JP2010008501A - Stereoscopic display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device through which alone a plurality of stereoscopic images can be observed simultaneously without any disturbance of view. <P>SOLUTION: The stereoscopic display device is provided with a hollow casing body 2 having an opening part, a first stereoscopic display part 3, a second stereoscopic display part 4, and a half mirror 5. The first stereoscopic display part 3 has a first display panel 11 and a second display panel 12 disposed inside the casing body 2. The second stereoscopic display part 4 has a third display panel 13 arranged side by side with the first display panel 11 and has a fourth display panel 14 arranged side by side with the second display panel 12. The half mirror 5 disposed inside the casing body 2 transmits image light L1 and L2 from the first and third display panels 11 and 13, and reflects image light R1 and R2 from the second and fourth display panels 12 and 14 to the opening part 2a side. In this way, a plurality of stereoscopic images can be observed by the stereoscopic image display device 1 alone. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stereoscopic display device using the parallax between human eyes.

  Conventionally, as this type of stereoscopic display device, for example, there is a device described in Patent Document 1. The stereoscopic display device described in Patent Literature 1 includes a half mirror fixed to a housing, a first liquid crystal display device that displays a screen for one eye, and a second screen that displays a screen for the other eye. Liquid crystal display device. The half mirror transmits the image light of one of the first liquid crystal display device and the second liquid crystal display device and reflects the image light from the other liquid crystal display device.

In addition, the user can experience a stereoscopic image by viewing the image light of the stereoscopic display device through polarizing glasses including the first polarizing plate for one eye and the second polarizing plate for the other eye. be able to. That is, the image light from the first liquid crystal display device passes through the first polarizing plate of the polarizing glasses and reaches one eye of the user. Then, the image light from the second liquid crystal display device passes through the second polarizing plate of the polarizing glasses and reaches the other eye of the user. Thereby, the user can experience a stereoscopic effect with the parallax of both eyes.
JP 2005-257901 A

  However, conventional stereoscopic display devices cannot simultaneously experience a plurality of stereoscopic images. Therefore, in order to experience a plurality of stereoscopic images simultaneously, a plurality of stereoscopic display devices must be prepared, which is uneconomical. In addition, when a plurality of stereoscopic display devices are prepared and arranged side by side, there is a problem that the housing of adjacent stereoscopic display devices becomes an obstacle and the view is blocked.

  An object of the present invention is to provide a three-dimensional display device that allows a user to experience a plurality of three-dimensional images at the same time without disturbing the field of view in consideration of the above-described problems.

  In order to solve the above-described problems and achieve the object of the present invention, the stereoscopic display device of the present invention includes a hollow housing having an opening opened on the front surface. It has a first three-dimensional display unit comprising a first display panel provided on the back surface portion in the housing facing the opening and a second display panel provided on the bottom surface portion in the housing. Furthermore, the first display panel and the display surface are arranged side by side in the same direction on the back surface in the housing, and the second display panel and the display surface in the same direction on the bottom surface in the housing. And a second stereoscopic display unit including a fourth display panel provided side by side. And it is provided in a housing | casing, the image light from a 1st display panel and a 3rd display panel is permeate | transmitted, and the image light from a 2nd display panel and a 4th display panel is reflected to the opening part side. It has a half mirror.

  According to the stereoscopic display device of the present invention, since no partition is provided between the first stereoscopic display unit and the second stereoscopic display unit, it is possible to experience a plurality of stereoscopic images at the same time without blocking the view. it can.

Hereinafter, exemplary embodiments of the stereoscopic display device of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure. The present invention is not limited to the following form.
1. Configuration of 3D Display Device First, the configuration of the 3D display device of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a stereoscopic display device of the present invention, FIG. 2 is an exploded perspective view showing a state in which a half mirror is removed from a housing, and FIG. 3 is an explanatory diagram showing a schematic configuration of the stereoscopic display device of the present invention. FIG. FIG. 4 is a schematic view showing a cross-sectional view of the stereoscopic display device.

A stereoscopic display device according to an embodiment of the present invention (hereinafter referred to as “this example”) displays a stereoscopic image using parallax between human eyes. That is, the user can experience a stereoscopic image by wearing polarized glasses (to be described later) and watching the image light from this apparatus. As shown in FIGS. 1 and 2, the stereoscopic display device 1 includes a casing 2, a first stereoscopic display unit 3 and a second stereoscopic display unit 4 mounted on the casing 2, and a casing 2. And a control unit 6.
[Case]
The housing | casing 2 has the opening part 2a by which all the one surfaces which are the front surfaces were opened, and are formed in hollow. The housing 2 includes a substantially trapezoidal bottom surface portion 2b, a substantially rectangular back surface portion 2c that is substantially perpendicular to the short side of the bottom surface portion 2b, and a substantially trapezoidal top surface portion 2d that faces the bottom surface portion 2b. have. Further, the housing 2 has a left side surface portion 2e that is substantially perpendicular to the left end of the bottom surface portion 2b, and a right side surface portion 2f that is substantially perpendicular to the right end of the bottom surface portion 2b. .

The area of the opening 2a is set to be larger than the area of the opposing back surface 2c. And the housing | casing 2 is formed so that it may spread from the back part 2c to the opening part 2a, and the opening part 2a is expanded greatly. Thereby, the inside of the housing | casing 2 can be looked at from diagonally forward of the housing | casing 2, and the angle which can visually recognize a stereo image can be widened. Further, a recess 7 that is recessed in a substantially rectangular shape is formed in the bottom surface portion 2b. The first 3D display unit 3 and the second 3D display unit 4 are mounted in the internal space of the housing 2.
[First stereoscopic display unit / second stereoscopic display unit]
The first 3D display unit 3 includes a first display panel 11 and a second display panel 12. Each of the first display panel 11 and the second display panel 12 has a horizontally-long rectangular flat plate shape. The first display panel 11 is disposed on one side in the longitudinal direction of the back surface portion 2c of the housing 2 with the video display surface facing the opening 2a. The first display panel 11 displays an image for one eye of the user.

  The second display panel 12 is disposed on one side in the longitudinal direction of the recess 7 provided in the bottom surface 2 b of the housing 2. On the second display panel 12, an image for the other eye opposite to the first display panel 11 is displayed, and the polarization direction is set to the same direction as the first display panel 11. Note that the sizes of the first display panel 11 and the second display panel 12 are set to be substantially the same. As shown in FIGS. 3 and 4, the center line extending from the center of the second display panel 12 overlaps the center line extending from the center of the first display panel 11 with a half mirror 5 described later.

  The second stereoscopic display unit 4 includes a third display panel 13 and a fourth display panel 14. Similar to the first and second display panels 11 and 12, the third display panel 13 and the fourth display panel 14 have a horizontally-long rectangular flat plate shape. The third display panel 13 is disposed on the other side in the longitudinal direction of the back surface portion 2c of the housing 2 with the video display surface facing the opening 2a. That is, the third display panel 13 is arranged side by side with the display surface of the first display panel 11 of the first stereoscopic display unit 3 facing the same direction. Then, similarly to the first display panel 11, the third display panel 13 displays an image for one eye.

The fourth display panel 14 is disposed on the other side in the longitudinal direction of the concave portion 7 provided in the bottom surface portion 2 b of the housing 2. The fourth display panel 14 displays an image for the other eye opposite to the third display panel 13, and the polarization direction is set to the same direction as the third display panel 13. Note that the sizes of the third display panel 13 and the fourth display panel 14 are set to be substantially the same. As shown in FIGS. 3 and 4, the center line extending from the center of the fourth display panel 14 overlaps the center line extending from the center of the third display panel 13 by a half mirror 5 described later.
[Display panel]
Next, a detailed configuration of the first to fourth display panels 11 to 14 will be described with reference to FIG. Since the first to fourth display panels 11 to 14 have the same configuration, only the first display panel 11 will be described here. FIG. 5 is a cross-sectional view of the display panel 11.

  The display panel 11 shown in this example is a liquid crystal display panel. As shown in FIG. 5, the display panel 11 includes a display unit 21, two polarizing plates 22 a and 22 b that sandwich the display unit 21, and a backlight panel 23.

  The display unit 21 is configured by laminating two flat glass substrates 24a and 24b, a color filter 25, two transparent electrodes 26a and 26b, and a liquid crystal material 27 sandwiched between two alignment films 28a and 28b. Has been. The first glass substrate 24a is provided with a first transparent electrode 26a on one surface thereof. The first transparent electrode 26a is formed in a flat plate shape and has an area substantially equal to that of the first glass substrate 24a. In the first transparent electrode 26a, the liquid crystal material 27 sandwiched between the two alignment films 28a and 28b is disposed on one surface opposite to the surface on which the first glass substrate 24a is provided. The areas of the two alignment films 28a and 28b are set smaller than those of the first glass substrate 24a and the first transparent electrode 26a.

  A flat plate-like second transparent electrode 26b is provided on one surface of the alignment film 28b located on the opposite side to the first transparent electrode 26a of the two alignment films 28a and 28b. Examples of the material of the first transparent electrode 26a and the second transparent electrode 26b include ITO (tin-doped indium oxide). The second transparent electrode 26b is provided with a flat color filter 25 on one surface opposite to the surface on which the alignment film 28b is provided. The areas of the second transparent electrode 26b, the two alignment films 28a and 28b, and the color filter 25 are set to be approximately equal to each other.

  In the color filter 25, a second glass substrate 24b is disposed on one surface opposite to the surface on which the second transparent electrode 26b is provided. The area of the second glass substrate 24b is set smaller than the first glass substrate 24a and the first transparent electrode 26a and larger than the color filter 25 and the second transparent electrode 26b. The second transparent electrode 26b, the color filter 25, the two alignment films 28a and 28b, and the liquid crystal material 27, which are interposed between the second glass substrate 24b and the first transparent electrode 26a, are composed of a sealing material 29. It is sealed by.

  The display unit 21 having such a configuration is sandwiched between two polarizing plates 22a and 22b. In addition, a backlight panel 23 is disposed outside the first polarizing plate 22 a disposed on the first glass substrate 24 a side, which is the opposite side of the display surface of the display unit 21.

  The backlight panel 23 has a horizontally-long rectangular flat plate shape. The backlight panel 23 shines light from the first glass substrate 24a side of the display unit 21 so that an image displayed on the display unit 21 can be seen. As the light source of the backlight panel 23, for example, an LED (light emitting diode) is suitable, but an EL (electroluminescent lamp), a CFL (cathode fluorescent lamp), or the like can be used.

  As described above, in this example, the example in which the liquid crystal display panel is used as the display panel has been described. The liquid crystal display panel is previously polarized in the direction orthogonal to the optical axis with respect to the display surface. As a result, by applying a liquid crystal display panel to the display panel, it is possible to easily adjust the polarization direction of the image light. However, it goes without saying that, for example, an organic EL (Electroluminescence) panel or other display panel may be used as the display panel in addition to the liquid crystal display panel.

In addition, the 1st-4th display panels 11-14 can display not only the image | video for one or the other eye for displaying a three-dimensional image but a normal planar image | video.
[1/2 wavelength plate]
As shown in FIG. 3, a ½ wavelength plate (½λ plate) 16 is attached to the video display surfaces of the first display panel 11 and the third display panel 13. The half-wave plate 16 has a polarizing plate 17 in a first direction orthogonal to the optical axis on one surface opposite to the surface on which the first display panel 11 and the third display panel 13 are provided. Is provided. As a result, the polarization directions of the image lights L1 and L2 of the first and third display panels 11 and 13 change in the first direction. Also, the image display of the second display panel 12 and the fourth display panel 14 Similar to the first and third display panels 11 and 13, a ½ wavelength plate (½λ plate) 16 is attached to the surface. A polarizing plate 18 in the second direction orthogonal to the optical axis and the first direction is provided on one surface of the half-wave plate 16 opposite to the second display panel 12 and the fourth display panel 14. It has been. As a result, the polarization directions of the image lights R1 and R2 from the second and fourth display panels 12 and 14 change to the second direction.

Here, the half-wave plate 16 will be described with reference to FIG. As shown in FIG. 6, the half-wave plate 16 gives a phase difference of π (= λ / 2) to the electric field oscillation direction (polarization plane) of incident light. A rotation angle of 90 degrees can be obtained when the polarization plane of incident light is incident at an azimuth angle of .theta. In this example, the incident light is incident at an azimuth angle of 45 degrees, and the polarized light in the first direction or the second direction is obtained as the polarization direction.
[Half mirror]
As shown in FIGS. 1 and 4, the housing 2 is provided with a half mirror 5 so as to bisect the internal space. The upper end of the half mirror 5 is fixed to the opening 2a side of the upper surface 2d, and the lower end is fixed to a corner where the bottom surface 2b and the back surface 2c of the housing 2 are connected. The half mirror 5 is formed in a substantially trapezoidal flat plate shape corresponding to the shape of the housing 2.

  The half mirror 5 is set so that the light transmittance and the reflectance are equal. As shown in FIGS. 3 and 4, the half mirror 5 includes video light from the first display panel 11 of the first stereoscopic display unit 3 and the third display panel 13 of the second stereoscopic display unit 4. L1 and L2 are transmitted. The half mirror 5 reflects the image lights R1 and R2 from the second display panel 12 of the first stereoscopic display unit 3 and the fourth display panel 14 of the second stereoscopic display unit 4 at approximately 90 degrees. ing. As a result, the image lights R1 and R2 from the second and fourth display panels 12 and 14 first travel from the bottom surface portion 2b toward the top surface portion 2d, and are reflected by the half mirror 5 at approximately 90 degrees, thereby being the housing 2. Proceed toward the opening 2a side.

  In order to display a beautiful stereoscopic image, it is preferable that the image lights L1 and L2 from the first display panel 11 and the third display panel 13 are all transmitted without being reflected by the half mirror 5.

  Here, with reference to FIG.7 and FIG.8, the suitable attachment angle of the half mirror 5 is demonstrated. FIG. 7 is a schematic diagram for explaining refraction and reflection with respect to the incident angle of light, and FIG. 8 is a graph showing the reflectance generated at the boundary surface when light enters the glass from a vacuum.

  Light is a type of electromagnetic wave in which both electric and magnetic wave waves travel while vibrating. The vibration direction of the electric field and magnetic field is perpendicular to the vibration direction of light. As shown in FIG. 7, the case where the vibration of the electric field is parallel to a plane including incident light, refracted light, and reflected light is called p-polarized light. In this p-polarized light, when the angle formed by the refracted light and the reflected light is 90 degrees, the vibration direction of the electric field coincides with the traveling direction of the reflected light. However, such light does not exist. Therefore, in this case, no reflected light is generated, and all the light passes through the boundary surface and becomes refracted light. Thus, it is preferable to set the half mirror 5 at an angle such that all incident light becomes refracted light. As shown in FIG. 8, the reflection of p-polarized light is substantially zero when the incident angle θ is around 45 ° to 60 °. This angle is called the Brewster angle.

Therefore, the half mirror 5 has an incident angle θ of the image lights L1 and L2 from the first display panel 11 and the third display panel 13 shown in FIG. Install to be. As a result, the image lights L 1 and L 2 from the first display panel 11 and the third display panel 13 can be transmitted through the half mirror 5 without being reflected by the half mirror 5. As a result, it is possible to display a beautiful stereoscopic image.
[Control unit]
Further, as shown in FIGS. 1, 2 and 4, a control box 8 having a hollow rectangular parallelepiped shape is provided below the bottom surface portion 2b. The control box 8 is formed in a container shape having an upper surface portion opened. The control box 8 includes a control unit 6 that controls the first 3D display unit 3 and the second 3D display unit 4. Further, on the front face of the control box 8, a power switch, a changeover switch 19 for switching between stereoscopic video and normal planar video, and the like are disposed.
2. Circuit Configuration of Stereoscopic Display Device Next, the circuit configuration of the stereoscopic display device of the present invention will be described with reference to FIG. FIG. 9 is a block diagram illustrating a configuration of the stereoscopic display device.

  As shown in FIG. 9, the first stereoscopic display unit 3 includes two imaging devices 31 a and 31 b, two video amplification circuits 32 a and 32 b, and a scanning direction inversion circuit 33. The first imaging device 31a has a role of one eye of the user. The first imaging device 31a is connected to the first video amplification circuit 32a and supplies a video signal to the first video amplification circuit 32a. The first video amplification circuit 32 a is connected to the first display panel 11 and outputs a video signal from the first imaging device 31 a to the first display panel 11.

  The second imaging device 31b has the role of the other eye of the user, and is arranged at a position separated from the subject 30 by, for example, about 7 cm in the horizontal direction from the first imaging device 31a. The second imaging device 31 b is connected to the scanning direction inversion circuit 33 and supplies a video signal to the scanning direction inversion circuit 33. The scanning direction inversion circuit 33 inverts the scanning direction of the video signal photographed by the second imaging device 31b. The scanning direction inversion circuit 33 is connected to the second video amplification circuit 32b. The second video amplification circuit 32 b is connected to the second display panel 12 and outputs the video signal supplied from the scanning direction inversion circuit 33 to the second display panel 12. The two video amplification circuits 32 a and 32 b and the scanning direction inversion circuit 33 constitute a part of the control unit 6.

  Similarly to the first stereoscopic display unit 3, the second stereoscopic display unit 4 also includes two imaging devices 34 a and 34 b, two video amplification circuits 35 a and 35 b, and a scanning direction inversion circuit 36. The circuit configuration of the second stereoscopic display unit 4 is the same as that of the first stereoscopic display unit 3, and thus the description thereof is omitted. Further, the two video amplification circuits 35 a and 35 b and the scanning direction inversion circuit 36 constitute a part of the control unit 6. Note that the third imaging device 34 a that supplies a video signal to the third display panel 13 and the fourth imaging device 34 b that supplies a video signal to the fourth display panel 14 perform the first and second operations on the subject 30. It arrange | positions in the position different from the imaging | photography direction of 2 imaging device 31a, 31b. Thus, the subject 30 can be photographed from two different directions, and different stereoscopic images can be displayed on one stereoscopic display device as shown in FIG.

  Further, a synchronization circuit 39 for synchronizing the first stereoscopic display unit 3 and the second stereoscopic display unit 4 may be provided. The synchronization circuit 39 is connected to the four imaging devices 31a, 31b, 34a, and 34b, and is supplied with video signals from the four imaging devices 31a, 31b, 34a, and 34b. The synchronization circuit 39 outputs the data to the four display panels 11, 12, 13, and 14 in synchronization. As a result, by synchronizing the two stereoscopic images displayed from the first stereoscopic display unit 3 and the second stereoscopic display unit 4 with the synchronization circuit 39, the stereoscopic video in two directions can be displayed at the same timing. it can. As a result, the movement of the subject 30 that was not visible in one direction can be seen by changing the position and angle of the viewpoint.

  In this example, both the first and second imaging devices 31a and 31b and the third and fourth imaging devices 34a and 34b photograph the same subject 30, but different subjects may be photographed. . Thereby, the stereoscopic display device 1 can simultaneously display stereoscopic images of different subjects.

  FIG. 10 shows video signals recorded in advance on the first to fourth imaging devices on four recording media. That is, the video signal shot by the first imaging device 31a is recorded on the first recording medium 37a, and the video signal shot by the second imaging device 31b is recorded on the second recording medium 37b. Similarly, video signals photographed by the third and fourth imaging devices 34a and 34b are recorded on the third and fourth recording media 38a and 38b.

The video signal recorded on the first recording medium 37a is supplied to the first display panel 11 via the video amplification circuit 32a. The video signal recorded on the second recording medium 37b is supplied to the second display panel 12 via the video amplification circuit 32b in a state where the scanning direction is inverted by the scanning direction inversion circuit 33. Note that the video signals recorded on the third and fourth recording media 38a and 38b are also the third and fourth display panels, similarly to the video signals described on the first and second recording media 37a and 37b. 13 and 14. As a result, a video signal can be recorded in advance on a memory card, a disk, or the like, and a stereoscopic video can be displayed when the user likes it.
[Polarized glasses]
The user can experience a stereoscopic image displayed on the stereoscopic display device 1 having the above-described configuration by using polarized glasses 40 described below. As shown in FIG. 3, the polarizing glasses 40 are composed of a first polarizing part 41 and a second polarizing part 42. The first polarizing part 41 has a flat plate shape. The polarization direction of the first polarization unit 41 is set to a first direction that is the same polarization direction as the image lights L1 and L2 from the first and third display panels 11 and 13. Thereby, the first polarizing unit 41 can transmit only the video lights L1 and L2 from the first and third display panels 11 and 13. As a result, the images of the first and third display panels 11 and 13 are incident on one eye of the user.

  On the other hand, the 2nd polarizing part 42 has comprised flat form. The polarization direction of the second polarization unit 42 is set to a second direction which is the same polarization direction as the image lights R1 and R2 from the second and fourth display panels 12 and 14. Thereby, the second polarizing section 42 can transmit only the image lights R1 and R2 from the second and fourth display panels 12 and 14. As a result, the images of the second and fourth display panels 12 and 14 are incident on the other eye of the user.

In addition, although the example which set the polarization angle of the 1st polarizing part 41 to the 1st direction was demonstrated in this example, the polarization angle of the 1st polarizing part 41 is the 1st and 3rd display panels 11, It may be the same as 13 polarization angles. Similarly, the example in which the polarization direction of the second polarization unit 42 is set to the second direction has been described, but the polarization angle of the second polarization unit 42 is the polarization of the second and fourth display panels 12 and 13. It may be the same as the angle.
3. Operation of Stereoscopic Display Device Next, the operation of the stereoscopic display device of the present invention will be described with reference to FIGS. 3 and 9.

  First, as shown in FIG. 9, video signals captured by the four imaging devices 31 a, 31 b, 34 a, 34 b are output to the corresponding four display panels 11, 12, 13, 14. Images are displayed on the four display panels 11, 12, 13, and 14. As shown in FIG. 3, the image light L1 of the image displayed on the first display panel 11 passes through one side in the longitudinal direction of the half mirror 5 and proceeds to the opening 2a side. Further, the image light R1 of the image displayed on the second display panel 12 is reflected at approximately 90 degrees on one side in the longitudinal direction of the half mirror 5 and travels toward the opening 2a. The image lights L 1 and R 1 from the first and second display panels 11 and 12 overlap on one side in the longitudinal direction of the half mirror 5.

  Next, the video light L1 from the first display panel 11 that has passed through the half mirror 5 passes through the first polarizing part 41 of the polarizing glasses 40 and reaches one eye of the user. In addition, the image light R1 from the second display panel 12 reflected by the half mirror 5 passes through the second polarizing unit 42 of the polarizing glasses 40 and reaches the other eye of the user. Thereby, the user can experience the stereoscopic image from the first stereoscopic display unit 3 by the parallax of both eyes.

  The image light L2 of the image displayed on the third display panel 13 passes through the other side in the longitudinal direction of the half mirror 5 and proceeds to the opening 2a side. Further, the image light R2 of the image on the fourth display panel 14 is reflected by approximately 90 degrees on the other side in the longitudinal direction of the half mirror 5 and proceeds to the opening 2a side. The image lights L2 and R3 from the third and fourth display panels 13 and 14 overlap on the other side in the longitudinal direction of the half mirror 5.

  Next, the image light L2 from the third display panel 13 that has passed through the half mirror 5 is transmitted through the first polarization unit 41 of the polarizing glasses 40 in the same manner as the image light L1 of the first display panel 11. Reach one eye of the user. Further, the image light R2 from the fourth display panel 14 reflected by the half mirror 5 is transmitted through the second polarization unit 42 of the polarizing glasses 40 in the same manner as the image light R1 of the second display panel 12. Reach the other eye of the user. Thereby, the user can experience a stereoscopic image from the second stereoscopic display unit 4 by the parallax of both eyes. As a result, one stereoscopic display device 1 can display different stereoscopic images at the same time.

  As described above, according to the stereoscopic display device of the present invention, since the front surface of the housing 2 is all open, nothing that blocks the user's field of view is arranged. As a result, the user can experience different stereoscopic images simultaneously on one side and the other side in the longitudinal direction of the opening 2a of the housing 2 without being blocked. Further, according to the stereoscopic display device of the present invention, two different image lights can be reflected and transmitted simultaneously on one side and the other side in the longitudinal direction of one half mirror 5. Thereby, the number of parts can be reduced.

  In addition, the changeover switch 19 which switches the image | video displayed on the 1st three-dimensional display part 3 and the 2nd three-dimensional display part 4 to a normal plane image was provided. Thereby, the user can simultaneously view a stereoscopic image and a normal planar image with one apparatus.

  The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims. Not too long. For example, in the embodiment described above, an example in which two stereoscopic display units, that is, a first stereoscopic display unit and a second stereoscopic display unit are provided has been described. However, the number of stereoscopic display units is three or more. Also good. That is, three or more display panels that display the image for one eye are arranged side by side in parallel on the back surface of the housing with the display surfaces facing the same direction. Then, three or more display panels for displaying the image for the other eye may be arranged side by side in parallel in the same direction on the bottom surface of the housing.

  In addition, the stereoscopic display device of the present invention can be used in a flight simulator, mechanical design, and the like. Furthermore, it can be used in the medical field, the industrial field, the chemical field, and the like.

It is a perspective view which shows the example of embodiment of the three-dimensional display apparatus of this invention. It is a disassembled perspective view which shows the example of embodiment of the three-dimensional display apparatus of this invention. It is a schematic block diagram which shows the example of embodiment of the three-dimensional display apparatus of this invention. 1 is a schematic view showing a cross section of a display panel according to an embodiment of a stereoscopic display device of the present invention. It is sectional drawing of the display panel which concerns on the example of embodiment of the three-dimensional display apparatus of this invention. It is a schematic diagram for demonstrating a half-wave plate. It is a schematic diagram explaining refraction and reflection with respect to the incident angle of light. It is the graph which showed the reflectance which arises in the boundary surface when light injects into glass from the vacuum. It is a block diagram which shows the circuit structure concerning the three-dimensional display apparatus of this invention. It is a block diagram which shows the other embodiment of the circuit structure concerning the three-dimensional display apparatus of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Stereoscopic display apparatus, 2 ... Housing | casing, 2a ... Opening part, 2b ... Bottom face part, 2c ... Back surface part, 3 ... 1st stereoscopic display part, 4 ... 2nd stereoscopic display part, 5 ... Half mirror, 6 DESCRIPTION OF SYMBOLS Control part 11 ... 1st display panel 12 ... 2nd display panel 13 ... 3rd display panel 14 ... 4th display panel 31a, 31b, 34a, 34b ... Imaging device 40 ... Polarization Glasses 41... First polarization unit 42. Second polarization unit L 1, L 2, R 1, R 2.

Claims (6)

A hollow housing having an opening opened on the front surface;
A first three-dimensional display unit comprising a first display panel provided on a back surface in the housing facing the opening and a second display panel provided on a bottom surface in the housing;
The third display panel provided side by side with the first display panel and the display surface in the same direction on the back surface in the housing, and the second display panel and display on the bottom surface in the housing A second three-dimensional display unit comprising a fourth display panel provided side by side with the surfaces facing in the same direction;
Provided in the housing, transmits image light from the first display panel and the third display panel, and transmits image light from the second display panel and the fourth display panel to the opening. 3D display device comprising a half mirror that reflects to the side. On the first display panel and the third display panel, an image for one eye is displayed,
The stereoscopic display device according to claim 1, wherein an image for the other eye is displayed on the second display panel and the fourth display panel. The transmitted image light from the first display panel overlaps the reflected image light from the second display panel, and the transmitted image light from the third display panel reflects the fourth display panel. The stereoscopic display device according to claim 1, wherein the half mirror is disposed in the housing so that video light from the two overlaps. The first display panel and the second display panel are arranged on one side in the longitudinal direction of the casing, and the third display panel and the fourth display panel are arranged in the longitudinal direction of the casing. Located on the other side,
The image light of the first display panel and the second display panel overlap on one side in the longitudinal direction of the half mirror, and the image light of the third display panel and the fourth display panel is the half light. The three-dimensional display device according to claim 1, wherein the three-dimensional display device overlaps on the other side in the longitudinal direction of the mirror. The stereoscopic display device according to claim 1, wherein the first display panel, the second display panel, the third display panel, and the fourth display panel are liquid crystal display panels. The stereoscopic display device according to claim 1, wherein the casing is formed so as to expand from the back surface portion to the opening portion, and the opening portion is expanded.

Images