JP3182696U - 3D display device - Google Patents

Abstract

When a two-dimensional image displayed on an image display means is reflected by a reflecting mirror to be stereoscopically viewed, the distance between the reflecting mirror and an observer is shortened to form a small-sized two-dimensional image. A stereoscopic display device capable of stereoscopic viewing is provided.
A first two-dimensional image displayed on a display unit of an image display device is reflected by a first reflecting mirror 45 and a second reflecting mirror 44 so as to be visually recognized. The reflecting mirror 45 is a convex mirror and the second reflecting mirror 44 is a concave mirror, or the first reflecting mirror 45 is a concave mirror and the second reflecting mirror is a convex mirror 44, and the concave mirror The three-dimensional virtual image can be perceived by the approximate parallax when the reflected image is visually recognized by the left and right eyes individually.
[Selection] Figure 10

Description

  The present invention relates to a stereoscopic display device in which a two-dimensional image is reflected by a concave mirror so that a viewer perceives a three-dimensional virtual image.

  Conventionally, as a means for observing a stereoscopic image, there is known a method for stereoscopically viewing two images including binocular parallax separately by visually recognizing with a left eye and a right eye. There are two methods for autostereoscopic viewing of two images: the parallel method, where the right eye gazes the right image, the left eye gazes the left image, the right eye gazes the left image, and the left eye gazes the right image. There is an intersection method in which an image is watched.

  However, in any stereoscopic method, it is necessary to prepare a pair of images including binocular parallax, and it is difficult to stereoscopically view one existing image.

  On the other hand, for example, in Patent Document 1 (Japanese Patent No. 4222627), an image stereoscopic recognition device having a pair of plane mirrors is disposed in front of the television, and one two-dimensional image from the television is displayed on one plane mirror. And a technique for projecting an image on the other plane mirror and allowing the viewer to visually recognize the projected image as a three-dimensional virtual image.

  That is, the field of view width of the observer with respect to the other plane mirror is narrowed from the convergence angle when the observer gazes at the television via the video stereoscopic recognition device. By bringing this field of view width close to 0, the observer can see an image projected on another plane mirror with one eye, which causes the observer to recognize it as a stereoscopic view.

  On the other hand, for example, in Patent Document 2 (Japanese Patent No. 4365435), a Fresnel lens is disposed in front of a display means such as a television screen or a monitor of a personal computer, and the refraction of the Fresnel lens is applied to both eyes of an observer. A technique is disclosed in which a three-dimensional virtual image having a depth is made to be perceived by visually recognizing an image in which a pseudo parallax is generated.

Japanese Patent No. 4222627 Japanese Patent No. 4365435

  However, in the technique disclosed in Patent Document 1, in order to increase the difference between the observer's interpupillary width and the field of view of other mirrors, a considerable separation between the observer and the other mirrors is required. It is necessary to secure a distance (60 to 70 [cm] in the same document). Therefore, there is a problem that the distance is too far to visually recognize a B6 size image displayed on a photograph or a digital photo frame. is there.

  Therefore, the video three-dimensional recognition device disclosed in the above-described document has a problem that its application is limited such as visually recognizing a television image with a large inch size.

  Further, in the technique described in Patent Document 2, since the Fresnel lens is formed in a saw blade shape in cross section, there is a disadvantage that concentric stripes are included in the three-dimensional virtual image perceived by the observer. .

  Accordingly, an object of the present invention is to reduce the distance between the reflecting means and the observer when the one-dimensional image displayed on the image display means is reflected by the reflecting means for stereoscopic viewing. An object of the present invention is to provide a stereoscopic display device that can be stereoscopically viewed even if it is a two-dimensional image and can be applied to a wide range of uses.

  To achieve the above object, the first of the present invention supports an image display means for displaying one two-dimensional image, a reflecting means for reflecting the two-dimensional image to display a three-dimensional virtual image, and the reflecting means. A first reflecting mirror that reflects the two-dimensional image from the image display means, and a second reflecting mirror that reflects the reflected image from the first reflecting mirror. The first reflecting mirror is a convex mirror and the second reflecting mirror is a concave mirror, or the first reflecting mirror is a concave mirror and the second reflecting mirror is a convex mirror. The three-dimensional virtual image can be perceived by the approximate parallax when the reflected image from the concave mirror is individually viewed with the left and right eyes.

  In the above configuration, the approximate parallax when one two-dimensional image displayed on the image display unit is reflected by the reflecting unit configured by at least one concave mirror and the reflected image is individually viewed by the left and right eyes. Since the three-dimensional virtual image can be perceived by the refraction of the concave mirror, the distance between the reflecting means and the observer can be shortened by refraction of the concave mirror. Therefore, even a small-sized two-dimensional image is stereoscopically viewed. And can be applied to a wide range of uses.

  The reflecting means reflects the two-dimensional image from the image display means with a convex mirror or concave mirror as a first reflecting mirror, and then reflects the reflected image with a concave mirror or convex mirror as a second reflecting mirror. With this refraction, the observer perceives a three-dimensional virtual image (normal image). The distortion of the three-dimensional virtual image perceived by the observer is reduced by the reflection of the convex mirror.

  A second aspect of the present invention is characterized in that, in the first aspect, the concave mirror is any one of a concave plane mirror, a concave conical mirror, a concave curved surface mirror, and a concave parabolic mirror.

  In the above device, the concave mirror is any one of a concave plane mirror, a concave cone mirror, a concave curved surface mirror, and a concave parabolic mirror, thereby reducing the type of three-dimensional image, the required image distortion, and cost. The optimum concave mirror can be selected accordingly.

  A third aspect of the present invention includes image display means for displaying one two-dimensional image, reflection means for reflecting the two-dimensional image to display a three-dimensional virtual image, and support means for supporting the reflection means. The reflecting means is composed of at least one concave mirror, and the concave mirror arranges a plane in the vertical direction with respect to the image display means and reflects the two-dimensional image from the image display means upward. It is a concave conical mirror, and is characterized in that a three-dimensional virtual image can be perceived by an approximate parallax when the reflected image from the concave mirror is individually viewed with the left and right eyes.

  In the above device, the concave mirror is a concave conical mirror, the plane of the concave conical mirror is arranged vertically with respect to the image display means, and the two-dimensional image from the image display means is reflected upward. A person can easily perceive a three-dimensional virtual image reflected by a conical mirror and reduced in distortion from above the image display means.

  A fourth aspect of the present invention has image display means for displaying one two-dimensional image, reflection means for reflecting the two-dimensional image to display a three-dimensional virtual image, and support means for supporting the reflection means. The reflecting means includes a first reflecting mirror that reflects the two-dimensional image from the image display means, and a second reflecting mirror that reflects a reflected image from the first reflecting mirror, and The reflecting mirror is a concave plane mirror having a plane arranged in the vertical direction, and the second reflecting mirror is a concave plane mirror having a plane arranged in the horizontal direction, or the first reflector has a plane arranged in the horizontal direction A concave plane mirror disposed in a direction, and the second reflecting mirror is a concave plane mirror in which a plane is disposed in the vertical direction. When the reflected images from the second reflecting mirror are individually visually recognized by the left and right eyes, It is configured to be able to perceive a 3D virtual image with approximate parallax. That.

  In the above device, the two-dimensional image from the image display means is reflected by the first reflecting mirror, which is the upper and lower plane or left and right plane concave plane mirror, and then the reflected image is the second reflecting mirror, the left and right plane or Reflected by the upper and lower plane concave plane mirrors to make the observer perceive a three-dimensional virtual image. The three-dimensional virtual image perceived by the observer is a combination of the upper and lower plane concave plane mirrors and the left and right plane concave plane mirrors. Distortion is reduced.

  5th of this invention is a flame | frame in which the said support means fixes the 1st reflective mirror and the said 2nd reflective mirror in 1st-4th invention, In the said frame, the said image display means A fixed part to be fixed is provided.

  In the above device, the first reflecting mirror and the second reflecting mirror are fixed and integrated with the frame as the supporting means, and the fixing portion provided in the frame is fixed to the image display means. It can be easily attached to the image display means and is easy to handle.

  According to a sixth aspect of the present invention, in the first to fifth aspects, the image display means is a photograph, a book, an electronic book, a mobile phone, a digital photo frame, a portable image display device, a digital camera, a flat computer, a personal computer. Or a television receiver.

  In the above device, one two-dimensional image is reflected by the reflecting means so that a three-dimensional virtual image is perceived. Therefore, the two-dimensional image may be either a still image or a moving image, and a pair of two-dimensional images having binocular parallax. There is no need to prepare images, and images displayed on ordinary photographs, books, electronic books, mobile phones, digital photo frames, portable image display devices, digital cameras, flat computers, monitors for personal computers, and television receivers It can be a display target, and high versatility can be obtained.

  A seventh aspect of the present invention is characterized in that, in the first to sixth aspects of the invention, the image display means is provided with a mirror image processing means for displaying the two-dimensional image by performing a mirror image process.

  In the above-described device, the two-dimensional image is mirror-processed by the mirror image processing means and displayed, thereby allowing the observer to perceive a normal three-dimensional virtual image.

  According to the present invention, one two-dimensional image displayed on the image display means is reflected by the reflecting means composed of at least one concave mirror so as to be a three-dimensional virtual image. The separation distance between the reflecting means and the observer can be shortened, so that even a two-dimensional image having a small size can be stereoscopically viewed and can be applied to a wide range of uses. .

1 is a perspective view of a stereoscopic display device according to a first embodiment. It is a side view of a stereoscopic display device. The concave conical mirror is shown, (a) is a front view, (b) is a plan view, and (c) is a bottom view. It is explanatory drawing which shows image recognition with a left eye similarly. It is explanatory drawing which shows image recognition with a right eye. It is explanatory drawing which shows the state which perceives a three-dimensional virtual image with the left and right eyes similarly. FIG. 2 is a block diagram illustrating a schematic configuration of the stereoscopic display device. It is a perspective view of the state which attached the stereoscopic display apparatus by 2nd Embodiment to the personal computer. FIG. 9 is a side view of FIG. 8. It is a perspective view of the state which attached the stereoscopic display device by 3rd Embodiment to the personal computer. It is a perspective view of the state which attached the stereoscopic display device by 4th Embodiment to the personal computer.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
1 to 6 show a first embodiment of the present invention. Reference numeral 1 in FIGS. 1 and 2 denotes a table of a stereoscopic display device, and a display device stand 2 and a mirror stand 3 are erected on the table 1 in a state of facing each other.

  The display device stand 2 has a stand base 4. The stand base 4 is formed in a long and narrow boat shape. A stand portion 5 is erected on the heel side which is one end in the longitudinal direction, and a long hole 4a extending to the heel side which is the other end is formed behind the stand portion 5. It is installed. A screw 6 erected on the table 1 is loosely inserted into the long hole 4a, and a knob nut 7 is screwed on the screw 6. The stand base 4 of the display device stand 2 loosens the thumbscrew 7 so that the top of the table 1 is supported in the longitudinal direction (arrow Y direction) while being supported by the screw 6 loosely inserted in the long hole 4a. While being able to move, it can be rotated to the arrow X direction centering | focusing on the screw 6. FIG.

  The stand unit 5 includes a stand holder 8 and a stand body 9 fixed on the table 1. The stand holder 8 is formed in a cylindrical shape having a guide hole (not shown) through which a stand rod 9 a protruding from the lower end of the stand body 9 is inserted. 10 is provided.

  The stand nut 10 is for fixing the stand rod 9a inserted through the guide hole of the stand holder 8 to the stand holder 8, and by moving the stand rod 9a up and down in the vertical direction with respect to the guide hole, The height of the main body 9 can be adjusted.

  An arm 13 is connected to the upper portion of the stand body 9 via a ball joint mechanism 12. The ball joint mechanism 12 supports the arm 13 so that the arm 13 can swing freely in the vertical and horizontal directions. The arm 13 can be fixed at a desired position by a fastening member (not shown).

  A mounting portion 13a is fixed to the tip of the arm 13, and a portable image display device (hereinafter simply referred to as “image display device”) 15 as an image display means is provided on the mounting portion 13a. It is fixed in a state where 15a is directed forward. Examples of the image display device include an electronic book, a mobile phone, a digital photo frame, a portable game machine, a PDA (Personal Digital Assistant), a PND (Personal Navigation Device), and the like. Note that the image display means is not limited to the image display device 15, and any image display means may be used as long as it has a display unit 15a such as a portable electronic terminal or a digital camera. Can do. In this case, in a device in which the display unit (monitor) 15a is provided on the back side of the device, such as a digital camera, the front side is attached to the mounting unit 13a side.

  Further, as means (fixing means) for fixing the image display device 15 to the attachment portion 13a, a hook is formed on the attachment portion 13a in addition to the double-sided adhesive tape and the hook-and-loop fastener, and the hook is formed on the image display device 15. Some of them are fixed by engaging with grooves.

  On the other hand, a stand main body 21 of the mirror stand 3 is erected on the table 1, and an arm 23 is provided on the upper portion of the stand main body 21 via an elevation angle adjusting unit 22, and a mirror mounting portion 23 a is fixed to the tip of the arm 23. Has been. A concave conical mirror 24, which is an example of a concave mirror constituting the reflecting means, is fixed to the mirror mounting portion 23a, and the reflecting surface 24a faces the display portion 15a side of the image display device 15. A hood 25 is attached to the upper part of the concave conical mirror 24.

  Further, as indicated by an arrow Z in FIG. 2, the elevation angle adjusting unit 22 adjusts the elevation angle of the concave conical mirror 24, and is positioned and fixed by tightening with a tightening member (not shown). As shown in FIG. 3, the concave conical mirror 24 is formed in a shape in which the reflecting surface 24a forms a part of the inner peripheral surface of the conical shape, and is provided with a flat surface in the vertical direction, and has a lower curvature. Is set larger than the upper curvature. In other words, the lower curvature radius is smaller than the upper curvature radius. One two-dimensional image displayed on the display unit 15a of the image display device 15 is reflected obliquely upward by the reflecting surface 24a of the concave conical mirror 24, and is given to the left and right eyes 26a and 26b of the observer by refraction at that time. It is visually recognized with parallax. As a result, the observer can perceive a three-dimensional virtual image by viewing the reflected image from the concave conical mirror 24 with the naked eye.

  Next, an operation in the case where two images (virtual images) having parallax are generated from one two-dimensional image by using the stereoscopic display device having such a configuration, and these are stereoscopically viewed with the naked eye will be described.

  First, the image display device 15 is fixed to the attachment portion 13a of the stand portion 5 through a fixing means, and the display portion 15a is directed toward the concave conical mirror 24 side.

  Next, the position and inclination angle of the display unit 15 a of the image display device 15 fixed to the attachment unit 13 a and the elevation angle of the reflection surface 24 a of the concave conical mirror 24 are adjusted. As shown in FIG. 2, the observer reflects one two-dimensional image displayed on the display unit 15 a of the image display device 15 with the left and right eyes 26 a and 26 b on the reflecting surface 24 a of the concave conical mirror 24. A three-dimensional virtual image is perceived as an image with binocular parallax due to refraction at that time. Therefore, the adjustment work is performed while the observer visually observes the image reflected from the reflecting surface 24a of the concave conical mirror 24.

  That is, the knob nut 7 is loosened and the distance between the concave conical mirror 24 and the display portion 15a is adjusted by moving the stand base 4 back and forth, and after adjusting it to a predetermined value, the knob nut 7 is tightened and fixed again. Further, the stand nut 10 of the stand part 5 is loosened, and the stand rod 9a projecting from the lower part of the stand body 9 is moved up and down from the stand holder 8 to adjust the height of the display part 15a, and after a predetermined adjustment Then, the stand nut 10 is tightened again to fix the height. Further, the fastening member fixing the ball joint mechanism 12 is loosened, the arm 13 is swung up and down and left and right around the stand body 9, the orientation of the display portion 15a is adjusted, and after the predetermined adjustment, the fastening member Tighten again to fix.

  On the other hand, the elevation angle of the reflecting surface 24a of the concave conical mirror 24 is adjusted by loosening a tightening member (not shown) for tightening the elevation angle adjustment unit 22 provided on the upper portion of the stand body 21, Tighten the clamping member again.

  Then, with the positional relationship between the display unit 15a of the image display device 15 and the reflecting surface 24a of the concave conical mirror 24 adjusted to a predetermined value, as shown in FIG. 2, the left and right eyes 26a and 26b of the observer The reflective surface 24a of the conical mirror 24 is visually recognized. Incidentally, as shown in FIG. 6, the left and right eyes 26a and 26b have an inter-pupil distance PD (about 6 to 7 cm), and depth information is recognized from the difference in the images captured in the left and right eyes 26a and 26b. Perceived as a dimensional image.

  As shown in FIG. 4, when one two-dimensional image displayed on the display unit 15a is projected on the reflecting surface 24a of the concave conical mirror 24 and the reflected image is viewed with the left eye 26a, an image that is reflected on the reflecting surface 24a. Is reflected at an angle (reflection angle) θ2 symmetric with respect to the incident angle θ1 with respect to the normal extending from the center of curvature of the concave conical mirror 24. When the left eye 26a is closer to the reflecting surface 24a than the focal point of the concave conical mirror 24, the left virtual image 31L is visually recognized by the left eye 26a. The symbols A ', B', and C 'of the left virtual image 31L indicate the positions corresponding to A, B, and C of the display unit 15a, and it can be seen that the left virtual image 31L is a mirror image. The reflection angle θ2 becomes an acute angle on the side close to the left eye 26a, and gradually becomes an obtuse angle as the distance from the left eye 26a increases.

  On the other hand, as shown in FIG. 5, the reflected image from the reflecting surface 24a of the concave conical mirror 24 with the right eye 26b is the right virtual image 31R because the right eye 26b is closer to the reflecting surface 24a than the focal point of the concave conical mirror 24. Visible. The reflection angle θ2 is an acute angle on the side close to the right eye 26b, and gradually becomes an obtuse angle as the distance from the right eye 26b increases. Note that the symbols A ″, B ″, and C ″ of the right virtual image 31R indicate the positions corresponding to A, B, and C of the display unit 15a, and it can be seen that the right virtual image 31R is a mirror image. The reflection angle θ2 becomes an acute angle on the side close to the left eye 26a, and gradually becomes an obtuse angle as the distance from the left eye 26a increases.

  As a result, as shown in FIG. 6, left and right virtual images 31L and 31R that are shifted to the left and right by the width δ are individually visually recognized by the left and right eyes 26a and 26b, and approximate parallax is formed by the shift width δ. An observer perceives a three-dimensional virtual image, that is, a depth.

  Further, in the present embodiment, the concave conical mirror 24 is employed as the reflecting means, the vertical direction is a plane, the lower curvature is increased, and the upper curvature is decreased. Therefore, as shown in FIG. When the reflected image (virtual image) from the side is viewed obliquely from above, distortion due to the difference in distance between the lower and upper portions of the reflecting surface 24a and the left and right eyes 26a and 29b is reduced due to the difference in the upper and lower curvatures of the concave cone mirror 24, A good three-dimensional virtual image can be perceived.

  Incidentally, as shown in FIG. 7, the image display device 15 according to the present embodiment can display the image stored in the image storage unit 35 on the display unit 15a as either a normal image or a mirror image. In addition, the image (normal image) of the image storage unit 35 and the pointer (cursor) output from the external input processing unit 36 can be mirror-image processed so that the operation of the mouse or the like can be performed on the mirror image. A mirror image circuit unit 37, and a display selection circuit unit 38 as display selection means for selectively displaying a normal image from the image storage unit 35 and a mirror image from the mirror image circuit unit 37 on the display unit 15a are provided. ing.

  The switching operation of the display selection circuit unit 38 is performed by an operator operating an external input means such as a mouse (not shown) or operation buttons connected to the image display device 15, or the display unit 15a functions as a touch panel. If this is the case, this display unit 15a is operated as an external input means.

  When the operator connects the image storage unit 35 and the external input processing unit 36 to the display unit 15 a via the display selection circuit unit 38, the normal image of the image storage unit 35 and the output from the external input processing unit 36 are output. The pointer (cursor) to be displayed is displayed on the display unit 15a as it is. On the other hand, when the external input processing unit 36 and the mirror image circuit unit 37 are connected to the display unit 15 a via the display selection circuit unit 38, the normal image stored in the image storage unit 35 and the external input processing unit 36 are output. A pointer (cursor) is converted into a mirror image by the mirror image circuit unit 37 and displayed on the display unit 15a.

  Therefore, when an observer intends to view an image displayed on the display unit 15 a of the image display device 15 by using the concave cone mirror 24, the mirror image circuit is connected to the display unit 15 a via the display selection circuit unit 37. The unit 35 and the external input processing unit 36 are connected to display a mirror image on the display unit 15a. As a result, the observer can perceive the image from the mirror image circuit unit 35 as a normal three-dimensional virtual image. Furthermore, since the pointer (cursor) is displayed in a normal image state on the display unit 15a, the operating direction of the external input means such as a mouse operated by the observer and the pointer (cursor) displayed on the display unit 15a are displayed. Since the movement direction matches, good operability can be obtained.

[Second Embodiment]
8 and 9 show a second embodiment of the present invention. In the first embodiment described above, the portable image display device 15 has been described as an example of the image display means. However, in the present embodiment, the portable image display device 15 is provided in a notebook personal computer (hereinafter referred to as “notebook personal computer”) 40. A mode in which a stereoscopic display device is attached to the display surface 41a of the monitor 41 is shown.

  As shown in FIG. 8, the stereoscopic display device according to the present embodiment has a pair of left and right frames 42, a front end side and a rear end side of both frames 42, and a first reflecting mirror 43 which is an example of a reflecting means. A second reflecting mirror 44 is fixed.

  The first reflecting mirror 43 is a plane mirror, and has upper ends fixed to a pair of frames 42 so as to face the monitor 41 of the notebook computer 40. The second reflecting mirror 44 is a concave plane mirror in which the reflecting surface 44a is formed into a part of the inner circumference of the cylindrical shape, the plane is arranged in the vertical direction, and both ends on the lower side are attached to the frame 42. It is fixed. A mounting groove 42a that fits into the upper outer frame of the monitor 41 is formed in the middle of the frame, and is detachably positioned and fixed by a clip (not shown).

  As shown in FIG. 9, when the mounting groove 42a of the frame 42 is attached to the upper outer frame of the monitor 41 and fixed with a clip, the first reflecting mirror 43, which is a plane mirror, is opposed to the monitor 41, and is reflected on the reflecting surface 43a. The incident image from the display surface 41 a of the monitor 41 is reflected by the reflection surface 44 a of the second reflecting mirror 44.

  Since the images displayed on the display surface 41a of the monitor 41 are reflected by the reflecting surfaces 43a and 44a of the first and second reflecting mirrors 43 and 44 as in the present embodiment, the left and right eyes 26a of the observer, The left and right virtual images 31L and 31R (see FIG. 6) generated by the refraction of the reflecting surface 44a of the second reflecting mirror 44, which are visually recognized by the user 26, are the same normal images as the image displayed on the display surface 41a of the monitor 41. Thus, the observer can perceive a three-dimensional virtual image from the left and right virtual images 31L and 31R displayed as normal images.

  Further, since the second reflecting mirror 44 is relatively close to the front with respect to the left and right eyes 26a and 26b of the observer, there is little vertical distortion, and therefore the concave cone as in the first embodiment. The left and right distortion can be reduced by using a concave plane mirror without using a mirror.

  Note that the second reflecting mirror 44 of the present embodiment may be a concave curved surface mirror in which the reflecting surface 44a is formed on a curved surface having a relatively large curvature. Further, the reflection surface 44a may be a spherical surface. Alternatively, the reflecting surface 44a may be a concave parabolic mirror formed in a shape that forms a part of the inner periphery of the rotating paraboloid. In this case, the rotation axis direction of the parabolic section is the vertical direction, and the curvature is small. The curved surface is disposed on the lower side.

[Third Embodiment]
FIG. 10 shows a third embodiment of the present invention. In the second embodiment described above, the first reflecting mirror 43 is a plane mirror. However, in the present embodiment, the first reflecting mirror 45 is formed in a shape in which the reflecting surface 45a forms a part of the outer periphery of the cylindrical shape. The convex flat mirror is arranged in the vertical direction.

  When the left and right virtual images 31L and 31R viewed by the observer with the left and right eyes 26a and 26b have distortion in the reduction direction on the left and right, the first reflecting mirror 45 is a convex plane mirror with the vertical direction as a plane, thereby reflecting the surface. The distortion can be reduced by refraction at the time of reflection from 45a. In this case, the first reflecting mirror 45 may be a concave plane mirror and the second reflecting mirror 44 may be a convex plane mirror.

[Fourth Embodiment]
FIG. 11 shows a fourth embodiment of the present invention. In the third embodiment described above, the first reflecting mirror 45 is a convex flat mirror having a plane in the up-down direction. However, in this embodiment, the first reflecting mirror 46 is a concave having a plane arranged in the left-right direction. It is a plane mirror.

  When there is distortion in the extension direction above and below the left and right virtual images 31L and 31R visually recognized by the observer with the left and right eyes 26a and 26b, the distortion is obtained by making the first reflecting mirror 46 into a concave plane mirror whose plane is the left and right direction. Can be reduced.

  The present invention is not limited to the above-described embodiment. For example, when the left and right virtual images 31L and 31R visually recognized by the observer with the left and right eyes 26a and 26b have distortion in the extension direction, the third embodiment shows the third embodiment. Distortion can be reduced by making the first reflecting mirror 45 a concave flat mirror whose plane is arranged in the vertical direction. In addition, when there is distortion in the extension direction above and below the left and right virtual images 31L and 31R visually recognized by the observer with the left and right eyes 26a and 26b, the first reflecting mirror 46 shown in the fourth embodiment is arranged in the horizontal direction. The distortion can be reduced by using a convex flat mirror disposed on the surface.

2 Stand 3 for display device Mirror stand 15 Portable image display device 15a Display unit 24 Concave cone mirror 24a Reflective surface 26a Left eye 26b Right eye 31L Left virtual image 31R Right virtual image 36 Mirror image circuit unit 40 Notebook computer 41 Monitor 41a Display surface 42 Frame 42a Mounting grooves 43, 45, 46 First reflecting mirrors 43a, 45a, 46a Reflecting surface 44 Second reflecting mirror 44a Reflecting surface δ Deviation width PD Interpupillary distance

Claims (7)

Image display means for displaying one two-dimensional image;
Reflecting means for reflecting the two-dimensional image to display a three-dimensional virtual image;
Supporting means for supporting the reflecting means,
The reflecting means includes a first reflecting mirror that reflects the two-dimensional image from the image display means, and a second reflecting mirror that reflects a reflected image from the first reflecting mirror,
The first reflecting mirror is a convex mirror and the second reflecting mirror is a concave mirror, or the first reflecting mirror is a concave mirror and the second reflecting mirror is a convex mirror;
A three-dimensional display device configured to be able to perceive a three-dimensional virtual image by an approximate parallax when the reflected image from the concave mirror is individually viewed with the left and right eyes.   The stereoscopic display device according to claim 1, wherein the concave mirror is any one of a concave plane mirror, a concave cone mirror, a concave curved surface mirror, and a concave parabolic mirror. Image display means for displaying one two-dimensional image;
Reflecting means for reflecting the two-dimensional image to display a three-dimensional virtual image;
Supporting means for supporting the reflecting means,
The reflecting means comprises at least one concave mirror;
The concave mirror is a concave conical mirror that arranges a plane vertically with respect to the image display means and reflects the two-dimensional image from the image display means upward,
A three-dimensional display device configured to be able to perceive a three-dimensional virtual image by an approximate parallax when the reflected image from the concave mirror is individually viewed with the left and right eyes. Image display means for displaying one two-dimensional image;
Reflecting means for reflecting the two-dimensional image to display a three-dimensional virtual image;
Supporting means for supporting the reflecting means,
The reflecting means includes a first reflecting mirror that reflects the two-dimensional image from the image display means, and a second reflecting mirror that reflects a reflected image from the first reflecting mirror,
The first reflecting mirror is a concave plane mirror that arranges a plane in the vertical direction and the second reflecting mirror is a concave plane mirror that arranges a plane in the horizontal direction, or the first reflector is A concave plane mirror in which the plane is disposed in the left-right direction, and the second reflecting mirror is a concave plane mirror in which the plane is disposed in the vertical direction;
A three-dimensional display device configured to be able to perceive a three-dimensional virtual image by an approximate parallax when the reflected image from the second reflecting mirror is individually viewed with the left and right eyes. The support means is a frame for fixing the first reflecting mirror and the second reflecting mirror;
The stereoscopic display device according to any one of claims 1 to 4, wherein a fixing portion that is fixed to the image display means is provided on the frame.   The image display means is one of a photograph, a book, an electronic book, a mobile phone, a digital photo frame, a portable image display device, a digital camera, a flat panel computer, a monitor for a personal computer, and a television receiver. The stereoscopic display device according to any one of claims 1 to 5.   The stereoscopic display device according to claim 1, wherein the image display unit includes a mirror image processing unit that displays the two-dimensional image by performing a mirror image process.