JP2017120336A - Head-mounted image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head-mounted image display device having a lightweight and simple structure, which stably holds an image display module for projecting image light onto a user's eye.SOLUTION: The head-mounted image display device of the present invention includes an image display unit for projecting image light onto a user's eye, and a head band part where the image display unit is detachably attached at an observation position in front of the user's eye. The head band part includes an elastically deformable head band made of a thin plate having a first width and extending in an arch form along the head circumference, and a connection receptacle on at least one end side face of the head band to fix a connecting member of the image display unit. The head band has a fixing part in each of both ends and an occipital region. The fixing part at both ends has a second width larger than the first width and is in contact with a position outside an eye socket of user's right/left cheek bone; the fixing part at the occipital region is in contact with the occipital region of the user; and the head band is held on user's head via the abutting three fixing parts.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a head-mounted image display device, and more particularly, to a head-mounted image display device having a lightweight and simple structure that stably holds an image display unit that projects image light onto a user's eyes.

  In a conventional head-mounted image display device, so-called head-mounted display (hereinafter referred to as HMD), as means for mounting the device on the head, for example, Japanese Patent Application Laid-Open No. 2005-43701, A base member having a pad that comes into contact with an ear periphery of the user's temporal region is connected to one end portion of the headband, and the base member and a pad portion disposed at the other end portion of the headband A structure for pressing the temporal region is disclosed.

  Japanese Patent Laid-Open No. 2001-330794 discloses left and right support members that are coupled to both ends of the headband so as to be able to contact the head, and left and right support members that adjust the positions of the left and right support members with respect to the head. A structure having the adjusting means is disclosed.

  However, the above-described conventional HMD head mounting mechanism has a complicated configuration for holding the image display unit that projects an image on the user's eyes in a highly stable manner and uses a large number of parts and members. Therefore, the manufacturing cost is increased, and it is heavy and bulky. Therefore, there is a problem that a load on a user is large in an application in which the manufacturing is performed for a long time.

JP 2005-43701 A JP 2001-330794 A

  The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is a lightweight and simple structure head that stably holds an image display module that projects image light onto a user's eyes. The object is to provide a wearable video display device.

  To achieve the above object, a head-mounted image display device according to an aspect of the present invention projects a display optical system that emits image light, and projects the image light emitted from the display optical system onto the user's eyes. An image display unit including an eyepiece optical system, and a housing in which the display optical system and the eyepiece optical system are housed, and the image display unit mounted on a user's head and positioned at an observation position in front of the user's eyes A headband portion that is detachably held, and the image display unit includes a connecting member for connecting and fixing the image display unit to the headband portion, An elastically deformable headband in which a thin plate having a width of 1 extends in an arc shape along a head circumference direction from the back to both sides of the head, and the connection of the image display unit to at least one side of the headband A connection receiving portion to which a material is connected, and the headband has fixing portions at both ends and the back of the head, and each of the fixing portions at both ends is larger than the first width. The user has a second width and abuts on the outer orbital position of the left and right cheekbones of the user, the fixing portion of the occipital region contacts the occipital region of the user, and the three fixing portions that are in contact with each other, The headband portion is held on the user's head.

Each of the fixing portions at both ends of the headband has a predetermined flat portion, and lower side portions of both ends of the headband corresponding to the respective flat portions are extended downward to the second width. Can have.
The headband portion may be disposed at a position where each fixing portion of both end portions of the headband comes into contact with the temple of the eyeglass when the user wears the eyeglass.

The flat portions of the fixing portions at both ends of the headband are arranged in the headband direction of the headband across the first pair of opposite sides along the headband direction of the headband and the extended lower side portion. It may be a plane composed of a second set of opposite sides perpendicular to each other.
The image display unit may be connected and fixed to the desired position separated from either one of the fixing parts at both ends of the headband in the direction of the fixing part of the occipital region via the connection receiving part.

According to the head-mounted image display device of the present invention, it is possible to provide a head-mounted image display device having a simple structure that can be stably mounted on the user's head.
Further, according to the head-mounted image display device of the present invention, it is possible to provide a head-mounted image display device that is lightweight and inexpensive to manufacture.

1 is a plan view schematically showing a state in which a user wears a head-mounted image display device according to an embodiment of the present invention on a head. It is the schematic which shows the structure of the image display unit of the head mounted image display apparatus by one Embodiment of this invention shown in FIG. 1, (a) is a top view, (b) is a front view. It is a schematic diagram which shows the other example which fixes the image display unit of the head mounted image display apparatus by one Embodiment of this invention to a headband part. FIG. 2 is a side view schematically showing a state in which the user wears the head-mounted image display device according to the embodiment of the present invention shown in FIG. 1 on the head. It is a schematic diagram which shows the holding | maintenance position of the headband part of the state with which the user mounted | wore the head-mounted image display apparatus by one Embodiment of this invention with the head. It is a schematic diagram which shows the holding | maintenance position of a headband part when the state in which the user mounted | wore the head mounted image display apparatus by one Embodiment of this invention was looked down on from the front upper direction of a user. It is a schematic diagram which shows the site | part of the skull corresponding to the holding position of the headband part shown in FIG. It is a schematic diagram which shows the site | part of the skull corresponding to the holding position of the headband part shown in FIG. It is a schematic diagram which shows the holding | maintenance position of the headband part of the state with which the user wearing spectacles mounted | wore the head with the head mounted image display apparatus by one Embodiment of this invention.

  Hereinafter, specific examples of embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view schematically showing a state in which a user wears a head-mounted image display device according to an embodiment of the present invention on the head.

  A head-mounted image display device 1 according to the present embodiment is a small and lightweight head-mounted image display device that performs image data display, data communication with an external device, and photographing, as shown in FIG. The image display unit 100 and the headband unit 200 that holds the image display unit 100 at the observation position in front of the user's eye E are included. The image display unit 100 is detachably connected and fixed via a connection receiving part 220 provided on one end side of the headband 210 of the headband part 200. A detailed mounting method will be described later.

  2A and 2B are schematic views showing the configuration of the image display unit of the head-mounted image display device according to the embodiment of the present invention shown in FIG. 1, wherein FIG. 2A is a plan view and FIG. 2B is a front view. is there.

  As shown in FIG. 2, the image display unit 100 includes a display unit 10 including a first storage chamber 10 a, a second storage chamber 10 b, and a support member 11, and a support unit 20 a connected to the display unit 10. Part 20. In the first storage chamber 10a of the display unit 10, the display optical system 30 that converts image data into image light and emits it, and in the second storage chamber 10b, the image light generated by the display optical system 30 is received by the user's eyes. An eyepiece optical system 40 leading to E is accommodated, and a printed circuit board 34 on which electronic circuit components for controlling the image display unit 100 are mounted, a battery 35, and the like are accommodated in the housing 20a of the support unit 20. .

  The display optical system 30 stored in the first storage chamber 10a includes a light source 31, a condensing lens 32, and an image display element 33. Although not shown, the display optical system 30 includes other optical elements and drive circuits for the image display element. The image light thus emitted is emitted toward the eyepiece optical system 40. Although not shown, the first storage chamber 10a is provided with a camera unit and various sensors. These functional modules are connected to the printed circuit board 34 accommodated in the housing 20a of the support unit 20 and flexible wiring (see FIG. Electrically connected by not shown)

  The image display element 33 is configured by, for example, an LCD (Liquid Crystal Display), which is a transmissive liquid crystal display element in which pixels serving as regions through which light passes are arranged in a matrix.

  The light source 31 emits light of each color of R (red), G (green), and B (blue), and includes, for example, an LED (light emitting diode). The light source is preferably composed of an RGB integrated LED panel, but may emit monochromatic light or white light. The light from the light source 31 is condensed through the condenser lens 32 and supplied to the image display element 33.

  The display optical system 30 is not limited to the above-described configuration, and is a configuration in which a reflective liquid crystal display element, LCOS (Liquid Crystal On Silicon), a polarizing beam splitter (PBS), a reflecting plate, and the like are combined. It is also possible to make it.

  The eyepiece optical system 40 disposed in the second storage chamber 10b includes a prism 41 and an eyepiece lens 42. The prism 41 moves the optical path L of the image light incident from the display optical system 30 in the direction of the user's eye E. It is a light guide member that functions as a means for reflecting. The eyepiece lens 42 has positive power (refractive power) and condenses image light on the user's eye E. The prism 41 is configured by a single prism or a combination of a plurality of prisms. In the present embodiment, the prism 41 is formed integrally with an eyepiece lens 42 bonded to the incident surface.

  The support member 11 of the display unit 10 includes two support plates (11a and 11b) facing each other in the vertical direction (Z-axis direction), and there is a space between the support plates. Therefore, the user's line of sight is not blocked by the support member 11. In addition, in order to reinforce both support plates (11a, 11b), the support member 11 can be covered with a member such as a transparent resin. In the present embodiment, the support member 11 is formed of two support plates (11a, 11b) facing each other, but is not limited thereto. For example, it can be formed of a single support plate or column. In this case, the support plate or the support column may be formed of a transparent member. A protect plate (not shown) made of a transparent elastic member for protecting the user's eyes may be disposed on the surface of the second storage chamber 10b facing the user's eyes.

  The printed circuit board 34 housed in the housing 20a of the support unit 20 is not individually illustrated, but includes a microprocessor, an image processor, a flash memory chip, a memory module, a wireless communication LSI module, an acceleration sensor, and a speaker. And external components and other components necessary for the operation of the image display device are incorporated.

  In addition, a connecting member 20 b for fixing the image display unit 100 to the headband unit 200 is provided on the side surface of the housing 20 a of the support unit 20. The connection member 20b according to the present embodiment includes a magnet and is fixed to a connection receiving portion 220 provided on one end side of the headband 210 by a magnetic force. The structure of the connection receiving part 220 of the headband 210 will be described later.

  FIG. 3 is a schematic diagram showing another example of fixing the image display unit of the head-mounted image display device according to the embodiment of the present invention to the headband unit.

  In this example, the cable 21 connected to the image display unit 100 is used as a connecting member, a snap-type fastener (cable hook) is provided on the connection receiving portion 220 of the headband 210, and the cable 21 is connected to the connection receiving portion. Fit into 220 hook and fix. The cable 21 is an electric communication cable for connecting a separate controller or external device to the image display unit 100, and is covered with a flexible tube, and is connected to the image display unit 100 of the embodiment shown in FIG. Can also be applied.

  The method of fixing the image display unit 100 to the headband unit 200 is not limited to this as long as it is a simple configuration in which separate fixing structures are not added to both ends of the headband. A clip may be provided as the connecting member, and the headband 210 may be sandwiched and fixed by the clip.

  FIG. 4 is a side view schematically showing a state where the user wears the head-mounted image display device according to the embodiment of the present invention shown in FIG. 1 on the head.

  As shown in FIG. 4, the image display unit 100 is fixed to the connection receiving portion 220 on one end side of the headband 210 via a connection member (not shown).

  As shown in FIG. 1, the headband unit 200 is made of an elastically deformable thin plate that extends in an arc shape along the head circumference direction from the back head to both heads when mounted on the user's head 301. The headband 210 and a connection receiving part 220 for connecting and fixing the image display unit to the outer side surface of at least one end side of the headband are provided.

  As shown in FIG. 4, the headband 210 is formed of a thin plate having a predetermined first width W <b> 1 except for both end portions to be described later along the head surrounding direction from the back head to both heads. The thin plate constituting the headband 210 is made of plastic or a composite plate of metal and plastic. The connection receiving part 220 is formed integrally with the thin plate of the headband 210, and a magnet or a metal plate (not shown) is embedded in a predetermined location in the formed connection receiving part 220. A method of embedding a magnet or a metal plate (not shown) in the connection receiving portion 220 is not particularly limited, but a known method such as adhesion or screwing can be applied.

  FIG. 5 is a schematic diagram showing the holding position of the headband part in a state where the user wears the head-mounted image display device according to the embodiment of the present invention on the head. FIG. 6 is a schematic diagram showing the holding position of the headband unit when the user wears the head-mounted image display device according to the embodiment of the present invention from the upper front of the user. FIG. 7 is a schematic diagram showing a portion of the skull corresponding to the holding position of the headband portion shown in FIG. 5, and FIG. 8 shows a portion of the skull corresponding to the holding position of the headband portion shown in FIG. It is a schematic diagram shown.

  As shown in FIGS. 4 and 5, the headband 210 has fixing portions (211 to 213) at positions opposite to both ends and the back of the head. The fixing parts (211 to 213) are parts (parts) of the headband 210 that come into contact with the user's head.

  As shown in FIGS. 7 and 8, the headband unit according to the present embodiment places the fixing portions (211, 212) at both ends of the headband 210 at positions outside the orbit of the left and right cheekbones (302, 303) of the user. Abut. The area near the outer orbit of the zygomatic bone is away from the masticatory muscles for moving the mandible, so the effect of muscle movement is less than that of the temples covered by the temporal muscles, and the headband is stable. Can be held. A conventional head-mounted image display device has a cushioned large pad that is placed around the ears and temples so that the headband pads that come into contact with the side of the head can be prevented. Since the structure is pressed by the mounting mechanism, there is a problem that the mounting mechanism is complicated, heavy, and the manufacturing cost increases.

  On the other hand, the headband part according to the present embodiment abuts the fixing parts (211 and 212) at both ends of the headband 210 on the cheekbones (302 and 303) outside the orbit, respectively. By the three-point support of these and the fixing portion 213 that comes into contact with the back of the head, it is held on the user's head. It is also possible to apply a non-slip treatment to the surface of the headband 210 corresponding to each of these fixing parts or to attach a protective sheet. However, the headband portion according to the present embodiment does not require an additional structural member such as a pad portion to fix the headband portion to the temporal region, and thus has an advantage that the configuration is simple and can be manufactured at low cost. .

  As shown in FIGS. 4 and 5, the fixing portions (211, 212) at both ends of the headband 210 according to the present embodiment each have a predetermined plane portion, and the lower side of the headband corresponding to each plane portion. The portion has a second width W2 that extends downward and is greater than the first width. Specifically, the flat portions of the fixing portions at both ends of the headband are the first set of opposite sides along the headband direction of the headband and the headband of the headband extending downward. It is a plane composed of a second set of opposite sides perpendicular to the direction.

  For example, the first width W1 is in the range of 10 mm to 30 mm, and the second width W2 is in the range of 15 mm to 35 mm. Moreover, the thickness of the thin plate of the headband 210 in the fixing portions (211 and 212) at both ends is in the range of 1 mm to 4 mm. Accordingly, the fixing portions (211 and 212) at both ends are not supported by one point on the step provided on the cheekbone but are supported by a line of a certain length, that is, a side. Can be held stably, and the user's wearing feeling can be improved. It should be noted that the total length of the headband 210 along the head circumference direction from the occipital region to the heads on both sides can be set based on the statistical value of the human head circumference, and the head circumference direction of the fixing parts at both ends Is a margin for adjusting individual differences in head circumference for each user. The lengths along the head circumference direction of the fixing parts at both ends are each in the range of 10 mm to 40 mm.

  FIG. 9 is a schematic diagram showing a holding position of the headband unit in a state where a user wearing glasses wears the head-mounted image display device according to the embodiment of the present invention on the head.

  As shown in FIG. 9, the head-mounted image display device according to the present embodiment has fixing parts at both ends of the headband 210 when the user wears the head-mounted image display device while wearing glasses. (211 and 212) are placed on the step provided on the cheekbone in contact with the temple 401 of the glasses. At this time, since the fixing portions (211 and 212) at both ends of the headband 210 have predetermined plane portions, the eyeglass temples 401 are in surface contact with the temples 401 of the glasses corresponding to the plane portions. Abut. As a result, the headband unit 200 is placed on the occipital region 213 for fixing the back of the head, the fixing regions on both ends that contact the temple 401 of the spectacle frame worn by the user, and the cheekbones (302, 303) of the user. It is stably held on the user's head through the lower side portions of the fixing portions at both ends.

  In addition, the fixing portions (211 and 212) at both ends of the headband 210 abut on the temple 401 between the lens frame (rim) 402 and the modern 403 of the spectacles, so that the headband 210 is the spectacle temple of the spectacles. The force that presses 401 is distributed and received by the lens frame (rim) 402 and the modern 403 of the glasses. For this reason, no force is applied to the portion where the user's temple or the spectacle frame (modern) behind the ear hits, and the load on the user due to the mounting of the headband unit 200 can be reduced.

  With the above-described configuration, the head-mounted image display device according to the embodiment of the present invention does not require an additional mechanism or member for fixing the headband unit, and thus the structure is simple, light, and inexpensive. There is an effect that can be done. In addition, even when wearing glasses, the burden on the user is small, and the wearing can be stably performed.

  As mentioned above, although embodiment of this invention was described in detail, referring drawings, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the technical scope of this invention, it changes variously. It is possible to implement.

DESCRIPTION OF SYMBOLS 1 Head-mounted image display apparatus 10 Display part 10a, 10b (1st, 2nd) storage chamber 11 Support member 11a, 11b Support plate 20 Support part 20a Housing | casing 20b Connecting member 30 Display optical system 31 Light source 32 Condensing lens DESCRIPTION OF SYMBOLS 33 Image display element 34 Printed circuit board 35 Battery 40 Eyepiece optical system 41 Prism 42 Eyepiece lens 100 Image display unit 200 Headband part 210 Headband 211,212,213 Fixed part 220 Connection receiving part 301 Head part 302,303 Cheekbone 401 Temple
402 Lens frame (rim)
403 modern

Claims (5)

An image including a display optical system that emits image light, an eyepiece optical system that projects image light emitted from the display optical system onto a user's eye, and a housing that houses the display optical system and the eyepiece optical system A display unit;
A headband unit mounted on the user's head and detachably held at the observation position in front of the user's eyes;
The image display unit has a connecting member for connecting and fixing the image display unit to the headband unit,
The headband portion includes an elastically deformable headband in which a thin plate having a first width extends in an arc shape along a head circumference direction from the back to the both sides of the head, and the image on at least one side of the headband. A connection receiving portion to which the connection member of the display unit is connected,
The headband has fixing portions at both ends and the back of the head,
Each of the fixing parts at both ends has a second width larger than the first width and abuts on the outer orbital position of the left and right cheekbones of the user, A head-mounted image display device, wherein the headband portion is held on a user's head via the three fixing portions that are in contact with the back of the head and the contacted three fixing portions. Each of the fixing portions at both ends of the headband has a predetermined plane portion,
2. The head-mounted image display device according to claim 1, wherein lower side portions of both end portions of the headband corresponding to the respective flat portions are expanded downward to have the second width.   The headband portion is disposed at a position where each fixing portion of both end portions of the headband comes into contact with the temple of the glasses when the user wears the glasses. Head-mounted image display device.   The flat portions of the fixing portions at both ends of the headband are arranged in the headband direction of the headband across the first pair of opposite sides along the headband direction of the headband and the extended lower side portion. The head-mounted image display device according to claim 2, wherein the head-mounted image display device is a plane composed of a second set of opposite sides.   The image display unit is connected and fixed to the desired position separated from either one of the fixing parts at both ends of the headband in the direction of the fixing part of the occipital region via the connection receiving part. The head-mounted image display device according to claim 1.

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