JP5147623B2 - Head-mounted image display device - Google Patents

Description

  The present invention relates to a head-mounted image display device.

  As a conventional head-mounted image display device, for example, a device that can be worn by a mobile device such as a headset type or an eyeglass type has been proposed (for example, see Patent Documents 1 and 2).

  FIG. 9 is a diagram illustrating a schematic configuration of a conventionally proposed headset-type head mounted image display device, where (a) is a front view, (b) is a side view, and (c) is a plan view. . This head-mounted image display device 100 is of the left eye type, and is a headset-type head support unit 101 held in the left ear of the observer M, and the head support unit 101 has a relay unit 102 and a holding unit. And a rod-shaped light guide unit 104 which is connected via the unit 103 and is held in the left eye visual field of the observer M. The rod-shaped light guide unit 104 includes an eyepiece optical unit 105 provided at the end opposite to the holding unit 103 side. The head support unit 101, the relay unit 102, or the holding unit 103 incorporates a display element (not shown) such as a liquid crystal display element or an organic EL element that displays an image to be observed. The image light of the displayed image is emitted from the eyepiece optical unit 105 through the rod-shaped light guide unit 104. In addition, this structure is good also as a right eye type by comprising right-and-left reverse.

  The head-mounted image display device 100 shown in FIG. 9 moves the head support unit 101 to the left of the observer M so that the image light emitted from the eyepiece optical unit 105 enters the left eye pupil of the observer M. An enlarged virtual image of an image displayed on a display element (not shown) can be observed by holding it in the ear and looking into the eyepiece optical unit 105 in that state.

  FIG. 10 is a perspective view showing a schematic configuration of a conventionally proposed glasses-type head-mounted image display device. This head-mounted image display device 110 is a right-eye type that is integrated with spectacles, and the spectacles for the right eye in the visual field of the observer's right eye through a spectacle frame 111 via a support part 112 and a holding part 113. It has a rod-shaped light guide 115 that is held near the front of the lens 114. The rod-shaped light guide unit 115 has an eyepiece optical unit 116 provided at an end opposite to the holding unit 113 side. The spectacle frame 111 or the support unit 112 or the holding unit 113 incorporates a display element (not shown) such as a liquid crystal display element or an organic EL element that displays an image to be observed, and is displayed on the display element. The image light of the obtained image is emitted from the eyepiece optical unit 116 through the rod-shaped light guide unit 115.

  In the head-mounted image display device 110 shown in FIG. 10, the image light emitted from the eyepiece optical unit 116 enters the right eye pupil through the eyeglass lens 114 when the observer puts on the eyeglass frame 111. ing. Therefore, the observer can observe an enlarged virtual image of an image displayed on a display element (not shown) by wearing the eyeglass frame 111 and looking through the eyepiece optical unit 116.

  As an eyeglass-type head-mounted image display apparatus, an apparatus that can be attached to and detached from normal eyeglasses and used in the same manner as in FIG. 10 has been proposed.

Japanese translation of PCT publication No. 2003-502713 JP 2006-3879 A

  By the way, the above-described headset-type or eyeglass-type head-mounted image display device is disclosed, for example, in Patent Document 2 as the rod-shaped light guide unit and the eyepiece optical unit positioned in the visual field of the observer are made thinner. If the width of the projection cross section in the direction of the visual axis of the observer is set to 4 mm or less based on the average pupil diameter size, the presence in the observation field of view is made inconspicuous in most usage environments. Therefore, the see-through effect of observing an image without shielding the outside is obtained.

  However, in the conventional head-mounted image display device, the rod-shaped light guide unit and the eyepiece optical unit are formed of a hard optical member made of a glass material or the like, and the holding unit of the rod-shaped light guide unit is a rigid member such as a hard plastic It consists of For this reason, when the rod-shaped light guide unit and the eyepiece optical unit positioned in the field of view are stripped, the length of the rod-shaped light guide unit extending into the field of view is relatively long, for example, 10 mm or more. We are anxious about being easily damaged by stress.

  Furthermore, in the case of the eyeglass-type head-mounted image display device 110 as shown in FIG. 10, the rod-shaped light guide unit 115 and the eyepiece optical unit 116 at the tip thereof come into contact with the spectacle lens 114, and the spectacle lens. There is also concern about damaging 114 and the eyepiece optical unit 116. As a spectacle-type head-mounted image display device, for example, the rod-shaped light guide 115 and the eyepiece optical unit 116 shown in FIG. 10 may be embedded in the spectacle lens 114. However, in this case, the spectacle lens 114 needs to be processed, and there is a concern that the cost increases. In addition, it is difficult to adjust the display position and the display angle of the embedded portion, and since it is impossible to remove and use only the image display device portion when not in use, there is a concern that the usability may deteriorate.

  Therefore, the main object of the present invention made in view of such points is to effectively prevent damage to the rod-shaped light guide that guides image light, and to easily strip the rod-shaped light guide. It is to provide a display device.

The invention of the head-mounted image display device according to claim 1, which achieves the above object,
A rod-like shape in which one end is held by a holding part and an eyepiece optical part is provided at the other end so as to extend within the field of view of one eyeball of the observer in a state of being mounted on the head of the observer A light guide unit and a display element for displaying an image, and image light of the image displayed on the display element from the end surface of the one end portion of the rod-shaped light guide unit through the end surface of the other end portion; In a head-mounted image display device that is emitted from an eyepiece optical unit and incident on the one eyeball of the observer,
The rod-shaped light guide part is elastically displaceable to the holding part, a part including the incident end face of the image light in the holding part is made of a hard optical member, and the remaining part is made of an elastic optical member,
The eyepiece optical unit reflects the image light emitted from the end surface of the other end of the rod-shaped light guide unit, and the image light reflected by the reflection surface to the one eyeball of the observer And a lens portion that emits light so as to be incident, the reflecting surface and the lens portion being made of a hard optical member, and the remaining portion being made of an elastic optical member .
Furthermore, the invention of the head-mounted image display device according to claim 2 that achieves the above-described object,
A rod-like shape in which one end is held by a holding part and an eyepiece optical part is provided at the other end so as to extend within the field of view of one eyeball of the observer in a state of being mounted on the head of the observer A light guide unit and a display element for displaying an image, and image light of the image displayed on the display element from the end surface of the one end portion of the rod-shaped light guide unit through the end surface of the other end portion; In a head-mounted image display device that is emitted from an eyepiece optical unit and incident on the one eyeball of the observer,
The rod-shaped light guide part is elastically displaceable to the holding part, at least a part thereof is made of an elastic optical member,
One end portion is connected to the holding portion on the outer surface of the rod-shaped light guide portion on the side farther from the one eyeball of the observer, and a thin hard member extending in the length direction is provided. It is characterized by.

The invention according to claim 3 is the head-mounted image display device according to claim 2 ,
The rod-shaped light guide portion is made of an elastic optical member.

The invention according to claim 4 is the head-mounted image display device according to claim 2 ,
The rod-shaped light guide unit includes an elastic optical member, and a portion including the one end portion held by the holding portion and a part exposed from the holding portion continuously from the one end portion. It consists of a hard optical member.

The invention according to claim 5 is the head-mounted image display device according to claim 2 ,
The rod-shaped light guide part includes a part including the incident end face of the image light in the holding part made of a hard optical member, and the remaining part is made of an elastic optical member.
The eyepiece optical unit reflects the image light emitted from the end surface of the other end of the rod-shaped light guide unit, and the image light reflected by the reflection surface to the one eyeball of the observer And a lens portion that emits light so as to be incident, the reflecting surface and the lens portion being made of a hard optical member, and the remaining portion being made of an elastic optical member.

The invention according to claim 6 is the head-mounted image display device according to claim 2 ,
The rod-shaped light guide part is composed of a hard optical member and an elastic optical member interposed between the hard optical member at a portion exposed from the holding part.

The invention according to claim 7 is the head-mounted image display device according to claim 2 ,
Each of the rod-shaped light guide unit and the eyepiece optical unit is made of an elastic optical member.

The invention according to claim 8 is the head-mounted image display device according to claim 1,
The holding part is characterized in that at least a part for holding one end of the rod-shaped light guide part is made of an elastic member.

The invention according to claim 9 is the head-mounted image display device according to any one of claims 1 to 8,
The holding unit is supported by a spectacle frame that holds a spectacle lens;
The rod-shaped light guide unit is held by the holding unit so as to extend in the field of view of one eyeball of the observer outside the spectacle lens.

  According to the present invention, since the displacement of the rod-shaped light guide that guides the image light can be absorbed by the elastic optical member or the elastic member, the rod-shaped light guide can be effectively prevented from being damaged, and the rod-shaped light guide is inconspicuous. It becomes possible to make it easy to strip.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiment described below, the elastic optical member is made of an elastomer such as a transparent rubber or a thermoplastic elastomer having high rubber elasticity near room temperature, such as silicone rubber (refractive index 1.404), fluoro rubber ( Refractive index 1.38-1.39), acrylic rubber (refractive index 1.465), ethylene / propylene rubber (refractive index 1.48), styrene / butadiene rubber (refractive index 1.535), etc. can do. The hard optical member can be formed of a material having a known rigidity such as a glass material or a hard plastic material.

(First embodiment)
FIG. 1 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the first embodiment of the present invention. This head-mounted image display device 10 is a headset-type right-eye type, and like the head-mounted image display device 100 shown in FIG. A relay portion 11 extending from a head support portion (not shown) of the head, a rod-shaped light guide portion 13 having one end portion held by the relay portion 11 via a holding portion 12, and other portions of the rod-shaped light guide portion 13. And an eyepiece optical unit 14 provided at the end. The eyepiece optical unit 14 observes the light emitted from the end surface of the rod-shaped light guide unit 13 as a virtual image and the prism unit 15 having a reflection surface 15a that reflects the light to the viewer's eyeball side. And a lens portion 16 for enabling. Further, a display element 17 made of a liquid crystal display element, an organic EL display element, or the like is disposed on the holding unit 12 so as to face the end surface of the rod-shaped light guide unit 13.

  In the present embodiment, the entire rod-shaped light guide unit 13 is formed by the elastic optical member 18, and the entire eyepiece optical unit 14 is similarly formed by the elastic optical member 19. The elastic optical member 18 constituting the rod-shaped light guide unit 13 and the elastic optical member 19 constituting the eyepiece optical unit 14 may be formed integrally or may be formed separately and bonded. . In the eyepiece optical unit 14, the prism unit 15 and the lens unit 16 may be integrally formed by an elastic optical member, or may be formed separately and bonded.

  Thus, in the head-mounted image display device 10 according to the present embodiment, the image light of the image displayed on the display element 17 passes through the rod-shaped light guide unit 13 including the elastic optical member 18 and is similarly elastically optical. The light is emitted from the eyepiece optical unit 14 composed of the member 19 so that the observer wearing the head-mounted image display device 10 can observe the enlarged virtual image.

  According to the head-mounted image display device 10 according to the present embodiment, since the rod-shaped light guide unit 13 is configured by the elastic optical member 18, when the stress is applied to the rod-shaped light guide unit 13, the rod-shaped light guide unit 13 is configured. The portion 13 can be elastically deformed to absorb the displacement. Therefore, breakage of the rod-shaped light guide portion 13 can be effectively prevented, and the rod-shaped light guide portion 13 can be easily stripped to 4 mm or less capable of see-through. Further, the eyepiece optical unit 14 is also composed of the elastic optical member 19, whereby damage to the eyepiece optical unit 14 due to contact or the like can be prevented, and stress on the rod-shaped light guide unit 13 is absorbed, so that the rod-shaped light guide unit 13 breakage can be prevented more effectively.

(Second Embodiment)
FIG. 2 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the second embodiment of the present invention. This head-mounted image display device 20 is the same as the head-mounted image display device 10 shown in FIG. 1 except that the rod-shaped light guide unit 13 is connected to one end portion held by the holding unit 12 and the one end portion. The portion including the part exposed from the holding portion 12 is formed by the elastic optical member 21, and the remaining portion is formed by the hard optical member 22, and both are bonded to each other. The eyepiece optical unit 14 is formed of a hard optical member 23 and is bonded to the rod-shaped light guide unit 13. In addition, the prism part 15 and the lens part 16 of the eyepiece optical part 14 may be integrally formed by the hard optical member 23, or may be formed separately and bonded. Other configurations are the same as those in FIG.

  According to the head-mounted image display device 20 according to the present embodiment, when a stress acts on the rod-shaped light guide unit 13, the elastic optical member 21 can be elastically deformed to absorb the displacement. Therefore, as in the case of the first embodiment, the rod-shaped light guide 13 can be effectively prevented from being damaged, and the rod-shaped light guide 13 can be easily stripped to 4 mm or less capable of see-through. it can.

(Third embodiment)
FIG. 3 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the third embodiment of the present invention. This head-mounted image display device 30 is the same as the head-mounted image display device 10 shown in FIG. 1 except that the rod-shaped light guide unit 13 includes a part of the holding unit 12 including the incident end surface of image light as a hard optical device. The member 31 is formed, and the remaining portion is formed by the elastic optical member 32, and both are bonded. In the eyepiece optical unit 14, the reflecting surface 15 a and the lens unit 16 of the prism unit 15 are formed by the hard optical members 33 and 34, and the rest are formed by the elastic optical member 35. That is, the eyepiece optical unit 14 is formed by adhering the rigid optical member 33 constituting the reflecting surface 15 a and the rigid optical member 34 constituting the lens unit 16 to the elastic optical member 35. In addition, the elastic optical member 35 which comprises the reflection part 15 may be formed integrally with the elastic optical member 32 which comprises the rod-shaped light guide part 13, and may be formed separately and adhere | attached. Other configurations are the same as those in FIG.

  Also in the head-mounted image display device 30 according to the present embodiment, when a stress is applied to the rod-shaped light guide unit 13, the elastic optical member 32 is elastically deformed and absorbs the displacement. Similarly to the case, breakage of the rod-shaped light guide 13 can be effectively prevented, and the rod-shaped light guide 13 can be easily stripped. Further, in the present embodiment, the incident end portion of the image light of the rod-shaped light guide portion 13 is formed by the hard optical member 31, and the reflecting surface 15a and the lens portion 16 of the eyepiece optical portion 14 are respectively replaced by the hard optical member 33 and Therefore, the optical characteristics of the display device can be kept better.

(Fourth embodiment)
FIG. 4 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the fourth embodiment of the present invention. This head-mounted image display device 40 is similar to the head-mounted image display device 10 shown in FIG. 1 except that the rod-shaped light guide unit 13 is exposed from the hard optical member 41 and the holding unit 12 and is hard optical. The eyepiece optical unit 14 is formed of a hard optical member 43 as a whole. The elastic optical member 42 is interposed so as to be sandwiched between the members 41. The eyepiece optical unit 14 may be formed integrally with the hard optical member 41 constituting the emission end of the rod-shaped light guide unit 13, or may be formed separately and bonded. Other configurations are the same as those in FIG.

  Also in the head-mounted image display device 40 according to the present embodiment, the elastic optical member 42 is elastically deformed and absorbs the displacement when a stress is applied to the rod-shaped light guide unit 13, so that in the above-described embodiment. Similarly to the case, breakage of the rod-shaped light guide 13 can be effectively prevented, and the rod-shaped light guide 13 can be easily stripped. In the present embodiment, only the intermediate portion of the rod-shaped light guide portion 13 is formed by the elastic optical member 42, and the other portions of the rod-shaped light guide portion 13 and the eyepiece optical portion 14 are formed by the hard optical members 41 and 43. Since it is formed, the optical characteristics as a display device can be kept better than in the case of FIG.

(Fifth embodiment)
FIG. 5 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the fifth embodiment of the present invention. This head-mounted image display device 50 is the same as the head-mounted image display device 10 shown in FIG. 1, on the outer surface of the rod-shaped light guide unit 13 made of the elastic optical member 18 on the side far from the observer's eyeball. One end portion is connected to the holding portion 12, and a thin hard member 51 made of hard plastic, wire or the like extending in the length direction is provided. In addition, the width | variety of the hard member 51 of a strip shall be below the width of the rod-shaped light guide part 13 (for example, 4 mm or less). Other configurations are the same as those in FIG.

  If comprised in this way, in addition to the effect demonstrated in 1st Embodiment, since the bending etc. of the rod-shaped light guide part 13 which consists of the elastic optical member 18 can be prevented by the hard member 51 of a strip, especially rod-shaped. When the light guide 13 is long, it is effective in preventing deterioration of optical characteristics due to bending.

(Sixth embodiment)
FIG. 6 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the sixth embodiment of the present invention. This head-mounted image display device 60 is the same as the head-mounted image display device 10 shown in FIG. 1, but the rod-shaped light guide unit 13 and the eyepiece optical unit 14 are formed and held by hard optical members 61 and 62, respectively. The part 12 is formed of an elastic member 63 at least a part for holding one end of the rod-shaped light guide part 13, in this embodiment, the whole holding part 12. Here, since the elastic member 63 does not need to have an optical characteristic, it can be formed of an arbitrary elastic material. Other configurations are the same as those in FIG.

  According to the head-mounted image display device 60 according to the present embodiment, when a stress acts on the rod-shaped light guide unit 13, the elastic member 63 of the holding unit 12 is elastically deformed and the rod-shaped light guide unit 13 is displaced. As in the case of the above embodiment, breakage of the rod-shaped light guide portion 13 can be effectively prevented, and the rod-shaped light guide portion 13 can be easily stripped. Moreover, since the rod-shaped light guide unit 13 and the eyepiece optical unit 14 are made of the hard optical members 61 and 62, respectively, the optical characteristics as a display device can be kept good.

(Seventh embodiment)
FIG. 7 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the seventh embodiment of the present invention. The head-mounted image display device 70 is of the right-eye type integrated with the glasses shown in FIG. 10, and in the right-eye field of the observer via the support unit 72 and the holding unit 73 on the spectacle frame 71. , A rod-shaped light guide 75 having one end held close to the front of the right eyeglass lens 74 and an eyepiece optical unit 76 provided at the other end of the rod-shaped light guide 75. The eyepiece optical unit 76, like the eyepiece optical unit 14 shown in FIG. 1 to FIG. 6, has a reflecting surface 77a that reflects the light emitted from the end face of the rod-shaped light guide 75 to the viewer's eyeball side. 77 and a lens part 78 for observing the light emitted from the prism part 77 as a virtual image. In addition, a display element 79 made of a liquid crystal display element, an organic EL display element, or the like is disposed on the holding unit 73 so as to face the end surface of the rod-shaped light guide unit 75.

  In the present embodiment, the elastic member 85 is interposed between the rod-shaped light guide 75 and the spectacle lens 74 adjacent to the rod-shaped light guide 75 to absorb the displacement of the rod-shaped light guide 75. The width of the elastic member 85 is set to be equal to or smaller than the width of the rod-shaped light guide portion 75 (for example, 4 mm or less), so that see-through is possible. Here, since the elastic member 85 does not necessarily have optical characteristics, the elastic member 85 can be formed of any elastic material. However, the elastic member 85 is preferably formed of a transparent elastic material and may not be noticeable.

  According to the head-mounted image display device 70 according to the present embodiment, when a stress is applied to the rod-shaped light guide 75, the elastic member 85 is elastically deformed and the displacement is absorbed. Similarly to the case, the rod-shaped light guide 75 can be effectively prevented from being damaged, and the rod-shaped light guide 75 can be easily stripped. Further, since the elastic member 85 absorbs the displacement of the rod-shaped light guide portion 75, the eyepiece optical portion 76 can be prevented from coming into contact with the eyeglass lens 74, so that the eyeglass lens 74 and the eyepiece optical portion 76 can be effectively damaged. Can be prevented.

(Eighth embodiment)
FIG. 8 is a schematic cross-sectional view showing the configuration of the main part of the head-mounted image display device according to the eighth embodiment of the present invention. This head-mounted image display device 80 extends from the prism portion 77 of the eyepiece optical unit 76 to the peripheral portion of the eyeglass lens 74 in the eyeglass-integrated head-mounted image display device 70 shown in FIG. An elastic member 86 is provided, and the elastic member 86 absorbs the displacement of the rod-shaped light guide portion 75. The width of the elastic member 86 is set to be equal to or smaller than the width of the rod-shaped light guide portion 75 (for example, 4 mm or less), so that see-through is possible. The elastic member 86 does not necessarily have optical characteristics, and can be formed of any elastic material. However, the elastic member 86 is preferably formed of a transparent elastic material and may not be noticeable.

  According to the present embodiment, when stress acts on the rod-shaped light guide 75, the elastic member 86 is elastically deformed and the displacement is absorbed, so that the rod-shaped light guide is similar to the above embodiment. 75 can be effectively prevented from being damaged, and the rod-shaped light guide 75 can be easily striped. Further, since the elastic member 86 absorbs the displacement of the rod-shaped light guide portion 75, the eyepiece optical portion 76 can be prevented from coming into contact with the eyeglass lens 74, so that the eyeglass lens 74 and the eyepiece optical portion 76 can be effectively damaged. Can be prevented.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, the display element is not limited to the holding portion of the rod-shaped light guide unit, and can be disposed at an arbitrary position so that image light can enter the rod-shaped light guide unit. Further, in the configuration shown in FIG. 1, FIG. 3, or FIG. 5, the entire eyepiece optical unit 14 can be formed of a hard optical member. Furthermore, the configuration shown in FIGS. 1 to 6 can also be applied to the head-mounted image display device integrated with glasses shown in FIGS. Further, the present invention can be effectively applied not only to a headset type and a glasses-integrated type, but also to a head-mounted image display device that is detachable from glasses.

It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 1st Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 2nd Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 3rd Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 4th Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 5th Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 6th Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 7th Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the principal part of the head mounted image display apparatus which concerns on 8th Embodiment of this invention. It is a figure which shows schematic structure of the headset type head mounted image display apparatus proposed conventionally. It is a perspective view which shows schematic structure of the spectacles type head mounted image display apparatus proposed conventionally.

Explanation of symbols

10, 20, 30, 40, 50, 60, 70, 80 Head-mounted image display device 11 Relay unit 12 Holding unit 13 Bar light guide unit 14 Eyepiece optical unit 15 Prism unit 15a Reflecting surface 16 Lens unit 17 Display element 18 , 19, 21, 32, 35, 42 Elastic optical member 22, 23, 31, 33, 34, 41, 43, 61, 62 Hard optical member 51 Hard member 63 Elastic member 71 Eyeglass frame 72 Support portion 73 Holding portion 74 Glasses Lens 75 Rod-shaped light guide unit 76 Eyepiece optical unit 77 Prism unit 77a Reflecting surface 78 Lens unit 79 Display element 85, 86 Elastic member

Claims (9)

A rod-like shape in which one end is held by a holding part and an eyepiece optical part is provided at the other end so as to extend within the field of view of one eyeball of the observer in a state of being mounted on the head of the observer A light guide unit and a display element for displaying an image, and image light of the image displayed on the display element from the end surface of the one end portion of the rod-shaped light guide unit through the end surface of the other end portion; In a head-mounted image display device that is emitted from an eyepiece optical unit and incident on the one eyeball of the observer,
The rod-shaped light guide part is elastically displaceable to the holding part, a part including the incident end face of the image light in the holding part is made of a hard optical member, and the remaining part is made of an elastic optical member,
The eyepiece optical unit reflects the image light emitted from the end surface of the other end of the rod-shaped light guide unit, and the image light reflected by the reflection surface to the one eyeball of the observer A head-mounted image display device comprising: a lens portion that emits light so as to be incident, wherein the reflecting surface and the lens portion are made of a hard optical member, and the remaining portion is made of an elastic optical member . A rod-like shape in which one end is held by a holding part and an eyepiece optical part is provided at the other end so as to extend within the field of view of one eyeball of the observer in a state of being mounted on the head of the observer A light guide unit and a display element for displaying an image, and image light of the image displayed on the display element from the end surface of the one end portion of the rod-shaped light guide unit through the end surface of the other end portion; In a head-mounted image display device that is emitted from an eyepiece optical unit and incident on the one eyeball of the observer,
The rod-shaped light guide part is elastically displaceable to the holding part, at least a part thereof is made of an elastic optical member,
One end portion is connected to the holding portion on the outer surface of the rod-shaped light guide portion on the side farther from the one eyeball of the observer, and a thin hard member extending in the length direction is provided. head portion mounted image display apparatus said. The head-mounted image display device according to claim 2 , wherein the rod-shaped light guide unit is made of an elastic optical member. The rod-shaped light guide unit includes an elastic optical member, and a portion including the one end portion held by the holding portion and a part exposed from the holding portion continuously from the one end portion. The head-mounted image display device according to claim 2 , comprising a hard optical member. The rod-shaped light guide part includes a part including the incident end face of the image light in the holding part made of a hard optical member, and the remaining part is made of an elastic optical member.
The eyepiece optical unit reflects the image light emitted from the end surface of the other end of the rod-shaped light guide unit, and the image light reflected by the reflection surface to the one eyeball of the observer 3. The head according to claim 2 , further comprising: a lens portion that emits light so as to be incident, wherein the reflection surface and the lens portion are made of a hard optical member, and the remaining portion is made of an elastic optical member. Wearable image display device. The rod-shaped light transmission part includes a rigid optical member, the portion exposed from the holding portion, and a resilient optical member is interposed so as to sandwich by the rigid optical element, according to claim 2, characterized in that Head-mounted image display device. The head-mounted image display device according to claim 2 , wherein each of the rod-shaped light guide unit and the eyepiece optical unit is made of an elastic optical member.   The head-mounted image display device according to claim 1, wherein at least a portion of the holding unit that holds one end of the rod-shaped light guide unit is made of an elastic member. The holding unit is supported by a spectacle frame that holds a spectacle lens;
9. The rod-shaped light guide unit is held by the holding unit so as to extend within the field of view of one eyeball of the observer outside the spectacle lens. The head-mounted image display device according to claim 1.

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