WO2017113117A1

WO2017113117A1 - Head-mounted display device

Info

Publication number: WO2017113117A1
Application number: PCT/CN2015/099545
Authority: WO
Inventors: 施宏艳
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2017-07-06
Also published as: CN107250885B; CN107250885A

Abstract

A head-mounted display device (100), comprising a body (20), a display module (10) provided in the body, and a reflecting apparatus (30) rotatably provided in the body. The body comprises an internal viewing side (20A) and an external viewing side (20B). The reflecting surface (301) of the reflecting apparatus can be turned to an exit pupil direction, to project, via the internal viewing side, a display source of the display module out of the body so as to provide an internal display mode, and the reflecting surface can be turned to the external viewing side to project the display source of the display module to an imaging medium (200) along a direction in which a light source emits light via the external viewing side, so as to provide an external display mode. In the head-mounted display device, the reflecting apparatus is rotatably provided, and thus, when a wearer needs to share the display contents with others, the reflecting apparatus is rotated to project the display source of the display module to an imaging medium along a direction in which the light source emits light via the external viewing side for others to watch, without the necessity of the wearer taking off the device.

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 wearer wishes to share the display content with others, the wearer is generally required to remove the device for others to wear, thus causing the wearer not to share the display content with others at the same time.

Summary of the invention

Embodiments of the present invention disclose a head mounted display device that allows a wearer to share display content with others without requiring the wearer to remove the device.

The head-mounted display device disclosed in the embodiment of the invention includes a body and a display module disposed in the body. The body includes a viewing inner side and a viewing outer side. The head mounted display device further includes a reflective device rotatably disposed in the body. a reflective surface of the reflective device can be turned out of the exit pupil to project a display source of the display module out of the body via the viewing inner side to provide an in-line display mode, and the reflective surface can be turned to the viewing outer side A display source of the display module is projected to the imaging medium in a direction in which the outer side exits the light source to provide an external display mode.

The head mounted display device of the present invention rotates the reflecting device so that when the wearer needs to share the display content with others, the reflecting device is rotated to project the display source of the display module to the imaging medium in the direction of viewing the outside outgoing light source to provide others Watch, no need for the wearer to remove the device.

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 of ordinary skill in the art, without creative efforts, Other drawings can be obtained from these figures.

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

2 is a schematic diagram of an optical path of a head mounted display device in an in-display mode according to an embodiment of the present invention;

FIG. 3 is a block diagram of a head mounted display device;

4 is a schematic diagram of an optical path after a display module of a head mounted display device is switched to an external display mode according to an embodiment of the present disclosure;

5 is a schematic diagram of an optical path of a head mounted display device in an external display mode in another embodiment;

6 is a schematic diagram of an optical path of a display module of a head mounted display device in an external display mode in still another embodiment.

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, two display modules 10 disposed in the body 20, and two reflective devices rotatably disposed in the body 20. 30. The two display modules 10 provide display content for viewing by the wearer's left and right eyes, respectively. Each of the reflecting devices 30 is rotatable relative to the body 20 such that each of the reflecting devices 30 can project the display source of the display module 10 out of the body 20 through the viewing inner side in a direction in which the reflecting surface 301 is turned out of the slanting direction 301, when the wearer wears the After the head mounted display device 100, the wearer's eye 201 corresponds to the optical exit pupil in the wearable display device 100, i.e., the display source is projected onto the wearer's eye 201 by viewing the inside to provide an in-line display mode. And turning to the outside to project the display source of the display module 10 to the imaging medium 200 (see FIG. 4) in a direction to view the outer exit light source to achieve an external display mode, thereby providing an in-display mode for the wearer to view and for the wearer to The others watched the switch between the external display modes. In order to illustrate the solution of the present invention, the following will be taken as the wearer's eye 201 To signal the embarrassment. The light source of the display module 10 provides a light source for the display content of the display module 10, and the display content can be understood as an image. Thus, when the wearer needs to share the display content with others, one of the reflecting devices 30 or the two reflecting devices 30 can be switched to the external display mode, thereby achieving display content sharing.

Referring to FIG. 3 together, the head mounted display device 100 further includes a headband 42 connected to the body 20 for wearing the head mounted display device 100 to the wearer's head, an earphone 44, and the earphone 44 disposed in the body 20. Speaker 46 and processor 50. The processor 50 is electrically coupled to the earphone 44, the two display modules 10, and the speaker 46 for signal processing. The processor 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 functional modules such as the processor 50 and/or the power supply can be separate independent devices and connected to the head mounted display device 100 through a plug-in interface. The speaker 46 can also be disposed at any position of the head mounted display device 100, for example, can be disposed on the headband 42 or the earphone 44.

The structure of the body 20 is a box body having an internal accommodating space. As shown in FIG. 1 and FIG. 2, the inside of the box body 20A, 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 external viewing window 220 for providing a light source of the display module 10 in an external display mode for viewing by others. Specifically, when the main body 20 is in the above-mentioned box structure, the external viewing window 210 is disposed on the viewing outer side 20B, that is, the side on which the inner side 20A is not viewed, for example, may be 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. In other embodiments, the external viewing window 220 can also be realized by using the transparent material for the whole body 20 to view the outer side 20B. The inner viewing window 210 and the outer viewing window 220 are circular in this embodiment. In this embodiment, the viewing window can be understood as an opening provided in the body 20 to realize light emission. In order to prevent dust and the like from entering the inside of the casing, the inner viewing window 210 and the external viewing window 220 are provided with a transparent protective cover 212. Preferably, the transparent protective cover 212 is formed by providing a transparent material in a position corresponding to the external viewing window and the inward viewing window during the integral molding process, thereby improving the overall appearance of the device.

Referring again to FIG. 2 , the two display modules 10 are disposed in the body 20 . Each display module 10 may be an integral structure including display 102 and optical module 104, or may be a single display 102 structure independent of optical module 104. The optical module 104 is a special optical lens for projecting the light source provided by the corresponding display surface 101 to enlarge the erect virtual image according to a predetermined optical path. In the present embodiment, the two display modules 10 are disposed opposite each other, that is, the display faces of the two are opposite to each other, so as to reduce the thickness of the product of the head-mounted display device 100 in the viewing direction of the wearer, thereby making the overall structure of the product more compact. The direction in which the display source of the display module 10 passes through the optical module 104 intersects the direction in which the inner outgoing light source is viewed at the intersection A. The intersection A is located on the reflective surface 301 of the reflecting device 30 when the device is in the in-line display mode.

The reflecting device 30 is a total reflection lens in this embodiment. The reflecting device 30 includes a reflecting surface 301 and a back surface 302 opposite to the reflecting surface 301. The reflecting surface 301 is coated with a visible light broadband antireflection film, and the back surface 302 is a frosted surface. Each of the reflecting means 30 is provided with a rotating shaft 80 on opposite side edges (for example, an upper side and a lower side). The reflecting device 30 is rotatably coupled to the body 20 via a rotating shaft 80. The two shafts 80 are coaxially arranged. The axes of the shafts are respectively the axes of symmetry of the reflecting means 30 in this embodiment. The axis of the rotating shaft is perpendicular to the direction in which the display source of the display module 10 passes through the optical module 104 and the direction in which the inner outgoing light source is viewed. In other embodiments, the reflective device 30 can be configured to project a display source of the display module 10 to the wearer's eye 201 in a direction to view the inner exit light source to provide an in-line display mode and to project the imaging medium in a direction to view the outer exit light source. On the premise of realizing the external display mode, the rotating shaft 80 may also be disposed at other positions on the opposite side edges of the reflecting device 30, such as the end of the corresponding side or the back surface 302 of the reflecting device 30, in which case the rotating shaft The axis of 80 is parallel to the axis in this embodiment. The rotating shaft 80 can also be disposed on one side of the reflecting device 30, such as the left side or the right side, as long as the reflecting surface 301 of the reflecting device 30 can be turned according to the rotating shaft 80 to project the display source to the corresponding inward viewing window 210. And it can be turned to realize that the display source is projected to the corresponding external viewing window 220 direction, so that the in-display mode and the external display mode can be realized. Specifically, as shown in FIG. 2, when the wearer does not need to share the display content with others, the reflection device 30 turns to view the inner side 20A and the angle α between the reflective surface 301 and the horizontal plane (ie, the optical axis X of the optical module 104) is 45 degrees, at this time, the light source provided by the display surface of the display module 10 is projected by the optical module 104 to the reflective surface 301 of the reflecting device 30, and is reflected by the reflecting surface 301 and then viewed through the inward viewing window 210. The direction of the light source is projected onto the wearer's eye 201. As shown in FIG. 4, when the wearer shares the display content with others, the reflecting device 30 turns to view the outer side 20B and the angle β between the reflecting surface 301 and the horizontal plane (ie, the optical axis X of the optical module 104) is 135 degrees. The light source provided by the display module 10 is projected onto the reflective surface 301 of the reflective device 30 via the optical module 104, and is reflected by the reflective surface 301 and projected through the external viewing window 220 to the imaging medium 200 in the direction of viewing the external outgoing light source. .

Preferably, the head mounted display device 100 further includes a projection lens 40 disposed in the external viewing window 220. The shape of the projection lens 40 is adapted to the shape of the external viewing window 220. In order to protect the projection lens 40, a transparent protective cover is disposed in the external viewing inspection 220 and on the side of the projection lens 40 near the viewing outer side 20B. The projection lens 40 is used to project a light source reflected by the reflecting device 30 to an imaging medium 200 (such as a screen or a white wall) outside the device in an external display mode to form an enlarged image to allow multiple people to share. The projection lens 40 is composed of various lenses, for example, concave lenses, convex lenses, meniscus lenses, and the like according to actual needs of the projection distance, and the structural combination of the projection lenses illustrated in the drawings is merely an example. The optical axis of the projection lens 40 coincides with the direction in which the outer side exits the light source. The size of the image transmitted through the projection lens 40 is determined by the projection distance between the projection lens 40 and the projection lens 40 to the imaging medium, and the focus can be adjusted by adjusting the distance between the projection lens 40 and the reflection device 30. Therefore, the projection lens 40 is movably disposed on the body 20 in this embodiment. In an embodiment, the body 20 is provided with a sliding slot extending in the direction of the outgoing light source. The projection lens 40 is slidably disposed in the sliding slot, and can be driven by the motor or the like to drive the projection lens 40 to slide back and forth along the sliding slot. focusing. The chute in this embodiment allows and limits the projection lens 40 to slide in the direction in which the outer side exits the light source. In other embodiments, the projection lens 40 is disposed to the body 20 by a telescoping mechanism similar to that known in the art for implementing conventional digital camera lens telescoping. The telescopic mechanism expands and contracts in a direction in which the outer side emits the light source.

It should be understood that the illustrations are merely schematic diagrams, and the various modules are not intended to limit the specific positions of the various modules of the present invention. In other embodiments, the outer side of the viewing device can be flexibly selected according to requirements, and the reflecting surface 301 of the rotatable reflecting device 30 can be turned to view the external viewing window 220 corresponding to the outer side 20B, or can be rotated to other directions, as long as the reflecting device 30 is in this mode. The reflecting surface faces the light emitting side of the optical module 104, and the light path designed by the optical module 104 is reflected and formed through the external viewing window 210. The beam can be emitted. For example, the external viewing window 220 can be disposed at opposite ends of the viewing outer side 20B of the body 20. When the external sharing is to be performed through the front side of the body 20, the reflecting device 30 can be rotated by the rotating shaft 80 by a certain angle to make the display module 10 After the light source is reflected by the reflecting surface 301 and then passed through the two external viewing windows 220 and projected onto an imaging medium outside the device, such as a screen or a white wall, etc., the display content is shared with others. In the in-display mode, the reflective surface 301 can be turned to view the inner viewing window 210 corresponding to the inner side 20A, or can be rotated to other directions. In this mode, the reflecting surface of the reflecting device 30 faces the light emitting side of the optical module 104. The light path reflected by the optical module 104 is formed to form a light beam that passes through the inward viewing window 210 corresponding to the inner side 20A. In accordance with the above principles of the present invention, display 102, optical module, reflective device 30, and projection lens 40 can be placed anywhere on body 20.

The head mounted display device 100 also includes a motor 48 disposed in the body 20. Motor 48 is used to rotate reflective device 30. A bearing (not shown) of the motor 48 is fixedly coupled to the rotating shaft 80 in this embodiment. It can be understood that in the actual mode, the bearing of the motor 48 can also be indirectly connected to the rotating shaft 80 through a gear set or the like. Motor 48 is preferably a stepper motor or a servo motor.

The processor 50 is also electrically coupled to the motor 48 for controlling the motor 48 to rotate the reflective device 30 such that the display surface 301 of the reflective device 30 is turned to view the inner side 20A to effect the in-line display mode and the turn to view the outer side 20B to achieve the external display mode. Preferably, the head mounted display device 100 further includes an input module 70 electrically coupled to the processor 50 in this embodiment. The input module 70 is configured to accept an operation by the user to control the rotation of the reflective device 30 and generate a user input command. The processor 50 controls the motor 48 to rotate the reflective device 30 in response to a control user input command. The input module 70 can be a button, a touch pad, a voice input module, or the like disposed on the body 20 . In this way, the user can rotate the reflecting device 30 by pressing a button or operating the touchpad; or by inputting a voice password, such as "inward rotation" or "outward rotation", the display surface 301 of the control reflection device 30 is turned to the inside to realize the inward display. Mode, or turn to the outside to achieve the external display mode.

In this embodiment, the default sound playing mode of the head mounted display device 100 is sound internalizing, that is, playing through the earphone 44. When the display module 10 is switched to the external display mode, the sound is automatically activated, that is, the speaker 46 is activated. Specifically, the head mounted display device 100 further includes two rotations. Sensor 60. The two rotation sensors 60 are electrically connected to the processor 50 for detecting the state of the reflection device 30 and generating a detection signal when it is detected that the arbitrary reflection device 30 is switched to the external display mode. The processor 50 is configured to activate the sound pop-up mode when the detection signal is received, i.e., control the audio signal to be broadcast through the speaker 46. In this way, the wearer can share audio and display content with others to improve the user experience. It can be understood that when the detection signal is received, the activation of the sound external release includes the simultaneous playback of the earphone 44 and the speaker 46, and also includes directly switching the speaker 46 to play, at which time the earphone 44 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 switch the sound playing mode based on the input module 70, for example, when the user can rotate the reflecting device 30 by pressing a button or operating the touch panel; or by inputting a voice. The processor 50, for example, "turns inwardly" or "turns outward" to control the display surface 301 of the reflecting device 30 to turn to the inside to achieve the in-display mode, or to turn to the outside to implement the external display mode, the processor 50 displays the corresponding in-pair The mode controls the audio signal to be played through the headphones 42, and controls the audio signal to be played through the speaker 46 in the external display mode.

As shown in FIG. 2, in use, if the wearer does not need to share the display content with others, the reflection device 30 can be switched to the in-display mode. At this time, the display surface 301 of the reflection device 30 is oriented toward the inside of the viewing area 20A, and the display module The light source provided on the display surface is projected to the wearer's eyes in the direction of viewing the inner outgoing light source through the optical module 104 and the reflective surface 301. As shown in FIG. 4, when the wearer needs to share the display content with others, one or two of the reflecting devices 30 are rotated to switch the reflecting device 30 to the external display mode, at which time the reflecting surface 301 of the reflecting device 30 is turned Viewing the outer side 20B, the light source provided by the display surface of the display module 10 is projected onto the imaging medium outside the device through the optical module 104, the reflective surface 301, and the projection lens 40, and the direction of the outer outgoing light source is viewed so that others can see the display content. . At the same time, the rotation sensor 60 generates a detection signal, and the processor 50 controls the audio signal to be played out through the speaker 46. In this way, the wearer can share audio and display content with others to improve the user experience.

As shown in FIG. 5, in other embodiments, when the above two display modules 10 are adopted, one of the reflecting devices 30 may be fixedly disposed, and the other reflecting device 30 is rotated to realize external display, for example, the right side display. The reflecting device 30 (right reflecting device) corresponding to the module 10 is rotationally disposed. Such as Therefore, when external display is required, the right reflecting means 30 is rotated to turn the reflecting surface 301 toward the outer side 20B.

As shown in FIG. 6, in order to enable the wearer to maintain the binocular viewing while sharing the display content with others, a spectroscopic module 109 may be added to the device. In the external display mode, the light beam displayed by the left display 10 separates two light beams through the beam splitting module 109, and the two light beams pass through the inner viewing window 210 and are respectively projected to the wearer's eyes.

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 and a display module disposed in the body, the body includes a viewing inner side and a viewing outer side, wherein the head mounted display device further comprises a rotating body disposed on the body a reflecting device in which a reflecting surface of the reflecting device can be turned out of a direction in which the display source of the display module is projected out of the body to provide an in-line display mode, and the reflecting surface is steerable The viewing outside projects the display source of the display module to the imaging medium in a direction to view the outer exit light source to provide an external display mode.
The head-mounted display device according to claim 1, wherein the display module comprises an optical module disposed in the body, and the optical module is configured to display a display source provided by the display module according to a predetermined optical path projects an enlarged virtual image to the reflecting device, and the reflecting device projects the enlarged virtual image projected by the optical module in the outward mode along the direction of viewing the outer outgoing light source to the The imaging medium is described.
The head-mounted display device according to claim 2, wherein the head-mounted display device further comprises a projection lens disposed on the body, wherein the optical module is used in the external display mode A virtual image of the display source projected and formed on the reflective device is projected onto the imaging medium to form an enlarged real image.
A head mounted display device according to claim 3, wherein an optical axis of said projection lens coincides with a direction in which said outer side exits the light source.
The head-mounted display device according to claim 3, wherein the viewing outer side is provided with an external viewing window for providing a light source reflected by the reflecting device when the external display mode is used, the projection The lens is mounted on the external viewing window.
A head-mounted display device according to claim 1, wherein said reflecting means is disposed on said body by a rotation of said rotating means, said reflecting means having said reflecting surface and said optical mode in said in-pair display mode The angle between the optical axis of the group and the direction in which the inner outgoing light source is viewed is 45 degrees.
The head mounted display device according to claim 6, wherein the head mounted display device further comprises a motor disposed in the body, and a process electrically connected to the display module and the motor The processor is configured to control the motor to rotate the reflecting device.
A head mounted display device according to claim 7, wherein said head mounted display The device also includes an input module electrically coupled to the processor, the input module for accepting an operation of the user to control rotation of the reflective device and generating a user input command, the processor controlling the control unit in response to the user input command The motor rotates the reflecting device.
The head-mounted display device according to claim 6, wherein the input module is a button disposed on the body, or a touch pad, or a voice input module.
A head mounted display device according to claim 1, wherein said head mounted display device further comprises an earphone, a speaker electrically connected to said processor, said processor for said in-line display mode The audio signal is controlled to be played through the earphone, and the audio signal is controlled to be played through the speaker when the external display mode is enabled.
A head mounted display device according to claim 10, wherein said head mounted display device further comprises a rotation sensor electrically coupled to said processor, said rotation sensor for detecting a state of said reflecting means And generating a detection signal when detecting that the reflecting surface of any one of the reflecting means is turned to the direction of viewing the outside outgoing light source, and the processor is configured to control the audio signal to be broadcasted through the speaker when the detecting signal is received.
The head-mounted display device according to any one of claims 1 to 8, wherein the head-mounted display device comprises a beam splitting module, and the beam splitting module is configured to be in the external display mode. The light source of the display module separates two light beams, and the two light beams are respectively projected to the wearer's eyes after passing through the inner viewing window.
A head mounted display device according to any one of claims 1 to 8, wherein the reflecting means is a total reflection lens.
A head mounted display device according to claim 13, wherein the reflecting surface of the reflecting means is plated with a visible light broadband antireflection film.