WO2017128310A1 - 头戴式显示设备 - Google Patents

头戴式显示设备 Download PDF

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Publication number
WO2017128310A1
WO2017128310A1 PCT/CN2016/072836 CN2016072836W WO2017128310A1 WO 2017128310 A1 WO2017128310 A1 WO 2017128310A1 CN 2016072836 W CN2016072836 W CN 2016072836W WO 2017128310 A1 WO2017128310 A1 WO 2017128310A1
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WO
WIPO (PCT)
Prior art keywords
lens
image
optical
display device
mounted display
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Application number
PCT/CN2016/072836
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English (en)
French (fr)
Inventor
施宏艳
Original Assignee
深圳市柔宇科技有限公司
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Publication date
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 PCT/CN2016/072836 priority Critical patent/WO2017128310A1/zh
Priority to CN201680011864.0A priority patent/CN107430276B/zh
Publication of WO2017128310A1 publication Critical patent/WO2017128310A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • 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 displays, and more particularly to head mounted display devices.
  • a Head Mounted Display refers to a display device that can be worn on the head.
  • the HMD typically uses a "near-eye optical system" to project a display source on the display screen to the user's eyes.
  • HMD is divided into immersive and transmissive. For immersive devices, in order to let the user completely in the display provided by the device, the contact with the real world is isolated.
  • the current common practice is the HMD external camera.
  • the user can switch the external camera to capture the external scene by switching the external camera as the display output source.
  • the field of view of the HMD external camera is small, the viewable field of view is limited.
  • the field of view of the HMD external camera is large, the picture is severely deformed and the image quality is poor. Therefore, in order to meet the needs of users in different scenarios, it is necessary to develop a solution that can capture clear external scenes from a large perspective.
  • the embodiment of the invention provides a head-mounted display device, which provides a solution for capturing a clear external scene with a large viewing angle.
  • a first aspect of the embodiments of the present invention provides a head mounted display device including a housing, a display screen disposed in the housing, an imaging mirror group, and a display window, and a camera lens group connected to the display screen.
  • the camera lens set includes an optical lens, a vibrating lens, and an image sensor, the optical lens and the vibrating lens are disposed along a first optical axis, and the vibrating lens and the image sensor are disposed along a second optical axis,
  • the optical lens is a large-caliber small-aperture flat-field optical lens in which external light is focused on the image sensor via the optical lens and the oscillating lens, the image sensor converts the optical signal into an image signal, and the An image signal is provided to the display screen for display, and light emitted by the display screen projects through the display window through the display window.
  • the external light is focused on the image through the optical lens and the vibrating lens
  • the image sensor converts the optical signal into an image signal, and provides the image signal to the display screen for display.
  • the light emitted by the display screen is projected through the display window through the display window, because the optical lens has a large aperture and a small aperture.
  • Flat-field optical lens large diameter can ensure that the light in the large field of view can enter the camera.
  • the small aperture can ensure the image quality of the captured image is good, and the deformation rate is small, so that the user can clearly see the large field of view through the head-mounted display device.
  • the outside world The outside world.
  • FIG. 1 is a schematic structural view showing the optical components of a head mounted display device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of optical components of a head mounted display device according to another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of connection between a vibrating lens and a galvanometer motor according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a schematic diagram of a camera lens group capturing a captured object according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a principle of capturing a photographing object by a camera lens group according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of optical components of a head mounted display device according to another embodiment of the present invention.
  • the connected camera lens set 20 includes an optical lens 21, a vibrating lens 22, and an image sensor 23.
  • the optical lens 21 and the vibrating lens 22 are disposed along the first optical axis 24, and the vibrating lens 22 and the image controller 23 are along The second optical axis 25 is disposed, and the optical lens 21 is a large-caliber small-aperture flat-field optical lens, wherein external light is focused on the image sensor 23 via the optical lens 21 and the vibrating lens 22, and the image sensor 23 converts the optical signal into an image signal.
  • the image signal is provided to the display screen 30 for display, and the light emitted by the display screen 30 is projected out of the casing through the display window 50 via the imaging mirror group 40.
  • the two eyes of the user respectively correspond to the display window 50, and the camera lens group 20 captures image information of the outside world, and displays the captured image information on the display screen 30, and the display screen 30
  • the emitted light is projected through the display window 50 through the display window 50 to the user's eyes so that the user can view the outside scene.
  • the camera lens set 20 can be placed outside the casing 10, and the captured scene can be displayed through the display screen 30, as shown in FIG.
  • it can be connected to the display screen 30 in the housing 10 by wire, the connection including a direct or indirect connection, that is, including a camera lens assembly 20 connected to a display module connected to the display screen 30 for processing the image
  • the image signal of the sensor is decoded and converted into a signal that can be displayed by display screen 30.
  • the camera lens set 20 can also be placed in the housing 10, and the through-holes opened by the housing 10 capture the external scene, as shown in FIG.
  • the head mounted display device provided by the present invention further includes a galvanometer motor 24 coupled to the oscillating lens 22 for controlling the rotation of the oscillating lens 22 within a predetermined range of angles.
  • the galvanometer motor 24 and the oscillating lens 22 are connected by a lens holder.
  • the preset angle may be equal to, for example, 8°, 10°, 15°, 20°, 30°, 45°, or other values.
  • FIG. 3 is a schematic diagram of a connection between a vibrating lens and a galvanometer motor according to an embodiment of the present invention
  • FIG. 4 and FIG. 5 are schematic diagrams of capturing a photographing object by a camera lens group according to an embodiment of the present invention.
  • the vibrating lens 22 is rotated by the galvanometer motor 24 from the angle shown in FIG. 4 to the angle shown in FIG. 5, and the imaging lens group 20 can capture a change in the range of the photographed object.
  • the range of objects that the camera lens set 20 can capture is determined by the focal length of the flat field camera 21-a and the angle of oscillation of the oscillating lens 22.
  • the flat field camera 21-a is a thick half-moon shaped lens added to the camera system, and the flat field camera 21-a Mainly to correct the field curvature and improve the image quality of the edge of the field of view.
  • the vibrating lens 22 since the vibrating lens 22 is rotatable, the vibrating lens 22 can be rotated by the galvanometer motor 24 so that the camera lens set 20 can capture a wide range of fields of view.
  • the vibrating lens 22 has two boundary angles corresponding to the range that can capture the maximum shooting. For example, as shown in FIG. 4 and FIG. 5, the swing between the two boundary angles can capture multiple image information in the range. And the plurality of image combinations can be combined to form a large-angle image in a complete range. It will be understood that the illustration is for illustrative purposes only and is not limiting.
  • the first optical axis 24 is at 90° to the second optical axis 25.
  • the head-mounted display device provided by the present invention further includes a processing module 100, configured to process and analyze the image signal acquired by the image sensor 23, determine whether the feature meets the prompt, and output the prompt information.
  • the processing module 100 can be a single chip microcomputer, a micro processing chip, or the like.
  • the determining whether there is a feature that meets the prompt includes determining whether there is a preset specific object feature, such as a hand, a face, or the like, and may also determine whether there is a new object.
  • the image sensor 23 may be a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor).
  • CCD Charge Coupled Device
  • CMOS Complementary Metal-Oxide Semiconductor
  • the processing module 100 is configured to perform processing analysis on the image signal acquired by the CCD 23, where the processing module 100 acquires the first large view image and the second large view image, where the first large view image is acquired at the current time.
  • the large-view image to be obtained, the second-large-view image is a large-view image acquired at a time immediately before the current time and before the current time; the processing module 100 compares and analyzes the first large-view image and the second large-view image. To determine if there is a feature that matches the prompt, and if so, output a prompt to prompt the user.
  • the large-view image is an image obtained by splicing image information acquired by the CCD 23 at different angles of the vibrating lens 22.
  • the processing module 100 is configured to perform processing analysis on the image signal acquired by the CCD 23, where the processing module 100 acquires N large-view images, where N is an integer greater than 1; and the processing module 100 selects N large-view images.
  • the two large-view images that are adjacent to each other are compared and analyzed to determine whether there is a feature that meets the prompt; if so, the processing module 100 determines, according to the N large-view images, whether the feature is close to the user and determines location information of the feature; Feature close
  • the processing module 100 outputs prompt information, which is used to prompt the user that the feature is close to the user, and the prompt information includes location information of the feature.
  • the N large-view images include a first large-view image, a second large-view image, and a third large-view image.
  • the first large-view image corresponds to the first time
  • the second large-view image corresponds to the second time.
  • the large-view image corresponds to the third time, the first time is the current time, the second time is adjacent to the first time and before the first time, and the third time is adjacent to the second time and before the second time
  • the processing module 100 Comparing the second large viewing angle image with the third large viewing angle image to determine whether there is a new object. If the second large viewing angle image is newer than the third large viewing angle image, the processing module 100 detects that Meet the characteristics of the prompt.
  • the processing module 100 further compares and analyzes the first large-view image and the second large-view image to determine whether the newly added object is closer to the user, and if the first large-view image is compared with the second large-view image, the added object is The position moves relative to the user direction, such as closer to the user, and the processing module 100 then outputs the prompt information.
  • the processing module 100 is configured to perform processing analysis on the image signal acquired by the CCD 23, where the processing module 100 acquires the first group of images and the second group of images, where the first group of images corresponds to the first moment.
  • the second group of images corresponds to the second moment, the first moment is the current moment, the second moment is adjacent to the first moment and is located before the first moment, each group of images includes M images, and M is an integer greater than 1.
  • the M images are images acquired by the CCD 23 at the M angles of the vibrating lens 22, and the M images are in one-to-one correspondence with the M angles; the processing module 100 compares and analyzes the first group of images and the second group of images.
  • the processing module 100 determines location information of the feature according to the first set of images and the second set of images, for example, determining that the feature appears in the first few of the group, and determining the corresponding Angle, and outputting prompt information, the prompt information is used to prompt the user to meet the prompt feature appearing in the periphery of the user, and the prompt information includes location information of the feature.
  • the first set of images includes a first image, a second image, and a third image, the first image corresponding to the first angle of the CCD 23 at the vibrating lens 22, and the second image corresponding to the second angle of the CCD 23 at the vibrating lens 22,
  • the third image corresponds to the third angle of the CCD 23 at the vibrating lens 22
  • the second group of images includes the fourth image, the fifth image, and the sixth image, the fourth image corresponds to the first angle
  • the fifth image corresponds to the second angle
  • the sixth image The image corresponding to the third angle
  • the processing module 100 compares and analyzes the first image and the fourth image, compares and analyzes the second image and the fifth image, and compares and analyzes the third image and the sixth image.
  • the processing module 100 detects the feature that meets the prompt. At this time, the processing module 100 determines the first angle of the CCD 23 corresponding to the vibrating lens 22 according to the first image. The location information of the feature is then processed by the processing module 100.
  • the prompting manner of the prompt information may be displaying a text prompt, a voice prompt, displaying an icon prompt, an image prompt, or automatically switching to an abnormal image prompt captured by the camera; and the like.
  • a startup prompt is popped up, thereby solving the problem that the user cannot actively know the external situation when the user wears the device.
  • the head mounted display device provided by the present invention further includes an optical lens 60 in the housing 10, the optical lens 60, the display screen 30, and the imaging lens assembly 40 are disposed along the third optical axis 70, and the optical lens 60 and the display The window 50 is disposed along the fourth optical axis 80.
  • the third optical axis 70 and the fourth optical axis 80 are at 90°.
  • the optical lens 60 is a total reflection mirror.
  • the surface 61 of the optical lens 60 adjacent to the imaging mirror 40 is plated with a visible light total reflection film, and the surface 62 of the optical lens 60 remote from the imaging lens 40 is a frosted surface.
  • the optical lens 60 is at 45° to the third optical axis 70.
  • the head mounted display device provided by the present invention further includes a protective lens 90 disposed on the display window 50.
  • the display window 50 may be a through hole formed in the casing 10 so that light can enter and exit.
  • the protective lens 90 can be fixed to the display window 50, and the protective lens 90 can prevent outside dust and the like from entering the casing 10, thereby avoiding affecting the optical component and its rendering effect.
  • the CCD 23 converts the optical signal into an image signal, and supplies the image signal to the display screen 30 for display.
  • the light emitted by the display screen 30 is projected out of the casing 10 through the display window 50 through the imaging mirror 40.
  • the optical lens 21 is a large-caliber small-aperture flat-field optical lens
  • the large aperture can ensure that light of a large field of view can enter the camera lens group.
  • the small aperture can ensure that the captured image has good image quality and small deformation rate, and the user can capture the external scene of the large field of view through the camera lens group 20 and clearly watch through the head-mounted display device.

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  • Engineering & Computer Science (AREA)
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Abstract

一种头戴式显示设备，包括壳体(10)、置于所述壳体(10)内的显示屏(30)、成像镜组(40)以及显示视窗(50)，以及与所述显示屏(30)连接的摄像镜组(20)，所述摄像镜组(20)包括光学镜头(21)、振镜片(22)以及图像传感器(23)，所述光学镜头(21)与所述振镜片(22)沿着第一光轴(24)配置，所述振镜片(22)与所述图像传感器(23)沿着第二光轴(25)配置，所述光学镜头(21)为大口径小孔径平场光学镜头(21)，其中，外界的光经所述光学镜头(21)以及所述振镜片(22)聚焦于所述图像传感器(23)，所述图像传感器(23)将光信号转换为图像信号，以及将所述图像信号提供至所述显示屏(30)进行显示，所述显示屏(30)发出的光经成像镜组(40)通过所述显示视窗(50)投射出壳体(10)，通过头戴式显示设备可大视角捕捉清晰外界景象。

Description

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”将显示屏幕上的显示源投射至用户的眼睛。HMD分为沉浸式和穿透式，对于沉浸式设备来说，为了让用户完全处于设备提供的显示中，隔离了与现实世界的接触。
为了解决沉浸式HMD隔离了与现实世界的接触的问题，目前通常的做法是HMD外置摄像头，用户可通过切换外置摄像头作为显示输出源，通过HMD显示摄像头捕获的外界景象。但是，当HMD外置摄像头视场角较小时，可观看的视野有限，当HMD外置摄像头视场角较大时，图片变形严重，成像质量较差。因此，为了满足用户在不同场景的需求，研究出一种可大视角捕捉清晰外界景象的方案是很有必要的。
发明内容
本发明实施例提供一种头戴式显示设备，提供一种可大视角捕捉清晰外界景象的方案。
本发明实施例第一方面提供一种头戴式显示设备，包括壳体、置于所述壳体内的显示屏、成像镜组以及显示视窗，以及与所述显示屏连接的摄像镜组，所述摄像镜组包括光学镜头、振镜片以及图像传感器，所述光学镜头与所述振镜片沿着第一光轴配置，所述振镜片与所述图像传感器沿着第二光轴配置，所述光学镜头为大口径小孔径平场光学镜头，其中，外界的光经所述光学镜头以及所述振镜片聚焦于所述图像传感器，所述图像传感器将光信号转换为图像信号，以及将所述图像信号提供至所述显示屏进行显示，所述显示屏发出的光经成像镜组通过所述显示视窗投射出壳体。
本发明公开的头戴式显示设备，外界的光经光学镜头以及振镜片聚焦于图 像传感器，图像传感器将光信号转换为图像信号，以及将所像信号提供至显示屏进行显示，显示屏发出的光经成像镜组通过显示视窗投射出壳体，由于光学镜头为大口径小孔径平场光学镜头，大口径可以保证大视野范围的光线可以进入摄像头，小孔径可以保证捕捉到的图片成像质量好，变形率小，进而用户通过该头戴式显示设备可清晰观看到大视野范围的外界景象。
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为本发明一个实施例的头戴式显示设备的光学元件组成结构示意图；
图2为本发明另一个实施例的头戴式显示设备的光学元件组成结构示意图；
图3为本发明一个实施例提供的振镜片与振镜电机的连接示意图；
图4为本发明一个实施例提供的摄像镜组捕捉拍摄物体的原理示意图；
图5为本发明另一个实施例提供的摄像镜组捕捉拍摄物体的原理示意图；
图6为本发明另一个实施例的头戴式显示设备的光学元件组成结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，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的实施例，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做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
以下分别进行详细说明。
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6，本发明提供的头戴式显示设备包括壳体10、置于壳体10内的显示屏30、成像镜组40以及显示视窗50，以及与显示屏30电连接的摄像镜组20，摄像镜组20包括光学镜头21、振镜片22以及图像传感器23，光学镜头21与振镜片22沿着第一光轴配置24，振镜片22与图像控制器23沿着第二光轴25配置，光学镜头21为大口径小孔径平场光学镜头，其中，外界的光经光学镜头21以及振镜片22聚焦于图像传感器23，图像传感器23将光信号转换为图像信号，以及将图像信号提供至显示屏30进行显示，显示屏30发出的光经成像镜组40通过显示视窗50投射出壳体。当用户佩戴该头戴式显示设备后，用户的两只眼睛分别对应到显示视窗50，摄像镜组20捕捉外界的图像信息，并将捕捉到的图像信息在显示屏30上显示，显示屏30发出的光经成像镜组40通过显示视窗50投射至用户眼睛，从而用户可以观看到外界景象。
其中，摄像镜组20可以置于壳体10外，可将捕获的景象通过显示屏30显示即可，如图1所示。例如可以通过有线方式连接至壳体10内的显示屏30，该连接包括直接或间接的连接，即包括摄像镜组20通过连接至与显示屏30连接的处理模块，该处理模块用于将图像传感器的图像信号进行解码转换为可供显示屏30显示的信号。摄像镜组20也可以置于壳体10内，通过壳体10开设的通孔捕获外界景象，如图2所示。
可选的，本发明提供的头戴式显示设备还包括振镜电机24，与振镜片22连接，用于控制振镜片22在预设角度范围内转动。具体的，振镜电机24与振镜片22通过镜片夹连接。
可选的，上述预设角度例如可以等于8°、10°、15°、20°、30°、45°或是其他值。
举例来说，如图3-图5所示，图3为本发明实施例提供的振镜片与振镜电机连接示意图，图4和图5为本发明实施例提供的摄像镜组捕捉拍摄物体的原理示意图。振镜片22在振镜电机24的作用下，从图4所示的角度旋转到图5所示的角度，摄像镜组20可捕捉拍摄的物体范围发生变化。其中，摄像镜组20可捕捉拍摄的物体范围由平场摄像头21-a焦距和振镜片22摆动角度决定。平场摄像头21-a是在摄像系统中增加的一块半月形的厚透镜，平场摄像头21-a 主要起到校正场曲以及提高视场边缘成像质量的目的。可见，由于振镜片22可转动，因此可通过振镜电机24转动振镜片22使得摄像镜组20可捕捉较大范围的视野。具体的，振镜片22对应可捕捉最大拍摄的范围具有两个边界角度，比如图4及图5所示，于该两个边界角度之间的摆动，即可捕获该范围内的多幅图像信息并可通过该多幅图像组合构成完整范围内的大视角图像。可以理解的是，该图示仅作示例性说明，不具有限定作用。
可选的，第一光轴24与第二光轴25成90°。
可选的，本发明提供的头戴式显示设备还包括处理模块100，该处理模块100用于将图像传感器23获取到的图像信号进行处理分析，判断是否具有符合提示的特征，并输出提示信息。具体的，处理模块100可为单片机、微处理芯片等。
其中，判断是否具有符合提示的特征包括判断是否具有预设的特定物体特征，例如：手、人脸等，也可以为判断是否具有新增物体。
具体的，图像传感器23可以为CCD(Charge Coupled Device，电荷耦合元件)或CMOS(Complementary Metal-Oxide Semiconductor，金属氧化物半导体元件)。以下实施例对图像传感器23采用CCD23加以示意说明。
可选的，处理模块100用于将CCD23获取到的图像信号进行处理分析的具体实现方式有：处理模块100获取第一大视角图像和第二大视角图像，第一大视角图像为当前时刻获取到的大视角图像，第二大视角图像为与当前时刻相邻且位于当前时刻之前的时刻获取到的大视角图像；处理模块100将第一大视角图像和第二大视角图像进行对比分析，以确定是否具有符合提示的特征，若是，则输出提示信息，以提示用户。
其中，大视角图像为CCD23在振镜片22在不同角度下获取到的图像信息拼接而成的图像。
可选的，处理模块100用于将CCD23获取到的图像信号进行处理分析的具体实现方式有：处理模块100获取N张大视角图像，N为大于1的整数；处理模块100将N张大视角图像中任意两张获取时刻相邻的大视角图像进行对比分析，以确定是否具有符合提示的特征；若是，处理模块100根据N张大视角图像确定该特征是否接近用户及确定该特征的位置信息；若该特征接近 用户，处理模块100输出提示信息，该提示信息用于提示用户该特征接近用户，且该提示信息包含该特征的位置信息。
举例来说，上述N张大视角图像包括第一大视角图像、第二大视角图像和第三大视角图像，第一大视角图像对应第一时刻，第二大视角图像对应第二时刻，第三大视角图像对应第三时刻，第一时刻为当前时刻，第二时刻与第一时刻相邻且位于第一时刻之前，第三时刻与第二时刻相邻且位于第二时刻之前，处理模块100将第二大视角图像与第三大视角图像进行对比分析，确定是否有新增物体，若第二大视角图像与第三大视角图像相比新增了某一物体，处理模块100检测到具有符合提示的特征。较优的，还可以进一步判断该新增物体是否具有接近用户的趋势。例如，处理模块100进一步将第一大视角图像与第二大视角图像进行对比分析，确定新增物体是否更加接近用户，若第一大视角图像与第二大视角图像相比，该新增物体位置相对朝向用户方向移动，例如更靠近用户，然后处理模块100输出提示信息。
可选的，处理模块100用于将CCD23获取到的图像信号进行处理分析的具体实现方式有：处理模块100获取第一组图像和第二组图像，第一组图像对应第一时刻，第二组图像对应第二时刻，第一时刻为当前时刻，第二时刻与第一时刻相邻且位于第一时刻之前，每组图像中包含M张图像，M为大于1的整数，M张图像为CCD23在振镜片22的M个角度下获取到的图像，M张图像与M个角度一一对应；处理模块100将第一组图像和第二组图像进行对比分析，以确定是否具有符合提示的特征，若是，处理模块100根据第一组图像和第二组图像确定该特征的位置信息，例如判断该特征出现于该组第几张则可以判定其对应的角度，并输出提示信息，该提示信息用于提示用户符合提示的特征出现于用户周边，且该提示信息包含该特征的位置信息。
举例来说，第一组图像包括第一图像、第二图像和第三图像，第一图像对应CCD23在振镜片22的第一角度，第二图像对应CCD23在振镜片22的第二角度，第三图像对应CCD23在振镜片22的第三角度，第二组图像包括第四图像、第五图像和第六图像，第四图像对应第一角度，第五图像对应第二角度，第六图像对应第三角度，处理模块100将第一图像与第四图像进行对比分析，将第二图像与第五图像进行对比分析，将第三图像与第六图像进行对比分析， 若第一图像与第四图像相比新增了某一物体，处理模块100检测到具有符合提示的特征，此时处理模块100根据获取第一图像时CCD23在振镜片22对应的第一角度确定该特征的位置信息，然后处理模块100输出提示信息。
可选的，提示信息的提示方式可以是显示文字提示、语音提示、显示图标提示、图像提示或是自动切换至摄像头捕获到的异常图像提示；等等。
该实施方式下，当头戴式显示设备通过该摄像镜组20检测到外界具有符合提示的特征出现时，则弹出启动提示，从而解决了用户佩戴该设备时无法主动获知外界情形的问题。
可选的，本发明提供的头戴式显示设备还包括壳体10内的光学镜片60，光学镜片60、显示屏30以及成像镜组40沿着第三光轴配置70，光学镜片60与显示视窗50沿着第四光轴80配置。
可选的，第三光轴70和第四光轴80成90°。
可选的，光学镜片60为全反射镜。
可选的，光学镜片60的靠近成像镜组40的表面61镀有可见光波段全反射膜，光学镜片60的远离成像镜组40的表面62为磨砂表面。
可选的，光学镜片60与第三光轴70成45°。
可选的，本发明提供的头戴式显示设备还包括设置于显示视窗50的保护镜片90。
本发明实施例中，显示视窗50可以为壳体10上开设的通孔，使得光线可以进出。保护镜片90可以固设于显示视窗50，保护镜片90可以防止外界尘埃等进入壳体10内，避免影响光学元件及其呈现效果。
可以看出，本发明公开的头戴式显示设备，外界的光经光学镜头21以及振镜片22聚焦于CCD23，CCD23将光信号转换为图像信号，以及将所像信号提供至显示屏30进行显示，显示屏30发出的光经成像镜组40通过显示视窗50投射出壳体10，由于光学镜头21为大口径小孔径平场光学镜头，大口径可以保证大视野范围的光线可以进入摄像镜组20，小孔径可以保证捕捉到的图片成像质量好，变形率小，进而用户通过摄像镜组20捕获大视野范围的外界景象并通过头戴式显示设备清晰地观看到。
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. 一种头戴式显示设备，其特征在于，包括壳体、置于所述壳体内的显示屏、成像镜组以及显示视窗，以及与所述显示屏连接的摄像镜组，所述摄像镜组包括光学镜头、振镜片以及图像传感器，所述光学镜头与所述振镜片沿着第一光轴配置，所述振镜片与所述图像传感器沿着第二光轴配置，所述光学镜头为大口径小孔径平场光学镜头，其中，外界的光经所述光学镜头以及所述振镜片聚焦于所述图像传感器，所述图像传感器将光信号转换为图像信号，以及将所述图像信号提供至所述显示屏进行显示，所述显示屏发出的光经成像镜组通过所述显示视窗投射出壳体。
  2. 根据权利要求1所述的头戴式显示设备，其特征在于，还包括振镜电机，与所述振镜片连接，用于控制所述振镜片在预设角度范围内转动。
  3. 根据权利要求2所述的头戴式显示设备，其特征在于，所述振镜电机与所述振镜片通过镜片夹连接。
  4. 根据权利要求1-3任一项所述的头戴式显示设备，其特征在于，所述第一光轴与所述第二光轴成90°。
  5. 根据权利要求1-4任一项所述的头戴式显示设备，其特征在于，还包括处理模块，所述处理模块用于将所述图像传感器获取到的所述图像信号进行处理分析，判断是否具有符合提示的特征，若是则输出提示信息。
  6. 根据权利要求5所述的头戴式显示设备，其特征在于，所述输出提示信息包括显示文字提示、输出语音提示、显示图标提示、显示所述靠近的物体的图像提示和/或自动切换显示输出所述摄像镜组捕获的图像。
  7. 根据权利要求1-6任一项所述的头戴式显示设备，其特征在于，还包括置于所述壳体内的光学镜片，用于将所述显示屏的光源经所述成像镜组出射的方向改变至通过所述显示视窗出射的方向，所述光学镜片、所述显示屏以及所述成像镜组沿着第三光轴配置，所述光学镜片与所述显示视窗沿着第四光轴配置。
  8. 根据权利要求7所述的头戴式显示设备，其特征在于，所述第三光轴和所述第四光轴成90°。
  9. 根据权利要求7所述的头戴式显示设备，其特征在于，所述光学镜片为全反射镜。
  10. 根据权利要求7所述的头戴式显示设备，其特征在于，所述光学镜片与所述第三光轴成45°。
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