JP2009075195A - Eyeglass type image display device and eyeglasses with image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eyeglass type image display device capable of displaying an electronic image at an arbitrary position in visual field over a see-through outside image by dividing observer's pupil even if a special eyeglass lens is not used. <P>SOLUTION: At a part of at least one eyeglass lens 20R, there is formed a groove (30), in which a display bar (10) is fitted and fixed. The display bar (10) is equipped with a hollow cylinder member or a rod-shaped transparent member, and forms an optical path for guiding a display light incident on the rear end of the cylinder member or the like, in the longitudinal direction to its leading end. A reflecting member is arranged near the leading end of the cylinder member or the like, and this cylinder member is equipped at its leading end with an ocular window for projecting the display light having its optical path bent by that reflecting member, into the eye-ball of the observer. The optical path from the trailing end to the leading end of the vicinity of the ocular window or the cylinder member is equipped with an ocular optical system. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a spectacle-type image display device and spectacles with an image display device, and in particular, a spectacle-type image display device capable of displaying an electronic image superimposed on an external image see-through by pupil division of a pupil and such an image display device. It is related with the glasses which attached.

  In the patent document 1, the applicant of the present invention is a head-mounted image display that has a see-around or see-through mechanism, is small and light, has a large external field of view, low power consumption, high electronic image brightness, and is easy to use. A device (HMD) is proposed.

  In this image display device, the width of the projection cross section of the member constituting the eyepiece window holding portion in the direction of the visual axis of the user is set to 4 mm or less, and the eyepiece window holding member is made smaller than the average pupil diameter (4 mm) of humans. By making it thinner, it is possible to obtain a see-through effect without completely blocking the outside world even if the device is placed in the field of view by dividing the pupil (pupil), and without using a half mirror, Therefore, a bright electronic image can be observed.

  FIG. 1 is a perspective view of a typical eyepiece window holder 2 and FIG. 2 is a plan view thereof. The eyepiece window holding unit 2 is formed of a hollow cylindrical member having a rectangular cross section or a rod-shaped transparent member, and the display light from the display panel 3 disposed at the rear end of the cylindrical member or the transparent member is used as an optical path at the front end. The optical path is guided by the reflecting member 6 arranged at the tip, and is bent in a substantially right angle direction of the eyepiece window holding unit 2, and projected onto the eyeball through the eyepiece lens 5 arranged on the eyepiece window 4 on the side surface of the eyepiece window holding unit 2. By doing so, the observer can enlarge and observe the aerial image which is a virtual image of the display panel 3.

  FIG. 3 is a diagram showing the positional relationship between the tip of the eyepiece window holding unit 2 and the eyeball E when such an image display device is worn by an observer. The eyepiece window holding unit 2 arranged in front of the eyeball E is shown in FIG. By making the width smaller than the pupil diameter, the pupil of the eyeball E is divided into pupils, an external image is displayed through the pupil part where the eyepiece window holding unit 2 is not applied, and the eyepiece window 4 of the eyepiece window holding unit 2 is displayed through the pupil part. 3 display images are superimposed on each other.

  Instead of disposing the eyepiece lens 5 on the eyepiece window 4 on the front side surface of the eyepiece window holding section 2, as shown in FIG. 4, the eyepiece lens is disposed between the reflecting member 6 at the front end of the eyepiece window holding section 2 and the rear end. It is also possible to incorporate a refractive index distribution type lens 7 having a positive refracting power and having the function 5.

  Such an eyepiece window holding unit 2 is attached to the outside of the spectacle lens or to a lens mounting frame around the spectacle lens so that a person who uses spectacles can display an image while seeing through the outside world.

On the other hand, in Patent Document 2, a half mirror or the like that makes a line of sight of approximately 45 ° is embedded in a spectacle lens of spectacles, and display light that reaches the half mirror from the peripheral part of the spectacle lens through the optical path in the spectacle lens An eyeglass-type image display device that reflects an image in the line of sight by a mirror and projects an enlarged image of the display panel onto the observer's eyeball, and enables observation by superimposing an external image transmitted through the half mirror on the display image of the display panel Proposed.
JP 2006-3879 A US Pat. No. 5,886,822

  The thing of patent document 1 and attaching the eyepiece window holding | maintenance part 2 to the outer side of a spectacle lens leaves | separates from the eyeball E by the thickness of a spectacle lens, Therefore A viewing angle becomes small. In addition, an object attached to the lens attachment frame around the spectacle lens cannot display a display image superimposed on the see-through external image.

  Furthermore, the thickness of the eyepiece window holding part 2 needs to be 4 mm or less, and the eyepiece window holding part 2 is much harder than its length in order to display an electronic image at a position where it can be easily seen in the field of view. Thinning, weak physical strength, easy to break. It also gives a “quick” impression when viewed from a third party, leading to a sense of incongruity.

  Furthermore, when the outside world is bright, it is difficult to see the electronic image. A see-through type HMD using a half mirror can be designed to be resistant to the brightness of the outside world by changing the ratio of transmission and reflection of the half mirror. I can't.

  Moreover, since the thing of patent document 2 superimposes an external image and an electronic image using a half mirror, the utilization efficiency of the light of an electronic image falls. Furthermore, since all the half mirrors are embedded in the spectacle lens and the external image is not see-through by pupil division unlike the one described in Patent Document 1, the spectacle lens is compared with a general spectacle lens. It will be thick. Accordingly, the weight of the glasses increases. Furthermore, the fashionability decreases due to an increase in the thickness of the spectacle lens.

  Further, since the display light is allowed to pass through the spectacle lens, the front and rear surfaces of the spectacle lens cannot be curved. Therefore, it is not possible to adjust myopia or hyperopia for a spectacle lens embedded with a half mirror or the like according to the diopter of the observer's eyeball. Further, even a spectacle lens having no curvature on the front and rear surfaces has problems such as astigmatism occurring in the periphery of the field of view, and the image appearing blurred or curved.

  The present invention has been made in view of such problems of the prior art, and the object thereof is to superimpose a see-through external field image by pupil division of the observer pupil without using a special spectacle lens. An object is to provide a spectacle-type image display device capable of displaying an electronic image at an arbitrary position in the field of view in conformity with an eye width of an observer and spectacles attached with such an image display device.

  In the eyeglass-type image display device of the present invention that achieves the above object, a groove is formed in a part of at least one eyeglass lens, a display bar is inserted into the groove, and the display bar is hollow. A cylindrical member or a rod-shaped transparent member, and the cylindrical member or the transparent member forms an optical path that guides display light incident from the rear end thereof in the longitudinal direction and guides the light to the front end thereof. A reflecting member is disposed in the vicinity of the tip, and an eyepiece window for projecting display light whose optical path is bent by the reflecting member to the observer's eyeball is provided at the tip of the cylindrical member or the transparent member. An eyepiece optical system is provided in the vicinity or in an optical path from the rear end to the front end of the cylindrical member or the transparent member.

  In this case, it is desirable that the width of the projected cross section in the visual axis direction of the user of the display bar is 4 mm or less.

  The display bar may be held at least by the eyeglass lens, or may be held by the frame of the eyeglass lens.

  Further, it is desirable that the surface of the display bar on which the eyepiece window is located is held so as not to protrude from the curved surface of the eyeglass lens user.

  Alternatively, it is desirable that the surface of the display bar opposite to the side where the eyepiece window is located is held so as not to protrude from the curved surface opposite to the eye of the user of the spectacle lens.

  The groove may be formed from the outer side of the spectacle lens to the center of the spectacle lens.

  In the eyeglasses with an image display device of the present invention, a groove is formed in a part of at least one eyeglass lens, a display bar is inserted into the groove, and the display bar is a hollow cylindrical member or a rod-like member. A transparent member, and the cylindrical member or the transparent member forms an optical path that guides display light incident from the rear end thereof in the longitudinal direction and guides it to the tip thereof, and is reflected near the tip of the cylindrical member or the transparent member. A cylindrical member or a transparent member is provided with an eyepiece window for projecting display light, whose optical path is bent by the reflecting member, onto an observer's eyeball at the tip thereof, and in the vicinity of the eyepiece window or the cylindrical member Alternatively, an eyepiece optical system is provided in the optical path from the rear end to the front end of the transparent member.

  The present invention includes a frame for holding a spectacle lens, and a groove having a width of about 4 mm or less is formed in a part of at least one spectacle lens, and a display bar can be inserted into the groove. The display bar includes a hollow cylindrical member or a rod-shaped transparent member, and the cylindrical member or the transparent member forms an optical path that guides display light incident from the rear end in the longitudinal direction and guides the light to the front end. An eyepiece that projects a display light whose optical path is bent by the reflecting member on the tip of the cylindrical member or the transparent member on the observer's eyeball. A pair of eyeglasses including an eyepiece optical system in an optical path from the rear end to the tip of the tube member or the transparent member.

  According to the present invention, without using a special spectacle lens, the electronic image is adapted to an arbitrary position in the field of view by superimposing an external image seen through by pupil division of the observer pupil, and the eye width of the observer is adapted. It is possible to provide eyeglass-type image display devices that can be displayed and glasses equipped with such image display devices.

  For example, the distance between the display bar and the pupil can be shortened, and the viewing angle is increased. The entire display bar is held by the spectacle lens, and the physical strength of the display bar is increased. Further, since the entire display bar is integrated with the spectacle lens, there is little discomfort. Further, by reducing the transmittance of the spectacle lens like sunglasses, only the external image can be darkened, and the electronic image is not darkened. Therefore, it is possible to freely design a glasses-type image display device with improved visibility even in a bright environment. The spectacle lens can be of the same thickness and shape as a general spectacle lens.

  Hereinafter, the eyeglass-type image display device and the eyeglasses with the image display device of the present invention will be described based on examples.

  The eyeglass-type image display device according to the present invention integrates the eyepiece window holder 2 proposed in Patent Document 1 by cutting a groove in a spectacle lens of the eyeglass and inserting the groove into the groove. In order to describe the eyeglass-type image display device of the present invention, the eyepiece window holding unit 2 will be described again with reference to FIGS.

  FIG. 1 is a perspective view of a typical eyepiece window holder 2 and FIG. 2 is a plan view thereof. The eyepiece window holding unit 2 is formed of a hollow cylindrical member having a rectangular cross section or a transparent member having a rectangular column shape, and the display light from the display panel 3 disposed at the rear end of the cylindrical member or the transparent member is used as an optical path at the tip. The optical path is guided by the reflecting member 6 arranged at the tip, and is bent in a substantially right angle direction of the eyepiece window holding unit 2, and projected onto the eyeball through the eyepiece lens 5 arranged on the eyepiece window 4 on the side surface of the eyepiece window holding unit 2. By doing so, the observer can enlarge and observe the aerial image which is a virtual image of the display panel 3.

  FIG. 3 is a diagram showing the positional relationship between the tip of the eyepiece window holding unit 2 and the eyeball E when such an image display device is worn by an observer. The eyepiece window holding unit 2 arranged in front of the eyeball E is shown in FIG. By setting the width to 4 mm or less, which is smaller than the pupil diameter, the pupil of the eyeball E is divided into pupils, and an external image is passed through the pupil part where the eyepiece window holding part 2 does not apply, and the eyepiece part where the eyepiece window 4 of the eyepiece window holding part 2 is applied. The display images on the display panel 3 are made to overlap each other.

  Instead of disposing the eyepiece lens 5 on the eyepiece window 4 on the front side surface of the eyepiece window holding section 2, as shown in FIG. 4, the eyepiece lens is disposed between the reflecting member 6 at the front end of the eyepiece window holding section 2 and the rear end. It is also possible to incorporate a refractive index distribution type lens 7 having a positive refracting power and having the function 5.

  Here, the display panel 3 is not necessarily arranged at the rear end of the cylindrical member or the transparent member, and the display image of the display panel 3 arranged at a position away from the rear end is used as a mirror, a relay lens system, an optical fiber image guide, or the like. This optical system may transmit the secondary image to the rear end position of the cylindrical member or the transparent member.

  Therefore, in the present invention, the configuration of the eyepiece window holding unit 2 excluding the display panel 3 of FIGS. 1 and 4, that is, a hollow cylindrical member or columnar shape that forms an optical path for guiding display light from the display panel 3 in the longitudinal direction. The eyepiece window holding part 2 constituting the longitudinal direction optical path forming member having a width of 4 mm or less projected on the observer eyeball E, the reflecting member 6 disposed at the tip thereof, and the reflecting member 6 The optical path is bent in a substantially right angle direction, and includes an eyepiece window 4 for projecting display light onto the observer's eyeball E. An eyepiece optical system (eyepiece lens 5, refractive index distribution) in the vicinity of the eyepiece window 4 or in the longitudinal direction optical path forming member. In the following description, the mold lens 7) is referred to as a display bar 10.

  Now, an embodiment of the eyeglass-type image display device or eyeglasses with an image display device of the present invention will be described. FIG. 5A is a perspective view of normal myopia, hyperopia, or eyeglasses for sunglasses as seen from the front upper side. In this embodiment, the left and right eyeglass lenses 20L and 20R have no bridge 21 and left and right edges. The left and right eyeglass lenses 20L and 20R are attached to predetermined positions by the left and right frames 22L and 22R, and the left and right vines 23L and 23R extend from the left and right frames 22L and 22R in a foldable manner. According to the present invention, in one or both of the left and right eyeglass lenses 20L and 20R, in the case of FIG. 5A, a lateral groove 30 penetrating the right eyeglass lens 20R in the front-rear direction is cut from the outer end to substantially the center.

  Based on the present invention, as shown in FIG. 5B, the display bar 10 is positioned so that the eyepiece window 4 faces the eyeball of the spectacle wearer in the lateral groove 30 cut into the spectacle lens 20R. In this case, the display bar 10 is fixed integrally with the spectacle lens 20R using a transparent adhesive or the like.

  A housing 11 is integrally provided at the rear end of the display bar 10 in FIG. 5B, and the display panel 3 and its lighting device, and electrical components such as a drive circuit board of the display panel 3 are accommodated therein. It has been.

  FIG. 6 is a view similar to FIG. 5 showing a modification of the embodiment of FIG. 5. As shown in FIG. 6A, the left and right eyeglass lenses 20L and 20R are each composed of a bridge 21 and a rim (edge) 22L. Examples of spectacles attached to a predetermined position by rims 22L 'and 22R' of left and right frames 22L and 22R having ', 22R', and left and right vines 23L and 23R extending from the left and right frames 22L and 22R in a foldable manner. It is. In this case, in one or both of the left and right eyeglass lenses 20L and 20R, in the case of FIG. 6A, a lateral groove 30 penetrating back and forth in the right eyeglass lens 20R is cut from the outer end to substantially the center. A notch 30 'is also provided at the position of the rim 22R' corresponding to, and as shown in FIG. 6B, an eyepiece window 4 is formed in the eyeball of the spectacle wearer in the lateral groove 30 cut into the spectacle lens 20R. The display bar 10 is inserted while adjusting its position so as to face each other. In this case, the base of the display bar 10 or the casing 11 and the rim 22R ′ of the frame 22R at the position of the cut 30 ′ are brazed to form a spectacle lens. It is integrally fixed to the frame 22R of 20R.

  By the way, the width of the horizontal groove (not necessarily in the horizontal direction, which may be in the vertical direction or in the diagonal direction) 30 cut from the outer end of the spectacle lens 20 (20L, 20R) to the approximate center is the width of the display bar 10 (FIG. 3). ) Or a slightly wider width. Since the width of the display bar 10 is preferably 4 mm or less, as shown in FIG. 7A, the width of the lateral groove 30 provided in the spectacle lens 20 (20L, 20R) is also 4 mm or less or slightly over 4 mm (about 4 mm or less). It is preferable that Then, as shown in FIG. 7B, the display bar 10 inserted into the lateral groove 30 can be rotated and fixed around its axis so that the display light emitted from the eyepiece window 4 of the display bar 10 Enter the pupil of E.

  This is shown in FIGS. 8 (a) and 8 (b). That is, as shown in FIG. 8A, for example, the lateral groove 30 is provided below the spectacle lens 20, and the eyepiece window of the display bar 10 is simply inserted by inserting the display bar 10 along the lens surface of the spectacle lens 20. The display light emitted from 4 does not go to the pupil of the observer eyeball E located behind the substantial center of the spectacle lens 20, and the electronic image from the display bar 10 cannot be observed even if the eyeball E is rotated. Therefore, when the optical bar is attached and fixed to the spectacle lens 20, the optical inserter inserts the display bar 10 into the lateral groove 30 and adjusts the rotation of the display bar 10 about its axis as shown in FIG. Then, the display light emitted from the eyepiece window 4 is directed to the pupil of the eyeball E of the wearer and is fixed to the spectacle lens 20 (FIG. 5) or fixed to the frame of the spectacle lens 20 (FIG. 6). ). By adjusting in this way, the electronic images appear to overlap within the visual field of the eyeball E.

  In addition, as shown in FIG.8 (c), the cross-section of the horizontal groove 30 provided in the spectacle lens 20 makes the diagonal of the cross section of the display bar 10 a substantially diameter so that such rotation adjustment of the display bar 10 is possible. A circular cross section may be a circular groove.

  Furthermore, when the observer's eyeball E with respect to the spectacle lens 20 is known in advance, as shown in FIG. 8D, the lateral groove 30 provided in the spectacle lens 20 extends from the eyepiece window 4 of the display bar 10 inserted therein. It is good also as a groove | channel which becomes a cross-sectional parallelogram of the predetermined apex angle from which the emitted display light goes to the rotation center of the eyeball E known beforehand.

  As shown in FIG. 9, the spectacle lens 20 (20 </ b> L, 20 </ b> R) generally includes front and rear curved surfaces 31, 32, but the surface on the side where the eyepiece window 4 of the display bar 10 to be inserted into the lateral groove 30 is located and the spectacles. The display bar 10 does not protrude from the rear curved surface 32 by substantially matching the rear curved surface 32 of the lens 20 (FIG. 9A), so that the edge of the display bar 10 collides with the observer's eyeball E. Thus, the eyeball E can be prevented from being damaged, and the eyepiece window 4 of the display bar 10 is closer to the observer eyeball E, so that the viewing angle of the electronic image display becomes larger. Conversely, the surface of the display bar 10 to be inserted into the lateral groove 30 opposite to the side where the eyepiece window 4 is located and the curved surface 31 on the front side of the eyeglass lens 20 substantially coincide so that the display bar 10 does not protrude from the curved surface 31 on the front side. By doing so (FIG. 9B), there is no protrusion from the spectacle lens 20 in appearance, and the appearance shape is not impaired.

Next, a method for dealing with the difference in the eye width of the user of the eyeglass-type image display device of the present invention will be described. FIGS. 10A, 10B, and 10C are plan views of the right spectacle lens 20R portion to which the display bar 10 is attached, and FIG. 10A shows the standard eye width of the observer (user). 10B shows the position of the right eyeball E ₀ , FIG. 10B shows the position of the right eyeball E ₁ when the eye width of the observer (user) is narrower than the standard case, and FIG. The right eyeball E ₂ position when the eye width of the user) is wider than the standard case is shown, and in FIGS. 10B and 10C, the standard eyeball position is shown by a broken line. When the position of the eyeball is different in the horizontal direction, the display light emitted from the eyepiece window 4 of the display bar 10 inserted into the lateral groove 30 is displayed so as to go to the center of rotation of the eyeballs E ₀ , E ₁ , E _{2 at} the different positions. The mounting angle of the bar 10 in the horizontal groove 30 in the horizontal plane is adjusted as shown in FIGS. 10A, 10B and 10C, and the display bar 10 is fixed to the spectacle lens 20R or the frame 22R. In this case, by preventing all surfaces on the side where the eyepiece window 4 of the display bar 10 to be inserted into the lateral groove 30 is located from protruding from the curved surface 32 on the rear side of the spectacle lens 20, the edge of the display bar 10 is displayed. However, it is possible to prevent the eyeball E from being damaged by the collision of the observer eyeball E. On the contrary, the spectacle lens 20 in terms of appearance is prevented by preventing all the surfaces of the display bar 10 opposite to the side where the eyepiece window 4 is located from protruding from the curved surface 31 on the front side of the spectacle lens 20. There is no protrusion from the outer shape, and the appearance shape is not impaired.

  By the way, in the above embodiment, the lateral groove (not necessarily in the lateral direction, as described above, may be in the longitudinal direction or the oblique direction) 30 is cut from the outer end of the spectacle lens 20 (20L, 20R) to approximately the center. However, it is not always necessary to communicate with the outer end of the spectacle lens 20. FIG. 11 is a view showing an embodiment in the case where the lateral groove 30 penetrating in the front-rear direction is provided in a closed state in the spectacle lens 20R. FIG. 11A is a view of the right eyeglass lens 20R as viewed from the user's eye side, and a lateral groove 30 is formed at a position slightly lower right than the center of the right eyeglass lens 20R. As shown in FIG. 11B, a portion near the tip of the display bar 10 is inserted into the closed lateral groove 30 and fixed by an appropriate means such as an adhesive. And the housing | casing 11 is fixed to the edge part of the spectacle lens 20R with the display bar 10, as shown in FIG.11 (c). While glasses such as sunglasses place importance on fashionability, they may not have a diopter correction function for users. In such cases, a lens with a large curvature is used because the degree of freedom of lens shape is large. Sometimes. When the curvature of the spectacle lens 20R is large, it may be better not to extend the lateral groove 30 to the outside of the spectacle lens 20R.

  In the above description, the spectacle lenses 20, 20L, 20R are not limited to flat surfaces and the rear surface 32 may be any surface as long as it has a curved surface, such as a myopic lens, a hyperopic lens, a progressive spectacle lens, and sunglasses. Any of these may be used. The spectacle lenses 20, 20L, and 20R may have zero refractive power (powerless). Further, the lateral groove 30 does not necessarily need to penetrate from the front surface 31 to the rear surface 32. In particular, when the spectacle lens 20 is thick, it does not need to penetrate from the front surface 31 to the rear surface 32.

  The eyeglass-type image display device and the eyeglasses with an image display device of the present invention have been described above based on the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made.

It is a perspective view of a typical display bar used in the present invention. It is a top view of the display bar of FIG. It is a figure which shows the positional relationship of a display bar front-end | tip part and eyeball when an observer wears the display bar of FIG. It is a perspective view of the modification of the display bar used by this invention. It is the perspective view before the assembly of the spectacles type image display device by the present invention, and after the assembly. FIG. 6 is a view similar to FIG. 5 showing a modification of the embodiment of FIG. 5. It is a figure for demonstrating the width | variety of the horizontal groove cut into a spectacles lens, and rotation adjustment fixation of the display bar inserted in the horizontal groove. It is a figure for demonstrating the necessity of the rotation adjustment of the display bar in the horizontal groove provided in the spectacle lens, and how to adjust. It is a figure for demonstrating that the display bar arrange | positioned in the horizontal groove provided in the spectacle lens does not protrude from the back side and the front surface. It is a figure for demonstrating the method to respond | correspond to the difference of the eye width of the user of the spectacles type image display apparatus of this invention. It is a figure which shows the Example when the horizontal groove provided in the spectacle lens is provided in the state closed in the spectacle lens.

Explanation of symbols

E ... Eyeballs E ₀ , E ₁ , E ₂ ... Different eyeball positions 2 ... Eyepiece window holder 3 ... Display panel 4 ... Eyepiece window 5 ... Eyepiece lens 6 ... Reflective member 7 ... Refractive index distribution lens 10 ... Display bar 11 ... Case 20, 20L, 20R ... Eyeglass lens 21 ... Bridge 22L, 22R ... Frame 22L ', 22R' ... Rims 23L, 23R ... Vine 30 ... Cross groove 30 '... Cut 31 ... Front face of eyeglass lens 32 ... Rear face of eyeglass lens

Claims (9)

A groove is formed in a part of at least one spectacle lens, and a display bar is inserted into the groove, and the display bar includes a hollow cylindrical member or a rod-shaped transparent member, and the cylindrical member or The transparent member forms an optical path that guides display light incident from the rear end in the longitudinal direction and guides the display light to the front end thereof, a reflecting member is disposed in the vicinity of the front end of the cylindrical member or the transparent member, and the cylindrical member Alternatively, the front end of the transparent member is provided with an eyepiece window for projecting display light whose optical path is bent by the reflecting member onto the observer's eyeball, and reaches from the vicinity of the eyepiece window or from the rear end of the cylindrical member or the transparent member to the front end. An eyeglass-type image display device comprising an eyepiece optical system in an optical path. The head-mounted image display device according to claim 1, wherein a width of a projection cross section of the display bar in the visual axis direction of the user is 4 mm or less. The head-mounted image display device according to claim 1, wherein the display bar is held by at least the eyeglass lens. 3. The head mounted image display device according to claim 1, wherein the display bar is held by a frame of the spectacle lens. The surface on the side where the eyepiece window of the display bar is located is held so as not to protrude from the curved surface on the eye side of the user of the eyeglass lens. Head-mounted image display device. The surface of the display bar opposite to the side where the eyepiece window is located is held so as not to protrude from the curved surface opposite to the eye of the user of the spectacle lens. A head-mounted image display device according to claim 1. The head-mounted image display device according to claim 1, wherein the groove is formed from the outside of the spectacle lens to the center of the spectacle lens. A groove is formed in a part of at least one spectacle lens, and a display bar is inserted into the groove, and the display bar includes a hollow cylindrical member or a rod-shaped transparent member, and the cylindrical member or The transparent member forms an optical path that guides display light incident from the rear end in the longitudinal direction and guides the display light to the front end thereof, a reflecting member is disposed in the vicinity of the front end of the cylindrical member or the transparent member, and the cylindrical member Alternatively, the transparent member includes an eyepiece window that projects display light, whose optical path is bent by the reflecting member, onto the observer's eyeball at the tip, and extends from the vicinity of the eyepiece window or from the rear end of the cylindrical member or the transparent member to the tip. Eyeglasses with an image display device, comprising an eyepiece optical system in an optical path. A frame for holding a spectacle lens is provided, and a groove having a width of about 4 mm or less is formed in a part of at least one spectacle lens, and a display bar can be inserted into the groove. A hollow cylindrical member or a rod-shaped transparent member, and the cylindrical member or the transparent member forms an optical path that guides display light incident from the rear end in the longitudinal direction and guides the light to the front end. A reflective member is disposed in the vicinity of the distal end of the transparent member, and the cylindrical member or the transparent member includes an eyepiece window that projects display light, whose optical path is bent by the reflective member, onto the observer's eyeball at the distal end thereof. Eyeglasses comprising an eyepiece optical system in the vicinity of the eyepiece window or in an optical path from the rear end to the front end of the cylindrical member or transparent member.

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