JP4072081B2 - 3D display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional display device, and more particularly to a three-dimensional display device that suppresses contradiction among physiological factors of stereoscopic vision and allows a large number of people to observe a three-dimensional stereoscopic image at the same time.
[0002]
[Prior art]
As an apparatus for displaying a three-dimensional stereoscopic image, for example, a volume type method shown in FIG. 4 is known (for example, see Patent Document 1).
Hereinafter, the principle of the volume type method will be described.
In this volume type method, as shown in FIG. 4B, a three-dimensional object 611 is sampled in the depth direction when viewed from the observer to form a collection 612 of two-dimensional images (hereinafter referred to as depth sampled images). This collection of depth sampled images 612 is arranged again in the depth direction, for example, in a time-division manner using the volumetric three-dimensional display device 613 shown in FIG. 4A to reconstruct the three-dimensional redevelopment 614. To display a three-dimensional stereoscopic image.
As this volume type three-dimensional display device, a variable focus lens type three-dimensional display device using a variable focus lens is known (see Patent Document 2).
[0003]
5 and 6 are diagrams showing an example of the volume type three-dimensional display device shown in FIG.
The volume type three-dimensional display device shown in FIGS. 5 and 6 is a variable focus lens type three-dimensional display device using a variable focus lens described in Patent Document 2 described above.
In the volume type three-dimensional display device shown in FIGS. 5 and 6, the depth sampling image is displayed on the two-dimensional display device 601 in a time division manner, and is displayed on the two-dimensional display device 601 by the synchronization device 607 and the driving device 608. The focal length of the varifocal lens 602 is changed in synchronization with the two-dimensional image 606.
Then, based on the optical principle, the image formation position by the variable focus lens 602 of the collection of depth sampled images 612 displayed on the two-dimensional display device 601 changes in the depth direction corresponding to the focal length of the variable focus lens 602. To do.
If this change is performed at high speed within the afterimage time of the human eye, a three-dimensional stereoscopic image 603 is observed as viewed from the binocular 604 of the observer due to the afterimage effect.
It should be noted that when the depth sampled images constituting the collection of depth sampled images 612 are rearranged in the depth direction by the varifocal lens 602, all the images as viewed from the observer 100 are overlapped. It is preferable to adjust the vertical and horizontal positions and the magnification.
FIG. 5 shows a variable focus lens type three-dimensional display device in which the two-dimensional display device 601 is arranged within the focal length of the variable focus lens 602 to display a three-dimensional stereoscopic image 603 of a virtual image, and FIG. 1 shows a variable focus lens type three-dimensional display device in which a two-dimensional display device 601 is arranged outside the focal length of the variable focus lens 602 and a real three-dimensional stereoscopic image 603 is displayed.
[0004]
The prior art document information related to the invention of the present application includes the following.
[Patent Document 1]
Japanese Patent No. 3022558 [Patent Document 2]
Japanese Patent Laid-Open No. 11-296153
[Problems to be solved by the invention]
As described above, in the above-described volumetric 3D display device, each of the depth sampled images constituting the collection of depth sampled images 612 is rearranged in the depth direction in a time division manner to display a 3D stereoscopic image. However, when each of the depth sampled images rearranged in the depth direction overlaps when viewed from the observer, the observer perceives it as a three-dimensional stereoscopic image.
Therefore, in the three-dimensional display device of the aforementioned volume type scheme, it will be a position where the three-dimensional stereoscopic image is observed is limited, a problem that multiplayer person can not observe the three-dimensional image at the same time was there.
The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to suppress contradiction between physiological factors of stereoscopic vision, and a large number of people can simultaneously perform tertiary. An object of the present invention is to provide a three-dimensional display device capable of observing an original stereoscopic image.
The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.
[0006]
[Means for Solving the Problems]
Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.
That is, the present invention includes a display device, and glasses two partial lens that constitutes part is attached as the left and right lenses of their respective the one of the variable-focus lens, when two or more integer n Drive for changing the focal length of the two partial lenses so as to change the focal length of one variable focus lens connected to the two partial lenses and having the two partial lenses as a part of the configuration in n stages. A plurality of depth sampled images obtained by sampling a display target object in the depth direction in synchronization with an n-stage change in focal length of the apparatus and one variable focus lens having the two partial lenses as a part of the configuration . A synchronization device that displays on the display device a depth sampled image to be displayed at the focal length position .
According to the present invention, for example, an observer puts on one of the variable focus lenses by a method such as wearing glasses in which two partial lenses each constituting a part of one variable focus lens are attached as left and right lenses. Since the partial lenses constituting the part are arranged in front of the eyes of the observer, a large number of people can observe a three-dimensional stereoscopic image at the same time.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.
FIG. 1 is a diagram showing a schematic configuration of the three-dimensional display device according to Embodiment 1 of the present invention.
As shown in the figure, the three-dimensional display device of the present embodiment includes a large screen display device (hereinafter simply referred to as a display device) 200 and a partial lens (131) disposed in front of both eyes of the observer 100. 132), a driving device 210, and a synchronization device 220.
Here, the partial lenses (131, 132) constitute a part of the variable focus lens 130. Further, for example, as shown in FIG. 1, the partial lenses (131, 132) are attached as left and right lenses of the glasses, and the observer 100 observes the display device 200 wearing the glasses.
As the display device 200, for example, a CRT, a liquid crystal display, an LED display, an EL display, a plasma display, an FED display, a projection display, a line drawing display, or the like is used.
Further, when n is an integer equal to or greater than 2 (n ≧ 2), the variable focal length lens 130 can change the focal length in n stages. In the following description, the case where n is 5 will be described. .
[0008]
FIG. 2 is a diagram for explaining the operation of the three-dimensional display device according to the embodiment of the present invention.
As shown in FIG. 2, in the present embodiment, the driving device 210 causes the focal length of one varifocal lens 130 having two partial lenses (131, 132) as a part of its configuration to be divided into five stages in a time division manner. The two-dimensional image displayed on the display device 200 is imaged on the imaging surface 1011 to the imaging surface 1015.
Then, the synchronization device 220 displays on the display device 200 each of the depth sampled images constituting the above-described collection of depth sampled images 612 in synchronization with the change in the focal length of the variable focus lens 130 in five steps.
Then, from the optical principle, the imaging position of each depth sampled image displayed on the display device 200 by the variable focus lens 130 changes in the depth direction in accordance with the focal length of the variable focus lens 130.
Therefore, the focal length of the variable focus lens 130 is set so that the imaging position of each depth sampled image displayed on the display device 200 by the variable focus lens 130 is the same as the order of sampling in the depth direction. By displaying each depth sampled image on the display device 200 in synchronization with the change in five steps, each depth sampled image can be rearranged in the depth direction.
If this operation is performed at high speed within the afterimage time of human eyes, the observer 100 can observe the three-dimensional stereoscopic image 603 due to the afterimage effect.
[0009]
In the above description, when rearranging the depth sampled images, the case where the order of the depth positions is the same as the order when sampling in the depth direction has been described, but in the present embodiment, When rearranging the depth sampled images, the order of the depth positions may be different from the order of sampling in the depth direction.
For example, as shown in FIG. 3, the order of the depth positions when rearranging the depth sampled images can be reversed from the order of sampling in the depth direction.
Incidentally, FIG. 3 is a diagram for explaining an example of a display method described above, in the figure, 11 ₁ to 11 _5, each have been sampled in the depth direction as viewed three-dimensional objects from the observer 100 Depth It is a sampled image.
Here, the depth sampled images (cars in FIG. 3) (11 _{1 to} 11 ₅ ) correspond to the collection 612 of two-dimensional images shown in FIG.
In this way, if the displayed three-dimensional stereoscopic image is a still image, the displayed three-dimensional stereoscopic image is strange when the observer 100 moves or moves the apparatus regardless of the still image. It seems to move with feeling.
Further, even when the displayed three-dimensional stereoscopic image is a moving image, it appears to move with an odd feeling according to the movement of the observer 100.
As described above, in this embodiment, when rearranging each depth sampled image, by changing the order of the depth positions from the order of sampling in the depth direction, a unique three-dimensional stereoscopic image can be obtained. It is possible to improve the appeal as a display device or an advertising medium.
In this case, it is preferable that the display target object is a two-dimensional image that allows the observer 100 to determine the front and back of the two-dimensional image obtained by projecting the object on the two-dimensional surface.
[0010]
The three-dimensional display device according to the present embodiment uses one variable focus lens 130 having two partial lenses (131, 132) as a part of its configuration , and each depth sampled image is displayed in time division on the display device 200. The three-dimensional stereoscopic image 603 is displayed to the observer 100 by changing the focal length of the variable focus lens 130 in synchronization with the two-dimensional image displayed on the display device 200 by the synchronization device 220 and the driving device 210. Is the same as the conventional variable focus lens type three-dimensional display device shown in FIG.
However, in the conventional variable focus lens type three-dimensional display device shown in FIG. 5 described above, the variable focus lens 602 is not arranged in front of the observer's eyes, so that the three- dimensional stereoscopic image 603 can be observed through the variable focus lens 602. The number of people was limited, and a large number of people could not observe a three-dimensional stereoscopic image at the same time.
[0011]
On the other hand, in the three-dimensional display device of the present embodiment, two partial lenses (131, 132), each of which constitutes a part of the varifocal lens 130, are arranged in front of the observer 100, that is, Since the variable focus lens 130 is arranged for each observer, a large number of people can observe a three-dimensional stereoscopic image at the same time.
Furthermore, in the three-dimensional display device of the present embodiment, since there are at least two or more surfaces on which an image is actually displayed, a contradiction among binocular parallax, convergence, and focus adjustment can be greatly suppressed. Fatigue can be suppressed, and the observation image itself moves in the depth direction, so it is easy to satisfy the stereoscopic factor.
In the present embodiment, as a method of arranging two partial lenses (131, 132), each of which forms part of the variable focus lens 130, in front of the eye of the observer 100, each is one of the variable focus lenses 130. Glasses with two partial lenses (131, 132) constituting the part are prepared as left and right lenses, and the observer 100 employs a method of wearing these glasses, each of which is a part of the variable focus lens 130. The method of arranging the two partial lenses (131, 132) constituting the lens in front of the eyes of the observer 100 is not limited to this, and other methods may be used.
Although the invention made by the present inventor has been specifically described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Of course.
[0012]
【The invention's effect】
The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.
According to the three-dimensional display device of the present invention, contradiction among physiological factors of stereoscopic vision can be suppressed, and a large number of people can simultaneously observe a three-dimensional stereoscopic image.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a three-dimensional display device according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining the operation of the three-dimensional display device according to the embodiment of the present invention.
FIG. 3 is a diagram for explaining an example of a display method of the three-dimensional display device according to the embodiment of the present invention.
FIG. 4 is a diagram showing a schematic configuration of a conventional volume type three-dimensional display device.
5 is a diagram illustrating an example of a volume type three-dimensional display device illustrated in FIG. 4;
6 is a diagram showing an example of a volume type three-dimensional display device shown in FIG. 4;
[Explanation of symbols]
11 _{1 to} 11 ₅ ... Depth sampled image, 100 ... Observer, 130, 602 ... Variable focus lens, 131, 132 ... Partial lens, 200 ... Large screen display device, 210, 608 ... Drive device, 220, 607 ... Synchronization Device, 601 ... 2D display device, 603 ... 3D stereoscopic image, 604 ... observer's binocular, 606 ... 2D image, 611 ... 3D object, 612 ... collection of depth sampled images, 613 ... volumetric cubic Original display device, 614... Three-dimensional redevelopment, 1011 to 1015.

Claims (1)

A display device;
And glasses two parts lenses their respective forms part of one of the variable focus lens is mounted as left and right lenses,
When n is an integer of 2 or more, the two variable lenses are connected to the two partial lenses and have the two partial lenses as a part of the configuration so that the focal length of the two variable focus lenses is changed in n stages . A driving device for changing the focal length of the partial lens ;
Of the plurality of depth sampled images obtained by sampling the display target object in the depth direction in synchronization with the n-stage change in the focal length of one varifocal lens having the two partial lenses as a part of the configuration. A three-dimensional display device comprising: a synchronization device that causes the display device to display a depth sampled image to be displayed at a focal position .

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