WO2017107182A1

WO2017107182A1 - Head-mounted display device

Info

Publication number: WO2017107182A1
Application number: PCT/CN2015/098909
Authority: WO
Inventors: 徐培辰
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2017-06-29
Also published as: CN107407960A

Abstract

A head-mounted display device (100), comprising a main body (20), a display module (60) arranged in the main body (20), and a control module (50) electrically connected to the display module (60). The head-mounted display device (100) further comprises an external image output apparatus electrically connected to the control module (50), wherein the control module (50) controls displaying a video signal inward by the display module (60) so as to provide an inward display mode, and controls displaying a video signal outward by the external image output apparatus so as to provide an outward display mode. The head-mounted display device (100) is provided with the external image output apparatus, so that when a wearer needs to operate a physical keyboard electrically connected to the head-mounted display device (100) while watching a display content, the outward display mode can be switched to, namely, displaying the video signal via the external image output apparatus.

Description

Head mounted display device

Technical field

The present invention relates to the field of head-mounted display devices, and in particular, to a head-mounted display device.

Background technique

With the development of technology, head-mounted display devices have gradually become civilian, providing a high-quality visual experience for more and more people. However, when the head-mounted display device is worn, the wearer cannot see and operate the physical keyboard, and after removing the head-mounted display device, the video cannot be continuously watched. As a result, the wearer cannot simultaneously take care of both video viewing and physical keyboard operations.

Summary of the invention

Embodiments of the present invention disclose a head mounted display device that allows a wearer to operate when the device is removed.

The head-mounted display device disclosed in the embodiment of the invention comprises a body, a display module disposed in the body, and a control module electrically connected to the display module. The head mounted display device further includes an external image output device electrically connected to the control module, the control module controlling the display module to display a video signal inward to provide an in-display mode, and controlling the external image output The device displays the video signal outward to provide an external display mode.

The head mounted display device of the present invention is provided with an external image output device, such that when the wearer needs to operate the physical keyboard electrically connected to the head mounted display device while viewing the display content, the external display mode can be switched, that is, The external image output device can display the video signal.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a perspective view of a head mounted display device in a first embodiment of the present disclosure;

2 is a schematic block diagram of the head mounted display device of FIG. 1;

3 is a schematic diagram of an optical path of the head mounted display device in the in-display mode of FIG.

4 is a schematic diagram of an optical path of the head mounted display device of FIG. 1 in an external display mode;

FIG. 5 is a schematic diagram of a head mounted display device according to a second embodiment of the present disclosure; FIG.

FIG. 6 is a schematic diagram of a head mounted display device according to a third embodiment of the present disclosure; FIG.

7 is a schematic block diagram of the head mounted display device of FIG. 6;

FIG. 8 is a schematic diagram of a head mounted display device according to a fourth embodiment of the present disclosure; FIG.

9 is a schematic diagram of an optical path of the head mounted display device of FIG. 8 in an in-line display mode;

10 is a schematic diagram of an optical path of the head mounted display device of FIG. 8 in an external display mode;

Figure 11 is a block diagram of the head mounted display device of Figure 8;

FIG. 12 is a schematic structural diagram of a head-mounted display device according to still another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 and FIG. 2, a head mounted display device 100 in an embodiment of the present disclosure includes a body 20, a control module 50 disposed in the body 20, two display modules 60, and an external image output device. The external image output device in this embodiment is the projector 70. The control module 50 is electrically connected to the two display modules 60 and the projector 70. The control module 50 controls the two display modules 60 to display a video signal and project its display light source to the wearer's eye in a direction to view the inner exit light source to provide an in-line display mode, and control the projector 70 to display the video signal and project the display content. The external display mode is implemented to the imaging medium 200 (see FIG. 4), thereby providing switching between the in-display mode and the external display mode. As such, when the wearer needs to operate the physical keyboard electrically connected to the head mounted display device 100 while viewing the display content, the head mounted display device 100 is removed and then switched to the external display mode. Just fine. The light source of the display module 60 provides a light source for displaying content on the display surface thereof, and the display content can be understood as an image.

The head mounted display device 100 further includes a bracket 10 for fixing the body 20, an earphone 30 rotatably coupled to the bracket 10, a headband 32 mounted on the earphone 30, a speaker 40 disposed in the body 20, and a speaker Switching switch 52 on body 10. The changeover switch 52 is electrically connected to the control module 50. The switch 52 is configured to receive an operation of the wearer to switch the display mode and generate a switching signal to the control module 50. The control module 50 implements switching between the in-display mode and the external display mode in response to the switching signal. For example, when the wearer needs to operate a physical keyboard (eg, for text input), the head mounted display device 10 can be removed and the toggle switch 52 can be depressed, at which point the control module 50 activates the projector 70 and controls the projector 70 to display the video. The signal is thereby committed to the display content to the imaging medium 200. In this way, when the physical keyboard is operated, the display content can also be viewed. Preferably, to reduce power consumption, the control module 50 turns off the display module 60 after switching to the external display mode.

In the present embodiment, the changeover switch 52 is a push button provided on the body 20. The changeover switch 52 can also be disposed at any position of the head mounted display device 100, such as the headband 32 or the earphone 30. In other embodiments, the toggle switch 52 can also be a touchpad or a module with voice recognition functionality. The wearer can switch between the in-display mode and the external display mode by a touch operation or by inputting a voice password such as "inside display" or "outside display".

Control module 50 is also electrically coupled to earphone 30 and speaker 40 for signal processing. The control module 50 is mounted in the head mounted display device 100 in the present embodiment, for example, in the body 20. It can be understood that in other embodiments, the function module such as the control module 50 and/or the power source can be a separate independent device and connected to the head mounted display device 100 through a plug-in interface. The speaker 40 can also be disposed at any position of the head mounted display device 100, for example, can be disposed on the headband 40 or the earphone 30.

The structure of the body 20 is a box body having an internal accommodating space. As shown in FIG. 1 and FIG. 3, the inside side 20A of the box body, that is, the side corresponding to the eyes of the user, is provided with an in-plane view capable of projecting a light beam. Window 210 for the wearer to watch. The body 20 also includes a viewing outer side 20B. The viewing outside 20B of the body 20 is also provided with an exterior viewing window 220 for mounting the projector 70. In the external display mode, The external view window 220 is provided for the projector 70 to emit a light source to project the display content to the imaging medium 200. Specifically, when the main body 20 is in the above-mentioned box structure, the external viewing window 220 is disposed on the viewing outer side 20B, that is, the side where the inner side 20A is not viewed, for example, the opposite side of the side where the inner viewing window 210 is located. The inner viewing window 210 and the outer viewing window 220 may be circular, elliptical, rectangular, or the like. The inner viewing window 210 and the outer viewing window 220 are circular in this embodiment. In order to prevent dust or the like from entering the inside of the casing, the inner viewing window 210 is provided with a transparent protective cover 212. Preferably, the transparent protective cover 212 is formed by providing a transparent material at a position corresponding to the inner viewing window 210 during the integral molding process, thereby improving the overall appearance of the device.

Referring again to FIG. 3 , the two display modules 60 are disposed in the body 20 . The two display modules 60 provide display content for viewing by the wearer's left and right eyes, respectively, in the in-line display mode. Each display module 60 can be an integral structure including the display 602 and the optical module 604, or can be a single display 602 structure independent of the optical module 604. The optical module 604 is a special optical lens for projecting the light source provided by the display surface 101 of the corresponding display 602 according to a preset optical path to magnify the erect virtual image. The display source of the display module 60 is projected through the optical module 604 to the wearer's eyes in the direction in which the inner exit light source is viewed.

The projector 70 is installed in the external viewing window 220. In the external display mode, the projector 70 projects the display content onto the imaging medium 200. At this point, the wearer can remove the device and be able to view the display content while performing physical button operations. The projector 70 is a pico projector having a focusing function in this embodiment. The user can adjust the focal length of the projector 70 based on an input device, such as a keyboard or mouse, electrically coupled to the head mounted display device 100, thereby making the image projected onto the imaging medium 200 by the projector 70 clearer.

Since the placement position of the head mounted display device 100 is generally not fixed, in order to prevent the device 100 from being insufficiently or too far from the imaging medium 200, the image projected by the projector 70 is unclear. In this embodiment, the projector 70 has a focusing function. In the case of the head mounted display device 100, the distance sensor 80 is preferably further included on the body 20. The distance sensor 80 is used to measure the distance of the head mounted display device 100 to the imaging medium 200. The control module 50 is further configured to automatically adjust the focal length of the projector 70 according to the measurement result of the distance sensor 80, so that the projector 70 projects the image formation of the imaging medium 200. Clear picture. Specifically, in the present embodiment, after the switch 52 is pressed and switched to the external display mode, the control module 50 activates the distance sensor 80 to measure the distance of the device 100 to the imaging medium 200. Thereafter, control module 50 will automatically adjust the focal length of projector 70 based on the measured distance to project a sharp image.

In addition, in view of the fact that the image projected by the projector 70 to the imaging medium 200 is greatly affected by external light, the light sensor 90 is also disposed on the body 20 of the head mounted display device 100. Light sensor 90 is used to sense the intensity of light around the device. The control module 50 is further configured to adjust the brightness of the image projected by the projector 70 according to the light intensity sensed by the light sensor 90. For example, the control module 50 enhances the image brightness projected by the projector 70 onto the imaging medium 200 when the intensity of ambient light is sensed. In the present embodiment, after the switch 52 is pressed and switched to the external display mode, the control module 50 activates the light sensor 90.

In this embodiment, the default sound playing mode of the head mounted display device 100 is sound internalizing, that is, playing through the earphone 30. When the head mounted display device 100 is switched to the external display mode, the sound is automatically activated, that is, the speaker 40 is activated. Specifically, after the switch 52 is pressed and switched to the external display mode, the control module 50 activates the sound release mode, that is, the control audio signal is broadcast through the speaker 40. In this way, when the wearer removes the device 100, the synchronized audio and video content can still be enjoyed, which improves the user experience. It can be understood that the activation of the sound external release includes the simultaneous playback of the earphone 30 and the speaker 40, and also includes directly switching the speaker 40 to play, at which time the earphone 30 stops playing. The corresponding play selection mode can be flexibly set, and the better one can be provided to the user for self-configuration selection. In other embodiments, the head mounted display device 100 can also implement switching of the sound playback mode based on an input device that is electrically coupled to the head mounted display device 100, such as a keyboard or mouse (not shown).

As shown in FIG. 3, when the wearer wears the head mounted display device 100 for normal use, at this time, the control module 50 controls the two display modules 60 to display the video signal and display the direction of the light source along the inner side 20A. Projected to the wearer's eyes while controlling the audio signal to be played through the headset 30, thus giving the wearer a better audio and video experience. As shown in FIG. 4, when the switch 52 is pressed, the head mounted display device 100 is switched from the in-display mode to the external display mode. At this time, the control module 50 controls the projector 70 to display a video signal and project the display content. To the imaging medium 200, and The control module 50 activates the distance sensor 80 and the light sensor 90 to control the screen in which the projector 70 projects the image onto the imaging medium 200 to a preferred display state for viewing by the wearer, while the control module 50 activates the sound. Put, that is, control the audio signal to be played through the speaker 40. In this way, the wearer can also operate the physical keyboard electrically connected to the head mounted display device 100 to perform input operations such as characters while enjoying the audio and video content.

FIG. 5 is a perspective view of a head mounted display device 300 in a second embodiment of the present invention. The difference between the head mounted display device 300 and the head mounted display device 100 of the first embodiment is that the projector 70A of the head mounted display device 300 is a pluggable independent projector that is disposed on the body. The interface 230 of the 20 is pluggably coupled to the head mounted display device 300. When the plug 701 of the projector 70A is inserted into the interface 230, the control module 50 automatically recognizes the projector 70A and simultaneously transmits the video signal to the output of the projector 70A. The head-mounted display device 300 of the present embodiment adopts a pluggable micro-projector 70A, which can reduce the size and weight of the device and make the user's wearing more comfortable. Moreover, since the pluggable micro projector 70A has a small volume and weight, it is susceptible to external disturbances (such as accidental bumps, etc.) when used alone, resulting in image instability. With the body 20 as the support base of the micro-projector, after the micro-projector 70A is plugged in, the larger weight of the body 20 ensures that the micro-projector 70A is not easily affected by the outside world.

In the case where the head mounted display device 300 employs the pluggable projector 70A, the distance sensor 70 and the light sensor 80 may be disposed on the body 20, may also be disposed on the micro projector 70A, or may be separated It is disposed on the body 20 and the pico projector 70A.

Referring to FIG. 6 and FIG. 7, the head-mounted display device 400 of the third embodiment of the present invention is different from the head-mounted display device 100 of the first embodiment in that the external image output device is set in this embodiment. An additional display screen 62 on the outside 20B of the body 20 is provided to provide an external display mode that directly presents the preferred display content to the viewer without the aid of a lens. This additional display screen 62 is also connected to the control module 50. The user can switch the screen between the display module 60 providing the in-line display and the additional display screen 62 providing the external display mode by the operation of the switch 52. In order to reduce the size and weight of the device and make the user's wearing more comfortable, preferentially, the additional display screen 62 in this embodiment is a flexible display screen covering the front end of the body 20.

Referring to FIG. 8 , FIG. 9 and FIG. 10 together, the head mounted display device 500 of the fourth embodiment of the present invention is different from the head mounted display device 100 of the first embodiment in that the head mounted display device 500 The projector 70B and the display module 60B share the same display 602A. Specifically, the head mounted display device 500 includes a display 602A that is rotatably disposed in the body 20, a projection lens module 702 disposed in the external viewing window 220, and a near field lens module 604A disposed corresponding to the inner viewing window 210. The near field lens module 604A is the same as the optical module 604 in the first embodiment. The display 602A is transported to the body 20 via the rotating shaft 704. As shown in FIG. 9, when the display surface 101 of the display 602A is turned to view the inner side 20A, the display 602A and the near field lens module 604A cooperate to implement the functions of the display module 60 in the first embodiment, thus providing an in-display mode. As shown in FIG. 10, when the display surface 101 of the display 602A is turned to view the outer side 20B, the display 602A and the projection lens module 702 cooperate to implement the function of the projector 70 in the first embodiment, thus providing an external display mode. In this way, the projector 70B and the display module 60B share the same display, and the internal display mode and the external display mode can be realized, and the production cost of the device can be further reduced.

In the present embodiment, the projection lens module 702 is slidably disposed in the body 20 and is slidable back and forth relative to the body 20 in the direction in which the outer side 20B exits the light source. As such, the focus adjustment function of the projector 70B can be achieved by adjusting the distance between the projection lens module 702 and the display 602A. Specifically, the projection lens module 702 can be slidably coupled to the body 20 through a sliding slot (not shown) disposed in the body 20 and extending in a direction in which the outer side 20B exits the light source.

In the present embodiment, the upper end portion 240 of the body 20 is provided with a knob 250. The user can adjust the rotation of display 602A by controlling knob 250. The knob 250 functions as the switch 52 at the same time in this embodiment. Specifically, when the knob 250 is rotated 180 degrees to switch to the external display mode, the control module 50 activates the light sensor 80 and the distance sensor 90 disposed on the body 20 to cause the light source emitted by the display 602A to project through the lens module. After group 702 is projected onto imaging medium 200, a preferred display is formed for the wearer to view. As shown in FIG. 11, it will be appreciated that in other embodiments, display 602A can also be rotated by motor 706 disposed in body 20. Specifically, the motor 706 is electrically coupled to the control module 50. When the switch 52 is pressed to switch to the external display mode, the control module 50 controls the motor 706 to rotate the display 602A to rotate the display surface 101 of the display 602A. Looking to the outside 20B. In this manner, the light source emitted by the display 602A can be projected to the imaging medium 200 through the projection lens module 702, thereby implementing an external display mode.

It should be understood that the illustrations are merely schematic diagrams and are not intended to limit the specific positions of the various modules of the invention. In other embodiments, the outer side of the viewing can be flexibly selected according to requirements, and the rotatable display 602A can be disposed in the corresponding area of the viewing outer side 20B. For example, the display 602A can be placed on the body 20 to be shared to the opposite sides. As shown in FIG. 12, when the external sharing is to be performed through the side of the body 20, the display surface 101 of the display 602A can be turned to the rotating shaft 704. Side to external. In the in-display mode, the display surface 101 can be rotated to a viewing window corresponding to the inner side 20A, or can be rotated to other directions, as long as the display surface 101 is directed toward the near-field lens module 604A. On the side, the optical path designed by the near-field lens module 604A can form an outgoing light beam by viewing the viewing window corresponding to the inner side 20A. In accordance with the above principles of the present invention, display 602A can be placed anywhere in body 20.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is the scope of protection of the present invention.

Claims

A head mounted display device includes a body, a display module disposed in the body, and a control module electrically connected to the display module, wherein the head mounted display device further comprises an electrical connection An external image output device of the control module, the control module controlling the display module to display a video signal inward to provide an in-line display mode, and controlling the external image output device to display a video signal outward to provide an external display mode.
The head mounted display device of claim 1 , wherein the head mounted display device further comprises a switch electrically connected to the control module, the switch generating a switching signal to the control module, The control module switches between the in-pair display mode and the external display mode in response to the switching signal.
A head mounted display device according to claim 1, wherein said external image output device comprises a projector.
The head mounted display device of claim 3, wherein the head mounted display device further comprises a distance sensor electrically connected to the control module for measuring the head mounted display device to The distance of the object to be projected, the control module adjusts the focal length of the projector according to the measurement result of the distance sensor.
A head mounted display device according to claim 3, wherein said projector is a pluggable projector electrically connected to said control module via an interface provided on said body.
A head mounted display device according to claim 5 wherein said control module automatically identifies said projector when said projector is inserted into said interface and controls video signals to be projected through said projector.
The head mounted display device according to claim 1, wherein the head mounted display device comprises a display rotatably disposed in the body, a projection lens module, and a near field lens module, wherein the display The display surface is turned to the near field lens module to provide the in-line display mode, and the display surface of the display is turned to the projection lens module to provide the external display mode.
The head-mounted display device according to claim 7, wherein the projection lens module is slidably disposed on the body, and the head-mounted display device adjusts the projection lens module and the display The distance between them achieves focus adjustment.
A head mounted display device according to claim 1, wherein said external image output device comprises an additional display screen disposed outside said body.
The head mounted display device according to any one of claims 1 to 9, wherein the head mounted display device further comprises an earphone and a speaker electrically connected to the control module, wherein the control module is in the The control audio signal is played through the earphone when the in-display mode is described, and the audio signal is controlled to be played through the speaker when in the external display mode.
The head mounted display device according to any one of claims 1 to 9, wherein the head mounted display device further comprises a light sensor electrically connected to the control module, wherein the light sensor is used To sense the intensity of light around the head mounted display device, the control module adjusts the image brightness of the external image output device according to the light intensity sensed by the light sensor.