WO2019095095A1 - 头戴显示设备图像调整方法及头戴显示设备 - Google Patents

头戴显示设备图像调整方法及头戴显示设备 Download PDF

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Publication number
WO2019095095A1
WO2019095095A1 PCT/CN2017/110813 CN2017110813W WO2019095095A1 WO 2019095095 A1 WO2019095095 A1 WO 2019095095A1 CN 2017110813 W CN2017110813 W CN 2017110813W WO 2019095095 A1 WO2019095095 A1 WO 2019095095A1
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Prior art keywords
distance
pupil
display device
mounted display
user
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PCT/CN2017/110813
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English (en)
French (fr)
Inventor
李金鑫
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深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201780088325.1A priority Critical patent/CN110418995A/zh
Priority to PCT/CN2017/110813 priority patent/WO2019095095A1/zh
Publication of WO2019095095A1 publication Critical patent/WO2019095095A1/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

Definitions

  • the present invention relates to image adjustment technology, and in particular, to an image adjustment method for a head mounted display device and a head mounted display device.
  • the existing HMD Head Mount Display
  • FIG. 1a and FIG. 1b including a left objective lens 120, a left display 110 and a right objective lens 120, and a right display 110 corresponding to the left and right eyes 130 of the user.
  • the left pupil of the left eye 130 of the user sees the image displayed on the left display 110 through the left objective lens 120
  • the right pupil of the right eye 130 of the user sees the image displayed on the right display 110 through the right objective lens 120.
  • the exit pupil distances L1', L2' between the user's pupil and the objective lens 120 are determined, generally not adjustable, and the exit distance L1 of different users. (See Fig.
  • L2' (see Fig. 1b) is different, and the size of the exit pupil distances L1', L2' affects the size of the image seen by the user's eye 130 on the display screen 110.
  • the exit pupil distance L1' when the exit pupil distance L1' is appropriate, the user's eye 130 can observe the complete image displayed on the display screen 110 (the size of the display screen in FIG. 1a coincides with the size of the image); see FIG. 1b, when When the exit distance L1' is inappropriate, the user's eye 130 cannot observe the complete image displayed on the display screen 110 (as indicated by the dotted line), and only the image in the solid line area can be observed, resulting in the surrounding image not being seen. As a result, some users cannot see the complete image displayed on the display screen 110, that is, a chamfer or a vignetting angle, resulting in a bad user experience.
  • a technical problem to be solved by the embodiments of the present invention is to provide an image adjustment method for a head mounted display device and a head mounted display device. Can enhance the user's experience.
  • the first aspect of the present invention provides a method for adjusting an image of a head mounted display device, including:
  • the actual exit pupil distance is greater than the preset exit pupil distance, reducing the image displayed on the display screen or adjusting the positional relationship between the head mounted display device and the user's pupil so that the actual exit pupil distance after the position adjustment is smaller than Or equal to the preset exit distance so that the user can see the complete image on the display.
  • a second aspect of the present invention provides a head mounted display device, including:
  • a display screen an objective lens, a memory, a processor, and a connection line
  • the objective lens being mounted in front of the display screen
  • the processor, the memory, and the display screen being electrically connected by a connection line
  • the memory stores a group or a plurality of sets of program code
  • the processor invoking program code stored in the memory, performing the following operations:
  • the preset exit pupil distance When the actual exit pupil distance is greater than the preset exit pupil distance, reducing the image on the display screen or adjusting the positional relationship between the head mounted display device and the user's pupil so that the actual exit pupil distance after the position adjustment is less than or equal to The preset exit distance is such that the user can see the complete image on the display.
  • the method for adjusting the image of the head-mounted display device comprises: obtaining an actual exit distance between the user's pupil and the objective lens of the head-mounted display device; determining whether the actual exit pupil distance is greater than a preset exit pupil distance; when the actual exit pupil distance When the distance exceeds the preset exit distance, the image on the display screen is reduced or the positional relationship between the head-mounted display device and the user's pupil is adjusted so that the actual exit distance after the position adjustment is less than or equal to the preset exit distance In order to allow the user to see the complete image on the display, it can prevent the chamfered corners, thus improving the user experience.
  • FIG. 1a is a schematic diagram of a user wearing a head-mounted display device when the distance of the prior art is appropriate;
  • FIG. 1b is a schematic diagram of a user wearing a head-mounted display device when the distance of the prior art is inappropriate;
  • FIG. 2 is a flow chart of an image adjustment method of a head mounted display device according to an embodiment of the present invention
  • FIG. 3 is a specific flow chart of step S130 of Figure 2;
  • FIG. 4 is a schematic diagram of a user wearing a head-mounted display device after the image is reduced according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for adjusting an image of a head mounted display device according to another embodiment of the present invention.
  • Figure 6 is a specific flow chart of step S230 of Figure 5;
  • FIG. 7 is a schematic diagram of a user wearing a head-mounted display device after the objective lens is moved forward according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram showing the hardware structure of a head mounted display device according to an embodiment of the present invention.
  • the head mounted display device includes an objective lens 220 and a display screen 210.
  • the objective lens 220 is located in front of the display screen 210 when the user wears a head. After wearing the display device, the user's eye 230 views the image displayed on the display screen 210 through the objective lens 220.
  • the objective lens 220 includes a left objective lens 220 and a right objective lens 220.
  • the display screen 210 includes a left display screen 210 and a right display screen 210, and the left display screen 210 is disposed corresponding to the left objective lens 220.
  • the right display screen 210 is disposed corresponding to the right objective lens 220, and the left eye 230 of the user observes the image displayed on the left display screen 210 through the left objective lens 220, and the right eye 230 of the user is observed on the right display screen 210 through the right objective lens 220.
  • Image Referring to FIG. 2 and FIG. 4, in the embodiment, the method for adjusting the image of the head mounted display device includes:
  • the objective lens 220 is provided with a distance sensor, and the distance sensor is located on a surface of the objective lens 220 near the pupil side of the user.
  • the distance sensor may also be located.
  • the objective lens is located away from the surface of one side of the user's pupil or at other suitable locations.
  • the number of the distance sensors is two, and the two distance sensors are respectively located at suitable positions of the left objective lens 220 and the right objective lens 220.
  • the head-mounted display device acquires the actual exit distance m between the user's pupil and the objective lens 220 of the head-mounted display device.
  • obtaining the actual exit pupil distance may not be limited to being obtained by distance sensor detection, and may also be obtained by other conventional methods.
  • the distance sensor may be an infrared distance sensor, an ultrasonic distance sensor, or a laser displacement sensor.
  • step S110 specifically includes:
  • the distance sensor on the objective lens 220 detects the distance between the user's pupil and the objective lens 220 of the head mounted display device, in this embodiment.
  • the distance between the user's pupil and the objective lens 220 of the head-mounted display device is the distance between the user's pupil and the distance sensor.
  • the distance between the user's pupil and the objective lens of the head mounted display device is Distance sensor and distance sensor and distance sensor The difference between the distances between the objective lenses (known values); when the distance sensor is located in front of the objective lens, then the distance between the user's pupil and the objective lens of the head-mounted display device is the distance and distance detected by the distance sensor The sum of the distances (known values) between the sensor and the objective.
  • how the distance sensor detects the distance between the distance sensor and the user's pupil is a common knowledge in the art, and therefore will not be described herein.
  • the distance sensor when the distance sensor detects the distance between the user's pupil and the objective lens 220, the distance is the actual exit pupil distance m, so that the head mounted display device acquires the actual exit pupil distance m.
  • the processor of the head mounted display device obtains the actual exit distance m.
  • the actual exit pupil distance may also be obtained by calculation.
  • step S120 determining whether the actual exit distance is greater than the preset exit distance, if yes, proceed to step S130, and if not, proceed to step S140;
  • the head mounted display device determines whether the actual exit pupil distance m is less than or equal to a preset exit pupil distance L.
  • the preset exit pupil distance L is a distance obtained by the head mounted display device manufacturer according to a plurality of experimental measurements, and the preset exit pupil distance L is stored in the head mounted display device, for example, stored in the headset. Display in the device's memory.
  • the head mounted display device can know that the user's eye 230 can see the complete image displayed on the display screen 210 (the user can see the eye at this time).
  • the head mounted display device can know that the user's eyes 230 cannot see the complete image displayed on the display screen 210. Only the area of the solid line frame in FIG. 4 can be seen, so that some peripheral images on the display screen 210 are not visible to the user, and the head mounted display device performs processing in step S130.
  • S130 Reduce the image displayed on the display so that the user can see the complete image on the display.
  • the head mounted display device determines that the actual exit pupil distance m is greater than the preset exit pupil distance L, the user eye 230 may not see the complete image displayed on the display screen 210 at this time, in order to improve The user's experience, in the present embodiment, the head mounted display device reduces the image displayed on the display screen 210, for example, the image displayed on the display screen 210 is from the previous 100% size (the area formed by the dotted frame in FIG. 4) The display is changed to a 95% or 90% size display as shown by the slanted line in FIG.
  • the illustrated image does not have to occupy the entire display screen 210 completely, and the area of the complete image is less than the entire area of the display screen 210.
  • the center point of the image displayed by the display screen 210 is located at the center point of the display screen 210, that is, when the image is reduced, a part of the peripheral area of the display screen 210 does not display an image. These areas are filled with black.
  • the user's eye 230 can see the complete image on the display screen 210 through the objective lens 220, thereby improving the user's experience.
  • step S130 specifically includes:
  • the head-mounted display device obtains a reduction ratio of an image displayed on the display screen corresponding to the actual exit pupil distance m according to the obtained actual exit pupil distance m, for example, different actual exit pupil distances are different.
  • the reduction ratio the larger the actual exit distance m, the larger the reduction ratio, and the smaller the area occupied by the image on the display screen 210.
  • the head mounted display device stores a relationship table between the actual exit pupil distance and the reduction ratio of the image displayed on the display screen, the relationship The table records the relationship between the different actual exit distances m and the different scale reductions of the images.
  • the relationship table can be seen in Table 1 below.
  • step S131 specifically includes:
  • the relationship table is searched according to the actual exit distance m, for example, when the actual exit pupil distance m is 1.05L, That is, when the actual exit distance m is 1.05 times of the preset exit pupil distance L, the actual exit pupil distance falls.
  • the head-mounted display device reduces the image displayed on the display screen 210 to 90% of the original image according to the relationship table, that is, by 10%.
  • the head-mounted display device determines a reduction ratio by a relationship table, the reduction ratio is 90%, 80%, 70%, 60%, 50%, etc., where the reduction ratio is reduced The percentage of the area of the image to the area of the image that is not reduced (the original image).
  • the head mounted display device reduces the image displayed on the display screen 210 according to the reduction ratio, and the image displayed on the display screen is reduced by the image (the complete image is represented by the image)
  • the size of the dotted frame area in 4 is reduced to the size of the area formed by the oblique line filling, so that with this arrangement, the user's eye 230 can see the complete image on the display screen 210, without the periphery of the display as in the prior art. Some of the images are invisible, which enhances the user experience.
  • the head-mounted display device determines that the actual exit pupil distance m is less than or equal to the preset exit pupil distance L, or after the adjustment ends, the user's eye 230 can see the complete display 210. The image does not need to be adjusted and the process ends.
  • the image adjustment method of the head mounted display device includes the following steps:
  • step S220 Determine whether the actual exit pupil distance is greater than a preset exit pupil distance; if yes, proceed to step S230, if no, proceed to step S240.
  • S230 Adjust a positional relationship between the head mounted display device and the user's pupil so that the actual exit pupil distance after the position adjustment is less than or equal to the preset exit pupil distance;
  • the head mounted display device determines that the actual exit pupil distance m is greater than the preset exit pupil distance L, the user eye 330 is likely to not see the image displayed on the full display screen 310 in order to improve the user's
  • the head-mounted display device adjusts the positional relationship between the head-mounted display device and the pupil of the user, so that the actual exit pupil distance m after the position adjustment is less than or equal to the preset exit pupil distance L, The user can see the complete image displayed on the display 310 to improve the user experience.
  • the steps S210, S220, and S240 are the same as those of S110, S120, and S140 in FIG. 2, and are not described herein again.
  • step S230 specifically includes:
  • S231 Obtain a distance value to be reduced between the objective lens and the user's pupil according to the actual exit pupil distance
  • the head-mounted display device obtains a distance value to be reduced between the objective lens 320 and the user's pupil according to the obtained actual exit pupil distance m, for example, different actual exit pupil distances m correspond to different needs.
  • the reduced distance value the larger the actual exit pupil distance m, the larger the distance value to be reduced.
  • the distance value to be reduced is 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, etc., that is, in this embodiment.
  • the distance between the pupil and the objective lens 320 is reduced, that is, the actual exit pupil distance m is reduced, so that the range on the display screen 310 that the user's eyes 330 can see can be increased (see Figure 7).
  • the head mounted display device stores a distance range to be reduced, and the exit distance is reduced.
  • the distance value table records the relationship between different actual exit distances and different distance values to be reduced.
  • the exit distance - the distance value to be reduced can be seen in Table 2 below.
  • step S231 specifically includes:
  • the head-mounted display device finds the distance according to the actual exit distance m - the distance value table to be reduced.
  • the actual exit distance m is 1.25L, that is, the actual exit distance m is the preset exit distance.
  • the actual exit distance m falls within the interval of 1.2L ⁇ m ⁇ 1.4L, so that the head-mounted display device obtains the distance value to be reduced according to the exit distance-reduced distance value table.
  • 0.4L that is, the objective lens 320 is moved forward by 0.4L, so that the distance between the user's pupil and the objective lens 320 is reduced.
  • the actual exit distance m between the user's pupil and the objective lens 320 is smaller than Or equal to the preset exit distance L, so that the user can see the complete image displayed on the display 310.
  • the head-mounted display device obtains a distance value to be reduced by using a distance-reducing distance value table, and the distance value to be reduced is, for example, 0.1. L, 0.2L, 0.4L, 0.6L, 0.8L, etc. (set according to the actual experiment), 0.1L here is 0.1 times the preset exit distance L, that is, between the adjusted objective lens 320 and the user's pupil
  • the distance is the difference between the actual exit distance m before the adjustment and the distance value to be reduced, that is, the distance value that the objective lens 310 needs to be moved forward to be reduced.
  • the head-mounted display device adjusts a distance value between the objective lens 320 and the user's pupil to be reduced, in the embodiment.
  • the head mounted display device controls a distance between the objective lens 320 and the pupil through a motor, for example, the motor rotates one turn to advance the objective lens 320 by 0.1L, and rotates two turns to make the objective lens 320 forward. Move 0.2L.
  • the head mounted display device 100 includes a display screen 510, an objective lens, a memory 520, a processor 530, and a connection line.
  • the objective lens is mounted in front of the display screen 510, and the processor 530, the memory 520, and the display screen 510 are electrically connected by a connection line, wherein the memory 520 stores one or more sets of program codes, the processor 530 calls the program code stored in the memory 520 to perform the following operations:
  • the preset exit pupil distance When the actual exit pupil distance is greater than the preset exit pupil distance, reducing the image on the display screen or adjusting the positional relationship between the head mounted display device and the user's pupil so that the actual exit pupil distance after the position adjustment is less than or equal to The preset exit distance is such that the user can see the complete image on the display.
  • the method when the processor performs the image reduction on the display screen, the method is specifically configured to: determine a reduction ratio of the image displayed by the display screen according to the actual exit distance; and reduce the display on the display according to the reduction ratio The image displayed.
  • the memory stores a relationship table that records an association relationship between different actual exit pupil distances and different reduction ratios of images displayed on the display screen;
  • the distance is specifically determined by searching the relationship table according to the actual exit distance to determine a corresponding reduction ratio.
  • the processor performs the adjustment of the positional relationship between the head-mounted display device and the user's pupil so that the actual exit pupil distance after the position adjustment is less than or equal to the preset exit pupil distance, For: obtaining a distance value to be reduced between the objective lens and the user's pupil according to the actual exit pupil distance; adjusting a distance between the objective lens and the user's pupil to reduce a distance between the objective lens and the user's pupil The distance value to be reduced.
  • the memory stores a distance range-a distance value table to be reduced, and the distance between the exit pupils and the distance value to be reduced records different actual exit distances and different needs to be reduced.
  • the relationship between the distance values and the distance between the objective lens and the user's pupil is obtained according to the actual exit distance, and is specifically used to: find the exit according to the actual exit distance Distance - the distance value to be reduced; the distance value to be reduced between the objective lens and the user's pupil is determined according to the distance between the exit pupil and the distance value to be reduced.
  • the objective lens is provided with a distance sensor
  • the distance sensor is electrically connected to the processor through a connection line
  • the processor performs an operation between acquiring a user's pupil and an objective lens of the head mounted display device.
  • the distance is detected by the distance sensor on the objective lens to detect the distance between the user's pupil and the objective lens of the head mounted display device.
  • the distance sensor is an infrared distance sensor, an ultrasonic distance sensor, or a laser displacement sensor.

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Abstract

一种头戴显示设备图像调整方法，包括：获取用户瞳孔（230、330）与头戴显示设备的物镜（220、320）之间的实际出瞳距离（m）；判断实际出瞳距离是否大于预设出瞳距离（L）；当实际出瞳距离大于预设的出瞳距离时，缩小显示屏（210、310、510）上的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的实际出瞳距离小于或等于预设出瞳距离，以使用户可以看到显示屏上的完整图像。还公开了一种头戴显示设备。这种设备和方法具有可提升用户体验的优点。

Description

头戴显示设备图像调整方法及头戴显示设备 技术领域
本发明涉及图像调整技术，尤其涉及一种头戴显示设备图像调整方法及头戴显示设备。
背景技术
现有的HMD(Head Mount Display，头戴显示设备)，请参见图1a和图1b，包括对应用户左、右眼睛130的左物镜120、左显示屏110和右物镜120、右显示屏110，其中，用户左眼130的左瞳孔透过左物镜120看到左显示屏110上显示的图像，用户右眼130的右瞳孔透过右物镜120看到右显示屏110上显示的图像。一般说来，当用户戴上头戴显示设备后，用户的瞳孔到物镜120之间的出瞳距离L1’、L2’是确定的，一般是不可调的，而不同用户的出瞳距离L1’(请参见图1a)、L2’(请参见图1b)是不同的，出瞳距离L1’、L2’的大小影响到用户眼睛130看到显示屏110上图像的大小。请参见图1a，当出瞳距离L1’合适时，用户眼睛130能观察到显示屏110上显示的完整的图像(图1a中显示屏的大小与图像的大小重合)；请参见图1b，当出瞳距离L1’不合适时，用户眼睛130不能观察到显示屏110上显示的完整的图像(如虚线所示)，只能观察到实线区域内的图像，导致周边的图像看不到，从而导致有些用户不能看到显示屏110上显示的完整图像，也即出现切角或暗角，从而造成用户的体验不好。
发明内容
本发明实施例所要解决的技术问题在于，提供一种头戴显示设备图像调整方法及头戴显示设备。可方提升用户的体验。
为了解决上述技术问题，本发明第一方面实施例提供了一种头戴显示设备图像调整方法，包括：
获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
判断所述实际出瞳距离是否大于预设出瞳距离；
当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上所显示的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像。
本发明第二方面实施例提供了一种头戴显示设备，包括：
包括显示屏、物镜、存储器、处理器和连接线路，所述物镜安装在所述显示屏的前方，所述处理器、存储器、显示屏通过连接线路电连接，其中，所述存储器存储一组或多组程序代码，所述处理器调用所述存储器中存储的程序代码，执行以下操作：
获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
判断所述实际出瞳距离是否大于预设出瞳距离；
当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像。
实施本发明实施例，具有如下有益效果：
由于头戴显示设备图像调整方法包括：获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；判断所述实际出瞳距离是否大于预设出瞳距离；当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像，可以防止切角暗角，从而提升了用户的体验。
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1a是现有技术出瞳距离合适时用户戴上头戴显示设备的示意图；
图1b是现有技术出瞳距离不合适时用户戴上头戴显示设备的示意图；
图2本发明一实施例头戴显示设备图像调整方法的流程图；
图3是图2中步骤S130的具体流程图；
图4本发明一实施例图像缩小后用户戴上头戴显示设备的示意图；
图5本发明另一实施例头戴显示设备图像调整方法的流程图；
图6是图5中步骤S230的具体流程图；
图7本发明一实施例物镜前移后用户戴上头戴显示设备的示意图；
图8是本发明一实施例中的头戴显示设备的硬件结构示意图；
图示标号：
110、210、310、510-显示屏；120、220、320-物镜；130、230、330-用户人眼；520-存储器；530-处理器；L1’、L2’-出瞳距离；m-实际出瞳距离；L-预设出瞳距离。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
本申请说明书、权利要求书和附图中出现的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是用于区别不同的对象，而并非用于描述特定的顺序。
第一实施例
本发明实施例提供一种头戴显示设备图像调整方法，请参见图4，所述头戴显示设备包括物镜220、显示屏210，所述物镜220位于显示屏210的前方，当用户戴上头戴显示设备后，用户的眼睛230通过物镜220观察显示屏210上显示的图像。在本实施例中，所述物镜220包括左物镜220和右物镜220，所述显示屏210包括左显示屏210和右显示屏210，所述左显示屏210对应所述左物镜220设置，所述右显示屏210对应所述右物镜220设置，用户的左眼230通过左物镜220观察到左显示屏210上显示的图像，用户的右眼230通过右物镜220观察到右显示屏210上显示的图像。请参见图2-图4，在本实施例中，所述头戴显示设备图像调整方法包括：
S110：获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
在本实施例中，所述物镜220上设有距离传感器，所述距离传感器位于物镜220靠近用户瞳孔一侧的表面上，当然，在本发明的其他实施例中，所述距离传感器还可以位于物镜远离用户瞳孔的一侧的表面上，或者在其他合适的地方设置。在本实施例中，所述距离传感器的数量为两个，两个所述距离传感器分别位于左物镜220和右物镜220合适的位置上。在本实施例中，当用户戴上头戴显示设备后，头戴显示设备开启后，头戴显示设备获取用户瞳孔与头戴显示设备的物镜220之间的实际出瞳距离m。另外，在本发明的其他实施例中，获得所述实际出瞳距离还可以不限于通过距离传感器侦测获得，还可以通过其他常规的方式获得。在本实施例中，所述距离传感器可以为红外线距离传感器、超声波距离传感器或者激光位移传感器。
在本实施例中，步骤S110具体包括：
通过所述物镜上的距离传感器侦测用户瞳孔与头戴显示设备的物镜之间的距离；
在本实施例中，用户戴上头戴显示设备且所述头戴显示设备开启后，物镜220上的距离传感器侦测用户瞳孔与头戴显示设备的物镜220之间的距离，在本实施例中，用户瞳孔与头戴显示设备的物镜220之间的距离即为用户瞳孔与距离传感器之间的距离。在本发明的其他实施例中，当所述距离传感器不是位于物镜上时，例如当距离传感器位于物镜与显示屏之间时，则此时用户瞳孔与头戴显示设备的物镜之间的距离为距离传感器侦测到的距离与距离传感器和 物镜之间的距离(已知值)的差；当所述距离传感器位于物镜的前方时，则此时用户瞳孔与头戴显示设备的物镜之间的距离为距离传感器侦测到的距离与距离传感器和物镜之间的距离(已知值)的和。本实施例中距离传感器如何侦测其与用户瞳孔之间的距离为本领域的公知常识，因此在此就不在赘述。
在本实施例中，当所述距离传感器侦测到用户瞳孔与物镜220之间的距离时，该距离即为实际出瞳距离m，从而所述头戴显示设备获取所述实际出瞳距离m，具体为所述头戴显示设备的处理器获得所述实际出瞳距离m。另外，在本发明的其他实施例中，所述实际出瞳距离还可以通过计算的方式获得。
S120：判断所述实际出瞳距离是否大于预设出瞳距离，如果是，则进入步骤S130，如果否，则进入步骤S140；
请继续参见图2，在本实施例中，所述距离传感器获得所述实际出瞳距离m后，所述头戴显示设备判断所述实际出瞳距离m是否小于或等于预设出瞳距离L。在本实施例中，该预设出瞳距离L为头戴显示设备制造商根据很多实验测量后得出的距离，该预设出瞳距离L存储在头戴显示设备中，例如存储在头戴显示设备的存储器中。当实际出瞳距离m小于或等于该预设出瞳距离L时，此时头戴显示设备可以知道用户的眼睛230可以看到显示屏210上显示的完整的图像(此时用户眼睛可以看到图4中虚线框的区域)，当实际出瞳距离m大于该预设出瞳距离L时，此时头戴显示设备可以知道用户的眼睛230不可以看到显示屏210上显示的完整的图像，只可以看到图4中实线框的区域，由此显示屏210上的一些周边图像用户看不到，此时头戴显示设备通过步骤S130进行处理。
S130：缩小显示屏上所显示的图像，以使用户瞳孔可以看到显示屏上的完整图像。
在本实施例中，当头戴显示设备判断所述实际出瞳距离m大于预设出瞳距离L时，此时用户眼睛230很有可能看不到显示屏210上显示的完整图像，为了改善用户的体验，在本实施例中，所述头戴显示设备缩小显示屏210上所显示的图像，例如显示屏210上所显示的图像由先前的100％大小(图4中虚线框形成的区域)显示变更为95％或90％大小显示如图4中斜线所示，也即缩小原始图像的尺寸，由于显示屏210所显示的图像的尺寸得到缩小，从而显 示的图像不用完全占用整个显示屏210，此时完整图像的面积小于所述显示屏210的整个面积。在本实施例中，显示屏210显示的图像的中心点位于所述显示屏210的中心点，也即当所述图像缩小后，所述显示屏210的部分周边区域不会显示图像，此时该些区域被填充为黑色。在本实施例中，当所述显示屏210上显示的图像缩小后，用户的眼睛230可以通过物镜220看到显示屏210上的完整图像，从而改善了用户的体验。
在本实施例中，请参见图3，步骤S130具体包括：
S131：根据实际出瞳距离确定显示屏所显示的图像的缩小比例；
在本实施例中，所述头戴显示设备根据获得的实际出瞳距离m，获得对应该实际出瞳距离m时显示屏所显示的图像的缩小比例，例如不同的实际出瞳距离m对应不同的缩小比例，实际出瞳距离m越大，缩小比例越大，图像在显示屏210上所占据的面积越小。
为了根据实际出瞳距离m获得对应的缩小比例，在本实施例中，所述头戴显示设备存储有实际出瞳距离与显示屏所显示的图像的缩小比例之间的关系表，所述关系表记录有不同的实际出瞳距离m与图像的不同的缩小比例的关联关系。在一实施方式中，所述关系表可参见下表1。
表1
实际出瞳距离m 缩小比例
L＜m≤1.1L 90％
1.1L＜m≤1.2L 80％
1.2L＜m≤1.4L 70％
1.4L＜m≤1.6L 60％
1.6L＜m 50％
在本实施例中，步骤S131具体包括：
根据所述实际出瞳距离查找所述关系表确定对应的缩小比例；
在本实施例中，请根据上表1，头戴显示设备获得实际出瞳距离m后，根据实际出瞳距离m查找关系表，例如，当所述实际出瞳距离m为1.05L时，也即实际出瞳距离m为预设出瞳距离L的1.05倍时，此时实际出瞳距离m落 入L＜m≤1.1L的区间内，从而头戴显示设备根据关系表将显示屏210上显示的图像缩小为原先图像的90％，也即缩小了10％。
在本实施例中，所述头戴显示设备通过关系表确定缩小比例，所述缩小比例为90％、80％、70％、60％、50％等，在此处的缩小比例为缩小后的图像的面积与不缩小的图像(原先图像)的面积的百分比。
S132:根据所述缩小比例缩小显示屏上显示的图像。
在本实施例中，获得所述缩小比例后，所述头戴显示设备根据所述缩小比例缩小显示屏210上显示的图像，此时显示屏上显示的图像进行了缩小处理(完整图像由图4中虚线框区域大小缩小为斜线填充形成的区域大小)，从而通过此种设置，用户的眼睛230可以看到显示屏210上的完整图像，不会像现有技术一样显示屏上的周边图像有些看不到，从而提升了用户的体验。
S140：流程结束。
在本实施例中，当头戴显示设备判断所述实际出瞳距离m小于或等于预设出瞳距离L时，或者调整结束后，此时用户的眼睛230可以看到显示屏210上的完整图像，从而不需要进行调整，流程结束。
第二实施例
图5为本发明第二实施例头戴显示设备图像调整方法的流程图，请参见图5-图7，所述头戴显示设备图像调整方法包括步骤：，
S210：获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
S220：判断所述实际出瞳距离是否大于预设出瞳距离；若是，则进入步骤S230，若否，则进入步骤S240。
S230：调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离；
在本实施例中，当头戴显示设备判断所述实际出瞳距离m大于预设出瞳距离L时，此时用户眼睛330很有可能看不全显示屏310上显示的图像，为了改善用户的体验，在本实施例中，所述头戴显示设备调整其与用户瞳孔之间的位置关系，使位置调整后的所述实际出瞳距离m小于或等于所述预设出瞳距离L，以使用户可以看到显示屏310上所显示的完整图像，以改善用户的体验。
S240：流程结束。
其中，步骤S210、S220和S240与图2中的S110、S120、S140相同，在此就不再赘述。
在一实施方式中，请参见图6，步骤S230具体包括：
S231：根据实际出瞳距离，获得所述物镜与用户瞳孔之间需减小的距离值；
在本实施例中，所述头戴显示设备根据获得的实际出瞳距离m，获得所述物镜320与用户瞳孔之间需减小的距离值，例如不同的实际出瞳距离m对应不同的需减小的距离值，实际出瞳距离m越大，需减小的距离值越大，例如，需减小的距离值为2mm、4mm、6mm、8mm、10mm等，也即在本实施例中，通过使物镜320靠近用户的瞳孔，从而减小瞳孔与物镜320之间的距离，也即减小实际出瞳距离m，从而可以增加用户眼睛330可以看到显示屏310上的范围(请参见图7)。
为了根据实际出瞳距离m获得对应的减小距离值，在本实施例中，所述头戴显示设备存储出瞳距离-需减小的距离值表，所述出瞳距离-需减小的距离值表记录有不同实际出瞳距离与不同需减小的距离值的关联关系。在本发明一实施例中，所述出瞳距离-需减小的距离值表可参见下表2。
表2
实际出瞳距离m 需减小的距离值
L＜m≤1.1L 0.1L
1.1L＜m≤1.2L 0.2L
1.2L＜m≤1.4L 0.4L
1.4L＜m≤1.6L 0.6L
1.6L＜m 0.8L
具体的，步骤S231具体包括：
根据所述实际出瞳距离，查找所述出瞳距离-需减小的距离值关系表；并根据该出瞳距离-需减小的距离值关系表确定所述物镜与用户瞳孔之间需减小的距离值。
在本实施例中，请根据上表2，头戴显示设备获得实际出瞳距离m后，头 戴显示设备根据实际出瞳距离m查找出瞳距离-需减小的距离值表，例如，当所述实际出瞳距离m为1.25L时，也即实际出瞳距离m为预设出瞳距离L的1.25倍时，此时实际出瞳距离m落入1.2L＜m≤1.4L的区间内，从而头戴显示设备根据出瞳距离-需减小的距离值表获得需减小的距离值为0.4L，也即将物镜320前移0.4L，从而使用户瞳孔与物镜320之间的距离减小，在本实施例中，调整后，用户瞳孔与物镜320之间的实际出瞳距离m小于或等于预设出瞳距离L，从而用户可以看到显示屏310上所显示的完整图像。
在本实施例中，根据实际出瞳距离m，所述头戴显示设备通过出瞳距离-需减小的距离值表获得需减小的距离值，所述需减小的距离值例如为0.1L、0.2L、0.4L、0.6L、0.8L等(根据实际实验进行设置)，在此处的0.1L为预设出瞳距离L的0.1倍，也即调整后物镜320与用户瞳孔之间的距离为调整前实际出瞳距离m与需减小的距离值的差，也即物镜310需向前移动需减小的距离值。
S232:调整所述物镜320与所述用户瞳孔之间的距离，使物镜320与用户瞳孔之间的距离减少所需减小的距离值。
在本实施例中，获得所述需减小的距离值后，所述头戴显示设备调整所述物镜320与所述用户瞳孔之间的距离减小需减小的距离值，在本实施例中，所述头戴显示设备通过电机控制所述物镜320与所述瞳孔之间的距离，例如所述电机转动一圈使所述物镜320前移0.1L，转动两圈使所述物镜320前移0.2L。从而通过往前移动物镜320，用户的眼睛330可以看到显示屏310上的区域得到增大，从而可以看到显示屏310上的完整图像，不会像现有技术显示屏上的周边图像有些看不到，从而提升了用户的体验。
下面将结合附图8对本发明实施例提供的头戴显示设备进行详细介绍。请参见图8，在本实施例中，头戴显示设备100包括显示屏510、物镜、存储器520、处理器530和连接线路。所述物镜安装在所述显示屏510的前方，所述处理器530、存储器520、显示屏510通过连接线路电连接，其中，所述存储器520存储一组或多组程序代码，所述处理器530调用所述存储器520中存储的程序代码，执行以下操作：
获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
判断所述实际出瞳距离是否大于预设出瞳距离；
当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像。
在本发明一实施例中，所述处理器执行缩小显示屏上的图像时，具体用于：根据实际出瞳距离确定显示屏所显示的图像的缩小比例；根据所述缩小比例缩小显示屏上显示的图像。在一种具体实现方式中，所述存储器存储有记录了不同的实际出瞳距离与显示屏所显示的图像的不同缩小比例之间的关联关系的关系表；所述处理器执行根据实际出瞳距离确定显示屏所显示的图像的缩小比例时，具体用于：根据所述实际出瞳距离查找所述关系表确定对应的缩小比例。
在本发明一实施例中，所述处理器执行调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离时，具体用于：根据实际出瞳距离，获得所述物镜与用户瞳孔之间需减小的距离值；调整所述物镜与所述用户瞳孔之间的距离，使物镜与用户瞳孔之间的距离减少所需减小的距离值。在一种具体实现方式中，所述存储器存储出瞳距离-需减小的距离值表，所述出瞳距离-需减小的距离值表记录有不同实际出瞳距离与不同的需减小的距离值的关联关系；所述处理器执行根据实际出瞳距离获得所述物镜与用户瞳孔之间需减小的距离值时，具体用于：根据所述实际出瞳距离查找所述出瞳距离-需减小的距离值；根据该出瞳距离-需减小的距离值关系表确定所述物镜与用户瞳孔之间需减小的距离值。
在本发明一实施例中，所述物镜上设有距离传感器，所述距离传感器通过连接线路与所述处理器电连接，所述处理器执行获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离时，具体用于：通过所述物镜上的距离传感器侦测用户瞳孔与头戴显示设备的物镜之间的距离。在本实施例中，所述距离传感器为红外线距离传感器、超声波距离传感器或者激光位移传感器。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置实施例而言，由于其与方法实施例基本相似，所以 描述的比较简单，相关之处参见方法实施例的部分说明即可。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (14)

  1. 一种头戴显示设备图像调整方法，其特征在于，包括：
    获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
    判断所述实际出瞳距离是否大于预设出瞳距离；
    当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上所显示的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像。
  2. 如权利要求1所述的头戴显示设备图像调整方法，其特征在于，所述缩小显示屏上所显示的图像步骤具体包括：
    根据实际出瞳距离确定显示屏所显示的图像的缩小比例；
    根据所述缩小比例缩小显示屏上显示的图像。
  3. 如权利要求2所述的头戴显示设备图像调整方法，其特征在于，所述头戴显示设备存储有记录了不同的实际出瞳距离与显示屏所显示的图像的不同缩小比例之间的关联关系的关系表；所述根据实际出瞳距离确定显示屏所显示的图像的缩小比例的步骤具体包括：
    根据所述实际出瞳距离查找所述关系表确定对应的缩小比例。
  4. 如权利要求1所述的头戴显示设备图像调整方法，其特征在于，所述调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离的步骤具体包括：
    根据实际出瞳距离，获得所述物镜与用户瞳孔之间需减小的距离值；
    调整所述物镜与所述用户瞳孔之间的距离，使物镜与用户瞳孔之间的距离减少所需减小的距离值。
  5. 如权利要求4所述的头戴显示设备图像调整方法，其特征在于，所述头戴显示设备存储出瞳距离-需减小的距离值表，所述出瞳距离-需减小的距离 值表记录有不同实际出瞳距离与不同的需减小的距离值的关联关系；所述根据实际出瞳距离获得所述物镜与用户瞳孔之间需减小的距离值的步骤具体包括：
    根据所述实际出瞳距离，查找所述出瞳距离-需减小的距离值表；
    根据该出瞳距离-需减小的距离值关系表确定所述物镜与用户瞳孔之间需减小的距离值。
  6. 如权利要求1-5任意一项所述的头戴显示设备图像调整方法，其特征在于，所述获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离的步骤具体包括：
    通过所述物镜上的距离传感器侦测用户瞳孔与头戴显示设备的物镜之间的距离。
  7. 如权利要求6所述的头戴显示设备图像调整方法，其特征在于，所述距离传感器为红外线距离传感器、超声波距离传感器或者激光位移传感器。
  8. 一种头戴显示设备，其特征在于，包括显示屏、物镜、存储器、处理器和连接线路，所述物镜安装在所述显示屏的前方，所述处理器、存储器、显示屏通过连接线路电连接，其中，所述存储器存储一组或多组程序代码，所述处理器调用所述存储器中存储的程序代码，执行以下操作：
    获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离；
    判断所述实际出瞳距离是否大于预设出瞳距离；
    当所述实际出瞳距离大于预设的出瞳距离时，缩小显示屏上的图像或者调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离，以使用户可以看到显示屏上的完整图像。
  9. 如权利要求8所述的头戴显示设备，其特征在于，所述处理器执行缩小显示屏上的图像时，具体用于：
    根据实际出瞳距离确定显示屏所显示的图像的缩小比例；
    根据所述缩小比例缩小显示屏上显示的图像。
  10. 如权利要求9所述的头戴显示设备，其特征在于，所述存储器存储有记录了不同的实际出瞳距离与显示屏所显示的图像的不同缩小比例之间的关联关系的关系表；所述处理器执行根据实际出瞳距离确定显示屏所显示的图像的缩小比例时，具体用于：
    根据所述实际出瞳距离查找所述关系表确定对应的缩小比例。
  11. 如权利要求8所述的头戴显示设备，其特征在于，所述处理器执行调整头戴显示设备与用户瞳孔之间的位置关系使位置调整后的所述实际出瞳距离小于或等于所述预设出瞳距离时，具体用于：
    根据实际出瞳距离，获得所述物镜与用户瞳孔之间需减小的距离值；
    调整所述物镜与所述用户瞳孔之间的距离，使物镜与用户瞳孔之间的距离减少所需减小的距离值。
  12. 如权利要求11所述的头戴显示设备，其特征在于，所述存储器存储出瞳距离-需减小的距离值表，所述出瞳距离-需减小的距离值表记录有不同实际出瞳距离与不同的需减小的距离值的关联关系；所述处理器执行根据实际出瞳距离获得所述物镜与用户瞳孔之间需减小的距离值时，具体用于：
    根据所述实际出瞳距离查找所述出瞳距离-需减小的距离值；
    根据该出瞳距离-需减小的距离值关系表确定所述物镜与用户瞳孔之间需减小的距离值。
  13. 如权利要求8-12任意一项所述的头戴显示设备，其特征在于，所述物镜上设有距离传感器，所述距离传感器通过连接线路与所述处理器电连接，所述处理器执行获取用户瞳孔与头戴显示设备的物镜之间的实际出瞳距离时，具体用于：
    通过所述物镜上的距离传感器侦测用户瞳孔与头戴显示设备的物镜之间的距离。
  14. 如权利要求13所述的头戴显示设备，其特征在于，所述距离传感器为红外线距离传感器、超声波距离传感器或者激光位移传感器。
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