片11和第二偏振片44分别贴附在第一凸透镜并朝向左眼表面和第二凸透镜并朝向右眼表面，使偏振片与凸透镜之间的距离最小，防止中间的光线发散影响视觉体验。例如，这里的贴附可以为涂布或电镀。
如图4所示，结合图3，显示屏幕输出两种偏振方向不同的图像，分别对应左眼和右眼图像，左右眼图像按图中的排列方式输出在屏幕上。例如，可以为屏幕的右半部分像素(深颜色表示)输出右眼图像，屏幕的左半部分像素(浅颜色表示)输出左眼图像。这样，当使用者双眼观察图像时，左右眼的重叠区就能看到整个屏幕的图像，同时两种图像分别进入使用者的左右眼而互不影响，从而使观察者产生立体视觉感。
例如，如图5所示，本公开的实施例还可以将显示屏幕设置为屏幕的偶数列像素(深颜色表示)输出右眼图像，屏幕的奇数列像素(浅颜色表示)输出左眼图像。这样，当使用者双眼观察图像时，奇数列像素和偶数列像素间隔均匀排列，构成了整个屏幕图像，使使用者看到的画面更均匀。例如，屏幕输出采用的是隔行输出左右眼图像，即双眼图像同时存在屏幕上，相较于采用时分复用技术刷新屏幕，使使用者更不易察觉，代入感更强。
本公开的实施例还提供一种利用上述的VR头戴式显示设备进行VR显示的方法，包括：显示屏幕同时输出具有第一偏振方向的第一显示图像和具有第二偏振方向的第二显示图像，其中第一偏振方向与第二偏振方向正交；第一凸透镜和第二凸透镜分别对所述第一显示图像和第二显示图像进行放大；所述第一偏振片将所述放大的第一显示图像输出到使用者的左眼，所述第二偏振片将所述放大的第二显示图像输出到使用者的右眼。
例如，可以在显示屏幕的显示组件前设置偏振方向正交的两种偏振片，其中第一偏振方向的偏振片设置在显示屏幕的奇数列像素位置上，第二偏 振方向的偏振片设置在显示屏幕的偶数列像素位置上，这样，使用者左眼或右眼单独接收到其中一个偏振方向的图像，当双眼同时看向屏幕时，可接收到整个显示屏幕的图像，可见屏幕范围远远增大，显著的增大了系统的视场角，提升了使用者的代入感和体验。
本公开的实施例还提供一种外接式VR系统，包括上述实施例所述的VR头戴式显示设备及数据处理单元，数据处理单元与VR头戴式显示设备通过数据线连接，将数据处理后发送到VR头戴式显示设备上进行显示，处理速度较快，播放画面质量高。
本公开的实施例还公开了一种一体式VR显示系统，包括上述实施例所述的VR头戴式显示设备及数据处理单元，数据处理单元设于VR头戴式显示设备内部，没有外接数据线的限制，便于携带。
以上所述，仅为本公开的示例实施例，本公开的保护范围并不局限于此，任何熟悉本技术领域的普通技术人员在本公开实施例揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本公开的保护范围之内。

Claims (11)

  1. 一种VR头戴式显示设备，包括：
    显示屏幕，配置来同时输出具有第一偏振方向的第一显示图像和具有第二偏振方向的第二显示图像，其中第一偏振方向与第二偏振方向正交；
    配置来对所述第一显示图像进行放大的第一凸透镜和配置来对所述第二显示图像进行放大的第二凸透镜；以及
    设置在所述第一凸透镜和所述VR头戴式显示设备的使用者左眼之间的第一偏振片和设置在所述第二凸透镜和所述VR头戴式显示设备的该使用者右眼之间的第二偏振片，其中所述第一偏振片具有第一偏振方向，所述第二偏振片具有第二偏振方向。
  2. 根据权利要求1所述的VR头戴式显示设备，其中，所述显示屏幕包括：
    显示组件；
    具有所述第一偏振方向的第三偏振片，设置在所述显示组件的出光方向上，配置来输出所述第一显示图像；
    具有所述第二偏振方向的第四偏振片，设置在所述显示组件的所述出光方向上，配置来输出所述第二显示图像。
  3. 根据权利要求2所述的VR头戴式显示设备，其中，
    所述第三偏振片为第一偏振片组，其中该第一偏振片组中的偏振片的位置与所述显示组件的奇数列像素位置相对应；以及
    所述第四偏振片为第二偏振片组，其中该第二偏振片组中的偏振片的位置与所述显示组件的偶数列像素位置相对应。
  4. 根据权利要求2或3所述的VR头戴式显示设备，其中，所述显示组件为LCD显示组件或OLED显示组件，所述第三偏振片和所述第四偏振片贴附于所述显示组件的出光方向的表面上。
  5. 根据权利要求2-4任一项所述的VR头戴式显示设备，其中，所述第三偏振片和所述第四偏振片为线偏振片。
  6. 根据权利要求1-5任一项所述的VR头戴式显示设备，其中，所述第一偏振片和所述第二偏振片为分别形成在所述第一凸透镜朝向左眼表面上的偏振膜和形成在所述第二凸透镜朝向右眼表面上的偏振膜。
  7. 一种利用权利要求1-6任一项所述的VR头戴式显示设备进行VR显示的方法，包括：
    所述显示屏幕同时输出具有所述第一偏振方向的所述第一显示图像和具有所述第二偏振方向的所述第二显示图像，其中所述第一偏振方向与所述第二偏振方向正交；
    所述第一凸透镜和所述第二凸透镜分别对所述第一显示图像和所述第二显示图像进行放大；以及
    所述第一偏振片将所述放大的第一显示图像输出到所述使用者的左眼，所述第二偏振片将所述放大的第二显示图像输出到所述使用者的右眼。
  8. 根据权利要求7所述的方法，其中，所述显示屏幕包括显示组件、具有第一偏振方向的第三偏振片和具有第二偏振方向的第四偏振片，并且
    所述方法包括：
    将所述第三偏振片设置在所述显示组件的出光方向上，以输出所述第一显示图像；
    将所述第四偏振片设置在所述显示组件的出光方向上，以输出所述第二显示图像。
  9. 根据权利要求8所述的方法，其中，
    所述第三偏振片为第一偏振片组，所述第四偏振片为第二偏振片组，并且所述方法包括：
    将该第一偏振片组中的偏振片的位置与所述显示屏的奇数列像素位置对应设置；以及
    将该第二偏振片组中的偏振片的位置与所述显示屏的偶数列像素位置对应设置。
  10. 一种外接式VR显示系统，包括：根据权利要求1-6中任一项所述的VR头戴式显示设备。
  11. 一种一体式VR显示系统，包括：根据权利要求1-6中任一项所述的VR头戴式显示设备。
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CN108566546A (zh) * 2018-03-28 2018-09-21 中山大学 一种基于人眼跟踪的偏振型立体显示器及控制方法
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