JP2006208451A - Video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display device which displays a video in field image-picked up so that a user may more easily visually confirm it. <P>SOLUTION: In the case of displaying the video of external environment image-picked up by imaging parts 13L and 13R on user's eyes as a virtual image by video display parts 14L and 14R, the video display devices 1 and 1a display the video by adjusting the angle of view when the imaging part and the video display part are on the same optical axis in the line-of-sight direction of a user, and adjusting the angle of view and moving the video when the video display part and the imaging part are not on the same optical axis because the video display part is a transmission type one. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a video display device.

Conventionally, as a visual assistance device for a visually impaired person who interferes with general life such as night blindness, an image in the user's field of view is captured, and the user's image is captured with respect to the captured image. There is a head-mounted video display device that performs conversion according to visual impairment and displays the converted video on a display unit provided in front of the user's eyes.
The display unit of the video display device guides the light from the outside world and the virtual image of the captured video to the user's eyes at the same time using a transmission type hologram element, etc. There is an LCD (Liquid Crystal Display) or the like arranged so as to block a part or all of light, and a virtual image of an external image captured on the LCD is displayed to the user.
The user can recognize the situation of the outside world with reference to the virtual image projected on the eyes by the video display device.

For this reason, the image displayed on the user's eyes by the display unit described above needs to be displayed so that there is no error from the scenery of the outside world that directly enters the user's eyes so that the user can accurately recognize the real space. .
The error from the outside scene here is the difference between the outside scene image displayed on the display unit viewed from the user and the outside scene directly reaching the user's eyes. In other words, a user of a video display device that completely displays an image of the outside world in a partial display area in front of the eyes appears to be connected to the boundary between the area where the light from the outside world can be directly seen and the display area. It is not possible to distinguish whether the external scene is directly visible or the captured external image is visible.
As a technique for removing the difference between the real space and the virtual space recognized by the user, a marker for alignment is photographed by a camera mounted on the video display device to accurately determine the three-dimensional position in the real space. (See Patent Document 1).
JP 2004-205711 A

However, according to the technique described in the above-mentioned patent document, in the configuration in which the image captured by accurately measuring the three-dimensional position in the real space using the marker is displayed in the display area, there is no error from the viewpoint of the user. This is not sufficient for display, and the boundary between the display area and the area where the light from the outside light can be directly seen shifts, so that it is difficult for the user to understand the distance.
Furthermore, in an image display device that completely covers the user's eyes, an error may cause a shift in the recognition of the three-dimensional position, which may adversely affect the user's mood when used for a long time. was there.

  Therefore, an object of the present invention is to provide an image display device that captures an image within a user's field of view and displays an image that is easier for the user to visually recognize.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that display means arranged so that a display screen is positioned in front of a user's eyes, and the user's eyes positioned on the back side of the display screen. An imaging unit that captures an image in a line-of-sight direction, a storage unit that stores first correction data for correcting a shift amount between the user's line of sight and a directional line of the imaging unit, and the storage unit Display control means for correcting an image picked up by the image pickup means based on the first correction data and displaying it on the display screen of the display means.

  According to a second aspect of the present invention, in the first aspect of the invention, the display means is provided so as to be capable of adjusting a position, and further includes a position detection means for detecting the position of the display means, and the storage means , Storing second correction data for correcting a deviation amount between a video in a viewing angle direction corresponding to the display screen for each position of the display unit and a video imaged by the imaging unit, and the display control unit includes: Based on the second correction data stored in the storage unit according to the detection result by the position detection unit, the video imaged by the imaging unit is corrected and displayed on the display screen of the display unit. To do.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the imaging means is provided at a position where the display direction and the imaging direction for the user of the display means are the same optical axis, The display control means adjusts the angle of view of the video by the imaging means.

  According to a fourth aspect of the present invention, in the first or second aspect of the invention, the display means displays the image by the light from the outside and the video by the imaging means so that the user can see the image superimposed on each other. The display control means adjusts the angle of view and the display position of the video by the imaging means.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a plurality of the display means are provided so as to be position-adjustable.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, any one of the plurality of display means is mounted on the video display device so that the user faces the front front. When the user puts the video display device facing the front in front, the other display means displays the video in front of the front. It is characterized by doing.

  The invention according to claim 7 is the invention according to claim 6, wherein the image pickup means for picking up the foot image has higher sensitivity than the image pickup means for picking up the image in front of the front. And

  The invention according to claim 8 is the invention according to claim 6, wherein the image pickup means for picking up the image in front of the front has a wider dynamic range than the image pickup means for picking up the image of the foot. And

  According to the first aspect of the present invention, since the display is performed by correcting the shift between the user's line of sight and the directional line of the imaging means, the user can easily view the image without an error from the outside scene. Can be provided. For this reason, the user can grasp a more accurate sense of distance from the image by the display means, and does not feel bad even when used for a long time.

  According to the second aspect of the present invention, since the image captured in accordance with the image of the outside world in the viewing angle direction corresponding to the display screen that changes according to the position of the display means is displayed, the display screen is An image with no error can be provided at any position in front of the user's eyes.

  According to the third aspect of the invention, since the image pickup means is provided at a position where the display direction and the image pickup direction for the user of the display means are the same optical axis, it is simple only by adjusting the angle of view. It is possible to provide an image with no error in correction.

  According to the fourth aspect of the present invention, the captured image and the image by the light from the outside can overlap with each other with no error, and an image that is easier to visually recognize can be provided.

  According to invention of Claim 5, it can be set as the structure match | combined with the user's usage form, for example for right eye or left eye or for front display or for foot display.

  According to the inventions described in claims 6 to 8, while displaying a video in which the forward video having a wide width from a relatively dark place to a bright place is prevented from being over-exposed, an obstacle in the foot with a small difference in brightness. Therefore, it is possible to provide a video display device that can be easily viewed by visually impaired persons such as night blindness and amblyopia.

[First Embodiment]
Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments. The embodiment of the present invention shows the most preferable mode of the invention, and the terminology of the invention is not limited to this.

  First, the electrical configuration of the video display apparatus 1 according to the present invention will be described with reference to FIG. The video display device 1 includes a control unit 10, a battery 11, a data storage device 12, imaging units 13L and 13R, and video display units 14L and 14R.

  The control unit 10 as display control means includes a video display drive circuit 101, a power supply circuit 102, a CPU (Central Processing Unit), an internal RAM (Random Access Memory), and a ROM (Read Only Memory) not shown. In the CPU that controls the entire control, the control unit 10 controls the overall operation of the video display device 1 by sending a control signal to each unit according to various control programs stored in the ROM with a predetermined area of the internal RAM as a work area. .

  The video display driving circuit 101 is a circuit composed of an image processing DSP (Digital Signal Processor) and the like, and performs processing related to an image among various processing performed by the control unit 10. Specifically, the video display drive circuit 101 performs predetermined image processing on image data based on video signals input from imaging units 13L and 13R described later, and then converts the image data into predetermined video signals such as video signals. And output to the video display units 14R and 14L.

  Image processing performed on the image data by the video display driving circuit 101 includes enlargement / reduction processing, parallel movement processing, and the like. In the enlargement / reduction process, the angle of view of the captured image can be adjusted (electronic zoom), and in the parallel movement process, an image when moving in parallel with the imaging direction can be obtained.

  The video display drive circuit 101 also performs image processing such as gradation conversion, color conversion, sharpness processing, and image extraction. For example, sharpness processing for frequency correction and image extraction processing for binarizing luminance with a predetermined threshold value make it easy to capture the contour of an object in the outside world by enhancing the contour of the image. In color correction image processing performed using a color table stored in the data storage device 12 to be described later, a specific color is emphasized and displayed in black and white so that it can be easily viewed by a user who has a visual impairment such as color blindness. Can be. In addition, when the user has a weak color or the like, it is possible to make it easy to view by replacing the color that has not been distinguished in the past and displaying it with a different density or color. Further, in the luminance compression image processing, the luminance of the entire screen is logarithmically converted and displayed with reduced contrast, and it is easy to see by increasing the luminance as a whole.

  The power supply circuit 102 is a circuit that distributes drive power supplied from a battery 11 to be described later to each unit of the video display device 1. The power supply circuit 102 performs drive control of each part by conversion to a voltage corresponding to each part to be distributed and PWM (Pulse Width Modulation) according to an instruction from the CPU.

The battery 11 is a primary battery such as an alkaline battery or a manganese battery, or a secondary battery such as a nickel / cadmium storage battery, a nickel / hydrogen storage battery, or a lithium ion battery, and supplies driving power to the power supply circuit 102.
In this embodiment, the battery is driven so that it can be easily carried by the user. However, the battery may be connected to a commercial power source to supply driving power to each unit, and is limited to battery driving. It is not a thing.

  The data storage device 12 as a storage means is composed of an EEPROM (Electrically Erasable and Programmable ROM) which is an electrically erasable and rewritable nonvolatile memory, a flash memory, and the like, and is an image used during control processing by the control unit 10. Various setting data, first correction data, second correction data, processing program, image data, and the like of the display device 1 are stored, and data corresponding to a data request from the control unit 10 is transmitted to the control unit 10. To do. The first correction data and the second correction data are stored in advance as values measured at the time of factory shipment.

  The imaging units 13L and 13R serving as imaging units are each composed of a camera (132L and 132R) and an angle detection unit (131L and 131R) serving as position detection units, and adjust the imaging direction relative to the video display device 1. It is provided freely. In addition, the imaging units 13L and 13R capture images for the left eye and the imaging unit 13R for the left eye and the right eye, and output the captured images to the control unit 10 as video signals.

  The cameras 132L and 132R are configured by an optical lens made of glass, plastic, or the like, and an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) (both not shown), and the controller 10 takes a picture. When an instruction is input, an image of a subject input through the optical lens and formed on the above-described image sensor is converted into an electrical signal and output to the control unit 10 as a video signal.

  The angle detectors 131L and 131R are composed of a plurality of lens groups, and are configured to adjust the angle of view by changing the focal length by an actuator (not shown) driven by the power supply circuit 102 (optical zoom). May be. In this case, the angle of view can be adjusted while suppressing deterioration of the image due to image enlargement with respect to the electronic zoom described above.

  The angle detection units 131L and 131R are circuits that detect angles by a rotary sensor using a variable resistor or the like. The angle detection units 131L and 131R detect the imaging directions of the imaging units 13L and 13R with respect to the video display device 1 and output them to the control unit 10.

  Each of the video display units 14L and 14R is an LCD (Liquid Crystal Display), a backlight which is a white light source of the LCD, and an image displayed on the LCD for guiding a user's eyes to display a virtual image. The image display unit 14L displays a left eye image and the image display unit 14R displays a left eye image as a virtual image on the user's eye based on an image signal from the control unit 10.

  Next, the external configuration of the video display device 1 according to the present invention will be described with reference to FIGS. 2 is an external perspective view of the video display device 1 as viewed from the right front, and FIG. 3 is an external perspective view of the video display device 1 as viewed from the right rear.

  The external appearance of the video display device 1 includes a device unit 201, a head mounting portion 202, a connection cable 206, a connection cable 207, a pair of left and right ear pads 203L and 203R, temples 204L and 204R, and displays 205L and 205R. It is prepared for.

  The device unit 201 includes the control unit 10, the battery 11, and the data storage device 12 described above. Further, the device unit 201 is electrically connected to the display devices 205L and 205R and angle detection units 131L and 131R provided in the ear pads 203L and 203R described later by connection cables 206 and 207.

  The head mounting unit 202 includes ear pads 203L and 203R, and is configured in a headphone shape that is supported by the user's head top portion, temporal region, and ear portion.

  The ear pad 203 </ b> L is provided with a protruding portion 211 on the outer side opposite to the user's ear, and a temple 204 </ b> R having a holding hole 210 on one end side between the inner periphery of the holding hole 210 and the protruding portion 211. It is connected to the user's eyes so as to be rotatable in the vertical direction by friction. Similarly, a temple 204L is connected to the ear pad 203R. The above-described angle detectors 131L and 131R are provided inside the ear pads 203L and 203R, and detect the angles of the temples 204L and 204R.

On the other end side of the temples 204L and 204R, displays 205L and 205R are provided so that the LCDs 142L and 142R are positioned in front of the user's eyes. Note that the joint portions between the temples 204L and 204R and the displays 205L and 205R can be adjusted so that the display direction of the LCDs 142L and 142R is always the direction of the user's eyes when worn. The temples 204L and 204R are joined to the first temple parts 204La and 204Ra and the second temple parts 204Lb and 204Lb so as to be rotatable by the rotary joint parts 209L and 209R, for example, in front of the user / under the feet. When the display device is arranged in the direction, it is possible to adjust the display direction of the LCD more accurately to the direction of the user's eyes.
Further, the temples 204L and 204R may be configured to include a mechanism that allows the length to expand and contract and to include a mechanism that adjusts the positions of the indicators 205L and 205R according to the user.

  The user wears the video display device 1 with the headphone-type head mounting portion 202 so that the ear pads 203R and 203L touch the left and right ears. Thereby, the video display apparatus 1 positions the display 205R including the camera 132R in front of the user's right eye and the LCD 142R in front of the user, and the display 205L in front of the user's left eye. Can be made.

  Further, since the display devices 205L and 205R of the video display device 1 are rotatably connected to each other, one can be used for front display and the other can be used for foot display.

  Next, using FIGS. 4 to 7, a configuration in which the external images captured by the cameras 132 </ b> L and 132 </ b> R are displayed as virtual images from the LCDs 142 </ b> L and 142 </ b> R as virtual images without error on the above-described display devices 205 </ b> L and 205 </ b> R. Show. In the present embodiment, since the same processing is performed in both the vertical direction and the horizontal direction, the description regarding the vertical direction will be made and the description on the horizontal direction will be omitted.

  FIG. 4 is a longitudinal sectional view in which the indicators 205L and 205R are arranged in the line-of-sight direction of the user's eye E. θ is the vertical display angle (viewing angle) of the virtual image displayed on the LCDs 142L and 142R viewed from the eye E, and θ1 is the vertical field angle of the video imaged by the cameras 132L and 132R. Then, as shown in the figure, the cameras 132L and 132R are provided so as to capture the line-of-sight direction opposite to the display direction on the same optical axis as the LCDs 142L and 142R.

  Since the video display device 1 has the above-described configuration, the angle of view of the video captured by the cameras 132L and 132R is determined in advance such as the size of the display area at the time of factory shipment, the distance from the user's eyes at the time of wearing, and the like. An image without error can be displayed on the eye E by adjusting according to the correction data (first correction data) relating to the shift of the image according to the state of the device measured and stored in the data storage device 12.

  Further, since the video display device 1 has a configuration in which the cameras 132L and 132R and the LCDs 142L and 142R are arranged on the same optical axis, it is possible to display a video with no error on the eye E only by adjusting the angle of view. it can.

  FIG. 5 is a view showing a longitudinal section in a configuration in which the indicators 205L and 205R are rotated in the foot direction in addition to the front direction shown in FIG. θ2 is a vertical display angle (viewing angle corresponding to the display screen) of the virtual image displayed on the LCDs 142L and 142R rotated in the foot direction, and the rotation angle in the foot direction depending on the length of the temples 204R and 204L, That is, it changes according to the position of the display screen. θ3 is the angle of view of the images of the cameras 132L and 132R that capture the foot direction.

  The video display device 1 detects the angle of rotation in the foot direction by the angle detectors 131L and 131R provided inside the ear pads 203L and 203R, and the angle of view of the video imaged by the cameras 132L and 132R. By adjusting based on the angle of view according to the rotation angle, which is the second correction data that is measured in advance and stored in the data storage device 12, the image in the viewing angle direction corresponding to the display screen, the captured image, and Can be corrected, and even when the video display device 1 faces in the foot direction, a video with no error can be displayed on the eye E. Note that the field angle corresponding to the rotation angle stored in the data storage device 12 is stored as a LUT (Look Up Table) corresponding to each predetermined rotation angle, but an intermediate value is approximated. The required configuration may be used.

  FIG. 6 shows the relationship between the aforementioned θ and θ1, and θ2 and θ3. The plane P1 is a plane corresponding to the display range of the virtual image displayed on the LCDs 142L and 142R when the displays 205L and 205R face the front direction. The plane P2 is a plane corresponding to the display range of the virtual image displayed on the LCDs 142L and 142R when the display devices 205L and 205R are facing the foot. Θ1 and θ3 are set to angles of view such that images captured by the cameras 132L and 132R are planes P1 and P2.

  As described above, the video display device 1 is configured to display by adjusting the angle of view of the imaging in accordance with the angle of view of the virtual image displayed on the user's eyes, so that there is no error with the outside scene. Can be provided to the user. Furthermore, even when the display devices 205L and 205R can be moved in front of the user's eyes, the configuration is such that the angle of view is adjusted according to the detected angle, so there is no possibility of an error occurring. In addition, since the video display unit and the imaging unit are provided on the same optical axis, a video with no error can be provided with a simple configuration that only adjusts the angle of view.

  Note that the video display device 1 according to the present embodiment is configured to be able to move the displays 205L and 205R in front of the user's eyes. For example, the user wears the video display device 1 and faces the front front. In this case, one of the indicators 205L and 205R may be fixed for a front display arranged in the forward direction, and the other may be fixed for a foot display arranged in the foot direction. In this case, the imaging unit that captures images in the front with a large difference between light and dark widens the dynamic range, while the imaging unit that captures relatively dark feet increases the integration time and increases the sensitivity. In addition to using a display unit, a display unit that displays a front image is darkened, and a display unit that displays a foot image is brightened.

  Further, the display of the video display device 1 is movable in the forward direction and the foot direction as described above, and has a configuration in which the video display drive circuit 101 described above performs correction on the dynamic range and sensitivity according to the arranged direction. There may be.

  In the above-described configuration in which the display for the foot display and / or the front display is provided, an image in which the forward image having a wide width from a relatively dark place to a bright place is prevented from being displayed and a difference in brightness is displayed. Since an image that can identify an obstacle, a step, etc. under a small foot is displayed, it is possible to provide an image display device that is easier for a visually handicapped person such as night blindness or amblyopia to visually recognize.

[Second Embodiment]
Next, as a second embodiment, a configuration of a video display device 1a using hologram elements 143L and 143R will be described. For the sake of simplification, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only the characteristic features of the second embodiment will be described.

  First, FIG. 7 shows an external perspective view of the video display device 1a. The video display device 1a includes lenses 208L and 208R that transmit external light below the displays 205L and 205R and are provided with hologram elements 143L and 143R, and cameras 132L and 132R beside the displays 205L and 205R.

  As shown in the figure, the positions where the cameras 132L and 132R are provided may be provided on the user's nose side, but may be provided on the ear side, and are not particularly limited. More preferably, the vicinity of hologram elements 143L and 143R described later is preferable.

  The hologram elements 143L and 143R diffract light including image information from an LED (Light Emitting Diode) light source (not shown) and a transmissive LCD inside the upper display devices 205L and 205R to form light beams close to parallel light. The lenses 208L and 208R are arranged so as to be incident on the user's eyes. Note that the arrangement of the hologram elements 143L and 143R is in front of the user's eyes and uses light including image information that is irradiated from the display devices 205L and 205R and is totally reflected and guided through the lenses 208L and 208R. This is the angle at which a virtual image is displayed on the person's eyes. Thereby, the user can recognize the virtual image of the image displayed on the transmissive LCD. Further, since the hologram elements 143L and 143R hardly act on the light from the outside, the virtual image is observed overlapping with the image by the light from the outside.

  Further, the hologram elements 143L and 143R make the interference fringes to be used as hologram sensitive materials by causing two light beams to interfere with each other with the lasers of RGB three colors so as to increase the diffraction efficiency of each color of the LEDs inside the above-described displays 205L and 205R. It is produced by a two-beam interference method for recording. The hologram sensitive material may be silver salt or heavy chromium gelatin, but a photopolymer that can be used in a dry process is most preferable. Further, the film thickness of the hologram light-sensitive material that sufficiently transmits external light is preferably 5 μm to 100 μm, and more preferably 15 μm to 80 μm.

  Next, FIG. 8 shows a configuration in which an external image captured by the cameras 132L and 132R is displayed as a virtual image from the hologram elements 143L and 143R to the eye E without any error from the external scene. In the present embodiment, since the same processing is performed in both the vertical direction and the horizontal direction, the description regarding the vertical direction will be made and the description on the horizontal direction will be omitted.

  FIG. 8 is a vertical cross-sectional view in which the indicators 205L and 205R are arranged in the user's front or foot direction (direction in which the plane P1 or the plane P2 is viewed). θ4 and θ6 are viewing angles when the planes P1 and P2 are viewed from the user, and θ5 and θ7 are angles of view when the planes P1 and P2 are captured from the camera.

In the present embodiment, since the imaging unit and the display unit on the same optical axis are not arranged side by side, the captured image is moved along with the adjustment of the angle of view, and is displayed from hologram elements 143L and 143R. .
Note that the adjustment of the angle of view according to the rotation angle detected by the angle detectors 131L and 131R is the same as that in the first embodiment, and is therefore omitted.

The movement process here is performed according to a movement amount set in advance at the time of factory shipment or the like according to the positional relationship between the imaging units 13L and 13R and the video display units 14L and 14R of the video display device 1a. Specifically, when the imaging units 13L and 13R are provided above the video display units 14L and 14R as in the present embodiment, a downward movement process is performed.
Further, the movement process described above adjusts the movement amount of the video to be displayed based on the rotation angle detected by the angle detection units 131L and 131R and the movement amount corresponding to the rotation angle stored in the data storage device 12.

  As described above, the video display device 1a is configured to display by adjusting the angle of view of a virtual image displayed on the user's eyes and the positional relationship between the imaging unit and the video display unit. As a result, it is possible to provide the user with an image that is free from errors with the scenery of the outside world. For this reason, even if the transmission type video display unit is provided and it is difficult to provide the video display unit and the imaging unit on the same optical axis, an error-free video can be provided.

  The present invention can be freely changed and improved without departing from the spirit of the invention. In the present embodiment, a glasses-type configuration is used, but, for example, a goggle-type configuration may be used.

It is a figure which shows typically the functional structure of the video display apparatus 1 which is this invention. It is an external appearance perspective view of the video display apparatus 1 in 1st Embodiment seen from the front right with respect to the front direction of the user with whom the video display apparatus 1 is mounted | worn. It is the external appearance perspective view of the video display apparatus 1 seen from the right rear with respect to the front direction of the user who mounts the video display apparatus. It is a longitudinal cross-sectional view at the time of arrange | positioning display 205L, 205R in the gaze direction of the user's eyes E. FIG. It is a longitudinal cross-sectional view at the time of arrange | positioning indicator 205L, 205R in the gaze direction of a user's eyes E, and a foot direction. It is a figure which shows the relationship between an imaging field angle and a display angle at the time of arrange | positioning indicator 205L, 205R to the gaze direction of a user's eye | texture E, and a foot direction. It is an external appearance perspective view of the video display apparatus 1a in 2nd Embodiment. It is a figure which shows the relationship between the captured image and display image in 2nd Embodiment.

Explanation of symbols

1, 1a Video display device 10 Control unit 101 Video display drive circuit 102 Power supply circuit 11 Battery 12 Data storage device 13L, 13R Imaging unit 131R, 131L Angle detection unit 132R, 132L Camera 14R, 14L Video display unit 141R, 141L Backlight 142R, 142L LCD
143R, 143L Hologram element 201 Device unit 202 Head mounting part 203R, 203L Ear pad part 204R, 204L Temple 205R, 205L Display 206, 207 Connection cable 208R, 208L Lens 210 Holding hole 211 Projection part E Eye P1, P2 Plane

Claims (8)

Display means arranged so that the display screen is positioned in front of the user's eyes;
An imaging unit that is located on the back side of the display screen and that captures an image of the user's line-of-sight
Storage means storing first correction data for correcting a deviation amount between the user's line of sight and the directional line of the imaging means;
Display control means for correcting the video imaged by the imaging means based on the first correction data stored in the storage means and displaying it on the display screen of the display means;
A video display device comprising: The display means is provided so as to be position adjustable, and further includes a position detection means for detecting the position of the display means,
The storage means stores second correction data for correcting a deviation amount between a video in a viewing angle direction corresponding to the display screen for each position of the display means and a video taken by the imaging means,
The display control means corrects the video imaged by the imaging means based on the second correction data stored in the storage means in accordance with the detection result by the position detection means, and displays it on the display screen of the display means. The video display device according to claim 1, wherein the video display device displays the video. The imaging means is provided at a position where the display direction and the imaging direction for the user of the display means are the same optical axis,
The video display device according to claim 1, wherein the display control unit adjusts an angle of view of a video by the imaging unit. The display means displays the image by the light from the outside and the image by the imaging means so as to be able to be viewed from the user,
The video display device according to claim 1, wherein the display control unit adjusts an angle of view and a display position of a video by the imaging unit.   5. The video display device according to claim 1, wherein a plurality of the display units are provided so as to be position-adjustable.   Among the plurality of display means, any one of the display means is arranged in the foot direction when the user wears the video display device facing the front front, displays the foot image, and other display 6. The video display device according to claim 5, wherein the means is arranged in a front front direction when the user wears the video display device facing the front front and displays a front front image.   The video display device according to claim 6, wherein the imaging unit that captures the foot image has higher sensitivity than the imaging unit that captures the front front image.   The video display device according to claim 6, wherein the imaging unit that captures the image in front of the front has a wider dynamic range than the imaging unit that captures the foot image.

Images