WO2013027714A1 - Visiocasque - Google Patents

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Publication number
WO2013027714A1
WO2013027714A1 PCT/JP2012/071038 JP2012071038W WO2013027714A1 WO 2013027714 A1 WO2013027714 A1 WO 2013027714A1 JP 2012071038 W JP2012071038 W JP 2012071038W WO 2013027714 A1 WO2013027714 A1 WO 2013027714A1
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WO
WIPO (PCT)
Prior art keywords
eye
observer
display unit
head
frame side
Prior art date
Application number
PCT/JP2012/071038
Other languages
English (en)
Japanese (ja)
Inventor
憲吾 野田
信郎 開
Original Assignee
ブラザー工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011181128A external-priority patent/JP5648603B2/ja
Priority claimed from JP2011181126A external-priority patent/JP5589992B2/ja
Application filed by ブラザー工業株式会社 filed Critical ブラザー工業株式会社
Publication of WO2013027714A1 publication Critical patent/WO2013027714A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0176—Head mounted characterised by mechanical features

Definitions

  • the present invention relates to a head mounted display (hereinafter, appropriately abbreviated as “HMD”) that displays an image to an observer in a head-mounted state attached to the head of the observer, and in particular, image light.
  • HMD head mounted display
  • the present invention relates to an HMD having a display unit that emits light toward an observer's eye.
  • An HMD that is worn on the observer's head in order to project image light representing an image to be displayed on the observer's eyes is already known. According to the HMD, an observer can directly observe an image without using a screen on which the image is projected.
  • the HMD When the HMD is classified according to the image light forming method, it is spatially modulated, that is, from light emitted from a light source using a spatial modulation element (for example, liquid crystal or organic EL (electroluminescence)) that operates according to an image signal.
  • a spatial modulation element for example, liquid crystal or organic EL (electroluminescence)
  • the method for forming the image light and the scanning type that is, the method for forming the image light by scanning the light emitted from the light source and having the intensity corresponding to the image signal.
  • a see-through method that is, a method in which the observer can observe the display image by the HMD superimposed on the actual outside world
  • a sealed method that is, It is classified into a method in which the incident of external light representing the actual outside world is completely or partially blocked (for example, only for one eye), and the observer can mainly observe only the display image by the HMD. Is done.
  • this type of HMD generally (a) a display unit that displays the image to the observer by projecting image light according to the image signal for displaying the image onto the eye of the observer. And (b) a member to be mounted on the head of the observer (for example, a spectacle frame, a spectacle-shaped dedicated frame, a helmet, a band, goggles, or one ear, which is mounted on the observer's head. And an attachment for attaching the display unit to the attached member by holding the display unit.
  • Patent Document 1 discloses, as an example of the display unit, a monocular display unit that displays the image to the observer by projecting the image light onto an observation eye that is one of the eyes of the observer. is doing. Further, Patent Document 1 discloses a technique in which the same monocular display unit is used by switching between a position for observing an image with the left eye of an observer and a position for observing an image with the right eye. ing.
  • eye-unit distance the distance between the observation eye and the display unit in the case of HMD as described above. It was found that what is measured along the front-rear direction in the part-mounted state affects the length of the eye relief of the HMD. Therefore, it is desirable to design the HMD so that the eye-unit distance matches each other as much as possible between the left-eye observation mode and the right-eye observation mode in order to improve the usability of the HMD by the observer. Got.
  • the present invention is an HMD to which a left / right replacement function for replacing the same display unit between the position for the left eye observation mode and the position for the right eye observation mode is used.
  • the object of the present invention is to provide an apparatus that can easily suppress a decrease in usability of the HMD caused by the addition of the left / right replacement function.
  • a head-mounted display is a head-mounted display that displays an image to an observer in a head-mounted state attached to the head of the observer, and displays the image.
  • a single-eye display unit that displays the image to the observer by projecting image light according to the image signal to the observation eye that is one of the eyes of the observer;
  • An attachment that is attached to a spectacle-type frame that is attached to the observer's head in a state where the display unit is held and attaches the display unit to the frame by holding the display unit.
  • the display unit is attached to the right side of the frame in order to realize a right eye observation mode in which the right eye of the observer is the observation eye by selecting
  • the state is switched to a state in which the display unit can be attached to the left side of the frame in order to realize a left eye observation mode in which the left eye of the observer is an observation eye, whereby the display unit
  • the display unit can be used by being exchanged between the right side portion and the left side portion of the frame, and the display unit has an orientation in which the display unit is attached to the frame via the attachment.
  • the attachment is attached to the frame via the attachment so as to be reversed with each other in a vertical plane that is generally parallel to the left-right direction of the observer in the head-mounted state between the left-eye observation mode and the left-eye observation mode.
  • a right eye frame side member fixed to the right side portion of the frame, having an engaging portion, and the left side of the frame
  • a frame side member and a left side frame side member, and the intermediate member is an observer of the right eye frame side member and the left eye frame side member.
  • the selected frame side member selected by the above-mentioned engaging portion is slidably and detachably mounted in the left-right direction of the observer in the head-mounted state, and the display unit has an engaging portion.
  • the intermediate member is slidably and detachably mounted on the engaging portion so as to be slidable in a substantially vertical direction of the observer in the head-mounted state, and the engaging portion of the selection frame side member and the intermediate member With each other, A left-right position adjustment mechanism that adjusts the relative position of the display unit with respect to the observer's observation eye in the substantially left-right direction according to the operation of the observer is configured, and the engagement between the intermediate member and the display unit The joint unit cooperates with each other to form a vertical position adjustment mechanism that adjusts the relative position of the display unit to the observer's observation eye in the substantially vertical direction in accordance with the operation of the observer. ing.
  • the head-mounted display further includes a left-right detachment preventing mechanism that prevents the intermediate member from sliding from the selected frame side member by sliding to the right or left with respect to the selected frame side member, and the display.
  • a downward detachment preventing mechanism that prevents the unit from sliding off the display unit by sliding downward with respect to the intermediate member.
  • the left-right position adjusting mechanism generates a first resistance force that opposes the movement of the intermediate member sliding relative to the selection frame side member, whereby the intermediate member is The selected frame side member is configured to stop at a position selected by the observer in the substantially left-right direction, and the left-right direction separation preventing mechanism is configured such that the intermediate member is engaged with the selected frame side member.
  • the second resistance force that opposes the sliding motion may be generated as a force larger than the first resistance force before the slide portion is about to slide away from the engaging portion. .
  • the vertical position adjusting mechanism generates a third resistance force that opposes the movement of the display unit sliding relative to the intermediate member, whereby the display unit is moved to the intermediate member.
  • the lower separation prevention mechanism is configured such that the display unit slides with respect to the intermediate member and separates from the intermediate member.
  • the fourth resistance force that opposes the slide motion may be generated as a force larger than the third resistance force before the attempt.
  • the vertical position adjustment mechanism is configured so that a relative position of the display unit with respect to the observation eye of the observer is in a direction of a vertical line passing in front of the observation eye in the head mounted state.
  • the position adjustment direction selected so as to incline toward the observer as it moves downward from the observation eye, the position adjustment direction may be adjusted according to the operation of the observer.
  • the position adjustment direction may be selected such that the smaller one of the two angles formed between the vertical line and the vertical line is about 10 degrees.
  • the attachment, the left / right position adjusting mechanism, and the vertical position adjusting mechanism are arranged between the display unit and the mounted member at a distance between the display unit and the mounted member. Therefore, it may be configured not to have a member that moves to change what is measured along the front-rear direction for the observer.
  • the display unit can be used by replacing the attachment, the left-right position adjustment mechanism, and the vertical position adjustment mechanism of the HMD between the right side portion and the left side portion of the frame. It becomes easy to design so that the distance in the front-rear direction between the display unit and the frame does not change as much as possible regardless of the mounting position. Therefore, according to this invention, the fall of the usability of HMD by the observer resulting from adding the right-and-left changing function of a display unit to HMD can be suppressed easily.
  • FIG. 1 shows HMD shown in left eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD shown in right eye observation mode.
  • FIG. 1 shows HMD in the state which removed the display unit.
  • FIG. 2 shows the frame side member shown in FIG.
  • FIG. 3 shows the lower board of the said frame side member partially.
  • FIG. 3 shows the intermediate member shown in FIG. 3 from a mutually different angle.
  • FIG. 3 shows the intermediate member shown in FIG. 3 from a mutually different angle.
  • FIG. 3 shows the intermediate member shown in FIG.
  • FIG. 7 is a side view showing the focus adjustment mechanism shown in FIG. 6 in different states.
  • FIG. 7 is a side view showing the focus adjustment mechanism shown in FIG. 6 in different states.
  • It is a disassembled perspective view which shows the display unit shown in FIG.
  • It is a top view which shows the display unit shown in FIG. 8 in a respectively different state. It is a top view which shows the display unit shown in FIG.
  • FIG. 8 in a respectively different state. It is a top view which shows the display unit shown in FIG. 8 in a respectively different state. It is a partial side sectional view which expands and shows the connection mechanism shown in FIG. It is a partial side sectional view which expands and shows the connection mechanism. It is a side view which shows the position with respect to the observation eye of the said display unit. It is a top view which shows the position with respect to the observation eye of the exit part in the said display unit. It is a top view which shows the position with respect to the observation eye of the exit part in the said display unit. It is a top view which shows the position with respect to the observation eye of the main-body part in the said display unit.
  • FIG. 1 It is a top view which shows the position with respect to the observation eye of the main-body part in the said display unit. It is a top view which shows the eye relief of HMD shown in FIG. It is a side view which shows the up-and-down position adjustment mechanism shown in FIG.
  • FIG. 1 is a perspective view showing an HMD 10 as an HMD according to an embodiment of the present invention.
  • the HMD 10 includes a see-through display unit 12 and an attachment 14.
  • the display unit 12 is monocular, and is configured to project image light representing an image onto an observation eye that is one of the eyes of the observer (the other eye is a non-observation eye).
  • the display unit 12 generally has a shape extending in the longitudinal direction, and in the state of being mounted on the observer's head (hereinafter referred to as “head mounted state”), in front of the observing eye and before and after the observer It arrange
  • the display unit 12 adopts a see-through type as a display image observation method, that is, a method that allows the observer to observe the actual outside world superimposed on the display image by the display unit 12.
  • the display unit 12 is completely or partially sealed, that is, completely or partially blocks incident light from the actual outside world, and the observer mainly displays the display image mainly. It is possible to adopt a scheme that makes it possible to observe.
  • a frame 20 as a member to be mounted is mounted on the observer's head, the attachment 14 is mounted on the frame 20, and the display unit 12 is mounted on the attachment 14 as shown in FIG. As a result, the display unit 12 is attached to the frame 20 via the attachment 14.
  • the frame 20 is mounted on the observer's head in a state of being put on both ears of the observer.
  • the frame 20 functions as a dedicated frame for observing a display image by the HMD 10.
  • normal glasses for example, near-sighted / far-sighted glasses, sunglasses, working protective glasses
  • a spectacle-shaped frame 20 is used as an example of the mounted member.
  • another type of mounted member for example, a helmet mounted on the head of an observer. , Bands, goggles, etc. can be used.
  • the frame 20 resembles that of normal glasses worn on the observer's head, and can be referred to as a glasses-type frame.
  • the frame 20 is a pair of lenticular transparent bodies 22 and 22 (for example, dummy lenses imitating eyeglass lenses) positioned in front of each of the eyes of the observer in the head-mounted state. Is provided for physically protecting both eyes of the observer from the HMD 10.
  • the pair of lenticular transparent bodies 22, 22 are connected to each other by a bridge 24, and the pair of lenticular transparent bodies 22, 22 and the bridge 24 constitute a front portion 26 of the frame 20.
  • a pair of temples 34, 34 extend from the left side 30L and the right side 30R of the front part 26, respectively.
  • the frame 20 is placed on both ears of the observer by a pair of temples 34 and 34.
  • the front portion 26 further includes a pair of pads 36 and 36 that come into contact with the observer's nose from both sides in the head-mounted state.
  • the pair of pads 36 and 36 come into contact with the observer's nose, so that the frame 20 is positioned relative to the observer's nose and eventually both eyes (front-rear direction, left-right direction, and up-down direction as viewed from the observer). ) Is determined at almost the same position.
  • the attachment 14 will be described.
  • the display unit 12 is attached to the right side 30 ⁇ / b> R of the frame 20 in order to realize a right eye observation mode in which the right eye of the observer is an observation eye according to the selection of the observer.
  • the display unit 12 is switched to a state in which the display unit 12 can be attached to the left side 30L of the frame 20 in order to realize the left eye observation mode in which the left eye of the observer is the observation eye.
  • FIG. 1 and 2A show the HMD 10 in a state used in the left eye observation mode
  • FIG. 2B shows the HMD 10 in a state used in the right eye observation mode.
  • the attachment 14 allows the display unit 12 to be used by being replaced between the right side portion 30R and the left side portion 30L of the frame 20.
  • the display unit 12 is used with its orientation reversed between the right eye observation mode and the left eye observation mode. Specifically, the direction in which the display unit 12 is mounted on the frame 20 via the attachment 14 is set between the right-eye observation mode and the left-eye observation mode with respect to the left-right direction of the observer in the head-mounted state. They are reversed with respect to each other in a vertical plane that is substantially parallel.
  • the attachment 14 includes a left eye frame side member 40L fixed to the left side portion 30L of the frame 20, and a right eye frame side member 40R fixed to the right side portion 30R of the frame 20. And.
  • the left-eye frame side member 40L and the right-eye frame side member 40R have a planar shape extending substantially in the left-right direction in the head-mounted state.
  • the left-eye frame side member 40L and the right-eye frame side member 40R have a structure that is symmetrical with respect to the front-rear center line of the frame 20 in the head-mounted state.
  • the attachment 14 further includes an intermediate member 50 common to the right-eye frame side member 40R and the left-eye frame side member 40L. As shown in FIGS. 2A and 2B, the intermediate member 50 is used by being replaced between the right-eye frame side member 40R and the left-eye frame side member 40L.
  • the frame member 40L for the left eye has an engaging portion 60L, and the engaging portion 60L is detachably and slidably attached to the intermediate member 50 as shown in FIG.
  • the right eye frame side member 40R has an engaging portion 60R similar to the engaging portion 60L, and the engaging portion 60R is detachably and slidably attached to the intermediate member 50.
  • the left-eye frame-side member 40L has an upper plate 66 and a lower plate 68 that are parallel to each other.
  • a lower slot 72 having a width wider than that of the upper slot 70 is opened on the lower side so as to be positioned on the same vertical plane as the upper slot 70.
  • the upper slot 70 and the lower slot 72 have openings 74 and 76 at the end on the same side. Through these openings 74 and 76, the intermediate member 50 is inserted into the left-eye frame side member 40L, and the intermediate member 50 is detached from the left-eye frame side member 40L.
  • the upper plate 66 and the lower plate 68, and the upper slot 70 and the lower slot 72 constitute the engaging portion 60L of the left eye frame side member 40L.
  • the engaging portion 60R of the right eye frame side member 40R has an upper plate 66 and a lower plate 68, and an upper slot 70 and a lower slot 72, which are the right eye frame.
  • An engaging portion 60R of the side member 40R is configured.
  • the lower slot 72 of the left eye frame side member 40L is enlarged and shown in a bottom view.
  • the intermediate member 50 is generally rod-shaped.
  • the intermediate member 50 is an engaging portion 60 (60L or 60R) of a selected frame side member 40 (40L or 40R) selected by an observer from the right eye frame side member 40R and the left eye frame side member 40L.
  • it is slidable and detachable in a substantially left-right direction of the observer in the head-mounted state.
  • the intermediate member 50 has a head portion 80, a neck portion 82, and a trunk portion 84 that are generally arranged in the axial direction and in that order.
  • the body portion 84 extends linearly in the longitudinal direction thereof, but with respect to the head portion 80 and the neck portion 82 that are linearly aligned with each other, in the head-mounted state and in a side view, It is bent backwards. The reason will be described later.
  • the first engaging portion 90 is formed on the neck portion 82 so as to extend in the lateral direction of the intermediate member 50, while the second engaging portion 92 is formed on the trunk portion 84 so as to extend in the longitudinal direction of the intermediate member 50.
  • the first engagement portion 90 is a portion that is detachably and slidably engaged with the engagement portion 60 of the selection frame side member 40.
  • the second engaging portion 92 is a portion that is detachably and slidably engaged with the engaging portion 100 of the display unit 12.
  • the head 80 of the intermediate member 50 is on the left eye frame side in a state where the first engagement portion 90 of the intermediate member 50 is engaged with the engagement portion 60 ⁇ / b> L of the left eye frame side member 40 ⁇ / b> L.
  • the exposed head 80 is exposed from the upper surface of the member 40L (the cross-sectional shape thereof can be a convex cross section such as a triangular cross section, a rectangular cross section, and a semicircular cross section, or a concave cross section. ) Is moved in the left-right direction with respect to the observer by the finger of the user who is the observer.
  • the first engaging portion 90 of the intermediate member 50 is slidably fitted into the upper slot 70 of the engaging portion 60 of the selection frame side member 40.
  • the slide portion 110 and the lower slide portion 112 slidably fitted in the lower slot 72 of the engagement portion 60 of the selection frame side member 40 are provided.
  • a thin plate-like first elastic member 116 (typically, for example, a urethane pad, a rubber pad, or the like is formed on the downward surface 114 of the upper plate 66 of the selection frame side member 40.
  • a member which may be replaced by a member having a curved surface, such as a leaf spring, is mounted so as to extend along the upper slot 70.
  • the exposed surface of the first elastic member 116 slidably contacts a slide surface (upward surface) 118 of the first engagement portion 90 in a state where the intermediate member 50 is mounted on the selection frame side member 40.
  • a frictional force is generated between the intermediate member 50 and the selected frame side member 40 in substantially the left-right direction.
  • the frictional force acts as a first resistance force that opposes the movement during the movement of the intermediate member 50 sliding in one direction with respect to the selected frame side member 40.
  • the intermediate member 50 can be stopped at an arbitrary position in the substantially left-right direction for the observer with respect to the selected frame side member 40.
  • the intermediate member 50 is moved relative to the selected frame side member 40 in a direction selected from the substantially left-right direction.
  • the engaging portion 60 of the selection frame side member 40 and the first engaging portion 90 of the intermediate member 50 cooperate with each other to set the relative position of the display unit 12 with respect to the observer's observation eye in a substantially horizontal direction.
  • the left-right position adjustment mechanism 120 that adjusts according to the operation of the observer is configured.
  • the lower slot 72 of the selection frame side member 40 has a protrusion 122 at the opening 76 thereof.
  • the lower slot 72 has a pair of side wall surfaces 124, 124 extending in the front-rear direction.
  • the pair of side wall surfaces 124 and 124 have their width directions coinciding with the vertical direction.
  • the protrusion 122 is configured as an obstacle that protrudes perpendicularly from the side wall surface 124 on only one of the pair of side wall surfaces 124, 124.
  • the first engaging portion 90 has a pair of slide surfaces 126 and 126 that slidably contact the pair of side wall surfaces 124 and 124 in a state where the intermediate member 50 is mounted on the selection frame side member 40.
  • the first engaging portion 90 of the intermediate member 50 includes a second elastic member 130 in order to prevent the intermediate member 50 from detaching from the selection frame side member 40.
  • the second elastic member 130 is in an engaged state with the selected frame side member 40 among the pair of slide surfaces 126 and 126 of the first engaging portion 90, and is on the selected frame side.
  • the member 40 that is in contact with the side wall surface 124 having the protrusion 122 protrudes in a direction perpendicular to the slide surface 126 and is exposed.
  • the second elastic member 130 is a plate spring having a wave shape in this embodiment, but can be replaced with a spring having another shape.
  • FIG. 4E shows a state in which the corrugated leaf spring is exposed from the slide surface 126 at one peak portion thereof.
  • the leaf spring has a shape and arrangement similar to a corrugated leaf spring as a fourth elastic member described later.
  • the second elastic member 130 In a state in which the intermediate member 50 is mounted on the selection frame side member 40, the second elastic member 130 is elastically pressed against the one slide surface 126 or is not pressed, The second elastic member 130 is pressed against the protrusion 122 before the member 50 slides with respect to the engaging portion 60 of the selection frame side member 40 and attempts to disengage from the engaging portion 60. As a result, a second resistance force that opposes the sliding movement of the intermediate member 50 is generated.
  • the second resistance force is generated as a force larger than the first resistance force.
  • the protrusion 122 and the second elastic member 130 cause the intermediate member 50 to slide to the right or left with respect to the selected frame side member 40 and disengage from the selected frame side member 40 against the will of the user.
  • the left-right direction separation preventing mechanism 132 is configured to prevent this.
  • the second engaging portion 92 of the intermediate member 50 has a shape that extends linearly in a cross section that generally forms a T-shape.
  • the second engaging portion 92 is a plate-like bottom portion 140 that extends linearly, and corresponds to a lateral stroke of the T-shape, and is integrally formed on one surface of the bottom portion 140.
  • the vertical wall 142 is formed in the T-shape and corresponds to the vertical stroke of the T-shape.
  • the vertical wall portion 142 extends along a vertical plane that extends in the longitudinal direction of the bottom portion 140 and bisects the bottom portion 140.
  • the engaging portion 100 of the display unit 12 has a vertical direction on a surface constituting the back surface in the head-mounted state among a plurality of surfaces constituting the outer surface of the display unit 12.
  • the engaging portion 100 has an engaging groove 144 that extends linearly in a cross section that is generally T-shaped.
  • the engagement groove 144 includes a bottom surface 146, a pair of wide side wall surfaces 148 and 148 that define an internal space corresponding to a horizontal stroke of the T shape along the longitudinal direction, and a vertical stroke of the T shape.
  • a pair of narrow side wall surfaces 150 and 150 defining an internal space corresponding to the length along the longitudinal direction.
  • the pair of narrow side wall surfaces 150, 150 are enlarged and shown in a front view.
  • the second engaging portion 92 of the intermediate member 50 is slidably fitted into the engaging groove 144 having such a shape.
  • the engaging groove 144 is open at both ends 154 and 156 thereof.
  • the intermediate member 50 is inserted into the engagement groove 144 for shifting to the left-eye observation mode through one of both end portions 154 and 156 of the engagement groove 144, and the other end portions 154 and 156 are inserted. Then, the intermediate member 50 is inserted into the engagement groove 144 for shifting to the right eye observation mode.
  • a thin plate-like third elastic member 160 (typically a flat member such as a urethane pad or a rubber pad, for example, a leaf spring, etc., is formed on the bottom surface 146 of the engagement groove 144. , Which may be replaced with a member having a curved surface) is mounted so as to extend along the engaging groove 144.
  • the exposed surface of the third elastic member 160 slidably contacts the front end surface (rear facing surface) 162 of the bottom portion 140 of the second engaging portion 92 in a state where the intermediate member 50 is mounted on the display unit 12.
  • a frictional force is generated between the intermediate member 50 and the display unit 12 in a substantially vertical direction.
  • the friction force acts as a third resistance force against the movement during the movement of the intermediate member 50 sliding in one direction with respect to the display unit 12.
  • the intermediate member 50 can be stopped at an arbitrary position in the substantially vertical direction for the observer with respect to the display unit 12.
  • the intermediate member 50 is moved relative to the display unit 12 in a direction selected substantially in the vertical direction.
  • the second engagement portion 92 of the intermediate member 50 and the engagement portion 100 of the display unit 12 cooperate with each other, and the relative position of the display unit 12 with respect to the observer's observation eye is substantially in the vertical direction.
  • a vertical position adjustment mechanism 170 that adjusts according to the operation of the observer is configured.
  • the horizontal position adjustment mechanism 120 and the vertical position adjustment mechanism 170 are used as adjustment mechanisms for adjusting at least one of the relative position and angle of the display unit 12 with respect to the frame 20.
  • the left and right position adjustment mechanism 120 and the vertical position adjustment mechanism 170 constitute a position adjustment mechanism 172 in cooperation with each other.
  • the one shown on the right side in the drawing is the one located on the upper side in the left-eye observation mode among the both ends 154 and 156 of the engagement groove 144.
  • a projection 176 is formed.
  • the projections 178 are formed in the two ends 154 and 156 of the engagement groove 144 positioned on the upper side in the right eye observation mode.
  • the former protrusion 176 prevents the display unit 12 from sliding down from the display unit 12 against the intermediate member 50 against the intention of the observer in the left-eye observation mode (prevents falling off).
  • the latter protrusion 178 is for preventing the display unit 12 from falling off in the right-eye observation mode.
  • the second engagement portion 92 includes a fourth elastic member 180 in order to prevent the intermediate member 50 from being detached from the display unit 12.
  • the fourth elastic member 180 is exposed from one of the side surfaces 182 and 182 of the vertical wall portion 142 of the second engagement portion 92 that is located on the right side in the left-eye observation mode, and protrudes from the side surface 182 at a right angle.
  • the second engagement portion 92 is attached.
  • the fourth elastic member 180 is a leaf spring having a corrugated shape as shown in FIG. 5C, but can be replaced with a spring having another shape.
  • the fourth elastic member 180 is elastically pressed against the one wide side wall surfaces 148 and 148 or is not pressed.
  • the fourth elastic member 180 is pressed against the protrusion 176 or 178 before the display unit 12 slides downward with respect to the intermediate member 50 and is about to be detached from the intermediate member 50.
  • a fourth resistance force that opposes the sliding movement of the display unit 12 is generated.
  • the fourth resistance force is generated as a force larger than the third resistance force.
  • the protrusion 176 or 178 causes the fourth elastic member 180 to be moved unless an operation force greater than the third resistance force is applied to the intermediate member 50. Therefore, the display unit 12 can be prevented from falling off (the intermediate member 50 remains on the selection frame side member 40) against the user's will.
  • the protrusions 176 and 178 and the fourth elastic member 180 prevent the display unit 12 from sliding and moving away from the intermediate member 50 against the user's will.
  • the prevention mechanism 186 is configured.
  • the display unit 12 has a housing 200 that is generally hollow, extending in the longitudinal direction thereof.
  • the housing 200 is made of synthetic resin.
  • An image light forming unit 202 (see FIG. 6) for forming the image light is accommodated in the housing 200.
  • the display unit 12 includes a main body portion 210 that accommodates the image light forming unit 202, and an emission port portion 214 in which an emission port 212 that emits image light formed by the image light formation unit 202 toward the observation eye is formed. So as to be aligned with each other along the longitudinal direction.
  • the main body portion 210 has a horizontally long cross section extending in the front-rear direction with respect to the observer in a head-mounted state.
  • the exit portion 214 has a horizontally long cross section that extends in the front-rear direction with respect to the observer in a head-mounted state.
  • the shape of the horizontally long cross section reflects the shape of the image display area that forms a horizontally long rectangle in which the viewer perceives the image displayed by the display unit 12.
  • the vertical dimension of the horizontally long cross section of the exit port portion 214 is set to be smaller than the vertical dimension of the horizontally long cross section of the main body portion 210.
  • the image light forming unit 202 includes an LCD 220 as a generally plate-shaped spatial light modulation element that generates the image light by two-dimensionally spatially modulating incident light.
  • the LCD 220 is a liquid crystal display in which a plurality of pixels are arranged two-dimensionally.
  • the display unit 12 is a spatial light modulation type.
  • the retinal scanning type that is, a light beam from a light source such as a laser is scanned by a scanner, and the scanned light beam is observed by an observer. You may change to what is projected on the retina.
  • the image light forming unit 202 further includes a plate-like drive circuit 222.
  • the drive circuit 222 is electrically connected to the LCD 220 via a cable (not shown).
  • the drive circuit 222 drives the LCD 220 based on an image signal input from the outside, and thereby emits image light representing an image to be displayed to the observer from the LCD 220.
  • the LCD 220 includes a backlight light source, but a light source independent of the LCD 220 may be used instead of the light source.
  • the drive circuit 222 and the LCD 220 (including a focus adjustment mechanism 230 described later) are housed in a portion of the housing 200 that belongs to the main body portion 210.
  • the LCD 220 has a rectangular image display surface composed of a pair of opposing long sides and a pair of opposing short sides, and the LCD 220 is a pair of image display surfaces in a head-mounted state. Are arranged in the image light forming unit 202 such that the long sides of the are extended in the front-rear direction.
  • the image light forming unit 202 further includes a focus adjustment mechanism 230 that adjusts the focus position of the image light by displacing the LCD 220 back and forth in the optical axis direction.
  • the focus adjustment mechanism 230 includes an LCD holder 232, a support mechanism 234, an LCD adjuster 236 (operation unit), and a motion conversion mechanism 238.
  • the focus adjustment mechanism 230 is housed in a part of the housing 200 belonging to the main body part 210, as with the LCD 220.
  • the LCD 220 has an optical axis direction coinciding with the longitudinal direction of the image light forming unit 202 and is supported in the housing 200 so as to be displaceable in the optical axis direction.
  • the LCD 220 is held by an LCD holder 232 so as to be integrally rotatable and movable, and the LCD holder 232 is a part of the housing 200 or another member fixed to the housing 200 (in this embodiment,
  • the support member 234 provided on the stationary member 240) is supported so as to be movable in the optical axis direction and not rotatable.
  • the LCD adjuster 236 is installed in the housing 200 so as to be coaxial with the optical axis and surround the outer periphery of the LCD holder 232.
  • the LCD adjuster 236 is supported by the housing 200 so that it cannot move in the optical axis direction and can rotate coaxially. Thereby, the LCD adjuster 236 is rotated by a necessary angle in accordance with a user operation at a fixed position in the optical axis direction.
  • the LCD adjuster 236 includes a front portion and a rear portion in the head-mounted state.
  • the plurality of surfaces constituting the housing 200 are exposed from the front surface and the rear surface.
  • a plurality of teeth are formed on the outer peripheral surface of the LCD adjuster 236 in order to improve the operability for the user.
  • the motion conversion mechanism 238 is associated with the LCD adjuster 236 and the LCD holder 232.
  • the motion conversion mechanism 238 converts the rotational motion of the LCD adjuster 236 into the linear motion of the LCD holder 232, thereby moving the LCD 220 to a desired position along the optical axis direction.
  • the motion conversion mechanism 238 has a spiral cam groove 242 formed on the outer peripheral surface of the LCD holder 232 and a radius formed on the inner peripheral surface of the LCD adjuster 236, as shown in FIG. 7A.
  • a drive pin (not shown) extending in the direction. The drive pin is engaged with the cam groove 242 without any change, and is relatively moved along the cam groove 242 in the engaged state.
  • the drive pin performs a circular motion around the optical axis, and the circular motion is converted into a linear motion of the LCD holder 232 by the joint action of the cam groove 242 and the support mechanism 234. .
  • the motion conversion mechanism 238 can perform a necessary motion conversion by a mechanism other than the cam mechanism, and includes, for example, a screw mechanism (for example, a female screw formed on the inner peripheral surface of the LCD adjuster 236, and an LCD holder).
  • a screw mechanism for example, a female screw formed on the inner peripheral surface of the LCD adjuster 236, and an LCD holder.
  • 232 may be a male screw formed on the outer peripheral surface of the H.232, in which the female screw is screwed.
  • the display unit 12 further includes an eyepiece optical system 246.
  • the eyepiece optical system 246 is configured as a one-dimensional array in which a plurality of lenses as a plurality of optical elements are arranged in series. These lenses share the same optical axis.
  • the optical axis extends in a straight line parallel to the longitudinal direction of the housing 200 and without being bent by a component such as a mirror.
  • the eyepiece optical system 246 is accommodated in a portion of the housing 200 that belongs to the main body portion 210.
  • the drive circuit 222, the LCD 220, the focus adjustment mechanism 230, and the eyepiece optical system 246 that are arranged in a line are all housed in the main body portion 210.
  • terminal lens the most downstream lens (hereinafter referred to as “terminal lens”) 248 may accidentally touch the terminal lens 248 unless special measures are taken. There is. When the user touches the terminal lens 248, the terminal lens 248 becomes dirty, which may cause deterioration of the display image.
  • the eyepiece optical system 246 includes a protective transparent body (for example, a transparent disc made of synthetic resin) 250 disposed downstream of the terminal lens 248.
  • the protective transparency 250 functions to prevent direct access to the end lens 248 by the user, thereby protecting the end lens 248 without degrading the image quality.
  • the user can prevent loss of image light and thus deterioration of image quality by cleaning or replacing the protective transparent body 250 as necessary.
  • the exit portion 214 is a half mirror as an example of a partial reflection / partial transmission optical element that bends the image light emitted from the eyepiece optical system 246 and guides it to the observation eye (an example of a deflection member that deflects the image light toward the observation eye).
  • the half mirror 260 is attached to the distal end portion of the emission port portion 214 so as to be rotatable about the vertical axis.
  • the half mirror 260 can be rotated between a storage position and a deployment position (use position).
  • the half mirror 260 is rotatably mounted on the exit port portion 214 in a posture protruding from the exit port portion 214 toward the observation eye.
  • the image light emitted from the eyepiece optical system 246 is reflected by the half mirror 260, passes through the pupil of the observation eye, and enters the retina (not shown). Thereby, the observer can observe the two-dimensional image as a virtual image. Not only the image light reflected by the half mirror 260 but also light (external light) from the actual outside world passes through the half mirror 260 and enters the observation eye. As a result, the observer can observe the actual outside world in parallel with the observation of the image displayed by the image light.
  • the display unit 12 is divided into a part called a main body part 210 and a part called an exit part 214, and these parts are connected so as to be separable from each other.
  • the exit port portion 214 is separated from the main body portion 210, the user can access the protective transparent body 250 for cleaning.
  • the display unit 12 further includes a connection mechanism 270 that removably connects the main body portion 210 and the emission port portion 214 to each other.
  • the coupling mechanism 270 is configured so that, in the head-mounted state, the exit port portion 214 (for example, the tip of the half mirror 260) is the observation eye or its part of the observer's face.
  • the exit port portion 214 may come into contact with the potential contact object during use of the HMD 10, the exit port portion is not in contact with the potential contact object. As a result, the safety of the HMD 10 during use is improved.
  • the coupling mechanism 270 is a moment generated in the exit port portion 214 by the first external force acting on the exit port portion 214 from the potential contact object, and the exit port portion 214 is connected to the main body portion 210.
  • the output port portion 214 can be detached from the main body portion 210 by the rotation of the contact point with the contact point.
  • the coupling mechanism 270 is connected to the first outlet end portion 272 that is joined to the main body portion 210 in the connected state to the main body portion 210 in the emission port portion 214, and is connected to the emission port portion 214 in the main body portion 210.
  • the second outlet end portion 274 and the second outlet end portion 274 that are joined to the outlet portion 214 are disposed.
  • the first joint end 272 of the exit port portion 214 and the second joint end 274 of the main body portion 210 both have a generally rectangular shape in cross section, and the first joint end 272.
  • the end surface of the second joint end 274 are generally parallel to each other and upper and lower horizontal edges 276 and 278 extending in the front-rear direction in the head-mounted state, and generally parallel to each other and the head. It has front and rear vertical edges 280 and 282 extending in the vertical direction in the mounted state.
  • FIGS. 9A and 9B when the first external force acts on the exit portion 214 from the observer's face, the exit portion 214 is observed with respect to the main body portion 210 among the pair of vertical edges 280 and 282. It is relatively rotated around a front vertical edge 280 (a contact point between the exit port portion 214 and the main body portion 210) far from the person.
  • connection mechanism 270 causes the emission port portion 214 to be generated by the second external force. Can be detached from the main body portion 210.
  • the user when it is necessary to perform maintenance such as cleaning the protective transparent body 250 on the display unit 12, the user easily removes the emission port portion 214 from the main body portion 210. As a result, the ease of maintenance of the HMD 10 is improved.
  • the coupling mechanism 270 is configured such that the removal of the exit port portion 214 by the first external force is easier than the removal of the exit port portion 214 by the second external force.
  • the first external force necessary for the separation by the rotation of the emission port portion 214 is the first force necessary for the separation by the translational movement of the emission port portion 214. It is comprised so that it may become smaller than 2 external forces. Therefore, according to the present embodiment, even if the emission port portion 214 may come into contact with the potential contact object, the safety design that prevents the contact from continuing is provided in the display unit 12. It is realized with higher priority than the design that improves maintainability.
  • the coupling mechanism 270 has a convex portion 290 and a concave portion 292 that can be engaged and disengaged with each other.
  • One of the convex portion 290 and the concave portion 292 is formed in the main body portion 210, and the other is formed in the emission port portion 214.
  • the convex portion 290 is cantilevered to the upper plate 294 and the lower plate 296 that are opposed to each other in the vertical direction in the first joint end portion 272 of the emission port portion 214.
  • hooks 300, 300 formed integrally with each other.
  • Each hook 300 is formed in a thin plate shape with a laterally long cross section, and extends substantially in the left-right direction from the emission port portion 214 toward the main body portion 210 in the head-mounted state.
  • the upper and lower convex portions 290 and 290 protrude at the same position in a plan view and in opposite directions in a side view.
  • Each hook 300 is made of a synthetic resin, and can be elastically deformed in a direction perpendicular to the surface thereof, whereby each convex portion 290 is substantially in the vertical direction relative to the emission port portion 214. It is possible to be elastically displaced. That is, each hook 300 functions as a cantilever elastic beam.
  • the concave portion 292 is cantilevered and integrally formed on the upper plate 302 and the lower plate 304 facing each other in the vertical direction in the second joint end portion 274 of the main body portion 210.
  • the receiving portions 310 and 310 are formed.
  • the upper and lower recesses 292 open at the same position in a plan view and in opposite directions in a side view. Similar to the hook 300, the receiving portion 310 extends from the main body portion 210 toward the emission port portion 214 in the substantially left-right direction in the head-mounted state.
  • the receiving portion 310 extends in a cantilevered manner from the main body portion 210, as with the hook 300, but unlike the hook 300, the receiving portion 310 does not substantially elastically deform due to the material mechanical structure of the receiving portion 310. That is, the receiving portion 310 acts as a stationary member, while the hook 300 acts as a movable member.
  • the upper convex portion 290 formed at the first joint end 272 of the emission port portion 214 engages with the upper concave portion 292 formed at the second joint end 274 of the main body portion 210. ing.
  • the convex portion 290 and the concave portion 292 are in contact with each other on the inclined surfaces 312 and 314 formed respectively.
  • the convex portion 290 causes the concave portion 292 and the convex portion 290, as shown in FIG.
  • the convex portion 290 is detached from the concave portion 292 when the portion 290 and the concave portion 292 get over by elastic displacement in the facing direction in which the portion 290 and the concave portion 292 face each other (in the example shown in FIGS. 10A and 10B, the vertical direction).
  • the portion in which the convex portion 290 comes into contact with the concave portion 292 can be detached.
  • Inclined slope 312 is formed.
  • a slope 314 inclined in the direction in which the convex portion 290 can be detached is formed in a portion of the inner wall surface of the concave portion 292 that comes into contact with the convex portion 290 when the convex portion 290 gets over the concave portion 292.
  • Each of the inclined surfaces 312 and 314 has an orientation that helps the convex portion 290 get over the concave portion 292.
  • the exit port portion 214 it is necessary for the exit port portion 214 to be separated from the main body portion 210 as compared with the case where a vertical surface is adopted instead of the inclined surface in the portion where the convex portion 290 and the concave portion 292 contact each other in the engaged state. Force is reduced, thereby avoiding the situation where the exit portion 214 is not or is difficult to separate when it should be separated from the body portion 210.
  • the upper and lower convex portions 290 are the corresponding ones of the upper plate 294 and the lower plate 296 of the exit port portion 214, and the head mounted state of the HMD 10. Are symmetrically arranged at positions that are generally central in the front-rear direction (left-right direction in FIG. 8) with respect to the observer.
  • the convex portion 290 is detached from the concave portion 292.
  • the required force is the same. That is, when the convex portion 290 is disposed so as to approach one of the vertical edges 280 and 282, the principle of separation of the convex portion 290 by the rotation around the vertical edge 280 or 282 close to the convex portion 290 is used. However, it is difficult to separate the convex portion 290 by turning around the vertical edge 280 or 282 far from the convex portion 290 because this principle cannot be used.
  • the force necessary for detaching 214 from the main body portion 210 depends on the direction of rotation of the exit port portion 214.
  • the force necessary for the exit port portion 214 to be detached from the main body portion 210 does not depend on the rotation direction of the exit port portion 214.
  • FIG. 12A shows a plan view of the division position at which the display unit 12 is divided into the emission port portion 214 and the main body portion 210 in relation to the position of the observation eye 320.
  • the second joint end 274 of the main body portion 210 is exposed.
  • the exposed second joint end 274 may come into contact with the potential contact object (in this embodiment, the lenticular transparent body 22 in front of the observation eye).
  • the division position is determined so as not to be positioned directly in front of the observation eye 320 when the HMD 10 is mounted on the head.
  • the emission port portion 214 is separated from the main body portion 210, the second joint end 274 of the main body portion 210 is exposed, and the exposed second joint end 274 is exposed to the potential contact object ( In particular, the possibility of touching the observation eye 320) is reduced, and this also improves the safety of the HMD 10 during use to the user.
  • the display unit 12 and the attachment 14 may be arranged in front of the observation eye 320 in the head-mounted state.
  • an image display function including securing of the image display area, realization of a target resolution, and a focus adjustment function
  • a position adjustment function of the position adjustment mechanism 172
  • the relative arrangement with respect to the observation eye 320 is set.
  • the design of the HMD 10 for ensuring the image display function will be described.
  • the target shape the horizontal rectangle and the target aspect ratio
  • the target size the image of the HMD 10
  • the display unit 12 is designed such that the exit portion 214 has a horizontally long cross section extending in the front-rear direction with respect to the observer in a head-mounted state.
  • the shape of the horizontally long cross section of the exit portion 214 is set so as to reflect the shape of the image display area.
  • the horizontally long cross section of the emission port portion 214 is a cross section obtained by virtually cutting the emission port portion 214 along a vertical plane extending in the front-rear direction in the head-mounted state.
  • the cross section may be a horizontally long rectangle or a horizontally long ellipse (including an ellipse).
  • the exit port portion 214 is arranged with respect to the observation eye so as to have a horizontally long cross section in a side view, the aspect ratio of the cross section of the exit port portion 214 is more square than the horizontally long cross section. Compared with a case where the cross-sectional shape is close to, the area where the observer's front view is shielded by the exit portion 214 is reduced.
  • the vertical dimension of the horizontal cross section of the exit port portion 214 is the vertical dimension of the horizontal cross section of the main body portion 210 (this embodiment). In the form, it is set to be smaller than the vertical dimension in the head-mounted state. Therefore, according to the present embodiment, compared to the case where the vertical dimension of the horizontal cross section of the exit port portion 214 is equal to or larger than the vertical dimension of the horizontal cross section of the main body portion 210, the observer's front field of view is larger. The area shielded by the exit portion 214 is reduced.
  • the size of the LCD 220 (the size of the display surface) is set to the emission port portion 214 in order to ensure the resolution of the display image. It is designed to be larger than the size of the cross section. Future advances in technology and mass production effects may lead to the creation of LCDs 220 that are cheaper but can achieve similar performance while being smaller LCDs 220. At present, LCDs 220 are relatively large. With the design of the size of the LCD 220, the size of the cross section of the main body portion 210 that accommodates the LCD 220 is designed to be larger than the size of the cross section of the emission port portion 214.
  • the main body portion 210 is arranged with respect to the observation eye so as to have a horizontally long cross section in a side view, the aspect ratio of the cross section of the main body portion 210 is larger than that of the horizontally long cross section. Compared to the case where the cross-sectional shape is close to a square cross section, the area where the front view of the observer is shielded by the main body portion 210 is reduced.
  • a front-rear position adjustment mechanism that adjusts the display unit 12 in the front-rear direction with respect to the observation eye 320 is provided.
  • the function of the position adjusting mechanism 172 is simplified so that the size thereof is smaller than the position adjusting mechanism of the type having such a front and rear position adjusting mechanism.
  • the emission port portion 214 and the main body portion are compared.
  • the size is increased in the order of 210 and the position adjustment mechanism 172.
  • a human may feel discomfort such as a feeling of pressure or a blockage from the obstacle.
  • the degree of such discomfort is not the same regardless of the relative position of the obstacle with respect to the observation eye 320, and varies depending on the position of the obstacle. Some locations feel strong discomfort while others do not feel so much discomfort. It is desirable to determine the relative position of each part of the HMD 10 with respect to the observation eye 320 in consideration of such human visual field characteristics (perception characteristics).
  • FIG. 11 is a side view showing well-known four visual field regions for the observation eye 320. These visual field areas have an effective visual field area located at the center, a stable visual field area located outside the effective visual field area, a guide visual field area located further outside, and an auxiliary visual field area located further outside. According to one published definition, the field of view classification is as follows:
  • Effective visual field region This is a region in which an object can be captured only by eye movements and a target object (visual information) can be received from noise, and an observation eye 320 when a human is looking straight ahead Is about 15 degrees left and right, about 8 degrees above, and about 12 degrees below.
  • Stable field-of-view region This is a region where the subject can be glanced at comfortably by accompanying the movement of the observer's head to the eye movement, and about 30-45 degrees to the left and right with respect to the line of sight when the observation eye 320 is observed forward, It is an area within about 20-30 degrees above and about 25-40 degrees below.
  • Auxiliary visual field region The perception of the presented object is extremely low, and is a region that works to induce a gaze action to a strong stimulus or the like. It is an area within 200 degrees and approximately 85-135 degrees above and below.
  • the relative position of each part of the HMD 10 with respect to the observation eye 320 is determined in consideration of the above-described human visual characteristics.
  • the main body portion 210 has an upstream portion US and a downstream portion DS with respect to the traveling direction of the image light, and the downstream portion thereof.
  • a body portion 210 is detachably connected to the exit port portion 214 at the end of the DS.
  • the main body portion 210 has a larger vertical size than the downstream portion DS in the upstream portion US. This is because the LCD 220 which is an optical element larger than the other optical elements is accommodated in the upstream portion US.
  • the exit port portion 214 of the display unit 12 has to play an essential role of projecting image light onto the observation eye 320. It must be placed within the effective visual field area. In addition, in view of the vertical size of the exit port portion 214, the entire exit port portion 214 cannot be disposed in the effective visual field region. As shown in the plan view of FIG. 12A and the side view of FIG. The portion 214 and a part of the downstream portion DS extend to the stable gaze field area, but are arranged outside the stable gaze area, that is, not to the guidance visual field area. This condition is satisfied in the entire movable range of the display unit 12 by the position adjusting mechanism 172.
  • the discomfort experienced by the observer from the exit port portion 214 during use of the HMD 10 is reduced as compared with the case where even a part of the exit port portion 214 exists in the guidance visual field region.
  • the main body part 210 protrudes in the vertical direction with respect to the emission port part 214. More precisely, in the present embodiment, as shown in FIG. 6, the upstream portion US of the main body portion 210 has a downstream portion DS and an exit portion 214 (substantially the same vertical size). ) In the vertical direction. This is because the main body portion 210 accommodates the LCD 220 and the focus adjustment mechanism 230 that are larger than the size of the image display area. As shown in the plan view of FIG. 12A, the side view of FIG. 12B, the plan view of FIG. 12C and the side view of FIG.
  • the upstream portion US and the downstream portion DS of the main body portion 210 are They are not present in the stable focus field area, and are arranged so as to straddle the guidance visual field area and the auxiliary visual field area. This condition is satisfied in the entire movable range of the display unit 12 by the position adjusting mechanism 172.
  • the observer receives less from the main body portion 210 during use of the HMD 10 than when the upstream portion US of the main body portion 210 is partly present in the stable gaze area. Pleasure is reduced.
  • Position Adjustment Mechanism 172 As shown in the perspective view of FIG. 1 and the side view of FIG. 11, the position adjustment mechanism 172 is located behind the main body portion 210 in the head mounted state of the HMD 10. As shown in FIG. 1, the position adjustment mechanism 172 has a portion that is disposed on the back surface of the display unit 12 and protrudes upward from the display unit 12 in a side view. Therefore, although not shown in FIGS. 11 and 12A to 12D, the position adjustment mechanism 172 has a larger vertical size than the main body portion 210 of the display unit 12.
  • the position adjusting mechanism 172 is entirely present in the auxiliary visual field region, and is not present at all in the guiding visual field region inside the auxiliary visual field region. This condition is satisfied in the entire movable range of the movable portion of the position adjusting mechanism 172.
  • the discomfort experienced by the observer from the position adjustment mechanism 172 during use of the HMD 10 is reduced compared to the case where the position adjustment mechanism 172 is even partially in the guidance visual field region.
  • the same display unit 12 in order to switch the observation mode of the HMD 10 between the left-eye observation mode and the right-eye observation mode, the same display unit 12 includes the left-eye frame side member 40L and the right-eye frame. It is replaced with the side member 40R.
  • a movement is performed between the display unit 12 and the frame 20 to change the distance in the front-rear direction between the display unit 12 and the frame 20 (a factor that affects the length of the eye relief described later). No members are present. Therefore, it is avoided that the distance in the front-rear direction between the display unit 12 and the frame 20 differs between the left-eye observation mode and the right-eye observation mode, depending on the user's replacement operation.
  • the observer selects the position of the display unit 12 relative to the frame 20 in the front-rear direction for the observer in the position in the left-right direction and the direction in the up-down direction. Unlike position, it cannot be adjusted. This means that there is no individual difference (for example, preference difference) between the observers in the front-rear direction position as much as the left-right direction position and the up-down direction position, so the necessity for adjustment for each observer is not so high. And the structure of the HMD 10 ensures that the relative position of the display unit 12 relative to the frame 20 is common between the left-eye observation mode and the right-eye observation mode. means.
  • the frame 20 is eyeglass type
  • the pair of pads 36, 36 of the frame 20 is not observed by the observer without paying special attention to the observer's own head.
  • the relative position of the frame 20 with respect to the observation eye 320 is determined to be almost one. That is, the relative position of the frame 20 with respect to the observation eye 320 is constant during each use of the HMD 10 and is maintained constant during each use.
  • the eye relief of the HMD 10 that is, the final point of the optical path of the image light in the display unit 12 (the point where the image light enters the half mirror 260, and the image light is observed from the half mirror 260.
  • the distance between the exit pupil of HMD 10 (the vicinity of the pupil position in observation eye 320) and the left eye observation mode and the right eye observation mode are common to each other. It is guaranteed. That is, the eye relief ER L for the left eye observation mode, and the eye relief ER R for the right eye observation mode, always is being guaranteed to be consistent with each other.
  • the left-right difference of the eye relief of the HMD 10 that is, the eye relief is prevented from being different between the left-eye observation mode and the right-eye observation mode. The situation where the observer feels uncomfortable due to the cause is avoided.
  • a unit reference line RL extending in the front-rear direction of the display unit 12 is set for the display unit 12.
  • the line of sight of the observation eye 320 when the observer looks straight ahead is the above-described line of sight SL during forward observation.
  • the display unit 12 is generally positioned with respect to the observation eye 320 so that the unit reference line RL and the forward observation line of sight SL coincide with each other or are parallel to each other in a side view. .
  • the present inventors may maintain the same line of sight when the observer looks at the direction of a straight line slightly inclined downward as moving away from the observation eye 320 with respect to the line of sight SL during forward observation. The fact that the observation eye 320 is not easily fatigued was also found.
  • the unit reference line RL of the display unit 12 has a downward angle ⁇ (for example, about approximately) as it moves away from the observation eye 320 with respect to the front observation line of sight SL in a side view.
  • the HMD 10 is designed so that the attachment 14 holds the display unit 12 so as to be inclined by 10 degrees.
  • the display unit 12 In order to arrange the display unit 12 so as to be inclined with respect to the forward viewing line of sight SL in a side view, as shown in FIGS. 4C to 4E, the display unit 12 is arranged in a substantially vertical direction.
  • the body portion 84 that slidably engages with the head portion 80 extends linearly in the longitudinal direction thereof. It is bent backward with respect to the neck portion 82.
  • the observer can observe the display image of the HMD 10 without tensing the muscles of the observation eye 320 so that the observer can continuously display the display image of the HMD 10.
  • the observation eye 320 does not become so tired.
  • the vertical position adjustment mechanism 170 is downward from the observation eye 320 with respect to the vertical line VL passing in front of the observation eye 320 in a side view. It is designed to adjust the position of the display unit 12 in the vertical position adjustment direction, with the direction of a straight line inclined backward by an angle ⁇ as moving away from the vertical direction.
  • the angle ⁇ is the smaller of the two angles formed between the vertical position adjustment direction and the direction of the vertical line VL.
  • the vertical position adjustment mechanism 170 translates the display unit 12 in a side view.
  • the angle formed by the actual line of sight of the observation eye 320 and the unit reference line RL in the side view is the angle ⁇ .
  • the angle ⁇ is selected so as to coincide with the angle ⁇ , but can be selected differently.
  • the display unit 12 is disposed close to the front surface of the lenticular transparent body 22 located in front of the observation eye 320 in a side view.
  • the lenticular transparent body 22 has a forward tilt angle ⁇ , similar to the display unit 12 in the head-mounted state.
  • the lenticular transparent body 22 and the display unit 12 have substantially the same forward tilt angle ⁇ . Have.
  • the display unit 12 is linearly displaced by the vertical position adjustment mechanism 170 in a substantially parallel manner to the straight line approximating the lenticular transparent body 22 in a side view. This means that the display unit 12 is transparent in the entire range of movement of the display unit 12 as long as the necessary distance is secured between the display unit 12 and the front surface of the lens-like transparent body 22. It is guaranteed that there is no contact in front of the body 22, ie no interference.
  • the display unit 12 is linearly displaced in the vertical position adjustment direction by the vertical position adjustment mechanism 170, but the display is displayed along an arc centered on the center of the observation eye 320.
  • the vertical position adjustment mechanism 170 may be changed so as to displace the unit 12. This also applies to the left / right position adjustment mechanism 120.

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Abstract

L'invention porte sur un visiocasque (HMD) à fonctionnalité ajoutée dans lequel le même dispositif d'affichage peut être attaché et utilisé au niveau soit d'une position d'observation d'œil gauche soit d'une position d'observation d'œil droit, de sorte que la réduction d'utilisabilité du HMD par un utilisateur due à la fonctionnalité ajoutée soit supprimée. Une unité d'affichage (12), au moyen d'une fixation (14), est attachée à une monture du type lunettes (20) qui est montée sur la partie tête d'un observateur. La fixation comprend du matériel côté monture pour l'œil droit (40R) qui est fixé à la partie côté droit (30R) de la monture, du matériel côté monture pour l'œil gauche (40L) qui est fixé à la partie côté gauche (30L), et du matériel intermédiaire (50) qui peut être attaché et utilisé au niveau de l'un ou l'autre des matériels côté monture. Le matériel intermédiaire est monté sur celui du matériel côté monture pour l'œil droit et du matériel côté monture pour l'œil gauche qui est sélectionné par l'observateur, d'une manière telle que le matériel intermédiaire peut être fait coulisser dans une direction sensiblement horizontale et être détaché de celui-ci. De plus, le matériel intermédiaire est monté sur l'unité d'affichage d'une manière telle que le matériel intermédiaire peut être fait coulisser dans une direction sensiblement verticale et être détaché de celle-ci.
PCT/JP2012/071038 2011-08-23 2012-08-21 Visiocasque WO2013027714A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2011-181126 2011-08-23
JP2011181128A JP5648603B2 (ja) 2011-08-23 2011-08-23 ヘッドマウントディスプレイ
JP2011-181128 2011-08-23
JP2011181126A JP5589992B2 (ja) 2011-08-23 2011-08-23 ヘッドマウントディスプレイ

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104407438A (zh) * 2014-10-20 2015-03-11 深圳市亿思达科技集团有限公司 智能眼镜
US11064188B2 (en) 2019-07-29 2021-07-13 Htc Corporation Driving method for calculating interpupillary distance and related head-mounted device
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CN104407438A (zh) * 2014-10-20 2015-03-11 深圳市亿思达科技集团有限公司 智能眼镜
EP3893042A4 (fr) * 2018-12-06 2022-01-26 Sony Group Corporation Mécanisme d'entraînement et casque de réalité virtuelle
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