WO2019008721A1

WO2019008721A1 - Wearable display device

Info

Publication number: WO2019008721A1
Application number: PCT/JP2017/024790
Authority: WO
Inventors: 成示龍田
Original assignee: オリンパス株式会社
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2019-01-10

Abstract

This wearable display device 100 comprises: a display unit 160 for displaying an image; an ocular optical unit 140 disposed in front of a user's eye and presenting the user with a magnified image of the image displayed on the display unit 160; and an adjustment unit 180 capable of adjusting the position and the direction of an ocular optical axis AX of the ocular optical unit 140, wherein, when the ocular optical axis AX does not pass through the vicinity of the center of the user's eyeball, the display unit 160 displays a guide image including display information that indicates operation content for ensuring that the ocular optical axis AX passes through the vicinity of the center of the user's eyeball.

Description

Wearable display device

The present invention relates to a wearable display device and the like.

2. Description of the Related Art Wearable display devices (head mounted displays) that are worn on the head of a user and project an image onto the user's field of view have been known. The head mounted display is generally configured to observe a magnified virtual image through an eyepiece optical unit disposed in front of the eye, and in this case, in order to allow the user to appropriately view the display screen It is necessary to adjust the eyepiece optics (eyepiece window) to the correct position and orientation with respect to the eye of the user. Specifically, it is necessary to adjust the position and the direction of the eyepiece optical unit so that the optical axis of the eyepiece optical unit (hereinafter referred to as the eyepiece optical axis) passes near the eyeball center of the user. If it does not pass, a part of the image is visually recognized in a state of being lost or deteriorated due to various aberrations.

Patent Document 1 discloses a method for assisting the mounting and adjustment of a wearable display. Specifically, Patent Document 1 discloses a method of displaying on a display screen an image used for mounting or adjustment, and an image for instructing mounting or adjustment, or instructing mounting or adjustment by voice. There is.

According to Patent Document 2, a determination image for appropriately adjusting the distance between the image display unit and the eye in an image display device that causes the image light subjected to the pupil enlargement processing to be projected on the eye to visually recognize the display image. And a method of displaying an image instructing the display unit to move closer or further away depending on how it looks.

JP, 2006-148404, A JP, 2010-237308, A

In a narrow wearable display area (NED, Near Eye Display) where the display image can be viewed correctly even when the user moves the eyes (NED, Near Eye Display), a given direction side of the image is often worn when worn Situations may occur that are missing and visible. For example, the user may view the top of the image but not the bottom of the image. In this case, since the operation method (the method of improving the positional relationship) for resolving the situation is not sensory, the user may not know how to operate the entire image.

The method of Patent Document 1 displays an instruction such as “adjust the position of the display unit so that all the black lines enter the field of view”, and does not indicate a specific operation content. Therefore, the user can not easily understand how to operate the display unit “the black line is all in the field of view”, which may require time for adjustment.

Further, since the method of Patent Document 2 is applied to an image display apparatus that projects image light subjected to pupil expansion processing, the eye box is relatively large, but the distance between the eye and the eyepiece optical unit is large. And the edge of the image is lost, and on the contrary, even if it is too close, color misregistration occurs in the image. Therefore, in Patent Document 2, on the premise that the eyepiece optical axis passes near the center of the eyeball by pupil enlargement processing, a judgment image for adjusting the distance (position in the front-rear direction) between the eyepiece optical unit and the eyeball is displayed Do. That is, Patent Document 2 does not disclose an adjustment method when the eyepiece optical axis does not pass near the center of the eyeball.

According to some aspects of the present invention, it is possible to provide a wearable display device or the like that facilitates the adjustment of the eyepiece optics by the user by presenting the operation content using the guide image.

According to one aspect of the present invention, a display unit for displaying an image, an eyepiece optical unit disposed in front of the user's eyes, enlarging the image displayed on the display unit and presenting the image as a virtual image to the user An adjustment unit capable of adjusting the position and the orientation of the eyepiece optical axis, and the display unit is configured to adjust the eyepiece optical axis to the eyeball of the user when the eyepiece optical axis does not pass near the eyeball center of the user The present invention relates to a wearable display device that displays a guide image including instruction information indicating operation content for passing near the center.

In one aspect of the present invention, the eyepiece optical axis does not pass near the center of the eye of the user, which may result in the user not being able to properly observe the image (a part of the image may be lost and viewed). A certain wearable display device displays a guide image that specifically shows the operation content for eliminating the state. In this way, it is possible to present the user with an operation for making the appropriate state in an easy-to-understand manner.

Another aspect of the present invention is a display unit for displaying an image, an eyepiece optical unit disposed in front of the user's eyes, enlarging the image displayed on the display unit, and presenting the image as a virtual image to the user An adjustment unit capable of adjusting the position and orientation of the eyepiece optical axis of the department, and the display unit is operable to operate the adjustment unit such that a region where the user can not appropriately view the image is not generated Displaying a guide image including instruction information indicating the guide image, the guide image is divided into a plurality of areas, and the display unit displays the instruction information indicating a first operation content of the plurality of areas of the guide image The instruction information which is displayed in a first area of the guide images and which indicates a second operation content different from the first operation content is different from the first area of the plurality of areas of the guide image Display in area 2 Related to the trouble display device.

In another aspect of the present invention, the guide image is divided into a plurality of areas, and the operation contents displayed in a given area and the operation contents displayed in another area are made different. In the state where the user can not appropriately observe the image, it is considered that the operation content (for example, the moving direction or rotation direction of the eyepiece optical unit) for canceling the state is different depending on the state. In that respect, according to the present invention, instruction information is provided that defines for each state a highly probable area that can be viewed even when the user can not appropriately observe the image, and instructs different operation contents according to the state to each area of the guide image. Include This makes it possible to use the guide image to instruct the user about the appropriate operation content according to the state.

A schematic view of how a virtual image looks through an eyepiece window. Example of a guide image. FIG. 2 is a perspective view of the wearable display device in a state of being attached to the head of the user. FIG. 2 is a top view of the wearable display device in a state of being mounted on the head of a user. The detailed structural example of an eyepiece optical part. The detailed structural example of a connection part and a rotation mechanism. FIGS. 7A and 7B show an example of the relationship between the eyeball center and the eyepiece optical unit, and an example of a virtual image observed by the user. FIGS. 8A and 8B show an example of the relationship between the eyeball center and the eyepiece optical unit, and an example of a virtual image observed by the user. FIGS. 9A to 9D are operation examples of the eyepiece optical unit. The relationship between the direction of a guide image and the direction (coordinate system) based on the user. 11A and 11B show an example of the relationship between the eyeball center and the eyepiece optical unit, and an example of a virtual image observed by the user. The other structural example of a wearable display apparatus. FIGS. 13A and 13B are operation examples of the eyepiece optical unit by the adjustment unit of another method.

Hereinafter, the present embodiment will be described. Note that the embodiments described below do not unduly limit the contents of the present invention described in the claims. Further, not all of the configurations described in the present embodiment are necessarily essential configuration requirements of the present invention.

1. Method of the Present Embodiment FIG. 1 schematically shows how a virtual image looks through the eyepiece window 142. Below, the case where a pupil division see-through optical system is used is explained to an example. In the pupil division see-through optical system, the exit pupil of the optical system is set near the eyepiece (eyepiece window 142), which makes it possible to make the eyepiece smaller. Since the eyepiece is small, light from the outside field view can pass through the outside of the eyepiece and enter the eye pupil, thus realizing see-through. When this optical system is used, for example, the width of the tip of the eyepiece optical unit 140 (the part where the eyepiece window 142 is provided) is 4 mm or less. The optical axis adjustment method of the present embodiment is applicable not only to the pupil division see-through optical system but also to a head mounted display using various types of optical systems.

As shown in FIG. 1, the virtual image observed to the user through the eyepiece optics 140 appears to be projected onto the virtual image plane in front of the eyepiece window 142 as viewed from the user's eyes. That is, the virtual image is viewed from the eyepiece window 142, and this can be interpreted as a virtual cylinder connecting the eyepiece window 142 and the virtual image and viewed as a virtual cylinder.

As shown in FIG. 7B described later, when the eyepiece optical axis AX passes near the eyeball center 64 (hereinafter referred to as “eyeball center vicinity”), the tube looks straight from the front, and the eyepiece Since the area visible to the user through the window 142 (hereinafter simply referred to as the visible area) and the entire virtual image appear to overlap, the display image can be viewed through the eyepiece window 142 without any loss. In this state, as shown in FIG. 1, the difference between the direction in which the user observes the eyepiece window 142 (line of sight) and the eyepiece optical axis AX of the eyepiece optical unit 140 is small. Can be rephrased as a state in which the line of sight and the eyepiece optical axis AX coincide with each other. On the other hand, as shown in FIG. 7A, when the eyepiece optical axis AX does not pass near the center of the eyeball and the tube is in a state of looking into the cylinder obliquely, the visible range and the virtual image are shifted and only a part is overlapped Because you can not see, you can only see the display image of the overlapping part.

In the pupil division see-through optical system, the image is displayed so that the image can be seen in a part of the field of view (typically, for example, a viewing angle of 10 to 15 degrees). Therefore, the image is located not only at the center (front) of the field of view but also at the periphery. It is also possible to That is, reading the information displayed in the image by looking at the eyepiece window 142 located at the periphery (for example, not the front, not the upper right, etc.) of the field of vision while keeping the center of the field of vision clear. it can. In such an optical system in which the display position can be freely determined, it is possible to assume initial positioning when the head mounted display is mounted, and change of the position during use. Then, it is necessary to make adjustments so that the entire image can be seen at that position.

However, an operation for causing the eyepiece optical axis AX to pass near the eyeball center from the state of FIG. 7A, specifically, an operation shown in FIG. 7B or FIG. It is not easy to grasp. In particular, when the user using the wearable display device is a beginner, the user may not know the appropriate operation, which may require time for adjustment.

The pupil division see-through optical system is considered to have many scenes used for teaching at the work site because it can display an image at the periphery of the field of vision while keeping the center of the field of vision clear. For example, a wearable display device is attached to a worker who is not accustomed to work, and work content (work procedure or the like) is displayed as a virtual image. In this way, it is possible to assist the worker as needed without interrupting the work. However, in such a case, the worker is likely to be a beginner also in the operation of the wearable display device. In view of the fact that it is not easy to check the manual of the wearable display device at the work site, it is preferable to indicate the operation content of the wearable display device by the displayed image. Furthermore, even if a leader (skilled person) is around, the user does not know how the image is viewed by the wearer, so the operation content is also displayed in the image visually recognized by the wearer. You may instruct.

On the other hand, Patent Document 1 allows the user to confirm whether or not the entire image can be viewed by displaying a frame line, but if any operation is performed, the state becomes appropriate. Do not tell. Further, in Patent Document 2, it is assumed that one side of the image (the lower side of the image in the example of FIG. 7A) is lost as shown in FIG. 7A because the eye box is enlarged by pupil enlargement processing. I did not. That is, the image loss in Patent Document 2 is a loss of the entire image peripheral area (for example, FIG. 11A to be described later) that occurs when the image display unit is too far from the eye. It is limited to the operation of bringing the display unit close to or away from the eye. Therefore, the method of Patent Document 2 does not cope with the elimination of the image loss caused by the fact that the eyepiece optical axis AX does not pass near the center of the eyeball as shown in FIG. 7A.

As shown in FIG. 3 to FIG. 6 or FIG. 12, the wearable display device 100 according to the present embodiment is provided with a display unit 160 for displaying an image and an image displayed in front of the user's eyes and displayed on the display unit 160. It includes an eyepiece optical unit 140 enlarged and presented to the user as a virtual image, and an adjustment unit 180 capable of adjusting the position and orientation of the eyepiece optical axis AX of the eyepiece optical unit 140. Then, when the eyepiece optical axis AX does not pass near the eyeball center of the user, the display unit 160 displays a guide image including instruction information indicating operation content for causing the eyepiece optical axis AX to pass near the eyeball center of the user indicate.

Here, the eyeball center 64 is a position (point) representing the center of the eyeball 60, and is a rotation center (eyeball rotation point) of the eyeball 60 or the like. The eye center 64 is the center of the sphere when the eye 60 is regarded as a sphere in a narrow sense. Moreover, the vicinity of the eyeball center is a region of a given size with reference to the eyeball center 64. The vicinity of the eyeball center may be a spherical region centered on the eyeball center 64. However, the shape and size near the center of the eye may be defined from the visual state of the image (virtual image).

If the visual axis (line of sight) substantially matches the eyepiece optical axis, the user can correctly observe the entire virtual image. Conversely, when the visual axis (line of sight) and the eyepiece optical axis do not coincide with each other, even if the user directs the line of sight to the eyepiece optical unit 140, a part of the image is lost and visually recognized (or not visible at all) .

It is known that various axes can be defined for the eye. For example, the “visual axis (line of sight)” is defined as a line connecting the fixation point and the retinal fovea. The fixation point represents a point at which the user is looking (a point seen without moving the eye), and the fovea is a portion contributing to vision in a high-definition central visual field, and is a region of about 1 mm in diameter. On the other hand, “gaze line” is defined as a line connecting the fixation point and the eyeball rotation point (rotation center of the eyeball). Although the visual axis and the fixation line are slightly deviated, both pass near the center of the eyeball.

Therefore, when the eyepiece optical axis AX passes near the eyeball center of the user, it can be said that the eyepiece optical axis AX and the line of sight substantially coincide with each other when the user directs the gaze to the virtual image in order to observe the virtual image through the eyepiece window. In other words, when the entire image is correctly viewed by the user without loss of image, it can be expressed as "the eyepiece optical axis AX passes through the vicinity of the center of the eye of the user".

When the eyepiece optical axis AX passes near the eyeball center, the size in the vicinity of the eyeball center may be set based on the design of the eyepiece optical unit 140 in view of visual recognition of the entire image. For example, the “visible range” shown in FIG. 7A and FIG. 7B and the display range (position, size) of the virtual image are both determined based on the optical characteristics of the eyepiece optical unit 140. Therefore, if the design of the eyepiece optical unit 140 is known, the approximate value of the allowable deviation of the eyepiece optical axis AX from the eyeball center 64 (the maximum value of the deviation satisfying the condition that the entire virtual image is visible) It is possible to ask in advance. The vicinity of the eyeball center in the present embodiment may be obtained from the eyeball center 64 and the deviation allowance, or in a narrow sense, may be a spherical region whose center is the eyeball center 64 and the radius becomes the deviation allowance.

However, the setting method in the vicinity of the eyeball center is not limited to the above. For example, the setting process may be simplified by setting the size near the center of the eyeball based on the average size of the entire eyeball 60. Specifically, the size near the center of the eye may be 1 / N (N is a number larger than at least 1) of the average size of the eye 60.

According to the method of the present embodiment, even if the eyepiece optical axis AX does not pass through the vicinity of the eyeball center of the user and a part (one side) of the image is not visually recognized, the operation content for canceling the state is It is possible to present to the user using a visible partial area of the image. Therefore, even if the user is a beginner, it is possible to easily execute an operation for making the entire image visible. Note that the operation content here indicates an operation for changing the position and orientation (hereinafter also referred to as direction) of the eyepiece optical unit 140 in a narrow sense. Specifically, the operation content here may represent a moving operation or a rotating operation of the eyepiece optical unit 140, and an adjusting unit 180 (a movable unit, for moving and rotating the eyepiece optical unit 140) It may represent an operation on a joint, a flexible tube).

However, depending on which direction the eyepiece optical axis AX deviates with respect to the eyeball center 64, the portion where the image is lost differs. As shown in FIG. 7A, when the eyepiece optical axis AX is shifted to the upper side (parietal side) of the eyeball center 64, the lower side of the image is lost. On the other hand, if the eyepiece optical axis AX shifts below the eyeball center 64 (opposite to the top of the head, on the side of the chin), the upper side of the image is lost. If the eyepiece optical axis AX shifts to the right of the eyeball center 64, the left side of the image is lost. If the eyepiece optical axis AX shifts to the left of the eyeball center 64, the right side of the image is lost. And if the part to be lost is different, the operation for making the whole image visible is also different. Specifically, it is necessary to make the moving direction and the rotating direction of the eyepiece optical unit 140 (eyepiece window 142) different.

Therefore, the guide image of the present embodiment is divided into a plurality of areas, and the display unit 160 displays instruction information indicating the first operation content in the first area among the plurality of areas of the guide image, Instruction information indicating a second operation content different from the operation content of 1 is displayed in a second region different from the first region among the plurality of regions of the guide image. In other words, the operation content indicated by the instruction information differs for each area of the guide image.

FIG. 2 is an example of a guide image according to the present embodiment, and in FIG. 2, a region whose outer edge is the dotted line indicated by OB2 represents the guide image. The guide image includes a central area RC, an upper peripheral area RU that is an area above the central area RC, a lower peripheral area RD that is a lower area, a right peripheral area RR that is a right area, and a left area. Divided into the left peripheral region RL. However, FIG. 2 is an example of the guide image, and the division of the area is not limited to FIG. For example, a modification such as dividing the peripheral area into a larger number (for example, dividing into eight including the oblique direction) is possible.

Here, the first region is one of four peripheral regions (RU, RD, RR, RL), and the second region is a region different from the first one of the four peripheral regions. . However, as in the modified implementation described later with reference to FIGS. 11A and 11B, the display of instruction information in the central region RC of the guide image is not hindered either, and even in the central region RC in FIG. The instruction information is displayed. Therefore, it is also possible to consider the central area RC as either the first area or the second area.

In this way, it is possible to give an appropriate instruction to the user according to the missing state of the image (the state of displacement of the eyepiece optical axis AX with respect to the eyeball center 64). As shown in FIG. 7A, in a wearable display device with a narrow eyebox, often, one side of an image may be lost at the time of wearing. In such a state, it is highly probable that the image on the side opposite to the missing side (the upper side in FIG. 7A) is visible. Therefore, in the guide image of the present embodiment, even in the case where a part of the image is lost, in the partial area where the image can be viewed, the operation content for eliminating the loss is indicated.

For example, the guide image includes, in the upper peripheral region RU of the image, instruction information indicating operation content that can eliminate the state where the lower side of the image is lost. From the user's point of view, the lower peripheral region RD, the right peripheral region RR, and the left peripheral region RL of the four peripheral regions are at least partially defective and low in visibility, while the upper peripheral region RU is not A large percentage of the area (the entire area in a narrow sense) is visible as compared with the three areas of (3), and the visibility is relatively high. That is, if the user performs an operation corresponding to instruction information having high visibility among a plurality of pieces of instruction information included in the guide image, the user naturally executes the operation according to the image loss state.

Further, from the viewpoint of dividing the guide image, the method of the present embodiment can be applied to the following wearable display device 100. The display unit 160 of the wearable display device 100 displays a guide image including instruction information indicating an operation content to the adjusting unit 180 such that a region which can not be visually recognized by the user is not generated in the image. The guide image is divided into a plurality of areas, and the display unit 160 displays instruction information indicating the first operation content in the first area of the plurality of areas of the guide image, and the first operation content and the like. The instruction information indicating the different second operation content is displayed in a second area different from the first area among the plurality of areas of the guide image.

In this way, the user can divide the guide image into a plurality of areas and make the operation contents represented by the instruction information different for each area even if the appropriate operation contents differ depending on the situation. It is possible to give appropriate instructions to

2. Configuration Example of Wearable Display Device FIGS. 3 and 4 show a configuration example of the wearable display device 100 according to the present embodiment. FIG. 3 is a perspective view of the wearable display device 100 in a state of being attached to the head 70 of the user. FIG. 4 is a top view of the wearable display device 100 in a state of being mounted on the head 70 of the user.

In FIG. 3 and FIG. 4, the directions DX, DY and DZ are directions perpendicular to each other (including substantially right angles but intersecting in a broad sense). The direction DX is the right direction (the direction from the center of the head 70 to the right side of the head) as viewed from the user, and the direction DY is the upward direction (the direction from the center of the head 70 to the parietal region) as viewed from the user DZ is the front direction (the direction from the center of the head 70 to the front of the face) as viewed from the user.

The wearable display device 100 includes a mounting unit (head mount), an arm 130, a connection unit 110, and an eyepiece optical unit 140 (display device). The wearable display device 100 can also include a pivoting mechanism 120.

The mounting unit is a device (mechanism and component) mounted on the head 70 of the user (wearer) and holding the arm 130 and the eyepiece optics 140 on the head 70. Specifically, the mounting portion includes the first contact portion 10 (first contact portion), the second contact portion 20 (second contact portion), the headband 30, the first connecting portion 40, and the second connecting portion 50. including. The configuration of the mounting unit is not limited to this. For example, the mounting unit may be a spectacles-type frame 150, or may be configured like a headphone equipped with an ear pad (ear pad portion).

The arm 130 is connected (connected) to the first contact unit 10 via the connection unit 110, and holds the eyepiece optical unit 140 at a desired position of the user (for example, in front of the user's eye). The arm 130 is, for example, a linear or curved rod-like member. For example, the eyepiece optical unit 140 is connected (connected) to one end of the arm 130 via the rotation mechanism 120, and the mounting unit is connected to the other end of the arm 130 via the connection unit 110. The connecting portion 110 does not have to be provided at the end of the arm 130, and may be provided at a portion distant from the end of the arm 130. A slide mechanism or the like for adjusting the length of the arm 130 may be further provided.

The eyepiece optical unit 140 is provided at one end of the arm 130 and displays an image in a part of the field of view of the user.

The detailed structural example of the eyepiece optical part 140 is shown in FIG. The eyepiece optical unit 140 includes an optical system 143, guides the image light displayed on the display unit 160 to the eyepiece window 142 by the optical system 143, and from the eyepiece window 142 toward the pupil of the eye (facing the eye line of sight) Emit in the direction of the visual axis) and display an enlarged virtual image of the image in the field of view (project the image on the retina). The optical system 143 includes, for example, a prism, a mirror, a lens, and the like. The eyepiece optical unit 140 can adopt, for example, a pupil division see-through optical system.

The pivoting mechanism 120 is a mechanism for pivotably holding the eyepiece optical unit 140 with respect to the arm 130, and is pivotable, for example, on an axis parallel to the horizontal scanning direction of the display image. Alternatively, it may be pivotable about an axis perpendicular to the axis (including substantially perpendicular, generally intersecting). For example, in the case where the eyepiece optical unit 140 is adjusted in front of the user's eyes and the axis parallel to the horizontal scanning direction of the display image is parallel to the direction DX, even if it can be pivoted about the axis parallel to the direction DZ or the direction DY. Good. Alternatively, it may be freely pivotable in these three axes.

The connection portion 110 is a mechanism (part) for connecting the arm 130 and the mounting portion, and is a mechanism for rotatably holding the arm 130 with respect to the mounting portion. Specifically, the connection portion 110 includes a first rotation mechanism 111 and a second rotation mechanism 112.

The first pivoting mechanism 111 is a pivoting mechanism capable of pivoting the arm 130 on the first axis TX1. The second pivoting mechanism 112 is provided closer to the mounting portion than the first pivoting mechanism 111, and is capable of pivoting the arm 130 with a degree of freedom including the second shaft TX2 and the third shaft TX3. It is. The second axis TX2 is an axis perpendicular to the first axis TX1. The third axis TX3 is an axis perpendicular to the second axis TX2 and (non-parallel) to the first axis TX1. That is, adjacent two of the three axes (the first axis TX1 and the second axis TX2, and the second axis and the third axis TX3) are at right angles. In addition, since the direction of the first axis TX1 is changed by the rotation on the second axis TX2, the angle formed by the third axis TX3 and the first axis TX1 is indeterminate and is not limited to a right angle.

Here, being rotatable with a freedom degree including the second axis TX2 and the third axis TX3 means that only rotation on the second axis TX2 and rotation on the third axis TX3 are possible, and There are cases where rotation with other axes is further possible and cases where rotation is possible with any axis, such as a ball joint or the like.

The detailed structural example of the connection part 110 is shown in FIG. The connection portion 110 includes members (parts) 15, 171 to 175. These members are formed of, for example, a resin or the like.

The eyepiece optical unit 140 is connected to one end of the arm 130, and the other end is provided with a first joint that pivots about a first axis TX1. One end of a first link (member 174) is connected to the first joint, and the other end of the first link is provided with a second joint that rotates about a second shaft TX2. One end of a second link (member 172) is connected to the second joint, and the other end of the second link is provided with a third joint that rotates with a degree of freedom including a third axis TX3. A base (member 15) is connected to the third joint, and the base is fixed to the first contact portion 10. The first joint corresponds to the first pivoting mechanism 111 in FIGS. 1 and 2, and the second and third joints correspond to the second pivoting mechanism 112.

More specifically, each joint of the first and second joints is a pin joint that pivots about one pin. That is, the U-shaped (U-shaped) recess is provided at the other end of the arm 130, one end of the first link (member 174) is inserted into the recess, and the pin (one end) is inserted into the recess and one end of the first link. The member 175) is penetrating. Similarly, a U-shaped (U-shaped) recess is provided at one end of the second link (member 172), the other end of the first link (member 174) is inserted in the recess, and the recess and the first A pin (member 173) passes through the other end of the link. By rotation around these pins (members 175 and 173), rotation on the first axis TX1 and the second axis TX2 is realized. Since the first axis TX1 and the second axis TX2 are at right angles, the pins (members 175 and 173) are provided at right angles.

The third joint is a ball joint that can freely rotate with three degrees of freedom. That is, at the other end of the second link (member 172), the ball receiver of the third joint (a hole into which the ball of the member 171 fits) is provided. The member 171 is a ball portion of a ball joint, and has a structure in which a ball protrudes from one end of a member 15 which is a base. By freely sliding (sliding) between the ball and the ball receiver, rotation of a degree of freedom including the third axis TX3 is realized. The third axis TX3 is an axis perpendicular to the second axis TX2, and is, for example, an axis along the longitudinal direction of the second link (member 172). That is, when the second link is pivoted about the longitudinal direction of the second link, it pivots on the third axis TX3. It is also possible to pivot the second link in a direction perpendicular to the longitudinal direction of the second link by means of a ball joint.

The shape of each member is, for example, as follows. That is, the member 174 which is the first link and the member 172 which is the second link are rod-like members having a cylindrical shape or a square pole shape. The member 15 which is a base is, for example, a square pole. The

members

15, 171 are, for example, integrally formed. The shape of the member 15 is not limited to this. For example, the member 15 may be a plate-like member that curves along the curved shape of the first contact portion 10. Alternatively, the member 171 may be fixed or formed directly on the first contact portion 10, and the member 15 may be omitted.

The adjustment unit 180 in the present embodiment is configured to be able to adjust the position and posture of the eyepiece optical unit 140 (eyepiece window 142), and in the example of FIGS. This is realized by the first rotation mechanism 111 and the second rotation mechanism 112). Also, the adjustment unit 180 may include an arm 130.

3. Example of Operation Content and Guide Image FIGS. 7A to 8B are diagrams showing the relationship between the eyepiece optical axis AX and the eyeball center 64. FIG. FIG. 7A to FIG. 8B are side views in which the eyeball 60 is observed (viewed) from the right side. Moreover, FIG. 7 (A) and FIG. 8 (A) are figures which represent the state before operation with respect to the eyepiece optical part 140 (adjustment part 180), respectively.

As shown in FIG. 7A or FIG. 8A, when the eyepiece optical axis AX deviates to the upper side (parietal side, DY side) with respect to the eyeball center 64, the eyepiece optical axis AX is the eyeball center There are two possible operations for passing 64. One is a moving operation for moving the position of the eyepiece optical unit 140 (eyepiece window 142) downward as shown in FIG. 7 (B). The other is a rotation operation (a tilt operation, a tilt operation) for changing the posture of the eyepiece optical unit 140 as shown in FIG. 8 (B). In any of the operations, the eyepiece optical axis AX passes near the center of the eyeball, so that it is possible to reduce (eliminate) image defects.

FIG. 7B is a diagram for explaining the moving operation. In the state shown in FIG. 7A, the user observes the eyepiece window 142 located above the front of the eye. The visible range is the inside of the angle at which the eyepiece window 142 (effective diameter) is viewed, and therefore, as shown in FIG. 7A, it is a range above the front of the eye. On the other hand, the virtual image is formed perpendicular to the eyepiece optical axis AX and at a predetermined angle of view and a predetermined distance based on the design of the eyepiece optical unit 140. As a result, only the upper side of the image (virtual image) can be viewed by the user, and the lower side of the image is lost.

FIG. 7B is a diagram showing a state after the operation of moving the eyepiece optical unit 140 (eyepiece window 142) downward (front of the user's eye) from the state of FIG. 7A. In the state of FIG. 7B, the virtual image fits within the visible range, so the entire image can be viewed. That is, the display unit 160 may display instruction information indicating an operation of moving the eyepiece optical unit 140 downward in the upper peripheral region RU which can be seen in the state of FIG. 7A in the guide image. In the example of FIG. 2, the display unit 160 displays, in the upper peripheral region RU of the guide image, instruction information in a text format of “move down”.

Note that the viewable range moves downward as viewed from the user by the move operation in FIG. 7B. Also, the parallel movement of the eyepiece optical unit 140 translates the virtual image by the same amount, but the distance from the eye 60 to the virtual image (eg 500) with respect to the movement distance of the eyepiece optical unit 140 (eg several mm) The position of the virtual image is hardly changed by this moving operation because the distance of -2000 mm) is sufficiently large. In other words, the moving operation of the eyepiece optical unit 140 can be considered as an operation in which the visible range is aligned with the position of the virtual image while the position of the virtual image in the field of view of the user is substantially fixed. The movement operation is effective when it is desired to make the entire image visible without moving the position of the virtual image which is only partially visible in the user's view.

On the other hand, FIG. 8 (B) is a figure explaining rotation operation. FIG. 8B is a diagram showing a state after an operation of rotating the eyepiece optical unit 140 (eyepiece window 142) in the vertical direction from the state of FIG. 8A. In this rotation, the portion (AX1) between the eyeball 60 and the eyepiece window 142 in the eyepiece optical axis AX is rotated downward, and the side of the eyepiece optical axis AX ahead of the eyepiece window 142 (the side farther from the eyeball 60) , AX2) are rotated upward. Even in the state of FIG. 8B, since the virtual image falls within the visible range, the entire image can be viewed. That is, the display unit 160 may display instruction information indicating an operation (an operation for turning upward, an upper tilt operation) for rotating the eyepiece optical unit 140 in the upper peripheral region RU which can be seen also in FIG. . In the example of FIG. 2, the display unit 160 displays, in the upper peripheral region RU of the guide image, the instruction information in the text format of “skip up”.

In the rotation operation of FIG. 8B, the position of the visible range in the field of view of the user does not substantially change, and the virtual image moves upward. That is, the rotational operation of the eyepiece optical unit 140 can be considered to be an operation in which the position of the visible range in the field of view of the user is substantially fixed and the position of the virtual image is adjusted to the visible range. In the rotation operation, you do not want to move the position of the visible range in the field of view of the user, but you want to make the entire image visible in it (for example, you want to make the virtual image visible without moving the visible range slightly above the field of view) It is effective in that case.

FIG. 9 (A) is a side view showing a specific example of the movement operation, and FIG. 9 (B) is a side view showing a specific example of the rotation operation. 9A and 9B, the pivoting mechanism 120 and the connecting portion 110 are respectively represented by ball joints, but the specific configuration can be variously modified. As shown in FIG. 9A, the downward movement operation of the eyepiece optical unit 140 can be realized by the rotation operation of the connecting unit 110 with DX (TX1) as the rotation axis. Further, as shown in FIG. 9B, the rotation operation of the eyepiece optical unit 140 can be realized by the rotation operation of the rotation mechanism 120 with DX as the rotation axis.

Although the example in which the eyepiece optical axis AX is shifted to the upper side of the eyeball center 64 has been described above, the case of shifting in other directions may be considered similarly. Specifically, when the eyepiece optical axis AX is displaced below the eyeball center 64, the upper side of the virtual image is lost, and the operation opposite to the case where the eyepiece is displaced upward for eliminating the defect, ie, above the eyepiece optics 140 A movement operation in the direction or a rotation operation in the reverse direction of the eyepiece optics 140 is required. The display unit 160 is instruction information indicating an operation of moving the eyepiece optical unit 140 upward in the lower peripheral region RD which can be visually recognized even if the eyepiece optical axis AX is shifted to the lower side of the eyeball center 64 in the guide image. And it is good to display at least one of the indication information which shows operation (operation which turns down, down tilt operation) which rotates eyepiece optics part 140. In the example of FIG. 2, the display unit 160 displays instruction information in the form of text “move up” and “move down” in the lower peripheral region RD of the guide image.

Furthermore, although the side views of FIG. 7A to FIG. 8B are described above, if FIG. 7A to FIG. 8B are viewed as a top view (a view observed from the top of the head), FIGS. 7A and 8A show a state in which the eyepiece optical axis AX is shifted to the left of the eyeball center 64, and FIG. 7B is a moving operation for eliminating the shift, FIG. Can be considered as a diagram representing a rotation operation for eliminating the deviation.

That is, when the eyepiece optical axis AX is shifted to the left of the eyeball center 64, the image loss can be eliminated by moving the eyepiece optical unit 140 to the right. When the eyepiece optical axis AX is shifted to the left of the eyeball center 64, a portion (AX1) between the eyeball 60 and the eyepiece window 142 in the eyepiece optical axis AX is rotated to the right, and from the eyepiece window 142 of the eyepiece optical axis AX. The image loss can be eliminated by rotating the front (AX2) to the left. Therefore, in the left peripheral region RL of the guide image, the display unit 160 instructs information indicating an operation to move the eyepiece optical unit 140 to the right, and an operation to rotate the eyepiece optical unit 140 (operation to turn to the left, left tilt operation). It is preferable to display at least one of the instruction information to be shown. In the example of FIG. 2, the display unit 160 displays instruction information in text format “move to the right” and “move to the left” in the left peripheral region RL of the guide image.

Similarly, when the eyepiece optical axis AX deviates to the right of the eyeball center 64, the left side of the virtual image is lost, and for the elimination of the defect, the opposite operation to the case of the leftward deviation, ie, to the left of the eyepiece 140. A movement operation or a rotation operation in the reverse direction of the eyepiece optical unit 140 is required. The display unit 160 indicates instruction information indicating an operation to move the eyepiece optical unit 140 to the left and an operation to rotate the eyepiece optical unit 140 (operation to the right, right tilt operation) in the right peripheral region RR of the guide image. At least one of the instruction information may be displayed. In the example of FIG. 2, the display unit 160 displays instruction information in text format “move to left” and “move to right” in the right peripheral region RR of the guide image.

FIG. 9C is a top view showing a specific example of the movement operation, and FIG. 9D is a top view showing a specific example of the rotation operation. FIGS. 9C and 9D correspond to the operation when the eyepiece optical axis AX shifts to the right. As shown in FIG. 9C, the movement operation of the eyepiece optical unit 140 in the left direction can be realized by the rotation operation of the connecting unit 110 with DY (TX2) as the rotation axis. Further, as shown in FIG. 9D, the rotation operation of the eyepiece optical unit 140 can be realized by the rotation operation of the rotation mechanism 120 having DY as a rotation axis.

In the above, in order to simplify the description, an example in which the movement operation of FIGS. 9A and 9C is realized by the rotation operation of the connecting portion 110 has been shown. However, strictly speaking, when the connecting portion 110 is rotated, not only the position but also the posture of the eyepiece optical unit 140 changes. Therefore, the movement operation of the eyepiece optical unit 140 may be realized by a combination of the rotation operation of the connection unit 110 and the rotation operation of the rotation mechanism 120. In addition, it is not hindered that the adjusting unit 180 has more movable parts (joints) as compared with the example of FIGS. 9A to 9D.

Also, the example has been described above in which the instruction information displayed on the guide image is text information. However, other forms may be used as instruction information. For example, as shown in FIG. 2, an icon representing a moving direction or a rotating direction may be displayed together with (or in place of) text information. Although an example in which an arrow is used as an icon is shown in FIG. 2, it is also possible to use another icon which can clearly indicate the moving direction or the rotating direction.

The instruction information may be still image information or moving image information. For example, the images shown in FIGS. 9A to 9D may be used as instruction information. FIG. 9A or the like may be displayed as a still image, or may be displayed as a moving image that animates a change in posture of the adjustment unit 180 (the connection unit 110, the rotation mechanism 120, the arm 130).

As described above, the display unit 160 of the wearable display device 100 according to the present embodiment displays a guide image including instruction information in a region visually recognized when the eyepiece optical axis AX does not pass near the center of the eyeball of the user.

Here, “a region visually recognized when the eyepiece optical axis AX does not pass near the eyeball center of the user” in the guide image corresponds to which side the eyepiece optical axis AX is shifted with respect to the eyeball center 64. In the case where the eyepiece optical axis AX is located above the eyeball center 64 as shown in FIG. 7A, it corresponds to the upper peripheral region RU. If the eyepiece optical axis AX does not pass near the center of the user's eye, the opposite region is highly likely to be visible even if a part of the image is lost. In the case where a part of the guide image is missing, it is possible to estimate to which side the viewable optical axis AX is deviated with respect to the eyeball center 64 in which area still visible. That is, it is possible to associate each area of the guide image with the operation content necessary to make the entire guide image visible. Therefore, by including instruction information representing the operation content in each area of the guide image, it is possible to instruct the user to perform appropriate adjustment.

In addition, the display unit 160 displays instruction information indicating an operation content for causing the eyepiece optical axis AX to pass near the center of the eyeball, in a peripheral region outside the central region in the guide image.

In the case where the eyepiece optical axis AX does not pass near the eyeball center of the user, there is a high probability that the peripheral region on one side of the image is lost and the region on the other side is visible. That is, in order to eliminate the state in which the eyepiece optical axis AX does not pass through the vicinity of the eyeball center of the user, it is preferable to instruct the user for the operation content using the peripheral area.

In addition, the display unit 160 displays a guide image including instruction information indicating at least one operation content of a movement operation for changing the position of the eyepiece optical unit 140 and a rotation operation for changing the posture of the eyepiece optical unit 140.

Here, the movement operation refers to an operation (translational movement operation) in which the position of the eyepiece optical unit 140 (in a narrow sense, the position of the eyepiece window 142) is changed in a narrow sense and the posture of the eyepiece optical unit 140 is not changed. The position of the eyepiece optical unit 140 is represented, for example, by coordinate values in a given coordinate system (for example, a three-dimensional coordinate system defined by three axes DX, DY, DZ in FIG. 1), and the posture is each axis of the coordinate system It is expressed by a rotation angle (a change angle with respect to a reference posture). On the other hand, in a narrow sense, the rotation operation represents an operation of changing the posture of the eyepiece optical unit 140 and not changing the position of the eyepiece optical unit 140. Here, it is shown that the operation content corresponding to the instruction information displayed in the guide image is divided into the moving operation and the rotation operation, and the user combines movement and rotation based on the instruction information. There is no hindrance to performing

In the example of FIG. 2, the movement operation corresponds to the movement in the vertical and horizontal directions, and the rotation operation corresponds to the turning in the vertical and horizontal directions (an operation to rotate the AX 1 in the vertical and horizontal directions). Further, the specific operation may be realized by, for example, a rotation operation around the predetermined axis of the adjustment unit 180 as shown in FIG. 9 (A) to FIG. 9 (D). As described above, in the movement operation, the position of the visible range in the user view changes, but in the rotation operation, the position of the visible range does not change. That is, by displaying instruction information indicating both the moving operation and the rotating operation, the user can freely select the position of the visible range. Alternatively, the guide image includes instruction information representing the operation content of only one of the movement operation and the rotation operation to adjust without changing the position of the virtual image in the user view or the position of the viewable range in the user view It is also possible to decide in advance whether to adjust without changing.

In the guide image, a region on the first direction side with respect to the central region RC is defined as a first peripheral region, and a region on the second direction opposite to the first direction with respect to the central region RC is When the second peripheral region is not visually recognized in the case of the peripheral region of 2, the first peripheral region is instruction information indicating operation content for making the second peripheral region visible when the second peripheral region is not visually recognized. Display on

Here, combinations of (the first direction, the second direction, the first peripheral area, and the second peripheral area) are, for example, four types shown in the following (1) to (4). Here, the first direction and the second direction are directions on the guide image. For example, the vertical direction corresponds to the vertical scanning direction of the image (for example, the start side of the scan is up and the end side is down), the horizontal direction is the horizontal scan direction of the image (for example, the start side of the scan is left and the end side is right Corresponding to).
(1) (Upward, downward, upper peripheral region RU, lower peripheral region RD)
(2) (downward, upward, lower peripheral area RD, upper peripheral area RU)
(3) (right direction, left direction, right peripheral region RR, left peripheral region RL)
(4) (left direction, right direction, left peripheral region RL, right peripheral region RR)

In this way, the area (second peripheral area) where the eyepiece optical axis AX is lost by not passing near the eyeball center of the user (the second peripheral area), and the area with high probability of being visible even in that state (first peripheral area) Can be properly mapped. Therefore, it is possible to display instruction information of appropriate operation content in each area of the guide image. In addition, an oblique direction may be considered as the first direction and the second direction, and the combination of the direction and the peripheral region is not limited to the above four.

In addition, the display unit 160 displays instruction information indicating a moving operation for moving the position of the eyepiece optical unit 140 in the second direction side in the first peripheral region of the guide image.

Here, since the first direction and the second direction are directions based on the guide image, the relationship between the wearable display device 100 (eyepiece optical unit 140) and each direction is determined by how the guide image is displayed and viewed. It depends on what is done. In the present embodiment, the guide image (virtual image) is observed to be perpendicular to the eyepiece optical axis AX, at a predetermined angle of view based on the design of the eyepiece optical unit 140, and at a predetermined distance. That is, the first direction and the second direction are directions in a plane perpendicular to the eyepiece optical axis AX.

FIG. 10 is a perspective view for explaining the positional relationship between the eyeball 60, the eyepiece optical unit 140, and the virtual image. The first direction and the second direction here are directions along a plane showing a virtual image. In FIG. 10, four directions of up, down, left, and right are shown, and a direction (oblique direction) combining any of these directions or a plurality of these directions is taken as a first direction and a second direction. The left and right direction is defined based on the user's viewing direction (the direction from the eye 60 toward the virtual image).

In this way, it is possible to appropriately indicate the moving direction and the rotational direction with respect to the eyepiece optical unit 140 based on the direction on the guide image. That is, in each peripheral region of the guide image, it is possible to indicate an appropriate moving direction of the eyepiece optical unit 140.

In addition, the display unit 160 is an instruction information indicating a rotation operation of the eyepiece optical unit 140 such that the eyeball side (AX1) of the user is rotated to the second direction side with respect to the eyepiece optical unit 140 of the eyepiece optical axis AX. Are displayed in the first peripheral area of the guide image. The display unit 160 performs a rotation operation of the eyepiece optical unit 140 so as to rotate the anterior side of the eyepiece optical unit 140 of the eyepiece optical axis AX (the side farther from the user's eyeball 60, AX2) to the first direction side. It may be considered that the indication information to be shown is displayed in the first peripheral area of the guide image.

In this way, it is possible to indicate an appropriate rotation direction (and rotation axis) of the eyepiece optical unit 140 in each peripheral region of the guide image. As shown in FIG. 8B, the situation in which the instruction information in the first peripheral area is used corresponds to the situation in which the eyepiece optical axis AX is shifted to the first direction side with respect to the eyeball center 64. Therefore, the rotation operation is an operation to move the eyeball passing position of the eyepiece optical axis AX to the second direction side. That is, the eyeball side (AX1) of the user with respect to the eyepiece optical unit 140 of the eyepiece optical axis AX may be rotated in the second direction. In addition, since the rotation operation here is the rotation operation of the eyepiece optical unit 140, the front side (the side farther from the eyeball 60 of the user) than the eyepiece optical unit 140 of the eyepiece optical axis AX is the second direction. It will rotate to the opposite side, ie, the 1st direction side.

The first direction and the second direction are directions set with reference to the guide image or the eyepiece optical unit 140. Therefore, when the posture of the eyepiece optical unit 140 with respect to the eyeball 60 changes, the relative relationship between the first direction and the eyeball 60 also changes. In other words, the first direction and the second direction are directions defined by the coordinate system set in the eyepiece optical unit 140, and the coordinate system is set based on the user (eyeball 60) Different from DX, DY, DZ).

However, in view of appropriately observing the entire virtual image, it is unlikely that the posture of the eyepiece optical unit 140 with respect to the eyeball 60 changes extremely. Therefore, the operation content instructed by the instruction information of the guide image may be defined not by using the guide image or the eyepiece optical unit 140 as a reference but by a coordinate system based on the user. In view of the fact that the relative position of the fixed part (wearing part) of the wearable display device 100 and the user is fixed in the mounted state, the coordinate system based on the user is based on the fixed part of the wearable display device 100 You may think of it as a coordinate system.

For example, an axis in the direction from the center of the head to the side of the head of the user is taken as the first axis, and an axis in the direction from the center of the head to the head of the user is taken as the second axis. The second axis is the second axis. The first axis here corresponds to DX in FIG. 1, the second axis corresponds to DY in FIG. 1, and the third axis corresponds to DZ in FIG.

In this case, when the first peripheral area is the upper peripheral area RU or the lower peripheral area RD of the guide image, the display unit 160 uses the axis in the direction along the first axis (DX) as the axis of rotation and the eyepiece optical unit Instruction information indicating a rotation operation to rotate 140 is displayed in the first peripheral region of the guide image. When the first peripheral area is the right peripheral area RR or the left peripheral area RL of the guide image, the display unit 160 sets the eyepiece optical unit 140 with the axis in the direction along the second axis (DY) as the rotation axis. The instruction information indicating the rotation operation to be rotated is displayed in the first peripheral region of the guide image.

Even in this case, it is possible to instruct an appropriate rotation operation of the eyepiece optical unit 140 in each peripheral region of the guide image.

Further, the instruction information included in the guide image is at least one of text, an icon, a still image, and a moving image.

FIG. 2 shows an example in which text and an icon (arrow) are combined. In addition, as still images and moving images, images such as those in FIGS. 9A to 9D can be used. In this way, it is possible to present instruction information to the user in various formats. In particular, by using an icon or an image, it is possible to intuitively instruct the user an operation that is difficult to understand.

In addition, the display unit 160 may display a guide image including index information indicating whether or not the entire guide image can be viewed.

The index information here may be, for example, an object shown in OB1 of FIG. In FIG. 2, the four isosceles triangle objects shown in OB1 are objects whose tip (apex of the isosceles triangle) points to the four corners of the guide image. By using the index information, it is determined whether or not the entire guide image can be viewed by the user, that is, whether the adjustment such that the eyepiece optical axis AX passes near the center of the eyeball is completed by an appropriate operation It becomes possible to make The index information is not limited to the object shown in OB1. For example, a frame may be displayed on the periphery of the guide image as shown in OB2. Alternatively, the peripheral portion of the guide image may be displayed in a color different from that of the region inside the guide image. In addition, the information displayed as index information can be variously modified.

4. Modifications Several modifications will be described below.

4.1 Adjustment to bring the eyepiece optical unit closer to each other In the above, an example in which a part of the image is lost when the eyepiece optical axis AX does not pass near the eyeball center has been described. However, the image loss is not limited to this.

FIG. 11A is a diagram showing the relationship between the visible range and the virtual image when the distance between the eyeball 60 and the eyepiece optical unit 140 (eyepiece window 142) is large compared to the example of FIG. 7A. . Since the visible range is inside the angle at which the eyepiece window 142 (effective diameter) is seen, if the eyepiece window 142 is relatively far, the visible range becomes narrow. In this case, as shown in FIG. 11A, the eyepiece optical axis AX passes near the center of the eyeball, but the visible range for the size of the virtual image is narrow, so the periphery of the virtual image is lost.

Therefore, in the present modification, display unit 160 displays a virtual image of an angle of view that can be observed by the user in a region of the guide image that is viewed when the angle of view that can be observed by the user is smaller than the display angle of the virtual image. The instruction information indicating the moving operation of the eyepiece optical unit 140 for making the display angle of view or more is displayed.

The display viewing angle of the virtual image, the magnitude of the angle representing the extent to which the virtual image is viewed, corresponds to theta _A of example FIG. 11 (A). Also, the angle of view that can be observed by the user is the size of the angle that represents the viewable range, and corresponds to, for example, θ _B that is the inside of the angle from which the eyepiece window 142 is viewed.

If θ _A ≦ θ _B , the user can visually recognize the entire virtual image, but if θ _A > θ _B as shown in FIG. 11A, the peripheral region of the virtual image is almost equally lost. In this case, the central region RC of the image is highly likely to be visible without being lost. Further, as can be understood by comparing FIG. 7A and FIG. 11A, the defect in FIG. 11A is caused by the distance between the eyeball 60 and the eyepiece optical unit 140 being excessively large.

Therefore, in the present modification, the display unit 160 displays instruction information indicating a moving operation for bringing the eyepiece optical unit 140 close to the eyeball of the user in the central region RC of the guide image. In the example of FIG. 2, the display unit 160 displays instruction information in text format “close” in the center region RC of the guide image. By causing the user to perform an operation to bring the eyepiece optical unit 140 closer to the eyeball 60 based on the instruction information, as shown in FIG. 11B, it is possible to allow the user to visually recognize the image without a defect. The movement operation is considered to be a movement operation in the direction along DZ (in a narrow sense, the -DZ direction). In the example of FIG. 11A, since the eyepiece optical axis AX passes near the center of the eyeball, the elimination of the image loss is realized not by the rotation operation but by the forward and backward movement operation.

4.2 Modification of Adjustment Unit In the above, an example using the adjustment unit 180 including a plurality of movable units (joints, in the narrow sense, the rotation mechanism 120 and the connection unit 110) has been described. However, different configurations may be used as the adjustment unit 180.

FIG. 12 is a perspective view illustrating another configuration example of the wearable display device 100. The wearable display device 100 includes a base unit 190, a connection unit 115, an adjustment unit 180, and an eyepiece optical unit 140. The wearable display device 100 includes a mounting portion (not shown) (the mounting portion shown in FIG. 3 and FIG. 4 and is the first contact portion 10 or the like), and the connection portion 115 is configured to be connectable with the mounting portion Ru.

In the wearable display device 100 of FIG. 12, the adjustment unit 180 is realized by a flexible tube. By using a flexible tube, the adjustment unit 180 can perform various adjustments (can bend at various positions). More specifically, the adjustment section 180 which is a flexible tube is realized at a position where it can be bent or at each position depending on the coil pitch of the coiled member that constitutes the flexible tube, and the material characteristics of the tube main body and the film. The possible bending angle range is determined.

The flexible tube has one end connected to the base portion 190 and the other end connected to the eyepiece optical unit 140. If the relative position between the base portion 190 and the user (eyeball 60) is considered to be fixed, the relative position and posture of the eyepiece optical portion 140 and the eyeball 60 can be obtained by changing the shape (flexure state) of the flexible tube. It is possible to change

FIG. 13 (A) is an explanatory view of a moving operation when the adjusting unit 180 is realized by a flexible tube, and FIG. 13 (B) is an explanatory view of a rotating operation. As shown in FIG. 13A, when the eyepiece optical unit 140 is moved (translationally moved), for example, the flexible tube has a shape having an inflection point in the middle, that is, on the base portion 190 side than a given point. The bending direction is adjusted to be different from the given point in the bending direction on the eyepiece optical unit 140 side. Alternatively, it may be considered that the flexible tube is deformed into an S shape.

Further, as shown in FIG. 13B, the rotation operation of the eyepiece optical unit 140 is performed by performing adjustment such that the left side (−DX side) is extended relative to the right side (+ DX side) of the flexible tube. In the example of 13 (B), it becomes possible to perform the operation of turning to the right. In FIG. 13B, the user can realize the rotation operation by applying a force to, for example, the distal end side of the flexible tube (eyepiece optical unit 140) or the eyepiece optical unit 140 itself.

In the example using the adjustment unit 180 shown in FIGS. 9A to 9D (in a narrow sense, FIGS. 3 to 6), a movable portion (joint) for movement operation, a movable portion for rotation operation Even when (joints) can be considered separately, or in the case of combining and operating a plurality of movable parts, the combination pattern is limited to a small number. Therefore, even with a method of instructing the moving direction or the rotating direction of the eyepiece optical unit 140 by text information, it is considered that the operation by the user is easy. On the other hand, as shown in FIGS. 13A and 13B, when the adjusting unit 180 is realized by a flexible tube, the degree of freedom of adjustment is high, so that the moving operation and the rotating operation can be performed. It is difficult to intuitively understand the adjustment of the flexible tube. Therefore, in the present modification, it is preferable to present, as the instruction information, image information indicating the content of the operation on the flexible tube.

Specifically, each area of the guide image may include the image information (still or moving image) shown in FIG. 13A or 13B as instruction information indicating operation content. . In this way, when moving and rotating the eyepiece optical unit 140 in a desired direction, it is possible to facilitate adjustment of the adjustment unit 180 by the user.

As mentioned above, although embodiment which applied this invention and its modification were described, this invention is not limited to each embodiment and its modification as it is, In the execution phase, it is the range which does not deviate from the summary of invention Can be transformed and embodied. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments and modifications. For example, some components may be deleted from all the components described in each embodiment or modification. Furthermore, the components described in different embodiments and modifications may be combined as appropriate. Further, in the specification or the drawings, the terms described together with the broader or synonymous different terms at least once can be replaced with the different terms anywhere in the specification or the drawings. Thus, various modifications and applications are possible without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 10 ... 1st contact part, 15 ... member, 20 ... 2nd contact part, 30 ... headband,
40 ... 1st connection part, 50 ... 2nd connection part, 60 ... eyeball, 64 ... eyeball center,
70: head, 100: wearable display device, 110: coupling portion,
111 ... 1st rotation mechanism, 112 ... 2nd rotation mechanism, 115 ... connection part,
120: rotation mechanism, 130: arm, 140: eyepiece optics, 142: eyepiece window,
143: optical system, 150: frame, 160: display unit, 171 to 175: member,
180 ... adjustment unit, 190 ... base unit, AX ... eyepiece optical axis, DX, DY, DZ ... direction,
RC: central region, RD: lower peripheral region, RL: left peripheral region,
RR: right peripheral region, RU: upper peripheral region, TX1: first axis,
TX2 ... second axis, TX3 ... third axis

Claims

A display unit for displaying an image;
An eyepiece optical unit which is disposed in front of the user's eyes and which enlarges the image displayed on the display unit and presents the user as a virtual image to the user;
An adjusting unit capable of adjusting the position and direction of an eyepiece optical axis of the eyepiece optical unit;
Including
The display unit is
When the eyepiece optical axis does not pass near the eyeball center of the user, a guide image including instruction information indicating an operation content for causing the eyepiece optical axis to pass near the eyeball center of the user is displayed A wearable display device characterized by
In claim 1,
The display unit is
The wearable display device displays the guide image including the instruction information in a region viewed when the eyepiece optical axis does not pass near the eyeball center of the user.
In claim 1 or 2,
The guide image is divided into a plurality of areas,
The display unit is
The instruction information indicating the first operation content is displayed in a first region of the plurality of regions of the guide image, and the instruction information indicating a second operation content different from the first operation content The wearable display device according to any one of the preceding claims, wherein the second image is displayed in a second area different from the first area among the plurality of areas in the guide image.
In claim 1 or 2,
The display unit is
A wearable display device, wherein the instruction information indicating the operation content for causing the eyepiece optical axis to pass near the eyeball center is displayed in a peripheral region outside the central region in the guide image. .
In any one of claims 1 to 4,
The display unit is
A wearable characterized by displaying the guide image including the instruction information indicating at least one of the moving operation for changing the position of the eyepiece optical unit and the rotating operation for changing the posture of the eyepiece optical unit. Display device.
In claim 1 or 2,
An area on the first direction side of the central area in the guide image is a first peripheral area, and an area on the second direction opposite to the first direction is second area than the central area. If it is
The display unit is
A wearable characterized by displaying, in the first peripheral area, the instruction information indicating the operation content for making the second peripheral area visible when the second peripheral area is not visible. Display device.
In claim 6,
The display unit is
A wearable display device, wherein the instruction information indicating a moving operation for moving the position of the eyepiece optical unit in the second direction is displayed in the first peripheral area of the guide image.
In claim 6 or 7,
The display unit is
The instruction information indicating the rotation operation of the eyepiece optical unit, such as rotating the eyeball side of the user toward the second direction with respect to the eyepiece optical unit of the eyepiece optical axis, corresponds to the guide image A wearable display device characterized by displaying in a first peripheral area.
In claim 6 or 7,
An axis in a direction from the center of the head to the side of the head of the user is taken as a first axis, and an axis in a direction from the center of the head to the head of the user is taken as a second axis. Where the axis corresponding to is the third axis,
When the first peripheral area is the upper peripheral area or the lower peripheral area of the guide image,
The display unit is
The instruction information indicating a rotation operation of rotating the eyepiece optical unit with an axis in a direction along the first axis as a rotation axis is displayed in the first peripheral area of the guide image;
When the first peripheral area is the right peripheral area or the left peripheral area of the guide image,
The display unit is
A wearable display characterized in that the instruction information indicating a rotation operation of rotating the eyepiece optical unit with an axis in a direction along the second axis as a rotation axis is displayed in the first peripheral area of the guide image. apparatus.
In any one of claims 1 to 9,
The display unit is
In the guide image, the angle of view that can be observed by the user is made equal to or greater than the angle of display of the virtual image in a region viewed when the angle of view that the user can observe is smaller than the display angle of view of the virtual image. A wearable display device displaying the instruction information indicating a moving operation of the eyepiece optical unit for the purpose of display.
In claim 10,
The display unit is
A wearable display device, wherein the instruction information indicating a moving operation for bringing the eyepiece optical unit closer to the eyeball of the user is displayed in a central region of the guide image.
In any one of claims 1 to 11,
The wearable display device, wherein the instruction information is at least one of text, an icon, a still image, and a moving image.
In any one of claims 1 to 12,
The display unit is
A wearable display device characterized by displaying the guide image including index information indicating whether or not the entire guide image can be viewed.
A display unit for displaying an image;
An eyepiece optical unit which is disposed in front of the user's eyes and which enlarges the image displayed on the display unit and presents the user as a virtual image to the user;
An adjusting unit capable of adjusting the position and direction of an eyepiece optical axis of the eyepiece optical unit;
Including
The display unit is
A guide image including instruction information indicating an operation content to the adjustment unit is displayed such that an area in which the user can not visually recognize is not generated in the image.
The guide image is divided into a plurality of areas,
The display unit is
The instruction information indicating the first operation content is displayed in a first region of the plurality of regions of the guide image, and the instruction information indicating a second operation content different from the first operation content The wearable display device according to any one of the preceding claims, wherein the second image is displayed in a second area different from the first area among the plurality of areas in the guide image.