AR glasses

Abstract

We provide AR glasses that can suppress the reduction in visibility in real space. [Solution] Generally, according to the embodiment, the AR glasses include a frame, a lens having a rear end surface and a display area on which an image is displayed, temples connected to the frame, temple tips connected to the temples, nose pads that contact the user's nose, and concave ear rests having an ear rest surface, a first corner, and a second corner, provided across the temples and the temple tips, wherein the length between the rear end surface and the center of the nose pad is 6 to 12 mm, the length between the rear end surface and the first corner is 100 to 110 mm, the length between the rear end surface and the second corner is 122 to 132 mm, the fourth length between the center line of the display area and the center of the nose pad is 12 to 18 mm, and the fifth length between the center line and the ear rest surface is 5 to 8 mm.

Description

Technical Field

[0001] Embodiments of the present invention relate to AR glasses.

Background Art

[0002] In recent years, AR (Augmented Reality) glasses, which are glasses-type devices using AR technology, have been put into practical use. In such AR glasses, it is necessary to sufficiently ensure the visibility of both the real space and the AR display.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the embodiments of the present invention is to provide AR glasses capable of suppressing a decrease in the visibility of the real space.

Means for Solving the Problems

[0005] Generally, according to the embodiment, the AR glasses have a frame, a flat rear end surface, and a display area on the rear end surface where an image is displayed, a pair of lenses held in the frame side by side in a first direction, a light source built into the frame that emits image light to the pair of lenses to display an image in the display area, a pair of temples connected to the frame and extending in one direction, a pair of end pieces connected to the pair of temples, a nose pad attached to the frame and having a pad that contacts the user's nose, an ear rest surface where the user's ears contact, a first inclined surface extending from the ear rest surface toward the nose pad, a second inclined surface extending from the ear rest surface toward the tip of the end piece, a first corner where the ear rest surface and the first inclined surface intersect, and a second corner where the ear rest surface and the second inclined surface intersect. The earpiece comprises a concave ear rest portion extending across the temple and the tip of the earpiece, with the direction perpendicular to the rear end surface being defined as the second direction, the direction intersecting the first and second directions as the third direction, and the line passing through the center of the display area and parallel to the second direction being defined as the display centerline. The first length along the second direction between the rear end surface and the center of the pad is 6 to 12 mm, the second length along the second direction between the rear end surface and the first corner portion is 100 to 110 mm, the third length along the second direction between the rear end surface and the second corner portion is 122 to 132 mm, the fourth length along the third direction between the display centerline and the center of the pad is 12 to 18 mm, and the fifth length along the third direction between the display centerline and the ear rest surface is 5 to 8 mm. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide AR glasses that can suppress the decrease in visibility in real space. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic perspective view of the AR glasses according to this embodiment. [Figure 2] Figure 2 is a schematic top view of the AR glasses according to this embodiment. [Figure 3] Figure 3 is a schematic side view of the AR glasses according to this embodiment. [Figure 4] Figure 4 is a schematic rear view of the AR glasses according to this embodiment. [Figure 5] Figure 5 is a schematic perspective view of the nose pad. [Figure 6] Figure 6 is a side view illustrating the lengths of the components of the AR glasses. [Figure 7] Figure 7 is a schematic cross-sectional view of AR glasses along the line VII-VII in Figure 2. [Figure 8] Figure 8 is a magnified side view of a portion of the temple hinge. [Figure 9] Figure 9 is a magnified side view of a portion of the armor frame. [Figure 10] Figure 10 is a side view showing the armor and temples joined together. [Figure 11] Figure 11 is a side view showing the armor and temples joined together. [Figure 12] Figure 12 is a side view showing the armor and temples joined together. [Figure 13] Figure 13 is a magnified perspective view of the tip cell and cushion. [Figure 14] Figure 14 is an enlarged top view of the front cell and cushion. [Figure 15] Figure 15 is a magnified top view of the area around the chip. [Figure 16] Figure 16 is a block diagram of AR glasses. [Figure 17] Figure 17 shows the AR glasses according to this embodiment being worn by a user. [Figure 18] Figure 18 shows the AR glasses according to this embodiment being worn by a user. [Figure 19] Figure 19 shows the AR glasses according to this embodiment being worn by a user. [Figure 20] Figure 20 shows the state when using the AR glasses according to this embodiment. [Figure 21] FIG. 21 is a view showing a state in which a user wears the AR glasses according to the comparative example. [Figure 22] FIG. 22 is a view showing a state when the AR glasses according to the comparative example are used. MODE FOR CARRYING OUT THE INVENTION

[0008] Hereinafter, the AR glasses according to each embodiment will be described with reference to the drawings. In the drawings, for ease of understanding as necessary, X-axis, Y-axis, and Z-axis orthogonal to each other are described. The direction along the X-axis is referred to as the X direction (first direction), the direction along the Y-axis is referred to as the Y direction (second direction), and the direction along the Z-axis is referred to as the Z direction (third direction). Further, looking at various elements parallel to the Z direction is referred to as a plan view, and looking at various elements in the Y-Z plane defined by the Y direction and the Z direction is referred to as a cross-sectional view.

[0009] FIG. 1 is a schematic perspective view of the AR glasses 1 according to the present embodiment. FIG. 2 is a schematic top view of the AR glasses 1 according to the present embodiment. FIG. 3 is a schematic side view of the AR glasses 1 according to the present embodiment. FIG. 4 is a schematic rear view of the AR glasses 1 according to the present embodiment.

[0010] As shown in FIGS. 1 to 4, the AR glasses 1 include a frame 10, lenses 20R and 20L, yokes 30R and 30L, temples 40R and 40L, front cells 50R and 50L, cushions 60R and 60L, a nose pad 70, and ear pads 80R and 80L.

[0011] The frame 10 has rims 11R and 11L and a bridge 12. The rims 11R and 11L are arranged along the X direction. The rims 11R and 11L have an annular shape and hold the lenses 20R and 20L respectively. In one example, the lenses 20R and 20L are fixed to the respective rims 11R and 11L by fitting grooves provided in the rims 11R and 11L with the lenses 20R and 20L.

[0012] The bridge 12 connects the rims 11R and 11L. In one example, the rims 11R and 11L and the bridge 12 are integrally formed. The nose pads 70 are attached to the bridge 12. Details of the nose pads 70 will be described later.

[0013] The frame 10 includes an inner surface S1 and an outer surface S2 opposite to the inner surface S1. The inner surface S1 corresponds to the surface facing the user when the user wears the AR glasses 1. The outer surface S2 corresponds to the surface located on the opposite side from the user when the user wears the AR glasses 1.

[0014] The illuminance sensor IS and cameras CM1, CM2R, and CM2L are mounted on the outer surface S2 of the frame 10. The illuminance sensor IS and camera CM1 are mounted on the bridge 12. Cameras CM2R and CM2L are mounted on both sides of the frame 10. Specifically, camera CM2R is mounted on the rim 11R, and camera CM2L is mounted on the rim 11L.

[0015] Camera CM1 corresponds to a color camera that captures color images, for example. Camera CM1 is used for purposes such as photography and image recognition. Cameras CM2R and CM2L correspond to monochrome cameras that capture black and white images, for example. Cameras CM2R and CM2L recognize the user's hand movements, for example. Functions pre-set on the AR glasses 1 are activated in response to these hand movements. Note that cameras other than cameras CM1, CM2R, and CM2L may be attached to the main unit 2. Cameras CM1, CM2R, and CM2L include image sensors, cover lenses, etc.

[0016] As shown in Figures 3 and 4, lenses 20R and 20L each have a rear end surface LS located on the inner surface S1 side. The rear end surface LS corresponds to the surface that faces the user when the AR glasses 1 are worn by the user. The rear end surface LS is flat and formed parallel to the XZ plane.

[0017] As shown in Figure 4, the rear end surface LS of the lens has a display area DA. An image is displayed in the display area DA by image light emitted from light sources LSR and LSL, which are built into the rims 11R and 11L, respectively. As shown in Figure 4, the display center line DCL is defined as a line that passes through the center of the display area DA in the Z direction and is perpendicular to the rear end surface LS of the lens. The display center line DCL is a line parallel to the Y direction. In the example in Figure 4, the display area DA is formed in a rectangular shape, but it is not limited to this and may be circular in shape as well.

[0018] The armor pieces 30R and 30L are connected to the ends of the frame 10. Armor piece 30R has a frame 31R and a cover 32R. Armor piece 30L has a frame 31L and a cover 32L. Frames 31R and 31L extend in the Y direction and are connected to rims 11R and 11L, respectively. Covers 32R and 32L are attached to frames 31R and 31L, respectively. In one example, frames 31R, 31L and frame 10 are integrally formed.

[0019] Temple 40R has a frame 41R and a hinge 42R. Temple 40L has a frame 41L and a hinge 42L. Frames 41R and 41L extend in the Y direction, respectively. Hinge 42R connects frame 41R to frame 31R of endpiece 30R. Hinge 42L connects frame 41L to frame 31L of endpiece 30L. Hinges 42R and 42L support frames 41R and 41L so that they can rotate around an axis along the Z direction. By rotating frames 41R and 41L, respectively, temples 40R and 40L can be folded.

[0020] The temple tip 50R is connected to the frame 41R of the temple 40R. The temple tip 50L is connected to the frame 41L of the temple 40L. The temple tips 50R and 50L are curved to conform to the shape of the user's head. The frame 41R and the temple tip 50R, and the frame 41L and the temple tip 50L may be integrally formed.

[0021] As shown in Figures 1 and 2, the front cell 50R includes an inner surface 50Rs. The front cell 50L also includes an inner surface 50Ls. The inner surfaces 50Rs and 50Ls are the surfaces that face the user's head when the user wears the AR glasses 1.

[0022] Cushions 60R and 60L are attached to the inner surfaces 50Rs and 50Ls, respectively. Cushions 60R and 60L come into contact with the user's head when the user wears the AR glasses 1. Cushions 60R and 60L are made of a material with excellent cushioning properties. In one example, cushions 60R and 60L are made of polyurethane.

[0023] A connector CN1 is located at the end of the lead cell 50L. For example, a USB (Universal Serial Bus) cable can be inserted into the connector CN1 to connect to an electronic device such as a smartphone. The connector CN1 may also be located on the lead cell 50L.

[0024] The ear rests 80R and 80L correspond to the parts that come into contact with the ears of the user wearing the AR glasses 1. The ear rest 80R is formed in a concave shape extending from the temple 40R to the temple tip 50R. The ear rest 80L is formed in a concave shape extending from the temple 40L to the temple tip 50L.

[0025] In the examples shown in Figures 2 and 3, the chip CP is integrated into the temple 40L. The chip CP includes, for example, processing units such as a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit), memory such as ROM (Read Only Memory) and RAM (Random Access Memory), and a video signal conversion IC. The chip CP may also be integrated into the temple 40R.

[0026] In the example shown in Figure 4, the frame 10 incorporates several internal components PA, including, for example, an FPC (Flexible Printed Circuit) that supplies voltage and signals for driving the AR glasses 1.

[0027] In addition to the elements described above, AR glasses 1 may also be equipped with elements such as a battery, sensors, microphone, and speaker, as needed. These elements may be built into AR glasses 1 or attached externally to AR glasses 1.

[0028] Figure 5 is a schematic perspective view of the nose pad 70. The nose pad 70 comprises a sheet metal member 71 and pads 77R and 77L.

[0029] The sheet metal member 71 has arm portions 72R, 72L, locking portions 73R, 73L, connecting portion 74, leaf spring portion 75, and locking portion 76. In the example shown in Figure 5, the arm portions 72R, 72L, connecting portion 74, leaf spring portion 75, and locking portion 76 are integrally formed. However, each element may be composed of separate parts.

[0030] The arm portion 72R extends from the connecting portion 74 toward the locking portion 73R, connecting the connecting portion 74 and the locking portion 73R. The locking portion 73R is located at the end of the arm portion 72R and is formed in a C shape.

[0031] The arm portion 72L extends from the connecting portion 74 toward the locking portion 73L, connecting the connecting portion 74 and the locking portion 73L. The locking portion 73L is located at the end of the arm portion 72L and is formed in a C shape.

[0032] The connecting portion 74 connects the arm portions 72R and 72L. The leaf spring portion 75 and the locking portion 76 are connected to the connecting portion 74. The leaf spring portion 75 extends in the Z direction and its tip is bent in a U shape. The nose pad 70 is fixed to the bridge 12 by inserting the leaf spring portion 75 into a groove (groove portion 17 shown in Figure 7) provided in the bridge 12. The locking portion 76 extends in the Y direction and its tip is bent in a U shape.

[0033] Pad 77R has a nose rest portion 78R and a projection 79R protruding from the nose rest portion 78R. Pad 77L has a nose rest portion 78L and a projection 79L protruding from the nose rest portion 78L. The nose rest portions 78R and 78L are parts that come into contact with the user's nose when the user wears the AR glasses 1. The projections 79R and 79L are locked by the locking portions 73R and 73L, respectively. This fixes the pads 77R and 77L to the sheet metal member 71.

[0034] Figure 6 is a side view illustrating the lengths of the components of the AR glasses 1. In Figure 6, the frame 10 and lens 20L are shown in cross-section.

[0035] Lens 20L has a front lens surface FS located on the outer surface S2 side. The front lens surface FS is located on the opposite side of lens 20L from the rear lens surface LS. In one example, the front lens surface FS is flat and parallel to the XZ plane. Note that the front lens surface FS is not limited to a flat surface but may also be a curved surface.

[0036] The ear rest portion 80L has an ear rest surface 81L, inclined surfaces 82L and 83L, and corners C1 and C2. The ear rest surface 81L is positioned over the temple 40L and the end piece 50L, and comes into contact with the user's ear. The ear rest surface 81L is parallel to, for example, the XY plane. That is, the ear rest surface 81L is perpendicular to the plane parallel to the rear end surface LS of the lens.

[0037] The inclined surface 82L (first inclined surface) extends from the ear rest surface 81L toward the nose pad 70. The inclined surface 82L is inclined relative to the ear rest surface 81L toward the nose pad 70 at an angle θ82. The angle θ82 is obtuse.

[0038] The inclined surface 83L (second inclined surface) extends from the ear rest surface 81L towards the tip E50 of the end cell 50L. The inclined surface 83L is inclined at an angle θ83 relative to the ear rest surface 81L towards the tip E50. The angle θ83 is obtuse.

[0039] Corner C1 (first corner) is the point where the ear rest surface 81L and the inclined surface 82L intersect. Corner C2 (second corner) is the point where the ear rest surface 81L and the inclined surface 83L intersect.

[0040] Pad 77L has a nose pad center 70C. The nose pad center 70C corresponds to the center of the nose rest portion 78L.

[0041] Here, the distance along the Y-direction between the rear end surface LS of the lens and the center of the nose pad 70C is defined as length LL1 (first length). The distance along the Y-direction between the rear end surface LS of the lens and the corner C1 is defined as length LL2 (second length). The distance along the Y-direction between the rear end surface LS of the lens and the corner C2 is defined as length LL3 (third length). The distance along the Z-direction between the display center line DCL and the center of the nose pad 70C is defined as length LL4 (fourth length). The distance along the Z-direction between the display center line DCL and the ear rest surface 81L is defined as length LL5 (fifth length).

[0042] In this embodiment, the lengths are as follows: LL1 is 6 to 12 mm, LL2 is 100 to 110 mm, LL3 is 122 to 132 mm, LL4 is 12 to 18 mm, and LL5 is 5 to 8 mm. It is desirable that lengths LL1 to LL5 be approximately -1 mm to +1 mm relative to their respective median values.

[0043] The length range described above is set to be most effective when the user's eyeball is located at the assumed point EY shown in Figure 6. This effect will be explained later.

[0044] The assumed point EY is located on the display center line DCL. The distance between the rear end surface LS of the lens and the assumed point EY along the Y direction is defined as length LL6. Length LL6 is between 6 and 12 mm.

[0045] In the example shown in Figure 6, the display centerline DCL coincides with the lower end of the armor plate 30L. However, the display centerline DCL and the armor plate 30L do not necessarily have to coincide.

[0046] Figure 7 is a schematic cross-sectional view of the AR glasses 1 along the line VII-VII in Figure 2. Figure 7 shows a cross-section around the connection point between the nose pad 70 and the bridge 12. Note that in Figure 7, the pad 77R of the nose pad 70 is shown with a dashed line.

[0047] The bridge 12 has a groove 17 extending in the Z direction. The groove 17 is located at the bottom of the bridge 12. The leaf spring portion 75 of the nose pad 70 is inserted into the groove 17, thereby fixing the nose pad 70 to the bridge 12.

[0048] The arm portion 72R includes a first arm portion 72Ra and a second arm portion 72Rb. In the example shown in Figure 7, the first arm portion 72Ra extends in a direction D1 that intersects the Y and Z directions in cross-sectional view. Direction D1 is inclined clockwise with respect to the Y direction at an angle θ1. A locking portion 73R is connected to one end of the first arm portion 72Ra, and the second arm portion 72Rb is connected to the other end. In the example shown in Figure 7, the connection portion P1 to which the first arm portion 72Ra and the second arm portion 72Rb are connected is parallel to the Y direction.

[0049] In the example shown in Figure 7, the second arm 72Rb extends in the Z direction in a cross-sectional view. The second arm 72Rb connects the first arm 72Ra and the connecting portion 74. In the example shown in Figure 7, the connecting portion P2 to which the second arm 72Rb and the connecting portion 74 are connected is parallel to the Y direction.

[0050] Here, we define length L1 as the length of arm portion 72R in direction D1, and length L2 as the length in the Z direction between connection portion P1 and connection portion P2. In this case, length L1 is 14 mm or less, length L2 is 10 mm or less, and angle θ1 is 20° or more.

[0051] Although not shown in the illustration, the configurations of the arm portion 72L and the locking portion 73L are the same as those of the arm portion 72R and the locking portion 73R described above using Figure 7.

[0052] Figure 8 is an enlarged side view of a portion of the hinge 42L of the temple 40L. In Figure 8, the portion of the hinge 42L (support part) that connects to the frame 31L of the endpiece 30L is shown.

[0053] The hinge 42L has a wing portion 43L. In the example shown in Figure 8, the tip portion of the wing portion 43L has a width in the Z direction that decreases as it approaches the end of the wing portion 43L in the Y direction.

[0054] The blade portion 43L has a through hole 44L and a projection 46L (first engaging portion). The through hole 44L penetrates the blade portion 43L in the X direction. As shown in the cross-sectional view around the lower projection 46L in Figure 8, the projection 46L extends in the Y direction and is formed in a convex shape in the X direction. In the example shown in Figure 8, the projection 46L is located on an axis AX1 that passes through the center of the through hole 44L and is parallel to the Y direction, and extends along the axis AX1.

[0055] Figure 9 is an enlarged side view of a portion of the frame 31L of the temple 30L. In Figure 9, the portion of the frame 31L that connects to the hinge 42L of the temple 40L shown in Figure 8 is shown.

[0056] The frame 31L has a recess 33L, a projection 34L, a screw hole 35L, and grooves 36La, 36Lb, and 36Lc (second engagement portion). The recess 33L is provided at the end of the frame 31L to which the temple 40L is connected, and is formed in a concave shape in the X direction. The recess 33L is covered by the cover 32L shown in Figure 1. The projection 34L is formed in a convex shape in the X direction. The projection 34L has a shape in which a part of the side surface of a cylinder is cut out. The screw hole 35L is provided at the top of the projection 34L. The projection 34L and the screw hole 35L are arranged concentrically.

[0057] As shown in the cross-sectional view of the area around groove 36La in the lower part of Figure 9, groove 36La is provided in a concave shape in the X direction. Grooves 36Lb and 36Lc are also provided in a concave shape in the X direction, similar to groove 36La.

[0058] The grooves 36La, 36Lb, and 36Lc extend in different directions. Specifically, groove 36La is located on axis AX2a, which passes through the centers of the projection 34L and the screw hole 35L and is parallel to the Y direction, and extends along axis AX2a. Groove 36Lb is located on axis AX2b, which passes through the centers of the projection 34L and the screw hole 35L and is inclined counterclockwise at an angle θb with respect to axis AX2a, and extends along axis AX2b. Groove 36Lc is located on axis AX2c, which passes through the centers of the projection 34L and the screw hole 35L and is inclined clockwise at an angle θc with respect to axis AX2a, and extends along axis AX2c.

[0059] In the example shown in Figure 9, angle θb is equal to angle θc (θb=θc). In one example, angles θb and θc are within 10°, preferably 5-7°. However, angles θb and θc may be greater than 10°. Also, angles θb and θc may be different from each other. Furthermore, in the example shown in Figure 9, three grooves 36La, 36Lb, and 36Lc are formed in the frame 31L, but four or more grooves may be formed in the frame 31L.

[0060] Figures 10 to 12 are side views showing the state in which the hinge 30L and the temple 40L are joined together. Figure 10 is a side view showing the state in which the projection 46L is fitted into the groove 36La. Figure 11(a) is a side view showing the state in which the projection 46L is fitted into the groove 36Lb. Figure 11(b) is a side view of the AR glasses 1 in the state in which the projection 46L is fitted into the groove 36Lb. Figure 12(a) is a side view showing the state in which the projection 46L is fitted into the groove 36Lc. Figure 12(b) is a side view of the AR glasses 1 in the state in which the projection 46L is fitted into the groove 36Lc.

[0061] As shown in Figures 10, 11(a), and 12(a), the protrusion 34L is inserted into the through hole 44L. In this state, the frame 31L and the hinge 42L are connected by inserting a screw (not shown) into the screw hole 35L. As a result, the frame 31L and the hinge 42L can each rotate around the protrusion 34L.

[0062] As shown in Figures 10 to 12, the angle of the temple 40L can be adjusted by fitting the projection 46L into one of the grooves 36La, 36Lb, or 36Lc.

[0063] Specifically, as shown in Figure 10, when the projection 46L is fitted into the groove 36La, the angles θb and θc are 0°. As shown in Figure 11, when the projection 46L is fitted into the groove 36Lb, the temple 40L is tilted upward by an angle θb. As shown in Figure 12, when the projection 46L is fitted into the groove 36Lc, the temple 40L is tilted downward by an angle θc.

[0064] Although not shown in the diagrams, the configurations of the endpiece 30R and temple 40R are the same as those of the endpiece 30L and temple 40L described above using Figures 8 to 12.

[0065] Figure 13 is an enlarged perspective view of the endpiece 50R and cushion 60R. The endpiece 50R has a first portion 51R and a second portion 52R. The first portion 51R is located on the side of the endpiece 50R that faces the user's head when the user wears the AR glasses 1. The first portion 51R includes an inner surface 50Rs. The second portion 52R is located outside the first portion 51R. The cushion 60R is attached to the first portion 51R.

[0066] The first part 51R is formed of, for example, a resin material. In one example, the first part 51R is formed of polycarbonate. The second part 52R is formed of, for example, an elastic material. In one example, the second part 52R is formed of an elastomer. The first part 51R is formed of, for example, a material that is more rigid than the second part 52R.

[0067] Figure 14 is an enlarged top view of the temple tip 50R and cushion 60R. Note that in Figure 14, the temple tip 50R and cushion 60R are shown separated. The temple tip 50R includes an end E50a connected to the temple 40R and an end E50b on the opposite side of end E50a.

[0068] The first portion 51R has a tapered groove 53R. The groove 53R is located on the inner surface 50Rs side. The groove 53R becomes deeper from end E50b towards end E50a.

[0069] The cushion 60R is attached to the groove 53R. In one example, the cushion 60R is adhered to the groove 53R with double-sided tape. The width of the cushion 60R increases from end E50b to end E50a. That is, the width W60a of the cushion 60R on the end E50a side is greater than the width W60b of the cushion 60R on the end E50b side (W60a > W60b).

[0070] Although not shown in the diagrams, the configurations of the tip cell 50L and cushion 60L are the same as those of the tip cell 50R and cushion 60R described above using Figures 13 and 14.

[0071] Figure 15 is a magnified top view of the area around the tip CP. The frame 41L of the temple 40L includes an inner surface 41Li and an outer surface 41Lo opposite the inner surface 41Li. The inner surface 41Li is the surface that faces the user's head when the user wears the AR glasses 1. The tip CP includes an inner surface CPi on the inner surface 41Li side and an outer surface CPo on the outer surface 41Lo side.

[0072] The chip CP is located on the outer surface 41Lo side of the frame 41L. Specifically, the distance Lo between the outer surface 41Lo and the outer surface CPo is smaller than the distance Li between the inner surface 41Li and the inner surface CPi (Lo <Li)。

[0073] Figure 16 is a block diagram showing an example of the configuration of AR glasses 1. In addition to the connection part CN1, cameras CM1, CM2R, CM2L, illuminance sensor IS, and light sources LSR, LSL mentioned above, AR glasses 1 also include a power supply PS and a controller CNT connected to them. In the example in Figure 16, display elements are used as the light sources LSR and LSL. These display elements are, for example, micro organic light-emitting diodes.

[0074] The power supply PS is connected to the controller CNT. The power supply PS supplies power to the controller.

[0075] In the example shown in Figure 16, the AR glasses 1 are connected to an electronic device DVC such as a smartphone, personal computer, or remote control. The device DVC includes a connection part CN2 and a detection circuit DC. The AR glasses 1 and the device DVC are connected by connecting the connection part CN1 on the AR glasses 1 and the connection part CN2 on the device DVC. The connection parts CN1 and CN2 are connected, for example, by a USB cable. The device DVC and the AR glasses 1 may also be connected by wireless communication.

[0076] The controller CNT comprises image processing units GP1 and GP2, an arithmetic processing unit ART, and a signal conversion unit SC. The controller CNT is integrated into, for example, the chip CP. The controller CNT corresponds to, for example, an MPU (Micro Processing Unit).

[0077] The image processing unit GP1 is connected to the signal conversion unit SC and the camera CM1. In one example, the image processing unit GP1 processes the image captured by the camera CM1. The image processing unit GP1 also controls the drive of the camera CM1. The image processing unit GP2 is connected to the arithmetic processing unit ART, the signal conversion unit SC, the power supply PS, the connection unit CN1, and the cameras CM2R and CM2L. In one example, the image processing unit GP2 processes the image captured by the cameras CM2R and CM2L. The image processing unit GP2 also controls the drive of the cameras CM2R and CM2L. The image processing units GP1 and GP2 transmit the processed image signal to the detection circuit DC of the device DVC via the connection units CN1 and CN2. The image processing units GP1 and GP2 include, for example, an ISP (Image Signal Processor). Note that the drive of the cameras CM1, CM2R, and CM2L may be performed by components other than the image processing units GP1 and GP2.

[0078] The signal conversion unit SC is connected to the arithmetic processing unit ART, image processing units GP1 and GP2, power supply PS, connection unit CN1, and light sources LSR and LSL. In one example, the signal conversion unit SC converts the signal sent from the device DVC and sends the signal to the display elements of the light sources LSR and LSL. For example, the signal conversion unit SC converts a DisplayPort signal sent from a device into an LVDS (Low Voltage Differential Signaling) signal.

[0079] The arithmetic processing unit ART is connected to the power supply PS, connection unit CN1, image processing unit GP2, signal conversion unit SC, and illuminance sensor IS. In one example, the arithmetic processing unit ART processes the measured values ​​obtained from the illuminance sensor IS. The arithmetic processing unit ART transmits the results of the processing to the detection circuit DC of the device DVC via connection units CN1 and CN2. The arithmetic processing unit ART includes components such as a CPU, GPU, and memory.

[0080] The detection circuit DC included in the device DVC analyzes, for example, the calculation results sent from the arithmetic processing unit ART and the image signals sent from the image processing units GP1 and GP2. The detection circuit DC may also be included in the controller CNT of the AR glasses 1.

[0081] Figures 17 to 19 show the AR glasses 1 according to this embodiment being worn by a user U. Here, the plane parallel to the XZ plane is defined as the reference plane RP, with gravity being the Z direction. As shown in Figure 17, when the user U wearing the AR glasses 1 according to this embodiment is facing forward, the rear end surface LS of the lens is approximately parallel to the reference plane RP.

[0082] The user U shown in Figure 18 has a higher ear position than the user U shown in Figure 17. When such a user U wears the AR glasses 1 according to this embodiment, the temples 40R and 40L are tilted upward. As a result, similar to Figure 17, the rear end surface LS of the lens becomes approximately parallel to the reference plane RP.

[0083] The user U shown in Figure 19 has ears positioned lower than the user U shown in Figure 17. When such a user U wears the AR glasses 1 according to this embodiment, the temples 40R and 40L are tilted downward. As a result, similar to Figure 17, the rear end surface LS of the lens becomes approximately parallel to the reference plane RP.

[0084] Figure 20 shows the state when using the AR glasses 1 according to this embodiment. Figure 20(a) is a schematic rear view of the AR glasses 1 according to this embodiment when displaying the AR image AP. Figure 20(b) shows an example of an image that user U can see through the AR glasses 1 according to this embodiment. Note that although Figure 20(a) only shows the right side of the AR glasses 1, the AR image AP is displayed on the left side of the AR glasses 1 in the same way as on the right side.

[0085] As shown in Figure 20(a), the AR image AP is projected onto the display area DA of the lens 20R by emitting image light from a light source LSR built into the AR glasses 1 to the lens 20R. Note that the projection method of the AR image AP is not limited to the example above.

[0086] When user U wears the AR glasses 1 in the state shown in Figure 20(a), user U can view the real space RS through the area of ​​the lens 20R other than the display area DA. Therefore, as shown in Figure 20(b), user U can simultaneously view both the AR image AP and the real space RS so that the AR image AP overlaps with the real space RS. In the example in Figure 20(b), user U can simultaneously view both the outdoor real space RS and the AR image AP of the landscape showing flowers, etc.

[0087] Here, as shown in Figure 20(b), the horizontal line VL1 is defined as a line passing through the center of user U's field of view when user U is looking straight ahead, and parallel to the horizontal direction (X direction). The horizontal line VL2 is defined as a line passing through the center of AR image AP and parallel to the horizontal direction. The horizontal line VL2 coincides with the display center line DCL. In this embodiment, the horizontal line VL2 is positioned higher than the horizontal line VL1. Therefore, the AR image AP is positioned above the center of user U's field of view.

[0088] Here, the effects of the AR glasses 1 according to this embodiment will be explained using Figures 21 and 22. Figure 21 is a diagram showing the AR glasses 1 according to a comparative example being worn by user U.

[0089] The rear lens surface LS of AR glasses 1 in the comparative example is tilted at an angle θp toward the user U with respect to the reference plane RP. The angle θp corresponds to the forward tilt angle. The forward tilt angle corresponds to the angle between the reference plane RP and the rear lens surface LS when the user U wearing AR glasses 1 is facing forward.

[0090] Figure 22 shows the state when using AR glasses 1 according to the comparative example. Figure 22(a) is a schematic rear view of AR glasses 1 according to the comparative example when displaying AR image AP. Figure 22(b) shows an example of an image that user U can see through AR glasses 1 according to the comparative example.

[0091] The position where the AR image AP is projected on the lens 20R of the comparative example AR glasses 1 shown in Figure 22(a) is the same as the position where the AR image AP is projected on the lens 20R of the AR glasses 1 according to this embodiment shown in Figure 20(a). In other words, the position of the display area DA on the lens 20R is the same for the AR glasses 1 according to the comparative example and the AR glasses 1 according to this embodiment.

[0092] On the other hand, in the comparative example, the AR glasses 1 have the rear lens surface LS tilted at an angle θp with respect to the reference plane RP. Therefore, compared to Figure 20(b), the visible position of the AR image AP is lower, as shown in Figure 22(b). As a result, the horizontal lines VL1 and VL2 coincide, and the AR image AP is positioned near the center of the user U's field of view.

[0093] In the comparative example AR glasses 1, the AR image AP occupies the area near the center of the user U's field of view. Therefore, when using the comparative example AR glasses 1 outdoors, a problem may arise where it becomes difficult to see the ground. Also, when using a computer or smartphone indoors, a problem may arise where the field of view of the hands is impaired, making it difficult to operate the keyboard or smartphone.

[0094] In the AR glasses 1 according to this embodiment, the nose pads 70, temples 40R, 40L, and end tips 50R, 50L are configured so that the rear end surface LS of the lens is parallel to the reference plane RP. Specifically, by setting the lengths LL1 to LL5 within the above-mentioned range, the rear end surface LS of the lens becomes parallel to the reference plane RP. As a result, in the AR glasses 1 according to this embodiment, the angle θp (forward tilt angle) is approximately 0°. This causes the AR image AP to be positioned slightly above the user U's field of view, as shown in Figure 20(b). Therefore, when using the AR glasses 1 according to this embodiment outdoors, a sufficient field of view of the feet can be ensured. Furthermore, when using a computer or smartphone indoors, a sufficient field of view of the hands can be ensured, thus suppressing a decrease in the operability of the keyboard or smartphone.

[0095] Thus, in the AR glasses 1 according to this embodiment, it is possible to suppress the decrease in visibility of the real-world RS.

[0096] Furthermore, in this embodiment, the temples 40R and 40L are configured to be rotatable. Therefore, as shown in Figures 18 and 19, users U with high or low ear positions can adjust the angle of the temples 40R and 40L to maintain a forward tilt angle of 0°. This improves the usability of the AR glasses 1.

[0097] Furthermore, because the frame 10 of AR glasses 1 is equipped with various components, the center of gravity of AR glasses 1 shifts forward, which may cause AR glasses 1 to shift during use. If AR glasses 1 shifts, it may result in situations where part of the AR image AP becomes invisible.

[0098] In this embodiment, cushions 60R and 60L are attached to the end cells 50R and 50L. This increases the clamping force on the user U's head, suppresses slippage of the AR glasses 1 when in use, and improves the wearability of the AR glasses 1.

[0099] Furthermore, cushions 60R and 60L are made of materials with excellent cushioning properties, such as polyurethane. Therefore, the tightening force can be increased without making the user U feel that they are being tightened too much by the AR Glasses 1. As a result, the wearing comfort of the AR Glasses 1 can be improved.

[0100] Furthermore, the first portion 51R, 51L to which the cushions 60R, 60L are bonded is made of a material with higher rigidity than the second portion 52R, 52L, which is made of an elastic material. Therefore, compared to the case where both the first portion 51R, 51L and the second portion 52R, 52L are made of an elastic material, the bonding strength of the cushions 60R, 60L is improved. In addition, by making the parts of the temple tips 50R, 50L other than the parts to which the cushions 60R, 60L are bonded an elastic material, the elasticity of the temple tips 50R, 50L can also be ensured, preventing a decrease in the wearing comfort of the AR glasses 1.

[0101] Furthermore, as shown in Figure 14, the tip cell 50R has a groove 53R that deepens from end E50b to end E50a. The cushion 60R is thicker from end E50b to end E50a. By increasing the thickness of the cushion 60R in the part that strongly contacts the side of the user U's head, the cushioning effect is increased, and the fit of the AR glasses 1 can be improved. In addition, by increasing the thickness of the cushion 60R, it is possible to reduce variations in the fit of the AR glasses 1 even if the size and shape of the user U's head differs.

[0102] Furthermore, in this embodiment, the lengths L1 and L2 of the arms 72R and 72L of the nose pad 70 and the extension angle θ1 are in the relationship described above. Due to this positional relationship, the lenses 20R and 20L are close to the user U's eyes, and even if the AR glasses 1 are slightly misaligned, it is possible to prevent a part of the AR image AP from becoming invisible. As a result, it is possible to suppress a decrease in the visibility of the AR image AP.

[0103] Furthermore, in this embodiment, as shown in Figure 15, the tip CP is positioned on the outside of the temple 40L. That is, the tip CP is positioned on the temple 40L in a location that is far from the user U and difficult to touch. Therefore, even if the tip CP becomes hot during use, the risk of low-temperature burns and other dangers can be avoided.

[0104] The present invention is not limited to the embodiments described above, and in the implementation stage, the components can be modified and implemented without departing from the spirit of the invention. Furthermore, various inventions can be formed by appropriately combining the multiple components disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiments. Moreover, components from different embodiments may be appropriately combined. [Explanation of Symbols]

[0105] 1...AR glasses, 10...frame, 20R, 20L...lens, 30R, 30L...endpiece, 40R, 40L...temple, 50R, 50L...endpiece, 60R, 60L...cushion, 70...nose pad, 80R, 80L...earpiece, LSR, LSL...light source, LS...rear end surface of lens, DA, display area, DCL...display centerline, AP...AR image, RS...real space.

Claims

1. Frame and, A pair of lenses, each having a flat rear end surface and a display area on the rear end surface where an image is displayed, are held in the frame and arranged in a first direction. A light source is built into the frame and emits image light to the pair of lenses for displaying an image in the display area, A pair of temples connected to the frame and extending in one direction, A pair of end pieces connected to each of the aforementioned pair of temples, A nose pad having a pad that contacts the user's nose, and attached to the frame, An ear rest has an ear rest surface that contacts the user's ear, a first inclined surface extending from the ear rest surface toward the nose pad, a second inclined surface extending from the ear rest surface toward the tip of the temple, a first corner where the ear rest surface and the first inclined surface intersect, and a second corner where the ear rest surface and the second inclined surface intersect, and a concave ear rest portion is provided extending across the temple and the temple. Equipped with, The direction perpendicular to the aforementioned rear end face is defined as the second direction. The third direction is defined as the direction that intersects the first and second directions. When a line passing through the center of the display area and parallel to the second direction is defined as the display centerline, The first length along the second direction between the rear end face and the center of the pad is 6 to 12 mm. The second length along the second direction between the rear end face and the first corner is 100 to 110 mm. The third length along the second direction between the rear end face and the second corner is 122 to 132 mm. The fourth length along the third direction between the center line of the display and the center of the pad is 12 to 18 mm. The fifth length along the third direction between the center line of the display and the ear rest surface is 5 to 8 mm. AR glasses.

2. The frame and the temple are further connected by an endpiece, The temple is rotatably connected to the endpiece. AR glasses according to claim 1.

3. The frame and the temple are further connected by an endpiece, The temple has a support portion rotatably connected to the endpiece and a first engaging portion provided on the support portion. The armor has a plurality of second engaging portions that extend in different directions and are capable of engaging with the first engaging portion. The temple is angle-adjustable so that the first engaging portion engages with either of the second engaging portions. AR glasses according to claim 1.

4. The first engaging portion is formed in a convex shape, The plurality of second engaging portions are formed in a concave shape. AR glasses according to claim 3.

5. The rotation angle of the temple is within 10° with respect to an axis parallel to the second direction. AR glasses according to claim 2.

6. The armor extends in the second direction, AR glasses according to any one of claims 2 to 5.

7. The ear rest surface is perpendicular to a plane parallel to the rear end surface. AR glasses according to claim 1.

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