WO2017113245A1 - 可自动调节的头戴式显示设备及其调节方法 - Google Patents
可自动调节的头戴式显示设备及其调节方法 Download PDFInfo
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- G02B27/02—Viewing or reading apparatus
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- the present invention relates to a display device, and more particularly to a head mounted display device and a method of adjusting the same.
- Current head-mounted display devices generally include a display device and a headphone device, and the display device and the earphone device are connected by a connection mechanism, such as a plug-in connection.
- the earphone device comprises an annulus and an earpiece at both ends of the annulus, and the earpiece and the annulus are also connected by a corresponding connecting mechanism.
- different wearers due to individual differences in the wearer's face shape, head shape, etc., different wearers generally need to adjust.
- the user can adjust the display effect of the viewing screen by adjusting the distance between the display device and the earphone device by adjusting the connection mechanism between the display device and the earphone device.
- the user can also adjust the connection mechanism between the annulus and the earpiece to adjust the tightness of the annulus and the earpiece to increase the wearing comfort.
- the user manually adjusts the corresponding connection mechanism, the adjustment is time consuming and laborious, and it is not easy to adjust to the correct or appropriate wearing manner. Improper wearing can result in incomplete viewing, display image distortion, unclear images, oppression, dizziness and other discomfort, and even damage to vision.
- the embodiment of the invention discloses a head-mounted display device and an adjustment method thereof, which can automatically adjust the head-mounted display device to a better wearing state suitable for the wearer.
- An automatically adjustable head mounted display device includes a display device, an earphone device and a first connecting member, and the display device and the earphone device are movably connected by the first connecting member.
- the display device includes a display assembly, a first laser range finder, a first driving member, and a first controller.
- the first laser range finder transmits the distance from the user's eyes through the display component.
- the first driving member is coupled to the first connecting member.
- the first controller determines whether the distance detected by the first laser range finder is within a preset standard range, and if not, controls the first driving member to drive the movement of the first connecting member to change the display device and the earphone
- the distance between the devices is such that the distance between the display device and the earphone device is within the preset standard range.
- the adjustment method of the head mounted display device disclosed in the embodiment of the invention is used for adjusting the head-mounted display
- the device includes the steps of: detecting a distance from the user's eyes through a first laser range finder disposed on the display device of the head mounted display device; determining whether the distance detected by the first laser range finder is Within a predetermined standard range; and if not within the preset standard range, controlling the first driver to drive the first connector movement to change the distance between the display device and the earphone device, such that the distance between the display device and the earphone device Within the preset standard range.
- the head-mounted display device and the control method of the present invention can automatically adjust the head-mounted display device to a better wearing state suitable for the wearer.
- FIG. 1 is a perspective view of a head mounted display device in accordance with an embodiment of the present invention.
- FIG. 2 is a functional block diagram of a display device of a head mounted display device according to an embodiment of the present invention
- FIG. 3 is an optical structural view of a display device of a head mounted display device according to an embodiment of the present invention.
- FIG. 4 is a schematic structural view of a laser range finder of a head mounted display device according to an embodiment of the present invention.
- FIG. 5 is a functional block diagram of an earphone device of a head mounted display device according to an embodiment of the present invention.
- FIG. 6 is a flowchart of a method for adjusting a head mounted display device according to an embodiment of the present invention.
- FIG. 1 is a perspective view of a head mounted display device 100 according to an embodiment of the invention.
- the head mounted display device 100 includes a display device 10 and an earphone device 20.
- Display device 10 and earphone The device 20 is movably connected by a first connector 102.
- the earphone device 20 includes an endless belt 21, an earpiece 22 at both ends of the endless belt 21, and a second connecting member 23 through which the earpiece 22 and the earpieces 22 at both ends are movably connected.
- FIG. 2 is a structural block diagram of a display device 10 according to an embodiment of the present invention.
- the display device 20 includes a display assembly 11, a first laser range finder 12, a first controller 13, and a first driver 14.
- the first laser range finder 12 transmits the distance from the user's eyes 200 through the display assembly 11.
- the first controller 13 determines whether the distance detected by the first laser range finder 12 is within a preset standard range, and if not, controls the first driving member 14 to drive the movement of the first connecting member 102, and The distance between the display device 10 and the earphone device 20 is changed until the distance detected by the first laser range finder 12 is within the preset standard range.
- the distance is measured by the laser range finder 12, and the first driving member 14 is controlled to be movably connected between the display device 10 and the earphone device 20 through the first controller 13.
- the first connector 102 moves and can be automatically adjusted to a preferred wearing position.
- the display assembly 11 includes a microdisplay 111, an optical module 112, a reflective sheet 113, and a viewing window 114 for viewing by a user.
- the display screen generated by the microdisplay 111 is transmitted to the reflective sheet 113 through the optical module 112, and is reflected by the reflective sheet 113 and projected through the viewing window 114 to the user's eyes 200.
- the display unit 11 includes two micro-displays 111, an optical module 112, and a reflection sheet 113 for projecting the display screen to the left and right eyes 200 of the user.
- the number of viewing windows 114 is also two for the user's two eyes 200 to view the display screen, respectively.
- the number of the microdisplays 111 may be one.
- the display component 11 further includes a beam splitter for dividing the display screen of the micro display 111 into two and passing through the corresponding optical module 112 and reflecting.
- the slices 113 are projected to the eyes of the user, respectively.
- the first laser range finder 12 is located behind one of the mirrors 113 and is opposite the center of the viewing window 114.
- the first laser range finder 12 is for emitting laser light toward a center position of the viewing window 114. Wherein, when the user wears the head mounted display device 100, the user's eyes 200 face the viewing window 114.
- the first laser range finder 12 is configured to receive the laser light reflected by the user's eyes 200, and calculate the distance from the eye 200 according to the time interval t of the emitted laser light and the laser light reflected from the user's eye 200 and the propagation speed v of the laser light. d.
- the first laser range finder 12 is a phase laser range finder based on the phase method laser ranging technology.
- the first laser range finder 12 includes a laser 121, a modulator 122, a phase detector 123, and a digital processing module 124.
- the laser 121 is for emitting laser light
- the modulator 122 is for amplitude modulating the laser light into sinusoidal modulated light and transmitting it to a target object, that is, the user's eye 200.
- the phase detector 123 is configured to receive sinusoidal modulated light reflected from the target object, and measure a phase difference generated between the sinusoidal modulated light and the user's eye 200 through the first laser range finder 12.
- the digital processing module 124 is configured to calculate a time interval t between the time at which the laser is emitted and the time at which the laser is received, based on the frequency and phase difference of the sinusoidal modulated light.
- the frequency of the sinusoidal modulated light is f
- the phase difference is ⁇
- the time interval t ⁇ /(2 ⁇ *f).
- the accuracy can be up to the millimeter level.
- the number of the first connecting members 102 is two, and the two ends of the display device 10 and the two ends of the earphone device 20 are respectively connected, and the first controller 13 determines that the first laser range finder 12 detects
- the first driving member 14 is controlled to drive the two first connecting members 102 to move simultaneously, while changing the distance between the two ends of the display device 10 and the earphone device 20 until the distance The distance detected by the first laser range finder 12 is within the preset standard range.
- the first controller 13 may calculate a difference between the standard values of the distances from the preset standard range according to the distance d calculated by the digital processing module 124, and control the first driving component 14 to drive the two first connections.
- the piece 106 is simultaneously moved to a position where the distance is a standard value.
- the distance between the display device 10 and the earphone device 20 is made within the preset standard range.
- the first driving component 14 is controlled to drive the first connecting member 102 toward the reduced display device 10.
- the two ends move in the direction of the distance between the earphone device 20.
- the first driving member 14 is controlled to drive the first connecting member 102 toward the two ends of the display device 10. Distance from the earphone device 20 The direction of movement.
- the first driving member 14 is a motor, and the first connecting member 102 can be two intermeshing racks, and the unengaged ends are respectively fixed on the display device 10 and the earphone device 20.
- the number of the first driving members 14 may be one, and is connected to the two first connecting members 102 disposed at both ends of the display device 10 and the earphone device 20, and drives the two first connecting members 102 to simultaneously move.
- the number of the first driving members 14 may also be two for driving one first connecting member 102, and the direction and the step of driving are guaranteed under the control of the first controller 13. Consistent.
- the preset standard range is 18-20 mm.
- the first laser range finder 12 can be disposed on the front frame of the display device 10, and the preset standard range is the optimal distance for the user experience obtained by testing and experimenting in advance.
- the laser light emitted by the first laser range finder 12 is an infrared laser.
- the reflective sheet 113 is adjacent to the side of the display window 114.
- the visible light broadband is fully inverted, and the near-infrared is highly transparent, and the incident angle is 45 degrees.
- the reflective sheet 113 is highly transparent to the visible light and near-infrared broadband on the surface S2 of the display window 114, and has an incident angle of 45 degrees.
- the present invention is not limited thereto, and based on the schematic principle of the above-described embodiments of the present invention, different angles and transformation of optical paths can be realized according to optical design.
- the first laser range finder 12 also receives laser light after emitting laser light.
- the display device 10 further includes an image sensor 15 for receiving the first laser range finder. 12 received infrared laser and imaged.
- the first controller 13 is further configured to compare the image acquired by the image sensor 15 with the preset image to determine whether the user blinks or closes the eye.
- the preset image includes a blink image and a closed eye image.
- the preset standard range is the distance between the first laser range finder 12 and the pupil of the user's eyes 200.
- the earphone device 20 includes a second laser range finder 24, a second controller 25, and a second driving member 26 in addition to the endless belt 21, the earpiece 22, and the second connecting member 23.
- the second laser range finder 24 is disposed on the inner side surface of the endless belt 21.
- the second laser range finder 24 faces the top of the user's head.
- the second laser range finder 24 is used to measure the distance d2 between the endless belt 21 and the top of the user's head.
- the second laser range finder 24 emits laser light and receives the laser light reflected from the top of the user's head, and according to the time interval t at which the laser light is emitted and the laser light reflected from the user's head is received, The speed v of the laser calculates the distance from the top of the head.
- the second laser range finder 24 is also a phase laser range finder based on the phase method laser ranging technique, and the calculation of the time interval t is the same as that of the first laser range finder 12.
- the second controller 25 is connected to the second laser range finder 24 and the second driving member 26, and the second driving member 26 is also connected to the second connecting member 23.
- the second controller 25 is configured to determine whether the distance d2 measured by the second laser range finder 24 is less than or equal to a preset value (for example, 2 mm), and if it is greater than the preset value, control the second driving member 26 Driving the second connecting member 23 shortens the distance between the endless belt 21 and the earpiece 22, so that the endless belt 21 moves toward the top of the user's head until the distance d2 measured by the second laser range finder 24 is less than or equal to the preset value.
- a preset value for example, 2 mm
- the second controller 25 may calculate the difference from the preset value according to the distance d2 measured by the second laser range finder 24, and control the second driving member 26 to drive the two second connectors 23. Simultaneously move to a position where the distance is a standard value.
- the second controller 25 first controls the second driving member 26 to drive the second connecting member 23 to increase the distance between the endless belt 21 and the earpiece 22 to the maximum, and then determines the second laser range finder 24 Whether the measured distance d2 is less than or equal to the preset value and is gradually reduced until the distance d2 measured by the second laser range finder 24 is less than or equal to the preset value.
- the second laser range finder 24 detects the distance between the endless belt 21 and the top of the user's head, and automatically adjusts the distance of the endless belt 21 to less than or equal to the preset value, so that the earphone device 20 and the user's head are better. Fits for added comfort.
- the number of the earpieces 22 is two, which are respectively disposed at two ends of the endless belt 21, and the second connecting member
- the number of 23 is also two, and the two ends of the endless belt 21 and the corresponding earpiece 22 are respectively connected.
- the number of the second driving members 26 may be one or two. When one is used, the one second driving member 26 is simultaneously connected to the two second connecting members 23 and drives the two second connecting members 23. When the number of the second driving members 26 is two, the two second driving members 26 are respectively connected to a second connecting member 23, and simultaneously drive the two second connecting members under the control of the second controller 25. 23 moves in the same direction in the same direction in the radial direction.
- Each of the second connecting members 23 can also be two intermeshing racks, and the unengaged ends are respectively fixed to one end of the earpiece 22 and the endless belt 21.
- the first controller 13 in the display device 10 and the second controller 25 in the earphone device 20 may be the same controller or two controllers independent of each other.
- the first driving member 14 and the second driving member 26 may be the same driving member or two independent driving members.
- the first controller 13 and the second controller 25 may be a central processing unit, a microcontroller, a single chip microcomputer, a digital signal processor, or the like.
- the digital processing module 124 can be a digital signal processor, a single chip microcomputer, or the like.
- FIG. 6 is a flowchart of a method for adjusting a head mounted display device according to an embodiment of the invention. This method is used to control a head mounted display device. The order of the steps included in the method is limited to the following steps, and the replacement of any step is the protection scope of the present invention. The method comprises the following steps:
- the first laser range finder 12 amplitude modulates the laser light into sinusoidal modulated light and transmits it to the user's eye 200, and measures the phase difference generated by the returned sinusoidal modulated light, and then according to the frequency and phase difference of the sinusoidal modulated light. Calculate the time interval t between the time at which the laser is emitted and the time at which the laser is received.
- the first controller 13 determines whether the distance detected by the first laser range finder 12 is within a preset standard range (S603). If yes, step S607 is performed, and if not, step S605 is performed.
- the distance between the endless belt 21 of the earphone device 20 and the top of the user's head is measured by the second laser range finder 24 (S607).
- the second laser range finder 24 emits laser light and receives the laser light reflected from the user's eye 200, and calculates the distance from the head according to the time interval t at which the laser light is emitted and the laser light reflected from the top of the user and the speed v of the laser light are received.
- the second controller 25 determines whether the distance measured by the second laser range finder 24 is less than or equal to a preset value (S609). If yes, the process ends, and if no, step S61 is performed.
- the control driving member drives the second connecting member to shorten the distance between the endless belt and the earpiece such that the endless belt moves toward the top of the user's head until the distance measured by the second laser range finder is less than or equal to the preset value (S611).
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Abstract
一种可自动调节的头戴式显示设备（100），包括显示装置（10）、耳机装置（20）以及第一连接件（102），显示装置（10）与耳机装置（20）通过第一连接件（102）可活动地连接，显示装置（10）包括显示组件（11）、第一激光测距仪（12）、第一驱动件（14）及第一控制器（13）。第一激光测距仪（12）透过显示组件（11）去侦测与用户眼睛（200）的距离。第一控制器（13）判断该第一激光测距仪（12）侦测的距离是否在一预设标准范围之内，如果否，则控制该第一驱动件（14）驱动该第一连接件（102）运动而改变显示装置（10）与耳机装置（20）之间的距离，使得显示装置（10）与用户眼睛（200）之间的距离在该预设标准范围之内。还提供一种调节方法。该头戴式显示设备（100）及其调节方法，可自动根据佩戴者的头型等调节佩戴位置。
Description
本发明涉及显示设备，尤其涉及一种头戴式的显示设备及其调节的方法。
目前的头戴式显示设备，通常包括显示装置和耳机装置，显示装置和耳机装置通过连接机构连接，例如插拔连接。耳机装置包括环带和位于环带两端的听筒，听筒与环带之间也通过相应的连接机构连接。其中，由于佩戴者脸型，头型等各方面存在个体差异，所以不同的佩戴者一般需要进行调节。用户可通过调节显示装置和耳机装置之间的连接机构而调整显示装置和耳机装置之间的距离，而调整观看画面的显示效果。用户也可调整环带和听筒之间的连接机构，调整环带和听筒的松紧，而增加佩戴的舒适度。然而，目前的方式均由用户手动去调节相应的连接机构，调节费时费力，且不易调整至正确或合适的配戴方式。非正确的配戴会导致视场看不全，显示图像变形，图像不清晰，压迫，眩晕等不舒适感，甚至会损伤视力。
发明内容
本发明实施例公开一种头戴式显示设备及其调节方法，可自动将头戴式显示设备调整至适合穿戴者的较佳穿戴状态。
本发明实施例公开的一种可自动调节的头戴式显示设备，包括显示装置、耳机装置以及第一连接件，显示装置与耳机装置通过第一连接件可活动地连接。该显示装置包括显示组件、第一激光测距仪、第一驱动件及第一控制器。该第一激光测距仪透过显示组件去侦测与用户眼睛的距离。该第一驱动件与所述第一连接件连接。该第一控制器判断该第一激光测距仪侦测的距离是否在一预设标准范围之内，如果不是，则控制该第一驱动件驱动该第一连接件运动而改变显示装置与耳机装置之间的距离，使得显示装置与耳机装置之间的距离在该预设标准范围之内。
本发明实施例公开的一种头戴式显示设备的调节方法，用于调节头戴式显
示设备，该方法包括步骤：通过设置在头戴式显示设备的显示装置上的第一激光测距仪去侦测其与用户眼睛的距离；判断该第一激光测距仪侦测的距离是否在一预设标准范围内；以及如果不在预设标准范围内，控制第一驱动件驱动第一连接件运动而改变显示装置与耳机装置之间的距离，使得显示装置与耳机装置之间的距离在所述预设标准范围之内。
本发明的头戴式显示设备及控制方法，可自动将头戴式显示设备调整至适合穿戴者的较佳穿戴状态。
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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明显变形方式。
图1为本发明一实施例中的头戴式显示设备的立体示意图；
图2为本发明一实施例中的头戴式显示设备的显示装置的功能模块图；
图3为本发明一实施例中的头戴式显示设备的显示装置的光学结构图；
图4为本发明一实施例中的头戴式显示设备的激光测距仪的结构示意图；
图5为本发明一实施例中的头戴式显示设备的耳机装置的功能模块图；
图6为本发明一实施例中的头戴式显示设备的调节方法的流程图。
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，都属于本发明保护的范围。
请参阅图1，为本发明一实施例中的头戴式显示设备100的立体示意图。该头戴式显示设备100包括显示装置10及耳机装置20。显示装置10与耳机
装置20通过第一连接件102可活动地连接。耳机装置20包括环带21、位于环带21两端的听筒22以及第二连接件23，环带21与两端的听筒22通过该第二连接件23可活动地连接。
请一并参阅图2，为本发明一实施例中的显示装置10的结构框图。该显示装置20包括显示组件11、第一激光测距仪12、第一控制器13以及第一驱动件14。该第一激光测距仪12透过显示组件11去侦测与用户眼睛200的距离。该第一控制器13判断该第一激光测距仪12侦测的距离是否在一预设标准范围之内，如果不是，则控制该第一驱动件14驱动该第一连接件102运动，而改变显示装置10与耳机装置20之间的距离，直到该第一激光测距仪12侦测的距离在该预设标准范围之内为止。从而，当用户戴上该头戴式显示设备100后，通过激光测距仪12测距，并通过第一控制器13控制第一驱动件14驱动活动连接于显示装置10与耳机装置20之间的第一连接件102运动，可以自动调整到一较佳的佩戴位置。
请一并参阅图3，为显示组件11的光学结构图。该显示组件11包括微型显示器111、光学模组112、反射片113以及用于用户观看的观看视窗114。该微型显示器111产生的显示画面经过光学模组112传输至反射片113，并经过反射片113反射并通过观看视窗114投射到用户的眼睛200。其中，该显示组件11包括的微型显示器111、光学模组112、反射片113的个数为两个，分别用于投射显示画面至用户的左右两只眼睛200中。该观看视窗114的数量也为两个，用于分别供用户的两只眼睛200观看显示画面。在另一实施方式中，该微型显示器111的个数可为一个，该显示组件11还包括一分光镜，用于将微型显示器111的显示画面分成两个并通过对应的光学模组112及反射片113分别投射至用户的双眼。
该第一激光测距仪12位于其中一个反射镜113后且正对观看视窗114的中心。该第一激光测距仪12用于朝观看视窗114的中心位置发射激光。其中，当用户佩戴该头戴式显示设备100时，用户眼睛200正对观看视窗114。
该第一激光测距仪12用于接收用户眼睛200反射回来的激光，并根据发射激光以及接收到用户眼睛200反射回来的激光的时间间隔t以及激光的传播速度v计算出与眼睛200的距离d。其中，该第一激光测距仪12根据计算公
式：d＝v*t/2计算出距离d，v为激光的速度，一般为光速3*108m/s，t为第一激光测距仪12发射激光与接收激光的时间间隔。
请一并参阅图4，为第一激光测距仪12的电路结构示意图。在本实施例中，该第一激光测距仪12为基于相位法激光测距技术的相位式激光测距仪。该第一激光测距仪12包括激光器121、调制器122、鉴相器123及数字处理模块124。
该激光器121用于发射激光，该调制器122用于对该激光进行幅度调制成正弦调制光并发送给目标物体，即用户的眼睛200。该鉴相器123用于接收目标物体反射回来的正弦调制光，并测量正弦调制光经过第一激光测距仪12与用户眼睛200之间所产生的相位差。该数字处理模块124用于根据正弦调制光的频率及相位差，计算出发射激光的时刻与接收到激光的时刻之间的时间间隔t。其中，设正弦调制光的频率为f，相位差为Δφ，则时间间隔t＝Δφ/(2π*f)。该数字处理模块124在计算出时间间隔t后，根据公式：d＝v*t/2计算出距离d。本发明中，由于第一激光测距仪12采用相位法激光测距技术，精度可以达到毫米级。
在本实施例中，该第一连接件102的个数为两个，分别连接显示装置10的两头与耳机装置20的两头，该第一控制器13判断该第一激光测距仪12侦测的距离d不在预设标准范围之内时，则控制该第一驱动件14驱动该两个第一连接件102同时运动，而同时改变显示装置10两头与耳机装置20之间的距离，直到该第一激光测距仪12侦测的距离在该预设标准范围之内为止。其他实施方式中，也可以为第一控制器13根据数字处理模块124计算的距离d，计算出与预设标准范围的距离标准值之差，控制第一驱动件14驱动该两个第一连接件106同时运动至距离为标准值的位置。使得显示装置10与耳机装置20之间的距离在该预设标准范围之内。
其中，该第一控制器13判断该第一激光测距仪12侦测的距离d大于预设标准范围的最大值时，控制该第一驱动件14驱动第一连接件102朝缩小显示装置10两头与耳机装置20之间距离的方向运动。该第一控制器13判断该第一激光测距仪12侦测的距离d小于预设标准范围的最小值时，控制该第一驱动件14驱动第一连接件102朝增大显示装置10两头与耳机装置20之间距离
的方向运动。
其中，该第一驱动件14为电机，该第一连接件102可为两个相互啮合的齿条，且未啮合的一端分别固定在显示装置10与耳机装置20上。其中，该第一驱动件14的个数可为一个，同时与设置在显示装置10与耳机装置20两头的两个第一连接件102连接，并驱动该两个第一连接件102同时运动。在另一实施例中，该第一驱动件14的个数也可为两个，分别用于驱动一个第一连接件102，且在第一控制器13的控制下保证驱动的方向和步径一致。
在一实施例中，该预设标准范围为18-20毫米。该第一激光测距仪12可设置在显示装置10的前面框上，且该预设标准范围为预先通过测试和实验得出的用户体验最佳的距离。
在本实施例中，该第一激光测距仪12发出的激光为红外激光。反射片113靠近显示视窗114的一面S1镀可见光宽带全反，近红外高透，入射角度为45度。该反射片113远离显示视窗114的面S2上镀可见光和近红外宽带高透，入射角度为45度。但本发明并不限于此，基于本发明上述实施例的示意原理，可以根据光学设计实现不同角度以及光路的变换。
如前所述，该第一激光测距仪12发出激光后还接收激光，如图2所示，该显示装置10还包括一图像传感器15，该图像传感器15用于接收第一激光测距仪12接收的红外激光并成像。
该第一控制器13还用于根据图像传感器15获取的图像与预设图像进行对比，判断用户是否睁眼或闭眼。其中，该预设图像包括睁眼图像和闭眼图像，当第一控制器13判断图像传感器15获取的图像与睁眼图像符合时，确定用户此时睁眼，当判断图像传感器15获取的图像与睁眼图像符合时，确定用户此时闭眼。
其中，该预设标准范围最佳的为第一激光测距仪12与用户眼睛200的瞳孔的距离，当用户闭上眼睛时，测出的距离就会多一个眼皮的厚度D。因此，当第一控制器13判断用户此时闭眼时，还对该第一激光测距仪12侦测的距离d进行矫正得出矫正后的距离d1，其中，d1＝d+D。即，实际上此时第一激光测距仪12与用户眼睛200的瞳孔的距离应等于第一激光测距仪12侦测的到眼皮的距离d加上眼皮的厚度D。然后，第一控制器13再判断矫正后的距离d1
是否在该预设标准范围内，使得用户睁开眼睛与该第一激光测距仪12的距离在该预设标准范围内。进一步提高了显示效果。
请一并参阅图5，为耳机装置20的结构框图。该耳机装置20除包括环带21、听筒22、第二连接件23外，还包括第二激光测距仪24、第二控制器25以及第二驱动件26。
如图1所示，该第二激光测距仪24设置于环带21的内侧表面，当用户佩戴该头戴式显示装置100时，该第二激光测距仪24正对用户的头顶。该第二激光测距仪24用于测量环带21与用户头顶之间的距离d2。与第一激光测距仪12的测量过程一样，第二激光测距仪24发射激光，并接收用户头顶反射回来的激光，并根据发射激光以及接收到用户头顶反射回来的激光的时间间隔t以及激光的速度v计算出与头顶的距离。第二激光测距仪24也为基于相位法激光测距技术的相位式激光测距仪，对时间间隔t的计算与第一激光测距仪12相同。
该第二控制器25与该第二激光测距仪24以及该第二驱动件26连接，该第二驱动件26还与第二连接件23连接。该第二控制器25用于判断该第二激光测距仪24测量的距离d2是否小于或等于一预设值(例如2毫米)，如果大于该预设值，则控制该第二驱动件26驱动该第二连接件23缩短环带21与听筒22的距离，使得环带21向靠近用户头顶的方向运动，直到第二激光测距仪24测量的距离d2小于或等于该预设值。其他实施方式中，也可以为第二控制器25根据第二激光测距仪24测量的距离d2，计算出与预设值之差，控制第二驱动件26驱动该两个第二连接件23同时运动至距离为标准值的位置。
在一实施例中，该第二控制器25首先控制第二驱动件26驱动该第二连接件23增大环带21与听筒22的距离至最大，然后再判断该第二激光测距仪24测量的距离d2是否小于或等于该预设值，并进行逐渐缩小直到第二激光测距仪24测量的距离d2小于或等于该预设值。
从而，通过该第二激光测距仪24侦测环带21与用户头顶的距离，并自动调节环带21的距离至小于或等于该预设值，使得耳机装置20与用户头部较好的贴合，增加了佩戴的舒适度。
其中，听筒22的个数为两个，分别设置于环带21的两端，该第二连接件
23的个数也为两个，分别连接环带21的两端与对应的听筒22。该第二驱动件26的个数可为一个或两个，当为一个时，该一个第二驱动件26同时与两个第二连接件23连接，并驱动该两个第二连接件23。当该第二驱动件26的个数为两个时，两个第二驱动件26分别与一第二连接件23连接，并在第二控制器25的控制下同时驱动两个第二连接件23以相同的步径向相同的方向运动。
其中，每一第二连接件23也可为两个相互啮合的齿条，且未啮合的一端分别固定在一听筒22与环带21的一端上。
其中，显示装置10中的第一控制器13与耳机装置20中的第二控制器25可为同一个控制器或为相互独立的两个控制器。该第一驱动件14与第二驱动件26可为同一个驱动件也可为两个独立的驱动件。第一控制器13与第二控制器25可为中央处理器、微控制器、单片机、数字信号处理器等。该数字处理模块124可为数字信号处理器、单片机等。
请参阅图6，为本发明一实施例中的头戴式显示设备的调节方法的流程图。该方法用于对头戴式显示设备进行控制。其中，该方法包括的步骤的顺序并限于如下的步骤，任意步骤的替换都为本发明的保护范围。该方法包括如下步骤：
通过设置在显示装置上的第一激光测距仪12去侦测其与用户眼睛200的距离(S601)。具体的，第一激光测距仪12发射激光，并接收用户眼睛200反射回来的激光，并根据发射激光以及接收到用户眼睛200反射回来的激光的时间间隔t以及激光的速度v计算出与眼睛200的距离d。其中，该第一激光测距仪12根据计算公式：d＝v*t/2计算出距离d，v为光速3*108，t为第一激光测距仪12发射激光与接收激光的时间间隔。其中，第一激光测距仪12对该激光进行幅度调制成正弦调制光并发送给用户的眼睛200，并测量返回的正弦调制光所产生的相位差，然后根据正弦调制光的频率及相位差，计算出发射激光的时刻与接收到激光的时刻之间的时间间隔t。其中，该第一激光测距仪12根据计算公式：t＝Δφ/(2π*f)计算时间间隔t，f为正弦调制光的频率，Δφ为相位差。
第一控制器13判断该第一激光测距仪12侦测的距离是否在一预设标准范围(S603)。如果是，则执行步骤S607，如果不是则执行步骤S605。
控制第一驱动件14驱动该第一连接件102运动，而改变显示装置10与耳
机装置20之间的距离，直到该第一激光测距仪12侦测的距离在该预设标准范围之内为止(S605)。
通过第二激光测距仪24测量耳机装置20的环带21与用户头顶之间的距离(S607)。第二激光测距仪24发射激光，并接收用户眼睛200反射回来的激光，并根据发射激光以及接收到用户头顶反射回来的激光的时间间隔t以及激光的速度v计算出与头顶的距离。
第二控制器25判断该第二激光测距仪24测量的距离是否小于或等于一预设值(S609)。如果是，则流程结束，如果否，则执行步骤S61。
控制驱动件驱动该第二连接件缩短环带与听筒的距离，使得环带向靠近用户头顶的方向运动，直到第二激光测距仪测量的距离小于或等于该预设值(S611)。
以上所述是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。
Claims (16)
- 一种可自动调节的头戴式显示设备，包括显示装置、耳机装置以及第一连接件，显示装置与耳机装置通过第一连接件可活动地连接，所述显示装置包括显示组件，其特征在于，所述显示装置还包括：第一激光测距仪，透过显示组件去侦测与用户眼睛的距离；第一驱动件，与所述第一连接件连接；以及第一控制器，判断该第一激光测距仪侦测的距离是否在一预设标准范围之内，如果不是，则控制该第一驱动件驱动该第一连接件运动而改变显示装置与耳机装置之间的距离，使得显示装置与耳机装置之间的距离在该预设标准范围之内。
- 如权利要求1所述的头戴式显示设备，其特征在于，所述第一激光测距仪用于发射激光至用户眼睛，并接收用户眼睛反射回来的激光，并根据发送激光以及接收到用户眼睛反射回来的激光的时间间隔以及激光的速度计算出与用户眼睛的距离。
- 如权利要求2所述的头戴式显示设备，其特征在于，所述第一激光测距仪包括激光器、调制器、鉴相器及数字处理模块，所述激光器用于发射激光，该调制器用于对该激光进行幅度调制成正弦调制光并发送给用户眼睛，所述鉴相器用于测量接收到的正弦调制光经过第一激光测距仪与用户眼睛之间距离所产生的相位差，所述数字处理模块用于根据正弦调制光的频率及相位差，计算出发射激光的时刻与接收到激光的时刻之间的时间间隔。
- 如权利要求3所述的头戴式显示设备，其特征在于，所述数字处理模块根据公式：t＝Δφ/(2π*f)计算发射激光的时刻与接收到激光的时刻之间的时间间隔t，其中，f为所述正弦调制光的频率，Δφ为相位差。
- 如权利要求2所述的头戴式显示设备，其特征在于，所述第一激光测距仪发射的激光为红外激光，所述显示装置还包括一图像传感器，所述图像传感器用于接收第一激光测距仪接收的红外激光并成像，所述第一控制器还用于根据图像传感器获取的图像与预设图像进行对比，判断用户是否睁眼或闭眼，当第一控制器判断用户此时闭眼时，还对该第一激光测距仪侦测的距离d进行 矫正得出矫正后的距离d1，其中，d1＝d+D，D为眼皮的厚度，第一控制器再判断矫正后的距离d1是否在该预设标准范围内。
- 如权利要求1所述的头戴式显示设备，其特征在于，所述显示组件包括微型显示器、光学模组、反射片以及用于用户观看的观看视窗，所述微型显示器产生的显示画面经过光学模组传输至反射片，并经过反射片反射至观看视窗，然后再到用户的眼睛，所述第一激光测距仪位于反射镜后且正对观看视窗的中心。
- 如权利要求6所述的头戴式显示设备，其特征在于，所述反射片靠近显示视窗的第一面镀可见光宽带全反，近红外高透，光入射角度为45度，所述反射片远离显示视窗的第二面上镀可见光和近红外宽带高透，入射角度为45度。
- 如权利要求1所述的头戴式显示设备，其特征在于，所述第一驱动件为电机，所述第一连接件包括两个相互啮合的齿条，且所述两个齿条未啮合的一端分别固定在显示装置与耳机装置上。
- 如权利要求1所述的头戴式显示设备，所述耳机装置包括环带、听筒、第二连接件、第二激光测距仪、第二控制器以及第二驱动件，所述第二激光测距仪设置于环带的内侧，用于测量环带与用户头顶之间的距离，所述第二控制器与所述第二激光测距仪以及所述第二驱动件连接，所述第二驱动件还与第二连接件连接；所述第二控制器判断该第二激光测距仪测量的距离是否小于或等于一预设值，如果大于该预设值，则控制所述第二驱动件驱动所述第二连接件缩短环带与听筒的距离，使得环带向靠近用户头顶的方向运动至环带至用户头顶距离等于所述预设值。
- 所述第二连接件包括两个相互啮合的齿条，所述两个齿条未啮合的一端分别固定在一听筒与环带的一端，所述第二驱动件为电机。
- 一种头戴式显示设备的调节方法，其特征在于，所述方法包括步骤：通过设置在头戴式显示设备的显示装置上的第一激光测距仪去侦测其与用户眼睛的距离；判断该第一激光测距仪侦测的距离是否在一预设标准范围内；以及如果不在预设标准范围内，控制第一驱动件驱动第一连接件运动而改变显 示装置与耳机装置之间的距离，使得显示装置与耳机装置之间的距离在所述预设标准范围之内。
- 如权利要求11所述的调节方法，其特征在于，所述方法还包括步骤：通过第二激光测距仪测量耳机装置的环带与用户头顶之间的距离；判断该第二激光测距仪测量的距离是否小于或等于一预设值；以及如果不小于或等于所述预设值，控制第二驱动件驱动该第二连接件缩短环带与听筒的距离，使得环带向靠近用户头顶的方向运动，直到第二激光测距仪至用户头顶的距离等于该预设值。
- 如权利要求11所述的调节方法，其特征在于，所述步骤“通过设置在头戴式显示设备的显示装置上的第一激光测距仪去侦测其与用户眼睛的距离”包括：第一激光测距仪发射激光，并接收用户眼睛反射回来的激光，并确定发射激光以及接收到用户眼睛反射回来的激光的时间间隔；以及根据发射激光以及接收到用户眼睛反射回来的激光的时间间隔以及激光的速度计算出与眼睛的距离。
- 如权利要求13所述的调节方法，其特征在于，所述步骤“确定发射激光以及接收到用户眼睛反射回来的激光的时间间隔”包括：对该激光进行幅度调制成正弦调制光并发送给用户的眼睛；测量返回的正弦调制光所产生的相位差；以及根据正弦调制光的频率及相位差，计算出发射激光的时刻与接收到激光的时刻之间的时间间隔。
- 如权利要求14所述的调节方法，其特征在于，所述步骤“根据正弦调制光的频率及相位差，计算出发射激光的时刻与接收到激光的时刻之间的时间间隔”包括：根据计算公式：t＝Δφ/(2π*f)计算时间间隔t，其中，f为正弦调制光的频率，Δφ为相位差。
- 如权利要求12所述的调节方法，其特征在于，所述步骤“通过第二激光测距仪测量耳机装置的环带与用户头顶之间的距离”包括：所述第二激光测距仪发射激光，并接收用户头顶反射回来的激光，并根据 发射激光以及接收到用户头顶反射回来的激光的时间间隔以及激光的速度计算出与头顶的距离。
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| PCT/CN2015/099980 WO2017113245A1 (zh) | 2015-12-30 | 2015-12-30 | 可自动调节的头戴式显示设备及其调节方法 |
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| CN117470508A (zh) * | 2023-11-02 | 2024-01-30 | 芜湖汽车前瞻技术研究院有限公司 | 标定装置 |
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| US5815126A (en) * | 1993-10-22 | 1998-09-29 | Kopin Corporation | Monocular portable communication and display system |
| CN102621556A (zh) * | 2012-04-24 | 2012-08-01 | 北京理工大学 | 一种调频测相激光测距方法 |
| CN103323949A (zh) * | 2012-03-22 | 2013-09-25 | 索尼公司 | 头戴式显示器 |
| CN103487938A (zh) * | 2013-08-28 | 2014-01-01 | 成都理想境界科技有限公司 | 头戴显示装置 |
| US20150035744A1 (en) * | 2013-07-30 | 2015-02-05 | Steve Robbins | Near-eye optic positioning in display devices |
| CN104503086A (zh) * | 2014-12-31 | 2015-04-08 | 青岛歌尔声学科技有限公司 | 可调节式头戴显示器 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815126A (en) * | 1993-10-22 | 1998-09-29 | Kopin Corporation | Monocular portable communication and display system |
| CN103323949A (zh) * | 2012-03-22 | 2013-09-25 | 索尼公司 | 头戴式显示器 |
| CN102621556A (zh) * | 2012-04-24 | 2012-08-01 | 北京理工大学 | 一种调频测相激光测距方法 |
| US20150035744A1 (en) * | 2013-07-30 | 2015-02-05 | Steve Robbins | Near-eye optic positioning in display devices |
| CN103487938A (zh) * | 2013-08-28 | 2014-01-01 | 成都理想境界科技有限公司 | 头戴显示装置 |
| CN104503086A (zh) * | 2014-12-31 | 2015-04-08 | 青岛歌尔声学科技有限公司 | 可调节式头戴显示器 |
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| CN117470508A (zh) * | 2023-11-02 | 2024-01-30 | 芜湖汽车前瞻技术研究院有限公司 | 标定装置 |
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| CN107250894A (zh) | 2017-10-13 |
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