Wearable display device and optical display unit

Abstract

To provide a wearable display device and an optical display unit that can suppress decrease in brightness of exterior light.SOLUTION: A wearable display device is attached to binoculars, which has a first lens barrel that accommodates a first objective lens and a first eyepiece lens, and a second lens barrel that accommodates a second objective lens and a second eyepiece lens. The wearable display device includes: an image display portion that displays image light while transmitting exterior light; a first support member that supports a first lens barrel; a second support member that supports a second lens barrel; a third support member that supports the image display portion; and a body member to which the first support member, the second support member, and the third support member are detachably attached. The body member has a movement mechanism that enables at least the third support member to move in a first direction in which the first support member and the second support member are arranged. The movement mechanism moves the third support member to a first position, where the first objective lens and the image display portion overlap, and a second position, where the first objective lens and the image display portion do not overlap in a plan view in the second direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wearable display device and an optical display unit.

Background Art

[0002] Patent Document 1 below discloses an optical device that reflects an image from a light source by a beam combining element composed of a half mirror provided at a position overlapping the optical axis of an objective optical system, so that the user can visually recognize the image superimposed on the external scene.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above optical device, since the beam combining element is always arranged at a position overlapping the optical axis of the objective optical system, even when an image is not displayed, the light from the external scene passes through the beam combining element. For this reason, there has been a problem that the brightness of the external scene light becomes dark.

Means for Solving the Problems

[0005] In order to solve the above problems, according to one aspect of the present invention, there is provided a wearable display device attached to a binocular telescope having a first lens barrel that houses a first objective lens and a first eyepiece lens, and a second lens barrel that houses a second objective lens and a second eyepiece lens, the wearable display device including: an image display unit that displays image light while transmitting external scene light; a first support member that supports the first lens barrel; a second support member that supports the second lens barrel; a third support member that supports the image display unit; and a main body member to which the first support member, the second support member, and the third support member are detachably attached, the main body member having a moving mechanism that enables at least the third support member to move in a first direction in which the first support member and the second support member are arranged side by side, the moving mechanism moving the third support member between a first position where the first objective lens and the image display unit overlap when viewed in a plan view in a second direction intersecting the first direction, and a second position where the first objective lens and the image display unit do not overlap.

[0006] Further, according to one aspect of the present invention, there is provided an optical display unit including a binocular telescope having a first lens barrel that houses a first objective lens and a first eyepiece lens, and a second lens barrel that houses a second objective lens and a second eyepiece lens, and the wearable display device according to the above aspect.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0008] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the drawings used in the following description may show enlarged portions of characteristic parts for ease of understanding of the characteristics, and the dimensional ratios of each component are not necessarily the same as the actual ones.

[0009] (First Embodiment) FIG. 1 is an exploded perspective view showing a schematic configuration of the optical display unit of the present embodiment. As shown in FIG. 1, the optical display unit 100 of the present embodiment includes binoculars 2 and a wearable display device 3. The binoculars 2 have a pair of left and right first lens barrels 20R and 20L, and a connecting portion 21 that connects the first lens barrel 20R and the second lens barrel 20L to each other. Each lens barrel 20R, 20L has a substantially cylindrical shape. Inside the first lens barrel 20R, a lens group 22R for the right eye is accommodated, and inside the second lens barrel 20L, a lens group 22L for the left eye is accommodated. The lens group 22R for the right eye and the lens group 22L for the left eye constitute a binocular optical system, and the optical axes PR, PL of each are parallel to each other.

[0010] In the following description, the arrangement of each member of the optical display unit 100 will be described using an XYZ coordinate system as necessary. In the present embodiment, the direction along the X-axis corresponds to the left-right direction as viewed from the user M of the binoculars 2 looking through the eyepiece lens, the direction along the Y-axis corresponds to the front-back direction as viewed from the user M, and the direction along the Z-axis is orthogonal to the X-axis and the Y-axis and corresponds to the up-down direction as viewed from the user M. In the following description, the direction parallel to the X-axis direction is called the left-right direction X, the direction parallel to the Y-axis direction is called the front-back direction Y, and the direction parallel to the Z-axis direction is called the up-down direction Z. Also, the +X side in the X-axis direction is called the "left side", and the -X side in the Y-axis direction is called the "right side". Also, the +Y side in the Y-axis direction is called the "front side", and the -Y side in the Y-axis direction is called the "rear side". Also, the +Z side in the Z-axis direction is called the "upper side", and the -Z side in the Z-axis direction is called the "lower side".

[0011] The right-eye lens group 22R includes an objective lens (first objective lens) 23R, an eyepiece lens (first eyepiece lens) 24R, and a prism. The left-eye lens group 22L has the same configuration as the right-eye lens group 22R. The left-eye lens group 22L includes an objective lens (second objective lens) 23L, an eyepiece lens (second eyepiece lens) 24L, and a prism.

[0012] The objective lenses 23R, 23L and the eyepiece lenses 24R, 24L may each be composed of a plurality of lenses or may be composed of a single lens. In the case of the present embodiment, the prism is composed of, for example, a pair of Porro prisms. The optical paths between the objective lens 23R and the eyepiece lens 24R and between the objective lens 23L and the eyepiece lens 24L are each bent by the prism, but the optical axes PR of the objective lens 23R and the eyepiece lens 24R and the optical axes PL of the objective lens 23L and the eyepiece lens 24L are linear. The binoculars 2 of the present embodiment are so-called Porro prism type binoculars.

[0013] The wearable display device 3 is used in a state of being attached to the binoculars 2. As shown in FIG. 1, the wearable display device 3 is detachable from the binoculars 2. The wearable display device 3 is a display device that superimposes and displays desired image light on the observed image of the outdoor scene observed by the binoculars 2. The user M of the wearable display device 3 visually recognizes the observed image in which the outdoor scene light and the image light overlap with the right eye, and visually recognizes the observed image of only the outdoor scene light with the left eye. Although the observed images on the left and right are different, the observed images on the left and right are synthesized in the brain and recognized as an image without a sense of incongruity in which the outdoor scene light and the image light overlap.

[0014] The wearable display device 3 includes an image display unit 30 that displays image light while transmitting outdoor scene light, a first support member 31 that supports the first barrel 20R of the binoculars 2, a second support member 32 that supports the second barrel 20L of the binoculars 2, a third support member 33 that supports the image display unit 30, and a main body member 34.

[0015] The main body member 34 detachably attaches the first support member 31, the second support member 32, and the third support member 33. The main body member 34 includes, for example, a base portion 343 made of a plate-shaped member formed of metal or plastic, a moving mechanism 340 provided on the base portion 343, a holding mechanism 350 provided on the base portion 343, a positioning member 345, and a position fixing portion 346.

[0016] The moving mechanism 340 enables the third support member 33 to move in the left-right direction X (the first direction) in which the first support member 31 and the second support member 32 are arranged. The moving mechanism 340 of the present embodiment is constituted by a guide groove 340a extending along the long side of the base portion 343, and holds the third support member 33 so as to be movable in the left-right direction X. In the left-right direction X, the guide groove 340a is formed so as to penetrate both end faces of the base portion 343. For this reason, the third support member 33 is detachable from both end faces of the base portion 343 via the guide groove 340a. The configuration of the third support member 33 will be described later.

[0017] The holding mechanism 350 holds the first support member 31 in a state where it is relatively movable with respect to the second support member 32 in the left-right direction X. The holding mechanism 350 includes a first holding portion 341 and a second holding portion 342.

[0018] The first holding portion 341 includes a holding piece 341a that detachably holds the first support member 31, which will be described later, and a first attachment groove 341b formed in the base portion 343 for attaching the holding piece 341a. The first attachment groove 341b is provided on the rear side (-Y) and the right side (-X) in the front-rear direction Y with respect to the guide groove 340a, and extends along the long side direction of the base portion 343. In the left-right direction X, the first attachment groove 341b is provided so as to penetrate the right end face 343a, which is the side face on the right side (-X) of the base portion 343. For this reason, the first holding portion 341 (holding piece 341a) is detachable from the right end face of the base portion 343 via the first attachment groove 341b. Based on such a configuration, the first holding portion 341 is movable in the long side direction (left-right direction X) of the base portion 343.

[0019] On the other hand, the second holding part 342 includes a second locking part 342a that detachably holds the second support member 32 described later. The second holding part 342 is provided on the rear side (-Y) and the left side (+X) in the front-rear direction Y with respect to the guide groove 340a. The second locking part 342a of the second holding part 342 is provided so as to be paired with the holding piece 341a of the first holding part 341. Specifically, the second locking part 342a of the second holding part 342 and the holding piece 341a of the first holding part 341 are arranged so as to be linearly aligned in the left-right direction X. Thus, unlike the first holding part 341, the second holding part 342 is configured not to be movable on the base part 343.

[0020] The holding mechanism 350 holds the first support member 31 and the second support member 32 on the main body member 34 in a state where the relative positions of the first support member 31 and the second support member 32 can be changed by the first support member 31 moving in the left-right direction X with respect to the second support member 32. That is, the holding mechanism 350 holds the first support member 31 in a state where it can be relatively moved with respect to the second support member 32 in the left-right direction X.

[0021] The first support member 31 is a cylindrical member that supports the outer peripheral surface 20R1 on the objective lens 23R side of the first lens barrel 20R. The first support member 31 is attached to the first lens barrel 20R so that the center 31C of the first support member 31 coincides with the optical axis PR of the right-eye lens group 22R. The first support member 31 supports the outer peripheral surface 20R1 of the first lens barrel 20R via a bearing member 31a disposed on the inner peripheral surface side. Therefore, the first lens barrel 20R is supported by the first support member 31 in a rotatable state.

[0022] The first support member 31 has a convex part 310 that is locked by fitting into the first locking part 341a1 of the holding piece 341a of the first holding part 341. The first locking part 341a1 has a structure with an opening on the rear side (-Y) in the front-rear direction Y. For this reason, the first support member 31 is held on the main body member 34 in a state where it can move along the left-right direction X together with the holding piece 341a by sliding the convex part 310 from the rear side (-Y) to the front side (+Y) and fitting it into the first locking part 341a1 of the holding piece 341a.

[0023] The second support member 32 is a cylindrical member that supports the outer peripheral surface on the objective lens 23L side of the second lens barrel 20L. The second support member 32 is attached to the second lens barrel 20L so that the center 32C of the second support member 32 coincides with the optical axis PL of the left-eye lens group 22L. The second support member 32 supports the outer peripheral surface 20L1 of the second lens barrel 20L via a bearing member 32a disposed on the inner peripheral surface side. For this reason, the second lens barrel 20L is supported by the second support member 32 in a rotatable state.

[0024] The second support member 32 has a convex portion 320 that is locked by fitting into the second locking portion 342a of the second holding portion 342. The second locking portion 342a has a structure that opens to the rear side (-Y) in the front-rear direction Y. For this reason, the second support member 32 is held by the main body member 34 by sliding the convex portion 320 into the second locking portion 342a from the rear side (-Y) to the front side (+Y).

[0025] In this way, the binoculars 2 of the present embodiment are attached to the main body member 34 via the first support member 31 and the second support member 32. Note that the binoculars 2 may be attached to the first support member 31 and the second support member 32 attached to the main body member 34, or the first support member 31 and the second support member 32 attached to each lens barrel of the binoculars 2 may be attached to the main body member 34.

[0026] The third support member 33 has a convex portion 330 that fits into a guide groove 340a constituting the moving mechanism 340, and is movable in the long side direction (left-right direction X) of the base portion 343. For this reason, the wearable display device 3 of the present embodiment can switch between a state in which the third support member 33 is disposed in front of the objective lens 23R of the first lens barrel 20R and a state in which the third support member 33 is retracted from in front of the objective lens 23R of the first lens barrel 20R by moving the third support member 33 in the left-right direction X by the moving mechanism 340.

[0027] FIG. 2 is a front view of the wearable display device 3 viewed from the front side. As shown in FIG. 2, in the wearable display device 3 of the present embodiment, when viewed in a plan view in the front-rear direction Y (second direction) intersecting the left-right direction X, the moving mechanism 340 moves the third support member 33 to a first position where the objective lens 23R housed in the first lens barrel 20R and the image display unit 30 overlap, and a second position where the objective lens 23R and the image display unit 30 do not overlap.

[0028] Note that the moving mechanism 340 is not limited to the guide groove 340a as long as it has a configuration capable of movably holding the third support member 33. For example, a linear guide using a carriage that moves along a rail may be used as the moving mechanism. When using a linear guide, a carriage fixing the third support member 33 may be moved along the rail.

[0029] The wearable display device 3 of the present embodiment includes a positioning member 345 that positions the third support member 33 at the first position P1, thereby improving the positional accuracy between the objective lens 23R and the image display unit 30 at the first position P1. The positioning member 345 positions the third support member 33 at the first position P1 in the left-right direction X. When the image display unit 30 moves to the first position P1, the positioning member 345 contacts the third support member 33 to restrict the movement of the third support member 33. Thereby, the optical axis PR of the right-eye lens group 22R (objective lens 23R) housed in the first lens barrel 20R supported by the first support member 31 and the deflection member 303 of the image display unit 30 supported by the third support member 33 can be easily and highly accurately aligned.

[0030] The wearable display device 3 of the present embodiment includes a position fixing portion 346 that fixes the third support member 33 to the first position P1 in the left - right direction X. The position fixing portion 346 of the present embodiment is composed of, for example, a fixing portion 346a formed on the third support member 33 and a screw member 346b inserted through the fixing portion 346a. By fixing the screw member 346b to the main body member 34, the third support member 33 is fixed to the main body member 34. Thereby, the wearable display device 3 of the present embodiment can be arranged with the image display portion 30 fixed at the first position P1, so that the displacement between the objective lens 23R and the image display portion 30 can be prevented. Therefore, the wearable display device 3 of the present embodiment can stably hold the state in which the objective lens 23R and the image display portion 30 are accurately aligned, so that the user M can visually recognize an image in which the image light GL and the external scene light OL are accurately overlapped.

[0031] Here, the configuration of the image display portion 30 will be described. FIG. 3 is a diagram showing a cross - sectional configuration of the optical display unit 100 in the state of the first position P1. As shown in FIG. 3, the image display portion 30 includes a housing 300 for the display element, a display element 301 that emits image light GL, a projection optical system 302, and a deflection member 303 that deflects the image light GL emitted from the display element 301.

[0032] The display element 301 is composed of, for example, a top - emission type organic EL panel. Thereby, the display element 301 can emit full - color image light GL. The projection optical system 302 is composed of, for example, a convex lens, and parallelizes the image light GL emitted from the display element 301 and makes it incident on the deflection member 303.

[0033] The deflection member 303 is arranged at an angle of 45° with respect to the principal ray of the image light GL. The deflection member 303 of the present embodiment is constituted by, for example, a half mirror. Therefore, the deflection member 303 reflects a part of the image light GL, that is, deflects a part of the image light GL and transmits the remaining part of a part of the image light GL. The image light GL transmitted through the deflection member 303 is blocked by a light shielding member (not shown) provided in the display element housing 300.

[0034] When the deflection member 303 is arranged at the first position P1 where the objective lens 23R and the image display unit 30 overlap, the deflection member 303 is arranged at a position overlapping with the optical axis PR of the right-eye lens group 22R housed in the first lens barrel 20R. That is, the image light GL deflected by the deflection member 303 and emitted from the second opening 300b of the display element housing 300 can efficiently enter the right-eye lens group 22R.

[0035] Since the deflection member 303 has light transmissivity, the external scene light OL can pass through the deflection member 303. In the optical display unit 100 of the present embodiment, even when the image display unit 30 is located at the first position P1 where it overlaps with the objective lens 23R, see-through vision of the outside world is possible, and the user M can visually recognize an image in which the image light GL is superimposed on the external scene light OL.

[0036] The display element housing 300 houses the display element 301, the projection optical system 302, and the deflection member 303 inside. The display element housing 300 is supported by the third support member 33. The display element housing 300 is provided with a first opening 300a for making the external scene light OL enter the deflection member 303, and a second opening 300b for injecting the external scene light OL that has entered from the first opening 300a, passed through the deflection member 303, and the image light GL deflected by the deflection member 303 to the outside.

[0037] On the other hand, in the optical display unit 100 of the present embodiment, there may be a case where the external scene is visually recognized without injecting the image light GL from the display element 301. When only the external scene is visually recognized in this way, if the image display unit 30 is arranged on the light incident side of the objective lens 23R, the brightness of the external scene light OL visually recognized by the user M of the binoculars 2 decreases by the amount transmitted through the deflection member 303.

[0038] In contrast, in the wearable display device 3 of the present embodiment, as shown in FIG. 2, the third support member 33 can be moved to a second position P2 where the objective lens 23R and the image display unit 30 do not overlap in the front-rear direction Y by the moving mechanism 340. In the case of the present embodiment, the third support member 33 at the second position P2 is located between the first support member 31 and the second support member 32 when viewed in a plan view in the front-rear direction Y. According to this configuration, the movement between the second position P2 and the first position P1 of the third support member 33 becomes easy.

[0039] In the case of the present embodiment, since the guide groove 340a constituting the moving mechanism 340 is formed so as to penetrate both end faces of the base portion 343, the third support member 33 may be completely removed from the guide groove 340a. In the state where the third support member 33 is removed from the guide groove 340a in this way, since the objective lens 23R and the image display unit 30 do not overlap in the front-rear direction Y, it corresponds to the second position in the present invention.

[0040] Further, when an increase in the size of the main body member 34 in the left-right direction X can be tolerated, the guide groove 340a may be extended to at least one of the outside of the first lens barrel 20R and the second lens barrel 20L of the binoculars 2, and the extended guide groove 340a may be used as a retraction space for the third support member 33, that is, the second position of the third support member 33.

[0041] The optical display unit 100 of the present embodiment can allow the user M to visually recognize the external scene light directly incident on the objective lens 23R without passing through the deflection member 303 of the image display unit 30 by positioning the image display unit 30 at the second position P2. Therefore, the user M of the binoculars 2 can visually recognize bright external scene light.

[0042] Similar to a general binocular, the binocular 2 of this embodiment can adjust the distance between the optical axes PR and PL according to the eye width of the user M. For example, the user M can bring the optical axes PR and PL of the binocular 2 closer to each other, that is, narrow the eye width, by rotating the first lens barrel 20R and the second lens barrel 20L around the central axis of the connecting portion 21 to one side. On the other hand, the user M can separate the optical axes PR and PL of the binocular 2 from each other, that is, widen the eye width, by rotating the first lens barrel 20R and the second lens barrel 20L around the central axis of the connecting portion 21 to the other side.

[0043] Therefore, in the optical display unit 100 of this embodiment, it may be possible to adjust the eye width of the binocular 2 while the wearable display device 3 is attached. In the wearable display device 3 of this embodiment, since the holding mechanism 350 makes the first support member 31 movable relative to the second support member 32 in the left-right direction X, the eye width of the binocular 2 can be adjusted while the wearable display device 3 is attached as described later. Further, in the wearable display device 3 of this embodiment, since the first lens barrel 20R and the second lens barrel 20L can be respectively supported in a rotatable state by the first support member 31 and the second support member 32, the eye width of the binocular 2 can be adjusted while the wearable display device 3 is attached as described later.

[0044] Hereinafter, the case of adjusting the eye width of the binocular 2 while the wearable display device 3 is attached will be described. FIG. 4 is a diagram schematically illustrating the operations of the respective members when adjusting the eye width of the binocular 2 in the optical display unit 100. FIG. 4 is a front view seen from the front side along the optical axes PR and PL of the binocular 2. In FIG. 4, for ease of viewing, the state where the third support member 33 is at the second position P2 is illustrated.

[0045] First, the case of narrowing the eye width of the binocular 2 as shown in the upper part of FIG. 4 will be described. When narrowing the eye width of the binoculars 2, it is necessary to reduce the distance between the optical axes PR and PL of the binoculars 2 in the left-right direction X. In order to reduce the distance between the optical axes PR and PL of the binoculars 2, it is necessary to rotate the first lens barrel 20R and the second lens barrel 20L around the central axis of the connecting portion 21 as described above to bring their distances closer to each other.

[0046] Here, when the first lens barrel 20R and the second lens barrel 20L are fixed to the first support member 31 and the second support member 32, the first lens barrel 20R and the second lens barrel 20L can only slide together with the first support member 31 and the second support member 32. That is, it becomes impossible to rotate the first lens barrel 20R and the second lens barrel 20L around the central axis of the connecting portion 21.

[0047] On the other hand, in the wearable display device 3 of the present embodiment, since the first lens barrel 20R and the second lens barrel 20L are supported by the first support member 31 and the second support member 32 in a rotatable state respectively, the rotational movements of the first lens barrel 20R and the second lens barrel 20L and the sliding movements of the first support member 31 and the second support member 32 can be made independent.

[0048] When the distance between the optical axes PR and PL of the binoculars 2 becomes smaller, the objective lens 23R rotates together with the first lens barrel 20R in the first rotation direction R1 (counterclockwise direction) around the optical axis PR (rotation axis) along the front-rear direction Y, and the objective lens 23L rotates together with the second lens barrel 20L in the second rotation direction R2 (clockwise direction) around the optical axis PL along the front-rear direction Y. At this time, the holding mechanism 350 moves only the first holding portion 341 that supports the first support member 31 to the left side (+X) which is one side in the left-right direction X, so as to bring the first support member 31 closer to the second support member 32 and reduce the distance between the optical axes PR and PL. Since the third support member 33 is arranged at the second position P2, it does not interfere with the movement of the first support member 31.

[0049] Subsequently, as shown in the lower part of FIG. 4, the case of widening the eye width of the binoculars 2 will be described. When widening the eye width of the binoculars 2, it is necessary to rotate the first lens barrel 20R and the second lens barrel 20L around the central axis of the connecting portion 21 to increase the distance between them and increase the distance between the optical axes PR and PL of the binoculars 2 in the left-right direction X.

[0050] When the distance between the optical axes PR and PL of the binoculars 2 increases, the objective lens 23R rotates in the second rotation direction R2 (clockwise direction) around the optical axis PR along the front-rear direction Y together with the first lens barrel 20R, and the objective lens 23L rotates in the first rotation direction R1 around the optical axis PL along the front-rear direction Y together with the second lens barrel 20L. At this time, the holding mechanism 350 moves only the first support member 31 to the right side (-X) which is the other side in the left-right direction X to separate the first support member 31 from the second support member 32 and increase the distance between the optical axes PR and PL. Since the third support member 33 is arranged at the second position P2, it does not prevent the movement of the first support member 31.

[0051] The wearable display device 3 of the present embodiment has a structure in which the third support member 33 that supports the image display unit 30 is not fixed to the first lens barrel 20R of the binoculars 2. Therefore, as shown in FIG. 4, even when the first lens barrel 20R rotates to change the distance between the optical axes PR and PL of the binoculars 2, the image display unit 30 does not rotate together with the first lens barrel 20R.

[0052] On the other hand, as a comparative example, in a structure where the image display unit is fixed to the first lens barrel of the binoculars, the image display unit rotates together with the first lens barrel, so the emission direction of the image light from the image display unit changes. When the emission direction of the image light from the image display unit changes in this way, the direction of the image light viewed by the user M of the binoculars also changes.

[0053] In contrast, in the case of the wearable display device 3 of the present embodiment, since the image display unit 30 does not rotate, the emission direction of the image light GL from the image display unit 30 when the first support member 31 moves to the right side (-X) in the left-right direction X is the same as the emission direction of the image light GL from the image display unit 30 when the first support member 31 moves to the left side (+X) in the left-right direction X. That is, according to the optical display unit 100 of the present embodiment, even when adjusting the interpupillary distance in the binoculars 2 while the wearable display device 3 is attached, the emission direction of the image light GL from the image display unit 30 does not change. Therefore, before and after the interpupillary distance adjustment, the user M can visually recognize the image light GL emitted in a predetermined direction.

[0054] As described above, the wearable display device 3 of the present embodiment is a wearable display device attached to the binoculars 2 having a first lens barrel 20R that houses the objective lens 23R and the eyepiece lens 24R, and a second lens barrel 20L that houses the objective lens 23L and the eyepiece lens 24L. The wearable display device 3 includes an image display unit 30 that displays the image light GL while transmitting the external scene light OL, a first support member 31 that supports the first lens barrel 20R, a second support member 32 that supports the second lens barrel 20L, a third support member 33 that supports the image display unit 30, and a main body member 34 to which the first support member 31, the second support member 32, and the third support member 33 are detachably attached. The main body member 34 has a moving mechanism 340 that enables the third support member 33 to move in the left-right direction X in which the first support member 31 and the second support member 32 are arranged. When viewed in a plan view in the front-rear direction Y that intersects the left-right direction X, the moving mechanism 340 moves the third support member 33 to a first position P1 where the objective lens 23R and the image display unit 30 overlap, and a second position P2 where the objective lens 23R and the image display unit 30 do not overlap.

[0055] According to the wearable display device 3 of the present embodiment, by moving the third support member 33 by the moving mechanism 340, it is possible to easily switch between a first position P1 where the objective lens 23R and the image display unit 30 overlap and a second position P2 where the objective lens 23R and the image display unit 30 do not overlap. Therefore, when observing only the external scene in the binoculars 2, by moving the third support member 33 to the second position P2, the deflection member 303 is not arranged on the optical axis PR of the right-eye lens group 22R, so that the light of the external scene emitted from the eyepiece lens 24R can be directly incident on the eye of the user M. Thus, the wearable display device 3 of the present embodiment can allow the user M of the binoculars 2 to visually recognize a bright external scene.

[0056] The optical display unit 100 of the present embodiment includes a binocular 2 having a first barrel 20R that houses an objective lens 23R and an eyepiece lens 24R, and a second barrel 20L that houses an objective lens 23L and an eyepiece lens 24L, and the wearable display device 3.

[0057] According to the optical display unit 100 of the present embodiment, it is possible to easily switch between a state in which the user M of the binocular 2 visually recognizes the image light GL and the external scene light OL with the eyes, and a state in which only the bright external scene light OL is visually recognized with the eyes of the user M of the binocular 2. Therefore, it is possible to suppress a decrease in brightness when only the external scene light is visually recognized in the binocular 2, and to provide a display unit with a high added value that allows easy visual recognition of the light obtained by superimposing the external scene light OL and the image light GL.

[0058] (Second Embodiment) Subsequently, the configuration of the optical display unit according to the second embodiment of the present invention will be described. The difference between this embodiment and the first embodiment lies in the structure of the wearable display device. For this reason, hereinafter, the same reference numerals will be given to the configurations or members common to the first embodiment, and the detailed description thereof will be omitted.

[0059] FIG. 5 is an exploded perspective view showing a schematic configuration of the optical display unit 102 of the present embodiment. As shown in FIG. 5, the optical display unit 102 of the present embodiment includes a binocular 2 and a wearable display device 4.

[0060] The wearable display device 4 includes an image display unit 30, a first support member 31, a second support member 32, a third support member 33, and a main body member 44. The main body member 44 has a base portion 343, a moving mechanism 340, a positioning member 345, and a position fixing portion 346.

[0061] The moving mechanism 340 of the present embodiment holds the support members 31, 32, and 33 so as to be movable in the left-right direction X. The wearable display device 4 of the present embodiment is different from the configuration of the first embodiment in that the support members 31, 32, and 33 move along the guide groove 340a that constitutes the moving mechanism 340.

[0062] The moving mechanism 340 of the present embodiment holds the first support member 31 and the second support member 32 in a relatively movable state in the left - right direction X. That is, the moving mechanism 340 of the present embodiment also functions as the holding mechanism 350 of the first embodiment.

[0063] The first support member 31 has a convex portion 311 that fits into a guide groove 340a constituting the moving mechanism 340. The first support member 31 is movable along the left - right direction X by the convex portion 311 sliding along the guide groove 340a.

[0064] The second support member 32 has a convex portion 321 that fits into a guide groove 340a constituting the moving mechanism 340. The second support member 32 is movable along the left - right direction X by the convex portion 321 sliding along the guide groove 340a.

[0065] The third support member 33 has a convex portion 331 that fits into a guide groove 340a constituting the moving mechanism 340. In the present embodiment, since the third support member 33 moves along the guide groove 340a together with the first support member 31 and the second support member 32, the support position of the image display unit 30 is shifted to the front side (+Y) compared to the configuration of the first embodiment. Thereby, contact and interference between the first support member 31 and the second support member 32 and the image display unit 30 can be prevented.

[0066] Note that the moving mechanism 340 is not limited to the guide groove 340a as long as it has a configuration capable of movably holding each of the support members 31, 32, and 33. For example, a linear guide using a carriage that moves along a rail may be used as the moving mechanism. When using a linear guide, a carriage to which each of the support members 31, 32, and 33 is fixed may be moved along the rail.

[0067] Since the optical display unit 102 of the present embodiment makes the positions of the first support member 31 and the second support member 32 relatively movable in the left - right direction X by the moving mechanism 340, the eye width of the binoculars 2 can be adjusted while the wearable display device 4 is attached.

[0068] Next, the case of adjusting the eye width in the binoculars 2 while the mounted display device 4 is attached will be described. FIG. 6 is a diagram schematically illustrating the operations of the respective members when adjusting the eye width of the binoculars 2 in the optical display unit 102. FIG. 6 is a front view seen from the front side along the optical axes PR and PL of the binoculars 2. In FIG. 6, for ease of viewing, the state where the third support member 33 is in the second position P2 is illustrated.

[0069] As shown in the upper part of FIG. 6, when narrowing the eye width of the binoculars 2 in the optical display unit 102 of the present embodiment, the objective lens 23R is rotated in the first rotation direction R1 together with the first lens barrel 20R, and the objective lens 23L is rotated in the second rotation direction R2 together with the second lens barrel 20L. At this time, the moving mechanism 340 moves the first support member 31 to the left side (+X) which is one side in the left-right direction X, and moves the second support member 32 to the right side (-X) which is the other side in the left-right direction X, thereby bringing the first support member 31 closer to the second support member 32 and reducing the distance between the optical axes PR and PL. Since the third support member 33 is disposed at the second position P2, it does not interfere with the movement of the first support member 31 and the second support member 32.

[0070] As shown in the lower part of FIG. 6, when widening the eye width of the binoculars 2 in the optical display unit 102 of the present embodiment, the objective lens 23R is rotated in the second rotation direction R2 together with the first lens barrel 20R, and the objective lens 23L is rotated in the first rotation direction R1 together with the second lens barrel 20L. At this time, the moving mechanism 340 moves the first support member 31 to the right side (-X) which is the other side in the left-right direction X, and moves the second support member 32 to the left side (+X) which is one side in the left-right direction X, thereby bringing the first support member 31 closer to the second support member 32 and increasing the distance between the optical axes PR and PL. Since the third support member 33 is disposed at the second position P2, it does not interfere with the movement of the first support member 31 and the second support member 32.

[0071] In the case of the wearable display device 4 of the present embodiment, when the first support member 31 moves to the right side (-X) in the left-right direction X, the emission direction of the image light GL from the image display unit 30 is the same as the emission direction of the image light GL from the image display unit 30 when the first support member 31 moves to the left side (+X) in the left-right direction X, and the emission direction of the image light GL from the image display unit 30 when the second support member 32 moves to the right side (-X) in the left-right direction X is the same as the emission direction of the image light GL from the image display unit 30 when the second support member 32 moves to the left side (+X) in the left-right direction X.

[0072] That is, according to the optical display unit 102 of the present embodiment, even when adjusting the interpupillary distance in the binoculars 2 with the wearable display device 4 attached, the emission direction of the image light GL from the image display unit 30 does not change. Therefore, before and after the interpupillary distance adjustment, the user M can visually recognize the image light GL emitted in a predetermined direction.

[0073] According to the wearable display device 4 of the present embodiment, similar to the wearable display device 3 of the embodiment, the user M of the binoculars 2 can visually recognize a bright outdoor scene. Further, since the moving mechanism 340 of the wearable display device 4 of the present embodiment also serves as the function of the holding mechanism 350, a configuration in which each support member 31, 32, 33 is moved by one guide groove 340a can be realized. Therefore, since there is no need for a space for providing the holding mechanism 350, the main body member 34 can be downsized.

[0074] According to the optical display unit 102 of the present embodiment, it is possible to provide a small-sized display unit with a high added value that suppresses a decrease in brightness when only outdoor light is visually recognized in the binoculars 2 and enables easy visual recognition of light obtained by superimposing the outdoor light OL and the image light GL.

[0075] (Modification example) Subsequently, a modification example of the optical display unit will be described. The binoculars of this modification example are different from the binoculars 2 of the first embodiment in that the first barrel and the second barrel are separated. FIG. 7 is a diagram showing a cross-sectional configuration of the optical display unit 103 according to a modified example. Hereinafter, the same reference numerals are given to the configurations or members common to the first embodiment, and the detailed description thereof will be omitted.

[0076] As shown in FIG. 7, the optical display unit 103 of this modified example includes binoculars 2A and a wearable display device 3A. The binoculars 2A have a pair of left and right first lens barrels 20R and second lens barrels 20L. The wearable display device 3A is used in a state of being attached to the binoculars 2A.

[0077] The wearable display device 3A is different from the configuration of the wearable display device 3 of the first embodiment in that it includes a connecting member 35 that connects the first support member 31 and the second support member 32. The connecting member 35 of this modified example is a member using a pantograph mechanism composed of a plurality of links and is expandable and contractible in the left-right direction X. Therefore, the connecting member 35 can adjust the distance between the first support member 31 and the second support member 32 in the left-right direction X.

[0078] According to the wearable display device 3A of this modified example, since the first support member 31 and the second support member 32 can be connected so as to be movable in the left-right direction X by the connecting member 35, the first lens barrel 20R and the second lens barrel 20L can be connected. Therefore, according to the optical display unit 103 of this modified example, the connecting member 35 of the wearable display device 3A can be also used as a connecting member that connects the first lens barrel 20R and the second lens barrel 20L of the binoculars 2A, so that the number of parts can be reduced to realize miniaturization and weight reduction of the device configuration.

[0079] Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. In addition, the specific configurations such as the number, arrangement, shape, and material of various components constituting the light source device are not limited to the above-described embodiments and can be appropriately changed.

[0080] In each of the above embodiments, the binoculars of the Porro prism type have been described as an example, but the present invention can also be applied to binoculars of the Porro prism type or the Galileo type.

[0081] In each of the above embodiments, the case where the wearable display device can be attached to the first barrel 20R for the right eye of the binoculars has been described as an example, but the present invention is also applicable to the case of attaching it to the second barrel 20L for the left eye.

[0082] In the above embodiment, the case where an organic EL panel is used as the display element 301 of the image display unit 30 has been described as an example, but the display element 301 is not limited to an organic EL panel, and a self-luminous panel such as an inorganic EL panel or a micro LED panel may be used. Further, a liquid crystal display panel may be used.

[0083] In each of the above embodiments, the case where a half mirror is used as the deflection member 303 that reflects the image light GL emitted from the display element 301 has been described as an example, but a reflective diffraction element may be used.

[0084] Hereinafter, a summary of the present disclosure is appended.

[0085] (Appended Note 1) A wearable display device attached to binoculars having a first barrel that houses a first objective lens and a first eyepiece lens, and a second barrel that houses a second objective lens and a second eyepiece lens, An image display unit that displays image light while transmitting external scene light, A first support member that supports the first barrel, A second support member that supports the second barrel, A third support member that supports the image display unit, Comprising a main body member to which the first support member, the second support member, and the third support member are detachably attached, The main body member has a moving mechanism that enables at least the third support member to move in a first direction in which the first support member and the second support member are arranged. When viewed in a plan view in a second direction intersecting the first direction, the moving mechanism moves the third support member to a first position where the first objective lens and the image display unit overlap, and a second position where the first objective lens and the image display unit do not overlap. The wearable display device characterized by the above.

[0086] According to the wearable display device having this configuration, by moving the third support member by the moving mechanism, it is possible to easily switch between a first position where the first objective lens and the image display unit overlap and a second position where the first objective lens and the image display unit do not overlap. For this reason, when observing only the outdoor scene in binoculars, by moving the third support member to the second position, since the image display unit is not arranged on the optical axis of the first objective lens, the light of the outdoor scene emitted from the first eyepiece lens can be directly incident on the user's eye. Therefore, the wearable display device having this configuration can allow the user of the binoculars to visually recognize a bright outdoor scene.

[0087] (Appendix 2) The main body member further has a holding mechanism that holds the first support member and the second support member in a relatively movable state in the first direction. The holding mechanism When the first objective lens rotates in a first rotation direction around a rotation axis along the second direction, the first support member is moved to one side in the first direction. When the first objective lens rotates in a second rotation direction opposite to the first rotation direction, the first support member is moved to the other side in the first direction. The wearable display device according to Appendix 1, characterized by the above.

[0088] According to this configuration, it is possible to perform eye width adjustment in binoculars by rotating the first lens barrel and the second lens barrel while the wearable display device is attached.

[0089] (Appendix 3) When the first support member moves to one side in the first direction, the emission direction of the image light from the image display unit is equal to the emission direction of the image light from the image display unit when the first support member moves to the other side in the first direction. The wearable display device according to supplementary note 2, characterized in that.

[0090] According to this configuration, even when adjusting the interpupillary distance in binoculars with the wearable display device attached, the emission direction of the image light from the image display unit does not change. Therefore, before and after the interpupillary distance adjustment, the user can visually recognize the image light emitted in a predetermined direction.

[0091] (Supplementary note 4) The moving mechanism also serves as the holding mechanism. The wearable display device according to supplementary note 3, characterized in that.

[0092] According to this configuration, a configuration for moving the three support members by the moving mechanism can be realized, so that the space for providing the holding mechanism is not required, and the device configuration can be miniaturized.

[0093] (Supplementary note 5) The moving mechanism is When the second objective lens rotates in the first rotation direction, the second support member is moved to the other side in the first direction. When the second objective lens rotates in the second rotation direction, the second support member is moved to one side in the first direction. The wearable display device according to supplementary note 4, characterized in that.

[0094] According to this configuration, the interpupillary distance in binoculars can be adjusted by rotating the first barrel and the second barrel with the wearable display device attached.

[0095] (Supplementary note 6) When the second support member moves to one side in the first direction, the emission direction of the image light from the image display unit is equal to the emission direction of the image light from the image display unit when the second support member moves to the other side in the first direction. The wearable display device according to appended claim 5, characterized in that.

[0096] According to this configuration, even when adjusting the interpupillary distance in binoculars while the wearable display device is attached, since the emission direction of the image light from the image display unit does not change, the user can visually recognize the image light emitted in a predetermined direction before and after the interpupillary distance adjustment.

[0097] (Appended claim 7) When the third support member at the second position is viewed in plan view in the second direction, it is located between the first support member and the second support member. The wearable display device according to any one of appended claims 1 to 6, characterized in that.

[0098] According to this configuration, the movement of the third support member between the second position and the first position becomes easy.

[0099] (Appended claim 8) The main body member has a positioning member that positions the third support member at the first position in the first direction. The wearable display device according to any one of appended claims 1 to 7, characterized in that.

[0100] According to this configuration, the positional accuracy between the first objective lens and the image display unit at the first position can be improved.

[0101] (Appended claim 9) The main body member further has a position fixing portion that fixes the third support member at the first position in the first direction. The wearable display device according to appended claim 8, characterized in that.

[0102] According to this configuration, since the image display unit can be arranged in a fixed state at the first position, displacement between the first objective lens and the image display unit can be prevented.

[0103] (Appendix 10) The apparatus further includes a connecting member that connects the first support member and the second support member and enables adjustment of the distance between the first support member and the second support member in the first direction. The wearable display device according to any one of Appendices 1 to 9, characterized in that.

[0104] According to this configuration, since the connecting member can also be used as a member for connecting the first barrel and the second barrel of the binoculars, miniaturization and weight reduction of the device configuration can be achieved by reducing the number of parts.

[0105] (Appendix 11) A binoculars having a first barrel that houses a first objective lens and a first eyepiece lens, and a second barrel that houses a second objective lens and a second eyepiece lens, The wearable display device according to any one of Appendices 1 to 10, and. An optical display unit, characterized in that.

[0106] According to the optical display unit of this configuration, it is possible to easily switch between a state in which the user's eyes of the binoculars visually recognize image light and outdoor scene light, and a state in which the user's eyes of the binoculars visually recognize only bright outdoor scene light. Therefore, it is possible to provide a display unit with high added value that suppresses a decrease in brightness when visually recognizing only outdoor scene light in the binoculars and enables easy visual recognition of light obtained by superimposing outdoor scene light and image light.

Explanation of Signs

[0107] 2, 2A... binoculars, 3, 3A, 4... wearable display device, 20L... second lens barrel, 20R... lens barrel, 20R... first lens barrel, 21... connecting part, 23L... objective lens (second objective lens), 23R... objective lens (first objective lens), 24L... eyepiece lens (second eyepiece lens), 24R... eyepiece lens (first eyepiece lens), 30... image display part, 31... first support member, 32... second support member, 33... third support member, 34, 44... main body member, 35... connecting member, 100, 102, 103... optical display unit, 340... moving mechanism, 345... positioning member, 346... position fixing part, 350... holding mechanism, GL... image light, OL... outdoor scene light, P1... first position, P2... second position, R1... first rotation direction, R2... second rotation direction.

Claims

1. A wearable display device attached to a binoculars having a first lens barrel that houses a first objective lens and a first eyepiece lens, and a second lens barrel that houses a second objective lens and a second eyepiece lens, an image display unit that displays image light while transmitting external light, a first support member that supports the first lens barrel, a second support member that supports the second lens barrel, a third support member that supports the image display unit, and a main body member to which the first support member, the second support member, and the third support member are detachably attached, wherein the main body member has a moving mechanism that enables at least the third support member to move in a first direction in which the first support member and the second support member are arranged side by side, and when viewed in a plan view in a second direction intersecting the first direction, the moving mechanism moves the third support member to a first position where the first objective lens and the image display unit overlap, and a second position where the first objective lens and the image display unit do not overlap. A wearable display device characterized by the above.

2. The main body member further has a holding mechanism that holds the first support member in a state where it can move relative to the second support member in the first direction, and the holding mechanism moves the first support member to one side in the first direction when the first objective lens rotates in a first rotation direction around a rotation axis along the second direction, and moves the first support member to the other side in the first direction when the first objective lens rotates in a second rotation direction opposite to the first rotation direction. The wearable display device according to claim 1, characterized by the above.

3. The emission direction of the image light from the image display unit when the first support member moves to one side in the first direction is equal to the emission direction of the image light from the image display unit when the first support member moves to the other side in the first direction. The wearable display device according to claim 2, characterized by the above.

4. The moving mechanism also serves as the holding mechanism. The wearable display device according to claim 3, characterized by the above.

5. The moving mechanism moves the second support member to the other side in the first direction when the second objective lens rotates in the first rotation direction, and moves the second support member to one side in the first direction when the second objective lens rotates in the second rotation direction. The wearable display device according to claim 4, characterized by the above.

6. When the second support member moves to one side in the first direction, the emission direction of the image light from the image display unit is equal to the emission direction of the image light from the image display unit when the second support member moves to the other side in the first direction. The wearable display device according to claim 5, characterized in that.

7. When viewed in a plan view in the second direction, the third support member at the second position is located between the first support member and the second support member. The wearable display device according to any one of claims 1 to 6, characterized in that.

8. The main body member has a positioning member that positions the third support member at the first position in the first direction. The wearable display device according to any one of claims 1 to 6, characterized in that.

9. The main body member further has a position fixing portion that fixes the third support member at the first position in the first direction. The wearable display device according to claim 8, characterized in that.

10. The first support member and the second support member are connected, and a connecting member is further provided that can adjust the distance between the first support member and the second support member in the first direction. The wearable display device according to any one of claims 1 to 6, characterized in that.

11. A binoculars having a first lens barrel that houses a first objective lens and a first eyepiece lens, and a second lens barrel that houses a second objective lens and a second eyepiece lens. The wearable display device according to any one of claims 1 to 6, and. An optical display unit, characterized in that.

Images