JP2002228978A - Stereoscopic image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stereoscopic image display device which makes images stereoscopically visible in a natural state by utilizing a monocular parallax effect. SOLUTION: The stereoscopic image display device which performs observation of a stereoscopic view by successively making rays having parallax image information on the plural regions of the pupil of the single eye of an observer has control means for controlling the incident regions of the rays in the regions on the pupil surface where the two adjacent regions are displaced in a horizontal direction and are displaced in a perpendicular direction as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image display apparatus capable of reducing a burden on an observer's eyes and allowing a three-dimensional image to be properly viewed in a natural state without fatigue.

[0002]

2. Description of the Related Art Conventionally, three-dimensional objects (three-dimensional objects, three-dimensional objects)
Various methods have been tried as a method of reproducing a. Of these methods, methods of causing the observer to perform stereoscopic vision using binocular parallax (polarized glasses system, lenticular system, etc.) have been widely used conventionally. However, in these methods, since a contradiction arises between the stereoscopic recognition based on the accommodation function of the eyes and the stereoscopic recognition based on the binocular parallax, the observer often feels tired or uncomfortable. Therefore, several methods of three-dimensional image reproduction satisfying other three-dimensional recognition functions of the eye without relying only on binocular parallax have been attempted.

[0003] According to Chapter 3, Section 8 "Study on stereoscopic vision in super multi-view area" of the publication "Advanced Stereoscopic Video Communication Project Final Result Report" published by the Telecommunications and Broadcasting Corporation in 1997, Under the stereoscopic display method of the "super multi-view area" in which a multi-viewpoint image in which the parallax is finely divided so that a plurality of parallax images enter the pupil of a single eye, the focus adjustment of the observer's eye is performed by binocular parallax. Is guided in the vicinity of the pseudo three-dimensional image induced by the, reducing the fatigue and discomfort of the observer,
It has been.

[0004] That is, a conventional stereoscopic display method for presenting parallax images from two viewpoints to both eyes is described as follows.
If the method of presenting the parallax image from the viewpoint to the n viewpoints is extended and the distance between two adjacent points of the n viewpoints is made smaller than the pupil of the observer, the eyes become tired due to the “monocular parallax effect”. There is a view that it will be difficult to display in three dimensions.

[0005] Further, in the same report, Chapter 3, Section 6, "Focused Light Source Array"
In (R & D of multi-view stereoscopic display by (FLA)), a concrete example of practicing the above theory is shown. FIG. 21 is a configuration diagram of this specific example. FLA in FIG. 21 is a focused light source array
(Focused Light Array), which has a configuration as shown in FIG. The FLA converts light of a light source (Light Source) such as a semiconductor laser into an optical system (Beam
Shaping optics is used to form a thin light beam, and the light beam is arranged in an arc shape as shown in FIG. 22B and all the light beams are collected at the center of the circle. Focus formed in this way
(Focal Point) is an optical system (Objective lens, Imaging lens)
Re-images on the vertical diffuser (Vertical Diffuser) by the scanning system (Vertical Scanner, Horizontal Scanner).
A two-dimensional image is formed by high-speed scanning in two dimensions. If the scanning cycle is within the permissible afterimage time of the observer's eyes (within about 1/50 second), image observation without flicker becomes possible. The focal point at a certain moment constitutes an individual pixel of the two-dimensional image, and each pixel is considered as a luminescent spot that emits light rays in different directions by the number of original light sources. The direction in which the light beam is emitted can be determined by selecting the light source to emit light. Since the exit directions of the light beams differ by a very small angle, the pupil of the observer at the observation position is 2
The condition is such that more than two different light beams are incident. In other words, according to the above configuration, stereoscopic display of a “super multi-view area” in which a plurality of parallax images are incident on a single eye of the observer becomes possible, and focus adjustment of the observer's eyes is guided to the vicinity of the stereoscopic image, resulting in fatigue of observer And discomfort is reduced.

[0006]

The conventional stereoscopic image observation shown in FIG. 21 has the following problems.

The most distinctive feature of the "super multi-view area" stereoscopic display is that the "monocular parallax effect" guides the observer's eyes to the vicinity of the stereoscopic image, thereby reducing the fatigue and discomfort of the observer. It is. In order to generate the “monocular parallax effect”, it is necessary to present a plurality of parallax images in a single eye. That is, it is necessary to prepare a plurality of parallax images from viewpoints at extremely small intervals in advance. In this case, since the total information amount of the image is inevitably increased, only a horizontal parallax image having a large effect on stereoscopic perception is presented, and the vertical parallax information is discarded to reduce the information amount. Methods are often employed. The above conventional example also reproduces a three-dimensional image by this method.

However, when such a method is employed, the "monocular parallax effect" is placed in an unbalanced state. Even if the horizontal focus adjustment of the observer's eye is guided to the vicinity of the stereoscopic image by the “monocular parallax effect”, the focus adjustment in the vertical direction remains at another position, so that the observer experiences astigmatism. Observation of the generated image will be continued.

[0009] This may reduce the "monocular parallax effect" and put a burden on the observer's visual system.

The present invention utilizes a monocular parallax effect to prevent an increase in the amount of information when observing a stereoscopic image, and to allow the observer to observe the stereoscopic image satisfactorily without fatigue. The purpose is to provide.

[0011]

According to a first aspect of the present invention, there is provided a stereoscopic image display apparatus in which a light beam having parallax image information is made incident on a plurality of regions of a pupil of a single eye of an observer to perform stereoscopic observation. In the stereoscopic image display apparatus to be performed, two adjacent areas on the pupil plane have control means for controlling an incident area of the light beam in an area which is displaced in the horizontal direction and also displaced in the vertical direction. .

According to a second aspect of the present invention, there is provided a three-dimensional image display device in which a plurality of light beams having image information are made incident on a pupil of a single eye of an observer, and the observer's eyes are adjusted at the intersection of the light beams. In a stereoscopic image display apparatus that performs stereoscopic vision by focusing, when a center of a light beam incident on a pupil of an observer is determined as a light incident position center, a vertical component of at least one light incident position center is different from another light incident position center. It is characterized by being different from the vertical component.

According to a third aspect of the present invention, in the second aspect, the plurality of light rays incident on the monocular of the observer are:
It is characterized in that the number of vertical components and the number of horizontal components of the light beam including the center of the light incident position are the same.

A fourth aspect of the present invention is characterized in that, in the second aspect of the invention, the plurality of light beams have different horizontal components and vertical components at the center of the light incident position.

According to a fifth aspect of the present invention, there is provided a three-dimensional image display device in which light rays are incident on the plurality of regions of the pupil of the observer from different directions, and the eye of the observer is adjusted at the intersection of the light beams. In a stereoscopic image display device that performs stereoscopic vision by focusing on, when the plurality of regions are divided into three or more regions each with or without a predetermined interval in the horizontal and vertical directions, It is characterized by being every other area in the horizontal and vertical directions.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, when the pupil is divided into the same number of regions in the horizontal direction and the vertical direction, the plurality of regions are one for the horizontal direction and the vertical direction.
It is characterized by being every other area.

According to a seventh aspect of the present invention, when the pupil is divided into three or more areas with the same area in the horizontal direction and the vertical direction, the plurality of areas are one in the horizontal direction and the vertical direction. It is characterized by being every other area.

In the stereoscopic image display apparatus according to the present invention, light beams are sequentially incident from different directions on each of a plurality of regions of the observer's pupil, and the observer's eye is positioned at the intersection of the light beams. In a stereoscopic image display apparatus that performs stereoscopic vision by focusing adjustment, when the center of a light beam incident on a pupil of an observer is set as a light incident position center, a line segment connecting the light incident position center has a triangular shape. It is characterized by having.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a technical field to which a stereoscopic image display device (stereoscopic display device) of the present invention can be applied will be described. INDUSTRIAL APPLICABILITY The stereoscopic image display device of the present invention is applicable to a stereoscopic display device of a type that presents a plurality of parallax images to a single eye of an observer and expresses the depth of a three-dimensional image by an intersection of a plurality of light rays incident on the single eye. For example, the present invention can be applied to an apparatus that performs stereoscopic viewing by sequentially or simultaneously causing light beams having parallax image information to enter a plurality of regions of a pupil of a single eye. First,
The principle of this type of stereoscopic display device will be described.

Many conventional stereoscopic display devices express stereoscopic vision using binocular parallax. This is because when a human observes a three-dimensional object with both eyes, there is a parallax between the retinal image of the right eye and the retinal image of the left eye. The principle is that stereoscopic recognition becomes possible if two images having the following are independently presented to the left and right eyes.

FIG. 1 is an explanatory diagram of the principle of the three-dimensional recognition. The figure shows a state in which the depth of the point 1 on the solid (object) 2 is recognized using binocular parallax. Reference numeral 3 denotes an image display surface. When the point 1R is displayed on the image display surface 3 and presented to only the right eye, and the point 1L is displayed on the image display surface 3 and presented only to the left eye, the convergence of the eye becomes the position of point 1. Therefore, the human visual recognition system can three-dimensionally recognize the point 1 at the intersection of the straight line connecting the point 1R and the right eye and the straight line connecting the point 1L and the left eye.

However, at this time, the adjustment of the lens of the eye is point 1
However, there is a divergence between accommodation and convergence of the eye. It is said that if the deviation is large, an excessive load is imposed on the visual recognition system, which may cause fatigue and discomfort during observation.

On the other hand, a stereoscopic display device of the type that generates parallax within a single eye as shown in the conventional example has appeared. FIG. 2 is an explanatory diagram of the principle of the three-dimensional recognition. FIG.
Indicates a state in which the depth of the point 1 on the three-dimensional object 2 is recognized using the parallax in the monocular 5 in the same manner as described above. Reference numeral 3 'does not need to be an image display surface, and can be considered as a light beam focal plane where light beams representing a three-dimensional object are the thinnest. (Because the diameter of the light beam is the smallest at the light beam focal plane, and the light seems to diverge therefrom, the light beam cross-section at the focal position is referred to herein as the "light source.") In order to generate parallax in the monocular 5, it is necessary that a plurality of light beams be independently incident on different positions of the crystalline lens (pupil) 4 of the eye at different angles as shown.

In FIG. 2, the rays incident on the positions of the regions 4L and 4R of the crystalline lens 4 of the eye are separated, and
Are in a meeting. Under such circumstances, the human visual recognition system recognizes the intersection 1 of the light beam as the divergence point of the light beam, adjusts the crystalline lens 4 so that the eye is in focus on the point 1, and places the image point of the point 1 on the fundus. 1E can be formed. Therefore, in a stereoscopic display device of this type, unlike a conventional binocular parallax stereoscopic display device, adjustment of the observer's eyes can be guided to the vicinity of a stereoscopic image.

Generally, presenting a plurality of parallax images to a single eye increases the amount of information. If, for example, a method of discarding vertical parallax is adopted to reduce the amount of information, the focusing of the observer's eye is placed under an unbalanced condition including astigmatism.

Next, these problems will be described with reference to FIGS. First, an increase in the amount of information will be described. FIG. 3 and FIG. 4 are a plan view and a side view in a stereoscopic image display state in which a total of nine parallax images in the horizontal direction 3 × the vertical direction 3 are presented in the monocular 5.

At this time, since the rays LI expressing the three-dimensional image 1 are all incident on the monocular 5 at different angles, the crystalline lens 4 of the eye functions and the image 1E of the point 1 is formed on the fundus. . At this time, the horizontal imaging plane PH of the three-dimensional image 1 and the vertical imaging plane PV coincide with each other.

FIG. 5 is a view of the state of the light beam LI entering the eye hole 4 as viewed from the front of the eye. Dotted line is 9 due to pupil plane 4a
2 shows a cross section of a light beam of a book. (In this case, the cross section of the light beam is assumed to be a square, but the cross section may have any other shape.) In this stereoscopic image display method, the horizontal imaging plane PH of the three-dimensional image 1 and the vertical Since the imaging planes PV coincide with each other, the accommodation of the eye becomes easier to match the three-dimensional image 1. However, since it is necessary to present nine rays having different incident angles, that is, nine pieces of parallax image information to a single eye,
The amount of information to be handled is nine times that of the normal binocular parallax stereoscopic display. In other words, presenting a plurality of parallax images to a single eye can guide the adjustment of the observer's eyes to the vicinity of the stereoscopic image, but at the cost of increasing the amount of information.

On the other hand, consider a case where a method of discarding vertical parallax is adopted to reduce the amount of information. FIG. 6 is a side view of a stereoscopic image display state in which three parallax images are presented in the horizontal direction in the monocular 5 and the vertical ray focal plane PV is the position of the vertical diffusion optical element 6.
Shows a side view of a stereoscopic image display state in which three parallax images are presented in the horizontal direction in the monocular 5 and the light ray focal plane PV in the vertical direction is set at infinity. In each case, the plan view is the same as that of FIG. 3, but the state of the light beam incident on the eye is as shown in FIG. 8 when viewed from the front of the eye. Dotted lines show cross sections of three rays LI by the pupil plane 4a. When the above method is adopted, only three pieces of parallax image information need to be prepared, so that there is an advantage that the amount of information to be handled is only three times that of a normal binocular parallax method stereoscopic display.

However, the horizontal imaging plane P of the three-dimensional image 1
Astigmatism occurs due to the difference between H and the vertical imaging plane PV, and the adjustment mechanism of the observer's eyes becomes unbalanced, and it becomes difficult for the eyes to adjust to the three-dimensional image 1. There is.

The present embodiment employs means for simultaneously solving the problems of the above two methods (increase in the amount of information and difficulty in adjusting the eyes). FIG. 9 is a front view of the eye 4 in the stereoscopic image display method employing the present invention. What is characteristic in this embodiment is that the light beam LI is emitted from the pupil plane 4 of the eye as shown in FIG.
The point "a" is "staggered arrangement" in which the incident positions are alternately arranged.

Here, as shown in FIG. 9, the control unit controls the incident area of the light beam so that two adjacent areas 4 a 1 and 4 a 2 on the pupil plane are displaced in the horizontal direction and also in the vertical direction (vertical direction). (Not shown).

That is, in this embodiment, the area of the light LI where the pupil 4a is incident is divided into three parts in the horizontal direction and three parts in the vertical direction.
While the light beam is divided into a total of nine regions, the light beam never enters a region that is continuous in the horizontal and vertical directions.

With this arrangement, the number of parallax images to be presented to a single eye is suppressed to four. However, since the plan view and the side view of the present embodiment are the same as the plan view 3 and the side view 4 in the case of presenting nine parallax images, the horizontal imaging plane PH of the three-dimensional image 1 and the vertical imaging plane PH are different. The imaging planes PV coincide,
The adjustment of the observer's eyes is in a state where it is easy to adjust to the three-dimensional image 1.

An embodiment in which the number of parallax images to be presented to a single eye is reduced to three by applying the principle of the present invention will be described below. FIG. 10 is a front view of the eye 4 of the present embodiment. In this embodiment, the position where the light beam LI enters the pupil 4a of the eye is inclined by 45 degrees with respect to the horizontal line, and a plurality of positions, here three, are arranged. FIG.
Then, five were arranged. With this ingenuity, the number of parallax images to be presented to the monocular 4 is reduced to three. However, also in this embodiment, the plan view and the side view are the same as the plan view 3 and the side view 4 when nine parallax images are presented.
The horizontal image plane PH and the vertical image plane P of the two-dimensional image 1
V coincides, and the adjustment of the observer's eyes is in a state of being easily adjusted to the three-dimensional image 1.

As described above, in this embodiment, when the center of the light beam entering the pupil of the observer is determined as the center of the light incident position, the vertical component of at least one light incident position center is the vertical component of the other light incident position center. Thus, good stereoscopic vision is performed with a small amount of information.

In addition, considering the symmetry of the position of the light ray entering the eye, as shown in FIGS.
a may be arranged in a triangular shape. As shown in FIG. 24, in a stereoscopic image display device that performs stereoscopic vision by focusing the adjustment of the observer's eye on the intersection point of the light beams, the plurality of regions define the pupil with respect to the horizontal direction and the vertical direction. When each is divided into three or more areas with or without an interval, every other area in the horizontal direction and the vertical direction may be set.

As described above, in the present embodiment, when the pupil 4 is divided into a plurality of regions, in the stereoscopic image display device which performs stereoscopic vision by focusing the adjustment of the observer's eye at the intersection of the light beams. When the pupil is divided into three or more regions at predetermined intervals in the horizontal direction and the vertical direction, or at intervals, the regions are alternately arranged in the horizontal and vertical directions. Thus, good stereoscopic vision is performed with a small amount of information.

Next, control means for realizing the above-described light beam incident state will be described. In the conventional example, the focal point of the focused light source array (FLA) is an optical system (Objective l).
ens, Imaging lens)
r), and the image is scanned by the scanning system (Vertical Scanner, Horizontal S
scan was performed two-dimensionally at high speed. In this embodiment, the vertical diffusion plate is removed, and the way of arranging the FLAs is devised. 14 and 15 show a plan view and a side view of the present embodiment, respectively. When the vertical diffuser is removed, the beam directivity in the vertical direction is maintained, so that the distribution of the exit pupil of the FLA is directly reflected on the beam directivity after focusing. For example, when FLAs are combined vertically and horizontally as shown in FIG. 16, the exit pupil of the light beam after focusing is as shown by a dotted line in the figure, and this is reflected on the position of the light beam entering the pupil of the observer. . Therefore, when the observer observes an arbitrary focus, four to five light rays enter the pupil 4 of the observer as shown in FIG. (The dotted line in the figure is the ray cross section at the pupil position). This realizes the same light incident state as in FIG. 9 described above.
If the scanning optical system scans the focal point horizontally, the pupil is also scanned, so that the observer can observe the focal point with both eyes. At this time, if not only binocular parallax but also a plurality of light rays incident on the monocular have monocular parallax information, the observer can adjust his eyes to the stereoscopic image reproduction position by the monocular parallax effect.

Next, the second means for realizing the above-mentioned light incident state will be described. In the present invention, stereoscopic display of the “super multi-view area” is realized using liquid crystal shutter glasses. FIG. 17 is a configuration block diagram of the stereoscopic image display device system of the present invention.

In the figure, 100 is stereoscopic observation glasses as image separation means, 200 is a monitor as display means for switching and displaying parallax images at high speed, and 300 is a controller for switching parallax images and controlling the slit opening of the stereoscopic observation glasses 100. (Control means), and also has an interface function with a video source. The controller 300 has a monitor driving circuit 301, a spectacle driving circuit 302 for slitting the stereoscopic observation glasses 100, and a synchronization circuit 303 for synchronizing parallax image information displayed on the monitor 200 and slit formation of the stereoscopic glasses. . FIG. 18 is a perspective view of a main part of the stereoscopic observation glasses of the present invention. In the figure, 101L and 101R are observation frames as observation means that an observer can observe through the opening, 101L and 102R are light-shielding portions where light is blocked in the observation frames 101L and 101R, and A2L and A2R are light-transmittable. TS are openings A2L, A2
The width of R is shown. The openings are sequentially scanned at a high speed, and the parallax images corresponding to the positions of the openings are synchronized with each other on the monitor 2.
Displayed above 00. If the width TS of the opening is sufficiently smaller than the pupil of the observer, a parallax image with a viewpoint interval smaller than the pupil of the observer will be presented, and the “monocular parallax effect” will occur. That is, the configuration of the present invention enables stereoscopic viewing of the “super multi-view area”.

In this configuration, the parallax information in the vertical direction is present, and astigmatism is generated in the observable three-dimensional image so that an unnatural image is not displayed to the observer's eyes. That is, the configuration example of the present embodiment simultaneously reduces the amount of information and forms a reproduced image without astigmatism.

FIGS. 19 and 20 are explanatory views of a state of three-dimensional image reproduction according to the present embodiment. Square openings A1 to A in FIG.
8 are provided for each monocular, as indicated by the dotted line in the figure, for a total of eight. (The dashed line in the figure indicates the arrangement of the observer's eyes). At any given moment, one of the eight openings A1 to A8 is always in an optically transmissive state, and the other seven are in an optically shielded state. FIG. 2 is a timing chart of a shutter signal for controlling these apertures and a parallax image signal displayed on the monitor 200 in synchronization with the shutter signal.
0 is shown. The image signals S1 to S8 have apertures A1 to
It means a parallax image signal observed from the position A8. Figure 1
In the example of No. 9, the aperture A2 is transparent, and at this time, the parallax image S2 is displayed on the monitor. When the opening A2 is blocked, the opening A3 subsequently becomes transparent, and the parallax image S3 is displayed on the monitor. The same operation is repeated for opening and closing the other apertures. As a result, the observer can observe a natural stereoscopic image containing monocular parallax without astigmatism.

[0044]

According to the present invention, it is possible to observe a stereoscopic image favorably without fatigue by observing an increase in the amount of information when observing the stereoscopic image by utilizing the monocular parallax effect. A stereoscopic image display device can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the principle of three-dimensional recognition.

FIG. 2 is an explanatory diagram of stereoscopic recognition of a monocular parallax effect.

FIG. 3 is an explanatory diagram of a monocular parallax effect according to the present invention.

FIG. 4 is an explanatory diagram of a monocular parallax effect according to the present invention.

FIG. 5 is an explanatory diagram of stereoscopic recognition of a monocular parallax effect.

FIG. 6 is an explanatory diagram of a conventional monocular parallax effect.

FIG. 7 is an explanatory diagram of a conventional monocular parallax effect.

FIG. 8 is an explanatory view of a conventional monocular parallax effect.

FIG. 9 is a front view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 10 is a front view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 11 is a front view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 12 is a front view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 13 is a front view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 14 is an explanatory diagram of control means for obtaining a monocular parallax effect according to the present invention.

FIG. 15 is an explanatory diagram of a control unit for obtaining a monocular parallax effect according to the present invention.

FIG. 16 is an explanatory diagram of light source means for obtaining a monocular parallax effect according to the present invention.

FIG. 17 is a main block diagram of an embodiment of the present invention.

FIG. 18 is an explanatory view of an apparatus for forming a super multi-view area according to the present invention.

FIG. 19 is an explanatory diagram of three-dimensional image reproduction according to the present invention.

FIG. 20 is an explanatory diagram of three-dimensional image reproduction according to the present invention.

FIG. 21 is an explanatory diagram of a conventional stereoscopic image display device.

FIG. 22 is an explanatory diagram of a conventional stereoscopic image display device.

FIG. 23 is a plan view of an eyeball when the monocular parallax effect according to the present invention is used.

FIG. 24 is a plan view of an eyeball when the monocular parallax effect according to the present invention is used.

[Explanation of symbols]

 Reference Signs List 1 1 point on 3D object 2 3D (object) 3 Image display surface 4 Pupil 5 Monocular PH, PV imaging surface 1E Fundus

[Procedure amendment]

[Submission Date] April 13, 2001 (2001.4.1
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

FIG. 5 is a diagram showing the state of the light beam LI entering the pupil 4 as viewed from the front of the eye. Dotted line is 9 due to pupil plane 4a
2 shows a cross section of a light beam of a book. (In this case, the cross section of the light beam is assumed to be a square, but the cross section may have any other shape.) In this stereoscopic image display method, the horizontal imaging plane PH of the three-dimensional image 1 and the vertical Since the imaging planes PV coincide with each other, the accommodation of the eye becomes easier to match the three-dimensional image 1. However, since it is necessary to present nine rays having different incident angles, that is, nine pieces of parallax image information to a single eye,
The amount of information to be handled is nine times that of the normal binocular parallax stereoscopic display. In other words, presenting a plurality of parallax images to a single eye can guide the adjustment of the observer's eyes to the vicinity of the stereoscopic image, but at the cost of increasing the amount of information.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

The present embodiment employs means for simultaneously solving the problems of the above two methods (increase in the amount of information and difficulty in adjusting the eyes). FIG. 9 is a front view of the crystalline lens 4 in the stereoscopic image display method employing the present invention. What is characteristic in this embodiment is that the positions where the light rays LI enter the pupil plane 4a of the eye are arranged in a staggered manner as shown in the figure.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

An embodiment in which the number of parallax images to be presented to a single eye is reduced to three by applying the principle of the present invention will be described below. FIG. 10 is a front view of the crystalline lens 4 of the present embodiment. In this embodiment, the position where the light beam LI enters the pupil 4a of the eye is inclined by 45 degrees with respect to the horizontal line, and a plurality of positions, here three, are arranged. In FIG. 23, five are arranged. With this ingenuity, the number of parallax images to be presented to the monocular 5 is reduced to three. However, also in this embodiment, the plan view and the side view are the same as the plan view 3 and the side view 4 in the case where nine parallax images are presented, so that the horizontal imaging plane PH of the three-dimensional image 1 and the vertical direction Are in agreement, and the adjustment of the eyes of the observer is easily adjusted to the three-dimensional image 1.

Claims (8)

[Claims] The present invention relates to a plurality of regions of a pupil of a single eye of an observer.
In a stereoscopic image display device that performs stereoscopic observation by irradiating light rays having parallax image information, two adjacent areas on the pupil plane are displaced in the horizontal direction and displaced in the vertical direction. A stereoscopic image display device comprising a control unit for controlling a light incident area. 2. A stereoscopic image in which a plurality of light beams having image information are made incident on a monocular pupil of an observer, and adjustment of the observer's eye is focused on an intersection of the light beams to perform stereoscopic vision. In the display device, when the center of the light beam incident on the pupil of the observer is defined as the light incident position center, a vertical component of at least one light incident position center is different from a vertical component of another light incident position center. Stereoscopic image device. 3. A light beam incident on a single eye of the observer, wherein the number of vertical components and the number of horizontal components of the light beam including the center of the light incident position are the same.
Stereoscopic image display device. 4. The three-dimensional image display device according to claim 2, wherein said plurality of light beams have different horizontal components and vertical components at the center of the light incident position. 5. A stereoscopic system in which light beams are incident from different directions on each of a plurality of regions of a pupil of an observer, and the observer's eyes are focused on the intersections of the light beams to perform stereoscopic vision. In the image display device, when the pupil is divided into three or more regions with or without a predetermined interval in the horizontal direction and the vertical direction, the plurality of regions are one in the horizontal direction and the vertical direction. A three-dimensional image display device, characterized in that the region is every other region. 6. The apparatus according to claim 5, wherein, when the pupil is divided into the same number of areas in the horizontal and vertical directions, the plurality of areas are every other area in the horizontal and vertical directions.
Stereoscopic image display device. 7. The method according to claim 1, wherein the pupil is divided into three or more regions having the same area in the horizontal direction and the vertical direction, and the plurality of regions are every other region in the horizontal direction and the vertical direction. The stereoscopic image display device according to claim 5. 8. A light beam is sequentially incident on each of a plurality of regions of the pupil of the observer from different directions, and the adjustment of the observer's eye is focused on the intersection of the light beams to perform stereoscopic vision. In the stereoscopic image display device, when the center of the light beam incident on the pupil of the observer is set as the light incident position center, a line segment connecting the light incident position centers has a triangular shape. .