WO2017113257A1 - 一种头戴式显示设备 - Google Patents

一种头戴式显示设备 Download PDF

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Publication number
WO2017113257A1
WO2017113257A1 PCT/CN2015/100000 CN2015100000W WO2017113257A1 WO 2017113257 A1 WO2017113257 A1 WO 2017113257A1 CN 2015100000 W CN2015100000 W CN 2015100000W WO 2017113257 A1 WO2017113257 A1 WO 2017113257A1
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Prior art keywords
zoom lens
lens group
display screen
head mounted
mounted display
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PCT/CN2015/100000
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English (en)
French (fr)
Inventor
刘自鸿
施宏艳
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Shenzhen Royole Technologies Co Ltd
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Shenzhen Royole Technologies Co Ltd
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Priority to PCT/CN2015/100000 priority Critical patent/WO2017113257A1/zh
Priority to CN201580076855.5A priority patent/CN107250884A/zh
Publication of WO2017113257A1 publication Critical patent/WO2017113257A1/zh
Anticipated expiration legal-status Critical
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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

Definitions

  • the present invention relates to the field of head mounted display, and more particularly to a head mounted display device.
  • a Head Mounted Display refers to a display device that can be worn on the head.
  • the HMD generally uses a "near-eye optical system" to display multimedia information such as images on a display screen a few centimeters from the eyeball.
  • the size of the screen displayed on the display screen of the existing HMD user is fixed, and the distance from the user's eyes to the display screen displayed on the display screen is fixed.
  • different application scenarios such as when playing games or watching movies, may require different screen sizes and distances, and the limited HMD cannot meet the above requirements.
  • the embodiment of the invention provides a head-mounted display device, so as to meet the viewing requirements in different scenarios.
  • a first aspect of an embodiment of the present invention provides a head mounted display for providing images to left and right eyes of a user, including a first zoom lens group, a second zoom lens group, a display screen, and an adjustment mechanism.
  • the light emitted by the display screen enters the left and right eyes through the first and second zoom lens groups, respectively.
  • the adjustment mechanism is coupled to the first and second zoom lens groups and causes them to be simultaneously zoomed.
  • the adjustment mechanism is adjustable from a first position to a second position, and the focal lengths of the first and second zoom lens groups are changed from a first focal length to a second focal length, and the left and right eyes pass the
  • the first and second zoom lens groups view the screen size displayed by the display screen to change from a first size to a second size.
  • the head-mounted display device disclosed by the present invention can adjust the focal length of two zoom lens groups at the same time by adjusting the mechanism, thereby adjusting the size of the display screen displayed by the user. In this way, the user can adjust the size of the display screen according to the actual application scenario, thereby meeting different viewing needs.
  • FIG. 1 is a schematic structural diagram of a head mounted display device according to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a zoom lens group of a head mounted display device according to an embodiment of the present invention
  • FIG. 3 to FIG. 5 are schematic structural views of specific embodiments of the zoom lens group of FIG. 2 at different zoom positions.
  • the present invention provides a head mounted display device for providing images to the left and right eyes of a user, including a first zoom lens group 20; a second zoom lens group 30; a display screen 10;
  • the emitted light enters the left and right eyes through the first zoom lens group 20 and the second zoom lens 30 group respectively; and the adjustment mechanism 40 is connected to the first zoom lens group 20 and the second zoom lens group 30 and is synchronously zoomed;
  • the mechanism 40 can be adjusted from a first position to a second position, and the focal lengths of the first zoom lens group 20 and the second zoom lens group 30 are changed from a first focal length to a second focal length, and the left and right eyes pass the first zoom.
  • the mirror group 20 and the second zoom lens group 30 view the screen size displayed by the display screen 10 from a first size to a second size.
  • the head-mounted display device disclosed by the present invention can simultaneously adjust the focal lengths of the two zoom lens groups through the adjustment mechanism 40, thereby adjusting the size of the display screen of the display screen 10 seen by the user. In this way, the user can adjust the size of the display screen according to the actual application scenario, thereby meeting different viewing needs.
  • the display screen 10 includes a first display screen 11 and a second display screen 12 that can independently control the display screen.
  • the light emitted by the first display screen 11 enters the left eye through the first zoom lens group 20, and the second display screen 12 The emitted light enters the right eye through the second zoom lens group 30. as shown in picture 2.
  • the first display screen 11 and the second display screen 12 of the present invention are not limited to the two separate manners shown in FIG. 2 .
  • the first display screen 11 and the second display screen 12 may also be two parts that display different or the same content separately in an entire display screen, for example, may be a 16:9 ratio in the entire display screen. Two 8:9 parts divided from the middle.
  • the first zoom lens group 20 is disposed under the optical path of the first display screen 11, and the optical axis of the first zoom lens group 20 is perpendicular to the first display screen 11, and the second zoom lens group 30 is placed on the first display. Below the light path of the screen 12, and the optical axis of the first zoom lens group 30 is perpendicular to the first display screen 12.
  • the first zoom lens group 20 is placed under the optical path of the first display screen 11, and the optical axis of the first zoom lens group 20 is perpendicular to the first display.
  • the screen 11, and the second zoom lens group 30 are placed under the optical path of the first display screen 12, and the optical axis of the first zoom lens group 30 is perpendicular to the first display screen 12.
  • the display area of the first or second display screen 11 or 12 may be larger than the cross-sectional area of the first or second zoom lens group 20 or 30 in order to achieve panoramic display.
  • the adjustment mechanism 40 includes N operating positions, each of which corresponds to a focal length of the first and second zoom lens groups 20 and 30, and N is an integer greater than 1.
  • the zoom lens group can be a clear image at multiple focal lengths.
  • a zoom lens group has multiple focal lengths.
  • different operating positions can be set on the adjusting mechanism 40, each operating position. Corresponding to a focal length for the user to make adjustments.
  • the first zoom lens group 20 and the second zoom lens group 30 each include a color changing lens.
  • the color-changing lens is a color-changing glass.
  • the color-changing glass is a glass that changes its color under irradiation of light of a suitable wavelength, and returns to its original color when the light source is removed.
  • the light intensity is high, and the color of the glass is deep. Low luminosity.
  • the light intensity is low, the color of the glass is light, and the light transmittance is high.
  • adding color-changing glass to the focusing mirror group can adjust the light transmittance through the color change of the color-changing glass, so that the human eye can adapt to the change of the ambient light, thereby reducing the visual fatigue, thereby protecting the eye.
  • the position of the first color changing lens group 20 and the second zoom lens group 30 may be the position closest to the display screen, or the position farthest from the display screen, or other positions, and the present invention does not limited.
  • the first zoom lens group 20 and the second zoom lens group 30 are identical in structure.
  • the same structure of the first zoom lens group 20 and the second zoom lens group 30 means that the lens structures of the first zoom lens group 20 and the second zoom lens group 30 that constitute the zoom lens group are the same.
  • the focal length of the first zoom lens group 20 and the second zoom lens group 30 varies by more than 2 mm, more preferably more than 4 mm, or 6 mm, so that the user can clearly perceive the change in picture size.
  • the following is a description of how the present invention is implemented by a specific mirror structure. Since the first zoom lens group 20 and the second zoom lens group 30 are identical in structure, they will be collectively described below.
  • FIG. 3 to FIG. 5 are schematic structural diagrams of specific embodiments of the zoom lens group of FIG. 2 at different zoom positions.
  • the specific data of the composition structure of the zoom lens group is shown in Tables 1 to 3.
  • 1 is an optical design data table of the zoom lens group structure shown in FIG. 3 to FIG. 5, and
  • Table 2 is a table of aspheric surface parameters in the zoom lens group structure shown in FIG. 3 to FIG. 3-Partial parameter table in the zoom lens group structure shown in FIG.
  • Figure 3 corresponding structure
  • Figure 4 corresponding structure
  • Figure 5 corresponding structure L' -2000 -5000.0 -10000.0 X1 16.7 1.1 1.3
  • X2 8.1 10.2 2.6 L 0.5 1.6 3.5 w 15 20 25
  • Table 1Surface represents the optical surface
  • surface type represents the surface type
  • Radius represents the optical surface radius (mm)
  • Thickness represents the thickness (mm) between adjacent surfaces
  • Material represents the optical surface material (nd represents the optical surface refractive index
  • vd represents The optical surface Abbe Changshu)
  • F0 to F10 in Table 1 represent each optical surface from right to left in the zoom optical system shown in FIGS. 3 to 5, as shown in FIG. 3, wherein F0 is a object surface.
  • F10 is the position of the eye entrance
  • F1, F3-F6 and F9 are aspherical surfaces
  • the remaining optical surfaces are spherical.
  • Table 2 is the aspherical parameters of F1, F3-F6 and F9 in Table 1, L in Table 3.
  • the focal length adjustment range of the mirror group is greater than 8 mm.
  • the zoom lens group when the zoom lens group is in the structure shown in FIG. 3, the image of the display screen is displayed at 2 m, and the size is 45 inches; when the zoom lens group is in the structure shown in FIG. 4, it is displayed on the display screen at 5 m.
  • the size is 150 inches; when the zoom lens group is in the structure shown in Fig. 5, the image of the display screen is displayed at 10 m, and the size is 380 inches.
  • the first zoom lens group 20 and the second zoom lens group 30 are detachably replaceable.
  • the first zoom lens group 20 and the second zoom lens group 30 can be close to or away from each other, so that they can be used by users with different lay lengths.
  • the head mounted display device disclosed in the present invention further includes another adjustment mechanism 50.
  • the adjusting mechanism 50 can adjust the positions of the first display screen 11 and the first zoom lens group 20 as a whole, and can adjust the positions of the second display screen 12 and the second zoom lens group 30 as a whole, for example, the adjusting mechanism 50 rotates counterclockwise.
  • the first display screen 11 and the first zoom lens group 20 are horizontally shifted to the left, the second display screen 12 and the second zoom lens group 30 are horizontally shifted to the right, the adjustment mechanism 50 is rotated clockwise, the first display screen 11 and the first The zoom lens group 20 is horizontally shifted to the right, and the second display screen 12 and the second zoom lens group 30 are horizontally shifted to the left. It can be seen that the user can adjust the first display screen 11 and the first zoom lens group 20 through the adjustment mechanism 50. s position, And the positions of the second display screen 12 and the second zoom lens group 30 can be adjusted as a whole so as to be available to users of different pitches.
  • the specific structure of the head mounted display device disclosed in the present invention is not limited to the structure shown in FIG. 1.
  • the specific structure of the head mounted display device shown in FIG. 1 is merely an embodiment.
  • the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or some of the technical features are replaced by equivalents; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.

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Abstract

一种头戴式显示设备，用于向用户的左右眼提供图像，包括：第一变焦镜组（20）；第二变焦镜组（30）；显示屏（11、12），其发出的光通过所述第一及第二变焦镜组（20、30）分别进入左右眼；以及调节机构（40），其连接至所述第一及第二变焦镜组（20、30）并使其同步变焦；所述调节机构（40）可从一个第一位置被调节至一个第二位置，所述第一及第二变焦镜组（20、30）的焦距对应从一个第一焦距变为一个第二焦距，所述左右眼通过所述第一及第二变焦镜组（20、30）观看所述显示屏（11、12）显示的画面尺寸对应从一个第一尺寸变为一个第二尺寸，以满足不同场景下的观看需求。

Description

一种头戴式显示设备 技术领域
本发明涉及头戴式显示领域，尤其涉及一种头戴式显示设备。
背景技术
头戴式显示设备(Head Mounted Display，HMD)指的是可以戴在头上的显示设备。HMD一般使用“近眼光学系统”来在距离眼球几厘米的显示屏幕上显示图像等多媒体信息。现有的HMD用户观看显示屏幕上显示的画面大小是固定的，且用户双眼到显示屏幕显示的显示画面的距离是固定的。然而不同的应用场景，比如用于游戏时或看电影时，用户期望的画面大小及距离可能不同，限于的HMD无法满足上述需求。
发明内容
本发明实施例提供一种头戴式显示设备，以期满足不同场景下的观看需求。
本发明实施例第一方面提供一种头戴式显示器，用于向用户的左右眼提供图像，包括第一变焦镜组，第二变焦镜组，显示屏以及调节机构。所述显示屏发出的光通过所述第一及第二变焦镜组分别进入左右眼。所述调节机构连接至所述第一及第二变焦镜组并使其同步变焦。所述调节机构可从一个第一位置被调节至一个第二位置，所述第一及第二变焦镜组的焦距对应从一个第一焦距变为一个第二焦距，所述左右眼通过所述第一及第二变焦镜组观看所述显示屏显示的画面尺寸对应从一个第一尺寸变为一个第二尺寸。
本发明公开的头戴显示设备可通过调节机构来同时调节两个变焦镜组的焦距，进而调节用户所看到的显示屏显示画面的尺寸。如此，用户可根据实际应用场景来调节显示画面的大小，进而满足不同的观看需求。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例的头戴式显示设备的结构模块示意图；
图2为本发明实施例的头戴式显示设备的变焦镜组的模块示意图；
图3至图5为图2的变焦镜组的具体实施方式在不同的变焦位置的结构示意图。
具体实施方式
本发明的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。
请一并参见图1-图5，本发明提供的头戴式显示设备，用于向用户的左右眼提供图像，包括第一变焦镜组20；第二变焦镜组30；显示屏10、其发出的光通过第一变焦镜组20及第二变焦镜30组分别进入左右眼；以及调节机构40，其连接至第一变焦镜组20及第二变焦镜组30并使其同步变焦；调节机构40可从一个第一位置被调节至一个第二位置，第一变焦镜组20及第二变焦镜组30的焦距对应从一个第一焦距变为一个第二焦距，左右眼通过第一变焦镜组20及第二变焦镜组30观看显示屏10显示的画面尺寸对应从一个第一尺寸变为一个第二尺寸。
可以看出，本发明公开的头戴显示设备可通过调节机构40来同时调节两个变焦镜组的焦距，进而调节用户所看到的显示屏10显示画面的尺寸。如此，用户可根据实际应用场景来调节显示画面的大小，进而满足不同的观看需求。
可选的，显示屏10包括可独立控制显示画面的第一显示屏11和第二显示屏12，第一显示屏11发出的光通过第一变焦镜组20进入左眼，第二显示屏12发出的光通过第二变焦镜组30进入右眼。如图2所示。需要说明的是，本发明的第一显示屏11及第二显示屏12并不限于图2所示的两个单独分离设置的方式。在其它实施方式中，第一显示屏11及第二显示屏12也可以是在一整个显示屏中分开显示不同或相同内容的两个部分，比如可以是一个16:9比例的整个显示屏中从中间划分的两个8:9的部分。
可选的，第一变焦镜组20置于第一显示屏11的光路下方，且第一变焦镜组20的光轴垂直于第一显示屏11，第二变焦镜组30置于第一显示屏12的光路下方，且第一变焦镜组30的光轴垂直于第一显示屏12。
举例来说，为了使得平行光进入第一变焦镜组20，将第一变焦镜组20置于第一显示屏11的光路的下方，且第一变焦镜组20的光轴垂直于第一显示屏11，以及将第二变焦镜组30置于第一显示屏12的光路下方，且第一变焦镜组30的光轴垂直于第一显示屏12。为了使得人眼可观看到显示屏显示的所有画面，需要尽量使显示屏发出的光能够进入第一变焦镜组20和第二变焦镜组30，比如第一变焦镜组20与第一显示屏11等大且处于第一显示屏11的正下方，又如第一变焦镜组20比第一显示屏11大，且第一显示屏11垂直投影落入第一变焦镜组20中。第二变焦模组20同理，不做赘述。当然，在其它实施方式中，为了实现全景显示，第一或第二显示屏11或12的显示面积可大于第一或第二变焦镜组20或30的截面积。
可选的，调节机构40包括N个操作位置，每个操作位置对应所述第一及第二变焦镜组20及30的一个焦距，N为大于1的整数。
举例来说，变焦镜组能在多个焦距下，成清晰的像，通常一个变焦镜组存在多个焦距，为了方便用户调节，可在调节机构40上设置不同的操作位置，每个操作位置对应一个焦距，以便于用户进行调节。
可选的，第一变焦镜组20和第二变焦镜组30均包括变色镜片。
举例来说，变色镜片为变色玻璃，变色玻璃为在适当波长光的辐照下改变其颜色，而移去光源时则恢复其原来颜色的玻璃，比如，光强度高，玻璃的颜色深，透光度低。反之，光强度低，玻璃的颜色浅，透光度高。可见，在聚焦镜组中加入变色玻璃，可使得通过变色玻璃的光变色调节透光度，使得人眼适应环境光线的变化，进而减少视觉疲劳，从而起到保护眼睛的作用。可选的，上述变色镜片在第一变焦镜组20和第二变焦镜组30的位置可以是最靠近显示屏的位置，或是最远离显示屏的位置，或是其他位置，本发明不做限定。
可选的，第一变焦镜组20和第二变焦镜组30结构相同。举例来说，第一变焦镜组20和第二变焦镜组30结构相同表示第一变焦镜组20和第二变焦镜组30包含的组成变焦镜组的镜片结构相同。
优选地，第一变焦镜组20和第二变焦镜组30的焦距变化范围大于2毫米，更优选大于4毫米，或者6毫米，以使用户能明显感受到画面大小的变化。下面将通过一个具体的镜组结构来说明本发明是如何实施的，由于第一变焦镜组20和第二变焦镜组30结构相同，因此下面将统一描述。
如图3-图5所示，图3-图5为图2的变焦镜组的具体实施方式在不同的变焦位置的结构示意图。其中，变焦镜组的组成结构的具体数据如表1～表3所示。其中，表1为图3-图5所示的变焦镜组结构的光学设计数据表格，表2为图3-图5所示的变焦镜组结构中的非球面表面参数表格，表3为图3-图5所示的变焦镜组结构中的部分参数表格。
表1
Figure PCTCN2015100000-appb-000001
表2
Surface K A2 A4 A6 A8
F1 -5.709000E+37 0.00000 1.32200E-03 -1.08100E-06 -1.12000E-07
F4 -0.123000 0.00000 -6.13200E-05 8.99000E-07 -1.05000E-09
F5 -7.123000E+06 0.00000 -4.85600E-06 -5.11300E-08 -2.48000E-10
F6 0.074000 0.00000 8.95000E-08 2.78000E-10 1.71000E-12
F7 5.700000E-02 0.00000 -1.63800E-05 8.87200E-08 -3.92000E-10
F9 7.300000 0.00000 -2.73700E-05 -3.70600E-07 8.93000E-09
表3
  图3对应结构 图4对应结构 图5对应结构
L' -2000 -5000.0 -10000.0
x1 16.7 1.1 1.3
x2 8.1 10.2 2.6
L 0.5 1.6 3.5
w 15 20 25
其中，表1Surface表示光学表面，surface type表示表面类型，Raduis表示光学表面半径(毫米)，Thickness表示相邻表面间的厚度(毫米)，Material表示光学表面材料(nd表示光学表面折射率，vd表示光学表面阿贝常熟)，表1中的F0～F10表示图3-图5所示的变焦光学系统中从右到左的每个光学面，具体如图3所示，其中，F0为物面，F10为眼睛入瞳位置，F1、F3-F6和F9为非球面，其余的光学面为球面，表2为表1中的F1、F3-F6和F9的非球面的参数，表3中L'表示像方距离，L为物方距离，W为像半视场角，x1为表1中的x1，x2为表1中的x2。在上述实施方式中，镜组的焦距调节范围大于8毫米。
其中，变焦镜组在图3所示的结构时，在2m处呈现显示屏成的像，尺寸为45寸；变焦镜组在图4所示的结构时，在5m处呈现显示屏上成的像，尺寸为150寸；变焦镜组在图5所示的结构时，在10m呈现显示屏成的像，尺寸为380寸。
可选的，第一变焦镜组20和第二变焦镜组30可拆卸更换。
可选的，第一变焦镜组20和第二变焦镜组30可相互靠近或远离，从而可供不同瞳距的用户使用。
举例来说，由于不同的用户的眼距有一定的差异，为了使不同的用户能够舒适的使用本发明公开的头戴显示设备，本发明公开的头戴显示设备还包括另一调节机构50，该调节机构50可整体调节第一显示屏11和第一变焦镜组20的位置，以及可整体调节第二显示屏12和第二变焦镜组30的位置，比如该调节机构50逆时针旋转，第一显示屏11和第一变焦镜组20水平向左移，第二显示屏12和第二变焦镜组30水平向右移，该调节机构50顺时针旋转，第一显示屏11和第一变焦镜组20水平向右移，第二显示屏12和第二变焦镜组30水平向左移，可见，用户可通过该调节机构50可整体调节第一显示屏11和第一变焦镜组20的位置， 以及可整体调节第二显示屏12和第二变焦镜组30的位置，从而可供不同瞳距的用户使用。
需要说明的是，本发明公开的头戴式显示设备的具体结构不局限于图1所示的结构，图1所示的头戴式显示设备的具体结构仅仅是一种实施方式。以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，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发明各实施例技术方案的范围。

Claims (10)

  1. 一种头戴式显示器，用于向用户的左右眼提供图像，包括：
    第一变焦镜组；
    第二变焦镜组；
    显示屏，其发出的光通过所述第一及第二变焦镜组分别进入左右眼；以及
    调节机构，其连接至所述第一及第二变焦镜组并使其同步变焦；所述调节机构可从一个第一位置被调节至一个第二位置，所述第一及第二变焦镜组的焦距对应从一个第一焦距变为一个第二焦距，所述左右眼通过所述第一及第二变焦镜组观看所述显示屏显示的画面尺寸对应从一个第一尺寸变为一个第二尺寸。
  2. 根据权利要求1所述的头戴式显示器，其特征在于，所述显示屏包括可独立控制显示画面的第一显示屏和第二显示屏，所述第一显示屏发出的光通过所述第一变焦镜组进入左眼，所述第二显示屏发出的光通过所述第二变焦镜组进入右眼。
  3. 根据权利要求2所述的的头戴式显示器，其特征在于，所述第一变焦镜组置于所述第一显示屏的光路下方，且所述第一变焦镜组的光轴垂直于所述第一显示屏，所述第二变焦镜组置于所述第二显示屏的光路下方，且所述第二变焦镜组的光轴垂直于所述第二显示屏。
  4. 根据权利要求1所述的头戴式显示器，其特征在于，所述第一变焦镜组和第二变焦镜组的焦距变化范围均大于2毫米。
  5. 根据权利要求1所述的头戴式显示器，其特征在于，所述第一变焦镜组和第二变焦镜组的焦距变化范围均大于4毫米。
  6. 根据权利要求1所述的头戴式显示器，其特征在于，所述调节机构包 括N个操作位置，每个操作位置对应所述第一及第二变焦镜组的一个焦距，所述N为大于1的整数。
  7. 根据权利要求1-6任一项所述的头戴式显示器，其特征在于，所述第一变焦镜组和所述第二变焦镜组均包括变色镜片。
  8. 根据权利要求1-6任一项所述的头戴式显示器，其特征在于，所述第一变焦镜组和所述第二变焦镜组结构相同。
  9. 根据权利要求1-6任一项所述的头戴式显示器，其特征在于，所述第一变焦镜组和所述第二变焦镜组可拆卸更换。
  10. 根据权利要求1-6任一项所述的头戴式显示器，其特征在于，所述第一变焦镜组和所述第二变焦镜组可相互靠近或远离。
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