Head mounted display and light control member

Abstract

A head mounted display includes a housing and an optical member fixed to the housing, the optical member providing an image. The housing has a pair of attachment portions, and both ends of the light control member can be detachably attached to the pair of attachment portions. At least one of the pair of attachment portions is electrically connected to at least one of the two ends of the light control member.

Description

Technical Field

[0001] The present disclosure relates to head mounted displays and light controllers. Background Art

[0002] In recent years, augmented reality (AR) has attracted attention. This technology enables a user to see additional information such as images and text superimposed on a scene in front of his / her eyes. A head mounted display (HMD) is called an AR device for realizing augmented reality.

[0003] Reference List

[0004] Patent Literature

[0005] Patent Document 1: JP 2012-252091 A

[0006] Patent Document 2: JP 2017-103767 A Summary of the invention

[0007] Technical issues

[0008] However, the technology in the related art does not provide a head-mounted display with a high level of operability. Specifically, the head-mounted display may include a light controller that changes transmittance as a voltage is applied. Such a light controller is connected to the main body of the head-mounted display by a wire and is not easily attached to or detached from the head-mounted display. Therefore, it cannot be said that the head-mounted display has a high level of operability.

[0009] Operability that is not at a high level is also a problem in other types of head-mounted displays as well as those used for AR. This problem may occur in a head-mounted display (such as glasses) that includes a light controller that changes transmittance with the application of voltage.

[0010] Therefore, the present disclosure proposes a head-mounted display and a light controller with enhanced operability.

[0011] Solution to the problem

[0012] According to the present disclosure, a head-mounted display includes: a frame; and an optical component fixed to the frame and configured to provide an image, wherein the frame includes a pair of attachment and detachment units, both ends of a light controller are detachably attached to the attachment and detachment units, and at least one of the pair of attachment and detachment units is electrically connected to at least one of the two ends of the light controller.

[0013] According to the present disclosure, a light controller includes: a substrate having flexibility and a flat plate shape; a dimming material disposed on the substrate and having a flat plate shape; a pair of attachment portions disposed at both ends of the substrate and detachably attached to a pair of attachment and detachment units of a frame of a head-mounted display; and an electrical connector disposed on at least one of the pair of attachment portions and electrically connected to at least one of the pair of attachment and detachment units of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view schematically showing a head mounted display according to an embodiment.

[0015] Figure 2 is schematically shown along Figure 1 A view of a cross section taken along the arrow AA.

[0016] Figure 3 is a perspective view schematically showing a head mounted display according to an embodiment.

[0017] Figure 4 is a front view schematically showing a head mounted display according to an embodiment.

[0018] Figure 5 is a perspective view showing a part of a light controller according to an embodiment.

[0019] Figure 6 is a side view showing a part of a light controller according to an embodiment.

[0020] Figure 7 is a front view schematically showing a light controller according to an embodiment.

[0021] Figure 8 is a front view schematically showing a light controller according to an embodiment.

[0022] Fig. 9 is a perspective view showing a part of an extending portion according to an embodiment.

[0023] Fig.10 is a perspective view showing a portion of a light controller and a portion of an extending portion according to an embodiment.

[0024] Fig.11 is a front view showing a portion of a light controller and a portion of an extending portion according to an embodiment.

[0025] Fig.12 is schematically shown along Fig.11 A view of a cross section taken along the arrow BB in FIG.

[0026] Fig.13 is a perspective view showing a portion of a light controller and a portion of an extending portion according to a modification.

[0027] Fig.14 is a front view of the light controller and the extension according to the modification.

[0028] Fig.15 is schematically shown along Fig.14 A view of a cross section taken by arrow CC in FIG.

[0029] Fig.16 is a front view schematically showing a light controller according to an embodiment.

[0030] Fig.17 It is a view for explaining the applied voltage.

[0031] Fig.18 is a view showing an example of a voltage applied to a dimming material.

[0032] Fig.19 is a view showing an example of a wiring pattern according to a modification.

[0033] Fig. 20 is a view showing an example of a voltage applied to a dimming material according to a modification.

[0034] Fig.21 is a view showing an example of a wiring pattern according to a modification.

[0035] Fig. 22 is a view showing an example of a voltage applied to a dimming material according to a modification.

[0036] Fig.23 is a view showing an example of a wiring pattern according to a modification.

[0037] Fig.24 is a view showing an example of a voltage applied to a dimming material according to a modification.

[0038] Fig.25 is a view showing an example of a wiring pattern according to a modification.

[0039] Fig.26 is a view showing an example of a voltage applied to a dimming material according to a modification.

[0040] Fig. 27 is a front view schematically showing a light controller according to a modification.

[0041] Fig.28 is a perspective view schematically showing an optical member and a light controller according to a modification.

[0042] Fig.29is a view schematically showing a cross section of a head-mounted display according to a modification. DETAILED DESCRIPTION

[0043] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In each of the following embodiments, the same reference numerals will be used to represent the same parts, and overlapping contents will not be described. In addition, for ease of understanding, some of the accompanying drawings show a three-dimensional Cartesian coordinate system including a Y-axis. The upward direction of the Y-axis represents a positive direction, while its downward direction represents a negative direction. The Cartesian coordinate system may have some margin for orientation errors between the accompanying drawings, and the present disclosure is not limited to the directions shown.

[0044] The description is given in the following order.

[0045] 1. Appearance of head-mounted display

[0046] 2. Attachment and removal mechanism (1)

[0047] 3. Attachment and removal mechanism (2)

[0048] 4. Wiring pattern

[0049] 5. Modifications

[0050] 6. Effect

[0051] 1. Appearance of head-mounted display

[0052] First, refer to Figure 1 and Figure 2 The configuration of the transmissive head-mounted display 100 according to the present disclosure is described. Figure 1 : is a perspective view schematically showing the head mounted display 100 according to the embodiment. Figure 2 is schematically shown along Figure 1 A view of a cross section taken along the arrow AA.

[0053] The head-mounted display 100 according to this embodiment is an AR device to be mounted on the head of a viewer. The head-mounted display 100 provides light (image light) of various types of information together with external light in front of the eyes of the viewer. The head-mounted display 100 enables the viewer to see a scene in a real space, with a virtual object superimposed and displayed on the scene. Figure 1 As shown, the head mounted display 100 includes a frame 110, an optical member 120, and a light controller 130. Figure 1 For example, the positive direction of the Z axis is the viewer's line of sight.

[0054] The frame 110 is a part to be mounted on the viewer's head. The frame 110 includes a base plate 140, an extension 150a, and a fastener 160. Figure 1 It is in the blind spot, but the extension 150a is located at the opposite position of the extension ( Figure 4 The extension portion 150b shown in FIG. 1 is included in the frame 110. The frame 110 also includes a fixing member 171a which will be described later.

[0055] In the frame 110, the substrate 140 is disposed toward the viewing direction of the viewer. Figure 1 In the embodiment, for example, the substrate 140 is formed as a semicircular flat plate. The extensions 150a and 150b are flat plates extending from the substrate 140 in a predetermined direction. Specifically, the extensions 150a and 150b are arranged at a position away from a surface 140a (see FIG. Figure 2 ) direction. As will be described later, when the light controller 130 is mounted on the extension, the extensions 150a and 150b hold the light controller 130. The fastener 160 is formed in a semicircular shape. One end of the fastener 160 is connected to the extension 150a, and the other end of the fastener 160 is connected to the extension 150b. The fastener 160 is stretchable, and the viewer's head can be fixed by the fastener 160.

[0056] Now refer to Figure 2 For ease of understanding, except for the Figure 1 In addition to the cross section taken by arrow AA, Figure 2 Also shown is a fastener 160. Figure 2 As shown, the substrate 140 includes a display device 141. The display device 141 emits images to present various types of images and information to the viewer. The various types of images and information to be presented may be information displayed based on data transmitted from a content distribution server or the like, or may be information stored in a memory mounted on the head mounted display 100. Alternatively, the various types of images and information to be presented may be data stored in a mobile terminal or a personal computer (PC) of the user acquired by the head mounted display 100. The user of the mobile terminal may be the same as or different from the viewer.

[0057] The substrate 140 may further include a board (not shown). The board performs processing to provide an image to a viewer. For example, the board includes a controller that controls the operation of the head mounted display 100, a memory that stores data, and a communication unit that communicates with an external device. The controller of the board includes, for example, a central processing unit (CPU), a read-only memory (ROM), and a random access memory (RAM).

[0058] Figure 2The display device 141 shown in FIG. 1 may include a right panel light emitting unit and a left panel light emitting unit corresponding to both eyes of the viewer. In this case, the right panel light emitting unit and the left panel light emitting unit emit virtual images for the right eye and the left eye, respectively.

[0059] The above-mentioned base plate 140, extensions 150a and 150b, and fastener 160 are formed in an integral manner. However, the present invention is not limited to this example, and one or all of the base plate 140, extensions 150a and 150b, and fastener 160 may be formed of different components. In this case, for example, these components are fixed to each other using screws, by bonding, or by assembly.

[0060] The optical member 120 reflects image light emitted from the display device 141. Therefore, the optical member 120 provides various types of images and information to the viewer. The optical member 120 is, for example, a half mirror, and includes a material such as glass. That is, among the surfaces of the optical member 120, the surface facing the viewer (the surface providing the image) can reflect light, while the surface opposite to the surface facing the viewer (the surface facing the light controller 130 to be described) can transmit external light. The optical member 120 is fixed to the frame 110, for example, using screws, by bonding, or by assembly. Figure 2 In the embodiment of the present invention, for example, the optical member 120 is fixed to one surface 140a of the substrate 140, and extends while being bent in a direction away from the surface 140a. However, the optical member 120 may be formed as a flat plate instead of being bent.

[0061] The light controller 130 is an electrochromic device and includes a flexible member. For example, the light controller 130 is formed by sandwiching an electrochromic element between transparent electrodes. The electrochromic element undergoes an oxidation reaction or a reduction reaction depending on the voltage applied to the transparent electrodes. Therefore, the transmittance of the light controller 130 is controlled. When the head-mounted display 100 is used in a bright outdoor environment, the display brightness may be insufficient relative to the external light. In this case, the transmittance of the light controller 130 is controlled to ensure the visibility of the head-mounted display 100. The light controller 130 includes, for example, a material obtained by applying an anti-reflective coating to an acrylic transparent resin. Alternatively, the light controller 130 includes polycarbonate, acrylic, or nylon.

[0062] Will refer to Figure 2 The image output of the head mounted display 100 is described. Figure 2 As shown in the direction F11 in FIG. 1 , the external light passes through the light controller 130 according to the transmittance of the light controller 130, then passes through the optical member 120 and reaches the viewer. That is, the viewer can see the scene in the real space or the like when wearing the head mounted display 100. In addition, as Figure 2As shown in the direction F12 in FIG. 1 , the image light emitted from the display device 141 is reflected by the optical member 120 and reaches the viewer. That is, the viewer can see the image provided by the display device 141. In this way, the head mounted display 100 provides the viewer with an augmented reality in which an image is superimposed and displayed on a scene in a real space.

[0063] As described above, the transmittance of the light controller 130 is controlled by applying a voltage. In order to apply a voltage to the light controller 130, it is necessary for the frame 110 including the board to be electrically connected to the light controller 130. On the other hand, depending on the viewer, the light controller 130 may be detached from the head-mounted display 100, or the light controller 130 may be attached to the head-mounted display 100. For example, in order to obtain a transmittance of 100%, it is inferred that the light controller 130 is detached from the head-mounted display 100. Alternatively, for example, when the light controller 130 is damaged, or when a light controller 130 having a different function is adopted according to the intended use, the light controller 130 is replaced with another light controller. However, forcing the viewer to perform an electrical connection between the head-mounted display 100 and the light controller 130 results in a decrease in the usability of the head-mounted display 100.

[0064] Therefore, in the head mounted display 100 according to the embodiment, the light controller 130 can be attached to and detached from the frame 110. The frame 110 on which the light controller 130 is mounted is electrically connected to the light controller 130. Figure 3 and Figure 4 Describe this briefly. Figure 3 : is a perspective view schematically showing the head mounted display 100 according to the embodiment. Figure 3 A state in which the light controller 130 is disassembled is shown. Figure 4 1 is a front view schematically showing the head mounted display 100 according to the embodiment. Figure 4 The view seen in the negative direction of the Z axis is shown.

[0065] like Figure 3 As shown, the light controller 130 includes a pair of attachment portions 131a and 131b. The attachment portion 131a is a region protruding from one end of the light controller 130. An electrode or one end of a wire provided on the light controller 130 is arranged on the attachment portion 131a. Similarly, the attachment portion 131b is a region protruding from the other end of the light controller 130, and an electrode of a wire provided on the light controller 130 is arranged on the attachment portion 131b.

[0066] like Figure 3 and Figure 4As shown, the frame 110 includes fixing members 171a and 171b. The attachment portion 131a is held between the fixing member 171a and the extension portion 150a. Similarly, the attachment portion 131b is held between the fixing member 171b and the extension portion 150b. In addition, the extension portions 150a and 150b are provided with electrical grounding points (conductors to be described) for the wires electrically connected to the board of the substrate 140.

[0067] In the head mounted display 100 according to the embodiment, the attachment portion 131a is fixed to the frame 110 by the fixing member 171a, and the attachment portion 131b is fixed to the frame 110 by the fixing member 171b. When the attachment portion 131a is fixed by the fixing member 171a, the electrode of the wire provided on the attachment portion 131a and the conductor provided on the extension portion 150a are electrically connected to each other. Similarly, when the attachment portion 131b is fixed by the fixing member 171b, the electrode of the wire provided on the attachment portion 131b and the conductor provided on the extension portion 150b are electrically connected to each other. That is, in the head mounted display 100, mounting the light controller 130 on the frame 110 enables electrical connection between the light controller 130 and the frame 110. This makes it possible to attach or detach the light controller 130 without causing the viewer to perform the task of electrical connection, which enhances the operability of the head mounted display 100.

[0068] 2. Attachment and removal mechanism (1)

[0069] Hereinafter, the attachment and detachment mechanism of the light controller 130 according to the embodiment will be described in detail. Figures 5 to 8 The light controller 130 is described. Figure 5 is a perspective view showing a portion of the light controller 130 according to an embodiment. Figure 6 is a side view showing a portion of the light controller 130 according to an embodiment. Figure 6 The view seen in the negative direction of the Y axis is shown. Figure 7 and Figure 8 is a front view schematically showing a light controller 130 according to an embodiment. Figure 7 The view seen in the positive direction of the Z axis is shown. Figure 8 The view seen in the negative direction of the Z axis is shown. Figure 7 and Figure 8 Inverted relative to each other in the vertical direction. Hereinafter, one of the right side and the left side (eg, one of the attachment portions 131a and 131b) may be described, but note that both sides have a similar configuration.

[0070] like Figure 5 and Figure 6As shown, the light controller 130 has a flat plate shape when not attached before being attached to the head mounted display 100. The light controller 130 includes a cover plate 132, a lower plate 133, a dimming material 134, wires 135 and 136, an adhesive member 137, and an upper plate 138.

[0071] The cover plate 132 is flexible and formed as a flat plate. The cover plate 132 includes, for example, a transparent resin.

[0072] The lower plate 133 is stacked on the cover plate 132. Specifically, the lower plate 133 has a shape smaller than that of the cover plate 132, and is stacked on the cover plate 132 in a plan view in such a manner that the entire lower plate 133 overlaps the cover plate 132. The lower plate 133 includes, for example, a transparent resin.

[0073] The dimming material 134 includes, for example, an electrochromic element, and controls light passing through the light controller 130. Specifically, the dimming material 134 is formed by sandwiching an electrochromic element between transparent electrodes. The dimming material 134 is stacked on the cover plate 132 and the lower plate 133. Specifically, the shape of the dimming material 134 is smaller than that of the lower plate 133, and is stacked on the lower plate 133 in a manner that the entire dimming material 134 overlaps the lower plate 133 in a plan view.

[0074] Wires 135 and 136 are wiring patterns provided on the light controller 130, and apply voltage to the dimming material 134. Wires 135 and 136 are, for example, a copper wire and a silver wire. One of the wires 135 and 136 is a positive electrode, and the other is a negative electrode. Here, wire 135 is a positive electrode, and wire 136 is a negative electrode. However, wire 135 may be a negative electrode and wire 136 may be a positive electrode. Wire 135 is connected to one transparent electrode of the dimming material 134, and wire 136 is connected to another transparent electrode of the dimming material 134. Therefore, voltage is applied to the dimming material 134. As shown in FIG. Figure 7 and Figure 8 As shown, electrodes 135a and 135b are provided at both ends of the wire 135. In addition, electrodes 136a and 136b are provided at both ends of the wire 136. The electrodes 135a, 135b, 136a, and 136b are examples of electrical connectors.

[0075] Adhesive member 137 is a transparent elastic adhesive. Adhesive member 137 is, for example, an optical clear adhesive (OCA). Adhesive member 137 is stacked on lower plate 133 to seal dimming material 134 and wires 135 and 136. Adhesive member 137 preferably includes a material with a low bending elastic modulus. For example, adhesive member 137 has a lower bending elastic modulus than cover plate 132, lower plate 133, and upper plate 138. This makes it difficult to apply stress to light controller 130 even when the adhesive member is bent, which enhances the reliability of light controller 130.

[0076] The upper plate 138 is stacked on the adhesive member 137. The size of the upper plate 138 is similar to that of the lower plate 133. In addition, the upper plate 138 includes a transparent resin similar to that of the lower plate 133, for example.

[0077] The cover plate 132, the lower plate 133, the adhesive member 137, and the upper plate 138 are flexible substrates, and correspond to a substrate provided with the dimming material 134 and the wires 135 and 136. For example, the cover plate 132, the lower plate 133, the adhesive member 137, and the upper plate 138 used as the substrate seal the dimming material 134 and the wires 135 and 136.

[0078] like Figure 7 and Figure 8 As shown, the cover plate 132 protrudes from the central portion of both sides of the substantially rectangular shape in a plan view. In addition, similar to the cover plate 132, the lower plate 133, the adhesive member 137 and the upper plate 138 protrude from the central portion of each side of the substantially rectangular shape. The protruding areas correspond to the attachment portions 131a and 131b. Figure 5 As shown, a through hole is formed in a portion protruding toward the attachment portion 131a of each area of ​​the adhesive member 137 and the upper plate 138. Therefore, the attachment portion 131a is formed with an opening 131a1. The electrodes 135a and 136a provided in the attachment portion 131a are exposed from the opening 131a1. The attachment portion 131b has a similar configuration, and the electrodes 135b and 136b are exposed from an opening (not shown).

[0079] like Figure 7 As shown, in the region of the attachment portion 131a, positioning holes 132a1, 132a2 or through holes for positioning are formed at the end of the cover plate 132. Similarly, positioning holes 132b1 and 132b2 are formed in the region of the cover plate 132 corresponding to the end of the attachment portion 131b. The positioning hole 132a1 and the like are used to determine the position of the light controller 130 on the frame 110. This will be described later.

[0080] Next, we will refer to Figures 9 to 12 The attaching and detaching mechanism of the light controller 130 is described. Fig. 9 is a perspective view showing a portion of an extending portion 150 a according to an embodiment. Fig.10 is a perspective view illustrating a portion of the light controller 130 and a portion of the extending portion 150 a according to an embodiment. Fig.11 1 is a front view showing a portion of the light controller 130 and a portion of the extending portion 150 a according to an embodiment. Fig.11 The view seen in the negative direction of the X-axis is shown. Fig.12 is schematically shown along Fig.11 A view of a cross section taken along the arrow BB in FIG.

[0081] like Fig. 9 As shown, the extension 150a is formed with a first cutout 151a1 having a surface partially cut out in a substantially rectangular shape. The first cutout 151a1 is formed with a second cutout 151a2 having a surface partially cut out in a substantially rectangular shape. The first cutout 151a1 is formed with positioning pins 152a1 and 152a2. In addition, the second cutout 151a2 is provided with conductors 153a and 154a. The conductors 153a and 154a are electrical contacts and are connected to the board of the substrate 140 through a wire. In addition, the second cutout 151a2 is provided with a waterproof member 155a surrounding the conductors 153a and 154a. The waterproof member 155a is, for example, rubber and is called a "filler" or the like.

[0082] like Fig. 9 As shown, the fixing member 171a is formed as a flat plate and is pivotally fixed to the extension portion 150a with one end 172a as the center. Fig. 9 , the fixing member 171a pivots in the direction F20. Specifically, the fixing member 171a pivots in the direction in which the fixing member 171a moves to or from the first cutout 151a1 of the extension 150a. The pivot mechanism of one end 172a has a locking mechanism. Unless a certain degree or more of stress is applied in the direction away from the first cutout 151a1, when the fixing member 171a moves to the extension 150a to the extent that the fixing member 171a becomes substantially parallel to the surface of the extension 150a, the locking mechanism locks the fixing member 171a.

[0083] The attachment portion 131a is attached to and separated from a space formed by the fixing member 171a, the first cutout 151a1, and the second cutout 151a2. That is, the fixing member 171a, the first cutout 151a1, and the second cutout 151a2 correspond to the attachment and detachment unit 170a included in the frame 110. Although not shown, the extension portion 150b has a Fig. 9Therefore, the frame 110 further includes an attachment and detachment unit (referred to as "attachment and detachment unit 170b") on the extension portion 150b.

[0084] like Fig.10 and Fig.12 As shown, the attachment portion 131a of the light controller 130 is placed on the first cutout 151a1 and the second cutout 151a2. Specifically, in the attachment portion 131a, the cover plate 132 is placed on the first cutout 151a1, and the lower plate 133, the adhesive member 137 and the upper plate 138 are placed on the second cutout 151a2. In other words, the first cutout 151a1 has a shape that can accommodate the cover plate 132 of the attachment portion 131a. In addition, the second cutout 151a2 has a shape that can accommodate the lower plate 133, the adhesive member 137 and the upper plate 138 of the attachment portion 131a.

[0085] At this time, the positioning pin 152a1 is inserted into the positioning hole 132a1, and the positioning pin 152a2 is inserted into the positioning hole 132a2. Therefore, the position of the light controller 130 is determined relative to the extension 150a. Specifically, when the positioning pin 152a1 is inserted into the positioning hole 132a1, the outer wall of the positioning pin 152a1 abuts against the inner wall of the positioning hole 132a1, which leads to the positioning of the light controller 130. Only using the positioning pin 152a1, the light controller 130 rotates around the positioning pin 152a1. However, in the case where the positioning pin 152a2 is inserted into the positioning hole 132a2, the light controller 130 is prevented from rotating.

[0086] The positioning hole 132a1 has a shape that allows the positioning pin 152a1 to be inserted therein, and has a size that is substantially equal to the size of the positioning pin 152a1. The positioning hole 132a2 has a shape that allows the positioning pin 152a2 to be inserted therein, but has an elongated hole shape. More specifically, the positioning hole 132a2 is formed as an elongated hole, in which one side (Y-axis direction) connecting the positioning pin 152a1 and the positioning hole 132a2 is longer. This is because the positioning hole 132a2 and the positioning pin 152a2 having substantially the same size may be difficult to insert the positioning pins 152a1 and 152a2 into the positioning holes 132a1 and 132a2 due to manufacturing errors, etc. In addition, as described above, since the positioning hole 132a2 is intended to prevent rotation around the positioning pin 152a1, the positioning hole 132a2 does not need to abut against the positioning pin 152a2 in the Y-axis direction that is not the rotation direction. This is why the positioning hole 132a2 has an elongated hole shape with one side facing the Y-axis direction being longer.

[0087] like Fig.11As shown, the fixing member 171a is pivoted in a direction approaching the extension 150a to lock the light controller 130. Therefore, the light controller 130 is held by the attachment and detachment unit 170a of the extension 150a. Fig.12 As shown, when the light controller 130 is installed, the electrode 135a exposed from the attachment portion 131a abuts on the conductor 153a, and the electrode 136a abuts on the conductor 154a. Therefore, the light controller 130 and the frame 110 are electrically connected to each other. That is, when the light controller 130 is installed on the frame 110, the light controller 130 and the frame 110 are electrically connected to each other.

[0088] In addition, if Fig.12 As shown, when the attachment portion 131a is fixed to the extension portion 150a, the waterproof member 155a is pressed against the surface of the upper plate 138 around the opening 131a1 to seal the conductors 153a and 154a in the opening 131a1. This makes it possible to prevent water and dust from entering the opening 131a1 from the outside. That is, the electrical components such as the conductors 153a and 154a are reliably protected from water and dust.

[0089] When the fixing member 171a is pivoted in a direction away from the extension portion 150a, the attachment portion 131a is detached from the extension portion 150a. Figures 9 to 12 For example, extension 150b includes conductors corresponding to conductors 153a and 154a (referred to as "conductors 153b and 154b").

[0090] As described above, the pair of attaching and detaching units 170a and 170b enable detachable attachment of the attaching portions 131a and 131b provided at both ends of the light controller 130. Figure 6 As described above, the light controller 130 has a flat plate shape when not attached. When the light controller 130 is not installed, the length ( Figure 7 L1 shown in FIG. 1 is greater than the length ( L1 shown in FIG. 1 ) of a pair of attachment and detachment units 170a and 170b of the connection frame 110. Figure 4 L2) shown in FIG. Figure 1As shown, when the attachment portions 131a and 131b are mounted on the pair of attachment and detachment units 170a and 170b, the pair of attachment and detachment units 170a and 170b hold the light controller 130 in a bent state. Specifically, while the light controller 130 is bent, the pair of attachment and detachment units 170a and 170b hold the light controller 130 to protrude in a direction away from the optical member 120 to follow the curved surface of the optical member 120. The pair of attachment and detachment units 170a and 170b hold the light controller 130 in a manner that the upper plate 138 of the light controller 130 and the optical member 120 face each other. That is, the cover plate 132 of the light controller 130 is placed on the outer side of the head mounted display 100.

[0091] While the pair of attachments 131a and 131b are bent, the pair of attachment and detachment units 170a and 170b maintain the pair of attachments 131a and 131b to approach each other. Therefore, the light controller 130 is gradually bent in an arc shape with respect to the direction (Y-axis direction) in which the extensions 150a and 150b extend. In other words, the light controller 130 is not bent in an arc shape around the direction (X-axis direction) connecting the pair of attachments 131a and 131b. That is, the attachments 131a and 131b themselves are not significantly bent, and remain substantially flat. This makes it possible to prevent the electrodes 135a, etc., disposed on the attachments 131a and 131b from being deformed or damaged due to bending.

[0092] like Figure 4 As shown in FIG. 1 , the extensions 150a and 150b, or the attachment and detachment units 170a and 170b, are provided at positions that sandwich the optical member 120. Therefore, the pair of attachment and detachment units 170a and 170b holds the light controller 130 to cover the optical member 120. Therefore, the head mounted display 100 allows light to pass through the light controller 130 to reach the optical member 120. The optical member 120 sandwiched between the attachment and detachment units 170a and 170b is shown as Figure 4 The optical member 120 is disposed between the attaching and detaching units 170a and 170b in the illustrated plan view.

[0093] When the light controller 130 is installed, the pair of attachment and detachment units 170a and 170b hold the light controller 130 while the optical member 120 and the light controller 130 are separated from each other. That is, the light controller 130 does not abut against the optical member 120 when it is installed on the head-mounted display 100. This makes it possible to maintain the optical characteristics of the optical member 120. This will be described in detail. The positional relationship between the optical member 120 and the display device 141 is accurately determined to provide an image to the viewer. For this reason, in the case where an external force or the like causes the fixed position of the optical member 120 to shift, the head-mounted display 100 may deteriorate in display performance. For example, the force applied when the viewer wipes the optical member 120 when cleaning, the force applied when the viewer grasps or carries the optical member 120, or the external force caused by the drop impact may deteriorate the display performance. In the head-mounted display 100 according to the embodiment, the optical member 120 and the light controller 130 are separated from each other. Therefore, it is possible to prevent the external force applied to the light controller 130 from being easily transmitted to the optical member 120 , which makes it possible to maintain the optical characteristics of the optical member 120 and ultimately prevent the head mount display 100 from being deteriorated in display performance.

[0094] In addition, the pair of attachment and detachment units 170a and 170b holds the light controller 130 on the side of the optical member 120 opposite to the side on which the image is provided (the side of the optical member 120 facing the viewer). That is, the light controller 130 is held in a position where the optical member 120 is sandwiched between the light controller 130 and the fastener 160. Therefore, the light controller 130 and the fastener 160 are disposed on the outside of the head-mounted display 100. Therefore, it is difficult to apply external force to the optical member 120, which ultimately prevents the head-mounted display 100 from deteriorating in display performance. Further, as described above, since the light controller 130 is maintained in a bent state, the external force applied to the light controller 130 can be dispersed. Even from this point of view, the head-mounted display 100 according to the embodiment can be prevented from deteriorating in display performance.

[0095] 3. Attachment and removal mechanism (2)

[0096] The previous paragraphs show an example of fixing the light controller 130 by a pivot mechanism using the fixing member 171a. However, the present invention is not limited to this example, and the light controller 130 may be fixed by another mechanism. Figures 13 to 15 Modifications to the attachment and detachment mechanisms are described. Fig.13 2 is a perspective view showing a portion of the light controller 230 and a portion of the extending portion 250 a according to a modification. Fig.14 is a front view of a light controller 230 and an extending portion 250 a according to a modification. Fig.15 is schematically shown along Fig.14A view of a cross section taken by arrow CC in FIG.

[0097] Figures 13 to 15 The light controller 230 shown corresponds to the light controller 130, and the extension 250a corresponds to the extension 150a. Fig.13 As shown, the extension part 250a is formed with an opening 251a, or a space in which a part of the side surface is hollowed out. The opening 251a is a slit. When the attachment part 231a of the light controller 230 is inserted into the opening 251a, the light controller 230 is held.

[0098] like Fig.14 As shown, the attachment portion 231a is formed in such a manner that the outer shape of the attachment portion 231a abuts against the inner surface of the opening 251a. Therefore, the attachment portion 231a is slid into the opening 251a to determine the position of the attachment portion 231a and fix the attachment portion 231a to the opening 251a. In addition, as shown in FIG. Fig.15 As shown, when the attachment portion 231a is inserted into the opening 251a, the electrode 236a provided in the attachment portion 231a and the conductor 254a provided in the extension portion 250a abut against each other. Similarly, the electrode 235a and the conductor 253a abut against each other. This configuration enables electrical conduction between the light controller 230 and the head mounted display 100.

[0099] Although not described, the attachment portion corresponding to the attachment portion 131b and the extension portion corresponding to the extension portion 150b have the same Figures 13 to 15 The institutions shown are similar to those shown.

[0100] In this way, even according to the modified attachment and detachment mechanism, the light controller 230 can be attached to or detached from the head-mounted display 100, and when the light controller 230 is attached to the head-mounted display 100, electrical conduction can be performed between the light controller 230 and the head-mounted display 100.

[0101] 4. Wiring pattern

[0102] Next, we will refer to Figures 16 to 18 The wiring pattern of the light controller 130 is described. Fig.16 is a front view schematically showing a light controller 130 according to an embodiment. Fig.16 Schematically shows Figure 8 1 , but for convenience, the wires 135 and 136 are represented by solid lines. Fig.17 It is a view for explaining the applied voltage. Fig.18 is a diagram showing an example of a voltage applied to the dimming material 134 .

[0103] like Fig.16 As shown, the wires 135 and 136 are respectively arranged in the peripheral portion 134a and the peripheral portion 134b, that is, at both ends of the direction intersecting with the direction connecting a pair of attachment portions 131a and 131b in the plan view of the light controller 130 (or the cover plate 132 used as a substrate, etc.). Specifically, the positive wire 135 connects the electrode 135a of one attachment portion 131a with the electrode 135b of another attachment portion 131b through a peripheral portion 134a. In other words, the positive wire 135 extends from one attachment portion 131a to another attachment portion 131b through a peripheral portion 134a. The negative wire 136 connects the electrode 135a of one attachment portion 131a with the electrode 135b of another attachment portion 131b through another peripheral portion 134b. In other words, the negative electrode line 136 extends from one attachment portion 131 a to the other attachment portion 131 b through the other outer peripheral portion 134 b .

[0104] Fig.17 An image of the voltage applied to the dimming material 134 via the wires 135 and 136 is shown. Fig.17 The voltages shown in are examples, and the present invention is not limited to these values. Fig.17 As shown, a voltage of +5V is applied to the positive wire 135. In this case, a voltage of +5V is applied to the vicinity of the wire 135 (or around the peripheral portion 134a). However, a lower voltage is applied to an area away from the wire 135. For example, a voltage of +3V is applied to the opposite side of the wire 135 (i.e., around the peripheral portion 134b). Similarly, a voltage of -5V is applied to the negative wire 136. In this case, a voltage of -5V is applied to the vicinity of the wire 136, but, for example, a voltage of -3V is applied to the opposite side of the wire 136.

[0105] In addition, in the lead 135, the applied voltage is not reduced near the attachment portion 131a provided with the electrode 135a or near the attachment portion 131b provided with the electrode 135b, but the applied voltage is reduced at the central portion of the peripheral portion 134a away from the attachment portion 131a and the attachment portion 131b. For example, when a voltage of +5V is applied to the positive line 135, the voltage applied to the vicinity of the attachment portion 131a or the vicinity of the attachment portion 131b is +5V, but the voltage applied to the central portion of the peripheral portion 134a is +4V. A voltage is applied to the lead 136 in a similar manner.

[0106] Fig.18 The combination of the above voltages is shown in FIG. Fig.18 An image showing the voltage applied to each region of the dimming material 134 is shown. Fig.18In the table shown, the numbers "+5", "+4", and "+3" in the left column 135p1 indicate voltages to be applied from the positive line 135 to the region near the attachment portion 131b of the dimming material 134. As described above, a voltage of +5V is applied to the upper left region near the attachment portion 131b and near the wire 135. However, a lower voltage is applied to a region away from the wire 135 (to a lower region), even if the region is near the attachment portion 131b. Fig.18 shows that the voltage drops to Fig.17 Example of +4V or +3V in .

[0107] exist Fig.18 In the table shown, the numbers "-3", "-4", and "-5" in the left second column 136p1 indicate voltages to be applied from the negative line 136 to the region near the attachment portion 131b of the dimming material 134. As described above, a voltage of -5V is applied to the lower left region near the attachment portion 131b and near the wire 136. However, a lower voltage is applied to a region away from the wire 136 (to the upper region), even if the region is near the attachment portion 131b. Fig.18 Examples of voltage drops to -4V or -3V are shown.

[0108] Fig.18 The potential difference in each area is also shown. For example, in the dimming material 134, the potential difference of the area near the attachment portion 131b and the wire 135 (upper left area) is "8" because the voltages applied to these areas are +5V and -3V. In addition, the potential difference of the area near the attachment portion 131b and between the wire 135 and the wire 136 (middle left area) is "8" because the voltages applied to these areas are +4V and -4V.

[0109] exist Fig.18 In the table shown, the numbers "+4", "+3", and "+2" in the third column 135p2 from the left represent the voltage applied from the positive line 135 to the central area of ​​the dimming material 134 between the attachment portion 131a and the attachment portion 131b. As described above, since the voltage applied in the area away from both the attachment portions 131a and 131b is reduced, Fig.18 The example in shows an overall reduction of 1V in voltage compared to column 135p1.

[0110] Similarly, column 136p2 shows an example of a voltage applied from the negative line 136 to the center area of ​​the dimming material 134. Column 135p3 shows an example of a voltage applied from the positive line 135 to an area of ​​the dimming material 134 near the attachment portion 131a. Column 136p3 shows an example of a voltage applied from the negative line 136 to an area of ​​the dimming material 134 near the attachment portion 131a.

[0111] The greater the potential difference between the positive electrode and the negative electrode, the more the transmittance of the dimming material 134 is reduced. Therefore, the change in the potential difference between the regions of the dimming material 134 changes the transmittance of each region and produces an uneven image, which causes discomfort to the viewer. In addition, the greater the potential difference between the positive electrode and the negative electrode, the faster the reaction speed becomes, thereby reducing the transmittance of the dimming material 134. Therefore, the change in the potential difference between the regions of the dimming material 134 changes the speed of each region, thereby changing the transmittance, which causes discomfort to the viewer.

[0112] For example, in Fig.18 , the potential difference between the areas of the dimming material 134 is "6" to "8". That is, there is almost no change in the potential difference. In particular, the potential differences in the right area and the left area are "8", "8", and "8" from the top, which indicates no change. The potential differences in the upper area and the lower area are all "8", "6", and "8" from the left, which indicates the same pattern. In the right area and the left area, the potential difference is "8" and large, which enables the transmittance to be quickly reduced. For these reasons, in Fig.16 In the wiring pattern, the right and left regions of the dimming material 134 have similar characteristics, and the upper and lower regions of the dimming material 134 have similar characteristics. Therefore, it is possible to prevent the viewer from feeling unevenness in the image.

[0113] The wiring pattern of the light controller 130 is not limited to Fig.16 In the following, we will refer to Figures 19 to 26 Other examples of wiring patterns are described. Fig.19 , Fig.21 , Fig.23 and Fig.25 is a view showing an example of a wiring pattern according to a modification. Fig. 20 , Fig. 22 , Fig.24 and Fig.26 is a view showing an example of a voltage applied to the dimming material 134 according to a modification. Fig. 20 The conditions of applied voltage shown in the above are similar to Fig.17 The conditions in are similar.

[0114] exist Fig.19 In, for example, the positive wire 235 extends from one attachment portion 131a through one peripheral portion 134a to an area before another attachment portion 131b. That is, one end of the wire 235 is connected to the electrode 135a, while the other end of the wire 235 is not connected to the electrode 135b. In addition, the negative wire 236 extends from another attachment portion 131b to an area before one attachment portion 131a through another peripheral portion 134b. That is, one end of the wire 236 is connected to the electrode 136b, while the other end of the wire 236 is not connected to the electrode 136a. In Fig.19 In the embodiment, for example, the attachment portion 131a need not be provided with the electrode 136a, and the attachment portion 131b need not be provided with the electrode 135b. Fig.19 , Fig.21 and Fig.23 In the wiring pattern shown, when a conductive line extends to the attachment portion 131 a or the attachment portion 131 b , the conductive line is considered to be connected to an electrode provided in the attachment portion 131 a or the attachment portion 131 b .

[0115] exist Fig.19 In the embodiment, for example, since one end of the wires 235 and 236 does not conduct electricity between the electrodes, the applied voltage decreases toward the other end without electrical conduction between the electrodes. Fig. 20 Shows Fig.19 Example of applying voltage in a wiring pattern. Fig. 20 As shown, the potential difference across the dimming material 134 is lower than Fig.18 The potential difference shown, but Fig. 20 The potential differences between the regions in are equal to each other. Fig.19 In the wiring pattern, the right and left regions and the upper and lower regions of the dimming material 134 have similar characteristics. Therefore, it is possible to prevent the viewer from feeling unevenness in the image.

[0116] exist Fig.21 In the embodiment, for example, the positive line 335 extends from one attachment portion 131a to an area before another attachment portion 131b through one peripheral portion 134a. Fig.19 The illustrated lead wire 235 is similar. In addition, the negative line 336 extends from one attachment portion 131a to a region before the other attachment portion 131b through the other peripheral portion 134b.

[0117] For example, in Fig.21 In the embodiment, since the positive line 335 and the negative line 336 are not electrically conductive between the electrodes on the attachment portion 131 b , the voltage applied to the region on the attachment portion 131 b of the dimming material 134 is reduced as a whole. Fig. 22 Shows Fig.21 Example of applying voltage in a wiring pattern. Fig. 22 As shown, the applied voltage on the attachment portion 131b of the dimming material 134 is reduced, but the potential difference in the upper area and the lower area has a similar pattern. Therefore, it is possible to prevent the viewer from feeling unevenness in the image from top to bottom. In addition, in Fig.21 In the wiring pattern of FIG. 1 , the electrode can be provided only on the attachment portion 131a, and the conductor can be provided only on the extension portion 150a. This makes it possible to reduce Fig.21 Manufacturing costs in the example shown.

[0118] exist Fig.23 In the embodiment, for example, the positive line 435 and the negative line 436 extend from one attachment part 131a to another attachment part 131b through one peripheral part 134a. Specifically, the positive line 435 connects the electrode 135a of one attachment part 131a with the electrode 135b of the other attachment part 131b through one peripheral part 134a. In addition, the negative line 436 connects the electrode 136a with the electrode 136b through one peripheral part 134a.

[0119] Fig.24 Shows Fig.23 Example of applied voltage in a wiring pattern. Fig.24 As shown, the voltage applied in the area where the wires 435 and 436 are not provided (near the peripheral portion 134b) is reduced, but the potential difference between the right area and the left area has a similar pattern. Therefore, it is possible to prevent the viewer from feeling unevenness in the image from right to left. Since the upper area (near the peripheral portion 134a) where the wires 435 and 436 are provided has a larger potential difference, the performance in the upper area of ​​the dimming material 134 can be enhanced. In addition, for example, in Fig.23 In the embodiment of the present invention, there is no wire at the bottom. Therefore, the display area can be expanded, which provides a wide field of view for the viewer. Depending on the head mounted display, the upper area of ​​the light controller 130 may overlap with the substrate 140 of the frame 110. Fig.23 When the wiring pattern shown is applied to such a head mounted display, the wiring pattern can be hidden.

[0120] exist Fig.25 In the embodiment, for example, the positive line 535a and the negative line 536a included in the first wire unit 53A extend from one attachment portion 131a to one attachment portion 131a through one peripheral portion 134a, the central portion of the dimming material 134, and the other peripheral portion 134b. In addition, the positive line 535b and the negative line 536b included in the second wire unit 53B extend from another attachment portion 131b to another attachment portion 131b through one peripheral portion 134a, the central portion of the dimming material 134, and the other peripheral portion 134b. That is, in two separate areas of the dimming material 134 on one side close to the attachment portion 131a and one side close to the attachment portion 131b, the first wire unit 53A is provided on the peripheral portion of the area on one side close to the attachment portion 131a. The second wire unit 53B is provided on the peripheral portion of the area on one side close to the attachment portion 131b.

[0121] exist Fig.25 For example, one end of the wire 535a is connected to the electrode 135a of the attachment portion 131a, but the other end of the wire 535a is not connected to the electrode. One end of the wire 536a is connected to the electrode 136a of the attachment portion 131a, but the other end of the wire 536a is not connected to the electrode. Fig.15 The upper side of the conductor 535b and the lower side of the conductor 536b are arranged in a similar manner, and only Fig.15 The upper end of the electrode is connected to the electrode provided in the attachment portion 131b.

[0122] Fig.26 Shows Fig.25 Example of applied voltage in a wiring pattern. Fig.26 As shown in FIG. 1 , the voltage applied to the other end of the wire (the side not connected to the electrode) is reduced, but the upper region (near the outer periphery 134a) has a large potential difference. Therefore, the characteristics in the upper region of the dimming material 134 can be enhanced. In addition, Fig.25 In the example, the potential differences in the right and left regions of the light controller 130 have similar patterns. Therefore, it is possible to prevent the viewer from feeling unevenness in the image from right to left. Fig.25 In the embodiment of the present invention, for example, the right area and the left area of ​​the light controller 130 can be independently controlled. Therefore, an image can be provided according to the intended use of the head mounted display 100.

[0123] 5. Modifications

[0124] Described hereinafter are modifications of the above-described head mounted display 100 .

[0125] 5-1. Light controller (1)

[0126] In the above embodiment, the light controller 130 is attached to and detached from the extensions 150a and 150b. However, the present invention is not limited to this example. Fig. 27 To describe this. Fig. 27 is a front view schematically showing a light controller 330 according to a modification.

[0127] like Fig. 27 As shown, the light controller 330 according to the modification has a shape in which both ends of one side of a substantially rectangular shape protrude in the same direction. The protruding areas correspond to the attachment portions 331a and 331b. In this case, the attachment and detachment unit to which the attachment portions 331a and 331b are detachably attached is provided on one surface 140a of the substrate 140. The attachment and detachment unit provided on the substrate 140 may be Fig. 9 or Fig.13 In this way, the shape of the light controller 130 applied to the head mounted display 100 can be appropriately changed.

[0128] exist Fig. 27In the embodiment, for example, the positive line 635 extends from one attachment portion 331a to another attachment portion 331b through one peripheral portion 134a. In addition, the negative line 636 extends from one attachment portion 331a to another attachment portion 331b through another peripheral portion 134b. However, the present invention is not limited to this example, and Fig. 27 The wiring pattern shown can be changed to Fig.19 , Fig.21 , Fig.23 and Fig.25 The wiring pattern shown.

[0129] 5-2. Light controller (2)

[0130] In the above-described embodiment, the light controller 130 includes a single dimming material 134. However, the present invention is not limited to this example, and a plurality of dimming materials may be included in one layer. Fig.28 To describe this. Fig.28 is a perspective view schematically illustrating an optical member 420 and a light controller 430 according to a modification.

[0131] like Fig.28 As shown, the optical member 420 according to the modification has a shape bent at the center portion. Specifically, the optical member 420 is bent at a predetermined curvature X (≥0) from both ends to the center portion, and the center portion of the optical member 420 is bent at a curvature Y greater than the curvature X. The optical member 420 may be flat rather than curved from both ends to the center portion.

[0132] The light controller 430 according to the modification includes a cover plate 432 and dimming materials 434a and 434b. Figure 5 The cover plate 132 , lower plate 133 , dimming material 134 , wires 135 and 136 , adhesive member 137 , and upper plate 138 shown correspond to portions thereof, but the figure shows a cover plate 432 corresponding to the cover plate 132 .

[0133] In two separate areas of the cover plate 432 located on one side close to the attachment portion 431a and one side close to the attachment portion 431b, the dimming material 434a is disposed on the area on the side close to the attachment portion 431a. In addition, the dimming material 434b is disposed in the area on the side close to the attachment portion 431b. The dimming material 434a and the dimming material 434b are disposed in areas that do not overlap each other. The area where the dimming materials 434a and 434b are disposed is less flexible and less bendable than the area between the dimming material 434a and the dimming material 434b (i.e., the area without the dimming material).

[0134] That is, Fig.28As shown, when the light controller 430 is mounted on the frame 110, the area between the dimming material 434a and the dimming material 434b is bent to a greater extent than the area where the dimming materials 434a and 434b are provided. Therefore, the light controller 430 is mounted on the frame 110 while being bent along the curved shape of the optical member 420. Dividing and sealing the dimming material in this way makes it possible to control the bending mode of the light controller 430.

[0135] 5-3. Image Output

[0136] In the above embodiment, for example, an image is provided to the viewer through the optical member 120 such as a half mirror. However, the present invention is not limited to this example. Fig.29 To describe this. Fig.29 is a view schematically showing a cross section of a head-mounted display according to a modification.

[0137] like Fig.29 As shown, the substrate 440 according to the modification includes an optical engine 441. The optical engine 441 is, for example, a display device or an optical lens. Similar to the display device 141, the optical engine 441 emits images for presenting various types of images and information to a viewer.

[0138] The light guide plate 442 or an optical member is connected to the optical engine 441. The light guide plate 442 guides the image output from the optical engine 441 and provides the image to the optical engine 441. Fig.29 A viewer in the direction F13 shown. The light guide plate 442 includes a transparent member capable of transmitting external light. Examples of the light guide plate 442 include a holographic light guide plate and a dielectric multilayer film light guide plate. Fig.29 The example in FIG. 4 also shows a transparent resin goggle 443 for protecting the light guide plate 442 .

[0139] 5-4. Dimensions of light controller

[0140] like Figure 4 As shown, the length of the light controller 130 in the vertical direction (the extension direction of the optical member 120) is shorter than the length of the optical member 120 in the vertical direction (the extension direction of the optical member 120). However, the present invention is not limited to this example, and the vertical length of the light controller 130 may be equal to or greater than the vertical length of the optical member 120. That is, the size of the light controller 130 may cover the entire optical member 120 in a plan view. In addition, the upper portion of the light controller 130 may extend to a position overlapping with the substrate 140 in a plan view. Therefore, the wires disposed on the upper portion of the light controller 130 enter the blind spot of the substrate 140 and are out of the viewer's sight.

[0141] 5-5. Shape of light controller

[0142] like Figure 7 and Figure 8 As shown, the light controller 130 protrudes from the central part of both sides of the substantially rectangular shape. Therefore, the attachment parts 131a and 131b set in the central part of the light controller 130 are kept so that the light controller 130 is uniformly bent. However, the present invention is not limited to this example, and the light controller 130 can protrude from the entire range of each side of the substantially rectangular shape. In this case, the two ends of the substantially rectangular shape correspond to the attachment parts 131a and 131b. Alternatively, the light controller 130 can protrude from the upper or lower part of both sides of the substantially rectangular shape, rather than from the central part of both sides of the substantially rectangular shape.

[0143] 5-6. Positioning mechanism

[0144] The positioning mechanism is not limited to the above examples. For example, the frame 110 may have a positioning pin 152a1 or a positioning pin 152a2. In this case, the light controller 130 is formed with a positioning hole corresponding to the positioning pin of the frame 110. The extension 150b has a similar positioning mechanism.

[0145] 5-7. Application

[0146] In the above embodiment, the head mounted display 100 is shown as an example of an AR device, but the present invention is not limited to this example. Specifically, the embodiment can be applied to any device as long as it is a head mounted display (such as glasses) including an optical controller that changes transmittance as a voltage is applied.

[0147] 6. Effect

[0148] As described above, the head mounted display 100 according to the embodiment includes a frame 110 and an optical member 120. The optical member 120 is fixed to the frame 110 to provide an image. The frame 110 includes a pair of attachment and detachment units 170a and 170b, and both ends of the light controller 130 (corresponding to the attachment portions 131a and 131b) are detachably attached to the pair of attachment and detachment units 170a and 170b. While the optical member 120 and the light controller 130 are separated from each other, the pair of attachment and detachment units 170a and 170b hold the light controller 130. At least one of the pair of attachment and detachment units 170a and 170b is electrically connected to at least one of the two ends of the light controller 130.

[0149] According to the head-mounted display 100, mounting the detachable light controller 130 on the frame 110 enables electrical connection between the light controller 130 and the frame 110, which enhances the operability of the head-mounted display 100. For example, the viewer can use the head-mounted display 100 with a transmittance of 100% by detaching the light controller 130. In addition, by attaching different types of light controllers 130 to the head-mounted display 100 according to the intended use, the viewer can use the head-mounted display 100 with a suitable light controller 130 for various scenes.

[0150] Furthermore, the pair of attaching and detaching units 170 a and 170 b maintains the light controller 130 in a bent state.

[0151] This configuration makes it possible to disperse the external force applied to the light controller 130, which makes it difficult to apply the external force to the optical member 120 and ultimately prevents degradation in display performance of the head-mounted display 100. Furthermore, the design of the head-mounted display 100 can be enhanced.

[0152] Furthermore, the pair of attaching and detaching units 170 a and 170 b maintains the light controller 130 in a bent state, but the light controller 130 has a flat plate shape when not attached.

[0153] According to the head mount display 100, the light controller 130 is bent only when it is not mounted, which makes it easy to carry the light controller 130. Therefore, the operability of the head mount display 100 can be enhanced.

[0154] Furthermore, the pair of attaching and detaching units 170 a and 170 b holds the light controller 130 , wherein the light controller 130 is bent in such a manner that both ends of the light controller 130 approach each other.

[0155] That is, according to the head mounted display 100, the light controller 130 is bent in such a manner that the attachment portions 131a and 131b as both ends of the light controller 130 are close to each other. Therefore, the attachment portions 131a and 131b themselves are not substantially bent. This makes it possible to prevent the electrode 135a and the like from being deformed or damaged due to bending.

[0156] Furthermore, the pair of attaching and detaching units 170 a and 170 b holds the light controller 130 on a side of the optical member 120 opposite to a side on which an image is provided.

[0157] Therefore, the light controller 130 is provided outside the head mount display 100 , which makes it difficult to apply an external force to the optical member 120 , and prevents the head mount display 100 from being deteriorated in display performance.

[0158] The optical member 120 has a surface providing an image and a surface opposite to the surface, and the surface providing an image is configured to reflect light, and the opposite surface is configured to transmit light.

[0159] This configuration enhances the operability of the head mounted display 100 that implements AR.

[0160] The frame 110 includes a flat plate-shaped substrate 140 and a pair of flat plate-shaped extensions 150a and 150b extending in a predetermined direction from one surface 140a of the substrate 140. The optical member 120 is sandwiched between the pair of extensions 150a and 150b and extends in a predetermined direction from one surface 140a. The pair of attachment and detachment units 170a and 170b are provided on the pair of extensions 150a and 150b, and hold both ends of the light controller 130 in a manner that the light controller 130 covers the optical member 120.

[0161] That is, since the attachment portions 131a and 131b are attached to a pair of flat plate-shaped extension portions 150a and 150b, the attachment portions 131a and 131b are less likely to bend. That is, the attachment portions 131a and 131b themselves are difficult to bend. That is, since the electrodes 135a and 135b are less likely to bend, the electrode 135a and the like can be prevented from being deformed or damaged.

[0162] Furthermore, the frame 110 includes conductors (corresponding to the conductors 153 a , 154 a , 153 b , 154 b ) electrically connected to the light controller 130 , and a waterproof member 155 a which is disposed around the conductors and seals the conductors when pressed against the light controller 130 .

[0163] Therefore, electrical parts can be reliably protected from water and dust.

[0164] The frame 110 includes a first positioning member (corresponding to the positioning pin 152a1) inserted into a first hole (corresponding to the positioning hole 132a1) formed in the light controller 130 and a second positioning member (corresponding to the positioning pin 152a2) placed at a position separated from the first positioning member and inserted into a second hole (corresponding to the positioning hole 132a2) formed in the light controller 130.

[0165] This configuration enables a viewer to easily attach the light controller 130 to the frame 110 .

[0166] The light controller 130 according to the embodiment includes a flexible flat substrate (corresponding to the cover plate 132, the lower plate 133, the adhesive member 137, and the upper plate 138), a flat dimming material 134 sealed to the substrate, attachment portions 131a and 131b, and an electrical connector (corresponding to the electrodes 135a and 135b). A pair of attachment portions 131a and 131b are provided at both ends of the substrate, and are detachably attached to a pair of attachment and detachment units 170a and 170b of the frame 110 of the head mounted display 100. The electrical connector is provided on at least one of the pair of attachment portions 131a and 131b, and is electrically connected to at least one of the pair of attachment and detachment units 170a and 170b of the frame 110.

[0167] With this configuration, the light controller 130 can be detachably attached to the head-mounted display 100, and can be electrically connected to the head-mounted display 100 by being attached to the head-mounted display 100. Therefore, the operability of the light controller 130 can be enhanced.

[0168] The length connecting the pair of attaching portions 131 a and 131 b is longer than the length of the pair of attaching and detaching units 170 a and 170 b of the connection frame 110 .

[0169] With this configuration, the light controller 130 is curved when attached to the head-mounted display 100. Therefore, the design of the head-mounted display 100 can be enhanced.

[0170] It should be noted that the effects described herein are for illustrative purposes rather than limiting purposes, and other effects can be achieved according to the technology of the present disclosure. In other words, in addition to or in place of the above effects, the technology according to the present disclosure can exhibit other effects that are obvious to those skilled in the art based on the description herein.

[0171] The present technology may also have the following configurations. (1)

[0173] A head mounted display, comprising:

[0174] Framework; and

[0175] an optical member fixed to the frame and configured to provide an image,

[0176] wherein the frame comprises a pair of attachment and detachment units, both ends of the light controller are detachably connected to the pair of attachment and detachment units, and

[0177] At least one of the pair of attaching and detaching units is electrically connected to at least one of both ends of the light controller. (2)

[0179] The head mounted display according to (1),

[0180] wherein the pair of attaching and detaching units holds the light controller in a state where the optical member and the light controller are separated from each other. (3)

[0182] The head mounted display according to (1) or (2),

[0183] wherein the pair of attaching and detaching units holds the light controller when the light controller is bent. (4)

[0185] According to the head mounted display described in (3),

[0186] wherein the pair of attaching and detaching units holds the light controller in a state where the light controller is bent, and the light controller has a flat plate shape when not attached. (5)

[0188] The head mounted display according to (3) or (4),

[0189] The pair of attaching and detaching units holds the light controller in a state where the light controller is bent so that both ends of the light controller approach each other. (6)

[0191] The head mounted display according to any one of (1) to (5),

[0192] wherein the pair of attaching and detaching units holds the light controller on a side of the optical member opposite to a side on which the image is provided. (7)

[0194] The head mounted display according to any one of (1) to (6),

[0195] The optical member has a surface providing the image and a surface opposite to the surface, the surface providing the image is configured to reflect light, and the opposite surface is configured to transmit light. (8)

[0197] The head mounted display according to any one of (1) to (7),

[0198] wherein the frame includes a substrate having a flat plate shape and a pair of extensions extending from one surface of the substrate in a predetermined direction and having a flat plate shape,

[0199] The optical member is sandwiched between the pair of extensions and extends from one surface in the predetermined direction, and

[0200] The pair of attaching and detaching units are provided on the pair of extending portions, and are configured to hold both ends of the light controller so that the light controller covers the optical member. (9)

[0202] The head mounted display according to any one of (1) to (8),

[0203] The framework includes:

[0204] a conductor electrically connected to the light controller; and

[0205] A waterproof member is disposed around the conductor and is configured to seal the conductor when pressed against the light controller. (10)

[0207] The head mounted display according to any one of (1) to (9),

[0208] The framework includes:

[0209] a first positioning member inserted into a first hole formed in the light controller; and

[0210] A second positioning member is provided at a position separated from the first positioning member and is inserted into a second hole formed in the light controller. (11)

[0212] A light controller, comprising:

[0213] A substrate having flexibility and a flat plate shape;

[0214] A dimming material, disposed on the substrate and having a flat plate shape;

[0215] a pair of attachment portions provided at both ends of the base material and being a pair of attachment and detachment units detachably attached to a frame of a head mounted display; and

[0216] An electrical connector is provided on at least one of the pair of attachment portions and is electrically connected to at least one of the pair of attachment and detachment units of the frame. (12)

[0218] The light controller according to (11),

[0219] wherein a length connecting the pair of attachment portions is longer than a length connecting the pair of attachment and detachment units of the frame. (13)

[0221] The light controller according to (11) or (12), further comprising:

[0222] The positive electrode wire and the negative electrode wire are provided on respective outer peripheral portions at both ends of the light controller in a direction intersecting with a direction connecting the pair of attachment portions in a plan view of the base material. (14)

[0224] The light controller according to (13),

[0225] wherein the positive line extends from one attachment portion to another attachment portion through a peripheral portion, and

[0226] The negative electrode line extends from one attachment portion to the other attachment portion through the other peripheral portion.

[0227] (15) The light controller according to (13),

[0228] wherein the positive line extends from one attachment portion to an area before another attachment portion through an outer peripheral portion, and

[0229] The negative electrode line extends from the other attachment portion to a region before the one attachment portion through the other peripheral portion. (16)

[0231] The light controller according to (13),

[0232] wherein the positive line extends from one attachment portion to an area before another attachment portion through an outer peripheral portion, and

[0233] The negative electrode line extends from one attachment portion to a region before the other attachment portion through the other peripheral portion. (17)

[0235] The light controller according to (13),

[0236] The positive electrode line and the negative electrode line extend from one attachment portion to another attachment portion through one peripheral portion. (18)

[0238] The light controller according to (13), comprising the following as the positive line and the negative line:

[0239] a first positive line and a first negative line extending from one attachment portion to one attachment portion through one peripheral portion, a central portion of the light-adjusting material, and another peripheral portion; and

[0240] The second positive line and the second negative line extend from the other attachment portion to the other attachment portion through one peripheral portion, the central portion of the light-adjusting material, and the other peripheral portion. (19)

[0242] The light controller according to any one of (11) to (18),

[0243] The dimming material includes a first dimming material and a second dimming material, the first dimming material is arranged in a region of the substrate close to one attachment portion, the second dimming material is arranged in a region of the substrate close to another attachment portion, the region close to the other attachment portion does not overlap with the region close to the one attachment portion, and

[0244] A region where the first dimming material and the second dimming material are disposed has lower flexibility than a region between the first dimming material and the second dimming material. (20)

[0246] The light controller according to any one of (11) to (19),

[0247] Wherein, the light controller is an electrochromic device.

[0248] Reference numerals list

[0249] 100 Head-mounted display

[0250] 110 Frame

[0251] 120 Optical components

[0252] 130 Light Controller

[0253] 140 substrate

[0254] 150a, 150b extension

[0255] 170a, 170b Attachment and detachment unit

Claims

1. A head mounted display, comprising: frame; as well as an optical member fixed to the frame and configured to provide an image, wherein the frame comprises a pair of attachment and detachment units, and both ends of the light controller are detachably attached to the pair of attachment and detachment units, At least one of the pair of attaching and detaching units is electrically connected to at least one of both ends of the light controller, and wherein the pair of attaching and detaching units holds the light controller in a state where the light controller is bent, and the light controller has a flat plate shape when not attached.

2. The head mounted display according to claim 1, in, The pair of attaching and detaching units holds the light controller with the optical member and the light controller separated from each other.

3. The head mounted display according to claim 1, in, The pair of attaching and detaching units holds the light controller in a state where the light controller is bent so that both ends of the light controller approach each other.

4. The head mounted display according to claim 1, in, The pair of attaching and detaching units holds the light controller on a side of the optical member opposite to a side on which the image is provided.

5. The head mounted display according to claim 1, in, The optical member has a surface providing the image and a surface opposite to the surface, the surface providing the image is configured to reflect light, and the opposite surface is configured to transmit light.

6. The head mounted display according to claim 1, in, The frame includes a base plate having a flat plate shape and a pair of extensions extending from one surface of the base plate in a predetermined direction and having a flat plate shape, The optical member is sandwiched between the pair of extensions and extends from one surface in the predetermined direction, and The pair of attaching and detaching units are provided on the pair of extending portions, and are configured to hold both ends of the light controller so that the light controller covers the optical member.

7. The head mounted display according to claim 1, in, The framework includes: a conductor electrically connected to the light controller; and A waterproof member is disposed around the conductor and is configured to seal the conductor when pressed against the light controller.

8. The head mounted display according to claim 1, in, The framework includes: a first positioning member inserted into a first hole formed in the light controller; and A second positioning member is provided at a position separated from the first positioning member and is inserted into a second hole formed in the light controller.

9. A light controller comprising: A substrate having flexibility and a flat plate shape; A dimming material, disposed on the substrate and having a flat plate shape; a pair of attachment portions provided at both ends of the base material and being a pair of attachment and detachment units detachably attached to a frame of a head mounted display; an electrical connector provided on at least one of the pair of attachment portions and electrically connected to at least one of the pair of attachment and detachment units of the frame; as well as The positive electrode wire and the negative electrode wire are provided on respective outer peripheral portions at both ends of the light controller in a direction intersecting with a direction connecting the pair of attachment portions in a plan view of the base material.

10. The light controller according to claim 9, in, A length connecting the pair of attachment portions is longer than a length connecting the pair of attachment and detachment units of the frame.

11. The light controller according to claim 9, in, The positive line extends from one attachment portion to another attachment portion through one peripheral portion, and The negative electrode line extends from one attachment portion to the other attachment portion through the other peripheral portion.

12. The light controller according to claim 9, in, The positive line extends from one attachment portion to an area before the other attachment portion through one peripheral portion, and The negative electrode line extends from the other attachment portion to a region before the one attachment portion through the other peripheral portion.

13. The light controller according to claim 9, in, The positive line extends from one attachment portion to an area before the other attachment portion through one peripheral portion, and The negative electrode line extends from one attachment portion to a region before the other attachment portion through the other peripheral portion.

14. The light controller according to claim 9, in, The positive electrode wire and the negative electrode wire extend from one attachment portion to the other attachment portion through one peripheral portion.

15. The light controller according to claim 9, comprising the following as the positive line and the negative line: a first positive line and a first negative line extending from one attachment portion to one attachment portion through one peripheral portion, a central portion of the light-adjusting material, and another peripheral portion; and The second positive line and the second negative line extend from the other attachment portion to the other attachment portion through one peripheral portion, the central portion of the light-adjusting material, and the other peripheral portion.

16. The light controller according to claim 9, in, The dimming material includes a first dimming material and a second dimming material, the first dimming material is disposed in a region of the substrate close to one attachment portion, the second dimming material is disposed in a region of the substrate close to another attachment portion, the region close to the other attachment portion does not overlap with the region close to the one attachment portion, and A region where the first dimming material and the second dimming material are disposed has lower flexibility than a region between the first dimming material and the second dimming material.

17. The light controller according to claim 9, in, The light controller is an electrochromic device.

Images