WO1993014601A1

WO1993014601A1 - Three-dimensional data recording/reproducing apparatus

Info

Publication number: WO1993014601A1
Application number: PCT/JP1993/000021
Authority: WO
Inventors: Makoto Otsubo
Original assignee: Nittetsu Elex Co., Ltd.
Priority date: 1992-01-11
Filing date: 1993-01-08
Publication date: 1993-07-22
Also published as: AU3266693A; JPH05191838A

Abstract

Focusing means equipped with a shutter are provided in many number maintaining a predetermined distance. An image focused by a light control unit equipped with focusing means having said shutters that are opened and closed by predetermined scanning signals is converted into an electric signal through an imaging element disposed at the back thereof, an image similar to the image obtained from said electric signal is reproduced on an image display unit, and is viewed through pinholes that are opened and closed in synchronism with the scanning signals of said focusing means, thereby to obtain a three-dimensional image.

Description

Livestock

3D information recording / reproducing device

`` Technical field J

The present invention relates to an apparatus for recording and reproducing a three-dimensional shape as three-dimensional information.

"Background technology"

Conventional stereoscopic televisions include: (1) Meganegation type using special deflection and shutter glasses, density difference type, deflection type and time division type, and (2) Paraluck stereogram. Multi-lens using a lenticular-type, large concave mirror type, large convex lens type, etc., or a three-lens type using a paralux stereogram type, integral type, and lenticular plate. Multi-lens type consisting of a lenticular type formed by a television, etc., and depth consisting of a varifocal mirror type, a rotating cylindrical type, a display area layer type, a half mirror composite type, and a display surface vibration type Many methods have been proposed, such as a sampling method, ⑤a holographic set consisting of a laser reproduction hologram and a white light reproduction hologram, and 空間 a spatial time division method proposed recently, and Its practical use and crotch home, and for business have been attempted.

However, even in the conventional methods (1) to (4) described above, there are various problems in the reproduction of landscape images, simultaneous observation by a large number of people, movement of viewpoints, adjustment of focus, and the like. It was difficult to make the captured image three-dimensional and view it naturally.

The present invention has been made in view of the above circumstances, and is capable of processing image signals electrically, furthermore, making it possible for many people to simultaneously observe a three-dimensional image without using glasses or the like. New paper for viewing stereoscopic images by changing the viewing angle Another object of the present invention is to provide a three-dimensional information recording / reproducing apparatus which can focus on a large point freely at any point and enables natural vision.

"Disclosure of Invention J

The three-dimensional information recording / reproducing apparatus S according to the present invention, which meets the above-mentioned object, comprises a pinhole or a lens, each of which is provided with a large number of imaging means provided with a shutter at predetermined intervals, and a predetermined scanning. A three-dimensional object comprising: a light control unit that opens and closes the shutter by a signal; and an image pickup device on the back of the light control unit that converts an image formed through the imaging unit into an electric signal when each of the shutters opens. Image input device

S, an image display unit that reproduces an image signal of the image sensor in synchronization with the predetermined signal, and an opening / closing unit that is disposed in front of the image display unit and that is opened and closed in synchronization with the predetermined scan if And an image reproducing apparatus provided with a light control panel having a number of bin holes arranged in parallel.

Here, scanning refers to using the horizontal and vertical synchronization signals used in television systems to sequentially open and close the shutter, and input and reproduce images accordingly. Say.

The three-dimensional information recording / reproducing apparatus S according to the present invention has the following features.

A three-dimensional information recording / reproducing device g based on the principle of central projection method. A light control section comprising a lens, each of which is provided with a shirt for scanning by a predetermined signal; and a light control section disposed on the back of the light control section, each of which is provided when the shutter is opened. Imaging that converts light passing through the imaging means into an electric if And natural light and scattered light emitted from the subject, which are optical signals of an image, pass through imaging means provided with the shutter, form an image on the imaging element, and become an electric signal. The converted image signal is obtained corresponding to the scan signal of each shutter.

Here, since a large number of the shutters are arranged at predetermined intervals, electric signals of many images from different viewpoints are input to the image reproducing apparatus directly or via an appropriate medium.

The image display unit of the image reproducing device displays each image signal input through imaging means opened / closed by the scan signal at a high speed.

A light control panel having a number of pinholes opened and closed by a predetermined synchronization signal synchronized with opening and closing of the image forming means of the light control unit is provided in front of the image display unit. By looking at a part of a large number of images reproduced on the image display unit through, one image can be seen. When viewing the image reproducing apparatus with both eyes, the point of view of the image viewed through the pinhole is different, and as a result of viewing the images with different points of interest with both eyes, the result is obtained. You can view the projected image in three dimensions.

"Brief description of drawings j

FIG. 1 is a principle diagram of a three-dimensional information recording / reproducing apparatus according to one embodiment of the present invention.

Fig. 2 is a side view of the stereoscopic image reproducing device, and Fig. 3 is a side view of the image reproducing device.

"Best mode for carrying out the invention"

Subsequently, an embodiment embodying the present invention with reference to the attached drawings. It will be explained briefly and will be used for understanding the present invention.

As shown in FIG. I, a three-dimensional information recording / reproducing device 10 according to one embodiment of the present invention includes a three-dimensional image input device 11 for inputting images three-dimensionally, and a three-dimensional image input device 11. And an image reproducing apparatus 12 for reproducing the input image. Hereinafter, these will be described in detail.

As shown in FIG. 1, the stereoscopic image input device 11 has an image sensor 12 a and a light controller I 3 arranged at a predetermined interval on the front surface of the image sensor 12 a, and the light controller Reference numeral 13 denotes an example of an image forming means, and a large number of binholes I3a (or lenses) each having a shutter are arranged vertically and horizontally at predetermined intervals. It is preferable that the number of the binholes 13a is large corresponding to the number of pixels (for example, 1000 or more), but it may be about 400 to 10000. .

As the shutter, for example, a liquid crystal shutter, an optical shutter using a birefringence principle (Pockels effect), or a magnetic mechanical shutter is used. For example, horizontal and vertical scan signals are used. Is scanned in the same way as a normal television, at a speed of, for example, 30 times or more per second in relation to the afterimage of the eyes. In addition, in the scanning method, in addition to the method of sequentially scanning from the upper pinhole to the lower pinhole, an interlaced scan may be performed in the same manner as in a normal television. In addition, the scanning speed may be higher, or may be low enough not to cause blinking in some cases.

The image pickup device 12a preferably uses a solid-state image pickup device (CCD) having an extremely fast response, and converts an image formed by each scanned pinhole 13a into an electric signal. . In addition, The image corresponding to the pinhole 13a to be scanned requires an extremely high-frequency scan signal if it is scanned by the horizontal and vertical synchronization signals over the entire area of the image sensor 12a. As shown in FIG. 3, it is preferable to partially scan only the portion H of the image displayed on the image sensor corresponding to each bin hole 13a, whereby the signal of the image sensor is input. The scan area is gradually changed by the scan signal of the binhole 13a, which requires complicated control for the scan control.However, the scan frequency is low, and the image sensor is It is extremely efficient because it is not necessary to use extremely responsive objects.

The above-mentioned scanning control of the pinhole 13a and the control of the image sensor are performed by the image input device 14, and as shown in FIG. 3, each of the pinholes 13a scanned by the above device is controlled. A large number of screen (G) signals for C & and control signals for them are obtained.

The image reproducing device 12 includes an image display unit 15 that reproduces the image, and a plurality of pinholes 13 that are arranged at a predetermined interval in front of the image display unit 15 and are an example of an image forming unit. and a light control panel 17 having a number of pinholes 17a corresponding to a.

The image display section 15 needs to display individual images corresponding to the pinholes 17a at a high speed, and thus may be a brown tube. Since scanning is difficult, it is preferable to use a fast-responsive Braun tube that scans the electron beam by electrostatic deflection.

Further, a liquid crystal panel having a high response speed can be used as the image display section I5. In some cases, the response speed recently developed is extremely high (500 GHz or more) and the size is large. A micro vacuum tube of several micron It is also possible to use a large number of flat televisions.

The light control panel 17 has a number of pinholes 17a arranged in parallel with the binholes 13a, and the opening and closing of the pinholes is synchronized with the scan signal of the pinhole I3a to scan. Is done. Therefore, it is preferable to use, for example, a liquid crystal switch as the pinhole 17a, whereby the pinhole 17a can be scanned within 1Z30 seconds.

The control of the large number of openings and the control of the image display unit 'I5 are controlled by a signal sent from the image output control unit gl8.

Accordingly, a specific image (G) is displayed on the image display unit 15 at a high speed in accordance with the image signal output by each binhole I3a scanned by the stereoscopic image input device 11. Is displayed.

Since the pinhole 17a opens at a high speed while scanning in response to the binhole 13a, the person viewing the image reproduction processing device S12 can read the pinhole that is scanned at a high speed. The reproduced image is viewed on the image display section 15 through 17a. In this case, when viewed with both eyes, the image is viewed through different pinholes 17a as shown in FIG. Therefore, the left and right eyes see different images through the different pinholes 17a, so that a stereoscopic image can be seen.

Note that, as shown in FIG. 2, the image display section 19 can be constituted by an electron gun 20, electron beam deflection means 2] and a cathode ray tube display section having a phosphor screen 22. A number of optical shutters applying the Pockels effect are juxtaposed, and a volatilizer (deflector) 24 and an analyzer (analyzer) 25 are arranged before and after the light control panel 23, which is formed in parallel. It is preferable that this can further improve readability. Wear.

Table 1 shows a description of a method using the three-dimensional information recording / reproducing apparatus 10 according to one embodiment of the present invention, which is compared with other methods. As shown in Table 1, the three-dimensional information recording / reproducing apparatus 10 has the following features. It can be seen that the method is superior in various respects to the conventional method.

table 1

(X: impossible, △: not impossible, 〇: possible, ◎: excellent,?: Unknown)

Pita paper In FIG. 5, the pinholes 13a formed in the light control section I3 and the pinholes 17a formed in the light control panel 17 are extremely small and many, but a small number are formed. The binholes 13a and 17a are indicated, and the others are omitted.

"Industrial applicability J

As is clear from the above description, the three-dimensional information recording / reproducing apparatus according to the present invention can capture a three-dimensional image using one three-dimensional image input apparatus, and further, it can be used as one image reproducing apparatus. As a result, the eye can be focused on an arbitrary point as compared with a conventional device, and a large number of people can simultaneously view a three-dimensional image in a natural state.

Unlike conventional devices, if you look at the image playback device at a different viewing position, the projected image will look three-dimensional from a different viewpoint.

Furthermore, in the present invention, since everything is processed by electric signals, recording and synthesis of a photographed stereoscopic image and a projected stereoscopic image can be relatively easily and freely performed.

New pig iron

Claims

Claims 1. A large number of imaging means each comprising a pinhole or a lens, each of which is provided with a shutter, are arranged in parallel at a predetermined interval, and the shutter is opened and closed by a predetermined scan signal. A three-dimensional image input device, comprising: a light control unit; and an image pickup device on a back surface of the light control unit, which converts an image formed through the imaging unit into an electric signal when the respective shutters are opened.

An image display unit for reproducing an image signal of the image sensor in synchronization with the predetermined signal; and a plurality of image display units arranged on the front surface of the image display unit and opened and closed in synchronization with the predetermined scan signal. A three-dimensional information recording / reproducing apparatus comprising: an image reproducing apparatus including a light control panel having a pinhole.

New paper