JP2014235358A - Virtual image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a virtual image display device capable of stably mounting a virtual display device regardless of a face width of a wearer and preventing a fastening at the mounting time of the virtual display device from becoming tight.SOLUTION: An adjustment pad 109a as an adjustment member provided for a support device 102 is configured to adjust a restriction for an opening angle of a pair of temple parts 104 so that the opening angle of the pair of temple parts 104 can be adjusted according to a face width of an observer or a wearer. Specifically, with the adjustment pad 109a changed to a pad having a different thickness and the like, a state in which the face is sandwiched by the pair of temple parts 104 according to wideness and narrowness of the face width of an observer or a wearer can be adjusted. As a result, a wearing state of a virtual display device 100 can be stabilized, and a fastening by the pair of temple parts 104 can be prevented from becoming tight and the mounting thereof can be prevented from being felt narrow.

Description

  The present invention relates to a virtual image display device and a projector that present an image formed by a video display element to an observer, and more particularly to a virtual image display device suitable for a head-mounted display that is mounted on the observer's head.

  Various types of virtual image display devices such as a head mounted display (hereinafter also referred to as HMD) to be mounted on the observer's head have been proposed (see, for example, Patent Document 1).

  As for a virtual image display device such as an HMD, it is desired to achieve a wide angle of view without degrading image quality while progressing downsizing and weight reduction. Further, if the entire field of view of the observer is covered and only the image light can be seen, the state of the outside world is not known to the observer and anxiety is given. Rather, a new use like virtual reality is created by creating a see-through that allows you to see the image superimposed on the outside world. For this reason, there is a demand for a display that displays video light in an overlapping manner without obstructing the visual field of the outside world.

  In consideration of the above situation, by using a see-through light guide device that is placed in front of the viewer's eyes, the viewer's wearing feeling is improved close to the shape of the glasses and the appearance is improved. be able to. In this case, with respect to the optical system for visually recognizing the image, for example, there is an aspect in which the image light formed by the liquid crystal display panel and the projection optical device arranged on the side surface of the head is guided to the front of the eyes with a perspective prism. Possible (see Patent Document 1).

  In the case of the virtual image display device disclosed in Patent Document 1, the temple is fixed to a cover, which is a storage member, via a hinge, the rotation angle to the outside of the temple is regulated by the contact portion, and the temple is moved inward by the biasing member. Giving power to return. For this reason, when the wearer of the virtual image display device has a small face and a narrow face width, the biasing force on the temple is weakened, and the holding state of the virtual image display device tends to become unstable due to loose clamping between the pair of temples. When the face width of the wearer of the apparatus is wide, the urging force against the temple is increased, and it becomes easy to feel tightly tightened by the temple when the virtual image display apparatus is worn.

JP 2012-163640 A

  The present invention has been made in view of the above-described background art, and can stably attach a virtual image display device regardless of the width of the face of the wearer, and tightening of the virtual image display device can be tightened. An object of the present invention is to provide a virtual image display device capable of preventing the above.

  In order to achieve the above object, a virtual image display device according to the present invention includes an image forming unit including an image element, an optical member that visually recognizes an image by directing light from the image element toward an observer's eye, and the optical member includes: A support device that supports at least a part of the image forming unit so as to be arranged in front of the eyes of the observer, and the support device extends from the frame unit and is pivotally supported at both ends of the frame unit. A pair of temple portions, and an adjustment member that is provided at each of the connecting portions between the frame portion and the pair of temple portions and adjusts the restriction on the opening angle of the pair of temple portions. Here, regarding the arrangement of the image forming unit, the front side of the eye includes not only the front direction of the eye but also includes the case where the image forming unit is shifted in the upward, downward, oblique directions, etc. with reference to the front of the eye. And

  In the virtual image display device, since the adjustment member provided in the support device adjusts the restriction on the opening angle of the pair of temple portions, the opening angle of the pair of temple portions can be adjusted according to the width of the face of the observer or the wearer. . In other words, it is possible to adjust the state of sandwiching the face by a pair of temple parts according to the width of the face of the observer or wearer, so the wearing state such as the tension, tightness, and adhesion of the temple parts can be adjusted to some extent. can do. As a result, for example, the mounting state of the virtual image display device can be stabilized, and the tightening by the pair of temple portions can be prevented and the mounting can be prevented from being felt tight.

  In a specific aspect of the present invention, in the virtual image display device, the pair of temples are pivotally supported at both ends of the frame portion and can be folded. In this case, the adjustability of the support member and the virtual image display device when carrying the portable device can be improved while improving the adhesiveness regardless of the individual difference of the wearer.

  In another aspect of the present invention, the frame portion is a U-shaped member that surrounds the frontal region and the frontal region of the temporal region, and the pair of temples are supported at the distal ends of the U-shaped member. . In this case, the portion of the U-shaped member that is disposed on the frontal side of the temporal region is integrated, so that the support of the image forming unit is stabilized and the protection of the image forming unit is ensured.

  In yet another aspect of the invention, the adjustment member includes a replaceable member. In this case, a complicated mechanism or the like is not necessary for the adjustment member itself, and the adjustment of the angle limit can be simplified.

  In still another aspect of the present invention, the image forming apparatus further includes a storage case that stores an image element and a coupling portion that guides light from the image element to the optical member, and the adjustment member is provided along with the storage case. The extension portion is disposed on the outer side of the base portion of the temple portion and extends to the distal end side of the connection portion. In this case, the restriction on the opening angle of the temple portion can be reliably adjusted with a simple structure by preventing the base portion of the temple portion from spreading outward by the adjusting member fixed to the extension portion.

  In another aspect of the present invention, the adjustment member is housed in the extension portion so as to expose the front side portion facing the root portion. In this case, the adjustment member is protected by the extension, and the adjustment member can be prevented from affecting the appearance.

  In still another aspect of the present invention, the adjustment member is fitted into a fixing recess formed in the extension. In this case, it becomes easy to stabilize the holding of the adjusting member.

  In still another aspect of the present invention, the adjustment member includes an adjustment pad formed of an elastic body. In this case, the restriction on the opening angle can be made elastic by bringing the base portion of the temple portion into contact with the adjustment pad that is elastically deformed.

  In yet another aspect of the present invention, the adjustment pad is thinned and provided with a cavity therein. In this case, the elastic deformation of the adjustment pad can be further increased, and the range where the tightening by the pair of temple portions is gentle can be widened.

  In yet another aspect of the invention, the adjustment member is detachable from the extension for replacement. In this case, a plurality of sizes or a plurality of shapes of adjustment members are prepared in advance, and one of the adjustment members is attached to the support device with one adjustment member suitable for an observer or a wearer, so that a pair of temple portions Can be adapted to the face of the observer or wearer.

  In still another aspect of the present invention, the tip side portions of the pair of temple portions are each formed of an elastic body. In this case, the wearing feeling of the virtual image display device through the pair of temple portions can be improved by elastic deformation of the tip side portion of the temple portion.

  In still another aspect of the present invention, the adjustment member has an angle adjustment mechanism that changes the restriction on the opening angle of the pair of temple portions in a stepwise manner. In this case, the tightening state can be adjusted by the pair of temple portions without exchanging the adjusting member.

  In still another aspect of the present invention, the optical member guides the light of the image and enables the light of the outside world to be seen, and the light guide member connected to the light guide member to supplement the light seeing function of the outside world. A light transmitting member. In this case, the see-through state in which the external light and the image light are superimposed can be achieved by the integrated light guide member and light transmission member.

  In still another aspect of the present invention, a second image having a first image forming unit having an image element and an optical member, another image element similar to the image element, and another optical member similar to the optical member. And an image forming unit, and the support device supports the first and second image forming units. That is, the virtual image display device becomes a binocular type, and the first and second display devices can perform the same or different display.

It is a perspective view explaining simply the appearance of the virtual image display device concerning a 1st embodiment. (A) is an external perspective view of a virtual image display device, and (B) is a perspective view showing an internal structure in which a frame and an exterior member are removed from the virtual image display device. (A) is the elements on larger scale which expanded the connection part periphery of a frame part and a temple part, (B) is the partial expansion conceptual diagram which looked at the connection part periphery in the folded state from another direction. . (A) is a side sectional view explaining an adjustment member fixed to the periphery of a connection part, (B) is a plane sectional view explaining an adjustment member, and (C) is prepared so that exchange is possible. It is a plane sectional view explaining another adjustment member, and (D) is a plane sectional view explaining still another adjustment member prepared so that exchange is possible. It is a top view explaining adjustment of the opening angle of a pair of temple parts. (A) is a perspective view which shows the state which removed the exterior member etc. in order to demonstrate the structure of a 1st display apparatus (image formation part) among virtual image display apparatuses, (B) is integrated in a 1st display apparatus. It is side sectional drawing explaining the structure of the image display apparatus and projection lens currently shown. It is sectional drawing in the symmetry plane regarding the upper and lower sides of the 1st display apparatus (image formation part) which comprises a virtual image display apparatus. (A) And (B) is a perspective view explaining the external appearance of the light guide apparatus or optical member incorporated in the 1st display apparatus (image formation part). (A) And (B) is a disassembled perspective view explaining the fixing method to the flame | frame of a light guide member and a projection lens among virtual image display apparatuses. It is a conceptual diagram explaining the adjustment member integrated in the virtual image display apparatus which concerns on 2nd Embodiment. It is a figure explaining a part of virtual image display device concerning a 3rd embodiment. (A) And (B) is a figure explaining the virtual image display apparatus which concerns on 4th Embodiment, and its modification.

[First Embodiment]
Hereinafter, the first embodiment of the virtual image display device according to the present invention will be described in detail with reference to FIG.

  As shown in FIG. 1, the virtual image display device 100 of the present embodiment is a head-mounted display having an appearance like glasses, and image light based on a virtual image is given to an observer or a wearer wearing the virtual image display device 100. Can be visually recognized, and the observer can visually recognize or observe the outside world image with see-through. The virtual image display device 100 includes first and second optical members 101a and 101b that cover the front of the viewer's eyes so that they can be seen through, and first and second optical devices connected to the base sides of the first and second optical members 101a and 101b, respectively. The image forming main body portions 105a and 105b, and the support members 102 for supporting the optical members 101a and 101b and the image forming main body portions 105a and 105b in front of the eyes of the observer. Here, the first display device 100A as an image forming unit combining the first optical member 101a on the left side and the first image forming main body unit 105a in the drawing is a part that forms a virtual image for the right eye, and is a single unit. But it functions as a virtual image display device. In addition, the second display device 100B as an image forming unit that combines the second optical member 101b on the right side and the second image forming main body unit 105b in the drawing is a part that forms a virtual image for the left eye. It functions as a virtual image display device. The support device 102 includes a frame portion 103 that is mainly disposed in front of the eyes of the observer (more precisely, the periphery in front of the eyes), and a temple portion (a vine portion) 104 that extends rearward from both left and right rear ends of the frame portion 103. .

  FIG. 2A is a perspective view for explaining the front side appearance of the virtual image display device 100, and FIG. 2B is a front side perspective view in which the virtual image display device 100 is partially disassembled.

  As shown in FIG. 2A, the frame portion 103 of the support device 102 includes a frame portion 107 disposed on the upper side and a protector 108 disposed on the lower side. The upper frame portion 107 is an elongated plate-like member that is bent in a U shape within the XZ plane. That is, the frame portion 107 is a U-shaped member that surrounds the frontal region and the frontal region of the temporal region. The frame portion 107 includes a front surface portion 107a extending in the left and right lateral direction (X direction) and a pair of side surface portions 107b and 107c extending in the front and rear depth direction (Z direction). The frame portion 107, that is, the front surface portion 107a and the side surface portions 107b and 107c are formed of aluminum die casting or other various metal materials. By forming the frame portion 107 from a metal material, the frame portion 107 can be made small and light, while maintaining sufficient rigidity and ensuring the durability of the entire apparatus. Note that the frame portion 107 may have a resin part that can be disassembled in part. The width of the front portion 107a in the depth direction (Z direction) is sufficiently thicker than the thickness or width of the light guide device 20 corresponding to the first and second optical members 101a and 101b.

  The first optical member 101a and the first image forming main body portion 105a are arranged on the left side of the frame portion 107, specifically, on the side end portion 65a that is a portion from the left end portion toward the side surface portion 107b toward the front portion 107a. Are supported by being directly aligned and fixed by screwing. Further, the second optical member 101b and the second image forming main body portion are provided on the right side of the frame portion 107, specifically, on the side end portion 65b that is a portion from the right end portion to the side surface portion 107c toward the front portion 107a. 105b is supported by being aligned and fixed directly by screwing. The first optical member 101a and the first image forming body 105a are aligned with each other by fitting, and the second optical member 101b and the second image forming body 105b are aligned with each other by fitting. Further, the first and second image forming main body portions 105a and 105b constituting the optical system unit are respectively covered with a storage case 105d which is a cover-shaped exterior member.

  A protector 108 shown in FIGS. 2 (A) and 2 (B) is an under rim-like member, and is disposed and fixed below the frame portion 107 shown in FIG. 2 (A). The central portion 108g of the protector 108 is fixed to the central portion 107g of the frame portion 107 by fitting and screwing. The protector 108 is an elongated plate-like member bent in a two-stage crank shape, and is integrally formed of a metal material or a resin material. The first tip portion 108i of the protector 108 is fixed in a state of being fitted into a recess 105i provided in the outer member 105e in the storage case 105d that covers the first image forming main body portion 105a. Further, the second tip end portion 108j of the protector 108 is fixed in a state of being fitted into a recess 105j provided in the outer member 105e in a cover-like storage case 105d that covers the second image forming main body portion 105b.

  The frame portion 107 not only aligns and supports the first and second image forming main body portions 105a and 105b and the like, but also cooperates with the storage case 105d to inside the first and second image forming main body portions 105a and 105b. It also has a role to protect. The frame portion 107 and the protector 108 are separated from or loosely contacted with the oval peripheral portion of the light guide device 20 excluding the root side connected to the first and second image forming main body portions 105a and 105b. Yes. Therefore, even if there is a difference in thermal expansion coefficient between the central light guide device 20 and the frame portion 103 including the frame portion 107 and the protector 108, the light guide device 20 is allowed to expand in the frame portion 103. Thus, the light guide device 20 can be prevented from being distorted, deformed, or damaged.

  A nose support portion 40 is provided along with the frame portion 107. The nose receiving part 40 has a role which supports the frame part 103 by contact | abutting on the side surface of an observer or a wearer's nose. That is, the frame portion 103 is arranged in front of the observer's face by the nose receiving portion 40 supported by the nose and a pair of temple portions 104 described later. The nose receiving portion 40 is screwed so that the central portion 107g of the front portion 107a of one frame portion 107 constituting the frame portion 103 is sandwiched by the central portion 108g of the other protector 108 constituting the frame portion 103. It is fixed by.

  The pair of temple portions 104 is rotatable along substantially the XZ plane that is pivotally supported by the tip portions of the side surface portions 107b and 107c of the frame portion (U-shaped member) 107 and extends horizontally. And it can fold to a state parallel to the second optical members 101a and 101b. In a state where both temple portions 104 are opened outward as shown in the drawing, the tip portions 104a of the pair of temple portions 104 can be placed on the ears of the observer or the wearer, and in cooperation with the nose receiving portion 40. The frame portion 107 can be disposed in front of the observer or the wearer's eyes to maintain the posture. At this time, each temple portion 104 is formed of an elastic resin material (or a composite material of a resin material and a metal material, etc.), and its opening angle is elastically limited. The upper part of the observer's ear can be elastically sandwiched.

  As shown in FIGS. 3A and 3B, the base portion 104b of the temple portion 104 on the first display device 100A side is divided into two upper and lower portions sandwiching the flat tip portion 107h of the side surface portions 107b and 107c. It is connected to the tip portion 107h by a pin 104h as a rotation shaft that is fixed through these. That is, the root portion 104b and the tip portion 107h are a connecting portion 102h that functions as a hinge including the pin 104h, and rotatably connects the frame portion 107 and the temple portion 104. As shown in FIG. 3A, in the state where the temple portion 104 is opened outward, the root portion 104b of the temple portion 104 extends along the extension portion 105q provided along with the storage case 105d. Arranged inside. As shown in FIG. 3B, when the temple portion 104 is folded, the root portion 104b of the temple portion 104 is disposed so as to form a large inward angle with respect to the extension portion 105q.

  As shown in FIG. 3B, a rectangular fixing recess 105r that is elongated along the extension 105q is formed inside the extension 105q of the storage case 105d. In the fixing recess 105r, an adjustment pad 109a formed of rubber or another elastic body is fitted and fixed as an adjustment member. The adjustment pad (adjustment member) 109a has a main body portion 109d that fits into the fixing recess 105r, and a front side portion 109e that protrudes and is exposed inside the extension portion 105q or the fixing recess 105r. The adjustment pad (adjustment member) 109a is elastically deformed as an elastic body, and is elastically rotated to open outside the temple portion 104 by being in close contact with the side surface 104f of the base portion 104b of the temple portion 104 by the front side portion 109e. Restrict to. At this time, an appropriate rotational moment can be applied to the temple portion 104 by the restoring force of the adjustment pad 109a. As a result, the adjustment pad 109a can not only limit the opening angle of the pair of temple portions 104, but the pair of temple portions 104 can sandwich the upper part of the viewer's ears with an appropriate force. The fixed state at the time of wearing 100 can be made appropriate. The adjustment pad 109a has an effect of closing the opening of the storage case 105d, and can prevent the inside of the storage case 105d from being exposed when the temple portion 104 is folded.

  As shown in FIG. 4B and the like, the adjustment pad 109a is thinned and provided with a cavity 109j inside. This facilitates elastic deformation in the thickness direction of the adjustment pad 109a. By increasing the elastic deformation of the adjustment pad 109a in this way, the rotational moment in the closing direction applied to the temple portion 104 is relatively small. The range in which the tightening by the pair of temple portions 104 is relatively gentle widens, and the wearing feeling, which is a feeling related to the feeling of pressure, weight, and the like when the virtual image display device 100 is worn, is improved.

  The adjustment pad 109a shown in FIGS. 4A and 4B can be replaced with an adjustment pad 109a having a different size or shape. Specifically, as shown in FIG. 4C, by fitting a relatively thin adjustment pad 109a into the fixing recess 105r, the protrusion amount of the front side portion 109e protruding from the fixing recess 105r is reduced, and the temple The opening angle of the portion 104 can be relatively increased. On the contrary, as shown in FIG. 4D, by fitting the relatively thick adjustment pad 109a into the fixing recess 105r, the amount of protrusion of the front side portion 109e protruding from the fixing recess 105r increases, and the temple portion 104 The opening angle of can be made relatively small. That is, the restriction on the opening angle of the temple portion 104 can be adjusted by exchanging with an adjustment pad 109a of a different type. At the time of replacement, the main body portion 109d can be pulled out from the fixing recess 105r by pulling the adjustment pad 109a strongly. Note that the method of changing the opening angle of the temple portion 104 is not limited to the increase or decrease of the protrusion amount of the front side portion 109e, but the shape change of the cavity 109j, the material change of the adjustment pad 109a, or the like can be used.

  FIG. 5 is a view for explaining adjustment of the opening angle of the pair of temple portions 104. The solid line indicates the opening angle θ1 of the temple portion 104 when the adjustment pad 109a shown in FIG. 4B is used, and the dotted line indicates the temple portion 104 when the adjustment pad 109a shown in FIG. 4C is used. The opening angle θ2 is shown. The illustrated opening angles θ1 and θ2 indicate a case where almost no force is applied to the temple portions 104. When a strong force is applied to the pair of temple portions 104, the pair of temple portions 104 are opened, for example, at an opening angle θ1. It is also possible to change from the above state to a state close to the opening angle θ2, for example. Further, the portion (tip end portion) 104q extending from the central portion 104p to the tip end portion 104a of the temple portion 104 is formed of an elastically deformable material and can be bent and deformed. That is, the opening angle of the temple portion 104 can be increased by its own elastic deformation. By making the adjustment pad 109a replaceable as described above, even a small-faced wearer (particularly a woman) can exhibit reliable holdability. In addition, it is not necessary to prepare a plurality of frame portions 107, and it becomes easy to unify or simplify product specifications.

  Hereinafter, the configuration of the optical system of the virtual image display device 100 will be described. First, as shown in FIG. 6A, the first display device (image forming unit) 100A includes a projection fluoroscopy device 70 that is a projection optical system and an image display device 80 that forms video light. Can see. The projection see-through device 70 has a role of projecting the image formed by the first image forming main body 105a as a virtual image onto the eyes of the observer. The projection see-through device 70 includes a light guide member 10 for light guide and see-through, a light transmitting member 50 for see-through, and a projection lens 30 for image formation. That is, the first optical member 101 a or the light guide device 20 is configured by the light guide member 10 and the light transmission member 50, and the first image forming main body portion 105 a is configured by the image display device 80 and the projection lens 30. .

  Hereinafter, the image display device 80 and the projection lens 30 constituting the first image forming main body portion 105a will be described with reference to FIGS.

  The image display device 80 includes an illumination device 81 that emits illumination light, a video display element 82 that is a transmissive spatial light modulator, and a drive control unit 84 that controls operations of the illumination device 81 and the video display element 82. Have.

  The illumination device 81 of the image display device 80 includes a light source 81a that generates light including three colors of red, green, and blue, and a backlight light guide unit 81b that diffuses light from the light source into a light beam having a rectangular cross section. Have The video display element 82 is formed of, for example, a liquid crystal display device, and spatially modulates the illumination light from the illumination device 81 to form video light that is to be displayed such as a moving image. The drive control unit 84 includes a light source drive circuit 84a and a liquid crystal drive circuit 84b. The light source driving circuit 84a supplies electric power to the illumination device 81 to emit illumination light with a stable luminance. The liquid crystal driving circuit 84b outputs an image signal or a driving signal to the video display element 82, thereby forming color video light or image light as a source of a moving image or a still image as a transmittance pattern. Note that the liquid crystal driving circuit 84b can have an image processing function, but an external control circuit can also have an image processing function.

  The projection lens 30 is a projection optical system including three optical elements 31 to 33 as components, and includes a lens barrel 39 that houses and supports these optical elements 31 to 33. The optical elements 31 to 33 are, for example, aspheric lenses, and form an intermediate image corresponding to the display image of the video display element 82 inside the light guide member 10 in cooperation with a part of the light guide member 10. The lens barrel 39 has an engagement member 39a having a rectangular frame shape on the front end side. The engaging member 39 a is positioned on the second light guide portion 12 side of the light guide member 10, thereby enabling the light guide member 10 to be positioned with respect to the lens barrel 39.

  The video display element 82 includes a liquid crystal panel 82a and an element case 82b. The liquid crystal panel 82a is housed inside the element case 82b and is held so as not to move. The element case 82b is a molded product formed of a light shielding resin material.

  Hereinafter, the structure of the light guide device 20 will be described with reference to FIGS. 8 (A) and 8 (B), and the first display device (image formation) will be described with reference to FIGS. 9 (A) and 9 (B). Part) The assembly of the light guide device 20 and the lens barrel 39 constituting the part 100A to the frame part 107 will be described.

  As shown in FIGS. 8A and 8B, the light guide member 10 and the light transmission member 50 are fixed to each other to form an integrated light guide device 20. The light guide device 20 is a light-transmitting optical block-like or prism-like member that guides the image light to the observer's eyes while reflecting the image light inside. The main body part surrounded by the peripheral part of the light guide device 20 has an oval outline. Here, the light transmitting member 50 is disposed in the extending direction so as to be connected to the distal end side of the light guide member 10, that is, the emission side or the first light guide part 11 on the light emission side, and is joined by bonding using an adhesive. It is fixed to the first light guide portion 11. The light guide device 20 in which the light guide member 10 and the light transmission member 50 are combined corresponds to the first optical member 101a in FIG. 1 and forms an image pattern for display with the projection lens 30 of the projection fluoroscopic device 70. 80 corresponds to the first image forming main body 105a in FIG. Of the peripheral portion of the light guide device 20, on the upper side near the frame portion 107, a rib 10 n that is fitted into a limiting portion 107 n (see FIG. 8B) provided on the lower surface of the frame portion 107 is formed. . Due to the presence of the first rib 10n, the displacement of the light guide device 20 in the depth direction (Z direction) is limited.

  Hereinafter, with reference to FIGS. 9A and 9B, the assembly of the first display device 100A to the frame unit 107 will be described. The video display element 82 of the image display device 80 constituting the first image forming main body portion 105 a is fixed to the rear end portion 39 h of the lens barrel 39 of the projection lens 30. A thin plate-like illumination device 81 is attached in advance to the back surface of the image display element 82 (on the opposite side of the projection lens 30). The projection lens 30 is directly fixed to a first fixing portion 61 f provided at the side end portion 65 a of the frame portion 107 using an attachment portion 39 g formed so as to be embedded in the lens barrel 39. At the time of such fixing, the back surface 68f of the first fixing portion 61f and the upper end surface of the mounting portion 39g are brought into contact with each other to achieve alignment, and the screw 61t is screwed into the mounting portion 39g through the screw hole 61s. Possible and secure fixing is possible. At this time, the boss 39x provided in the lens barrel 39 is fitted into the boss hole 61x of the frame portion 107, the rotation of the lens barrel 39 is restricted, and the positioning related to the rotation is also performed. On the other hand, the light guide device 20 that is the first optical member 101a uses the protrusion-shaped attachment portion 10g formed at the neck portion thereof to provide the second fixing portion 61e provided at the side end portion 65a of the frame portion 107. It is fixed directly to. The mounting portion 10g is erected so as to extend around the incident side or the light incident side portion of the light guide device 20, specifically, around the boundary between the first light guide portion 11 and the second light guide portion 12. ing. At the time of such fixing, the abutting surface 68e provided at the front portion of the second fixing portion 61e and the back surface 10k of the mounting portion 10g come into contact with each other to achieve alignment, and the screw 61v is screwed into the screw hole 61u. By screwing it through 10u, it is possible to attach and detach and surely fix.

  The light guide device 20 is fitted to a rectangular frame-shaped engagement member 39 a that is provided with a distal end portion 12 j of the light guide member 10 on the second light guide portion 12 side provided on the front end side of the lens barrel 39 of the projection lens 30. By doing so, it is locked in a state of being positioned with respect to the projection lens 30. That is, when the light guide member 10 provided in the light guide device 20 is fixed to the second fixing portion 61e of the frame portion 107, the distal end portion 12j on the second light guide portion 12 side is placed in the engaging member 39a of the lens barrel 39. Insert it so that it fits. At this time, the side surface 12m of the distal end portion 12j contacts the inner surface 39m of the engaging member 39a, thereby achieving alignment. Thereafter, although detailed description is omitted, the protector 108 is fixed to the frame portion 107 so as to sandwich the nose receiving portion 40 at the central portion 107g. Through the above steps, an assembly of the frame portion 107, the projection see-through device 70, and the protector 108 can be obtained.

  Thereafter, as shown in FIG. 2A, the outer member 105e of the storage case 105d is fixed to the assembly of the frame portion 107 and the projection see-through device 70. The external material 105e is fixed by fitting with the frame portion 107 and the projection lens 30, screw fastening to the attachment portion 39g of the projection lens 30, or the like. At this time, the tip portions 108i and 108j of the protector 108 already fixed to the frame portion 107 are fitted and fixed to the recesses 105i formed in the outer member 105e. Next, the inner member 105f is fitted into the outer member 105e and fixed to the outer member 105e by screwing. Thereby, in the space between the inner member 105f and the outer member 105e, the base side of the light guide device 20 and the projection lens 30, which constitute the projection see-through device 70, the image display device 80, and the side surface of the frame portion 107. Part 107b and part of 107c are accommodated.

  The second display device (image forming unit) 100B shown in FIG. 1 has a structure similar to that of the first display device (image forming unit) 100A, and the first display device 100A is simply reversed symmetrically. Therefore, description of the structure, function, assembly, and the like of the second display device 100B is omitted.

  With reference to FIG. 7, details of functions and operations of the projection fluoroscopic device 70 will be described. Of the projection see-through device 70, the light guide member 10 that is a part of the light guide device 20 is an arcuate member that is curved along the face in plan view. Of the light guide member 10, the first light guide portion 11 is disposed on the center side close to the nose, that is, on the light emitting side, and has a first surface S 11, a second surface S 12, The second light guide portion 12 is disposed on the peripheral side away from the nose, that is, on the light incident side, and has a fourth surface S14, a fifth surface S15, and a side surface having an optical function. Have Among these, the first surface S11 and the fourth surface S14 are continuously adjacent, and the third surface S13 and the fifth surface S15 are continuously adjacent. In addition, the second surface S12 is disposed between the first surface S11 and the third surface S13, and the fourth surface S14 and the fifth surface S15 are adjacent to each other at a large angle.

  In the light guide member 10, the first surface S11 is a free-form surface having the emission side optical axis AXO parallel to the Z axis as a central axis, and the second surface S12 is a reference surface (cross section shown) parallel to the XZ surface. The third surface S13 is a free-form surface having the emission-side optical axis AXO as the central axis. The third surface S13 is a free-form surface having the optical axis AX1 inclined with respect to the Z-axis as a central axis. The fourth surface S14 is a free-form surface having an optical axis AX5 as a central axis that is included in the reference plane parallel to the XZ plane and is parallel to a bisector of a pair of optical axes AX3 and AX4 inclined with respect to the Z axis. The fifth surface S15 is a bisector of a pair of optical axes AX4 and AX5 that are included in the reference plane parallel to the XZ plane and inclined with respect to the Z axis, or a line that forms a small angle with respect to this. It is a free-form surface with a central axis. The first to fifth surfaces S11 to S15 described above are vertically (or vertically) across a reference surface (cross section in the figure) extending horizontally (or laterally) and parallel to the XZ plane and through which the optical axes AX1 to AX5 and the like pass. ) With respect to the Y-axis direction.

  The main body 10s of the light guide member 10 is formed of a resin material exhibiting high light transmittance in the visible range, and is molded by, for example, injecting and solidifying a thermoplastic resin in a mold. In addition, as a material of the main body 10s, for example, a cycloolefin polymer or the like can be used. Although the main body 10s is an integrally formed product, the light guide member 10 can be functionally divided into the first light guide portion 11 and the second light guide portion 12 as described above. The first light guide portion 11 allows the image light GL to be guided and emitted, and allows the external light HL to be seen through. The second light guide portion 12 allows the image light GL to be incident and guided.

  In the first light guide portion 11, the first surface S11 functions as a refracting surface that emits the image light GL to the outside of the first light guide portion 11, and also functions as a total reflection surface that totally reflects the image light GL on the inner surface side. To do. The first surface S11 is arranged in front of the eye EY and has a concave shape with respect to the observer. The first surface S11 is a surface formed by the hard coat layer 27 applied to the surface of the main body 10s.

  The second surface S12 is the surface of the main body 10s, and the half mirror layer 15 is attached to the surface. The half mirror layer 15 is a light-transmissive reflective film (that is, a semi-transmissive reflective film). The half mirror layer (semi-transmissive reflective film) 15 is formed not on the entire second surface S12 but on the partial area PA in which the second surface S12 is narrowed mainly in the vertical direction along the Y axis (FIG. 6). (See (A)). The half mirror layer 15 is formed by forming a metal reflective film or a dielectric multilayer film on the partial area PA in the lower ground of the main body 10s. The reflectance of the half mirror layer 15 with respect to the video light GL is set to be 10% or more and 50% or less in the assumed incident angle range of the video light GL from the viewpoint of facilitating observation of the external light HL by see-through. The reflectance of the half mirror layer 15 of the specific embodiment with respect to the video light GL is set to 20%, for example, and the transmittance with respect to the video light GL is set to 80%, for example.

  The third surface S13 functions as a total reflection surface that totally reflects the video light GL on the inner surface side. The third surface S13 is arranged in front of the eye EY, and has a concave shape with respect to the observer, like the first surface S11, and allows the first surface S11 and the third surface S13 to pass therethrough. When the external light HL is viewed, the diopter is substantially zero. The third surface S13 is a surface formed by the hard coat layer 27 applied to the surface of the main body 10s.

  In the second light guide portion 12, the fourth surface S14 functions as a total reflection surface that totally reflects the video light GL on the inner surface side. The fourth surface S14 also functions as a refracting surface that allows the image light GL to enter the second light guide portion 12. The fourth surface S14 is a surface formed by the hard coat layer 27 applied to the surface of the main body 10s.

  In the second light guide portion 12, the fifth surface S15 is formed by depositing the light reflecting film RM formed of an inorganic material on the surface of the main body 10s as described above, and functions as a reflecting surface. .

  The light transmissive member 50 is fixed integrally with the light guide member 10 as described above to form one light guide device 20. The light transmissive member 50 is a member (auxiliary optical block) that assists the see-through function of the light guide member 10, and includes a first transmissive surface S51, a second transmissive surface S52, and a third side surface having an optical function. And a transmission surface S53. Here, the second transmission surface S52 is disposed between the first transmission surface S51 and the third transmission surface S53. The first transmission surface S51 is on a curved surface obtained by extending the first surface S11 of the light guide member 10, and the second transmission surface S52 is joined and integrated with the second surface S12 by the adhesive layer CC. It is a curved surface, and the third transmission surface S53 is on a curved surface obtained by extending the third surface S13 of the light guide member 10. Among these, since 2nd transmissive surface S52 and 2nd surface S12 of the light guide member 10 are integrated by joining via the thin contact bonding layer CC, they have the shape of the substantially same curvature.

  The light transmissive member (auxiliary optical block) 50 exhibits high light transmittance in the visible range, and the main body portion of the light transmissive member 50 is a thermoplastic resin material having substantially the same refractive index as the main body 10 s of the light guide member 10. Is formed. The light transmitting member 50 is formed by bonding a main body portion to the main body 10s of the light guide member 10 and then forming a hard coat together with the main body 10s in the bonded state. That is, the light transmitting member 50 is the same as the light guiding member 10, but the hard coat layer 27 is applied to the surface of the main body portion. The first transmission surface S51 and the third transmission surface S53 are surfaces formed by the hard coat layer 27 applied to the surface of the main body portion.

  Hereinafter, an optical path of the image light GL and the like in the virtual image display device 100 will be described. The video light GL emitted from the video display element (video element) 82 is converged by the projection lens 30 and is incident on the fourth surface S14 provided on the light guide member 10 and having a positive refractive power.

  The video light GL that has passed through the fourth surface S14 of the light guide member 10 proceeds while converging, and is reflected by the fifth surface S15 having a relatively weak positive refractive power when passing through the second light guide portion 12. The light is incident on the fourth surface S14 again from the inside and reflected.

  The image light GL reflected by the fourth surface S14 of the second light guide portion 12 is incident on the third surface S13 having a relatively weak positive refractive power and totally reflected by the first light guide portion 11, and is compared. Is incident on the first surface S11 having weak negative refractive power and is totally reflected. The video light GL forms an intermediate image in the light guide member 10 before and after passing through the third surface S13. The image plane II of the intermediate image corresponds to the image plane OI of the video display element 82.

  The image light GL totally reflected by the first surface S11 is incident on the second surface S12. In particular, the image light GL incident on the half mirror layer 15 is partially transmitted through the half mirror layer 15 while partially transmitting. And is incident again on the first surface S11 and passes therethrough. The half mirror layer 15 acts as a layer having a relatively strong positive refractive power with respect to the image light GL reflected here. Further, the first surface S11 acts as having negative refractive power with respect to the video light GL passing through the first surface S11.

  The video light GL that has passed through the first surface S11 enters the pupil of the observer's eye EY or an equivalent position thereof as a substantially parallel light beam. That is, the observer observes an image formed on the video display element (video element) 82 by the video light GL as a virtual image.

  On the other hand, among the external light HL, the light incident on the −X side from the second surface S12 of the light guide member 10 passes through the third surface S13 and the first surface S11 of the first light guide portion 11, At this time, positive and negative refractive powers are canceled and aberration is corrected. That is, the observer observes an external image with little distortion through the light guide member 10. Similarly, of the external light HL, the light incident on the + X side from the second surface S12 of the light guide member 10, that is, the light incident on the light transmission member 50 is the third transmission surface S53 provided on the light transmission member 50. When passing through one transmission surface S51, positive and negative refractive powers are canceled and aberration is corrected. That is, the observer observes an external image with little distortion through the light transmission member 50. Further, of the external light HL, the light incident on the light transmission member 50 corresponding to the second surface S12 of the light guide member 10 has positive and negative refraction when passing through the third transmission surface S53 and the first surface S11. The force is canceled and the aberration is corrected. That is, the observer observes an external image with little distortion through the light transmission member 50. The second surface S12 of the light guide member 10 and the second transmission surface S52 of the light transmission member 50 both have substantially the same curved surface shape, have substantially the same refractive index, and the gap between them is substantially the same. The adhesive layer CC is filled with the same refractive index. That is, the second surface S12 of the light guide member 10 and the second transmission surface S52 of the light transmission member 50 do not act as a refractive surface with respect to the external light HL.

  However, since the external light HL incident on the half mirror layer 15 is partially reflected while partially transmitting through the half mirror layer 15, the external light HL from the direction corresponding to the half mirror layer 15 is The transmittance of the half mirror layer 15 is weakened. On the other hand, since the video light GL is incident from the direction corresponding to the half mirror layer 15, the observer can view the outside world together with the image formed on the video display element (video element) 82 in the direction of the half mirror layer 15. You will observe the image.

  Of the image light GL propagated in the light guide member 10 and incident on the second surface S <b> 12, the image light GL not reflected by the half mirror layer 15 enters the light transmissive member 50, but is provided in the light transmissive member 50. Returning to the light guide member 10 is prevented by an anti-reflection portion (not shown). That is, the image light GL that has passed through the second surface S12 is prevented from returning to the optical path and becoming stray light. In addition, the external light HL incident from the light transmitting member 50 side and reflected by the half mirror layer 15 is returned to the light transmitting member 50, but is guided by the above-described antireflection unit (not shown) provided in the light transmitting member 50. It is prevented from being emitted to the optical member 10. That is, it is possible to prevent the external light HL reflected by the half mirror layer 15 from returning to the optical path and becoming stray light.

  As is clear from the above description, according to the virtual image display device 100 of the present embodiment, the adjustment pad 109a as the adjustment member provided in the support device 102 adjusts the restriction on the opening angle of the pair of temple portions 104. The opening angle of the pair of temple portions 104 can be adjusted in accordance with the face width of the observer or the wearer. Specifically, by changing the adjustment pad 109a to one having a different thickness or the like, it is possible to adjust the state of sandwiching the face by the pair of temple portions 104 according to the width of the face of the observer or the wearer. Thereby, the mounting state of the virtual image display device 100 can be stabilized, and tightening by the pair of temple portions 104 can be prevented or the mounting can be prevented from being felt tight.

[Second Embodiment]
Hereinafter, a second embodiment of the virtual image display device according to the present invention will be described with reference to FIG. 10 and the like. The virtual image display device according to the second embodiment is a partial modification of the virtual image display device according to the first embodiment, and parts not specifically described are the same as those of the virtual image display device according to the first embodiment. Yes.

  As shown in FIG. 10, an angle adjusting mechanism 209a for changing the restriction on the opening angle of the pair of temple portions as an adjusting member is housed in the recess 205r formed in the extension portion 105q provided in the housing case 105d. Has been. The angle adjustment mechanism 209a includes an eccentric cam 209b, a spring 209c, a support portion 209d, and a cam shaft guide 209e. The eccentric cam 209b rotates around the cam shaft 209j, the spring 209c biases the eccentric cam 209b against the inclined bottom surface 205z of the fixing recess 205r, and the support portion 209d supports the other end of the spring 209c. The cam shaft guide 209e regulates the moving direction of the cam shaft 209j in the vertical direction of the drawing. The eccentric cam 209b hits the root portion 104b of the temple portion 104 to limit the opening angle, and is formed of rubber, plastic, metal, or the like, and the spring 209c is formed of a compression spring, a coil spring, a leaf spring, or the like. When the eccentric cam 209b is rotated, the amount of protrusion of the eccentric cam 209b from the recess 205r gradually changes. By this angle adjustment mechanism 209a, the restriction on the opening angle of the pair of temple portions 104 can be continuously adjusted in multiple stages.

[Third Embodiment]
The virtual image display device according to the third embodiment will be described below. The virtual image display device according to the third embodiment is a partial modification of the virtual image display device according to the first embodiment, and parts not specifically described are the same as those of the virtual image display device according to the first embodiment. Yes.

  As shown in FIG. 11, in the first display device (image forming unit) 100A on one side constituting the virtual image display device 100 of the present embodiment, the first video element 206a forms intensity-modulated signal light and Signal light is emitted as scanning light TL. The first optical member 201a is an irradiated member that forms the image light GL by reflecting the scanning light TL from the first image element 206a, and has a function of guiding the image light GL to the eye EY. The first drive unit 205a includes a main body portion 280 including a light source that supplies illumination light to the first video element 206a via an optical fiber (not shown), a control circuit that operates the first video element 206a, and the like.

  The first image element 206 a is assembled to the nose pad member 108 a and is indirectly fixed to the frame 103. The first image element 206a includes a signal light modulation unit 281 that modulates illumination light from the main body portion 280 based on a control signal, and a scanning optical system 282 that emits the signal light that has passed through the signal light modulation unit 281 while scanning. Have. Here, the scanning optical system 282 is configured by a MEMS mirror or the like, and the first optical member is adjusted by adjusting the optical path of the signal light by changing the posture in synchronization with the modulation of the signal light by the signal light modulation unit 281. Two-dimensional scanning is performed to change the emission angle of the light beam (scanning light TL) onto the inner surface of 201a vertically and horizontally.

  The first optical member 201a is arranged so as to cover the front of the wearer's eye EY in front of the first video element 206a or in the light emission direction. The first optical member 201 a includes a semi-transmissive reflective film 285 that is a semi-transmissive film that receives scanning light irradiation, and a support member 286 that supports and fixes the semi-transmissive reflective film 285. As a result, not only a virtual image by the video light GL but also light from the outside world enters the wearer's eye EY, and the virtual image display device 200 has a see-through configuration that allows both to be observed. ing. The transflective film 285 can be a half mirror, but can also be a hologram or other diffractive optical element.

  Hereinafter, an image forming operation will be described. First, in the first video element 206a, the signal light modulation unit 281 forms and emits signal light obtained by modulating illumination light corresponding to the luminance of the pixels constituting the image. The signal light emitted from the signal light modulation unit 281 enters a scanning optical system 282 that is a scanning unit. The scanning optical system 282 emits signal light as scanning light TL toward the first optical member 201a. In the first optical member 201a, by making the scanning light TL enter, a virtual image is formed by the image light GL as reflected light here, and the image is recognized by the observer capturing the virtual image with the eyes EY. .

  Since the structure of the frame portion 107 and the temple portion 104 is not changed, the restriction on the opening angle of the temple portion 104 is adjusted by the adjustment pad 109a and the angle adjustment mechanism 209a as in the case of the first or second embodiment. can do.

[Fourth Embodiment]
Hereinafter, the virtual image display apparatus of 4th Embodiment is demonstrated. The virtual image display device according to the fourth embodiment is a partial modification of the virtual image display device according to the first embodiment, and parts not specifically described are the same as those of the virtual image display device according to the first embodiment. Yes.

  As shown in FIG. 12A, the virtual image display device 100 of the present embodiment is configured by a single display device (image forming unit) 100A. That is, the projection fluoroscopic device 70 and the image display device 80 are not provided for each of the right eye and the left eye, but only for either the right eye or the left eye. An image display device 80 may be provided so that the image is viewed with one eye. In this case, the frame 107 and the temple portion 104 can be shaped to be symmetrically arranged as shown in FIG. In particular, on the side where the image display device 80 is not provided, the boundary between the frame 107 and the temple portion 104 corresponds to the extension portion 105q of the storage case 105d (see FIG. 3A and the like). A support portion 305q can be provided. By doing so, it becomes easy to freely adjust the opening angle of the pair of temple portions 104.

  As shown in FIG. 12B, the projection fluoroscope 70 of the single display device (image forming unit) 100A can cover the direction deviating from the front in front of the eyes. That is, instead of covering the entire front of the eye with the projection fluoroscope 70, the virtual image of the virtual image can be obtained by directing the eye in the direction in which the projection fluoroscope 70 is arranged, for example, by placing the projection fluoroscope 70 in front of the eye. Observation becomes possible. In addition, when it is set as the structure which covers the front of eyes locally with the projection fluoroscope 70 as shown in FIG.12 (B), the light transmissive member 50 for fluoroscopy can also be abbreviate | omitted. In addition, a pair of display devices (image forming units) including the projection fluoroscopic device 70 as shown in FIG. 12B can be arranged for both eyes.

  As mentioned above, although this invention was demonstrated according to embodiment, this invention is not restricted to said embodiment, In the range which does not deviate from the summary, it is possible to implement in various aspects, for example, The following modifications are possible.

  For example, the shapes of the fixing recess 105r and the adjustment pad 109a are not limited to those illustrated in FIG. In particular, the shape or the like of the main body portion 109d is influenced from the viewpoint of adjusting the elasticity or fitting state of the adjustment pad 109a, and the shape or the like of the front side portion 109e is influenced from the viewpoint of adjusting the close contact state with the temple portion 104 or the like. The fixing recess 105r and the adjustment pad 109a are not limited to those incorporated in the extension part 105q of the storage case 105d, but can be incorporated directly into the side surface parts 107b and 107c of the frame part 107.

  Further, the connecting portion 102h is not limited to the hinge structure, and can have various structures that facilitate deformation of the temple portion 104 in a specific direction. For example, the frame portion 107 and the temple portion 104 can be connected by an elastic body. Also in this case, it is possible to adjust the opening angle of the pair of temple portions 104 by increasing or decreasing the opening angle of the pair of temple portions 104 by the adjustment pad 109a or other adjustment member while restricting the opening / closing direction of the pair of temple portions 104.

  In the above-described embodiment, the image display device 80 includes a transmissive liquid crystal display device or the like in the image display device 80, but the image display device 80 includes a transmissive liquid crystal display device or the like. A variety of things can be used. For example, a configuration using a reflective liquid crystal display device is also possible, and a digital micromirror device or the like can be used instead of the video display element 82 formed of a liquid crystal display device or the like. As the image display device 80, a self-luminous element typified by an LED array, OLED (organic EL), or the like can be used.

  The frame 103 is not limited to the shape exemplified in the embodiment or the appearance similar to the frame of glasses, but can be various shapes that can bridge the projection lens 30 and the light guide device 20.

  In the above embodiment, the frame unit 107 and the projection lens 30 or the light guide device 20 are separate bodies, and the projection lens 30 and the like are fixed to the frame unit 107 by screwing. Can be fixed to the frame portion 107 by various methods. Further, the lens barrel 39 of the projection lens 30 can be integrally formed with the frame portion 107. As a method for integrally forming the lens barrel 39 with the frame portion 107, there are methods such as outsert molding and cutting of the lens barrel after die casting integral molding.

  In the above embodiment, the engaging member 39a for the light guide device 20 is provided in the lens barrel 39 of the projection lens 30, but the lens tube 39 is fitted on the light guide device 20 side so as to sandwich the lens barrel 39, for example. An engagement member can be provided.

  In the above embodiment, the half mirror layer (semi-transmissive reflection film) 15 is formed in a horizontally long rectangular region. However, the contour of the half mirror layer 15 can be appropriately changed according to the use and other uses. Further, the transmittance and reflectance of the half mirror layer 15 can be changed according to the application and the like. Furthermore, the half mirror layer 15 is not limited to a mere semi-transmissive film (for example, a metal reflective film or a dielectric multilayer film), and can be replaced with a planar or curved hologram element.

  In the above embodiment, the display luminance distribution in the video display element 82 is not particularly adjusted. However, in the case where a luminance difference occurs depending on the position, the display luminance distribution can be adjusted unevenly.

  In the above description, the frame portion 107 supports the image forming main body portions 105 a and 105 b, but the light guide device 20 can also be directly supported by the frame portion 107. Further, the image forming main body portions 105a and 105b and the like can be indirectly supported via the storage case 105d.

  In the above embodiment, the first light S11 and the third surface S13 of the light guide member 10 are guided by totally reflecting the image light by the interface with the air without applying a mirror, a half mirror or the like on the surface. The total reflection in the virtual image display device 100 of the present invention includes reflection formed by forming a mirror coat or a half mirror film on the whole or a part of the first surface S11 or the third surface S13. For example, after the incident angle of the image light satisfies the total reflection condition, the whole or a part of the first surface S11 or the third surface S13 is subjected to mirror coating or the like, and substantially all the image light is reflected. Cases are also included. In addition, as long as image light with sufficient brightness can be obtained, the first surface S11 or the third surface S13 may be entirely or partially coated with a somewhat transmissive mirror.

  In the above description, the light guide member 10 and the like extend in the horizontal direction in which the eyes EY are arranged. However, the light guide member 10 can be arranged to extend in the vertical direction. In this case, the light guide member 10 is supported, for example, in a cantilever state at the top.

  In addition, the first surface S11 and the third surface S13 that are arranged to face each other have a concave shape with respect to the observer, but the first surface S11 and the third surface S13 have a parallel planar shape. There may be. In this case, the diopter can be set to 0 when the observer sees the outside through the first surface S11 and the third surface S13. Further, in the case where the first surface S11 and the third surface S13 are parallel planar shapes, for example, the other surfaces other than the first surface S11 and the third surface S13 are curved to form an intermediate image. It is also possible to form an image having a configuration that does not form an intermediate image.

  AX1-AX5 ... optical axis, EY ... eye, GL ... video light, HL ... external light, RM ... light reflection film, 31-33 ... optical element, 10 ... light guide member, 11, 12 ... light guide part, 15 ... Half mirror layer, 20 ... light guide device, 30 ... projection lens, 39 ... lens barrel, 40 ... nose receiving portion, 50 ... light transmission member, 65a, 65b ... side end, 70 ... projection fluoroscopy device, 80 ... image Display device 81 Illuminating device 82 Image display element 84 Drive control unit 100 Virtual image display device 100A, 100B Display device (image forming unit) 101a 101b Optical member 102 Support device 102h ... Connecting part 103 ... Frame part 104 ... Temple part 104a ... Tip part 104b ... Root part 105a, 105b ... Image forming main body part 105d ... Storage case 105q ... Extension 107, frame portion, 107b, 107c, side surface portion, 107n, restriction portion, 108, protector, 108a, nose pad member, 109a, adjustment pad (adjustment member), 109d, main body portion, 109e, front side portion, 109j, ... cavity

Claims (14)

An image forming unit having an image element, and an optical member that visually recognizes an image by directing light from the image element toward an eye of an observer;
A support device that supports at least a part of the image forming unit so that the optical member is disposed in front of the observer's eyes;
The support device is provided at a frame portion, a pair of temple portions extending from the frame portion, and a connecting portion between the frame portion and the pair of temple portions, respectively, and a restriction on an opening angle of the pair of temple portions. A virtual image display device comprising: an adjustment member that adjusts the angle.   The virtual image display device according to claim 1, wherein the pair of temples are pivotally supported at both ends of the frame portion and can be folded.   The frame portion is a U-shaped member that surrounds the frontal region and the frontal region of the temporal region, and the pair of temples are supported at the distal ends of the U-shaped member. 3. The virtual image display device according to any one of 2 above.   The virtual image display device according to any one of claims 1 to 3, wherein the adjustment member includes a replaceable member and the frame portion. A storage case for storing at least the image element and a coupling portion for guiding light from the image element to the optical member;
The adjustment member is fixed to an extension provided along with the storage case,
5. The virtual image display device according to claim 1, wherein the extension portion extends to a distal end side with respect to the connection portion and is disposed outside a root portion of the temple portion.   The virtual image display device according to claim 5, wherein the adjustment member is accommodated in the extension portion so as to expose a front side portion facing the root portion.   The virtual image display device according to claim 6, wherein the adjustment member is fitted into a fixing recess formed in the extension portion.   The virtual image display device according to claim 5, wherein the adjustment member includes an adjustment pad formed of an elastic body.   The virtual image display device according to claim 8, wherein the adjustment pad is thinned and provided with a cavity therein.   The virtual image display device according to claim 5, wherein the adjustment member is detachable from the extension portion for replacement.   The virtual image display device according to any one of claims 1 to 10, wherein tip side portions of the pair of temple portions are each formed of an elastic body.   The virtual image display device according to any one of claims 1 to 11, wherein the adjustment member includes an angle adjustment mechanism that changes a restriction on an opening angle of the pair of temple portions in a stepwise manner.   The optical member includes a light guide member that guides light of an image and allows the external light to be seen through, and a light transmissive member that is connected to the light guide member and supplements the light see-through function of the external light. Item 13. The virtual image display device according to any one of Items 1 to 12. A first image forming unit having the image element and the optical member; another image element similar to the image element; and a second image forming unit including another optical member similar to the optical member. Prepared,
The virtual image display device according to claim 1, wherein the support device supports the first and second image forming units.

Images