JP2013205730A - Electronic equipment, and display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment having high convenience.SOLUTION: Electronic equipment (1A) comprises an image creating device (2) that creates an image (V), and an element surface (S) that is inclined to an image creation surface (2a) of the image creating device and on which light from an image is made incident. The electronic equipment (1A) further includes an imaging element (4) that forms light into an image as a real image (IM1) on a real image surface (J) that is plane symmetric to the image creation surface with respect to the element surface, and a camera (3) that is arranged on a side where light from the imaging element is made incident on the real image surface.

Description

  The present invention relates to an electronic device and a display system.

  2. Description of the Related Art Conventionally, as described in the following Patent Document 1 and the like, an electronic device (bidirectional terminal) that transmits and receives an image via a network or the like and displays a partner image has been proposed. The bidirectional terminal described in Patent Document 1 includes a camera and a flat panel display (hereinafter referred to as FPD). The interactive terminal captures a first user observing the FPD with a camera provided on the upper part of the FPD, and transmits the image to another interactive terminal. The interactive terminal receives an image of the second user taken from another interactive terminal operating in the same manner, and displays the image of the second user on the FPD. In this way, a plurality of users can perform a video conference or the like while observing the image of the other party.

JP-A-6-141313

  The electronic device as described above is generally used in a positional relationship in which the user can easily see the FPD, and the distance between the camera and the user is determined by the distance at which the user can easily see the FPD. This distance is, for example, about 0.5 m, and the camera is required to have a relatively wide-angle lens so that, for example, the face above the user's chest can be accommodated. Images taken with such a camera tend to emphasize the perspective that makes the near area large and the distant area small due to the characteristics of the wide-angle lens, especially when the image is taken from other than the front so as to look down on the user. Is likely to cause a sense of incongruity.

  Such an uncomfortable feeling of the image is reduced by increasing the focal length of the lens. However, in this method, it is necessary to increase the distance from the user to the camera in order to secure the field of view of the camera. As a result, the camera is arranged by a dedicated mounting member so that the shooting range of the camera is not obstructed by the FPD. There is a need to. In this case, the angle between the line of sight of the user's eyes displayed on the FPD and the optical axis at which the camera captures the user increases, and the user's eyes are displayed on the screen displayed on the partner's FPD. An image that looks like it is clearly facing down is displayed. Therefore, it becomes difficult to communicate and the convenience (usability) of the electronic device is lowered. Furthermore, even when the electronic device as described above is not used, the camera is placed at a position away from the FPD by the length of the focal length of the lens, so that the place cannot be used for other purposes. Therefore, the convenience (usability) of the electronic device may be lowered.

  The present invention has been made in view of the above circumstances, and provides a highly convenient electronic device and display system, for example, by enabling natural images to be captured and displayed with little gaze shift. For the purpose.

  An electronic apparatus according to a first aspect of the present invention includes an image generation device that generates an image, and an element surface that is inclined with respect to the image generation surface of the image generation device and on which light from the image is incident, An imaging element that forms the image as a real image on a real image plane that is plane-symmetric with the image generation plane with respect to the element plane, and a camera that is disposed on the side on which the light from the imaging element is incident on the real image plane And comprising.

  In the electronic device of the first aspect, the line of sight for observing an image formed on the real image plane and the shooting direction of the camera are aligned, so that the line of sight reflected in the captured image by the camera and the line of sight for observing the captured image Deviation from this is reduced. Therefore, the electronic device according to the first aspect can capture and display a natural image with little line-of-sight shift, and is highly convenient.

  In the electronic device according to the first aspect, the shooting range of the camera on the real image plane may include a range where the real image is formed.

  In this electronic apparatus, the viewpoint for observing the image on the real image plane can be taken by the camera through the range where the image on the real image plane is formed, so that the line-of-sight shift is significantly reduced.

  In the electronic device of the first aspect, the imaging element has a reflecting surface that is repeatedly arranged in each of two directions orthogonal to the thickness direction of the imaging element, and viewed from the normal direction of the element surface, Each of the two directions may be a direction intersecting the image generation plane.

  Since this electronic apparatus can form an image satisfactorily on the real image surface, it is highly convenient.

  In the electronic device according to the first aspect, the camera may be disposed so as to face the center of the real image plane when viewed from the normal direction of the element surface.

  This electronic device has a much easier way to observe the image formed on the real image plane and the shooting direction of the camera, so it is possible to shoot and display natural images with little gaze shift and high convenience. Become.

  The electronic device of the first aspect includes a plurality of processing units including the image generation device and the camera paired with the image generation device, and the reflecting surfaces of the imaging elements face each other in the first direction. A first set of reflecting surfaces intersecting each other and a second set of reflecting surfaces intersecting each other in the second direction, and the image generating device of the first processing unit includes the first image generating surface as the first reflecting surface. The image generation device of the second processing unit may be arranged with the image generation surface facing the second set of reflection surfaces.

  In this electronic apparatus, a plurality of processing units form images on the respective real image planes, and each of the plurality of images can be observed from a viewpoint corresponding to each processing unit. For this reason, this electronic device can handle, for example, a plurality of users, and is highly convenient. In addition, such an electronic device can use a common imaging element as compared with a configuration corresponding to a plurality of users by using a plurality of electronic devices having one image generation device.

  In the electronic device according to the first aspect, the image generation device may include a flat panel display having the image generation surface as a screen.

  This electronic apparatus can display an image displayed on the screen of a flat panel display by forming it on a real image plane, thereby reducing the device cost.

  In the electronic device according to the first aspect, the image generation device may include a screen disposed on the image generation surface and a projector that projects the image on the screen.

  This electronic device can display an image projected by a projector on a screen by forming an image on a real image surface, and can display a bright image.

  The display system according to the second aspect shows a plurality of electronic devices according to the first aspect, first image data indicating images taken by the camera, and images formed by the image generation device between the plurality of electronic devices. A transmission / reception device for transmitting / receiving the second image data.

  The display system according to the second aspect displays, for example, a photographed image obtained by photographing the user of the first electronic device using the second electronic device, and photographs the user of the second electronic device that observes the photographed image. The captured image can be displayed by the first electronic device. As described above, since the electronic device according to the first aspect can capture and display an image with little line-of-sight shift, such a display system allows a plurality of users to observe each other with little line-of-sight shift. Can be made more convenient.

It is a figure which shows the display system in 1st Embodiment. It is a figure which shows the electronic device in 1st Embodiment. (A) is a figure which shows the structure of a retrotransmissive material, (B) is an enlarged view of (A). (A)-(E) are figures which show the principle of the image formation by a retrotransmissive material. It is a figure which shows the modification 1 of a retrotransmissive material. It is a figure which shows the modification 2 of a retrotransmissive material. It is a figure which shows the electronic device in 2nd Embodiment. It is a figure which shows the electronic device in 3rd Embodiment.

  Next, an embodiment will be described. In the embodiment, the same elements are denoted by the same reference numerals, and the description thereof may be simplified or omitted.

[First Embodiment]
FIG. 1 is a diagram schematically showing a schematic configuration of a display system SYS of the present embodiment. The display system SYS of the present embodiment is used for, for example, a video conference and can display images of the other party in real time with respect to a plurality of users.

  The display system SYS of the present embodiment includes a plurality of functional units (a first functional unit Q1 and a second functional unit Q2) connected so as to communicate with each other via a communication line L such as the Internet or a LAN.

  The first function unit Q1 displays an image (real image IM1) and photographs a viewpoint (first user K1) that can observe the real image IM1. Then, the first function unit Q1 transmits, for example, first image data Da1 indicating a captured image obtained by capturing the first user K1 to the second function unit Q2 via the communication line L.

  Based on the first image data Da1 received from the first function unit Q1, the second function unit Q2 displays, for example, a real image IM2 of an image showing the first user K1. Further, the second function unit Q2 captures a viewpoint (second user K2) that can observe the displayed real image IM2. Then, the second function unit Q2 transmits, for example, second image data Da2 indicating a captured image obtained by capturing the second user K2 to the first function unit Q1 via the communication line L.

  Based on the second image data Da2 received from the second function unit Q2, the first function unit Q1 displays, for example, a real image IM1 of an image showing the second user K2. In this way, each of the first user K1 and the second user K2 can observe an image (real image) showing the other party.

  The first functional unit Q1 of the present embodiment includes a first bidirectional terminal 1A (electronic device) and a first transmission / reception device T1. Although the configuration of the first bidirectional terminal 1A will be described later, the first interactive terminal 1A can form a real image IM1 and can photograph a position (viewpoint) where the real image IM1 can be observed.

  The first transmission / reception device T1 can be connected to the communication line L and can communicate with the second functional unit Q2 via the communication line L. In the present embodiment, the first transmission / reception device T1 includes, for example, a computer, a portable information terminal, and the like, and controls the first bidirectional terminal 1A.

  Specifically, the first transmission / reception device T1 receives the second image data Da2 from the second function unit Q2 via the communication line L. The first transmission / reception device T1 supplies the received second image data Da2 to the first bidirectional terminal 1A, and controls the first bidirectional terminal 1A to form a real image IM1. Further, the first transmission / reception device T1 controls the first bidirectional terminal 1A to capture an image, and acquires first image data Da1 indicating the captured image from the first interactive terminal 1A. The first transmission / reception device T1 transmits the acquired first image data Da1 to the second function unit Q2 via the communication line L.

  The second functional unit Q2 includes a second bidirectional terminal 1B and a second transmission / reception device T2. In the present embodiment, the second functional unit Q2 has the same configuration and function as the first functional unit Q1, and the description thereof is simplified. The second transmission / reception device T2 can be connected to the communication line L, and can receive the first image data Da1 and transmit the second image data Da2 with the first function unit Q1. Further, the second transmission / reception device T2 controls the second bidirectional terminal 1B to form the real image IM2 on the second bidirectional terminal 1B, and causes the viewpoint for observing the real image IM2 to be photographed.

  Next, the configuration of the first bidirectional terminal 1A will be described. FIG. 2 is a diagram showing the first interactive terminal 1A in the present embodiment. FIG. 3 is a diagram showing the configuration of the retropermeable material 4, FIG. 3A is a plan view seen from the thickness direction of the retropermeable material 4, and FIG. It is a perspective view which expands and shows a part.

  As shown in FIGS. 1 and 2, the first bidirectional terminal 1A includes an FPD 2 (image generation device), a camera 3 (imaging device), and a retrotransmissive material 4 (imaging element).

  The FPD 2 displays the image V on the image display surface 2a (image generation surface) based on the image data (for example, the second image data Da2) input from the first transmission / reception device T1. The image V includes, for example, an image showing a person, an image showing a landscape, an image showing characters, and the like. The FPD 2 may be a general display such as a liquid crystal display, a plasma display, or an organic EL display.

  As shown in FIGS. 3 (A) and 3 (B), the retrotransmissive material 4 has a plurality of rectangular column shapes through which light passes (transmits) through a plate material 7 such as rectangular glass having a predetermined thickness. The opening 8 is provided. The plate member 7 has two main surfaces 7a and 7b substantially parallel to each other, and light incident from one main surface 7a side is emitted from the other main surface 7b side.

  In the present embodiment, the positional relationship and the like of each part of the first bidirectional terminal 1A may be described with reference to the XYZ orthogonal coordinate system shown in FIG. In this XYZ orthogonal coordinate system, two directions orthogonal to each other on the element surface S of the retrotransmissive material 4 are the X direction and the Y direction, and the thickness direction of the retrotransmissive material 4 (the normal direction of the element surface S) is Z direction. Moreover, the V1 direction shown in FIG.1 and FIG.2 is a direction which cross | intersects each of X direction and Y direction in XY plane, for example, is a diagonal direction of the retrotransmissive material 4. FIG.

  The element surface S is a plane parallel to the main surface 7a and the main surface 7b of the plate 7 and passes through the center of the plate 7 (the distance from the main surface 7a is the same as the distance from the main surface 7b). Flat surface. The element surface S may be a plane that passes through the center in the thickness direction of the plate material 7 and is orthogonal to the thickness direction (Z direction) of the plate material 7.

  The openings 8 are repeatedly arranged in two directions (X direction and Y direction) perpendicular to each other on the plate material 7. The planar shape of the opening 8 viewed from the normal direction of the element surface S is, for example, a square. In the retrotransmissive material 4 of the present embodiment, when viewed from the thickness direction (Z direction) of the plate material 7 (in plan view), each side of the opening 8 is substantially parallel to each side of the plate material 7.

  Thus, the retrotransmissive material 4 has a periodic structure (opening 8) in each of two directions (here, the X direction and the Y direction), and the element surface S has the retrotransmissive material. It is good also as a virtual plane inside 4 and a surface parallel to each of two directions where a periodic structure is located.

  The opening 8 is configured to function as a light passing part through which light passes. The opening 8 may be a space (gap) inside, or may be filled with a highly transparent resin material or the like.

  Two inner wall surfaces orthogonal to each other among the four inner wall surfaces of the opening 8 are reflective surfaces 9 (first reflective surface 9a and second reflective surface 9b). The reflecting surface 9 is made of, for example, a metal reflecting film formed on the inner wall surface of the opening 8.

  The 1st reflective surface 9a and the 2nd reflective surface 9b comprise what is called a 2 surface corner reflector. The first reflecting surface 9a and the second reflecting surface 9b face any direction between the + X direction and the + Y direction (first quadrant) with the center of each opening 8 as the origin in any of the plurality of openings 8. ing.

  The configuration in which two inner wall surfaces orthogonal to each other among the inner wall surfaces of the opening 8 are reflection surfaces has been described. However, all four inner wall surfaces of the opening 8 may be reflection surfaces 9, and in the present embodiment, The four inner wall surfaces of the opening 8 are all reflective surfaces 9. Of the reflecting surfaces 9, the third reflecting surface 9c is orthogonal to the second reflecting surface 9b and faces the first reflecting surface 9a substantially in parallel. Of the reflecting surfaces 9, the fourth reflecting surface 9d is orthogonal to the third reflecting surface 9c and faces the second reflecting surface 9b substantially in parallel.

  A pair of reflecting surfaces that intersect and are adjacent to each other in the reflecting surface 9 face the same direction, and light can enter from this direction. For example, the second reflecting surface 9b and the third reflecting surface 9c face an arbitrary direction between the + X direction and the -Y direction (fourth quadrant). Further, the third reflecting surface 9c and the fourth reflecting surface 9d face an arbitrary direction between the −X direction and the −Y direction (third quadrant). Further, the fourth reflecting surface 9d and the first reflecting surface 9a face an arbitrary direction between the −X direction and the + Y direction (second quadrant).

  As shown in FIG. 2, when viewed from the side parallel to the element surface S and the image display surface 2a, the FPD 2 is configured such that the image display surface 2a is inclined non-perpendicular to the element surface S of the retrotransmissive material 4. Have been placed.

  Further, as shown in FIG. 3A, when viewed from the direction perpendicular to the element surface S of the retrotransmissive material 4, the FPD 2 has the normal direction of the image display surface 2a as the arrangement direction of the openings 8 (X direction). , Y direction). In other words, when the FPD 2 is viewed from the direction perpendicular to the element surface S of the retrotransmissive material 4, the normal direction of the image display surface 2 a is an angle at which the two reflecting surfaces 9 of the opening 8 of the retrotransmissive material 4 contact each other. It is inclined and arranged so as to face the part side.

  Due to the positional relationship between the FPD 2 and the retrotransmissive material 4, the light emitted from the image display surface 2 a of the FPD 2 is approximately in the direction of the corner where the two reflecting surfaces 9 of the opening 8 of the retrotransmissive material 4 are in contact. Proceed toward. In FIG. 1, the illustration of the opening 8 of the retrotransmissive material 4 is omitted for easy understanding of the drawing. The position of the corner where the two reflecting surfaces 9 of the opening 8 of the retrotransmissive material 4 contact corresponds to the position of the corner indicated by R in FIG. To do.

  Here, the effect | action of the retrotransmissive material 4 is demonstrated using FIG. 4 (A)-(E). In FIG. 4, a point P indicates a point at which light on the image V illustrated in FIG. 2 is emitted, for example, each pixel on the FPD 2. A point T indicates a point (incident position) where light emitted from the point P enters the reflecting surface 9 of the retrotransmissive material 4. A point Q indicates a point where light emitted from the point P and passing through the retrotransmissive material 4 is imaged. 4D and 4E are a plan view and a side view, respectively, in which the vicinity of the point T is enlarged.

  As described above, the two reflecting surfaces 9 (the first reflecting surface 9a and the second reflecting surface 9b) of the retrotransmissive material 4 are orthogonal to each other. Therefore, as shown in FIG. 4D, the light incident on the second reflecting surface 9b is reflected by the second reflecting surface 9b, then enters the first reflecting surface 9a, and is reflected by the first reflecting surface 9a. , It proceeds in the direction opposite to the direction when it enters the second reflecting surface 9b. Therefore, the light incident on the reflecting surface 9 is the same as the incident direction as seen from a direction (Z direction) orthogonal to the element surface S as shown in FIG. Reflect in the direction. For this reason, the projected point obtained by projecting the point Q on the XY plane substantially coincides with the projected point obtained by projecting the point P on the XY plane.

  Further, the light incident on the reflecting surface 9 is in the normal direction of the incident surface with respect to the retrotransmissive material 4 (the normal direction of the triangle PTQ formed by the points P, T, and Q) as shown in FIG. From the perspective, the light is reflected by the first reflecting surface 9a and the second reflecting surface 9b. Therefore, as shown in FIG. 4C, the light incident on the reflecting surface 9 is reflected at the same reflection angle a as the incident angle a, equivalent to the case where a plane mirror is placed so as to be orthogonal to the incident surface. .

  Thus, the light emitted from the point P goes to the point Q through the point T as shown in FIG. Generally, the light emitted from the point P on the image V is diffused within a certain range of angles, so that the light is also incident on portions other than the point T of the retrotransmissive material 4. Since the light diffused from the point P is similarly reflected at locations other than the point T, it is focused on the point Q. That is, the image V located on one side of the element surface S is imaged at a plane symmetrical position (real image plane J) with respect to the element surface S in the space on the other side of the element surface S.

  Here, the light emitted from one point of the planar image V from P has been described, but the light emitted from each point on a three-dimensional object or image having a finite size is similarly imaged. Therefore, when a three-dimensional object exists below the retrotransmissive material 4, a real image that is plane-symmetric with respect to the element surface S of the retrotransmissive material 4 is formed as a three-dimensional image around the point Q.

  When observing the point Q on the real image, the light rays from the straight line connecting the observation point and the point Q are selectively viewed, and the real image appears to float in space when observed with both eyes. Further, as described above, since the retrotransmissive material 4 has the opening 8 that penetrates in the direction perpendicular to the element surface S, the retrotransmissive material 4 is incident on the element surface S of the retrotransmissive material 4 perpendicularly. The light travels straight without entering the reflecting surface 9.

  In the present embodiment, as shown in FIG. 2, the FPD 2 is inclined and installed below the element surface S of the retrotransmissive material 4. Therefore, the real image surface J is disposed in a space above the element surface S of the retrotransmissive material 4 in a direction symmetrical to the inclination of the image display surface 2 a of the FPD 2. The retrotransmissive material 4 forms, on such a real image surface J, a real image IM1 in which the image V on the image display surface 2a is plane-symmetric. In this case, since the image display surface 2a of the FPD 2 is a flat surface, the formed real image IM1 has a different inclination from that of the image V, and is a flat image having substantially the same shape and dimensions.

  Therefore, if the observer K (user) looks into the direction of the real image IM1 obliquely from the direction in which the real image plane J is inclined, the real image IM1 is in a substantially opposite state to the observer K, and the real image IM1 Makes it easier to see. Since the real image IM1 is formed by the light reflected by the retrotransmissive material 4, the observer K seems to float the real image IM1 in the space within the observation range where the retrotransmissive material 4 can be seen. Looks like.

  Next, the camera 3 will be described. The camera 3 (photographing device) includes an image sensor such as a CCD sensor and a CMOS sensor, a photographing lens, an autofocus mechanism, and the like, and a general camera can be used.

  As shown in FIG. 2, the camera 3 is arranged on the side where light enters from the retrotransmissive material 4 with respect to the real image plane J. That is, the camera 3 is arranged so that the real image plane J is sandwiched between the camera 3 and the viewpoint (observer K) that observes the real image IM1. Accordingly, when the observer K observes the real image IM1 formed on the real image plane J from the front, for example, the observer K sees the camera 3 behind the real image IM1.

  At least a part of the camera 3 is disposed below the real image plane J, and is fixed to the retrotransmissive material 4, for example. The camera 3 is disposed so as to look upward from the element surface S. That is, the photographing direction Dp (incident side optical axis of the photographing lens) of the camera 3 is inclined so as to approach the real image surface J from the element surface S. In this case, the shooting direction Dp of the camera 3 connects the viewpoint (observer K) observing the real image IM1 and a point on the real image IM1, as compared with the case where the camera 3 is disposed above the real image plane J. It becomes nearly parallel to the line (line of sight Kv). The shooting range 3a on the real image plane J of the camera 3 is set so as to include at least a part of the image forming range Ja where the real image IM1 is formed on the real image plane J.

  As shown in FIG. 3A, the camera 3 is arranged so that the photographing direction Dp passes through the real image forming range Ja in which the real image IM1 on the real image plane J can be formed. For example, the camera 3 is arranged so as to face the center Jc of the real image plane J when viewed from the normal direction of the element surface S. Note that the real image formation range Ja is, for example, a range optically conjugate with the range in which the image V is displayed on the image display surface 2a of the FPD 2.

  The first bidirectional terminal 1A configured as described above has a viewpoint (first user K1) for observing the real image IM1 by the camera 3 disposed on the side where light enters the real image plane J from the retrotransmissive material 4. Take a picture. Therefore, the first bidirectional terminal 1A obtains a captured image in which the imaging direction Dp and the line of sight Kv are close to each other and the line of sight Kv faces the camera 3. As described above, the first bidirectional terminal 1A can capture and display a natural image with little line-of-sight shift, and is highly convenient. For example, the first interactive terminal 1A can reduce the line-of-sight shift between the observer (second user K2) of the second interactive terminal 1B who observes such a captured image and the first user K1. As a result, since the display system SYS enables smooth communication between users, for example, in a video conference, the display system is highly convenient.

  By the way, it is assumed that the observer (first user K1) of the real image IM1 determines the positional relationship with the first interactive terminal 1A so that the real image IM1 can be easily seen. In this case, it is assumed that the line of sight Kv for observing the real image IM1 often faces the real image formation range Ja where the real image IM1 is formed and faces the center Jc of the real image plane J. In the first bidirectional terminal 1A of the present embodiment, the shooting range 3a on the real image plane J of the camera 3 includes at least a part of the real image formation range Ja where the real image on the real image plane J is formed. The deviation can be significantly reduced. Further, in the first bidirectional terminal 1A, the camera 3 is arranged so as to face the center Jc of the real image plane J when viewed from the normal direction of the element surface S, so that the line-of-sight shift can be significantly reduced. .

  Further, in the first interactive terminal 1 </ b> A of the present embodiment, the camera 3 is disposed in the vicinity of the retrotransmissive material 4. Therefore, the first bidirectional terminal 1A can use a lens having a relatively long focal length as the photographing lens of the camera 3, and can photograph an image with little distortion. Moreover, since the camera 3 is arrange | positioned in the vicinity of the retrotransmissive material 4 in the 1st bidirectional | two-way terminal 1A, the attachment components etc. which are required for attachment of the camera 3 can be simplified. Thereby, 1 A of 1st bidirectional | two-way terminals can reduce the arrangement | positioning space of an attachment component, etc., for example, when not displaying an image, can also use the retrotransmissive material 4 as a desk.

  In addition, since the first bidirectional terminal 1A generates the image V by the FPD 2, the device cost can be reduced. In addition, the first bidirectional terminal 1 </ b> A can prevent dust and the like from adhering to the FPD 2 because the retrotransmissive material 4 is disposed above the FPD 2.

  Next, a modified example of the retrotransmissive material 4 will be described.

  FIG. 5 is a perspective view showing Modification Example 1 of the retrotransmissive material 4. A retrotransmissive material 11 shown in FIG. 5 is a combination of a plurality of plate materials 12 such as metal or glass having both surfaces or one surface as a reflection surface, which are orthogonal to each other. When only one surface of the plate material 12 is a reflection surface, the plate material 7 is arranged so that a pair of reflection surfaces that intersect with each other face the image generation surface of the image generation apparatus. Air may exist in the space between the adjacent board | plate materials 12, and the resin material etc. with high transparency may be filled.

  FIG. 6 is a perspective view showing Modification Example 2 of the retrotransmissive material 4. The retrotransmissive material 13 shown in FIG. 6 makes two sets of a plurality of glass materials 14 arranged so that one surface in the longitudinal direction of the prismatic glass material 14 is a mirror surface and the mirror surfaces are directed in the same direction. Two sets are stacked so as to be orthogonal to each other.

[Second Embodiment]
Next, a second embodiment will be described with reference to FIG. The bidirectional terminal 21 (electronic device) of the present embodiment is different from the first embodiment in the configuration of the image generation apparatus, and the other configurations are the same as those in the first embodiment.

  FIG. 7 is a perspective view schematically showing a schematic configuration of the bidirectional terminal 21 of the present embodiment. In FIG. 7, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof may be simplified or omitted.

  The bidirectional terminal 21 according to the present embodiment includes a projection system 22 (image generation device), a camera 3, and a retrotransmissive material 4 (imaging element). The projection system 22 includes a transmissive screen 23 and a projector 24 that projects an image V onto the screen 23.

  In the present embodiment, the screen 23 is disposed in place of the FPD 2 at the position of the FPD 2 of the first embodiment. That is, the screen 23 is arranged so that the image display surface 23 a of the screen 23 is inclined with respect to the element surface S of the retrotransmissive material 4.

  As described in the first embodiment, the bidirectional terminal 21 configured as described above can reduce line-of-sight shift and is highly convenient. Further, since the bidirectional terminal 21 generates the image V by the projection system 22, the degree of freedom of the screen size is increased. The bidirectional terminal 21 can also display a bright real image IM1 by increasing the screen gain, for example.

[Third Embodiment]
Next, a third embodiment will be described with reference to FIG. The bidirectional terminal 30 (electronic device) of the present embodiment is different from the first embodiment in that it includes a plurality of processing units that form a real image and acquire a captured image.

  FIG. 8 is a perspective view schematically showing a schematic configuration of the bidirectional terminal 30 of the present embodiment. In this embodiment, the retrotransmissive material 4 has a large number of openings 8 as shown in FIGS. 3 (A) and 3 (B). One of them is typically enlarged and schematically shown.

  The bidirectional terminal 30 illustrated in FIG. 8 includes a first processing unit 31, a second processing unit 32, a third processing unit 33, and a fourth processing unit 34 as a plurality of processing units. These processing units have the same configuration, but the positional relationship of the retrotransmissive material 4 with respect to the reflection surface 9 is different from each other.

  The first reflecting surface 9a and the second reflecting surface 9b of the retrotransmissive material 4 are orthogonal to each other in the first quadrant direction in the first quadrant with the center of the opening 8 as the origin. The 1st process part 31 is arrange | positioned so that a real image may be formed using the 1st reflective surface 9a and the 2nd reflective surface 9b. That is, the image generation device 35 of the first processing unit 31 is arranged with the image generation surface 35a facing the first reflection surface 9a and the second reflection surface 9b when viewed from the normal direction of the element surface S. The camera 36 of the first processing unit 31 is arranged on the light incident side from the retrotransmissive material 4 to the real image plane J1 with respect to the real image plane J1 with respect to the image generation device 35.

  Note that the image generation apparatus 35 may be the FPD 2 described in the first embodiment, or the projection system 22 described in the second embodiment. The same applies to the second to fourth processing units 32 to 34.

  The second reflection surface 9b and the third reflection surface 9c are orthogonal to each other in the fourth quadrant direction (the rotation angle is greater than 270 ° and less than 360 °). The 2nd process part 32 is arrange | positioned so that a real image may be formed using the 2nd reflective surface 9b and the 3rd reflective surface 9c. The image generation device 37 of the second processing unit 32 is arranged with the image generation surface 37a facing the second reflection surface 9b and the third reflection surface 9c when viewed from the normal direction of the element surface S. The camera 38 of the second processing unit 32 is disposed on the light incident side from the retrotransmissive material 4 to the real image plane J2 with respect to the real image plane J2 corresponding to the image generation device 37.

  The third reflecting surface 9c and the fourth reflecting surface 9d are orthogonal to each other in the third quadrant direction (the rotation angle is greater than 180 ° and smaller than 270 °). The 3rd process part 33 is arrange | positioned so that a real image may be formed using the 3rd reflective surface 9c and the 4th reflective surface 9d. The image generation device 39 of the third processing unit 33 is disposed with the image generation surface 39a facing the third reflection surface 9c and the fourth reflection surface 9d when viewed from the normal direction of the element surface S. The camera 40 of the third processing unit 33 is disposed on the light incident side from the retrotransmissive material 4 to the real image plane J3 with respect to the real image plane J3 corresponding to the image generation device 41.

  The fourth reflecting surface 9d and the first reflecting surface 9a are orthogonal to each other in the second quadrant direction (the rotation angle is greater than 90 ° and smaller than 180 °). The 4th process part 34 is arrange | positioned so that a real image may be formed using the 4th reflective surface 9d and the 1st reflective surface 9a. The image generation device 41 of the fourth processing unit 34 is arranged with the image generation surface 41a facing the fourth reflection surface 9d and the first reflection surface 9a when viewed from the normal direction of the element surface S. The camera 42 of the fourth processing unit 34 is arranged on the light incident side from the retrotransmissive material 4 to the real image plane J4 with respect to the real image plane J4 corresponding to the image generation device 42.

  In the present embodiment, in the bidirectional terminal 30, a plurality of processing units 31 to 34 form images on the respective real image planes J1 to J4, and each of the plurality of images can be observed from a viewpoint corresponding to each processing unit. it can. These four viewpoints are arranged, for example, at the corners of the rectangular retrotransmissive material 4. In the bidirectional terminal 30 according to the present embodiment, auxiliary members 44 having a rectangular outer periphery are provided outside the retrotransmissive material 4, and corners (viewpoints) of the retrotransmissive material 4 are provided on each side of the outer periphery of the auxiliary member 44. ) Is arranged.

  The bidirectional terminal 30 configured as described above can handle, for example, four users, and is highly convenient. Further, such a bidirectional terminal 30 uses a plurality of first bidirectional terminals having one image generating device and uses a common recursive transmission material 4 as compared with a configuration corresponding to a plurality of users. can do.

  In the present embodiment, the number of processing units is four, but may be two or three. When the number of processing units is 2 or 3, the position of the processing unit can be appropriately selected from the first processing unit 31 to the fourth processing unit 34 described above.

  The technical scope of the present invention is not limited to the above embodiment. The requirements described in the above embodiments can be combined as appropriate. In addition, at least one of the requirements described in the above embodiment may be omitted.

DESCRIPTION OF SYMBOLS 1A ... 1st interactive terminal (electronic device), 1B ... 2nd interactive terminal (electronic device), 2a ... Image display surface (image generation surface), 3 ... Camera, 3a ...・ Shooting range, 4... Retroreflective material (imaging element), 9... Reflective surface, 11 and 13. Equipment), 23 ... screen, 23a ... image display surface (image generation surface), 24 ... projector, 30 ... interactive terminal (electronic device), 31 ... first processing unit, 32 ... 2nd processing part, 33 ... 3rd processing part, 34 ... 4th processing part, 35, 37, 39, 41 ... Image generation apparatus, 35a, 37a, 39a, 41a ... Image generation plane, 36, 38, 40, 42 ... camera, Da1 ... first image data, Da2 ... second image data, I DESCRIPTION OF SYMBOLS 1 ... Real image (image), IM2 ... Real image (image), J, J1, J2, J3, J4 ... Real image surface, Jc ... Center, SYS ... Display system, T1 ... First transmission / reception device, T2 ... second transmission / reception device, V ... image

Claims (8)

An image generating device for generating an image;
The image generation device has an element surface that is inclined with respect to the image generation plane and on which light from the image is incident, and the image is combined as a real image on a real image plane that is plane-symmetric with the image generation plane with respect to the element plane. An imaging element for imaging;
An electronic device comprising: a camera disposed on a side on which the light from the imaging element is incident on the real image plane. The electronic device according to claim 1, wherein a shooting range of the camera on the real image plane includes a range where the real image is formed. The imaging element has a reflecting surface that is repeatedly arranged in each of two directions orthogonal to the thickness direction of the imaging element;
The electronic apparatus according to claim 1, wherein each of the two directions is a direction intersecting with the image generation plane when viewed from a normal direction of the element surface. The electronic device according to claim 1, wherein the camera is disposed so as to face a center of the real image plane when viewed from a normal direction of the element surface. A plurality of processing units including the image generation device and the camera paired with the image generation device;
The reflective surfaces of the imaging element include a first set of reflective surfaces that intersect each other in the first direction, and a second set of reflective surfaces that intersect each other in the second direction,
The image generation device of the first processing unit is arranged with the image generation surface facing the first set of reflection surfaces,
5. The electronic device according to claim 3, wherein the image generation device of the second processing unit is arranged with the image generation surface facing the second set of reflection surfaces. 6. The electronic device according to any one of claims 1 to 5, wherein the image generation device includes a flat panel display having the image generation surface as a screen. The image generation device includes:
A screen disposed on the image forming surface;
The electronic device according to claim 1, further comprising: a projector that projects the image on the screen. A plurality of electronic devices according to any one of claims 1 to 7;
A display system comprising: a transmission / reception device that transmits and receives first image data indicating an image captured by the camera and second image data indicating an image formed by the image generation device between the plurality of electronic devices.

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