JP6966480B2 - Head-mounted display and head-mounted display system - Google Patents

Description

The present invention relates to a transmissive head-mounted display and a head-mounted display system.

Patent Document 1 describes glasses with built-in personal information provided with a memory for storing personal information such as an ID code and an antenna or the like. The glasses with built-in personal information can communicate with an external device through an antenna. This antenna is arranged on the frame of the above-mentioned personal information-embedded eyeglasses.

Further, in recent years, a transmissive head-mounted display (hereinafter referred to as HMD), which is a spectacle type, has been developed. The HMD uses a technique called Augmented Reality (hereinafter referred to as AR) to add various information to the actual landscape visually recognized by the wearer wearing the head and display it.

Japanese Patent Gazette "Japanese Patent Laid-Open No. 11-353444 (published on December 24, 1999)"

The HMD communicates with an external device in order to obtain various information. Therefore, an antenna is required.

When the antenna is arranged on the frame as in the glasses with built-in personal information described in Patent Document 1, the area of the antenna becomes small because the arrangement space of the antenna is narrow, and the reception sensitivity cannot be improved. Further, if the area of the antenna is increased to the extent that it protrudes from the frame in order to improve the reception sensitivity, the appearance becomes poor and the design is deteriorated.

One aspect of the present invention is to improve the reception sensitivity while preventing the design of the head-mounted display from being deteriorated.

In order to solve the above problems, the head-mounted display according to one aspect of the present invention is a transmissive head-mounted display, which is a transparent display arranged in front of the wearer and a surface of the transparent display. It is characterized by having a transparent antenna arranged in.

According to one aspect of the present invention, it is possible to improve the reception sensitivity while preventing the design of the head-mounted display from being deteriorated.

(A) is a perspective view showing the structure of the HMD according to the first embodiment of the present invention, and (b) is a top view of the HMD shown in (a) as viewed from above. It is sectional drawing which shows the schematic structure of the display part of the HMD which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the schematic structure of the main part of the image display element which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the schematic structure of the main part of the transparent antenna which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the structure of the image display device which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the HMD system which concerns on Embodiment 2 of this invention. It is a functional block diagram which shows the structure of the HMD system which concerns on Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described in detail.

[Embodiment 1]
(Structure of HMD1)
FIG. 1A is a perspective view showing the configuration of the HMD (head-mounted display) 1 according to the first embodiment of the present invention, and FIG. 1B is a top view of the HMD1 shown in FIG. 1A as viewed from above. be.

In the following description, "left" or "right" refers to the left or right when viewed from the wearer wearing the HMD 1, unless otherwise specified.

As shown in FIG. 1, the HMD 1 is a transmissive HMD, and has a frame 2, an image display device 5 for the right eye, and an image display device 5 for the left eye. In this embodiment, the HMD1 is a spectacle type.

The frame 2 has a rim 4 and left and right temples 3. Each image display device 5 has a display unit 6 and a control unit 7. The frame 2 supports the display unit 6 and the control unit 7 when the HMD 1 is attached to the wearer.

The display unit 6 for the right eye and the display unit 6 for the left eye are fitted into the rim 4, respectively. That is, the rim 4 surrounds the edge of the display unit 6 for the right eye and the edge of the display unit 6 for the left eye.

The HMD 1 may be a goggle type having one image display device 5 instead of a spectacle type. In this case, one display unit 6 is fitted in the frame.

The two control units 7 are arranged in the temple 3 on the right side and the temple 3 on the left side. The control unit 7 arranged on the temple 3 on the right side controls the drive of the display unit 6 for the right eye. The control unit 7 arranged on the temple 3 on the left side controls the drive of the display unit 6 for the left eye.

The image display device 5 for the right eye and the image display device 5 for the left eye have the same structure. The image display devices 5 are synchronized with each other, and the same image on the left and right or the corresponding image on the left and right is displayed on each display unit 6. Further, the two image display devices 5 can be individually controlled. That is, the two image display devices 5 may display different images on the left and right.

FIG. 2 is a cross-sectional view showing a schematic configuration of a display unit 6 of the HMD 1 according to the first embodiment of the present invention.

As shown in FIG. 2, the display unit 6 has an image display element (transparent display) 30 and a transparent antenna 60 arranged in a plane on the surface of the image display element 30.

In addition, in this specification, "transparent" means that at least visible light is transmitted.

When the HMD 1 is attached to the wearer, the image display element 30 is on the side closer to the wearer and the transparent antenna 60 is on the side farther from the wearer among the image display element 30 and the transparent antenna 60.

The image display element 30 is a transparent display (see-through display) in which the display area of the image is transparent when the image is not displayed. When the HMD 1 is attached to the wearer, the image display element 30 for the right eye is arranged in front of the wearer's right eye, and the image display element 30 for the left eye is arranged in front of the wearer's left eye. Since each image display element 30 is transparent as described above, the wearer can visually recognize the outside world by the light transmitted through the image display element 30, and further, the display control unit 71 described later in FIG. 5 controls the display. By doing so, an image can be displayed and the wearer can visually recognize the image.

As the image display element used in the present invention, a display control unit displays the image in the image display area, such as a display in which an image is projected on the surface of the image display area by a prism or a hologram, or a transmissive liquid crystal display. Any type of image display element that can visually recognize the image and the real image (real landscape) through which the display area of the image is transmitted may be used. In the following description, as one aspect of the present invention, a case where a transmissive liquid crystal display is used as an image display element will be illustrated and described.

FIG. 3 is a cross-sectional view showing a schematic configuration of a main part of the image display element 30 according to the first embodiment of the present invention.

As an example, the image display element 30 is an active matrix type liquid crystal panel in which a liquid crystal layer LC is sandwiched between a pair of transparent substrates 10 and 20 facing each other.

For example, on one transparent substrate 10 (array substrate, drive circuit board), as an active matrix substrate, a plurality of TFTs (Thin Film Transistors) 12 (switching elements, transistors) and pixels are placed on an insulating substrate 11 such as glass. A TFT substrate on which an electrode 13 and a wiring, an alignment film, etc. (not shown) are formed is used. Further, as the other transparent substrate 20 (opposing substrate), a color filter substrate in which a common electrode 22 and a color filter, an alignment film, or the like (not shown) are formed on an insulating substrate 21 such as glass is used. Further, on the surfaces (outsides) of the transparent substrates 10 and 20 opposite to each other, polarizing plates and the like (not shown) are provided.

When displaying a monochrome image instead of a color image on the image display element 30, it is not necessary to arrange a color filter on the image display element 30.

FIG. 4 is a cross-sectional view showing a schematic configuration of a main part of the transparent antenna 60 according to the first embodiment of the present invention.

As shown in FIG. 4, the transparent antenna 60 is a transparent sheet-like member. The transparent antenna 60 includes a transparent adhesive layer 62, a transparent plastic sheet 63, a conductive portion 64, and a transparent cover layer 65, each of which is made of transparent materials laminated in order.

When the transparent antenna 60 is attached to the surface of the image display element 30, the release sheet 61 attached to one side of the transparent adhesive layer 62 (the side opposite to the side on which the transparent plastic sheet 63 is laminated) is peeled off, thereby peeling. , The exposed transparent adhesive layer 62 is attached to the surface of the image display element 30. The conductive portion 64 of the transparent antenna 60 may be directly formed on the surface of the image display element 30 by vapor deposition, etching, or the like. In this case, the transparent adhesive layer 62 and the release sheet 61 are unnecessary.

Since the transparent antenna 60 transmits high-frequency radio waves such as millimeter waves, it is necessary to optimize the directivity by an array antenna technique or the like in order to secure the flight distance of the radio waves. Further, the transparent antenna 60 has substantially uniform reception characteristics on a plane in all directions. By arranging two polarization array antennas whose polarization directions are orthogonal to each other on the surface of the image display element 30 on the same plane to form the transparent antenna 60, the transparent antenna 60 as a whole is the image display element 30. The reception characteristics on the surface of the can be made almost uniform in all directions.

FIG. 5 is a functional block diagram showing the configuration of the image display device 5 according to the first embodiment of the present invention.

As described above, the image display device 5 has a display unit 6, a control unit 7, and a wireless unit 8. The control unit 7 has a display control unit 71 and a storage unit 73.

The display control unit 71 controls the drive of the image display element 30. The display control unit 71 reads the image data input from the outside via the transparent antenna 60 and the radio unit 8 or the image data stored in the storage unit 73, and causes the image display element 30 to read the image data based on the image signal. Display the image.

The wireless unit 8 is a circuit that performs wireless communication using the transparent antenna 60. As the radio wave used for the radio communication performed by the radio unit 8, it is preferable to use a radio wave such as a millimeter wave whose directivity can be narrowed so as to have directivity in front of the image display element 30.

The storage unit 73 is composed of a RAM (Random Access Memory), a ROM (Read Only Memory), or other semiconductor memory. A program or the like used for various operations by the display control unit 71 is stored.

(Effect of HMD1)
As shown in FIGS. 1 and 2, in the HMD 1, the transparent antenna 60 is arranged in a plane on the surface of the image display element 30, which is a component having a relatively large area among the components of the HMD 1. Therefore, the area of the transparent antenna 60 can be increased as compared with the case where the antenna is arranged on the frame as in Patent Document 1. As a result, the HMD 1 can improve the reception sensitivity of the radio signal using the transparent antenna 60, and can stably perform wireless communication.

Since the transparent antenna 60 can secure a sufficient area for improving the reception sensitivity of the antenna, it is not necessary to increase the area to such an extent that the transparent antenna 60 protrudes from the image display element 30. Therefore, it is possible to prevent the design of the HMD 1 from being deteriorated in order to improve the reception sensitivity of the antenna. That is, the shape of the frame can be freely designed without depending on the shape of the antenna.

In addition, since the transparent antenna 60 arranged on the surface of the image display element 30 is transparent and is arranged in a plane, the wearer and the wearer can see that the antenna is arranged on the surface of the image display element 30. It is difficult for others to see. From this point as well, according to the HMD1, it is possible to prevent the design of the HMD1 from being deteriorated in order to improve the reception sensitivity of the antenna.

As described above, according to the HMD1, the reception sensitivity of the antenna can be improved while preventing the deterioration of the design of the HMD1. Therefore, according to HMD1, wireless communication can be performed with stable communication quality.

Further, the transparent antenna 60 is attached when the wearer attaches the HMD1 to the head among the two main surfaces of the image display element 30 (the two surfaces having the largest area among the surfaces of the image display element 30). It is placed on the outer surface opposite to the human eye. Therefore, the reception sensitivity can be improved as compared with the case where the transparent antenna 60 is arranged on the inner side surface of the two main surfaces of the image display element 30 which is the eye side of the wearer. In addition, when it is assumed that the transparent antenna 60 is used in an environment where sufficient radio wave strength is secured, the transparent antenna 60 is the inner surface of the two main surfaces of the image display element 30, which is the eye side of the wearer. It may be arranged in.

When the area of the transparent antenna 60 is smaller than the area of the image display element 30, the edge of the transparent antenna 60 is easily visible to the wearer or others, and the transparent antenna 60 is arranged on the surface of the image display element 30. It may be easier to see what is happening.

In this case, by making the areas of the transparent antenna 60 and the image display element 30 equal to each other, it becomes difficult to visually recognize that the transparent antenna 60 is arranged on the surface of the image display element 30. This makes it possible to prevent the design of the HMD1 from being deteriorated in order to improve the reception sensitivity of the antenna. When the edge of the transparent antenna 60 is difficult to see, the area of the transparent antenna 60 may be smaller or larger than that of the image display element 30.

Further, in the HMD 1, the radio wave used by the wireless unit 8 (see FIG. 5) for wireless communication using the transparent antenna 60 may be a millimeter wave used in the 5th generation mobile communication system (5G). In that case, HMD1 has the following advantages. That is, by using millimeter waves for wireless communication performed by HMD1, a large amount of information can be transmitted and received. Therefore, according to HMD1, high-quality and high-resolution images can be transmitted and received. The millimeter wave is a radio wave having a wavelength of 1 mm or more and 10 mm or less and a frequency of 30 GHz or more and 300 GHz or less.

Further, since the millimeter wave can travel straight with a narrow directivity, the wireless signal is not unnecessarily diffused and wireless communication can be performed rationally. That is, even if there are a plurality of HMD1s, or a plurality of transmitting devices or receiving devices that perform wireless communication with the HMD1, wireless communication is performed only between the HMD1 that requires wireless communication and the transmitting device or receiving device. This can be done, and it is possible to prevent the wireless communication from being mixed.

Here, for example, when a monopole antenna is placed on the temple of the frame, the wearer needs to turn his head so that the temple faces the transmitting device in order to receive radio waves having a narrow directivity such as millimeter waves. .. In this case, the wearer turns his / her line of sight in a direction different from that of the object of interest, which is inconvenient.

Further, if it is an adaptive array antenna instead of a monopole antenna, the wearer does not have to bother to point the temple in the direction in which the radio signal is transmitted, and it is possible to prevent the convenience from being deteriorated. .. However, the adaptive array antenna has a larger circuit scale than the monopole antenna. For this reason, it is necessary to arrange a larger circuit in the temple where the antenna is already arranged and the space is narrow, so that the temple of the HMD becomes large. For this reason, the usability of the HMD deteriorates, and the practicality deteriorates.

On the other hand, according to the HMD 1 according to one aspect of the present invention, since the transparent antenna 60 is arranged on the surface of the image display element 30, even if wireless communication is performed using a radio wave having a narrow directivity such as a millimeter wave, If the radio signal transmitting device received by the transparent antenna 60 or the radio signal receiving device transmitted by the transparent antenna 60 is arranged in the same direction as the object that the wearer is paying attention to, the direction seen by the wearer and the direction seen by the wearer. It can be matched with the direction of wireless communication.

Therefore, even in the case of wireless communication using radio waves with high directivity such as millimeter waves, unlike the case where the antenna is arranged in the temple as in Patent Document 2, the wearer is required to perform wireless communication. It is not necessary for the wearer to turn his / her face in a direction different from the desired direction, such as turning the temple in the direction of wireless communication.

As a result, it is possible to automatically perform wireless communication of information required by the wearer without making the wearer aware of it. As a result, the convenience of the wearer can be improved.

The target that the wearer pays attention to may be, for example, a blackboard in a school classroom, home appliances installed in a home, a stage in a theater, etc., and a transmission device on the blackboard, home appliances, or the stage, etc. Alternatively, it is conceivable to arrange a receiving device. This specific configuration will be described in the second embodiment.

Further, the wireless unit 8 which is a circuit for performing wireless communication via the transparent antenna 60 is arranged in the frame 2.

Here, in the HMD 1, since the transparent antenna 60 is arranged on the surface of the image display element 30 instead of the frame 2, the space for arranging the wireless unit 8 in the frame 2 is compared with the HMD in which the antenna is arranged in the frame. Will increase. Therefore, the degree of freedom in designing the circuit of the wireless unit 8 is increased as compared with the HMD in which the antenna and the circuit for wireless communication are arranged in the frame. As a result, the wireless unit 8 can be made into a circuit capable of large-capacity wireless communication such as high-resolution and high-quality images. This makes it possible to configure the HMD1 capable of large-capacity wireless communication.

[Embodiment 2]
The second embodiment of the present invention will be described mainly with reference to FIGS. 6 and 7 as follows. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the first embodiment, and the description thereof will be omitted.

FIG. 6 is a diagram showing the configuration of the HMD system (head-mounted display system) 90 according to the second embodiment of the present invention. FIG. 7 is a functional block diagram showing the configuration of the HMD system 90 according to the second embodiment of the present invention.

As shown in FIG. 6, the HMD system 90 includes an HMD 1, a first camera (imaging device) 91, a second camera (imaging device) 92, a video control unit 93, and a first transmitting device (transmitting device) 97. And a second transmitting device (transmitting device) 98. As shown in FIG. 7, the video control unit 93 includes a special effect creation unit 95 and a communication control unit 96.

FIG. 6 shows an example in which the HMD system 90 is used in a theater 80 such as a theater or a concert hall. In the present embodiment, a case where a play is performed in the theater 80 will be described.

The wearer 83 wearing the HMD 1 is a viewer who is watching a play performed on the stage 81, and is seated in the audience seat to watch the stage 81. That is, the wearer 83 faces the face wearing the HMD 1 toward the stage 81.

The first camera 91 and the second camera 92 are arranged on the stage 81 or above the stage 81. The first camera 91 and the second camera 92 are different parts from each other, such as the performer, the landscape, or the audience seats of the theater on the stage 81, and photograph the real world. The first camera 91 and the second camera 92 are connected to the video control unit 93 so as to be able to communicate with each other by wire or wirelessly, and output the captured video to the video control unit 93, respectively.

The number of cameras included in the HMD system 90 is not limited to two, and may be one or three or more.

The image control unit 93 may be arranged on the stage 81, above the stage 81, or outside the stage 81.

The special effects creating unit 95 generates additional information according to the images captured by the first camera 91 and the second camera 92. The additional information is, for example, subtitles, CG characters, and the like, which are information according to the play currently being performed on the stage 81. When the special effects creating unit 95 acquires the images captured by the first camera 91 and the second camera 92 as video data, the special effects creating unit 95 generates different additional information according to the acquired video data. Then, the special effect creation unit 95 transmits the generated additional information to the communication control unit 96.

The additional information may be stored in advance in the special effect creation unit 95 together with the information indicating the correspondence relationship with the video data acquired from the first camera 91 and the second camera 92, or the first camera 91 and the second camera 91 and the second camera 92. The special effect creation unit 95 may sequentially generate based on the video data acquired from the camera 92.

The communication control unit 96 outputs one (first additional information) of the two different types of additional information acquired from the special effect creation unit 95 to the first transmission device 97, and the other (second additional information) is second-transmitted. Output to device 98. The communication control unit 96 combines one of the two types of composite video (video with the first additional information) synthesized by adding the additional information to the video data acquired from the first camera 91 and the second camera 92. The output may be output to the first transmission device 97, and the other (video with the second additional information) may be output to the second transmission device 98.

The first additional information may be, for example, the subtitles of the play performed on the stage 81. The second additional information may be, for example, a CG character suitable for a play performed on the stage 81.

The first transmission device 97 and the second transmission device 98 are arranged on the stage 81 or above the stage 81. The first transmitting device 97 and the second transmitting device 98 are arranged apart from each other, and have antennas having different directivities from each other.

The case where each of the first transmitting device 97 and the second transmitting device 98 is a polarized wave array antenna having linearly polarized radiation characteristics and frontal directivity as an antenna for radio wave transmission will be described below as an example. ..

The first transmission device 97 superimposes information indicating the first additional information (or an image with the first additional information) acquired from the communication control unit 96 on the first millimeter wave M1 having a narrow directivity, and superimposes the information indicating the first additional information (or the image with the first additional information) on the audience as a wireless signal. Send to your seat. The second transmission device 98 superimposes information indicating the second additional information (or video with the second additional information) acquired from the communication control unit 96 on the second millimeter wave M2 having a narrow directivity, as a wireless signal. Send to the audience seats.

As described above, the HMD system 90 includes an HMD 1, a first transmission device 97 and a second transmission device 98 that transmit radio waves that can be received by the transparent antenna 60. Then, the first transmission device 97 and the second transmission device 98 each transmit a radio wave on which different additional information is superimposed to the HMD 1.

Therefore, the wearer 83 of the HMD 1 simply turns his face in the direction in which the transmission device for transmitting the additional information that the wearer 83 wants to see is arranged among the first transmission device 97 and the second transmission device 98. The additional information displayed on the image display element 30 can be switched to see the desired additional information.

In other words, the display unit 6 (see FIG. 2) displays each of the first transmission device 97 and the second transmission device 98, which are a plurality of transmission devices, for each transmission device to which the main surface of the image display element 30 is directed. Switch additional information.

This makes it possible to improve the convenience of the wearer.

In this way, the wearer can visually recognize the image on which the additional information is superimposed on the actual landscape through the display unit 6.

Therefore, it is preferable that the HMD system 90 is provided in a theater 80, such as a theater or a concert hall, where the viewer appreciates a play or performance performed on the stage. In such a theater 80, since the wearer 83 (viewer) wearing the HMD 1 faces the stage 81, the transparent antenna 60 (see FIG. 2) of the HMD 1 naturally faces the stage 81. Therefore, by arranging the first transmitting device 97 and the second transmitting device 98 on the stage 81 or above the stage 81, the directivity with the transparent antenna 60 matches, so that the wearer 83 can receive wireless communication. It is possible to provide an HMD system 90 capable of performing high-speed and large-capacity wireless communication with the HMD 1 without much awareness. As a result, the wearer 83 of the HMD 1 can appreciate the play or performance performed on the stage 81 by fusing the additional information such as subtitles.

In addition to the theater 80, the HMD system 90 may be arranged in, for example, a classroom or a home room.

When the HMD system 90 is arranged in the classroom, the first transmission device 97 and the second transmission device 98 may be arranged on the blackboard. Those who take classes in the classroom usually turn their faces to the blackboard, and can perform high-speed, large-capacity wireless communication with the HMD1 without making the wearer 83 wearing the HMD1 aware of it. It is possible.

As a result, for example, when the wearer 83 looks at the blackboard, the wearer 83 receives the radio signals from the first transmission device 97 and the second transmission device 98 on the HMD1 to display the text and the explanatory text on the HMD1. You can see it. Further, when the wearer 83 looks at the desk, that is, when the face is turned from the blackboard direction to the desk direction, the text and the explanation displayed on the HMD1 disappear, and the image is not displayed through the transparent HMD1. You can look at the notebook placed on the desk and write letters on the notebook.

Further, when the HMD system 90 is arranged in a home room, the first transmission device 97 and the second transmission device 98 may be arranged in different home appliances. When the wearer 83 wearing the HMD1 sees the home appliance in which the first transmission device 97 or the second transmission device 98 is arranged, the information based on the home appliance can be received by the HMD1. As a result, the wearer 83 can see the information about the home appliance displayed on the HMD 1 just by looking at the home appliance.

[Example of implementation by software]
The control block (particularly the display control unit 71) of the HMD 1 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or by software using a CPU (Central Processing Unit). You may.

In the latter case, the HMD 1 is a CPU that executes instructions of a program that is software that realizes each function, a ROM (Read Only Memory) or a storage device in which the program and various data are readablely recorded by a computer (or CPU). (These are referred to as "recording media"), RAM (Random Access Memory) for expanding the above program, and the like are provided. Then, the object of the present invention is achieved by the computer (or CPU) reading the program from the recording medium and executing the program. As the recording medium, a "non-temporary tangible medium", for example, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. It should be noted that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the above program is embodied by electronic transmission.

〔summary〕
The head-mounted display (HMD1) according to the first aspect of the present invention is a transmissive head-mounted display (HMD1), which is a transparent display (image display element 30) arranged in front of the wearer and the transparent display. It is characterized by having a transparent antenna (60) arranged on the surface of (image display element 30).

According to the above configuration, the transparent antenna is arranged in a plane on the surface of the transparent display, which is a component of the head-mounted display having a relatively large area, so that the transparent antenna is arranged in a frame as compared with the case where the transparent antenna is arranged in a frame. , The area can be increased. As a result, the reception sensitivity of the wireless signal can be improved, and stable wireless communication can be performed.

Further, in order to improve the reception sensitivity, it is not necessary to increase the area of the transparent antenna to such an extent that it protrudes from the transparent display. Therefore, it is possible to prevent the design of the head-mounted display from being deteriorated in order to improve the reception sensitivity.

In addition, since the antenna arranged on the surface of the transparent display is transparent and arranged in a plane, it is difficult to visually recognize that the antenna is arranged on the surface of the transparent display. From this point as well, it is possible to prevent the design of the head-mounted display from being deteriorated in order to improve the reception sensitivity.

As described above, according to the above configuration, it is possible to improve the reception sensitivity while preventing the design of the head-mounted display from being deteriorated.

In the head-mounted display (HMD1) according to the second aspect of the present invention, the transparent antenna (60) and the transparent display (image display element 30) may have the same area in the first aspect. With the above configuration, it becomes difficult to visually recognize that the transparent antenna is arranged on the surface of the transparent display. Therefore, it is possible to prevent the design of the head-mounted display from being deteriorated in order to improve the reception sensitivity.

In the head-mounted display (HMD1) according to the third aspect of the present invention, the radio wave transmitted and received by the transparent antenna (60) in the first or second aspect may be millimeter waves.

According to the above configuration, even if the radio wave has a narrow directivity such as millimeter waves, the wireless signal transmitting device received by the transparent antenna or the wireless signal receiving device transmitted by the transparent antenna in the direction seen by the wearer. By arranging, the direction in which the wearer sees and the direction in which wireless communication is performed can be matched.

Therefore, even when wireless communication is performed using radio waves with narrow directivity such as millimeter waves, the temple is wirelessly communicated to the wearer in order to perform wireless communication, unlike the case where the antenna is arranged on the temple. It is not necessary for the wearer to turn his / her face in a direction different from the desired direction, such as turning the face in a direction.

As a result, it is possible to automatically perform wireless communication of information required by the wearer without making the wearer aware of it. As a result, the convenience of the wearer can be improved.

The head-mounted display (HMD1) according to the fourth aspect of the present invention wirelessly relates to the frame (2) supporting the transparent display (image display element 30) and the transparent antenna (60) in the first to third aspects. It is a circuit that performs communication, and may include a radio unit (8) arranged in the frame (2).

According to the above configuration, since the transparent antenna is arranged not in the frame but in the transparent display, the space for arranging the wireless unit, which is a circuit for performing wireless communication via the transparent antenna, in the frame is increased. Increases the degree of freedom in circuit design. As a result, the radio unit can be a circuit capable of receiving or transmitting a large-capacity radio signal such as a high-resolution and high-quality image at high speed. This makes it possible to configure a head-mounted display capable of large-capacity wireless communication.

The head-mounted display system (HMD system 90) according to the fifth aspect of the present invention transmits radio waves receivable by the head-mounted display (HMD1) and the transparent antenna (60) in the first to fourth aspects 1 Alternatively, a plurality of transmission devices (first transmission device 97, second transmission device 98) may be provided. With the above configuration, the wearer can stably perform wireless communication capable of obtaining desired information by turning his / her face in the direction in which the transmitting device for transmitting the required information is arranged.

In the head-mounted display system (HMD system 90) according to the sixth aspect of the present invention, in the fifth aspect, the plurality of transmission devices (first transmission device 97, second transmission device 98) have different information (additional information (first transmission device 98). The radio wave on which the 1 additional information and the 2nd additional information)) are superimposed may be transmitted.

In the head-mounted display system (HMD system 90) according to the seventh aspect of the present invention, in the fifth or sixth aspect, the transparent display (image display element 30) is the plurality of transmission devices (first transmission device 97, second). Of the transmission devices 98), the information to be displayed may be switched for each transmission device to which the main surface is directed.

With the above configuration, the wearer can switch the image displayed on the transparent display by turning his / her face in the direction in which the transmitting device for transmitting the required information is arranged. This makes it possible to improve the convenience of the wearer.

In the head-mounted display (HMD1) according to another aspect of the present invention, in the above aspect 1, the transparent antenna (60) is the wearer's of the two main surfaces of the transparent display (image display element 30). It is preferably arranged on the outer surface opposite to the eyes. According to the above configuration, the reception sensitivity can be improved as compared with the case where the transparent antenna is arranged on the inner side surface of the transparent display on the wearer side.

The head-mounted display according to each aspect of the present invention may be realized by a computer, and in this case, the head-mounted display is made into a computer by operating the computer as each part (software element) included in the head-mounted display. The display control program of the head-mounted display and the computer-readable recording medium on which the display control program is recorded are also included in the scope of the present invention.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Further, by combining the technical means disclosed in each embodiment, new technical features can be formed.

1 HMD (Head Mounted Display)
2 Frame 3 Temple 5 Image display device 6 Display unit 7 Control unit 30 Image display element (transparent display)
60 Transparent antenna 71 Display control unit 8 Wireless unit 83 Wearer 90 HMD system (head-mounted display system)
91 First camera (imaging device)
92 Second camera (imaging device)
93 Video control unit 95 Special effect creation unit 96 Communication control unit 97 First transmitter (transmitter)
98 Second transmitter (transmitter)

Claims (8)

It is a transmissive head-mounted display.
A transparent display placed in front of the wearer and
With a flat transparent antenna placed on the surface of the transparent display ,
The transparent antenna is a head-mounted display comprising two polarization array antennas whose polarization directions are orthogonal to each other, and is arranged on a surface of the transparent display on a side far from the wearer. The head-mounted display according to claim 1, wherein the transparent antenna and the transparent display have the same area. The head-mounted display according to claim 1 or 2, wherein the radio waves transmitted and received by the transparent antenna are millimeter waves. The frame that supports the transparent display and
The head-mounted display according to any one of claims 1 to 3, which is a circuit that performs wireless communication via the transparent antenna and includes a wireless unit arranged in the frame. The head-mounted display according to any one of claims 1 to 4,
A head-mounted display system including one or a plurality of transmission devices that transmit radio waves that can be received by the transparent antenna. The head-mounted display system according to claim 5, wherein the plurality of transmitting devices transmit radio waves on which different information is superimposed. The head-mounted display system according to claim 5 or 6, wherein the transparent display switches information to be displayed for each transmission device to which the main surface is directed among the plurality of transmission devices. It is a transmissive head-mounted display.
A transparent display placed in front of the wearer and
A sheet-shaped transparent antenna arranged flat on the surface of the transparent display is provided .
The sheet-shaped transparent antenna is a head-mounted display comprising two polarization array antennas whose polarization directions are orthogonal to each other, and is arranged on a surface of the transparent display on a side far from the wearer.

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