Source: https://patents.google.com/patent/JP6060512B2/en
Timestamp: 2020-02-17 11:33:53
Document Index: 643887702

Matched Legal Cases: ['art 272', 'art 60', 'art 272', 'art 262', 'art 272', 'art 272', 'art 271', 'art 272', 'art 271', 'art 272', 'art 271', 'art 272', 'art 271', 'art 272', 'art 271', 'art 272', 'art 271', 'art 272', 'art 271', 'art 271', 'art 272', 'art 272', 'art 271', 'art 320', 'art 330', 'art 310', 'art 320', 'art, 12', 'art, 14', 'art, 21', 'art, 22', 'art, 24', 'art, 26', 'art, 28', 'art, 311', 'art, 312', 'art, 330']

JP6060512B2 - Head-mounted display device - Google Patents
JP6060512B2
JP6060512B2 JP2012083634A JP2012083634A JP6060512B2 JP 6060512 B2 JP6060512 B2 JP 6060512B2 JP 2012083634 A JP2012083634 A JP 2012083634A JP 2012083634 A JP2012083634 A JP 2012083634A JP 6060512 B2 JP6060512 B2 JP 6060512B2
JP2012083634A
JP2013214856A (en
JP2013214856A5 (en
2012-04-02 Application filed by セイコーエプソン株式会社 filed Critical セイコーエプソン株式会社
2012-04-02 Priority to JP2012083634A priority Critical patent/JP6060512B2/en
2013-10-17 Publication of JP2013214856A publication Critical patent/JP2013214856A/en
2015-05-07 Publication of JP2013214856A5 publication Critical patent/JP2013214856A5/ja
2017-01-18 Publication of JP6060512B2 publication Critical patent/JP6060512B2/en
In a conventional see-through head-mounted display device, an external image always appears behind the virtual image, so when operating an object in the virtual image or gazing at characters or images in the virtual image, the external environment There was a problem that the image was obstructive and it was difficult to see the virtual image.
The present invention has been made in view of such problems. According to some aspects of the present invention, it is possible to provide a head-mounted display device capable of easily viewing a virtual image superimposed on an external image.
(1) The present invention is a head-mounted display device that allows a user to visually recognize a virtual image in a state of being mounted on a user's head, and includes an image light generation unit that generates image light representing an image, and an external environment A light-blocking unit that transmits light at a given transmittance; and a virtual image forming unit that transmits external light transmitted through the light-blocking unit and forms the virtual image on the user's eyes by the image light. An image display unit configured to be able to visually recognize the virtual image and the external image, an operation unit for a user to input operation data, and the transmittance of the light shielding unit based on the operation data from the operation unit And a control unit that performs control to change.
According to the present invention, the light shielding unit is controlled by changing the transmittance of the light shielding unit that transmits external light (external light representing an external field image) with a given transmittance based on operation data from the operation unit. It is possible to make it easier to visually recognize the virtual image superimposed on the external image by performing an operation to reduce the transmittance of the light, and to make it easy to visually recognize the external image by increasing the transmittance of the light shielding portion. .
(2) The present invention is a head-mounted display device that allows a user to visually recognize a virtual image in a state of being mounted on the user's head, and includes an image light generating unit that generates image light representing an image, and an external environment A light-blocking unit that transmits light at a given transmittance; and a virtual image forming unit that transmits external light transmitted through the light-blocking unit and forms the virtual image on the user's eyes by the image light. Includes an image display unit configured to be able to visually recognize the virtual image and an external image, a detection unit provided in the image display unit for detecting movement of a user's head, and detection data detected by the detection unit. And a control unit that performs control to change the transmittance of the light shielding unit.
According to the present invention, based on the detection data detected by the detection unit, by performing control to change the transmittance of the light shielding unit that transmits external light at a given transmittance, according to the detection data, It becomes possible to make it easy to visually recognize a virtual image superimposed on the external image by decreasing the transmittance, or to make the external image easy to visually recognize by increasing the transmittance of the light shielding portion according to the detection data.
(3) In this head-mounted display device, the control unit may independently control the transmittance of the first region of the light-shielding unit and the transmittance of regions other than the first region. .
According to the present invention, by controlling the transmittance of the first region of the light-shielding portion and the transmittance of the region other than the first region independently of each other, it is possible to partially visually recognize the virtual image, It becomes possible to make it easy to partially visually recognize an external field image.
(4) In this head-mounted display device, the control unit may perform control to change at least one of the size and position of the first region.
According to the present invention, it is possible to change a part that makes it easy to visually recognize a virtual image and a part that makes it easy to visually recognize an external image.
1 is an external view showing an example of the configuration of a head-mounted display device according to an embodiment. The functional block diagram which shows the structure of the head mounted display apparatus which concerns on this embodiment functionally. The figure which shows the structure of the optical system of an image display part. FIGS. 4A and 4B are explanatory diagrams illustrating an example of a virtual image and an external image visually recognized by the user, and an example of setting the transmittance of the left light shielding unit and the right light shielding unit. FIGS. 5A and 5B are explanatory diagrams illustrating an example of a virtual image and an external image visually recognized by the user, and an example of setting the transmittance of the left light shielding unit and the right light shielding unit. 6A and 6B are explanatory diagrams illustrating an example of a virtual image and an external image visually recognized by the user, and an example of setting of the transmittance of the left light shielding unit and the right light shielding unit. 7A and 7B are diagrams for describing a modification. FIG. 8A and FIG. 8B are diagrams for describing a modification. The figure for demonstrating a modification.
FIG. 1 is an external view showing an example of the configuration of the head-mounted display device according to the present embodiment.
The image display unit 20 is a mounting body that is mounted on the user's head, and has a glasses shape in the present embodiment. The image display unit 20 includes an ear hook unit 21, a right display drive unit 22, a left display drive unit 24, a right optical image display unit 26, and a left optical image display unit 28. Further, the image display unit 20 is provided with a detection unit 60 (sensor) that detects the movement (impact or displacement) of the user's head. The ear hook portion 21 is a member provided so as to cross over the user's ear from the end portions of the right display drive portion 22 and the left display drive portion 24, and functions as a temple. The right optical image display unit 26 and the left optical image display unit 28 are disposed so as to be positioned in front of the right and left eyes of the user, respectively, when the user wears the image display unit 20. The right display driving unit 22 is disposed at a connection location between the right ear hooking unit 21 and the right optical image display unit 26. Further, the left display driving unit 24 is disposed at a connection portion between the left ear hooking unit 21 and the left optical image display unit 28. Hereinafter, the right display drive unit 22 and the left display drive unit 24 are collectively referred to simply as “display drive unit”, and the right optical image display unit 26 and the left optical image display unit 28 are simply referred to as “optical image”. It is called a “display unit”.
The display drive unit includes a drive circuit (not shown), an LCD (liquid crystal display), a projection optical system, and the like. The optical image display unit includes a light shielding unit (not shown), a light guide plate, and a light control plate. The light shielding unit is configured by a liquid crystal shutter, and is disposed so as to cover at least a part of the front side (the side opposite to the user's eye side) of the image display unit 20, and transmits external light with a given transmittance. Let By adjusting the light transmittance of the light shielding portion, the amount of external light entering the user's eyes can be adjusted, and the ease of visual recognition of the virtual image can be adjusted. The light guide plate is formed of a light-transmitting resin material or the like, and transmits the external light transmitted through the light shielding portion and emits the image light taken from the display driving portion toward the user's eyes.
The control unit 10 is a device for supplying power to the head-mounted display device 100 and controlling the image display unit 20. The control unit 10 includes a lighting unit 12, a touch pad 14, a cross key 16, and a power switch 18. The lighting unit 12 notifies the operation state of the image display unit 20 (for example, the power ON / OFF state) according to the light emission state. As the lighting unit 12, a light source such as an LED can be used. The touch pad 14 detects the operation of the user's finger on the operation surface of the touch pad 14 and outputs a signal (operation data) corresponding to the detected content. The cross key 16 detects a pressing operation on a key corresponding to the up / down / left / right directions, and outputs a signal (operation data) corresponding to the detected content. The power switch 18 switches the power-on state of the head-mounted display device 100 by detecting a slide operation of the switch.
The CPU 140 provides a function as an operating system (OS) 150 by executing a program installed in advance. The CPU 140 also functions as an image processing unit 160, a sound processing unit 170, a display control unit 190, and a light shielding control unit 192 by developing firmware and computer programs stored in a ROM and a hard disk in the RAM and executing them. To do.
The image processing unit 160 transmits the generated clock signal, vertical synchronization signal, horizontal synchronization signal, and image data stored in the DRAM in the storage unit 120 via the transmission units 51 and 52, respectively. The image data transmitted through the transmission unit 51 is referred to as “right eye image data”, and the image data transmitted through the transmission unit 52 is referred to as “left eye image data”. The transmission units 51 and 52 function as a transceiver for serial transmission between the control unit 10 and the image display unit 20. The image processing unit 160 generates images according to the processing results of various applications installed in the OS 150, and transmits the generated images as right-eye image data and left-eye image data via the transmission units 51 and 52, respectively. May be.
The light shielding control unit 192 generates control signals for controlling the right light shielding unit 271 and the left light shielding unit 272 and transmits the generated control signals via the connection unit 40, respectively. Specifically, the light shielding control unit 192 controls the driving of the right light shielding unit 271 and the driving of the left light shielding unit 272 based on the operation data from the operation unit 110 or the detection data from the detection unit 60, and the right light shielding unit 192. Control to change the transmittance of the unit 271 and the left light shielding unit 272 is performed. Further, the light shielding control unit 192 may independently control the transmittance of the first region of the right light shielding unit 271 and the left light shielding unit 272 and the transmittance of the region other than the first region. Further, the light shielding control unit 192 may independently control the transmittance of the first region of the right light shielding unit 271 and the left light shielding unit 272 and the transmittance of the region other than the first region. Further, the light shielding control unit 192 is based on the operation data from the operation unit 110 or the detection data from the detection unit 60, and at least one of the size and the position of the first region of the right light shielding unit 271 and the left light shielding unit 272. You may perform control which changes.
The image display unit 20 includes a right display drive unit 22, a left display drive unit 24, a right light guide plate 261 and a right light shielding unit 271 that form the right optical image display unit 26, and a left that forms the left optical image display unit 28. The light guide plate 262 and the left light shielding part 272, the detection part 60, the right earphone 32, and the left earphone 34 are provided.
The receiving unit 53 functions as a receiver for serial transmission between the control unit 10 and the image display unit 20. The right backlight control unit 201 has a function of driving the right backlight 221 based on the input control signal. The right backlight 221 is a light emitter such as an LED or electroluminescence (EL). The right LCD control unit 211 has a function of driving the right LCD 241 based on the clock signal, the vertical synchronization signal, the horizontal synchronization signal, and the right eye image data input via the reception unit 53. The right LCD 241 is a transmissive liquid crystal panel in which a plurality of pixels are arranged in a matrix. The image light generator is irradiated from the right backlight 221 by driving the liquid crystal corresponding to each pixel position arranged in a matrix of the right LCD 241 to change the transmittance of the light transmitted through the right LCD 241. The illumination light is modulated into effective image light representing an image. Note that the image light generation unit of the present embodiment employs a backlight method, but may be configured to generate image light using a front light method or a reflection method. The right projection optical system 251 is configured by a collimator lens that converts image light emitted from the right LCD into a light beam in a parallel state.
The right light guide plate 261 (virtual image forming unit) transmits the external light transmitted through the right light shielding unit 271 and reflects the image light emitted from the right projection optical system 251 along a predetermined optical path. Guide to the right eye RE. The right light-shielding portion 271 is configured by a transmissive liquid crystal panel (liquid crystal shutter) having electrodes arranged in each region or electrodes arranged in a matrix. The right light-shielding unit 271 is driven by a drive unit (not shown) based on a control signal from the light-shielding control unit 192, and transmits external light at a transmittance (any transmittance of 0 to 100%) controlled by the light-shielding control unit 192. To do.
The left display driving unit 24 includes a receiving unit (Rx) 54, a left backlight (BL) control unit 202 and a left backlight 222 that function as light sources, a left LCD control unit 212 and a left LCD 242 that function as display elements, And a left projection optical system 252. The left backlight control unit 202, the left LCD control unit 212, the left backlight 222, and the left LCD 242 are collectively referred to as “image light generation unit”. The left projection optical system 252 and the left light guide plate 262 are collectively referred to as “light guide unit” (an example of a virtual image forming unit). The right display driving unit 22 and the left display driving unit 24 are paired, and each unit of the left display driving unit 24 has the same configuration and function as each unit described in the right display driving unit 22, and thus detailed description thereof. Is omitted.
The left light guide plate 262 (virtual image forming unit) transmits the external light transmitted through the left light shielding unit 272, and reflects the image light emitted from the left projection optical system 252 along a predetermined optical path. Lead to the left eye LE. The left light-shielding unit 272 has the same configuration as the right light-shielding unit 271, is driven by a drive unit (not shown) based on a control signal from the light-shielding control unit 192, and has a transmittance (0% to 0%) controlled by the light-shielding control unit 192. Transmits ambient light at a transmittance of 100%.
The detection unit 60 detects the movement (impact or displacement) of the user's head, and outputs detection data to the light shielding control unit 192 via the connection unit 40. The detection unit 60 includes at least one inertial sensor such as an acceleration sensor that detects acceleration and an angular velocity sensor (gyro sensor) that detects angular velocity. For example, the detection unit 60 may be configured by only an acceleration sensor, or the detection unit 60 may be configured by combining an acceleration sensor and an angular velocity sensor.
FIG. 3 is a diagram illustrating the configuration of the optical system of the image display unit 20. In the following, the left optical system of the image display unit 20 will be described, and detailed description of the right optical system having a configuration that is symmetrical to the left optical system will be omitted.
The left optical system of the image display unit 20 includes a left display driving unit 24, a left light guide plate 262, and a left light shielding unit 272. The left backlight 222 provided in the left display drive unit 24 includes a light source 222a and a backlight light guide unit 222b that diffuses light from the light source 222a into a light beam having a rectangular cross section. The left LCD 242 spatially modulates illumination light from the left backlight 222 to form image light. The left projection optical system 252 is composed of a projection lens group, and projects the image light emitted from the left LCD 242 into a parallel light flux.
The left light guide plate 262 includes a reflective portion 262a. The reflection unit 262a reflects the image light and transmits the external light transmitted through the first region A1 of the left light shielding unit 272, and combines the image light and the external light transmitted through the first region A1. The left light guide plate 262 projects the image light emitted from the left projection optical system 252 onto a predetermined surface (semi-transmissive reflection surface) 262b of a triangular prism included in the reflection unit 262a. Here, a half mirror layer is formed on the side facing the user's left eye LE when worn, out of the front and back of the transflective surface 262b formed on the reflective portion 262a. A part of the image light projected on the semi-transmissive reflective surface 262b formed on the reflective portion 262a is reflected by the semi-transmissive reflective surface 262b toward the left eye LE of the user, and this reflected light (image light GL). Forms a virtual image on the retina of the left eye LE of the user.
The left light-shielding portion 272 is provided so as to cover a part of the front side of the left light guide plate 262 (the side opposite to the user's left eye LE side), and the user's left eye LE according to the transmittance thereof. Transmits ambient light incident on the. The first area A1 of the left light-shielding part 272 is an area that transmits external light combined with image light in the reflection part 262a. The second area A2 of the left light-shielding part 272 (an area other than the first area A1) ) Is an area through which external light that is not combined with image light is transmitted in the reflection unit 262a.
Of the outside light, the outside light GL ′ that has passed through the first region A1 of the left light-shielding portion 272 passes through the semi-transmissive reflection surface 262b and is guided to the left eye LE of the user. As a result, the user observes a superposition of the virtual image formed by the image light GL and the external image formed by the external light GL ′ transmitted through the first region A1. On the other hand, of the external light, the external light transmitted through the second region A2 of the left light-shielding portion 272 does not pass through the region that reflects the image light in the semi-transmissive reflective surface 262b, but the region of the left light guide plate 262. A part of the area is transmitted to the left eye LE of the user. Accordingly, the user observes an external image formed by external light transmitted through the second region A2 around the virtual image formed by the image light GL.
The head-mounted display device 100 according to the present embodiment is configured to control the transmittance of the first area A1 and the transmittance of the second area A2 of the left light-shielding portion 272 independently of each other. That is, it is possible to perform control for independently dimming the external light GL ′ transmitted through the first region A1 and the external light transmitted through the second region A2. Thereby, the visibility of the external image superimposed on the virtual image (that is, the visibility of the virtual image superimposed on the external image) and the visibility of the external image not superimposed on the virtual image are made independent. Can be adjusted.
FIG. 4A is an explanatory diagram illustrating an example of a virtual image and an external image visually recognized by the user. FIG. 4B is a diagram illustrating an example of setting the transmittance of the left light shielding unit 272 (and the right light shielding unit 271). As described above, the image light GL guided to both eyes of the user wearing the head-mounted display device 100 forms an image on the retina of both eyes of the user, so that the user visually recognizes the virtual image. be able to. As shown in FIG. 4A, a virtual image VI is displayed in the visual field VR of the user of the head-mounted display device 100.
Here, as shown in FIG. 4B, when the transmittances T of the area A1 and the area A2 of the left light shielding part 272 (and the right light shielding part 271) are both set (controlled) to 100%, As shown in FIG. 4A, for the portion of the visual field VR where the virtual image VI is displayed, the external scene SC (the external image formed by the external light GL ′ transmitted through the first region A1 is behind the virtual image VI. ) And the outside scene SC (the outside image formed by the outside light GL ′ that has passed through the second region A2) can be seen in areas other than the portion where the virtual image VI is displayed. In the case shown in FIG. 4 (A), the outside scene SC can be easily seen, so that the user can check the surrounding situation, and even when a moving image is displayed as a virtual image VI, the user is intoxicated. Can be prevented.
Further, as shown in FIG. 5B, the transmittance T of the area A1 of the left light shielding part 272 (and the right light shielding part 271) is set to 0%, and the transmittance T of the area A2 is set to 100%. In this case, since the external light is blocked in the first region A1, as shown in FIG. 5A, the portion of the visual field VR where the virtual image VI is displayed cannot be seen through. Only outside the portion where the virtual image VI is displayed, the outside scene SC (the outside image formed by the outside light GL ′ transmitted through the second region A2) can be seen. In the case shown in FIG. 5A, it is possible to make the virtual image VI easily visible while ensuring a visual field with respect to the surroundings.
In addition, as shown in FIG. 6B, when the transmittances T of the area A1 and the area A2 of the left light shielding part 272 (and the right light shielding part 271) are both set to 0%, the first area A1. Since the external light is blocked in the second area A2, as shown in FIG. 6 (A), in the portion where the virtual image VI in the visual field VR is displayed, the external scene SC is not seen through, and the virtual image VI The outside scene SC can no longer be seen in areas other than where the is displayed. In the case shown in FIG. 6A, since only the virtual image VI is displayed in the visual field VR, the user can easily feel immersive.
In the head-mounted display device 100 of the present embodiment, the user can change the transmittance of the left light shielding unit 272 and the right light shielding unit 271 by operating the operation unit 110. For example, when the outside scene SC visible behind the virtual image VI is in the way, an operation for setting the transmittances of the left light shielding part 272 and the right light shielding part 271 as shown in FIG. 5B or FIG. 6B. In order to make the virtual image VI easier to see and to check the surrounding situation or to watch a moving motion video, the transmittance of the left light shielding part 272 and the right light shielding part 271 is shown in FIG. An operation for setting as shown in FIG. 5B can be performed to make it easy to see the outside scene SC.
Further, the light shielding control unit 192 may perform control to change the transmittance of the left light shielding unit 272 and the right light shielding unit 271 according to the type of application activated by the user operating the operation unit 110. . For example, when an application (for example, an application for moving image playback) that displays content that does not disturb the outside scene SC that is visible behind the virtual scene VI is activated, the left light shielding unit 272 and the right light shielding unit 271 Control is performed to set the transmittance as shown in FIG. In addition, when an application (for example, an application that displays a still image or text or an application that operates on a display object) that displays content that hinders the outside scene SC that is visible behind the virtual image VI is started up In addition, control is performed to set the transmittances of the left light shielding part 272 and the right light shielding part 271 as shown in FIG. 5B or FIG. 6B.
Further, the light shielding control unit 192 may perform control to change the transmittance of the left light shielding unit 272 and the right light shielding unit 271 based on the detection data from the detection unit 60. For example, when it is determined that the user's head has moved (or the head has rotated) based on the detection data from the detection unit 60, the user responds to a stimulus from the outside world other than the virtual image VI. In this case, the transmittances of the left light shielding part 272 and the right light shielding part 271 are set as shown in FIG. 4B or FIG. 5B. Then, control is performed to make the outside scene SC easier to see.
In addition, since the user is considered to be concentrated on the virtual image VI when any operation on the operation unit 110 is performed, the light-shielding control unit 192 in this case, the left light-shielding unit 272 and the right light-shielding unit 271. As shown in FIG. 5B or FIG. 6B, control for making the virtual image VI easy to see may be performed.
Moreover, although the said embodiment demonstrated the case where a transmissive liquid crystal panel (liquid crystal shutter) was used as a light-shielding part (the right light-shielding part 271 and the left light-shielding part 272), this invention is not limited to this. Any light shielding unit may be used as long as it can block light using mechanical means or optical means. For example, the light shielding portion may be composed of an electrochromic element.
In the above embodiment, the first region A1 of the light shielding unit is a region that transmits external light combined with the image light in the reflection unit 262a, and the second region A2 of the light shielding unit (other than the first region A1). Has been described as a region that transmits external light that is not combined with image light in the reflecting portion 262a. However, the present invention is not limited to this, and the first region A1 of the light shielding portion has an arbitrary size. And it is good also as a field of position. For example, the first region A1 of the light shielding unit may be a region that transmits at least part of the external light combined with the image light in the reflection unit 262a. Moreover, you may comprise so that at least one of the magnitude | size and position of 1st area | region A1 and 2nd area | region A1 of a light-shielding part can be changed.
For example, when the head-mounted display device 100 according to the present invention is used as a device for displaying subtitles for movie watching in a movie theater, as shown in FIG. A subtitle is displayed as a virtual image VI below the virtual image display area AI (area where a virtual image can be displayed). The user can see the caption as the virtual image VI while viewing the video screen SR as the external image SC. At this time, as shown in FIG. 7B, the first area A1 of the left light-shielding part 272 (and the right light-shielding part 271) corresponds to the area where the caption is displayed as the virtual image VI in the virtual image display area AI. The transmittance T of the first area A1 is set to 0% (or 0% ≦ T <100%), and the transmittance T of the second area A2 (area other than the first area A1) is set to 100%. By doing so, it is possible to visually recognize most of the video screen SR that is the external image SC while making it easy to visually recognize the caption (virtual image VI) superimposed on the video screen SR. Further, when the video screen SR visually recognized as the external image SC and the subtitle (virtual image VI) are overlapped as shown in FIG. 7A, the first as shown in FIG. 7B. When the transmittance T of the area A1 is reduced and the video screen SR viewed as the external image SC and the subtitle (virtual image VI) are not overlapped as shown in FIG. Control may be performed so that the transmittance T of the first region A1 is 100% (or the size of the first region A1 is 0) as shown in FIG. For example, the image display unit 20 is provided with an imaging unit (camera) that captures the direction of the user's visual field, and the light-shielding control unit 192 includes the position of the video screen SR in the captured image output from the imaging unit ( In addition, it may be determined whether the caption (virtual image VI) and the video screen SR overlap in the user's visual field VR. Further, the positional relationship may be determined based on detection data from the detection unit 60.
In the above embodiment, the image light generation unit is configured by a liquid crystal panel and a backlight, and the generated image light is configured to be guided to the user's eyes by the light guide plate. It is not limited to this. For example, as shown in FIG. 9, the image display unit 20 includes a light emitting unit 310 that forms signal light and emits the signal light as scanning light SL, and an object that receives the scanning light SL and forms image light PL. You may comprise with the virtual image formation part 320 which is an irradiation member, and the light-shielding part 330. FIG. As shown in FIG. 9, the light emission part 310 is arrange | positioned around a user's nose NS, and the virtual image formation part 320 is arrange | positioned so that the front of a user's eyes RE may be covered. The light shielding unit 330 is provided so as to cover a part of the front side of the virtual image forming unit 320. The light emitting unit 310 includes a signal light modulating unit 311 that forms signal light modulated in accordance with an image, a scanning optical system 312 that performs two-dimensional scanning in the virtual image forming unit 320 using the signal light as scanning light SL, and not illustrated. A drive control circuit is included. The signal light modulation unit 311 includes, for example, three light sources that generate red, blue, and yellow color lights and a dichroic mirror that combines the color lights to form signal light. The scanning optical system 312 includes, for example, , Composed of MEMS mirrors. The virtual image forming unit 320 is a half mirror that includes a transflective film on a transparent substrate. The virtual image forming unit 320 receives the scanning light SL emitted from the scanning optical system 312 and reflects this to form a virtual image. , Let the user visually recognize. The virtual image forming unit 320 is configured not only to form a virtual image but also to transmit the external light OL transmitted through the light shielding unit 330 so that the user can view the virtual image and the external image simultaneously.
In addition, a reflective volume hologram is provided in each of the light incident part that causes the image light to enter the light guide part and the light emitting part that emits the image light guided by the light guide part to diffract and reflect the image light. You may comprise as follows.
DESCRIPTION OF SYMBOLS 10 Control part, 12 Lighting part, 14 Touch pad, 16 Cross key, 18 Power switch, 20 Image display part, 21 Ear hook part, 22 Right display drive part, 24 Left display drive part, 26 Right optical image display part, 28 Left optical image display unit, 32 right earphone, 34 left earphone, 40 connection unit, 42 right cord, 44 left cord, 46 connecting member, 48 body cord, 51, 52 transmission unit, 53, 54 reception unit, 60 detection unit, 100 head-mounted display device, 110 operation unit, 120 storage unit, 130 power supply, 160 image processing unit, 170 sound processing unit, 180 interface, 190 display control unit, 192 shading control unit (control unit), 201 right backlight Control unit, 202 Left backlight control unit, 211 Right LCD control unit, 212 Left LCD control unit, 221 Right backlight 222 Left backlight, 241 Right LCD, 242 Left LCD, 251 Right projection optical system, 252 Left projection optical system, 261 Right light guide plate (virtual image forming portion), 262 Left light guide plate (virtual image forming portion), 262a Reflector, 262b transflective surface, 271 right light shielding part (light shielding part), 272 left light shielding part (light shielding part), 310 light emitting part, 311 signal light modulating part, 312 scanning optical system, 320 virtual image forming part, 330 light shielding part, A1 1st area, A2 2nd area, SC outside scene (outside image), VI virtual image
An image light generation unit that generates image light representing an image, a light shielding unit that transmits external light at a given transmittance, and transmits external light that has passed through the light shielding unit, and is transmitted to the user's eyes by the image light. An image display unit that includes a virtual image forming unit that forms the virtual image, and is configured so that a user can visually recognize the virtual image and the external image;
A control unit that performs control to change the transmittance of the light shielding unit,
The image display unit has an imaging unit that captures the visual field direction of the user,
The light shielding portion includes a first region that transmits external light that is superimposed on the image light, and a second region that transmits external light that is not superimposed on the image light,
Based on the position of the external image in the captured image output from the imaging unit, determine whether the external image and the virtual image overlap,
Head mounted for controlling the transmittance of the first region of the light shielding unit and the transmittance of the second region according to the mutual positional relationship of whether or not the external image and the virtual image overlap each other. Type display device.
A detection unit provided in the image display unit for detecting movement of the user's head;
A control unit that performs control to change the transmittance of the light-shielding unit based on detection data detected by the detection unit,
Based on the detection data from the detection unit, determine whether the external image and the virtual image overlap,
In the case where the external image and the virtual image overlap each other, the transmittance of the second region is controlled so that the external world can be easily seen, and the transmittance of the first region is set to the second region. Lower than the transmittance of
A head-mounted type that controls the transmittance of the first region and the transmittance of the second region so as to make the outside world easier to see when the external image and the virtual image have a positional relationship that does not overlap. Display device.
The head-mounted display device, wherein the external image is a video screen, and the virtual image is a caption displayed superimposed on the video screen as the external image.
The head-mounted display device according to claim 4,
A head-mounted display device that controls the transmittance of the first region and the transmittance of the second region of the light shielding unit according to the size of the caption and the position of the caption.
Based on the detection data from the detection unit, determine whether the user's head has moved,
A head-mounted display device that controls the transmittance of the second region so that at least the outside is easily visible when the user's head moves.
The head-mounted display device, wherein the control unit performs control to change at least one of a size and a position of the first region.
JP2012083634A 2012-04-02 2012-04-02 Head-mounted display device Active JP6060512B2 (en)
US13/852,360 US9046686B2 (en) 2012-04-02 2013-03-28 Head-mount type display device
CN201310112099.XA CN103364953B (en) 2012-04-02 2013-04-02 Head-mount type display unit
JP2013214856A JP2013214856A (en) 2013-10-17
JP2013214856A5 JP2013214856A5 (en) 2015-05-07
JP6060512B2 true JP6060512B2 (en) 2017-01-18
JP2012083634A Active JP6060512B2 (en) 2012-04-02 2012-04-02 Head-mounted display device
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