WO1994006049A1

WO1994006049A1 - Three-dimensional image display

Info

Publication number: WO1994006049A1
Application number: PCT/JP1993/001197
Authority: WO
Inventors: Makoto Otsubo
Original assignee: Nittetsu Elex Co., Ltd.
Priority date: 1992-09-06
Filing date: 1993-08-25
Publication date: 1994-03-17
Also published as: AU4981493A

Abstract

An opaque display control panel having a large number of small translucent parts is divided into a plurality of areas. A single or plural small translucent parts in each divided area are made transmittable to display the small image of an object viewed from different positions in correspondence with the fine translucent parts which are made transmittable on the image display panel arranged on the back of the display control panel. A plurality of viewers can observe a clear stereoscopic image.

Description

3D 3D image display ''

"Technical field"

The present invention relates to a three-dimensional stereoscopic image display device capable of freely adjusting a focal point of an eye as well as a sense of depth, having a wide viewing angle, and displaying a clear three-dimensional stereoscopic image.

"Background technology"

Conventional technologies that can be applied to 3D television include: (1) an anaglyph type that uses special deflection and shutter glasses, a density difference type, a deflection and time division type, and (2) a parallax stereogram type and a lenticular type. , Large concave mirror type, large convex lens type, etc., without glasses, ③ parallax stereogram type, multi-eye type using lenticular plate, ④ varifocal mirror type, rotating cylindrical type, display area layer type, half mirror Many methods have been proposed, such as a depth sampling method such as a synthesis method and a display surface vibration method, a holographic set such as a laser reproduction hologram and a white light reproduction hologram, and a spatial time division method that has been recently proposed. Its practical use has been attempted for general household and business use.

On the other hand, in the field of photography, a stereoscopic image display method generally called “integral photography” has been proposed. A microlens (or a small translucent part) is placed on the photographic plate placed on the back, and inverted negative images with different viewpoints are taken. Forming an image, in front of the erect image, the erect image A display control panel having a number of small holes corresponding to the image is provided, and the erect image is observed through the display control panel.

However, the conventional methods (1) to (4) cannot satisfy the conditions such as landscape image reproduction, simultaneous observation of many people, movement of the viewpoint, and adjustment of the focus of the eyes. There was a problem that it was difficult to view stereoscopic images.

Further, in the stereoscopic image display system using the above-mentioned photo, when the interval between the minute light-transmitting portions of the display control panel is narrowed to increase the resolution to obtain a clear image, the displayed erect image is obtained. There was a problem that the viewing angle was reduced because the area of the image was reduced. In addition, the photographic method has a problem that it is extremely difficult to obtain a moving image.

Furthermore, in the stereoscopic image display method using the above-mentioned photo, it is necessary to perform an extremely time-consuming process of first creating an inverted image of the subject and then obtaining an erect image. There was a problem.

The present invention has been made in view of the above circumstances, has a wide viewing angle, can obtain a clear image even on a small screen, and further has a process for obtaining an upright positive image. It is an object of the present invention to provide a three-dimensional stereoscopic image display device capable of easily performing a moving image and displaying a moving image.

"Disclosure of the invention"

A three-dimensional stereoscopic image display device according to the present invention, which meets the above-mentioned object, comprises: a non-light-transmitting display control panel having a large number of minute light-transmitting parts; and a rear part of the display control panel; In a three-dimensional stereoscopic image display device having an image display panel for displaying a small image corresponding to the object viewed from a slightly different position, a distance between the adjacent small light transmitting portions is smaller than a width of the small image. The small light-transmitting portion is not always light-transmittable, and the display control panel is further divided into a plurality of regions each larger than the size of the small image. One or a plurality of minute light-transmitting portions are sequentially and selectively transmissible for each time, and the light-transmitting portions corresponding to the minute light-transmitting portions are formed on the image display panel in synchronization with the light-transmitting time of the minute light-transmitting portions. It is configured so that small images are displayed.

Here, the width of the small image refers to its diameter when the small image is circular, and refers to the maximum width in the vertical, horizontal or oblique direction when the small image is rectangular.

Further, the small image displayed on the image display panel may be an image taken by moving one or more imaging devices little by little, or may have the same structure as the display control panel used for the three-dimensional stereoscopic image display device. An imaging control panel or an imaging control panel using a lens in a minute translucent portion of the imaging control panel is used, and one or more imaging elements are arranged behind the imaging control panel, and one or more imaging elements of the imaging control panel are disposed. The light-transmitting portion may be capable of transmitting light momentarily one after another, and may be an image picked up by the image pickup device. Furthermore, an image created by processing the three-dimensional information of an object obtained using electromagnetic waves, particle beams, magnetism, sound waves, and the like by a computer may be used, or may be created by computer graphics. Image.

In the three-dimensional stereoscopic image display device according to the present invention, the display control panel having a large number of minute light-transmitting portions is divided into a plurality of regions, and a single or a plurality of minute light-transmitting portions is sequentially selected for each divided region. A plurality of small images corresponding to the plurality of minute light-transmitting portions that have become light-transmittable are simultaneously displayed on the image display panel. Therefore, compared to the case where all the small light-transmitting parts of the display control panel can be transmitted one by one, all the small light-transmitting parts can transmit light in a short time. Can be possible.

Furthermore, since the interval between the adjacent small light-transmitting portions is smaller than the width of the small image, small images corresponding to the respective small light-transmitting portions may be overlapped and displayed on the image display panel with a gap therebetween. Accordingly, the image display utilization of the image display panel is increased, and the stereoscopic image can be observed even if the image display panel is downsized.

"Brief description of the drawings"

FIG. 1 is a perspective view showing a schematic configuration of a three-dimensional image display apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the three-dimensional image input apparatus, FIG. 3 is a perspective view illustrating the operation of the three-dimensional stereoscopic image display device.

"Best mode for carrying out the invention"

As shown in FIG. 1, a three-dimensional stereoscopic image display device 10 according to one embodiment of the present invention includes a display control panel 12 on which a number of minute light transmitting portions 11 are formed, and a display control panel 12. It has an image display panel 13 installed behind it and a display control device 14 for controlling them. Hereinafter, these will be described in detail.

The display control panel 12 is formed of, for example, a transmission type liquid crystal panel. According to the size of the display control panel 12, 10,000 to 100,000 micro light transmission portions 11 are actually formed. , Figure 1 (Figures 3 and 4 are also the same), in order to clarify the operation of the micro-light-transmitting part, it is expressed very coarsely, and furthermore, it is divided into vertical and horizontal lines in a grid to make it easy to understand. .

The image display panel 13 is a liquid crystal display panel (or CRT) And a small image corresponding to the minute light transmitting portion 11 is displayed in parallel on the image display panel 13 in accordance with a control signal sent from the display control device 14. Has become.

An image input to the three-dimensional stereoscopic image display device 10 is captured by a stereoscopic image input device 16 as shown in FIG. As shown in FIG. 2, the stereoscopic image input device 16 includes a front-side imaging control panel 17 and a CCD or the like that converts the light amount of a small image captured through the imaging control panel 17 into an electric signal. is configured to have an imaging device 1 8, the inverted image a _n on the surface of the image pickup element 1 8 subjects ABC through the minute light transmitting portions _{_{_{P n, B n, C n}}} (n = teeth 2, 3 & · ·)), And converts the amount of light into an electric signal. Since each of the small images formed on the surface of the image sensor 18 is an inverted image, each small image is electrically inverted and stored in the data memory of the imaging control device 21 as image data of an erect image. I have stored. In addition, it is preferable to provide a hood 19 in front of the stereoscopic image input device 16 as shown by a two-dot chain line in FIG. 1, whereby the hood 19 is formed via each minute light transmitting portion. A plurality of small images can be prevented from being formed in an overlapping manner. The imaging control panel 17 is formed of, for example, a transmissive liquid crystal panel, and a micro-transmission part is opened and closed by a control signal so that an image of a subject is formed on the surface of the imaging element 18. The imaging control panel 17 is controlled so as to capture a subject image in synchronization with the opening of the minute light transmitting portion and store the image data in a data memory of the imaging control device. However, opening and closing of the micro-light-transmitting part means that the micro-light-transmitting part, which cannot transmit light at all times, once becomes transmissive and then cannot transmit light again (the same applies hereinafter). .

A method of sequentially opening and closing the minute light-transmitting portions formed on the imaging control panel 17 will be described with reference to FIG. The surface 7 is divided into a plurality of regions, and the micro light transmitting portions P,, P ₂ , P ₃ ,... realm (a!, p,), , (a 2, ρ (a 3, p), · · ■ in each is focused, into an electric signal to them as an image of the first panel. However, before Symbol In the description, for example, (a,, ρ,) indicates a region where the vertical band a, and the horizontal band p intersect in FIG. 3, and in this case, the size of each region is the size of the micro-transparent light that is simultaneously opened. The small images formed by the sections are set so that they do not overlap, and it is actually difficult to form an image by fitting a small image accurately in such a square. In the area (a,, ρ,), which is an example, an image is approximately formed in a circle shown by oblique lines.

After closing the minute light transmitting portions 部 ι, P ₂ , P ₃ ,..., P _n , the next minute light transmitting portions in the same region 20, Q ₂ , Q ₃ ,. Q _n ··· are simultaneously opened, and a number of small images picked up by this are converted into electric signals as an image of one panel by the image pickup element 18 at the back. In this case, the region imaged by the minute light transmitting portion, Q ₂ , Q ₃ ,..., Q „is (b,, p (b ₂ , P,), (b ₃ , ρ!) ■ Then, the same processing is performed by moving to the next adjacent minute light transmitting portion, and all the minute light transmitting portions of each region 20 surrounded by a thick line in FIG. A large number of small images formed by the light transmitting unit are sequentially converted into electric signals using the image pickup device 18. The control of the image pickup control panel 17 and the image pickup device 18 is performed by the image pickup control device 21a. The image signal and the control signal (including other necessary synchronization signals) are processed by the imaging control device 21a and then input to the display control device 14.

Note that the imaging control panel 17 is provided with a large number of minute light-transmitting portions, and a microphone opening lens is used for the minute light-transmitting portion, and an image is formed by the microphone opening lens. Each of the small images obtained can be picked up by the image pickup device 18, whereby a brighter image can be obtained.

The control signal and the image data input to the display control device 14 are subjected to predetermined signal processing, and are processed in the same order as shown in FIG.

1 is opened and closed, and a small image corresponding to the minute light transmitting portion 11 is displayed on the image display panel 13 on the back of the minute light transmitting portion. This will be described with reference to FIG. 4. The display control panel 12 is divided into regions 21 corresponding to the regions 20 of the stereoscopic image input device 16, and the microscopic light transmission at the same position of the regions 21 is performed. Part 1 1

(For example, a small light-transmitting portion of N = l) are simultaneously opened to an electric signal by the imaging element 18 corresponding to each small light-transmitting portion 11 of the small light-transmitting portion group A i. A small image group B, composed of the converted image signals of one panel, is displayed on the image display panel 13. Furthermore, while sequentially to open and close the micro light-transmitting part groups of up to A _{1 6} repeat these control, fine small translucent portion group (A, to A, ₆₎ small image group corresponding to the (B, .about.B _I By viewing all the small images of ₆ ) within the afterimage retention time of the eye, the three-dimensional image of the subject as a whole captured by the three-dimensional image input device 16 can be viewed by the three-dimensional stereoscopic image display device 10. Can be.

In this embodiment, for the sake of simplicity, 16 small light-transmitting portions are formed in each area obtained by dividing the surfaces of the imaging control panel 17 and the display control panel 12. The present invention applies whether or not it is a case.

In the three-dimensional stereoscopic image display device according to the present invention, it is easy to control the opening and closing of the minute light transmitting portions of the imaging control panel and the display control panel, but the image display panel is synchronized with the opening of each minute light transmitting portion. Since it is necessary to display a small image, a display device having high-speed response performance is required. Therefore, the display device Then, it is preferable to use an LED display device, a flat panel television using a large number of micro electron guns, or the like.

In the above embodiment, the stereoscopic image input device and the three-dimensional stereoscopic image display device are connected by a wire. However, the signal and image data are modulated from the stereoscopic image input device and transmitted by radio waves, and they are transmitted. The signal and image data can be demodulated and input to the three-dimensional stereoscopic image display device. The signal and image data are recorded on a video recorder or the like, and reproduced and displayed by the three-dimensional stereoscopic image display device. It is also possible.

"Industrial applicability"

As is clear from the above description, the three-dimensional stereoscopic image display device according to the present invention divides the display control panel into a plurality of regions, and sequentially singulates one or a plurality of minute light-transmitting portions for each of the divided regions. Since light transmission can be selectively performed, and small images corresponding to the minute light-transmitting portions are displayed on the image display panel in synchronization with each other, an extremely large amount of small images can be displayed on a fixed image display panel by changing the time. Can be displayed. This allows multiple persons to simultaneously observe an extremely clear image as compared to the conventional photographic display method (integral photography method) in which all the micro-transparent portions are fully opened.

In addition, since the small light-transmitting portions in the display control panel divided into a plurality of regions can be transmitted in parallel, the small light-transmitting portions of the display control panel can be sequentially transmitted at high speed one by one. This has the advantage that the speed can be made slower than that of, and the image reproduced on the image display panel also displays a plurality of small images at the same time, thus facilitating the electronic control. A large number of small light-transmitting parts are provided on the upper side, and small images corresponding to the small light-transmitting parts are provided behind the small light-transmitting parts. Since the images are displayed synchronously when the part can transmit light, a wide viewing angle can be obtained, and it can be used as an industrial or home stereoscopic image display device.

Claims

The scope of the claims

1. A non-light-transmitting display control panel having a large number of minute light-transmitting portions, and an object disposed at the back of the display control panel, wherein the object is viewed from a slightly different position corresponding to each of the minute light-transmitting portions. A three-dimensional stereoscopic image display device having an image display panel for displaying a small image,

The distance between the adjacent small light-transmitting portions is smaller than the width of the small image, and the small light-transmitting portions are not always capable of transmitting light. It is divided into a plurality of regions larger than the size of the image, and one or more micro light transmitting portions are sequentially and selectively transmissible for each of the divided regions, and are synchronized when the micro light transmitting portions can transmit light. A three-dimensional stereoscopic image display device, wherein the small image corresponding to the minute light transmitting portion is displayed on the image display panel.

2. The three-dimensional stereoscopic image display device according to claim 1, wherein the display control panel is a transmissive liquid crystal panel.

3. The three-dimensional stereoscopic image display device according to claim 1, wherein the image display panel comprises a liquid crystal display panel, a plasma display panel, or a cathode ray tube display.