Video display device

Abstract

To provide a video display device capable of reducing visual displacement between display video and its surroundings and simplifying the structure.SOLUTION: A video display device comprises one or more imaging display units. The imaging display unit comprises: an imaging mirror reflecting light from an object domain; an imaging part including an image pickup element imaging an image from the imaging mirror; a display part displaying an image imaged by the imaging part; and a visible recognition mirror projecting the image displayed on the display part toward an observer. The optical axis of the imaging mirror is coincident with the optical axis of the visible recognition mirror. The imaging field angle of the imaging mirror is equal to the display field angle of the image appearing on the visible recognition mirror. The image pickup element is positioned optically conjugate to the object domain with respect to the imaging mirror. The display part is positioned optically conjugate to the observer with respect to the visible recognition mirror.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a video display device.

Background Art

[0002] Conventionally, a video display device equipped with a video see-through type display has been used (for example, see Patent Document 1). In this type of video display device, for example, a virtual image can be displayed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a video display device, when an observer can directly view not only the displayed image but also its surroundings (that is, the real world outside the displayed image), a visual deviation may occur between the displayed image and its surroundings. When such a deviation occurs, the continuity between the displayed image and its surroundings is impaired, which may affect the visibility and workability by the observer. In a video display device, there are many components and the structure tends to be complex. Therefore, simplification of the structure has been demanded.

[0005] An object of the present invention is to provide a video display device that can reduce the visual deviation between the displayed image and its surroundings and can simplify the structure.

Means for Solving the Problems

[0006] The video display device according to the first aspect of the present invention includes one or more imaging display units. The imaging display unit includes an imaging mirror that reflects light from a target area, an imaging unit having an image sensor that captures an image from the imaging mirror, a display unit that displays the image captured by the imaging unit, and a viewing mirror that reflects the image displayed on the display unit toward an observer. The optical axis of the imaging mirror coincides with the optical axis of the viewing mirror, the imaging angle of view of the imaging mirror is equal to the display angle of view of the image reflected by the viewing mirror, the image sensor is located at a position optically conjugate with the target area with respect to the imaging mirror, and the display unit is located at a position optically conjugate with the observer with respect to the viewing mirror.

[0007] The video display device according to the second aspect of the present invention is, in the first aspect, wherein the plurality of imaging display units include a first imaging display unit that provides an image to the right eye of the observer and a second imaging display unit that provides an image to the left eye of the observer.

[0008] The video display device according to the third aspect of the present invention is, in the first or second aspect, when assuming a virtual display surface optically conjugate with the display surface of the display unit with respect to the viewing mirror, the viewing mirror takes an arrangement defined by a virtual line passing through the periphery of the virtual display surface and the viewpoint of the observer.

[0009] The video display device according to the fourth aspect of the present invention is, in any one of the first to third aspects, wherein the imaging display unit further includes a control unit that incorporates a virtual image into the image and displays it on the display unit.

Advantages of the Invention

[0010] According to one aspect of the present invention, there is provided a video display device capable of reducing the visual deviation between the displayed video and its surroundings and simplifying the structure.

Brief Description of the Drawings

[0011]

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[0012] An image display device according to an embodiment will be described with reference to the drawings.

[0013] [Video display device] Fig. 1 is a schematic diagram of an image display device 100 according to an embodiment. Fig. 2 is a schematic diagram showing the structure of the image display device 100. Fig. 3 is a schematic diagram showing the positional relationship between the display surface 25a of the display device 25, the second reflecting surface 27a of the viewing mirror 27, and the virtual display surface 25b. Fig. 4 is a schematic diagram showing the positional relationship between the second reflecting surface 27a and the virtual display surface 25b.

[0014] As shown in FIG. 1, the image display device 100 includes an imaging display unit 20R (first imaging display unit) for providing an image to the observer's right eye 1R, and an imaging display unit 20L (second imaging display unit) for providing an image to the observer's left eye 1L.

[0015] The imaging display unit 20R and the imaging display unit 20L each include an imaging mirror 21, an imaging device 22 (imaging unit), a display device 25 (display unit), a viewing mirror 27, and a control device 10 (control unit). The imaging display unit 20R and the imaging display unit 20L have, for example, the same constituent members. The constituent members of the imaging display unit 20R and the constituent members of the imaging display unit 20L are arranged symmetrically with respect to the target area 70 left and right.

[0016] The imaging mirror 21 for the right eye and the imaging mirror 21 for the left eye are arranged symmetrically with respect to the target area 70 left and right. The imaging device 22 for the right eye and the imaging device 22 for the left eye are arranged symmetrically with respect to the target area 70 left and right. The display device 25 for the right eye and the display device 25 for the left eye are arranged symmetrically with respect to the target area 70 left and right. The viewing mirror 27 for the right eye and the viewing mirror 27 for the left eye are arranged symmetrically with respect to the target area 70 left and right.

[0017] One surface of the imaging mirror 21 is a first reflecting surface 21a (see FIG. 2). The imaging mirror 21 is arranged to reflect light from the area (target area 70) to be imaged by the imaging device 22 with the first reflecting surface 21a and provide it to the imaging device 22.

[0018] The imaging device 22 is, for example, a digital high-definition video camera. The imaging device 22 has an imaging element 22A using a CCD (Charge Coupled Device), a CMOS (Complementary Metal-Oxide Semiconductor), etc. (see FIG. 2). The imaging device 22 is arranged to image the image reflected by the first reflecting surface 21a of the imaging mirror 21 (see FIG. 2). That is, the imaging device 22 is arranged to image an image of the target area 70 including the work target 80 via the imaging mirror 21. The imaging device 22 transmits real image data, which is information on the captured image, to the control device 10.

[0019] The display device 25 is, for example, a liquid crystal display (LCD), an organic EL (EL: Electro-Luminescence), or the like. A signal (real image data) from the imaging device 22 is sent from the control device 10 to the display device 25. The display device 25 displays the image captured by the imaging device 22 based on the signal from the imaging device 22. The display device 25 is controlled by the control device 10.

[0020] One surface of the viewing mirror 27 is the second reflecting surface 27a (see FIG. 2). The viewing mirror 27 is a total reflection mirror that reflects the image displayed on the display device 25. The image displayed on the display device 25 is reflected toward the observer by the second reflecting surface 27a of the viewing mirror 27. The observer can indirectly view the image displayed on the display device 25 by looking at the viewing mirror 27. The image reflected on the viewing mirror 27 and viewed by the observer is also referred to as a "display video".

[0021] The imaging mirror 21 of the imaging display unit 20R is an example of a first imaging mirror. The imaging device 22 of the imaging display unit 20R is an example of a first imaging device 22 (first imaging unit). The imaging element 22A of the imaging device 22 of the imaging display unit 20R is an example of a first imaging element. The display device 25 of the imaging display unit 20R is an example of a first display device (first display unit). The viewing mirror 27 of the imaging display unit 20R is an example of a first viewing mirror. The control device 10 of the imaging display unit 20R is an example of a first control device.

[0022] The imaging mirror 21 of the imaging display unit 20L is an example of a second imaging mirror. The imaging device 22 of the imaging display unit 20L is an example of a second imaging device 22 (second imaging unit). The imaging element 22A of the imaging device 22 of the imaging display unit 20L is an example of a second imaging element. The display device 25 of the imaging display unit 20L is an example of a second display device (second display unit). The viewing mirror 27 of the imaging display unit 20L is an example of a second viewing mirror. The control device 10 of the imaging display unit 20L is an example of a second control device.

[0023] The shapes of the first reflecting surface 21a of the imaging mirror 21, the display surface 25a of the display device 25, and the second reflecting surface 27a of the viewing mirror 27 are not particularly limited. The shapes of the first reflecting surface 21a, the display surface 25a, and the second reflecting surface 27a may be, for example, polygons such as quadrilaterals, circles, ellipses, etc. The first reflecting surface 21a, the display surface 25a, and the second reflecting surface 27a may be flat or curved surfaces.

[0024] The shapes of the first reflecting surface 21a of the imaging mirror 21 and the second reflecting surface 27a of the viewing mirror 27 can be determined according to the arrangement, posture, etc. of other components (such as the imaging device 22, the display device 25, etc.).

[0025] The video display device 100 has a positioning tool (not shown) for determining the position of the observer's line of sight. The observer positions himself / herself by placing his / her forehead against the positioning tool so that the right eye 1R faces the viewing mirror 27 of the imaging display unit 20R and the left eye 1L faces the viewing mirror 27 of the imaging display unit 20L. In FIG. 1, the right eye 1R and the left eye 1L of the observer are schematically shown.

[0026] As shown in FIG. 2, A1 is the optical axis of the imaging mirror 21. The optical axis A1 passes through the center of the first reflecting surface 21a. A2 is the optical axis of the viewing mirror 27. The optical axis A2 passes through the center of the second reflecting surface 27a.

[0027] The imaging mirror 21 and the viewing mirror 27 are arranged such that the optical axis A1 and the optical axis A2 coincide. In other words, the extension line of one of the optical axes A1, A2 coincides with the other. Thereby, the visual deviation between the displayed video seen by the observer and its surroundings can be reduced. The surroundings of the displayed video refer to the real world outside the displayed video.

[0028] The angular field (°) of the image of the target area 70 reflected by the imaging mirror 21 is referred to as the imaging angular field. The angular field (°) of the display image reflected by the viewing mirror 27 is referred to as the display angular field. The imaging angular field and the display angular field are equal. In FIG. 2, the periphery of the first reflecting surface 21a is on the extension line of the straight line passing through the observer (the right eye 1R in FIG. 2) and the periphery of the second reflecting surface 27a. Since the imaging angular field and the display angular field are equal, it is possible to suppress the observation magnification of the display image viewed by the observer from becoming excessive or too small compared to the image during naked-eye observation. Therefore, the visual deviation between the display image viewed by the observer and its surroundings can be reduced.

[0029] The imaging angular field and the display angular field do not necessarily have to exactly match. For example, if the ratio of the imaging angular field to the display angular field (imaging angular field / display angular field) is in the range of 0.9 to 1.1, the imaging angular field and the display angular field can be regarded as equal.

[0030] The imaging element 22A is located at a position optically conjugate to the target area 70 with respect to the imaging mirror 21. The display device 25 is located at a position optically conjugate to the observer (the right eye 1R in FIG. 2) with respect to the viewing mirror 27. Since the imaging element 22A and the target area 70 are located at positions optically conjugate to each other, and the display device 25 and the observer are located at positions optically conjugate to each other, the visual deviation between the display image viewed by the observer and its surroundings can be reduced.

[0031] With reference to FIGS. 3 and 4, a configuration example of the viewing mirror 27 will be described. As shown in FIG. 3, a virtual display surface 25b optically conjugate to the display surface 25a of the display device 25 is assumed with respect to the viewing mirror 27. The virtual display surface 25b has a shape corresponding to the display surface 25a. The shape of the virtual display surface 25b may be, for example, a polygon such as a quadrilateral, a circle, an ellipse, or the like. In the present embodiment, the display surface 25a and the virtual display surface 25b are quadrilaterals (rectangles).

[0032] Fig. 4(A) is a plan view schematically showing the relationship between the virtual display surface 25b and the second reflecting surface 27a of the viewing mirror 27. Fig. 4(B) is a front view schematically showing the relationship between the virtual display surface 25b and the second reflecting surface 27a. Fig. 4(C) is a side view schematically showing the relationship between the virtual display surface 25b and the second reflecting surface 27a.

[0033] In Figs. 4(A) to 4(C), xyz orthogonal coordinate axes are used. The x-axis and the z-axis are parallel to the virtual display surface 25b. The x-axis and the z-axis are orthogonal to each other. The y-axis is orthogonal to the x-axis and the z-axis. The coordinates (x0, y0, z0) of the observer's viewpoint 1 (right eye 1R or left eye 1L) are represented as (We, 0, 0) with reference to the origin O. The length of the long side of the virtual display surface 25b is 2W (see Fig. 4(B)). The length of the short side of the virtual display surface 25b is 2H (see Fig. 4(C)). The distance between the origin O and the virtual display surface 25b is L (see Fig. 4(B)).

[0034] The positional relationship between the second reflecting surface 27a and the virtual display surface 25b will be described with reference to Figs. 4(A) to 4(C). As shown in Fig. 4(A), among the four corners 5A to 5D of the virtual display surface 25b, the coordinates (x5A, y5A, z5A) of the first corner 5A are (W, L, H). The coordinates (x5B, y5B, z5B) of the second corner 5B are (W, L, -H). The coordinates (x5C, y5C, z5C) of the third corner 5C are (-W, L, -H). The coordinates (x5D, y5D, z5D) of the fourth corner 5D are (-W, L, H). The coordinates (x5, y5, z5) of the center 5E of the virtual display surface 25b are (0, L, 0).

[0035] Assume virtual lines passing through the observer's viewpoint 1 and the corners 5A to 5D of the virtual display surface 25b. The first virtual line E1 passes through the observer's viewpoint 1 and the first corner 5A. The second virtual line E2 passes through the viewpoint 1 and the second corner 5B. The third virtual line E3 passes through the viewpoint 1 and the third corner 5C. The fourth virtual line E4 passes through the viewpoint 1 and the fourth corner 5D. The corners 5A to 5D are examples of the periphery of the virtual display surface 25b.

[0036] As shown in FIG. 4(A), the second reflecting surface 27a is square. As shown in FIGS. 4(A) to 4(C), among the four corner portions 1A to 1D of the second reflecting surface 27a, the first corner portion 1A is on the first virtual line E1. The second corner portion 1B is on the second virtual line E2. The third corner portion 1C is on the third virtual line E3. The fourth corner portion 1D is on the fourth virtual line E4. Thus, the second reflecting surface 27a is a surface defined by the virtual lines E1 to E4. By configuring the second reflecting surface 27a in this way, the displayed image seen by the observer and its surroundings are continuously connected. Therefore, the visual deviation between the displayed image and its surroundings can be reduced.

[0037] The normal vector v1(a1, b1, c1) of the second reflecting surface 27a is determined according to the display surface 25a and the position of the observer.

[0038] The control device 10 is, for example, a PC (Personal Computer) or the like. Examples of the PC include a desktop PC, a notebook PC, a tablet PC, and the like.

[0039] FIG. 5 is a schematic diagram showing an example of the work object 80. In FIG. 5, as the work object 80, a real member 81, a virtual member 82, and a related member 85 are exemplified. The real member 81 is an actual member handled by the observer via the work tool 58. The virtual member 82 is a virtual member created based on the real member 81. The virtual member 82 can be handled via the work tool 58. The related member 85 is an actual member related to the work involving the real member 81 and the virtual member 82.

[0040] The related member 85 is, for example, attached and detached when the real member 81 or the virtual member 82 is attached and detached. The virtual member 82 is included in the augmented reality image displayed on the display device 25. The virtual member 82 is visually recognized by the observer via the viewing mirror 27. When directly viewing the work object 80, the observer cannot visually recognize the virtual member 82.

[0041] The force feedback device 50 includes a main body 51, a horizontal drive unit 52, a drive mechanism unit 53, a control unit 54, an arm unit 55, a joint unit 56, and a working tool 58. The main body 51 is a part that serves as the base of the force feedback device 50. The horizontal drive unit 52 is connected to the main body 51. The horizontal drive unit 52 is rotatable along the horizontal plane with respect to the main body 51. The arm unit 55 is connected to the horizontal drive unit 52. The arm unit 55 is rotatable about the connection point to the horizontal drive unit 52.

[0042] The drive mechanism unit 53 includes, for example, a motor. The drive mechanism unit 53 presents the force sense related to the virtual member 82 to the observer via the horizontal drive unit 52, the arm unit 55, and the working tool 58 according to the command of the control unit 54.

[0043] The control unit 54 controls the operation of the drive mechanism unit 53 in cooperation with the control device 10. Specifically, the control unit 54 operates the drive mechanism unit 53 according to the command from the control device 10 or based on its own determination process. The control unit 54 includes storage means such as a memory and arithmetic means such as a CPU. A program for the operation of the arithmetic means is stored in the storage means. The joint unit 56 connects the working tool 58 to the tip of the arm unit 55.

[0044] The working tool 58 is a tool for performing work on the real member 81 and virtual work on the virtual member 82. The working tool 58 is operated by the observer's hand. The working tool 58 can move freely with the joint unit 56 as a fulcrum. The working tool 58 is provided with an acting part 5 that acts on the handling part of the real member 81 that is the object to be handled in the work and the handling part of the virtual member 82 that is the object to be handled in the work. The handling part is a part that is handled by the working tool 58.

[0045] The acting part 5 is a configuration for capturing, moving, removing from a hole, attaching, or connecting to other members the real member 81 or the virtual member 82. The acting part 5 can change the operation content and the structure of the tip according to the work content.

[0046] The control device 10 has an image generation means. The image generation means incorporates one or more virtual members 82 as virtual images into an image (real image data) of the target area 70 to generate an extended reality image for display. For example, if the virtual member 82 is in a state of being captured by the work tool 58, the image generation means causes the virtual member 82 in the generated extended reality image to follow the movement of the work tool 58.

[0047] The image generation means generates an extended reality image to be displayed on the display devices 25 of the imaging display units 20R, 20L based on the real image data acquired from the imaging devices 22 of the imaging display units 20R, 20L. The control device 10 causes the extended reality image generated by the image generation means to be displayed on the respective display devices 25 of the imaging display unit 20R and the imaging display unit 20L.

[0048] [Method of using the video display device] An example of the method of using the video display device 100 will be described. FIG. 6 is a schematic diagram showing an example of the extended reality image reflected on the viewing mirror 27 and the surroundings of the viewing mirror 27. FIG. 6 shows the visual field captured by the right eye 1R of the observer. In FIG. 6, a state in which the real member 81 is captured by the work tool 58 (a state in which the real member 81 can be captured) is illustrated.

[0049] As shown in FIG. 6, the extended reality image is displayed in the area of the work target 80 as seen by the observer. The observer can visually recognize the extended reality image reflected on the viewing mirror 27 and the surrounding real world. In the video display device 100, the observer can visually recognize the extended reality image (AR image) as if the viewing mirror 27 were transparent.

[0050] The viewing mirror 27 is adjusted so that the image reflected on the viewing mirror 27 and the surrounding real world are continuously connected at the boundary between the viewing mirror 27 and the real world. The observer can see not only their own hand and the working object of the real object but also the virtual object in the viewing mirror 27.

[0051] In this embodiment, the work object 80 includes a plurality of real members 81, a plurality of virtual members 82, and two associated members 85. The real members 81 and the virtual members 82 are cylindrical pegs. The associated members 85 are formed with holes 85h into which the real members 81 and the virtual members 82 can be inserted. In this embodiment, an operation is performed to move all of the real members 81 and the virtual members 82 inserted into the hole 85h of the right associated member 85 to the hole 85h of the left associated member 85.

[0052] The working part 5 of the working tool 58 is an electromagnet, and when an electric current flows through the coil 5b, a magnetic force is generated in the capturing part 5a of the working part 5. The working part 5 is connected to a control part 54 (see FIG. 5) by a conducting wire or the like. When in the on state where the magnetic force is generated, the working part 5 can adsorb and capture the real member 81 in the capturing part 5a. When in the off state, the working part 5 can release the real member 81 from the capturing part 5a. An observer can repeat the operation of adsorbing the real member 81 inserted into the hole 85h of the right associated member 85 by the working part 5 of the working tool 58 and inserting it into the hole 85h of the left associated member 85.

[0053] By image processing by the control device 10, an observer can also visually move the virtual member 82 from the right associated member 85 to the left associated member 85 in the same manner as the real member 81. Then, the control device 10 can generate, in cooperation with the force feedback device 50, the same force feedback as when moving the real member 81 also during the movement operation of the virtual member 82 on the working tool 58.

[0054] The control device 10 causes, for example, the virtual member 82 in the generated augmented reality image to follow the movement of the working tool 58. Therefore, after the observer captures the virtual member 82 with the working tool 58, until the movement of the virtual member 82 ends or until an instruction to release the virtual member 82 is given, the observer can visually recognize the virtual member 82 that moves together with the movement of the working tool 58.

[0055] In this embodiment, an operation of moving the virtual member 82 to a target location is exemplified. In the case of this operation, the image generation means may include an emphasized image K serving as a landmark of the target location in the augmented reality image. In the example shown in FIG. 6, the augmented reality image includes an emphasized image K disposed in the vicinity of the hole 85h of the related member 85 on the left side, which is the movement destination (destination) of the virtual member 82. The emphasized image K may be made visually prominent, for example, by adopting a color different from that of the related member 85. In this way, when the augmented reality image including the emphasized image K is displayed on the display device 25, the position of the movement destination can be clearly indicated, so that the workability of the observer can be improved.

[0056] [Effects of the video display device of the embodiment] According to the video display device 100 of this embodiment, the optical axis A1 of the imaging mirror 21 and the optical axis A2 of the viewing mirror 27 coincide. The imaging angle of view of the imaging mirror 21 is equal to the display angle of view of the image reflected by the viewing mirror 27. The imaging element 22A is located at a position optically conjugate to the target area 70. The display device 25 is located at a position optically conjugate to the observer. With these configurations, the visual deviation between the display video seen by the observer and its surroundings can be reduced. Therefore, it is suitable in terms of the visibility of the target area 70 by the observer and the ease of work.

[0057] The video display device 100 includes an imaging mirror 21, an imaging device 22, a display device 25, and a viewing mirror 27. Since the video display device 100 has a configuration in which the image displayed on the display device 25 is reflected by the viewing mirror 27 and directed toward the observer, it has few components and a simple structure. Therefore, it is advantageous in terms of the size of the device, manufacturing cost, etc.

[0058] The video display device 100 includes a plurality of imaging and display units 20R and 20L. Therefore, images can be provided to the right eye 1R and the left eye 1L of the observer respectively. Therefore, it is excellent in terms of the visibility of the target area 70 by the observer.

[0059] Since the imaging display units 20R and 20L can display an augmented reality image incorporating a virtual image, it is possible to provide an environment in which work training and the like can be performed in the same manner as when using an actual member by utilizing the virtual image.

[0060] The video display device 100 can independently perform the image processing related to the imaging display unit 20R and the image processing related to the imaging display unit 20L. Therefore, the speed of image processing can be increased.

[0061] Each configuration and their combinations in the above-described embodiments are examples, and additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the present invention. Further, the present invention is not limited by the embodiments and is limited only by the scope of the claims.

[0062] In the video display device 100 shown in FIG. 1, it is preferable that the imaging display unit 20R and the imaging display unit 20L are arranged symmetrically left and right. However, the relative arrangement of the imaging display unit 20R and the imaging display unit 20L is not particularly limited, and an asymmetrical arrangement left and right may be used. For example, the imaging mirror 21 for the right eye and the imaging mirror 21 for the left eye may be arranged asymmetrically left and right. The imaging device 22 for the right eye and the imaging device 22 for the left eye may be arranged asymmetrically left and right. The display device 25 for the right eye and the display device 25 for the left eye may be arranged asymmetrically left and right. The viewing mirror 27 for the right eye and the viewing mirror 27 for the left eye may be arranged asymmetrically left and right.

[0063] The video display device 100 shown in FIG. 1 includes two imaging display units, but the number of imaging display units is not particularly limited. The number of imaging display units may be 1 or a plurality (any number of 2 or more).

Description of Reference Numerals

[0064] 1…Viewpoint, 5A - 5D…Corner (Periphery), 10…Control Device (Control Unit), 20R…Imaging and Display Unit (First Imaging and Display Unit), 20L…Imaging and Display Unit (Second Imaging and Display Unit), 21…Imaging Mirror, 22…Imaging Device (Imaging Unit), 22A…Image Sensor, 25…Display Device (Display Unit), 27…Viewing Mirror, 25a…Display Surface, 25b…Virtual Display Surface, 70…Target Area, 100…Video Display Device, A1…Optical Axis of Imaging Mirror, A2…Optical Axis of Viewing Mirror, E1 - E4…Virtual Lines

Claims

1. comprising one or more imaging display units, wherein the imaging display unit includes an imaging mirror that reflects light from a target area, an imaging unit having an imaging element that images an image from the imaging mirror, a display unit that displays an image captured by the imaging unit, and a viewing mirror that reflects the image displayed on the display unit toward an observer, wherein an optical axis of the imaging mirror coincides with an optical axis of the viewing mirror, an imaging angle of view of the imaging mirror is equal to a display angle of view of an image reflected by the viewing mirror, the imaging element is located at a position optically conjugate with the target area with respect to the imaging mirror, and the display unit is located at a position optically conjugate with the observer with respect to the viewing mirror, a video display device.

2. The plurality of imaging display units include a first imaging display unit that provides an image to the right eye of the observer and a second imaging display unit that provides an image to the left eye of the observer, The video display device according to claim 1.

3. When assuming a virtual display surface optically conjugate with a display surface of the display unit with respect to the viewing mirror, the viewing mirror is arranged by a virtual line passing through a peripheral edge of the virtual display surface and a viewpoint of the observer, The video display device according to claim 1.

4. The imaging display unit further includes a control unit that incorporates a virtual image into the image and displays the image on the display unit, The video display device according to any one of claims 1 to 3.

Images