WO2015139561A1

WO2015139561A1 - Head-mounted display device

Info

Publication number: WO2015139561A1
Application number: PCT/CN2015/073687
Authority: WO
Inventors: 赵霄翔; 黄琴华
Original assignee: 成都理想境界科技有限公司
Priority date: 2014-03-20
Filing date: 2015-03-05
Publication date: 2015-09-24

Abstract

A head-mounted display device, comprising an eye cover (4), a lens frame (5) and two groups of optical systems installed within the lens frame (5); each group of optical system comprises an image display screen (1), a plane reflector (2) and a group of visual amplification optical assemblies (3); each group of visual amplification optical assembly (3) is a single positive focus lens or a positive focus lens group consisting of a plurality of lenses; the eye cover (4) is connected to one end of the lens frame (5); and the two groups of visual amplification optical assemblies (3) are installed side by side at the connection of the lens frame (5) and the eye cover (4). Each group of optical systems has the following optical path: the optical information transmitted by the image display screen (1) is reflected by the plane reflector (2), and enters the eyes (9) via the visual amplification optical assemblies (3). The head-mounted display device enables a user to enjoy a large screen stereoscopic visual effect, suitable for watching a 3D film or displaying a 3D game scene, and has good isolation property without affecting people nearby, suitable for people wishing to have a private space. In addition, the head-mounted display device has a simple structure, a light and clever design, facilitating industrial production, and is of low cost.

Description

Head mounted display device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. CN201410104242.5 and CN 201420126790.3, filed on March 20, 2014, which is incorporated herein by reference.

Technical field

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

Background technique

With the rapid development of 3D display technology, 3D stereoscopic display technology is revolutionizing and changing people's communication, work and lifestyle. In 2010, the global industrial environment represented by 3D TV and 3D film and television became increasingly mature. Compared with the traditional display, the stereoscopic display has the biggest feature that the stereoscopic display can make people experience the huge impact and extreme shock of stereoscopic vision. Therefore, whether the stereoscopic effect is strong or not is an important indicator for measuring stereoscopic display products. Stereoscopic display application technology and technology have restored the true three-dimensional world of human beings and will lead the development trend of future video technology.

However, traditional stereoscopic display technologies, such as 3D movies, televisions, etc., greatly limit the user's viewing space, and most portable stereoscopic display devices on the market cannot satisfy the user's resolution, field of view and portability. Claim. Although the versatile miniaturized electronic display device can bring convenience to users, such as Google Glass, "portable" and "small size" also limit the size of the display, and the smaller display is easy to cause the user's eye. fatigue. Therefore, how to make the single device have the characteristics of "miniaturization" and "large display" has become an important issue to be solved.

Summary of the invention

The object of the present invention is to provide a head-mounted display device having both "miniaturization" and "large display" characteristics, allowing a user to connect to a mobile phone, a tablet computer, and the like with a play function at any time and any place by wire or wirelessly. Enjoy large-screen stereoscopic effects on electronic devices.

In order to achieve the above object, the present invention provides a head mounted display device including an eye cover, a frame and two sets of optical systems mounted in the frame; each set of optical systems includes an image display screen, a planar mirror and a set of visual magnification optical components, each set of visual magnification optical components being a single positive lens or a plurality of lenses; the eyecup is connected to one end of the frame, and two sets of visual amplifying optical components Side by side at the position where the frame is attached to the eyecup; the light of each group of optical systems The road is: the optical information emitted by the image display screen is turned by the plane mirror, and then the optical component is visually magnified to enter the human eye.

When the video is viewed by the head-mounted display device of the present invention, when the images displayed by the two image display screens are completely identical, it is a normal 2D video, and when the image displayed by the two image display screens has a certain level difference, it is a 3D stereoscopic image.

Preferably, two image display screens of the two sets of optical systems are mounted back to back in the center of the frame, and the two plane mirrors are respectively mounted in the frame at an angle of 30 degrees to 60 degrees with the corresponding image display screens.

Preferably, two image display screens of the two sets of optical systems are respectively mounted on the left and right sides of the frame, and the two plane mirrors are respectively installed in the frame at an angle of 30 degrees to 60 degrees with the corresponding image display screens.

Preferably, two image display screens of the two sets of optical systems are mounted above or below the frame, and the two plane mirrors are respectively mounted in the frame at an angle of 30 degrees to 60 degrees with the corresponding image display screens; A spacer is placed in the center of the frame to completely block the image seen by both eyes.

Preferably, the head mounted display device further includes a peripheral connection circuit, and the peripheral connection circuit is connected to the electronic device having the play function by wire or wireless to obtain information to be displayed.

Preferably, the head mounted display device further comprises a diopter adjuster, the diopter adjuster being located at a near end of the visual amplifying optical component.

Preferably, a distance adjustment mechanism is provided between the two sets of optical components in the visual magnification optical system for adjusting the distance between the two optical components.

Preferably, the visual magnification optical component is coupled with a focus adjustment mechanism for adjusting the focal length of the two optical components.

Preferably, the two sides of the frame are respectively provided with buckles for fastening the head wearing telescopic belt.

The invention has the following beneficial effects:

1. The head-mounted display device of the present invention has a visual magnification optical system, and presents a magnified virtual image at a certain distance in front of the human eye, so that the user can enjoy the large-screen stereoscopic visual effect;

2. The head-mounted display device of the present invention can be used for 3D movie viewing, 3D game scene display, etc., and has good sealing performance, does not affect people around, and is very suitable for people who wish to have personal space;

3. The head-mounted display device of the invention has a simple structure, a light design, is convenient for industrialization, and has low cost.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained according to these drawings for those skilled in the art without any inventive labor:

1 is an optical schematic diagram of each set of optical systems in an embodiment of a head mounted display device of the present invention;

2 is a layout diagram of an optical system of a first embodiment of a head mounted display device of the present invention;

3 is a schematic exploded view showing the structure of the first embodiment of the head mounted display device of the present invention;

Figure 4 is a schematic view of the structure of Figure 3 assembled;

5 is a layout view of an optical system of a second embodiment of the head mounted display device of the present invention;

6 is a schematic exploded view showing the structure of the second embodiment of the head mounted display device of the present invention;

Figure 7 is a schematic structural view of Figure 6 assembled;

8 is a layout view of an optical system of a third embodiment of the head mounted display device of the present invention;

9 is a schematic exploded view showing the structure of the third embodiment of the head mounted display device of the present invention;

Figure 10 is a schematic structural view of Figure 9 assembled;

11 is a schematic structural view of the device of FIG. 10 wearing a telescopic belt through a snap-fit head above the eyecup;

12 is a schematic structural view of the apparatus of FIG. 10 wearing a telescopic belt through a buckle connection on both sides of the frame;

13 is a first embodiment of an asymmetric layout of an optical system of a head mounted display device according to the present invention;

Figure 14 is a second embodiment of the optical system of the head mounted display device according to the present invention;

Marked in the figure: 1-image display, 2-plane mirror, 3-visual magnification optics, 4-eye mask, 5-frame, 51-frame body bracket, 52-frame rear wall, 53-mirror Shelf cover, 6-partition, 7-clip, 8-headed retractable strap, 9-human eye position.

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, but not all 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.

The head mounted display device of the embodiment of the invention includes an eye cover 4, a frame 5 and two sets of optical systems mounted in the frame 5. Each of the optical systems includes an image display screen 1, a plane mirror 2, and a set of visual magnification optical components 3. Each set of the visual amplifying optical components 3 is a single-focus positive-focus lens or a positive-focus lens group composed of a plurality of lenses. That is, each set of the visual amplifying optical component 3 may be a positive lens, a lens group composed of a plurality of positive lenses, or a lens group composed of a plurality of negative lenses and positive lenses. Further, the lens constituting the visual amplifying optical unit 3 may be a spherical lens, an aspherical lens, a Fresnel lens, a free-form lens, a meniscus lens, a Fresnel lens or the like. For example, each set of visual amplifying optical components 3 in the visual amplifying optical system may be composed of a meniscus lens and a convex lens. The eyecup 4 is connected to one end of the frame 5, and the two sets of the visual amplifying optical components 3 are installed side by side at the position where the frame 5 and the eyecup 4 are connected (the position where the frame 5 and the eyecup 4 are connected is the vicinity of the connection position of the frame 5 and the eyecup 4, That is, the visual amplifying optical system may be mounted on the frame 5, or may be mounted on the eyecup 4 or at an intersection of the two.

Figure 1 shows the optical principle of an optical system. As shown in FIG. 1 , the specific optical path is: after the optical information emitted by the image display screen 1 is turned by the plane mirror 2 , the optical component 3 is visually magnified and enters the human eye 9 , and the human eye 9 sees the image in the human eye 9 . Enlarged virtual image at a certain distance in front. Thus, people can enjoy the large screen effect of watching a movie in a theater.

The head mounted display device of the embodiment of the present invention further includes a peripheral connection circuit (the peripheral connection circuit includes a wired connection interface and/or a wireless connection module, which are not illustrated in the drawings). The peripheral connection circuit is connected to an electronic device having a playback function by wire or wirelessly to obtain information to be displayed. The electronic device with the playback function can be a television, a mobile phone, a tablet, or the like. The head-mounted display device can be designed to be powered by its own battery or it can be designed to be powered by the power of the external electronic device when it is connected by wire.

When the video is viewed by the head-mounted display device of the present invention, when the images displayed by the two image display screens 1 are completely identical, it is a normal 2D video; when the images displayed by the two image display screens 1 have a certain level difference, it is a 3D stereoscopic image.

In the embodiment of the present invention, the two sets of optical systems installed in the frame 5 have the same optical principle, and the optical components 3 in the two sets of optical systems can be arranged in a symmetrical structure (as shown in FIG. 2, FIG. 5, FIG. 8). It can also be laid out as an asymmetric structure (see Figure 13 and Figure 14). Several preferred embodiments are specifically described below in conjunction with the drawings.

Embodiment 1:

Embodiment 1 of the present invention will be described below with reference to Figs. 2 to 4 . As shown in FIG. 3, the frame 5 includes a frame main body bracket 51 and a frame rear wall 52. In this embodiment, two image display screens 1 of the two sets of optical systems are mounted in a back-to-back manner substantially vertically at the center of the frame main body bracket 51. The two plane mirrors 2 are mounted substantially vertically on the frame rear wall 52, and the image display screen 1 corresponding to each plane mirror 2 has an angle of 30 degrees to 60 degrees. Preferably, the included angle is 45 degrees. Two sets of visual amplifying optical components 3 are mounted side by side at the position where the frame 5 and the eyecup 4 are connected.

In Figs. 3 and 4, one end of the frame 5 is connected to the eyecup 4, and the other end is designed to have the same inclination angle as the two plane mirrors 2. Then, the two plane mirrors 2 are directly attached to the inner side walls of the frame rear wall 52 on the opposite side of the eyecup 4, so that the entire frame 5 is triangular. In this way, the size of the head-mounted display device can be made as small as possible. However, in actual implementation, the frame 5 can be completely designed as a square or other shape, as long as the optical system components can be installed in the frame according to the layout of FIG.

In the two embodiments, the two image display screens 1 of the two sets of optical systems can be two display screens of a dual-screen mobile phone, and the dual-screen mobile phone can be directly inserted into the center of the frame.

Embodiment 2:

The second embodiment of the present invention will be described below with reference to FIGS. 5 to 7. In this embodiment, two image display screens 1 of the two sets of optical systems are respectively vertically mounted on the left and right sides of the frame 5, and the two plane mirrors 2 are vertically mounted in the frame 5, respectively, and the planes are respectively The mirror 2 and the corresponding image display screen are at an angle of 30 degrees to 60 degrees. Preferably, it is at an angle of 45 degrees.

Embodiment 3:

The third embodiment of the present invention will be described below with reference to FIGS. 8 to 10. The frame 5 shown in FIG. 9 includes a frame body bracket 51 and a frame The rear wall 52 and the frame upper cover 53 are three-part. In this embodiment, two image display screens 1 of the two optical systems are installed side by side on the frame, and the two plane mirrors 2 are respectively mounted on the mirror at an angle of 30 degrees to 60 degrees with the corresponding image display screen 1 respectively. In the embodiment, in order to avoid the interference of the left image with the right eye and the interference of the right image with the left eye, the frame 5 is also provided with a partition piece 6 for completely viewing the image seen by both eyes. cut off.

In Fig. 9 and Fig. 10, one end of the frame 5 is connected to the eyecup 4, and the other end is designed to have the same inclination angle as the two plane mirrors. The plane mirror 2 is directly attached to the inner side of the frame rear wall 52 on the opposite side of the eyecup 4. On the wall, this way can make the size of the head-mounted display device as small as possible, but in actual implementation, the frame 5 can be completely designed as a square or other shape as long as the plane mirror 2 can be mounted in the frame 5, and It can be at an angle of 30 degrees to 60 degrees with the image display screen 1. In the embodiment of the present invention, the two image display screens 1 can be designed to be installed horizontally above or below the frame in a horizontal direction, or each of them can have a certain inclination angle with the horizontal direction, and even two image display screens 1 can be mounted thereon. The misalignment is installed in the frame 5 (see Figure 14 for the light path).

When two image display screens 1 are mounted side by side on the frame or side by side under the frame (for example, FIG. 9), the two plane mirrors 2 in the two optical systems can be integrally formed, that is, two plane mirrors. 2 Physically a complete plane mirror, only the partitions are separated in the middle to form two left and right plane mirrors.

It should be emphasized again that although the optical system layouts listed in the above three embodiments are all symmetric structures, the present invention does not limit the two sets of optical structures to a symmetric layout, which may be an asymmetric structure, as shown in FIG. Figure 14 shows. Even the optical system is arranged in a more misaligned manner than in Figs. 13 and 14, as long as the left and right optical systems satisfy the optical path principle of Fig. 1.

In the embodiment of the present invention, in order to facilitate the installation of the optical components in the frame 5, various support frames can be designed according to specific conditions, which are not limited herein, and the shape of the frame 5 can also be designed as needed, as long as Install the optical components as needed.

The present invention provides a head-mounted display device, and FIGS. 4, 7, and 10 all show the main structure of the head-mounted display device. These head-mounted display devices can be worn by wearing a telescopic belt, a helmet bracket, a hat, and the like. On the user's head, FIG. 11 and FIG. 12 are exemplified by providing a head-mounted retractable belt in FIG. As shown in FIG. 11, a buckle 7 is disposed above the eye cover 4 for fastening the headband 8; as shown in FIG. 12, a buckle 7 is respectively disposed on both sides of the frame 5 for fastening the head extension With 8. Among them, the wearing manner of FIG. 11 is more ergonomic than that of FIG. When the method of Figure 12 is worn, the weight of the device may be pressed against the face of the user; in the mode of Figure 11, the buckle 7 is closely attached to the forehead of the user, and the center of gravity is moved upwards, and the force is mainly concentrated on the forehead of the user, and the face of the user is not Causes a sense of oppression.

The eye shields of the head-mounted display device of the embodiments of the present invention can be set to have a wide aperture, and the user can directly wear the device while wearing the frame glasses.

Each of the head-mounted display devices of the present invention may include a diopter adjuster (not shown in the drawing), the diopter adjustment The eliminator is located at the near-eye end of the visual amplifying optical system, and the diopter adjuster can adjust the diopter within a certain range, so that the user whose diopter is within the range can use the head normally without wearing glasses. Wear a display device.

The head-mounted display device of the present invention may further be provided with a distance adjusting mechanism (the adjusting mechanism may be a gear mechanism) between the two sets of optical components in the visual amplifying optical system for adjusting the two optical components. The distance between them to accommodate users with different interpupillary distances. In order to adjust the distance between the two sets of optical components, in addition to the gear adjustment, the two sets of optical components can be clamped to the frame and the eyecup through the waist hole, so that the two optical components can be manually adjusted. The distance between the two to accommodate users with different interpupillary distances, the mechanical structure similar to the waist hole is also a kind of distance adjustment mechanism.

The visual amplifying optical system in the head-mounted display device of the embodiments of the present invention may also be designed to be connected with a focal length adjusting mechanism for adjusting the focal length of the two optical components to adapt to the image quality of the video with different pixel densities through the optical system. . In the implementation of the solution, the two sets of optical components in the visual amplifying optical system may be respectively connected with a focal length adjusting mechanism for respectively adjusting the focal lengths of the two optical components; or two sets of optical components may be connected to one focal length adjusting mechanism. Achieve joint debugging. When each set of optical components is composed of two or more optical components, the focal length adjusting mechanism may be a gear mechanism, and the gear tooth adjusting mechanism converts the rotational motion into a linear motion of the optical component by changing the distance between the optical components. Changing the focal length of the optical system; and when each optical component consists of only one optical component, only the optical component has a focal length adjustable characteristic, and the focal length adjustment mechanism can be used for focus adjustment, for example: liquid lens, focal length adjustment mechanism The liquid lens applies a voltage or changes the shape of the liquid by mechanical force to achieve focal length adjustment. Since the focal length adjustment is relatively professional, the focal length adjustment mechanism can be designed as a gear position adjustment, and an ordinary user can ensure the display effect by adjusting the gear position.

The head-mounted display device of the present invention can be used for 3D movie viewing, 3D game scene display, etc., and has good sealing performance, does not affect people around, and is very suitable for people who wish to have personal space.

In the present application, the orientation terms "upper", "lower", "front", "back", "left", and "right" are all referred to by the user wearing the head mounted display device.

All of the features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner other than mutually exclusive features and/or steps.

Any feature disclosed in the specification, including any additional claims, abstract and drawings, may be replaced by other equivalents or alternative features, unless otherwise stated. That is, unless specifically stated, each feature is only one example of a series of equivalent or similar features and n.

The invention is not limited to the specific embodiments described above. The invention extends to any new feature or any new combination disclosed in this specification, as well as any novel method or process steps or any new combination disclosed.

Claims

A head mounted display device, comprising:

Eye mask,

Frame, and

Two sets of optical systems mounted in the frame, each set of optical systems having an image display screen, a planar mirror and a set of visual magnification optical components, each set of visual magnification optical components being a single positive focus lens or a positive focus lens group composed of a plurality of lenses,

Wherein, the eye shield is connected to the rear end of the frame, and two sets of visual magnification optical components are installed side by side at the connection position of the frame and the eyecup, and the optical path of each group of optical systems is: the image display The emitted light information is turned by the plane mirror and then visually magnified into the human eye.
The head-mounted display device according to claim 1, wherein two of the two sets of optical systems are mounted back to back in the center of the frame, and the two plane mirrors respectively correspond to the respective images. The display screen is mounted in the frame at an angle of 30 degrees to 60 degrees.
The head mounted display device according to claim 2, wherein the frame comprises a frame body bracket and a rear wall of the frame disposed at a front end of the frame body bracket, wherein the two image display screens are vertically disposed In the center of the frame body holder, two of the plane mirrors are vertically disposed on the rear wall of the frame.
The head-mounted display device according to claim 3, wherein a front end of the frame main body bracket is configured to be matched to an angular shape of the included angle, and the rear wall of the frame is also configured with a mirror matching angle The bending angle of the front end of the main body bracket is such that the frame has a convex front end.
The head-mounted display device according to claim 1, wherein two of the two sets of optical systems are respectively mounted on the left and right sides of the frame, and the two plane mirrors respectively correspond to the respective ones. The image display screen is mounted in the frame at an angle of 30 degrees to 60 degrees.
The head-mounted display device according to claim 5, wherein the frame is configured in a shell shape, and two image display screens are vertically disposed on both sides of the inner side wall of the frame, and the two plane mirrors are opposite each other Vertically disposed within the frame and between the two of the graphic displays.
The head-mounted display device according to claim 1, wherein two of said two sets of optical systems are mounted above or below said frame, and said two planar mirrors respectively correspond to said respective ones The image display screen is mounted in the frame at an angle of 30 degrees to 60 degrees.
A head mounted display device according to claim 7, wherein a center of the frame is provided with a partition piece for completely blocking an image seen by both eyes.
A head mounted display device according to claim 7, wherein said frame comprises a frame body holder and a frame a rear wall, wherein a front end of the frame body bracket has an inclination angle matching the angle, the frame rear wall matching the frame body bracket to attach the plane mirror to the frame On the wall.
A head mounted display device according to claim 7, wherein both of said image display screens are horizontally disposed.
A head-mounted display device according to claim 10, wherein the two image display screens are arranged side by side on the same horizontal plane.
A head mounted display device according to claim 11, wherein two of said image display screens are integrally formed.
A head mounted display device according to claim 1, wherein two sets of said optical systems are symmetrically arranged.
The head mounted display device according to any one of claims 1 to 13, further comprising a peripheral connection circuit, wherein the peripheral connection circuit is connected to an electronic device having a playback function by wire or wirelessly to obtain Information to be displayed.
The head mounted display device of claim 14 further comprising a diopter adjuster, said diopter adjuster being located at a proximal end of said visually magnifying optical component.
A head mounted display device according to claim 14, wherein a distance adjusting mechanism for adjusting a distance between the two optical components is provided between the two sets of the optical components in the visual a magnifying optical system .
A head mounted display device according to claim 14, wherein said visual magnification optical component is coupled to a focus adjustment mechanism for adjusting the focal length of the two optical components.
A head-mounted display device according to claim 14, further comprising a headband telescopic belt for contacting the human body and a buckle for fastening the head-mounted telescopic belt, the buckle being disposed at the Said on both sides of the frame.
A head-mounted display device according to claim 14, further comprising a headband telescopic belt for contacting the human body and a buckle for fastening the head-mounted telescopic belt, the buckle being disposed at the Above the eye mask.