JP3685853B2 - 3D image display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stereoscopic video display apparatus that displays stereoscopic video without glasses, and more particularly to a stereoscopic video display apparatus that enables stereoscopic viewing regardless of changes in the position of an observer.
[0002]
[Summary of Invention]
The present invention relates to a stereoscopic image display apparatus that can observe a stereoscopic image without spectacles and even when a prosecutor moves his / her head. The target stereoscopic image display is provided on the surface of an image display. This is a direct-viewing stereoscopic image display device that can be directly observed by mounting an optical action plate for stereoscopic viewing such as a lenticular plate. A stereoscopic image display and a display rotating base for rotating the direction thereof, or a moving mechanism for moving the position of the stereoscopic image display, a rotation driving unit or a moving driving unit for driving these, and means for detecting the position of the eye of the observer By rotating the direction of the stereoscopic image display or moving the position of the stereoscopic image display according to the position of the eyes, stereoscopic viewing is always possible regardless of changes in the position of the observer. It is characterized by.
[0003]
[Prior art]
FIG. 5 is a plan view showing a stereoscopically viewable area in a conventional stereoscopic image display.
[0004]
As shown in the figure, the stereoscopic image display 101 is composed of an image display 103 and a lenticular lens 105 arranged in close contact with the front surface thereof. By guiding the right eye image and the left eye image via 105, stereoscopic viewing without glasses is possible.
[0005]
From the viewpoint of the observer, the left eye image light beam L and the right eye image light beam R from the lens elements at the left end, the center, and the right end of the lenticular lens 105 in FIG. 5 are designed to converge to the positions of the left and right eyes, respectively. ing. In the figure in which the left eye image light beam L and the right eye image light beam R converge, the rhombus area indicated by the satin area is a stereoscopically viewable area, and the head position H ₀ indicated by the solid line in the figure is inserted into the rhombus area. In this case, stereoscopic viewing is possible with the naked eye.
[0006]
However, in the conventional example, when the observer's eye (head) moves out of the rhombus region and moves to the position H ₁ indicated by the broken line in the drawing, accurate stereoscopic viewing is impossible. In view of this, an apparatus has been proposed that enables stereoscopic viewing even when the observer's head moves.
[0007]
For example, Japanese Patent Laid-Open No. 64-73330 (Japanese Patent Laid-Open No. 62-228547), Japanese Patent Laid-Open No. 1-317091 (Japanese Patent Application No. 63-149540), or Japanese Patent Application Laid-Open No. 3-69932 (Japanese Patent Application No. 1). -205744) is known.
[0008]
These known examples recognize the movement of both eyes of the observer and move the display pixel or the lens plate (lenticular lens) according to the amount of movement, thereby moving the display pixel and the lens element. Is controlled in accordance with the left and right eye positions.
[0009]
However, in order to move the display pixels according to the positions of the left and right eyes, continuous movement is not possible with an array type pixel display that is normally used. In addition, it is actually difficult to move the lens plate because the lens plate is mounted on the display surface.
[0010]
On the other hand, as described in Japanese Patent Application Laid-Open No. 1-107247 (Japanese Patent Application No. Sho 62-266745), in an image display that projects an image from an image projector onto a lens-equipped screen, the image projector is A method of moving and changing the position of the pixel of the projected image with respect to the position of the lens element is also known, but this method cannot be applied to the direct stereoscopic image display device targeted by the present invention. .
[0011]
[Problems to be solved by the invention]
As described above, in the conventional stereoscopic image display device without glasses, as shown in FIG. 5, the stereoscopic viewable region where the observer's head and left and right eyes are located is extremely limited. This means that the observer can normally observe the stereoscopic image only in a state where the left and right eyes are in the stereoscopic viewable region. That is, when the observer moves and the positions of the left and right eyes move, the left and right eyes deviate from the original stereoscopic view possible area and stereoscopic observation becomes impossible.
[0012]
On the other hand, in the conventional method in which observation can be performed even when the head moves, the relative position relationship between the display pixel and the lens element is determined by moving the display pixel or the lens plate. Although control is performed according to the position, continuous movement is impossible with a normal array type pixel display. Also, moving the lens plate is practically difficult because it is mounted on the display surface.
[0013]
Further, the method of moving the image projector to change the position of the projected image pixel with respect to the position of the lens element cannot be applied to the direct stereoscopic video display device.
[0014]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stereoscopic image display apparatus that enables stereoscopic viewing without glasses with a simple configuration regardless of changes in the position of the observer. .
[0017]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention of claim 1 comprises a stereoscopic image display comprising an optical action plate for stereoscopic viewing mounted on the surface of the image display, and is displayed on the stereoscopic image display. In a direct-view type stereoscopic image display device that allows an observer to directly observe a stereoscopic image, an observation rotary chair on which the observer sits, a vertical arm that is attached to the observation rotary chair, one end of the vertical arm, and the like A display moving mechanism comprising a horizontal arm connected to the end, and a display provided in a suspended state at the other end of the horizontal arm, for mounting the stereoscopic image display and rotating the stereoscopic image display A position detector that directly or directly detects the position of the eye of the observer who is observing the stereoscopic image displayed on the stereoscopic image display, or a position corresponding to the eye position, and is detected by the position detector. Depending on the position of the indicator It is characterized by comprising a rotation drive means for rotating the gantry.
[0018]
In the above configuration, even if the observer rotates his / her swivel chair and moves his / her position, the stereoscopic image display rotates in conjunction with the observer while maintaining the correct orientation with the observer. Regardless of this, stereoscopic viewing without glasses is always possible.
[0019]
According to a second aspect of the present invention, there is provided the stereoscopic image display device according to the first aspect, further comprising moving means for moving the stereoscopic image display back and forth with respect to an observer.
[0020]
In the above configuration, even when the observer moves back and forth, the stereoscopic image display can be moved following the movement, and as a result, stereoscopic viewing without glasses is always possible regardless of changes in the position of the observer.
[0021]
According to a third aspect of the present invention, in the stereoscopic image display device according to the first or second aspect , the observer wears a reflective piece or a light emitter on the forehead portion, and the position detecting means is the reflective piece or light emitter The position corresponding to the position of the eyes of the observer is detected using as an index.
[0022]
With the above configuration, it is possible to accurately detect a position corresponding to the position of the eyes of the observer with a simple configuration without detecting the position of the eyes of the observer.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
<First Embodiment>
FIG. 1 shows an embodiment of a stereoscopic video display apparatus according to the present invention.
[0024]
As shown in FIG. 1, the stereoscopic image display 1 includes an image display 3 and a lenticular lens 5 attached to the front surface of the image display 3 , and the stereoscopic image displayed on the stereoscopic image display 1. Can be directly observed by the observer 7.
[0025]
The stereoscopic image display 1 is mounted in a state of being fitted on the display rotating base 9. The display rotating gantry 9 is rotationally driven by the rotation driving unit 11 in a state where the stereoscopic image display 1 is placed .
[0026]
A position detection camera 13 is attached to the upper portion of the display rotating base 9 and picks up an observer 7 who is observing a stereoscopic image and detects the position of the eye. In this embodiment, the observer 7 attaches the reflecting piece 15 to the forehead portion, and the position detection camera 13 takes an image using the reflecting piece 15 as an index instead of the eye of the observer 7. . A light emitter may be used instead of the reflecting piece 15.
[0027]
The eye position detection signal imaged by the position detection camera 13 is supplied to the position detection circuit 17, and here, a drive signal corresponding to the eye position is supplied to the rotation drive unit 11. That is, the position detection circuit 17 sets zero when the reflection piece 15 serving as an index is located in front of the position detection camera 13, and when the reflection piece 15 is shifted from the front to the left of the position detection camera 13, the amount of deviation is increased. A corresponding electrical signal is output to the rotation drive unit 11.
[0028]
The rotation drive unit 11 includes an electric motor, and rotates the display rotating base 9 according to the electric signal supplied from the position detection circuit 17 and stops the rotation when the electric signal becomes zero. As a result, as shown in FIG. 2, the stereoscopic image display 1 and the eye position detection camera 13 rotate following the reflecting piece 15 and always face the reflecting piece 15. For this reason, the observer 7 can always observe a stereoscopic image even if his / her head is moved left and right.
[0029]
In addition, the stereoscopic video display device according to the present embodiment includes a display moving mechanism 23 having a first arm 19 and a second arm 21, and a movement driving unit 25 that drives the moving mechanism 23. .
[0030]
One end of the first arm 19 is connected to the rotation drive unit 11, and the other end is connected to one end of the second arm 21 via the connection unit 27. The other end of the second arm 21 is connected to the movement drive unit 25.
[0031]
The movement drive unit 25 includes an electric motor. The stereoscopic image display 1 is moved back and forth by swinging the second arm 21 left and right in the drawing, and the stereoscopic image is displayed by rotating the second arm 21. The display 1 can be moved up and down.
[0032]
In the above configuration, as shown in FIG. 3, when the observer observes the stereoscopic image display 1 without moving his / her head, the direction D _{0 is} perpendicular to the original lens surface position P ₀ . Has a head position H ₀ (indicated by a broken line in the figure). However, when the observer 7 moves his head to the position H ₁ indicated by the solid line in the figure, the reflecting piece 15 provided at the forehead position is also moved, and this is imaged by the position detection camera 13, and the position detection circuit is obtained from the imaged signal. The position is detected at 17, and an electric signal corresponding to the amount of deviation from the original position is output to the rotation drive unit 11, and the rotation drive unit 11 corrects the amount of deviation. Rotate. As a result, the position of the observer's eyes enters the rhombus area shown in FIG. 3, that is, the observable areas A _R and A _L , so that the observer can continue to observe the stereoscopic image. In this case, the observable areas A _R and A _L are located on the left and right with the viewer's forehead as the center, and the area has a width. Even if it is not directly facing the vessel 1, as long as the left and right eyes of the observer 7 are in the observable areas A _R and A _L , stereoscopic vision with the naked eye is possible.
[0033]
<Second Embodiment>
FIG. 4 shows a second embodiment of the stereoscopic video display apparatus according to the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0034]
In this embodiment, the observer 7 observes the stereoscopic image display 1 while sitting on the observation rotary chair 31. A display moving mechanism 37 including a vertical arm 33 and a horizontal arm 35 is attached to the observation rotary chair 31. That is, one end of the vertical arm 33 is attached to the observation rotary chair 31, and the other end is connected to one end of the horizontal arm 35. On the other end of the horizontal arm 35, the display rotary base 9 is attached in a suspended state via a movement drive unit 39 and a rotation drive unit 41.
[0035]
Similarly to the first embodiment described above, the stereoscopic image display 1 and the detection camera 13 for detecting the position of the observer's eye are attached to the display rotating base 9. The observer 7 also wears a reflective piece 15 as an index on the forehead portion.
[0036]
The movement drive unit 39 includes an electric motor and is configured to be movable left and right in the drawing on the horizontal arm 35. Therefore, as the movement drive unit 39 moves, the display rotating platform 9 can also move the stereoscopic image display 1 back and forth, that is, back and forth with respect to the observer. As in the first embodiment, the rotation driving unit 41 rotates the display rotating platform 9 following the movement of the observer's head (eye), and allows the observer to always observe a stereoscopic image.
[0037]
Further, when the observer 7 rotates the observation rotary chair 31, the display rotary frame 9 moves while maintaining the state of facing the observer with the rotation. For this reason, the observer 7 can continue to observe the stereoscopic image even if the observation rotary chair 31 is rotated while sitting.
[0038]
<Other embodiments>
In each of the above embodiments, the position detection camera 13 is used to detect the position of the eye, but other detection means such as an ultrasonic transmitter / receiver may be used instead of the camera 13.
[0039]
In addition, the control method of the rotation drive unit 41 is not a method that works so that the electrical signal indicating the position of the eye becomes zero, but the direction of the stereoscopic image display 1 is set in the direction of the index of the head or both eyes. Any means can be used as long as it can be rotated.
[0040]
In each of the above embodiments, the stereoscopic image display 1 is moved back and forth by controlling the movement drive unit 25 or 39 so that the front-rear distance set initially is always maintained even when the observer 7 moves back and forth. You may comprise so that it may move. In this case, the detection of the eye position is executed by detecting the position of the forehead index (reflective piece 7) of the observer 7 with the camera 13, as in the first and second embodiments. For the measurement, a method using ultrasonic waves, a method of obtaining a forehead index by electro-optic observation from a position two points away, and using triangulation are used.
[0041]
In each of the above embodiments, the lenticular lens 3 is used as an optical action plate for stereoscopic viewing mounted on the surface of the image display 3. However, the present invention is not limited to this, and a parallax barrier or the like. It may be.
[0042]
The following system can be constructed by utilizing the stereoscopic video display device according to each of the above embodiments.
[0043]
That is, a computer that detects the position and direction of the space of the stereoscopic image display 1 or the position of the observer's head and generates the detected electrical signal as movement data of the photographing camera when the display image is acquired or By using the graphics as three-dimensional spatial data, it is possible to display a stereoscopic image that accompanies the movement of the viewpoint of the observer 7, and to virtually observe the surrounding external environment from the window in the visual field in the observer's free line-of-sight direction. A so-called “free-view virtual window” system can be constructed.
[0045]
【The invention's effect】
As described above , according to the first aspect of the present invention , the observation rotary chair on which the observer sits, the vertical arm having one end attached to the observation rotary chair, and the horizontal arm connected to the other end of the vertical arm, A display moving mechanism comprising: a stereoscopic image display; and a display rotation base for rotating the stereoscopic image display and mounted on the other end of the horizontal arm. The position of the eye of the observer who is observing the stereoscopic image displayed on the display is detected directly or a position corresponding to the position of the eye is detected, and the display rotating platform is rotated according to the detected position. Since the observer rotates the swivel chair and moves his / her position, the stereoscopic image display rotates in conjunction with the observer while maintaining the correct orientation with the observer. Regardless of this, stereoscopic viewing without glasses is always possible. .
[0046]
According to a second aspect of the present invention, the stereoscopic image display apparatus according to the first aspect further comprises moving means for moving the stereoscopic image display back and forth with respect to the observer, so that the observer moves back and forth. However, the stereoscopic image display can be moved following this, and as a result, stereoscopic viewing without glasses is always possible regardless of changes in the position of the observer.
[0047]
According to the invention of claim 3 , the observer wears a reflective piece or a light emitter on the forehead portion, and detects a position corresponding to the position of the eye of the observer using the reflective piece or the light emitter as an index. With this configuration, it is possible to accurately detect a position corresponding to the position of the eye of the observer with a simple configuration without detecting the position of the observer's eye itself.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a first embodiment of a stereoscopic video display apparatus according to the present invention.
FIG. 2 is a plan view showing a positional relationship between a stereoscopic image display and an observer in the present invention.
FIG. 3 is a plan view showing a relationship between a stereoscopic image display and a stereoscopically viewable area in the present invention.
FIG. 4 is a configuration diagram showing a second embodiment of a stereoscopic video display apparatus according to the present invention.
FIG. 5 is a plan view showing a relationship between a conventional stereoscopic image display and a stereoscopically viewable region.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stereoscopic image display 3 Image display 5 Lenticular lens 7 Observer 9 Display rotation frame 11, 41 Rotation drive part 13 Position detection camera 15 Reflection piece 17 Position detection circuit 19 1st arm 21 2nd arm 23, 37 Display movement mechanism 25, 39 Movement drive unit 27 Connection unit 31 Observation swivel chair 33 Vertical arm 35 Horizontal arm

Claims (3)

Direct-viewing 3D image display equipped with a 3D image display with a 3D optical action plate mounted on the surface of the image display so that an observer can directly observe the 3D image displayed on this 3D image display In the device
An observation swivel chair on which the observer sits;
A display moving mechanism comprising a vertical arm having one end attached to the observation swivel chair and a horizontal arm connected to the other end of the vertical arm;
A display rotating base that is provided in a suspended state at the other end of the horizontal arm, is mounted with the stereoscopic image display, and rotates the stereoscopic image display;
Position detection means for directly detecting the position of the eyes of the observer who is observing the stereoscopic image displayed on the stereoscopic image display or a position corresponding to the position of the eyes;
Rotation drive means for rotationally driving the display rotating frame according to the position detected by the position detection means;
A stereoscopic video display device comprising: The stereoscopic image display apparatus according to claim 1 ,
3. A stereoscopic image display apparatus comprising moving means for moving the stereoscopic image display back and forth with respect to an observer. The stereoscopic video display apparatus according to claim 1 or 2 ,
The observer wears a reflecting piece or a light emitter on the forehead portion, and the position detecting means detects a position corresponding to the position of the eye of the observer using the reflecting piece or the light emitter as an index. 3D image display device.

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