Display device

Abstract

This display device (HMD (100)) is used by being worn by a user (99). The display device is provided with: two lens barrels of a bottomed cylindrical shape; eye caps having a cylindrical shape that are provided to opening ends of the lens barrels along the opening ends; temple parts that are bendable, the temple parts being worn by the user (99) in an extended state and supporting the lens barrels; a sensor for sensing the state of the display device being worn by the user (99); and a drive mechanism for modifying the orientation of the eye caps from a first orientation to a second orientation if the sensor has sensed that the display device is in a state of having been taken off of the user (99). The first orientation is an orientation for the user (99) to put on the display device, in which interference would occur between the eye caps and the temple parts when being bent, and the second orientation is an orientation in which no interference would occur between the eye caps and the temple parts when being bent.

Description

[Technical Field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] In recent years, there has been active development of so-called head-mounted displays, which are head-mounted display devices. For example, Patent Document 1 discloses a head-mounted display that can present (i.e., display) content images and external world images. The head-mounted display disclosed in Patent Document 1 adjusts the brightness of at least one of the content images and the external world images, thereby reducing the sense of discomfort felt by the user when switching between the content image and the external world image. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-090773 Summary of the Invention [Problem to be solved by the invention]

[0004] However, display devices such as head-mounted displays may not be configured appropriately from the viewpoint of user use.

[0005] The present disclosure has been made in view of the above, and aims to provide a more appropriately configured display device. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, one aspect of a display device according to the present disclosure is a display device that is worn by a user and includes two cylindrical, bottomed lens barrels, each having two display units at its bottom for displaying a first image and a second image, a cylindrical eye cap arranged along the open end of the lens barrel, bendable temple units that are worn by the user in an extended state and support the lens barrel, a detector that detects whether the display device is attached to or detached from the user, and a drive mechanism that changes the position of the eye cap from a first position to a second position when the detector detects that the display device has been detached from the user, wherein the first position is a position in which the user wears the display device, and in which interference occurs between the eye cap and the temple units when bent, and the second position is a position in which no interference occurs between the eye cap and the temple units when bent. [Effects of the Invention]

[0007] According to the present disclosure, a more appropriately configured display device is provided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a head-mounted display according to an embodiment. [Figure 2] FIG. 2 is a diagram showing an example of how the head-mounted display according to the embodiment is worn. [Figure 3A] FIG. 3A is a perspective view showing an eyecup of the head mounted display according to the embodiment. [Figure 3B] FIG. 3B is a top view showing the eyecup of the head mounted display according to the embodiment. [Figure 4] FIG. 4 is a block diagram showing a functional configuration of a display system including a head-mounted display according to an embodiment. [Figure 5A] FIG. 5A is a top view of the head-mounted display according to the embodiment. [Figure 5B] FIG. 5B is a first diagram for explaining an example of the posture of the eye cup of the head mounted display according to the embodiment. [Figure 5C] FIG. 5C is a second diagram for explaining an example of the posture of the eye cups of the head mounted display according to the embodiment. [Figure 6] FIG. 6 is a perspective view showing a drive mechanism of the head mounted display according to the embodiment. [Figure 7] FIG. 7 is a first diagram illustrating a configuration of a sensor of the head mounted display according to the embodiment. [Figure 8] FIG. 8 is a second diagram illustrating the configuration of the sensor of the head mounted display according to the embodiment. [Figure 9] FIG. 9 is a third diagram illustrating the configuration of the sensor of the head mounted display according to the embodiment. [Figure 10] FIG. 10 is a fourth diagram illustrating the configuration of the sensor of the head mounted display according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Knowledge that served as the basis for disclosure) In recent years, display devices have been developed that users can wear on their heads, positioning a display unit in front of their eyes and allowing them to view images displayed on a seemingly large screen. Such display devices are called head-mounted displays (HMDs), and because of their characteristic of allowing users to view images on a seemingly large screen using perspective, many of them have been developed with a focus on high image quality and performance, resulting in a configuration with a large housing. However, such large HMDs have problems such as portability and weight when used in public places such as trains, offices, or outdoors.

[0010] Therefore, in this disclosure, in order to address issues such as portability and weight of the HMD, which is a display device, a glasses-type HMD is realized that uses two cylindrical housings (hereinafter also referred to as lens barrels) that minimally cover two display units (display devices, etc.) corresponding to the user's left and right eyes. Such glasses-type HMDs are aesthetically pleasing and look like large sunglasses, so they are expected to be less noticeable from the surroundings and blend in naturally.

[0011] In such glasses-type HMDs, it is effective to make the temples foldable as a further configuration for increasing portability. However, there are structural issues with the HMD when increasing portability by folding the temples (i.e., making it compact). These will be explained in detail below.

[0012] In order to allow a user to view an image by emitting light toward the user's eyes, as in an HMD, it is necessary to suppress the influence of external light as much as possible. For this reason, eye caps are sometimes provided to create a nearly sealed space between the HMD and the area around the user's eyes. Such eye caps are configured to completely fill the space between the HMD and the user's eyes. For this purpose, the eye caps are configured to cover the gradually expanding space between the HMD and the user's head from between the eyes toward the sides of the eyes. In other words, the eye caps have a long protruding portion that fits the shape of the user's head and extends from the HMD toward the user.

[0013] On the other hand, taking into consideration the alignment of the user's eyes and ears, the temples are provided on the outside in the alignment direction of the two lens barrels corresponding to each of the two eyes. In other words, the temples and the long protruding portions of the eye caps are provided along the alignment direction of the lens barrels. As a result, when the temples are folded inward (i.e., toward the lens barrels) to make the HMD compact, the long protruding portions of the eye caps exist, and the folding mechanism must be designed so as not to interfere with these portions. In other words, the hinge portion for folding the temples is located at a position closer to the user than the long protruding portions of the eye caps. With such a hinge design, even when the temples are folded, a space equal to the length from the tip of the lens barrel to the hinge portion as seen from the user's side is required, and it cannot be said that the design is sufficiently portable. In light of the above, this disclosure describes an HMD that is more portable.

[0014] In addition, the comprehensive or specific aspects of the present disclosure may be realized as a system, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, or may be realized as any combination of a system, a method, an integrated circuit, a computer program, and a recording medium.

[0015] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0016] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement positions, connection forms, steps, and step sequences shown in the following embodiments are merely examples and are not intended to limit the scope of the claims. Furthermore, among the components in the following embodiments, components that are not described in the independent claims are described as optional components.

[0017] It should be noted that the drawings are not necessarily strict illustrations, and the same reference numerals are used to designate substantially the same components in the drawings, and redundant explanations will be omitted or simplified.

[0018] Furthermore, in this specification, terms indicating the relationship between elements, such as parallelism, terms indicating the shape of elements, such as rectangle, as well as numerical values ​​and numerical ranges, are not expressions that only express a strict meaning, but are expressions that also include a substantially equivalent range, for example, differences such as an error of a few percent.

[0019] In addition, in each figure used in the following description, mutually orthogonal X-axis, Y-axis, and Z-axis are used as appropriate to explain the direction of each part of the HMD, etc. The X-axis direction is the left-right direction of the user when the HMD is worn, and in particular, the left side as seen from the user is the positive side of the X-axis direction.

[0020] The Y-axis direction is the front-to-back direction of the user when wearing the HMD, with the rear side of the user being the positive side in the Y-axis direction, and the Z-axis direction is the up-to-down direction of the user when wearing the HMD, with the upper side being the positive side in the Z-axis direction.

[0021] Furthermore, as will be described in detail later, the X-axis direction also coincides with the alignment direction of two lens barrels that are provided in the HMD in this embodiment and aligned to correspond to the left and right eyes of the user. The Y-axis direction is the direction along the barrel axis (or central axis) direction of the lens barrel of the HMD in this embodiment, and the plane that passes through the central axis of each of the two lens barrels is referred to as the alignment plane of the lens barrels (or simply the alignment plane). The alignment plane is usually a plane parallel to the YX plane. The Z-axis direction, which is perpendicular to this alignment plane, is sometimes referred to as the height direction.

[0022] In the following, the left-right direction, front-back direction, and up-down direction, as well as the cylinder axis direction, central axis direction, alignment direction, alignment surface, and height direction, may be used in the explanation without any special mention. Note that these expressions of directions, etc. are used for the convenience of explanation and do not limit the posture, etc., when using the HMD.

[0023] Furthermore, in the HMD of this embodiment, many of the components have a structure with a symmetrical combination of left and right components. Therefore, in some components, the description of one of the left and right combinations may be referred to, and the description of the other may be omitted.

[0024] (Embodiment) [Basic configuration] First, the basic configuration of an HMD according to an embodiment will be described with reference to Fig. 1 to Fig. 4. Fig. 1 is a perspective view of a head-mounted display according to an embodiment. Fig. 2 is a diagram showing an example of how the head-mounted display according to an embodiment is worn.

[0025] As shown in FIG. 1, the HMD 100 according to the embodiment includes a first lens barrel 10, a second lens barrel 20, an adjustment mechanism 31, a support member 41, a first temple portion 15, a second temple portion 25, a first eye cup 14, and a second eye cup 24.

[0026] The first lens barrel 10 is a monocular display module for displaying an image corresponding to, for example, the left eye of a user 99 (see FIG. 2 described later). The first lens barrel 10 is made of a combination of resin and metal materials. The first lens barrel 10 also includes a first display unit (part of display unit 30 in FIG. 4 described later) for displaying a first image corresponding to one eye 95 of the user 99 (see FIG. 2 described later, the left eye in this case), and a first convex lens (part of convex lens 40 in FIG. 4 described later) for enlarging the image displayed on the first display unit. More specifically, the first lens barrel 10 is tubular with a bottom and has the first display unit at its bottom.

[0027] Furthermore, the first lens barrel 10 is composed of a first main section 11, a first sub-section 12, and a first panel 13. As shown in the figure, the first lens barrel 10 has a double-bottom structure composed of the first main section 11, the first sub-section 12, and the first panel 13. As shown in the figure, the first main section 11, the first sub-section 12, and the first panel 13 are composed of separate members. In the following description, the first lens barrel 10 is described as having a bottomed cylindrical structure with a double bottom, but the HMD of the present disclosure may also be a bottomed cylindrical structure with a single bottom composed solely of the first main section 11. There are no particular limitations on the configuration of the bottom of such a first lens barrel 10, and an HMD can be realized with a multiple-bottom configuration that houses multiple functional sections, respectively.

[0028] The first display unit and the first convex lens are disposed inside a cylindrical first main portion 11 that opens toward the positive side in the Y-axis direction. The first convex lens may be formed of a single lens or a combination of two or more lenses. In other words, the first convex lens may be a lens unit having multiple lenses.

[0029] The second lens barrel 20 is a monocular display module for displaying an image corresponding to, for example, the right eye of the user 99. The second lens barrel 20 is made of a combination of resin and metal materials. The second lens barrel 20 also has therein a second display unit (part of display unit 30 in FIG. 4 described later) for displaying a second image corresponding to the other eye 95 (here, the right eye) of the user 99, and a second convex lens (part of convex lens 40 in FIG. 4 described later) for enlarging the image displayed on the second display unit. More specifically, the second lens barrel 20 has a cylindrical shape with a bottom, and has the second display unit at its bottom.

[0030] The second lens barrel 20 is composed of a second main section 21, a second sub-section 22, and a second panel 23. The second display section and the second convex lens are disposed inside the cylindrical second main section 21 that opens toward the positive side in the Y-axis direction.

[0031] The first lens barrel 10 and the second lens barrel 20 are connected to each other by an adjustment mechanism 31 and a support member 41.

[0032] The support member 41 is a rod-shaped member elongated along the alignment direction and having an outer diameter smaller than the inner diameter of the holes formed in the first lens barrel 10 and the second lens barrel 20. For example, the support member 41 is formed of a metal material such as aluminum or stainless steel. The support member 41 is inserted into the holes formed in each lens barrel. As a result, the support member 41 supports each of the first lens barrel 10 and the second lens barrel 20. The relative positions of the first lens barrel 10 and the second lens barrel 20 change depending on the insertion length of the support member 41 into the holes formed in each lens barrel. An internal space is formed in the support member 41. For example, the internal space accommodates internal wiring 41a, as shown in the bb cross-sectional view of (b) in the figure, with a circular cross section.

[0033] As in the HMD 100 of this embodiment, the support member 41 is one of a limited number of components connecting the first lens barrel 10 and the second lens barrel 20, and is therefore used to arrange components for communication necessary between the first lens barrel 10 and the second lens barrel 20, such as the internal wiring 41a described above. Furthermore, similar internal wiring may be accommodated in a space provided inside the adjustment mechanism 31. The wires used for wiring are components that spoil the aesthetic appearance if placed in a visible position and are also components that are at risk of breaking, etc. Therefore, by accommodating them inside another component in this way, the aesthetic appearance is not spoiled and the possibility of functional damage such as breaking can be reduced.

[0034] As shown in the aa cross-sectional view shown in (a) of the figure, the adjustment mechanism 31 provided between the first lens barrel 10 and the second lens barrel 20 includes an adjustment member 32 that is elongated in the X-axis direction, a screw hole 36 that is embedded in the first lens barrel 10 and has a first spiral thread groove, and a screw hole 35 that is embedded in the second lens barrel 20 and has a second spiral thread groove. The adjustment member 32 has threads on both ends in the X-axis direction. Specifically, the adjustment member 32 has a screw portion 34 consisting of a first spiral thread at one end on the positive side in the X-axis direction, and a screw portion 33 consisting of a second spiral thread at the other end on the negative side in the X-axis direction.

[0035] Corresponding screw portions are screwed into the screw holes embedded in the first lens barrel 10 and the second lens barrel 20, and the screw portions are inserted into and removed from the screw holes by rotating the adjustment member 32 around an axis parallel to the X-axis direction.

[0036] These screw holes are provided, for example, in the first sub-portion 12 of the first lens barrel 10 or the second sub-portion 22 of the second lens barrel 20. In particular, by providing the screw holes a sufficient length from the surface of the first sub-portion 12 or the second sub-portion 22 inward, the threaded portions are less likely to protrude from the first sub-portion 12 or the second sub-portion 22 during insertion or removal, which not only provides an excellent aesthetic appearance but also suppresses malfunctions of the adjustment mechanism 31 due to the intrusion of foreign matter.

[0037] A knob member 32a is attached to the adjustment member 32 near the center in the longitudinal direction to improve the operability of the adjustment member 32. The knob member 32a is a cylindrical member, and its inner diameter matches the outer diameter of the adjustment member 32. As a result, the adjustment member 32 is fixed by being press-fitted into the knob member 32a, and the adjustment member 32 becomes thicker by the thickness of the knob member 32a, improving the operability when rotating the adjustment member 32.

[0038] Furthermore, knob member 32a is composed of two members divided in half in the X-axis direction via a fixing member that is part of support member 41 and protrudes from the main portion of support member 41 toward the adjustment member. The fixing member protruding from the main portion of support member 41 has an insertion hole with an inner diameter that is sufficiently larger than the outer diameter of adjustment member 32 (in other words, there is at least a gap between them that prevents them from contacting each other). Adjustment member 32 is inserted into the insertion hole of the fixing member, and the two members of knob member 32a are press-fitted so as to sandwich the fixing member from both sides in the X-axis direction.

[0039] As a result, even when inserted into the fixed member, the adjustment member 32 can rotate about an axis parallel to the X-axis direction, and the contact of the knob member 32a fixes the position of the adjustment member 32 relative to the fixed member in the X-axis direction. Furthermore, because the adjustment member 32 is inserted into the insertion hole of the fixed member, its movement relative to the fixed member is also limited in the Z-axis and Y-axis directions.

[0040] Therefore, the presence of the fixing member fixes the relative position of the adjustment member 32 with respect to the support member 41 in the X-axis direction.

[0041] The first temple portion 15 has a front end connected to the first main portion 11 of the first lens barrel 10 and a rear end engaged with the auricle of the user 99, for example, the left ear. The first temple portion 15 is made of a combination of metal and resin. The first temple portion 15 is configured by rotatably connecting a first front temple portion 18 at the front end, a cover 19 provided on the front end side of the first front temple portion 18, and a first rear temple portion 16 at the rear end via a hinge portion 17. The hinge portion 17 includes a rod-shaped member forming a rotation axis, a connecting member that rotatably connects the first front temple portion 18 to the rod-shaped member, and a connecting member that rotatably connects the first rear temple portion 16 to the rod-shaped member.

[0042] The cover 19 is also configured to transmit light of certain wavelengths, allowing a camera provided inside the cover 19 to capture images of the outside.

[0043] The first temple portion 15 can be bent by rotating the first rear temple portion 16 relative to the first front temple portion 18 around an axis parallel to the Z axis in the figure. When using the HMD 100, the user 99 wears the HMD 100 with this bending mechanism extended. The first temple portion 15 can be bent only in a direction approaching the second temple portion 25 (described later) (counterclockwise as viewed from the positive side of the Z axis direction), and cannot be rotated in the opposite direction. This improves the ease with which the first temple portion 15 can be fastened to the ear 96 of the user 99.

[0044] The second temple portion 25 has a front end connected to the second main portion 21 of the second lens barrel 20 and a rear end engaged with the auricle of the user 99, for example, the right ear. The second temple portion 25 is made of a combination of metal and resin. The second temple portion 25 is configured by rotatably connecting a second front temple portion 28 at the front end, a cover 29 provided on the front end side of the second front temple portion 28, and a second rear temple portion 26 at the rear end via a hinge portion 27. The hinge portion 27 includes a rod-shaped member forming a rotation axis, a connecting member that rotatably connects the second front temple portion 28 to the rod-shaped member, and a connecting member that rotatably connects the second rear temple portion 26 to the rod-shaped member.

[0045] The cover 29 is also configured to transmit light of certain wavelengths, allowing a camera provided inside the cover 29 to capture images of the outside.

[0046] The wiring 73 is connected to the second temple portion 25 and is connected to internal wiring that passes through the interior of the second rear temple portion 26, the hinge portion 27, and the second front temple portion 28. This internal wiring further extends to the first lens barrel 10 through the second lens barrel 20 and the internal space of the support member 41. In this manner, the wiring 73 is electrically connected to the internal wiring of the HMD 100. Power for driving the HMD 100 and signal information indicating content to be presented to the user 99 using the HMD 100 are supplied to the wiring 73 from an external device.

[0047] The second temple portion 25 can be folded by rotating the second rear temple portion 26 relative to the second front temple portion 28 around an axis parallel to the Z axis in the figure. When using the HMD 100, the user 99 wears the HMD 100 with this folding mechanism extended, similar to the first temple portion 15. Furthermore, the second temple portion 25 can only be folded in the direction approaching the first temple portion 15 (clockwise as viewed from the positive side of the Z axis direction) and cannot be rotated in the opposite direction. This improves the ease with which the second temple portion 25 can be fastened to the ear 96 of the user 99.

[0048] 1, the first temple portion 15 and the second temple portion 25 are curved so that their rear ends approach each other. In other words, each temple portion is curved toward the inside of the HMD 100 where the head of the user 99 is positioned. As a result, the first temple portion 15 and the second temple portion 25 each press the back of the head of the user 99 inward and forward, and the first lens barrel 10 and the second lens barrel 20 are pulled so as to be pressed against the head of the user 99. Therefore, the curved shapes of the first temple portion 15 and the second temple portion 25 prevent the HMD 100 from falling off when worn, contributing to improved wearability.

[0049] The first eyecap 14 is a cylindrical member interposed between the first lens barrel 10 and the head of the user 99. The first eyecap 14 is detachably attached to the first lens barrel 10. For example, when the HMD 100 is shared by multiple users 99, indirect contact between the users 99 via the first lens barrel 10 can be reduced by simply replacing the first eyecap 14. The first eyecap 14 is attached by being inserted from the opening side of the first main portion 11 of the first lens barrel 10 toward the negative Y-axis direction. As a result, the first eyecap 14 protrudes outward from the opening end of the first lens barrel 10 (i.e., toward the user 99) and is provided along the opening end. In this way, the first eyecap 14, which is the main body that comes into contact with the user 99, can be removed for cleaning, etc., so that the HMD 100 can be kept clean without cleaning the entire HMD 100.

[0050] The second eyecap 24 is a cylindrical member interposed between the second lens barrel 20 and the head of the user 99. The second eyecap 24 is detachably attached to the second lens barrel 20. For example, when the HMD 100 is shared by multiple users 99, indirect contact between the users 99 via the second lens barrel 20 can be reduced by simply replacing the second eyecap 24. The second eyecap 24 is attached by being inserted from the opening side of the second main portion 21 of the second lens barrel 20 toward the negative Y-axis direction. As a result, the second eyecap 24 protrudes outward (i.e., toward the user 99) from the opening end of the second lens barrel 20 and is provided along the opening end. In this way, the second eyecap 24, which is the main body that comes into contact with the user 99, can be removed for cleaning, etc., so that the HMD 100 can be kept clean without cleaning the entire HMD 100.

[0051] The cylindrical shapes of the first eyecup 14 and the second eyecup 24 do not have to be perfect cylinders, and may be, for example, curved plates with a partial opening when viewed from the direction of the cylinder axis. However, in order to deliver light from the display unit of the HMD 100 to the eyes 95 of the user 99 while reducing the influence of external light, it is desirable for these eyecups to have a shape that widely covers the area between the HMD 100 and the eyes 95 of the user 99, as shown in FIG. 2, for example. For this reason, the first eyecup 14 and the second eyecup 24 in this embodiment are cylindrical shapes that surround the open ends of the first lens barrel 10 and the second lens barrel 20, respectively.

[0052] Fig. 3A is a perspective view showing an eyecup of the head mounted display according to the embodiment, and Fig. 3B is a top view showing the eyecup of the head mounted display according to the embodiment.

[0053] The eye cap in this embodiment prevents direct contact between the user 99 and the first lens barrel. The eye cap is configured to cover one eye 95 of the user 99, and is configured to be interposed between the user 99 and the lens barrel, filling the gap between the user 99 and the lens barrel. The eye cap is made of an elastically deformable material such as silicone rubber that has light-blocking properties. Alternatively, the eye cap may be made of a sponge-like resin material.

[0054] 3A and 3B, the first eye cap 14 in this embodiment has a cylindrical first insertion portion 14a that is inserted into the first lens barrel 10, particularly the first main portion 11, and a curved plate-like first cap portion 14b that extends from the end on the opening side of the first main portion 11 toward the outside of the tube (the positive side in the Y-axis direction) and has a size that reaches the head of the user 99 when wearing the HMD 100. In addition, the first cap portion 14b is curved along the curve from around the eyes 95 of the user 99 to the temporal region of the head. 3B , the first eyecup 14 has a cylindrical shape in which a first portion (on the right side of the drawing) extending from the first lens barrel 10 by a first length along the axial direction of the first lens barrel 10 and a second portion (on the left side of the drawing) extending from the first lens barrel 10 by a second length longer than the first length along the axial direction of the first lens barrel 10 are connected to form a common cylindrical axis with the first lens barrel 10. The first length corresponds to the distance between the first lens barrel 10 and the head surface on the inner corner side of the user's 99 eye 95 (the bridge of the nose). The second length corresponds to the distance between the first lens barrel 10 and the head surface on the outer corner side of the user's 99 eye 95 (the temporal region).

[0055] Furthermore, the contact end side of the first cap portion 14b that comes into contact with the user 99 has a planar shape to increase the contact area. Here, the first cap portion 14b continuously covers the area between the curved contact end that fits along the head of the user 99 and the connection end that connects to the first insertion portion 14a. As a result, the first cap portion 14b has the function of connecting the separated first lens barrel 10 and the head of the user 99 to block external light from entering the field of view.

[0056] A first constricted portion 14c having an outer periphery smaller than the outer periphery of the first insertion portion 14a and the outer periphery of the first cap portion 14b is formed between the first insertion portion 14a and the first cap portion 14b. In other words, the first constricted portion 14c is a thin-walled portion that is constricted around the entire outer periphery of the first eyecap 14. The formation of the first constricted portion 14c provides the first eyecap 14 with flexibility to bend in the up / down and left / right directions. Here, the flexibility of the first eyecap 14 in the up / down direction is useful because it improves the fit for the user 99 without affecting the left / right parallax of the HMD 100, but the flexibility of the first eyecap 14 in the left / right direction may affect the left / right parallax of the HMD 100.

[0057] Therefore, a first thick portion 14d is formed in the first eye cap 14 at the point where the first constricted portion 14c intersects with a line passing through the center of the constricted portion in the height direction and aligned in the alignment direction (i.e., where the first constricted portion 14c intersects with the alignment surface). The first thick portion 14d is formed integrally with the first eye cap 14 so as to fill the first constricted portion 14c within the alignment surface. The first thick portion 14d has a tapered shape that expands in diameter toward the negative Y-axis direction of the first lens barrel 10. As a result, the first cap portion 14b presses the first thick portion 14d toward the negative Y-axis direction at one end of the tapered portion, where the diameter is reduced, and the pressure of this pressure is supported by the other end, where the diameter is increased. In other words, the fulcrum becomes smaller and clearer, promoting bending of the first cap portion 14b in a direction away from the fulcrum. As a result, the first cap portion 14b is configured to be easily bent in the vertical direction.

[0058] First thick portion 14d supports first cap portion 14b from the first insertion portion 14a side so as to resist bending of first eye cap 14 in the left-right direction. To further strengthen such support of first cap portion 14b, first cap portion 14b has first flat plate portion 14e that extends outward from first thick portion 14d along the XZ plane intersecting the central axis of first lens barrel 10 and is connected to the first cap portion. A seesaw-like structure is formed in which bending of first eye cap 14 is supported by first flat plate portion 14e, and bending in the left-right direction is firmly suppressed while bending in the up-down direction is likely to occur while maintaining the shape of first cap portion 14b.

[0059] Additionally, the eye cap may be provided with ventilation holes to prevent moisture from building up in the space formed between the eye cap and the user 99.

[0060] The functional configuration of the HMD 100 according to this embodiment will be described below with reference to Fig. 4. Fig. 4 is a block diagram showing the functional configuration of a display system including a head-mounted display according to this embodiment.

[0061] A power supply 91 and a signal processing circuit 92 are connected to the HMD 100 via a connector 75 and a plug 75a. The power supply 91 and the signal processing circuit 92 are external devices connected to the HMD 100.

[0062] The power supply 91 is a device that supplies power for the HMD 100 to perform various operations. The power supply 91 is, for example, an AC-DC converter that converts household AC power and generates DC power of a voltage necessary for the operation of the HMD 100. The power supply 91 may also be, for example, a battery that discharges stored power as DC, or a solar cell that supplies power generated using solar energy. The power supply 91 may also be a battery that is built into the HMD 100, or a solar cell that is attached to the outer surface of the HMD 100. The HMD 100 may also be supplied with power by wireless transmission without using the plug 75a and the connector 75.

[0063] The signal processing circuit 92 is a device that supplies image information indicating an image to be displayed to the HMD 100 via communication. The signal processing circuit 92 supplies the image information as a digital signal, but may also supply the image information as an analog signal. Alternatively, the image information may be stored in the HMD 100, and the image may be displayed offline when the plug 75a and the connector 75 are disconnected. Alternatively, image information generated in real time may be supplied to the HMD 100 one by one and displayed online when the plug 75a and the connector 75 are maintained connected. Such image information may also be supplied via wireless communication.

[0064] 1, a wiring 73 having a connector 75 at its tip for performing at least one of the above-mentioned communication and power supply is connected to the second temple portion 25 around the right ear of the user 99 when the HMD 100 is worn. The wiring 73 extends rearward beyond the right ear. For example, the second rear temple portion 26 of the HMD 100 is connected to a connector box or the like in which the connector 75 is provided, via the wiring 73 which is designed to be approximately 10 cm to 15 cm long from the standpoints of positioning and handling.

[0065] The connector box is an operation unit of the HMD 100 provided with a connector 75. The connector box is provided with operation buttons that accept input from the user 99 to operate the HMD 100, an audio jack for outputting audio signals, and the like. Power supplied from an external device and image information supplied thereto are transmitted to the drive circuit 38 via internal wiring and the like. More specifically, the image information is transmitted to the drive circuit 38 via a processing unit 38a as shown in FIG. 4. The processing unit 38a is a processing device that processes image information to be displayed on the display unit 30 of the HMD 100, converts it into an analog signal, and performs various image adjustment processes. The processing unit 38a is realized by a processor, a memory, and an image processing program stored in the memory.

[0066] In this way, an image is displayed on the display unit 30 based on the image information that has reached the drive circuit 38 as an analog signal. Specifically, the drive circuit 38 drives the display panel 39 to emit light representing an image. The light is condensed by the convex lens 40 and viewed by the eye 95 of the user 99.

[0067] The drive circuit 38 is a circuit device for driving the display panel 39. The display panel 39 is, for example, a liquid crystal panel, an organic EL panel, a micro LED panel, or the like. In addition to the display unit 30 using such a drive circuit 38 and the display panel 39, a retinal projection type laser projector or the like may also be used as the display unit 30.

[0068] 5A is a top view of the head-mounted display according to the embodiment. Fig. 5A shows the HMD 100 as viewed from the positive side in the Z-axis direction. Fig. 5A shows the positions of the first rear temple portion when folded as first position 16a and second position 16b.

[0069] As shown in FIG. 5A, if the first eyecup 14 is left in its original state, the second portion of the first eyecup 14 that protrudes further from the first lens barrel 10 interferes with the first rear temple portion 16, and the first eyecup 14 can only be folded to the first position 16a. From the perspective of improving the portability of the HMD 100, it is desirable to fold the first rear temple portion 16 to the second position 16b. The same applies to the second rear temple portion 26. Therefore, the HMD 100 detects that the HMD 100 has been removed from the user 99 and changes the position of the eyecup before folding the temple portions.

[0070] 5B is a first diagram for explaining an example of the posture of the eye cap of the head-mounted display according to the embodiment. Note that FIG. 5B omits the illustration of each component of the HMD 100 other than the first eye cap 14 and a part of the first temple portion 15. For example, when the HMD 100 detects that the HMD 100 has been removed from the user 99, the HMD 100 rotates the eye cap around the cylindrical axis to change its posture. At this time, as shown in FIG. 5B , for example, the HMD 100 changes its posture by rotating the eye cap around the cylindrical axis by 90 degrees (hereinafter referred to as an example of a second posture) from the posture when the HMD 100 is worn by the user 99 (hereinafter referred to as a first posture).

[0071] 5C is a second diagram for explaining an example of the posture of the eye cap of the head-mounted display according to the embodiment. Note that FIG. 5C omits the illustration of each component of the HMD 100 other than the first eye cap 14 and a part of the first temple portion 15. For example, when the HMD 100 detects that the HMD 100 has been removed from the user 99, the HMD 100 rotates the eye cap around the cylindrical axis to change its posture. At this time, as shown in FIG. 5C , for example, the HMD 100 changes its posture by rotating the eye cap 180 degrees around the cylindrical axis (hereinafter referred to as an example of a second posture) from the posture when the HMD 100 is worn by the user 99 (hereinafter referred to as a first posture).

[0072] In this embodiment, the eye cap rotates around the cylindrical axis as described above to change its position from the first position when worn to the second position. Note that the rotation angle of the eye cap (i.e., the angle difference between the first position and the second position) is not limited to 90 degrees or 180 degrees. The rotation angle of the eye cap will be described in detail later.

[0073] In this way, by changing the posture of the eye caps after detecting the removal of the HMD 100, it is possible to prevent the posture of the eye caps from being changed while the user 99 is wearing them. To achieve the above, the HMD 100 includes a detector that detects whether the HMD 100 is attached to or detached from the user 99, and a drive mechanism 60 that changes the posture of the first eye cap 14 and the second eye cap 24 to prevent interference with the rear temple portion, thereby bringing the folding position closer to the second position 16b.

[0074] The detector and the drive mechanism 60 will be described with reference to Fig. 6. Fig. 6 is a perspective view showing the drive mechanism of the head mounted display according to the embodiment. In Fig. 6, components other than the first rear temple portion 16, the drive mechanism 60, and the first eye cup 14 are not shown.

[0075] As shown in FIG. 6, the drive mechanism 60 is built into the temple portion and is composed of several gears and a rod 61 for driving these gears. The rod 61 is connected to the first rear temple portion 16 near the first hinge portion 17. The rod 61 is rotatably fixed at a position offset from the rotation axis of the first rear temple portion. When the first rear temple portion 16 rotates, the rod 61 moves rearward outside the rotation axis of the first rear temple portion 16. In other words, the rod 61 is pulled rearward.

[0076] The movement of the rod 61 is then transmitted to the first gear 62. The first gear 62 is a gear that rotates within the XY plane. The first gear 62 is connected to the rod 61 on the positive side in the X axis direction, and a crown gear for power transmission is formed on the negative side in the X axis direction. When the rod 61 is pulled backward, the first gear 62 rotates counterclockwise as viewed from the positive side in the Z axis direction.

[0077] The rotation of the first gear 62 is then transmitted to the second gear 63. The second gear 63 is a gear that rotates within the YZ plane. The second gear 63 is connected to the first gear 62 on the positive side of the X axis, and a crown gear for power transmission is formed on the negative side of the X axis. When the first gear 62 rotates counterclockwise as viewed from the positive side of the Z axis, the second gear 63 rotates clockwise as viewed from the positive side of the X axis.

[0078] The rotation of the second gear 63 is then transmitted to the third gear 64. The third gear 64 is a gear that rotates within the XZ plane. The third gear 64 is connected to the second gear 63 on the positive side of the X axis direction, and a spur gear for power transmission is formed within the XZ plane. When the second gear 63 rotates clockwise as viewed from the positive side of the X axis direction, the third gear 64 rotates counterclockwise as viewed from the positive side of the Y axis direction.

[0079] The rotation of the third gear 64 is then transmitted to the cap support ring 65. The cap support ring 65 is an annular member having a gear that rotates within the XZ plane. The cap support ring 65 is connected to the third gear 64 on the positive side of the X axis direction, and the first eye cap 14 is connected to the positive side of the Y axis direction. When the third gear 64 rotates counterclockwise as viewed from the positive side of the Y axis direction, the cap support ring 65 rotates clockwise as viewed from the positive side of the Y axis direction. Depending on the gear ratio between the cap support ring 65 and the third gear 64, the rotation angle of the first eye cap 14 can be set to 90 degrees as shown in FIG. 5B, 180 degrees as shown in FIG. 5C, or any other angle not shown.

[0080] When the HMD 100 is in use, the first eye cap 14 has a first portion with a first length and a second portion with a second length aligned in the X-axis direction. When the first rear temple portion 16 is bent to the second position 16b, the first eye cap 14 intersects with the cylindrical axis direction of the first eye cap 14 and extends in a direction parallel to the alignment of the first portion and the second portion when viewed from the positive side of the Y-axis direction. Therefore, if the first eye cap 14 is in the same position (first position) as when the HMD 100 is in use, interference shown in FIG. 5A occurs between the first eye cap 14 and the first rear temple portion 16. In particular, the second portion with the second length is positioned closer to the first temple portion 15 in accordance with the curved surface of the user's 99's face from the front to the side. In other words, the second portion is positioned closer to the rotation axis of the first rear temple portion 16. This makes the interference shown in FIG. 5A more likely to occur.

[0081] On the other hand, in the HMD 100 of the present embodiment, as shown in FIG. 6 , when the first rear temple portion 16 is bent, the first eye cap 14 rotates in conjunction with the first eye cap 14, so that the direction in which the first and second portions are aligned and the direction in which the first rear temple portion 16 extends are no longer parallel. For example, as shown in FIG. 5B , when the second posture corresponds to a rotation angle of 90 degrees, the direction in which the first and second portions are aligned and the direction in which the first rear temple portion 16 extends intersect at an angle of 90 degrees. In other words, the direction in which the first and second portions are aligned and the direction in which the first rear temple portion 16 extends intersect at an angle corresponding to the rotation angle of the eye cap in the second posture. As a result, the second portion of the first eye cap 14 moves away from the spatial position in which the first rear temple portion 16 extends when bent, in a direction intersecting the direction in which the first rear temple portion 16 extends. This reduces interference between the first rear temple portion 16 and the first eye cup 14, and the first rear temple portion 16 can be folded up to the second position 16b. In this way, the HMD 100 can be made more compact by folding the temple portions, thereby improving portability.

[0082] 5C, for example, when the second posture corresponds to a rotation angle of 180 degrees, the direction in which the first and second portions are aligned remains parallel to the direction in which the first rear temple portion 16 extends. However, the first and second portions of the first eyecup 14 are swapped in position. That is, the first portion of the first eyecup 14 is disposed closer to the first temple portion 15, and the second portion is disposed farther from the first temple portion 15. The farther side from the first temple portion 15 is between the first lens barrel 10 and the second lens barrel 20, i.e., a position closer to the center of the HMD 100 in the alignment direction.

[0083] In the HMD 100, the temples extend in a curved manner along the curved surface on the side of the user 99's face. More specifically, the portions near the center of the temples bulge outward from the HMD 100, and the free ends (rear ends) of the temples contract toward the inside of the HMD 100. For example, as shown in FIG. 5A , when the first rear temple portion 16 is bent, it curves away from the first lens barrel 10, i.e., away from the first eyecup 14, at a position close to the center of the HMD 100 in the alignment direction. Therefore, when the second posture corresponds to a rotation angle of 180 degrees, the second portion located close to the center of the HMD 100 in the alignment direction is accommodated inside the curve that curves away from the first eyecup 14. Therefore, even in this case, interference between the first rear temple portion 16 and the first eyecup 14 is suppressed, and the first rear temple portion 16 can be bent to the second position 16b.

[0084] In this way, the rotation angle of the eye cap in the second position may be any angle as long as there is no interference between the eye cap after the position change and the temple portion when folded. For example, depending on the length of the second portion, it is possible to set the second position as a position corresponding to any angle greater than 0 degrees and less than 360 degrees with respect to the first position. Note that the above description of the first eye cap 14 and first temple portion 15 also applies to the second eye cap 24 and second temple portion 25.

[0085] 6, the detector is composed of a temple portion and a drive mechanism 60, and is a detection mechanism that structurally detects the start of bending of the temple portion, thereby detecting that the HMD 100 has been removed from the user 99. Therefore, this detector also functions as a drive source that drives the rod 61.

[0086] Note that instead of such a detector that performs structural detection, a detector that performs detection by sensing (i.e., a sensor) may be used. For example, to detect the start of bending of the temple portion, a switch sensor may be disposed in the hinge portion and configured to be pressed when bending of the temple portion begins. In this case, the rod 61 may be driven by an actuator using a signal generated when the switch sensor is pressed. Furthermore, when an actuator is used, any component of the drive mechanism 60 may be driven. For example, the second gear 63 may be rotated by a motor serving as an actuator (for example, a motor similar to the motor 66 in FIG. 10 described later).

[0087] An example of using a sensor that performs detection by sensing will be described below with reference to Fig. 7 to Fig. 10. Fig. 7 is a first diagram illustrating the configuration of a sensor of the head mounted display according to the embodiment.

[0088] In the HMD 100 shown in FIG. 7, the first panel 13 of the first lens barrel 10 has been removed, revealing the internal configuration of the first panel 13. Here, a first sound collector 53 and a second sound collector 54 are arranged inside the first panel 13. Each of the first sound collector 53 and the second sound collector 54 is arranged so as to collect sound that enters through a gap between the first panel 13 and the first sub-unit 12 when the first panel 13 is attached. Therefore, these sound collectors are difficult to see from outside the HMD 100, thereby achieving an HMD 100 with excellent aesthetics. A third sound collector and a fourth sound collector are also arranged in the second lens barrel 20 so as to be symmetrical to these sound collectors.

[0089] As shown in the figure, a fifth sound collector 55 is disposed on the first temple portion 15, particularly on the first front temple portion 18. The fifth sound collector 55 is disposed, for example, so as to collect sound entering through a sound collection hole formed on the lower surface of the first front temple portion 18. This makes the fifth sound collector 55 less visible from outside the HMD 100, thereby achieving an HMD 100 with excellent aesthetics. A sixth sound collector is also disposed on the second front temple portion 28, symmetrically to the fifth sound collector 55. Each of the six sound collectors described above is configured to collect ultrasonic waves (also referred to as specific ultrasonic waves) generated based on a specific frequency, period, timing, or the like.

[0090] When using the HMD 100, the user 99 may hold a controller in each of his or her left and right hands, each of which has a built-in transmitter that generates specific ultrasonic waves. In this case, the specific ultrasonic waves generated from the controller are picked up by six sound collectors, and the relative position of the controller with respect to the HMD 100 can be calculated from the phase difference, arrival time, etc. Because the controller is held in each of the user 99's left and right hands, the movement of the user 99's hands can be detected from the relative positions of the controllers. In this way, the HMD 100 can perform processing such as input to content (for example, changing the image displayed on the display unit) based on the position of the user 99's hands.

[0091] It is preferable that the six sound collectors are arranged at a distance from each other. However, because the HMD 100 has a configuration in which two lens barrels are supported by a rod-shaped support member 41 in relation to the wearability for the user 99 and the appearance characteristics, there are restrictions on the arrangement of the sound collectors. Therefore, in the HMD 100, as shown in the figure, a first sound collector 53 and a second sound collector 54 are arranged at the bottom end of the first lens barrel 10 and at the end opposite the second lens barrel 20, respectively. A third sound collector and a fourth sound collector are also arranged in a similar symmetrical arrangement on the second lens barrel 20.

[0092] Furthermore, while the above four sound collectors are arranged on approximately the same plane parallel to the XZ plane, a fifth sound collector 55 is arranged on the first front temple part 18 so as to be positioned outside the plane. A sixth sound collector is similarly arranged on the second front temple part 28. In this way, the six sound collectors are arranged so as to be spaced apart from one another within the limited components of the HMD 100.

[0093] The detector here detects that the HMD 100 has been removed from the user 99 when there is a change in the positional relationship between the sound collector and the controller, i.e., when the amount of change in the spatial position of the HMD 100 is equal to or less than a predetermined amount that can be considered to be 0. Thereafter, a signal for driving the drive mechanism 60 is output, and the drive mechanism 60 is driven via the actuator.

[0094] FIG. 8 is a second diagram illustrating the configuration of the sensor of the head mounted display according to the embodiment.

[0095] The HMD 100 shown in FIG. 8 has an eye tracker 81 built into the first lens barrel 10, which is composed of a light source and an imager. The eye tracker 81 is used to detect the direction of the user's gaze when the user 99 looks at the display unit inside the lens barrel, and is used to change the content according to the direction of the user's gaze. By using the eye tracker 81 here, it is possible to detect when the HMD 100 is removed from the user 99. Specifically, if the eye tracker 81 fails to detect the user's gaze, it is detected that the user's 99 eyes 95 are outside the range detectable by the eye tracker, that is, the HMD 100 is removed. After that, a signal for driving the drive mechanism 60 is output, and the drive mechanism 60 is driven via an actuator.

[0096] FIG. 9 is a third diagram illustrating the configuration of a sensor of the head mounted display according to the embodiment.

[0097] 9 shows the HMD 100 having a proximity sensor 71 including an infrared light source and an imager built into the first rear temple portion 16. By using this proximity sensor 71, it is possible to detect the removal of the HMD 100 from the user 99. Specifically, when the distance between the HMD 100 and the user 99 measured by the proximity sensor 71 is not within a predetermined distance at which the HMD 100 can be considered to be worn, it is detected that the HMD 100 has been removed from the user 99. Thereafter, a signal for driving the drive mechanism 60 is output, and the drive mechanism 60 is driven via an actuator.

[0098] 10 is a fourth diagram illustrating the configuration of the sensor of the head-mounted display according to the embodiment. Note that in FIG. 10, only outlines of the drive mechanism 60, motor 66, power switch 67, and other components of the first eye cup 14 are shown by dashed lines for ease of reading.

[0099] In the HMD 100 shown in FIG. 10 , a switch sensor is provided on the power switch 67 to detect the end of use of the HMD 100. When the user 99 operates the power switch to turn the power off, the switch sensor generates a signal. This signal can be used to rotate the second gear 63 by the motor 66, which serves as an actuator. As a result, the drive mechanism 60 is driven. Note that the power used to drive the motor 66 after the power is turned off may be stored in a power storage element such as a battery or a capacitor (neither of which are shown). Furthermore, if the power-off state of the HMD 100 is simply a standby mode in which power can be conducted, it is also possible to use power supplied from the power source 91 via the wiring 73 even after the projection of an image on the display panel 39 has ended.

[0100] [Effects, etc.] As described above, the display device (HMD 100) in this embodiment is an HMD 100 worn by a user 99, and includes two cylindrical, bottomed lens barrels (first lens barrel 10 and second lens barrel 20) each having two display units at the bottom for displaying a first image and a second image, cylindrical eye caps (first eye cap 14 and second eye cap 24) provided along the open ends (ends on the positive side in the Y-axis direction) of the lens barrels, and bendable temples (first temple 15 and second temple 25) that can be extended. the temples being worn by the user 99 in a folded state and supporting the eyecup barrel; a detector for detecting whether the HMD 100 is attached to or detached from the user 99; and a drive mechanism 60 for changing the position of the eyecup from a first position to a second position when the detector detects that the HMD 100 has been detached from the user 99, the first position being a position in which the user 99 wears the HMD 100 and in which interference occurs between the eyecup and the temples when folded, and the second position being a position in which interference does not occur between the eyecup and the temples when folded.

[0101] For example, when the first temple portion 15 is folded while the first eyecap 14 is in the first position, the first temple portion 15 interferes with the first eyecap 14, and when the second temple portion 25 is folded while the second eyecap 24 is in the first position, the second temple portion 25 interferes with the second eyecap 24. For this reason, in conventional HMDs, it has been impossible to fold the temple portions compactly. In particular, when the eyecaps are in the first position, a cap portion (e.g., the first cap portion 14b of the first eyecap 14) configured to continuously cover the sides of the user's eyes 95 up to the vicinity of the ears 96 in order to improve light blocking performance when the HMD 100 is in use interferes with the spatial position of the temple portions when folded.

[0102] In contrast, the HMD 100 described above detects that the user 99 has removed the HMD 100 before folding the first temple portion 15 and the second temple portion 25, and changes the first eyecap 14 and the second eyecap 24 to the second position. In this second position, the first eyecap 14 and the second eyecap 24 do not interfere with the spatial positions of the first temple portion 15 and the second temple portion 25 when they are folded. Therefore, the temple portions can be folded without considering interference between the first temple portion 15 and the first eyecap 14, and between the second temple portion 25 and the second eyecap 24. However, since the second position may not be appropriate for wearing the HMD 100, the HMD 100 changes the eyecaps from the first position to the second position after detecting that the user 99 has removed the HMD 100. In this way, the temples of the HMD 100 can be folded appropriately, and the HMD 100 can be made more compact, which makes it possible to improve the portability of the HMD 100.

[0103] Also, for example, the eye cap may be configured such that a first portion extending from the lens barrel by a first length along the axial direction of the lens barrel and a second portion extending from the lens barrel by a second length longer than the first length along the axial direction of the lens barrel are connected in a cylindrical shape that shares the axial direction with the lens barrel, and when folded, the temple portion extends at a position farther from the lens barrel than the first length and closer than the second length, intersecting the axial direction of the eye cap, and the drive mechanism 60 may rotate the eye cap around the axial direction to change the positions of the first and second portions.

[0104] According to this, the driving mechanism 60 can change the position of the eye cup from the first position to the second position by rotating the eye cup around the cylinder axis. When the temple portions are bent, the rear temple portions (the first rear temple portion 16 and the second rear temple portion 26) extend intersecting the cylinder axis direction (along the alignment direction). At this time, the spatial position to which the rear temple portions extend is farther from the lens barrel than the first length and closer than the second length. In the first position, the temple portions and the second portion are aligned along the alignment direction. Therefore, if the temple portions are bent while still in the first position, the second portion will be present in the spatial position to which the rear temple portions extend, and they will interfere with each other and hinder bending. Therefore, when the eye cup is rotated by the driving mechanism 60 and the second portion moves away from the spatial position to which the rear temple portions extend, the temple portions can be bent appropriately. The eye cup may be rotated any number of degrees as long as at least the second portion is separated from the spatial position to which the rear temple portion extends after being folded.

[0105] After the eye cap is rotated by the drive mechanism 60, the portion of the eye cap that is aligned with the temple portions in the alignment direction is a portion that connects the first portion and the second portion, and at least the length that extends from the lens barrel is shorter than that of the second portion. The length that this portion extends from the lens barrel may be longer or shorter than that of the first portion. For example, the length that this portion extends from the lens barrel may be a length that does not interfere with the spatial position to which the rear temple portions extend after bending, or it may simply be shorter than the second length.

[0106] Also, for example, the detector may be a sensor that detects when bending of the temple portion has begun, indicating that the HMD 100 has been removed from the user 99, and may output a signal to drive the drive mechanism 60 based on the detection result.

[0107] According to this, the eye cups are changed from the first position to the second position when the temples start to bend.

[0108] Also, for example, the detector may be a sensor that detects that the user 99 is not within a predetermined distance of the HMD 100, which means that the HMD 100 has been removed from the user 99, and may output a signal to drive the drive mechanism 60 based on the detection result.

[0109] According to this, when the user 99 is not within a predetermined distance from the HMD 100, the eyecups are changed from the first posture to the second posture.

[0110] Also, for example, the detector may be a sensor that detects that the change in the spatial position of the HMD 100 is less than a predetermined amount, indicating that the HMD 100 has been removed from the user 99, and may output a signal to drive the drive mechanism 60 based on the detection result.

[0111] According to this, when the amount of change in the spatial position of the HMD 100 is equal to or less than a predetermined amount, the eyecups are changed from the first posture to the second posture.

[0112] Also, for example, the detector may be a sensor that detects that the detection of the gaze direction of the user 99 looking at the display unit has failed, which means that the HMD 100 has been detached from the user 99, and may output a signal to drive the drive mechanism 60 based on the detection result.

[0113] According to this, when the detection of the line of sight direction of the user 99 looking at the display unit fails, the eyecup is changed from the first position to the second position.

[0114] Also, for example, the detector may be a detection mechanism built into the temple portion that detects when bending of the temple portion has begun, indicating that the display device has been detached from the user, and may transmit the external force applied to the display device to bend the temple portion, thereby driving the drive mechanism.

[0115] According to this, the eye cups are changed from the first position to the second position when the temples start to bend. In particular, since the detector (detection mechanism) serves as the power source for driving the drive mechanism 60, there is no need to provide a separate power source for an actuator or the like and a power source for operating that power source, which has the advantage that the HMD 100 can be configured at low cost and light weight.

[0116] (Other embodiments) Although the embodiments and the like have been described above, the present disclosure is not limited to the above-described embodiments and the like.

[0117] Furthermore, although the components constituting the HMD have been exemplified in the above embodiments, the functions of the components of the HMD may be distributed in any manner among the multiple parts constituting the HMD.

[0118] In addition, this disclosure also includes forms obtained by applying various modifications to the embodiments, etc. that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of the embodiments, etc. within the scope that does not deviate from the intent of this disclosure. [Industrial Applicability]

[0119] The present disclosure is useful as a wearable display device such as a head-mounted display. [Explanation of symbols]

[0120] 10 First telescope 11 First Main Section 12 First Subdivision 13 First Panel 14 First Eye Cap 14a First insertion part 14b First cap part 14c First constriction 14d First thick part 14e First plate section 15 First Temple 16 First rear temple part 17 First hinge part 18 First front temple 19, 29 Cover 20 Second telescope 21 Second Main Section 22 Second Subdivision 23 Second Panel 24 Second Eye Cap 25 Second Temple 26 Second rear temple part 27 Second hinge part 28 Second front temple 30 Display section 31 Adjustment mechanism 32 Adjustment member 32a Knob member 33, 34 Threaded part 35, 36 screw holes 38 Drive Circuit 38a Processing section 39 Display Panel 40 Convex Lens 41 Support member 41a Internal wiring 53 First Sound Recorder 54 Second Sound Recorder 55 The fifth sound pickup 60 Drive mechanism 61 Rod 62 First Gear 63 Second Gear 64 Third Gear 65 Cap support ring 66 Motor 67 Power switch 71 Proximity Sensor 73 Wiring 75 connectors 75a plug 81 Eye Tracker 91 Power supply 92 Signal Processing Circuit 95 eyes 96 Ears 99 users 100 HMD

Claims

1. A display device that is worn by a user and used, two cylindrical lens barrels each having two display units at the bottom for displaying a first image and a second image, respectively; an eye cap having a cylindrical shape provided along an open end of the lens barrel; a bendable temple portion that is worn by the user in an extended state and supports the lens barrel; A detector that detects a state of attachment or detachment of the display device to the user; a drive mechanism that changes a posture of the eye cap from a first posture to a second posture when the detector detects that the display device is detached from the user, the first position is a position in which the user wears the display device, and in which interference occurs between the eye cap and the temple portion when the eye cap is bent; The second position is a position in which no interference occurs between the eye cup and the temple portion when the eye cup is bent. Display device.

2. the eye cap is connected in a cylindrical shape having a common cylindrical axis direction with the lens barrel, the first portion extending from the lens barrel by a first length along the cylindrical axis direction of the lens barrel, and the second portion extending from the lens barrel by a second length longer than the first length along the cylindrical axis direction of the lens barrel, the temple portion when folded extends at a position farther from the lens barrel than the first length and closer to the lens barrel than the second length, intersecting with a cylinder axis direction of the eye cup, The driving mechanism rotates the eye cap around a cylindrical axis to change the positions of the first portion and the second portion. The display device according to claim 1 .

3. The detector includes: a sensor that detects when bending of the temple portion has started as a state in which the display device has been detached from the user; Based on the detection result, a signal for driving the driving mechanism is output. The display device according to claim 1 .

4. The detector includes: a sensor that detects that the user is not within a predetermined distance from the display device, as a state in which the display device is detached from the user; Based on the detection result, a signal for driving the driving mechanism is output. The display device according to claim 1 .

5. The detector includes: a sensor that detects that a change in a spatial position of the display device is equal to or smaller than a predetermined amount, as a state in which the display device is detached from the user; Based on the detection result, a signal for driving the driving mechanism is output. The display device according to claim 1 .

6. The detector includes: a sensor that detects a failure in detecting a line of sight of the user looking at the display unit as a state in which the display unit is detached from the user; Based on the detection result, a signal for driving the driving mechanism is output. The display device according to claim 1 .

7. The detector includes: a detection mechanism built into the temple portion that detects when bending of the temple portion has started as a state in which the display device has been detached from the user; An external force applied to the display device for bending the temple portion is transmitted to drive the driving mechanism. The display device according to claim 1 .

Images