JP2000347132A - Picture display device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device capable of observing a natural three-dimensional picture and also displaying a two-dimensional picture and the three-dimensional picture or switching and observing both pictures by displaying a monocular parallactic picture in a lateral direction and displaying a monocular parallactic picture in a longitudinal direction by acting synchronously with a picture display unit. SOLUTION: The monocular parallactic picture in the lateral direction is displayed by the picture display unit displaying the parallactic picture and a deflecting control means deflecting and controlling the display directivity of the parallactic picture synchronously with the parallactic picture. Then, the device is provided with a picture separating means capable of being attached to the observer' s head or face and displaying the monocular parallactic picture in the longitudinal direction by acting synchronously with the picture display unit. In this device, a slit-shaped aperture panel 3 for scanning in order to generate monocular parallax in the lateral direction and the picture display unit 1 for displaying the parallactic picture 7 are utilized. Then, the slit-shaped picture separating means (slit spectacles 100) scanning in the longitudinal direction and provided near the observer in order to generate monocular parallax in the longitudinal direction and the picture display unit 1 are utilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus and an image display method, and more particularly to an image having a natural depth (three-dimensional image) by allowing an observer to observe a monocular parallax image with each of a right eye and a left eye. Image) for viewing three-dimensional images.

[0002]

2. Description of the Related Art Conventionally, various methods have been tried as a method of reproducing an object having a depth so as to have a depth. Among them, a stereoscopic image display device (stereoscopic display device) that expresses a stereoscopic effect by using the parallax between the right eye and the left eye has been put into practical use because of its easy realization. As a configuration of a stereoscopic display device using binocular parallax, there are a spectacle method in which an observer wears liquid crystal shutter glasses and polarizing glasses, and a method in which no glasses are required unlike a parallax barrier method.

The parallax barrier method is described in
H.Kalplan, "Theory of ParallaxBarriers", J.SMPTE, V
ol.59, No. 7, pp. 11-21 (1952), a stripe image in which the left and right images are arranged at least alternately from a plurality of parallax images from a plurality of viewpoints, a predetermined distance from this image Through a slit (referred to as a parallax barrier) having a predetermined opening provided only
By observing a parallax image corresponding to each eye with each eye, stereoscopic vision can be performed.

Further, in order to improve compatibility with a two-dimensional image (one-viewpoint image) display device, a parallax barrier is generated electronically using a transmission type liquid crystal display device, and the shape and position of the barrier stripe are formed. A three-dimensional display device that electronically variably controls the above is disclosed in JP-A-3-119889, JP-A-5-122733, and the like.

FIG. 10 is a basic configuration diagram of a stereoscopic image display device disclosed in Japanese Patent Application Laid-Open No. 3-119889.
In the figure, an electronic parallax barrier 203 composed of a transmissive liquid crystal display element is disposed on a transmissive liquid crystal display surface 201 for displaying an image via a spacer 202 having a thickness d.

A transmissive liquid crystal display screen 201 displays a vertical stripe image having parallax captured from two directions or multiple directions, and an electronic parallax barrier 203 specifies an XY address by a control means such as a microcomputer 204. By doing so, the controller 205 and the X driver 20
6, a parallax barrier pattern is formed at an arbitrary position on the barrier surface via the Y driver 207, and stereoscopic viewing is performed according to the principle of the parallax barrier method.

FIG. 11 is a block diagram of a display unit of a three-dimensional image display device comprising a liquid crystal panel display and an electronic barrier disclosed in Japanese Patent Application Laid-Open No. 3-119889. In this configuration, two liquid crystal layers 215 and 225 are sandwiched between two polarizing plates 211 and 218 and two polarizing plates 221 and 228, respectively.

In this apparatus, when displaying a two-dimensional image, the display of the electronic parallax barrier pattern (electronic barrier) 203 is stopped, and the display is made colorless and transparent over the entire image display area. Unlike the stereoscopic image display device using the conventional parallax barrier method, compatibility with two-dimensional display is realized.

Japanese Patent Application Laid-Open No. 5-122733 discloses FIG.
As shown in FIG. 2, a configuration in which a barrier stripe pattern can be generated only in a part of the electronic parallax barrier 203 composed of a transmission type liquid crystal display element,
There is disclosed an example in which a stereoscopic image and a two-dimensional image can be mixedly displayed on the same plane.

As a stereoscopic image display method that does not require glasses, many methods using a lenticular have been proposed. In the lenticular system, a lenticular lens in which a large number of lens-like lenses are arranged on the front surface of a display is provided to separate images spatially entering the left and right eyes, thereby allowing a viewer to observe a stereoscopic image.

[0011] Of these methods, a method of causing an observer to perform stereoscopic vision using binocular parallax (eg, an eyeglass system, a parallax barrier system, a lenticular system, etc.) is widely used. Since a contradiction occurs between the recognition and the three-dimensional recognition due to the convergence, the observer often feels tired or uncomfortable. In addition, many methods for reproducing a three-dimensional image that satisfies all of the three-dimensional eye recognition functions without relying only on such binocular parallax have been attempted.

Japanese Patent Application Laid-Open No. 64-84793 discloses a method for reproducing a three-dimensional object using a holographic technique. The above-mentioned patent publication discloses a real-time hologram reproducing device using a liquid crystal dot matrix display element.

FIG. 13 is a diagram showing the configuration of this device. In the figure, an interference fringe pattern enabling a desired stereoscopic image reproduction is generated by a microprocessor 301 and a video control device 302, and the interference fringe pattern is drawn as a bright and dark pattern on a liquid crystal dot matrix element 304 by a driver circuit 303. I do.

By irradiating this with laser light generated from the laser light emitting circuit 305 and observing from the direction A, the observer can observe a stereoscopic image. Further, by dynamically changing the interference fringe pattern drawn on the liquid crystal dot matrix element 304, a three-dimensional moving image can be obtained.

Since holography generates the same wavefront as the real thing, it can be said that it is an ideal three-dimensional display means. However, recording and reproducing the necessary interference fringe pattern requires an extremely high-resolution device, which is a practical problem.

In order to solve the problems of binocular parallax fatigue and the problem of holography feasibility, a stereoscopic image display apparatus using a super multi-view system for displaying two or more images in a single eye has been proposed. This will be described in detail when describing an embodiment of the present invention.

Japanese Unexamined Patent Application Publication No. 11-72744 proposes a three-dimensional reproducing apparatus provided with a unidirectional light radiation source array and this light control means. Japanese Patent Application No. 9-36
No. 1956 is based on the same principle as that of the above-mentioned Japanese Patent Application Laid-Open No. 11-72744, and generates two or more light rays, that is, monocular parallax, on a viewer's pupil by scanning a display panel and a minute aperture as light ray control means. The configuration is described. Japanese Patent Application No. 1
The configuration and means for generating monocular parallax are also described in 0-211076.

Further, Japanese Patent Application No. 9-368961 describes a system using observation glasses in which a small aperture scans in order to display two or more images on one observer's pupil and to reduce fatigue during observation. ing.

[0019]

A stereoscopic display using binocular parallax, in which two or more parallax images are observed by the right eye and the left eye, respectively, does not match the focus and convergence of the eye depending on display conditions. There is a demand for a three-dimensional display method that is not restricted by display conditions.

In order to provide a natural stereoscopic image to an observer, a super-multiview direct-view display has been proposed. However, this display has the following problems.

In order to secure a certain degree of freedom of the observer's viewing position and to display a plurality of images (monocular parallax) on the observer's pupil, a very large number of parallax images are required, which is great for reproducing or recording data. A large storage capacity is required, the signal processing speed is enormous, and the apparatus tends to be complicated.

In a three-dimensional image display apparatus for three-dimensional display using holography, the resolution of a spatial modulation element for displaying an interference fringe pattern is considerably lower than the resolution of a conventional photosensitive material. Diffraction angle cannot be too large. Therefore, there has been a problem that the observation area of the reproduced image is narrowed.

According to the present invention, there is provided an image display device or an image display capable of observing a natural three-dimensional image and displaying a two-dimensional image and a three-dimensional image (binocular parallax or monocular parallax) or by switching between them. The purpose is to provide a method.

[0024]

According to a first aspect of the present invention, there is provided an image display device, comprising: an image display for displaying a parallax image; and a deflection control for deflecting the display directivity of the parallax image in synchronization with the parallax image. Means for displaying a monocular parallax image in the horizontal direction by means of the image display device, and an image separating means which can be attached to the head or face of the observer and operates and displays the monocular parallax image in the vertical direction in synchronization with the image display device. It is characterized by doing.

According to a second aspect of the present invention, in the first aspect, two or more images of the horizontal and vertical monocular parallax images are displayed on an observer's pupil.

According to a third aspect of the present invention, in the first aspect of the present invention, the deflection control means has an aperture panel having a configuration in which a slit-shaped aperture scans in the horizontal direction.

According to a fourth aspect of the present invention, in the first aspect, the deflection control means has a microlens array that vibrates in a lateral direction.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the deflection control means has a polygon mirror for reflecting and deflecting a light beam from the image display.

According to a sixth aspect of the present invention, in the first aspect of the invention, the frame frequency of the image display is determined by the number of the parallax images in the horizontal direction and the number of separations of the image separating means that can be mounted on the head or face of the observer. And the reciprocal of the afterimage time.

[0030] The invention of claim 7 is characterized in that, in the invention of claim 6, two-dimensional display is performed by displaying the same two-dimensional image as the parallax image to be displayed within the afterimage time.

According to an eighth aspect of the present invention, in the third aspect, either one of the deflection control means for generating the horizontal parallax image or the image separating means which can be attached to the head or face of the observer is transmitted. It is characterized in that the same two-dimensional image is displayed as a parallax image to be displayed every time within the afterimage period, and two-dimensional image display is performed.

According to a ninth aspect of the present invention, in the third aspect of the present invention, both the deflection control means for generating the horizontal parallax image and the image separation means which can be attached to the head or face of the observer are all controlled for transmission. The two-dimensional display is performed by displaying the same two-dimensional image as the parallax image to be displayed every afterimage time.

According to a tenth aspect of the present invention, in the third aspect of the present invention, the right and left eyes of the image separating means which can be attached to the observer's head or face are alternately controlled for shading and transmission. And a control unit that transmits all the deflection control units that generate the parallax images in the directions, and the parallax images for the right eye and the left eye are alternately displayed on the image display in synchronization with the shading and transmission of the image separation unit. The stereoscopic image is displayed by displaying the binocular parallax image by the observer.

According to an eleventh aspect of the present invention, in the first aspect of the present invention, the brightness of the image display is adjusted according to the type of the display image displayed on the image display.

According to a twelfth aspect of the present invention, in the first aspect of the present invention, there is provided a means for detecting whether or not the observer wears an image separating means which can be worn on the head or face of the observer. A two-dimensional or three-dimensional image is displayed on the image display in response to the request.

According to a thirteenth aspect, in the twelfth aspect, the three-dimensional display displays a three-dimensional image of binocular parallax or a three-dimensional image of monocular parallax.

According to a fourteenth aspect of the present invention, there is provided an image display method, wherein image information is displayed by the image display device according to any one of the first to thirteenth aspects.

[0038]

Next, Embodiments 1 and 2 of the present invention will be described. Elements having the same reference numerals attached to the drawings used in the description are described as having the same function. In the description of the second embodiment, differences from the first embodiment will be described, and description of the same parts as the first embodiment will be omitted.

(Embodiment 1) The image display apparatus of the present invention uses a super multi-view system in which the left and right eyes observe a monocular parallax image.

The present embodiment utilizes a slit-shaped aperture panel that scans in the horizontal direction to generate horizontal monocular parallax, and an image display that displays a parallax image. Further, in order to generate a vertical monocular parallax, a slit-shaped image separating means (slit glasses) which is provided in the vicinity of the observer and scans in the vertical direction and the above-described image display are used.

Next, the super multi-view system used in the present invention will be described.

The concept of the super multi-view system that forms the basis of the present invention is described in Kajiki (Communications and Broadcasting Corporation) et al., In "3D Image Conference '97", "Effect of monocular parallax in stereo display of super multi-view region". (Papers P166-P17
1). In this paper, a region where a plurality of parallax images enter the pupil of a single eye is referred to as a super multi-view region. In addition, the fact that one eye has a plurality of parallax images is called monocular parallax. In the super-multi-view region, there is a possibility that a natural stereoscopic image can be provided to a person by the effect of parallax generated within a single eye, that is, the effect of monocular parallax.

Next, the configuration of the apparatus according to this embodiment of the present invention will be described.

FIG. 1 is a configuration diagram schematically showing the configuration of the first embodiment of the present invention. In the present embodiment, the monocular parallax image is presented to the observer by different means in the horizontal direction and the vertical direction.

First, the horizontal monocular parallax generating means will be described. The generation of the parallax image in the horizontal direction is basically based on Japanese Patent Application
This is similar to the method of scanning a slit opening described in the embodiment of Japanese Patent No. 361956. Reference numeral 1 denotes an image display, for example, an electronic display such as a CRT, a liquid crystal display, and an LED matrix array panel. An image 7 having a predetermined parallax is displayed on the display surface of the image display 1. This image 7 has an appropriate viewing angle and can be observed from a wide range of up, down, left, and right.
The image display 1 may use other image generating means as long as the device can display image information. A screen portion of the projector or an image generation surface obtained by scanning with a laser beam or the like may be applied to this.

Reference numeral 2 denotes an optical system, and reference numeral 3 denotes an aperture panel as deflection control means. In the configuration of FIG. 1, a convex lens is used for the optical system 2. The aperture panel 3 is formed of a transmission type spatial light modulator, and electronically switches the transmittance at an arbitrary position to form an optical slit 19. A liquid crystal display, for example, corresponds to the deflection control means. The optical system 2 and the aperture panel 3 are arranged close to each other. The image display 1 and the aperture panel 3 are driven and controlled by a controller (control means) 50.

The slits 19 are provided at regular intervals T in the opening panel 3.
Is moving horizontally (horizontally) at high speed. As a sequence of the slit movement, a method of scanning from the right end of the aperture panel 3 or a method of scanning from the left end can be considered. However, any order may be used as long as the entire area is scanned within the fixed period T without overlap.

Next, the slit 19 generated in the opening panel 3
FIG. 2 shows a method of reproducing a three-dimensional image by using the image display 1
This will be described with reference to FIG.

FIGS. 2 to 5 are plan views of the present apparatus. Using this plan view, point images a to c in a three-dimensional space
The method of playing back is explained. FIG. 2 shows the state of the apparatus at a certain time t1. The slit 4 exists at the position in the figure. Although the image forming light based on the parallax image on the image display 1 diverges in various directions, only the light rays that have passed through the slit 4 reach the eyes of the observer.

The image display 1 and the optical system 2 are separated from each other by a minute distance equal to or longer than the focal length f of the optical system, and the light passing through the slit 4 is a parallel light beam or a convergent light beam equivalent thereto. Point images a to be reproduced at time t1
Since the position of c, the position of the slit 4 and the position of the optical system 2 are uniquely determined, the direction of the light after passing through the slit 4 is controlled by image information on the image display 1.

For example, in order to generate a light beam for reproducing the point image a, the light beam radiated from the point image a and refracted by the optical system 2 through the slit 4 is inversely traced, and the light beam and the image display 1 If the luminance corresponding to the point image a is given to the intersection 1a 'with the display surface, an appropriate light ray can be generated. Similarly, for the reproduction of other points b and c in the space, the positions of the intersections 1b 'and 1c' of the information to be displayed are uniquely determined.

As described above, the slit 4 moves at high speed over the entire surface of the panel 3, and accordingly, the image display 1
Is changed.

FIG. 3 shows the state of the apparatus at another time t2. Since the slit 4 has been moved to the position in the figure, the intersections 1a ', 1b', and 1c 'of the information of other parallax images to be displayed on the image display 1 change accordingly.
However, the method of determining the positions of the intersections 1a ', 1b', and 1c 'may be performed in accordance with the case of the time t1, and the information to be displayed on the image display 1 is unique regardless of the position of the slit 4. Can be determined. In this device, slit 4
Is set to be equal to or less than the permissible image persistence time (1/30 to 1/50 second) of the human eye, and the observer recognizes the movement of the opening (slit) 4. Can not. Therefore, when the time equal to or longer than the period T elapses, the observer recognizes as if light for reproducing the three-dimensional point images a, b, and c is emitted from the entire surface of the aperture panel 3 as shown in FIG. I do. If the point images a to c are extended to a set of a larger number of point images (if a larger number of point images are displayed on the image display 1), a three-dimensional surface can be expressed. As a result, a general three-dimensional image 8 can be reproduced.
Note that the description in this plan view is a description of the horizontal image forming position of the three-dimensional image, and has an optical means for converging light rays to some extent in the vertical direction.

However, in order to reproduce a natural state close to the observation of an actual three-dimensional object by the above method, the light beam to be reproduced must satisfy certain conditions. In accordance with the principles of the present invention, all reconstructed point images are represented as intersections of a plurality of light beams. Therefore, in order to recognize this, it is necessary that at least two beams enter the pupil of the observer. Pupil diameter of human eye is 2mm ~ 7
mm, first, the beam diameter must be 2 mm or less in diameter.

In order for at least two beams to enter the pupil of the observer, the distance between adjacent beams must be small to some extent. Considering this geometrically, it is necessary to consider the positional relationship as shown in FIG. That is, the distance between adjacent beams on the pinhole panel 3 is Δ, and the distance from the pinhole panel 3 to the point image P is L.
a, when the distance from the point image P to the pupil position of the observer is L, the inter-beam distance p at the pupil position of the observer is p = Δ * L
When the distance p is within 2 mm, two or more beams enter the pupil of the observer.

Therefore, if parameters such as the size of the pinhole, the resolution of the pinhole panel 3, the point image position to be reproduced, and the assumed observation position of the observer are set based on the above conditions, Recognizes the reproduced image of this apparatus as a natural three-dimensional image.

For example, the distance La from the aperture panel 3 to the reproduced image P is 300 mm, and the pupil position 11 of the observer from the reproduced image P is
When the distance L to 1 is 600 mm, Δ ≦ = 2La / L =
From 1 (mm), the resolution of the aperture panel 3 may be 1 mm or less.

Further, by appropriately controlling image information (parallax image) displayed on the image display 1, directivity is given to light for forming a reproduced image.

In the configuration described so far, the parallax images corresponding to the positions of the slits 4 are sequentially displayed on the image display 1. This provides the observer with a parallax image in the horizontal direction.

In the present embodiment, to generate a more natural stereoscopic image, a vertical parallax image is required. As a method for displaying a vertical parallax image, for example, Japanese Patent Application No.
Japanese Patent Publication No. 36195 discloses a method of scanning a pinhole-shaped opening.

In this method, the frame rate of the image display becomes very high, but a super multi-view state can be generated in the vertical direction, and a more natural three-dimensional display device can be provided. In the present embodiment, the vertical parallax image can be displayed by slightly increasing the frame rate of the image display device.

Next, a means for generating a vertical parallax image, which is a feature of this embodiment, will be described with reference to FIG. The principle of the parallax image generating means is basically the same as the method disclosed in Japanese Patent Application No. 9-368961, but the scanning direction of the slit is different. In FIG. 1, reference numeral 100 denotes slit glasses for generating vertical parallax. 101 is an observation frame that can be observed by a viewer through a slit, 102 and 103 (shaded portions) are light-shielding portions where light is blocked in the observation frame 101,
104 is a slit part through which light can be transmitted. Reference numeral 105 denotes a housing of the stereoscopic observation glasses in which an electric circuit and the like are stored. The slit 104 is moved by the controller 50 to the observation frame 10.
1 at a predetermined position. The longitudinal direction of the slit 104 is formed horizontally by a light modulation element such as a liquid crystal (LCD), and the slit 104 controls light blocking or transmission.

Next, the display timing of the parallax image of the present embodiment
Will be explained. Here, the display of parallax images and the vertical and horizontal
The timing at which a lit occurs will be described. Figures 6 and 7
Fig. 6 is a view for explaining slit scanning. Fig. 6 is an opening panel.
FIG. _nIs the nth
You.

FIG. 7 is a diagram showing an observation unit of the glasses 100. For convenience of explanation, the horizontal slit position (the number of parallax images) is 70, and the vertical slit position (the number of parallax images) is 5 in the description. S _H1 , S _H2 , S _H3 , の in FIG.
S _Hn , S _H70 indicate the slit position of the opening panel 3,
Correspondingly, 70 different suggestion images are displayed on the image display 1 respectively. Also, S _V1 , S _V2 , S _V3 ,
_SV4 and _SV5 indicate the opening positions of the slits of the slit glasses 100, and correspondingly, five different parallax images are displayed on the image display 1.

In this figure, the scanning order of the slit 19 of the aperture panel 3 is scanning in the direction from S _H1 to S _H70 , and in the slit glasses, scanning is from the position S _V1 to the position S _V5 .

FIG. 8 is a timing chart for explaining the timing of the slit glasses 100 and the slit 19 of the aperture panel 3. Slit glasses 10 of slit glasses 100
When the opening 4 is at the position S _V1, the slit of the opening panel 3 is scanned from the position S _H1 to the position S _H70 .

[0067] parallax images displayed at this time has 70 pieces of parallax images when the slit 104 is positioned S _V1 of the slit glasses 100, in which and with lateral parallax.

Similarly, the opening of the slit glasses is positioned at the position S _V2 ,
In the case of S _V3 , S _V4 , and S _V5 , 70 parallax pixels having different horizontal parallax and vertical parallax are displayed, and this is repeated. This repetition period T is the time when there is a human afterimage and 1
It is set to about / 50 to 1/60 seconds. Further, the number of parallax images necessary for one cycle T is 5 × 70 = 350. If T is set to 1/60 second, the frame frequency becomes 350 × 60 = 21000 Hz.

Incidentally, if the vertical parallax is to be generated in the same manner as in the horizontal direction in the method of scanning a pinhole-shaped opening described in Japanese Patent Application No. 9-319656 for reference, the frame rate is as follows. Become like

70 × 70 × 60 = 294000 Hz Further, the number of necessary parallax images is 70 × 70 = 4,900, which is much faster than in the present embodiment.

Next, the control signal and the image signal will be described.

FIG. 9 is a block diagram for explaining the flow of signals according to the present embodiment, and mainly shows the controller 50.
In the figure, reference numeral 51 denotes a system controller for controlling the apparatus, which optimizes the operation of the entire system by the state of each element inside the controller 50 and the state of a control signal from the outside.

Reference numeral 52 denotes an interface for receiving a video source of a three-dimensional image from the outside of the apparatus. Examples of the video source include video data from a computer. 53
Is an image display 1, an aperture panel 3, and slit glasses 10
This is a synchronization control unit that synchronizes 0, and controls the parallax image display of the image display 1, the slit position of the slit glasses 100, and the slit position of the aperture panel 3 at the timing described with reference to FIG. 8. Reference numeral 54 denotes an image display driver for controlling the display of the image display, 55 denotes an aperture panel driver for controlling the display of the aperture panel (slit position), and 56 denotes a slit glasses driver for controlling the display of the slit of the slit glasses. is there.

The features of the first embodiment described above are summarized as follows. -There is a monocular parallax image in the vertical direction and the horizontal direction, and there is a natural stereoscopic effect. -There is a motion parallax in the lateral direction, there is also a wraparound effect, and stereoscopic vision is possible even when the observation position changes. -If the slit glasses of the present embodiment are prepared, two or more persons can observe a stereoscopic image.

Next, another configuration of the first embodiment will be described.

In the first embodiment, the slit-like aperture panel 3 that scans in the horizontal direction and the image display 1 that displays the parallax image are used to generate the monocular parallax in the horizontal direction. In order to generate the image, a slit-shaped opening control unit (slit glasses) provided near the observer and scanning in the vertical direction is used.

In addition, as a means for generating a horizontal-view image difference, the following means described in Japanese Patent Application No. 10-2111076 may be used.・ Mechanical vibration of the micro lens array and display of parallax images. A means for deflecting a display image with a polygon mirror and synchronizing the display devices.

Further, it may be constituted by a very high definition display device and a microphone lens array corresponding thereto.

Next, a second embodiment of the present invention will be described.

Although the first embodiment has been described on the premise that a video source is a parallax image having a monocular parallax, it is not possible to correspond to a video source of a normal two-dimensional image or a binocular parallax image of the right eye and the left eye. Desirable as a display device.

In the present embodiment, the slit portion of the slit glasses 100, the slit 19 of the aperture panel 3, and the image display control of the image display 1 are appropriately performed so as to correspond to a conventional two-dimensional display source or a binocular display source. ing.

Next, the case of performing two-dimensional display will be described.

The following three types of control are performed for two-dimensional display in the configuration of the first embodiment.

In the slit movement from the position S _H1 to the position S _H70 at the timing of the opening panel 3 shown in FIG. 8, if all the same images are displayed on the image display 1, an image without parallax, that is, a two-dimensional display is possible. become.

The image display 1 performs the same as the conventional two-dimensional display, and makes either the aperture panel 3 or the slit glasses 100 all transparent.

The image display 1 performs the same as the conventional two-dimensional display, and makes both the aperture panel 3 and the slit glasses 100 all transparent.

In the cases described above, the amount of light reaching the observer, that is, the luminance is different. Therefore, in each case, the luminance of the image display is adjusted by the system controller 51.

The position for two-dimensional display is one plane of a three-dimensional space which has an image forming relationship with the image display 1 by the optical system of this embodiment. Further, conversion may be applied to the display image of the image display for the purpose of removing the distortion of the two-dimensional image.

Next, the case where the slit glasses are provided with the attachment detection will be described.

By providing a detector for whether or not the observer wears the slit glasses, it is possible to switch between two-dimensional display and three-dimensional display, and the usability of the present embodiment is improved. For example, if there is a light emitting element for light projection on the side of the observer wearing slit glasses and a light receiving element for receiving reflected / return light from the observer of the light emitting element, the observer easily wears the slit glasses. Can be detected. When it is determined that the observer does not wear the slit glasses, a device with good operability can be provided by performing two-dimensional display.

Next, a case where a stereoscopic image of binocular parallax is reproduced will be described.

When a binocular disparity image signal for the right eye and the left eye is input as a video source, the right and left sides of the glasses are switched between light transmission and light shielding, and the aperture panel is made transparent. 3D, a stereoscopic image can be displayed by binocular parallax similarly to the shutter glasses system.

Next, the case of detecting the type of image will be described.

The video sources handled in this embodiment are parallax images for generating monocular parallax, two-dimensional images, and binocular parallax images. By detecting the type of these images and automatically switching the display method, the device becomes easy to use.

According to the present embodiment, by performing predetermined control on the image display 1, the aperture panel 3, and the slit glasses 100, it becomes possible to display a two-dimensional display or a stereoscopic image by binocular parallax.

[0096]

According to the present invention, a natural three-dimensional image can be observed, and an image display capable of observing by switching between displaying a two-dimensional image and a three-dimensional image (binocular parallax or monocular parallax) or both. An apparatus or an image display method can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a main part of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of three-dimensional reproduction in the present invention.

FIG. 3 is an explanatory diagram of three-dimensional reproduction in the present invention.

FIG. 4 is an explanatory diagram of three-dimensional reproduction in the present invention.

FIG. 5 is an explanatory diagram of three-dimensional reproduction in the present invention.

FIG. 6 is an explanatory diagram of display timing of an image on an aperture panel according to the present invention.

FIG. 7 is an explanatory diagram of a display timing of an image of a slit camera according to the present invention.

FIG. 8 is an explanatory diagram of display timings of images of an aperture panel and a slit camera in the present invention.

FIG. 9 is a block diagram illustrating each function in the present invention.

FIG. 10 is a schematic view of a main part of a conventional stereoscopic image display device.

FIG. 11 is a schematic diagram of a main part of a display unit of a conventional stereoscopic image display device.

FIG. 12 is a schematic diagram of a main part of a part of a conventional stereoscopic image display device.

FIG. 13 is a schematic view of a main part of a conventional stereoscopic image display device.

[Description of Signs] 1 Image display 2 Optical system 3 Aperture panel 7 Parallax image 8 3D image 19 Optical slit 50 Controller 51 System controller 52 Interface 53 Synchronization control unit 54 Image display drive unit 55 Open panel drive unit 56 Slit glasses driving unit 100 Slit glasses 101 Observation frame 102, 103 Light shielding unit 104 Slit unit 105 Housing

Claims (14)

[Claims] An image display for displaying a parallax image, and a deflection control means for deflecting and controlling the display directivity of the parallax image in synchronization with the parallax image to display and observe a monocular parallax image in a horizontal direction. An image display device comprising: an image separation unit that can be attached to the head or face of a person and that displays a vertical monocular parallax image in synchronization with the image display. 2. The image display apparatus according to claim 1, wherein two or more images of the horizontal and vertical monocular parallax images are displayed on an observer's pupil. 3. The image display device according to claim 1, wherein said deflection control means has an aperture panel configured to scan a slit-shaped aperture in a horizontal direction. 4. The image display device according to claim 1, wherein said deflection control means has a microlens array that vibrates in a lateral direction. 5. The image display device according to claim 1, wherein said deflection control means has a polygon mirror for reflecting and deflecting a light beam from said image display. 6. The frame frequency of the image display device is a product of the number of the parallax images in the horizontal direction, the number of separations of an image separation unit attachable to a head or face of an observer, and the reciprocal of the afterimage time. The image display device according to claim 1, wherein the image display device is provided. 7. The image display device according to claim 6, wherein the same two-dimensional image is displayed as the parallax image to be displayed for each of the afterimage times, and two-dimensional display is performed. 8. A parallax in which either one of the deflection control means for generating the parallax image in the horizontal direction or the image separation means which can be attached to the head or face of the observer is transmitted and controlled, and is displayed every afterimage time. Display the same two-dimensional image as the image,
The image display device according to claim 3, wherein a two-dimensional image is displayed. 9. A parallax image to be displayed for each residual image time by controlling transmission of both the deflection control means for generating the horizontal parallax image and the image separating means attachable to the observer's head or face. The image display device according to claim 3, wherein the same two-dimensional image is displayed to perform two-dimensional display. 10. A deflection control means for alternately controlling light shielding and transmission of all right and left eyes of an image separating means which can be worn on the observer's head or face, and generating a horizontal parallax image. The image display device has a control means for transmitting all the light, and the parallax images for the right eye and the left eye are alternately displayed on the image display in synchronization with the shading and transmission of the image separating means, and the binocular parallax image is displayed by the observer The image display device according to claim 3, wherein the image display device displays a three-dimensional image by allowing the user to observe the image. 11. The image display device according to claim 1, wherein the brightness of the image display is adjusted according to the type of the display image displayed on the image display. 12. An image separating device comprising: means for detecting whether or not the observer wears an image separating means which can be worn on the head or face of the observer; 2. The display according to claim 1, wherein a two-dimensional image is displayed.
Image display device. 13. The image display device according to claim 12, wherein the three-dimensional display displays a three-dimensional image of binocular parallax or a three-dimensional image of monocular parallax. 14. An image display method comprising displaying image information with the image display device according to claim 1. Description: