JP3453086B2 - Three-dimensional display method and head-mounted display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional display method and a head mounted display device, and in particular,
The present invention relates to a three-dimensional display method and a head mounted display device capable of electronically reproducing a moving image by reducing the amount of information of a three-dimensional stereoscopic image.

[0002]

2. Description of the Related Art As a conventional head-mounted display device for stereoscopically displaying electrically rewritable moving images, a flat display device as shown in FIG. 11 is well known. The flat panel display device shown in FIG. 11 includes a liquid crystal display device (LCD) (53L, 53R) and a convex lens (54L, 5L).
4R), and the principle of the flat panel display device shown in FIG. 11 will be described below. Images of the three-dimensional object 501 viewed from different directions (referred to as parallax images) are captured by, for example, cameras (52L, 52R). Images from the cameras (52L, 52R) are input to the left and right liquid crystal display devices (53L, 53R) and displayed.
The observer views the different display images of the left and right liquid crystal display devices (53L, 53R) by using different convex lenses (54L, 54R).
R) through left and right eyes (55L, 55R) separately. Thereby, the observer can observe the parallax image 506 with both eyes at the same time, and stereoscopic vision by binocular parallax is possible.

[0003]

However, in the flat panel display device shown in FIG. 11, it is possible to present binocular parallax in a certain range in the depth direction, but binocular parallax, convergence, and eye focus are Since there is a contradiction between the two, natural stereoscopic vision is difficult. That is, in the flat panel display device shown in FIG. 11, the focus of the eye is the convex lens (54L, 54L).
It is fixed at a position determined by the focal length of R) and the position of the liquid crystal display device (53L, 53R). Further, in order to increase the amount of change in the vergence angle of both eyes, it is necessary to make the size of the liquid crystal display device (53L, 53R) extremely large while maintaining the definition. As described above, the flat panel display device shown in FIG. 11 has a problem in that there is a contradiction between binocular parallax, convergence, and eye focus necessary for natural stereoscopic vision, and a feeling of fatigue is felt. The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to suppress a contradiction between physiological factors of stereoscopic vision, and to electrically rewrite the moving image. It is to provide a three-dimensional display method capable of displaying. Another object of the present invention is to provide a head mounted display device capable of suppressing a contradiction between physiological factors of stereoscopic vision, electrically rewritable, and capable of displaying a moving image. The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0004]

Among the inventions disclosed in the present application, a brief description will be given to the outline of typical ones.
It is as follows. That is, the present invention arranges a plurality of display surfaces having different depth positions for each of the left eye and the right eye of the observer, and makes a plurality of displays for the left eye of the observer.
2D image for the left eye on the surface, and on the right eye of the observer
Displaying a two-dimensional image for the right eye into a plurality of display surfaces against
By presenting a parallax image to each of the left and right eyes, a three-dimensional display method for displaying a three-dimensional stereoscopic image, from the parallax image of the display target object viewed from the left eye of the observer, the left eye of the observer The two-dimensional image displayed on each display surface to generate a plurality of two-dimensional image for the left eye that is made to overlap from the left eye of the observer, on each display surface for the left eye of the observer The brightness of the displayed two-dimensional image is changed independently for each display surface, the two-dimensional image for the left eye is displayed on each display surface for the left eye of the observer, and the display target object From the parallax image viewed from the observer's right eye, for the right eye, the two-dimensional image displayed on each display surface for the observer's right eye is made to overlap when viewed from the observer's right eye. The brightness of the two-dimensional image displayed on each display surface for the right eye of the observer, which generates a plurality of two-dimensional images , It varied each independently for each display surface on the display surface for the right eye of the observer, and displaying the two-dimensional image for the right eye. Further, in the present invention, in the case where the display target object is an object displayed at a depth position close to the observer, the display target object is used for the left eye of the observer.
Before displaying on the display surface of multiple display surfaces close to the viewer
Increase the brightness of the two-dimensional image for the left eye, and
Lower the brightness of the two-dimensional image for the left eye displayed on the display surface,
And the right which the relative viewer's right eye is displayed on the display surface close to the viewer of the plurality of display surfaces to increase the brightness of the two-dimensional image for the right eye, displayed on the far display surface from the observer
When the luminance of the two-dimensional image for the eye is lowered and the display target object is an object displayed at a depth position far from the observer, a plurality of display surfaces for the left eye of the observer are displayed.
2D for the left eye displayed on the display surface close to the observer
Before displaying the image on a display surface that is far from the viewer by reducing the image brightness
The brightness of the two-dimensional image for the left eye is increased and the observer
Two-dimensional for the right eye of lowering the luminance of the two-dimensional image for the right eye to be displayed on the display surface close to the viewer of the plurality of display surfaces for the right eye, displayed on the far display surface from the observer The feature is that the brightness of the image is increased. Further, the present invention is such that overall luminance see the watch <br/>observation's equal to the luminance of the original display object, the display plural for the left eye of the observer
The brightness of the two-dimensional image for the left eye displayed on the screen,
The right eye displayed on a plurality of display surfaces for the observer's right eye
It is characterized in that the brightness of the two-dimensional image for use is changed. Further, the present invention is a two-dimensional image for the left eye on a plurality of display surfaces having different depth positions when viewed from the left eye of the observer, and
Left and right by displaying a two-dimensional image for the right eye on multiple display surfaces with different depth positions when viewed from the observer's right eye.
A head-mounted display device that presents a parallax image to each of the eyes and displays a three-dimensional stereoscopic image, and a plurality of display surfaces for the left eye and the right eye, and relative to the left eye and the right eye of the observer. From the first means for fixing the target position and the parallax image of the display target object viewed from the left eye of the observer, a two-dimensional image displayed on each display surface with respect to the left eye of the observer is displayed by the observer. Second means for generating a plurality of two-dimensional images for the left eye, which are made to overlap with each other when viewed from the left eye, and a parallax image of the display target object viewed from the right eye of the observer, to the right of the observer. Third means for generating a plurality of two-dimensional images for the right eye in which the two-dimensional images displayed on the respective display surfaces for the eyes are overlapped when viewed from the observer's right eye; and the second means. Each of the two-dimensional images for the left eye generated in step (1) is displayed on at least two tables of the plurality of display surfaces for the left eye. And a fifth means for displaying each two-dimensional image for the right eye generated by the third means on at least two display surfaces of the plurality of display surfaces for the right eye. Sixth means for independently changing the brightness of the two-dimensional image for the left eye displayed on the at least two display surfaces for the left eye for each of the at least two display surfaces for the left eye. And 7) changing independently the brightness of the two-dimensional image for the right eye displayed on the at least two display surfaces for the right eye for each of the at least two display surfaces for the right eye.
And means. Further, in the present invention, the fourth means or the fifth means comprises a plurality of two-dimensional display devices and a two-dimensional display arranged at a depth position farthest from an observer among the plurality of two-dimensional display devices. A total reflection mirror or a partial reflection mirror which is combined with a device and arranges the display of the two-dimensional display device as an image on the line of sight of the observer, and other than the two-dimensional display device arranged at the farthest depth position from the observer. It is characterized in that it is combined with a two-dimensional display device and comprises a partial reflecting mirror for arranging the display of each two-dimensional display device as an image on the line of sight of an observer. The present invention also provides the fourth means or the fifth means.
The means is combined with a plurality of two-dimensional display devices and a two-dimensional display device disposed at a depth position farthest from the observer among the plurality of two-dimensional display devices, and the display of the two-dimensional display device is observed by the observer. A combination of a total reflection mirror and a lens, or a combination of a partial reflection mirror and a lens, which is arranged as an image on the line of sight, and a two-dimensional display device other than the two-dimensional display device arranged at a depth position farthest from the observer. And a combination of a partial reflection mirror and a lens for arranging the display of each two-dimensional display device as an image on the line of sight of the observer. Further, in the present invention, the fourth means or the fifth means comprises a plurality of scattering plates arranged at different depth positions as viewed from an observer and capable of switching control between a transmission state and a scattering state, A plurality of projection type two-dimensional display devices for projecting a two-dimensional image on each scattering plate, and a transmission state of the plurality of scattering plates arranged between the plurality of scattering plates and the plurality of projection type two-dimensional display devices. And a plurality of shutters that switch between a transmission state and a blocking state in synchronism with switching between the scattering state and the scattering state.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings for explaining the embodiments, the same reference numerals are given to those having the same function, and the repeated description thereof will be omitted.

[First Embodiment] In the following embodiments,
Although the expression "surface" on which an image is arranged is used, this expression is similar to an image surface often used in optics and the like, and as a means for realizing such an image surface, various optical elements (for example, , Lenses, total reflection mirrors, partial reflection mirrors, curved mirrors, prisms, polarizing elements, wave plates, etc. and two-dimensional display devices (for example, CRTs, liquid crystal displays, LED displays,
It is obvious that this can be realized by many optical combination techniques using a plasma display, an FED display, a DMD display, a projection display, a line drawing display, etc.). Also,
In the following embodiment, the case where the presented three-dimensional object is mainly displayed as a two-dimensional image on two surfaces will be described.
It is clear that the same effect can be expected even if this is made into two or more surfaces. FIG. 1 is a diagram for explaining the principle of a head mounted display device according to a second embodiment of the present invention. In the present embodiment, a plurality of surfaces, for example, the surfaces (1R1, 1R2, and 1R2, are provided on the front surfaces of the right and left eyes of the observer 100.
1L1, 1L2) (for example, the plane (1R1, 1L1) is closer to the observer 100 than the plane (1R2, 1L2)), and in order to display a plurality of two-dimensional images on these planes, for example, two-dimensional The optical system 103 is constructed for each of the right eye and the left eye using the display device and various optical elements (details will be described later in Embodiment 2).

As this two-dimensional display device, for example, C
RTs, liquid crystal displays, LED displays, plasma displays, FED displays, projection displays, line drawing displays, and the like, and optical elements include, for example, lenses, total reflection mirrors, partial reflection mirrors, curved boundaries, prisms, and polarized light. Elements, wave plates, etc. can be used. Here, since the observer 100 fixes the relative positions of the plurality of two-dimensional images displayed on these surfaces (1R1, 1R2, 1L1, 1L2) and the left and right eyes of the observer 100, for example, Then, the fixing jig 110 is mounted.
Next, a parallax image for the left eye and a parallax image for the right eye of the three-dimensional object to be presented to the observer 100 are generated. From this parallax image for the left eye, as shown in FIG. 1, each surface (1L1, 1L
The two-dimensional images (1L5, 1L6) displayed in 2) generate two-dimensional images (1L5, 1L6) that are overlapped with each other when viewed from the left eye of the observer 100. Similarly, from the parallax image for the right eye, the two-dimensional images (1R5, 1R6) displayed on each surface (1R1, 1R2) are overlapped with each other when viewed from the right eye of the observer 100. (1R5, 1R6) is generated. The method of generating the left and right parallax images is, for example, a method of using a two-dimensional image obtained by photographing a three-dimensional object with a camera from the line-of-sight direction of each eye, or combining from a plurality of two-dimensional images photographed from different directions. There are various methods such as a method, a synthesis technique using computer graphics, or a method using modeling.

An important point in the present embodiment is that the apparatus having the above-mentioned configuration is used for two-dimensional images (1R5, 1R6, 1L).
5, 1L6) while keeping the overall brightness of the observer 100 constant (that is, the overall brightness of the observer 100 is equal to the brightness of the three-dimensional object). , Is to change according to the depth position of the three-dimensional object.

An example of the change will be described below. Since both eyes are the same, only the right eye is shown in FIGS. 2 to 5, and since FIGS. 2 to 5 are black-and-white drawings, the one with higher brightness is shown darker for easier understanding. . For example, if a three-dimensional object is a surface (1R1, 1L
1) When displaying at the depth position corresponding to the position above, as shown in FIG. 2, the brightness of the two-dimensional image (1R5, 1L5) of the surface (1R1, 1L1) is made equal to the brightness of the three-dimensional object. , The two-dimensional image (1R6,1L2) on the surface (1R2,1L2)
The luminance of L6) is zero. Next, for example, when the three-dimensional object is a little farther from the observer 100 and the three-dimensional object is displayed at a depth position slightly closer to the surface (1R2, 1L2) than the surface (1R1, 1L1), As shown in FIG. 3, the brightness of the two-dimensional image (1R5, 1L5) is slightly lowered, and the brightness of the two-dimensional image (1R6, 1L6) is slightly increased.
Furthermore, for example, when the three-dimensional object is moved further away from the observer 100 and the three-dimensional object is displayed at a depth position closer to the surface (1R2, 1L2) than the surface (1R1, 1L1), As shown in 4, the two-dimensional image (1
The brightness of R5, 1L5) is further reduced, and the two-dimensional image (1R
6, 1L6) brightness is further increased. Finally, for example, when a three-dimensional object is displayed on the surface (1R2, 1L2) at the corresponding depth position, as shown in FIG.
The luminance of the two-dimensional image (1R6, 1L6) on 2, 1L2) is made equal to the luminance of the three-dimensional object, and the luminance of the two-dimensional image (1R5, 1L5) on the surface (1R1, 1L1) is set to zero.

In the present embodiment, since the two-dimensional images presented to the left and right eyes are left and right parallax images, the observer can see the stereoscopic image just like the conventional head mounted display device because of the factor of the human parallax. Can be perceived. Further, as in the present embodiment, by displaying the left and right parallax images, the surface being displayed is a surface (1R1, 1L1, 1R2, 1L2) due to a physiological factor or a psychological factor of a person. Even if the surface is distant in the depth direction, the focus adjustment of the observer 100 is localized at the position of the three-dimensional object located between the surface (1R1, 1L1) and the surface (1R2, 1L2). That is, for example, when two-dimensional images with almost equal brightness are displayed on the surface (1R1, 1L1) and the surface (1R2, 1L2), the surface (1R1
It seems that there is a three-dimensional object near the middle of the depth position of the plane (1R1, 1L1) and the plane (1R2, 1L2). In the present embodiment, unlike the conventional device shown in FIG. 11, there are at least two surfaces that actually display an image across the illusionary position, so that the binocular parallax that is present in the conventional device,
It is considered that the contradiction between convergence and focus adjustment can be greatly suppressed, and eye strain and the like can be suppressed. Further, unlike the conventional device, there is an advantage that the focus adjustment perfectly matches the illusion position. Further, in the present embodiment, images that are completely overlapped with each other are used for both the left eye and the right eye, and therefore, there is an advantage that the resolution of the presented three-dimensional stereoscopic image can be easily increased.

Further, in the present embodiment, since the devices are individually attached to the left eye and the right eye, it is easy to display parallax images corresponding to the movement of the observer 100 and the movement of the eyes, and the images are completely overlapped. Has the advantage of being easy to maintain. Further, in the present embodiment, since the physiological or psychological factor of the person or the illusion of the person due to only the change of the brightness of the two-dimensional image is used, a coherent light source such as a laser is particularly required as the light source. And has the advantage of being easy to colorize. Further, in the present embodiment, since it does not include a mechanical drive unit, it has advantages that it is suitable for weight reduction, improvement in reliability, and the like. In the present embodiment, only two surfaces among the surfaces on which the two-dimensional image is arranged will be mainly described.
Moreover, the case where the three-dimensional object presented to the observer 100 is between the two surfaces has been described, but the number of surfaces on which the two-dimensional image is arranged is larger than this, or the position of the three-dimensional object presented is different. However, it is obvious that a similar configuration is possible. In the present embodiment, each two-dimensional display device only has a display speed capable of supporting moving images, and it is clear that a moving image can be displayed in the left and right upward directions when viewed from the observer, and in the depth direction as well. It is possible to change the brightness of a plurality of surfaces for each frame, and it is apparent that a moving image can be displayed as in the first embodiment.
Also, if the above-mentioned two-dimensional image is displayed in one frame, it may be displayed simultaneously, at different times, or at the same time for a certain time and separately at other times. However, it is clear that the same effect can be obtained from the principle of the afterimage effect.

[Second Embodiment] An optical system 103 usable in the above-mentioned embodiment will be described below. FIG. 6 is a diagram showing an example of the optical system 103 that can be used in the above embodiment. The optical system shown in FIG. 6 includes a plurality of two-dimensional display devices (201, 202), a total reflection mirror 203 (for example, reflectance / transmittance = 100/0), and a partial reflection mirror 204 (for example, reflectance / transmittance). Rate = 50/50). Here, a plurality of two-dimensional display devices (201, 20
2) includes, for example, a CRT, a liquid crystal display, an LED display, a plasma display, an FED display, a DMD display, a projection type display, a line drawing type display and the like. In the optical system shown in FIG. 6, by changing each arrangement,
A surface 205 formed by a two-dimensional image of the two-dimensional display device 201 being reflected by the total reflection mirror 203 and transmitted through the partial reflection mirror 204;
The surface 206 formed by reflecting the two-dimensional image of the two-dimensional display device 202 on the partial reflection mirror 204 can be arranged at a different position in the depth direction. In the optical system shown in FIG. 6, since only the mirrors (total reflection mirror 203, partial reflection mirror 204) are used,
It has an advantage of little deterioration of image quality.

FIG. 7 is a diagram showing another example of the optical system 103 that can be used in the above embodiment. The optical system shown in FIG. 7 is such that the position of the surface can be changed more flexibly by including convex lenses (207, 208) in the optical system shown in FIG. In the optical system shown in FIG. 7, a plurality of two-dimensional display devices (201, 202), a total reflection mirror 203 (for example, reflectance / transmittance = 100/0),
Partial reflector 204 (eg, reflectance / transmittance = 50/5
By changing the image position by adding, for example, convex lenses (207, 208) to the configuration of 0), the positional relationship between the surface 205 and the surface 206, which is limited due to the size restriction of the device, is set more flexibly. be able to. Of course, the use of a lens optical system that uses not only a convex lens but also a combination lens may be advantageous in terms of distortion, as in the case of a normal lens optical system. Further, in this case, the case where the virtual image is used is shown as an example, but it is obvious that the same can be done when the real image is used.

FIG. 8 is a diagram showing another example of the optical system 103 that can be used in the above embodiment. The optical system shown in FIG. 8 is obtained by adding a two-dimensional display device to the optical system shown in FIG. That is, a plurality of two-dimensional display devices (21
1, 212, 213, 214, 215) and, for example, a total reflection mirror 216 (for example, reflectance / transmittance = 100 /
0), the partial reflecting mirror 217 (for example, reflectance / transmittance = 5
0/50), 218 (eg reflectance / transmittance = 33.
3 / 66.7), 219 (eg reflectance / transmittance = 2
5/75), 220 (for example, reflectance / transmittance = 20 /
80) is used to construct an optical system. In the optical system shown in FIG. 8, the two-dimensional image of the two-dimensional display device 211 is reflected by the total reflection mirror 216 and transmitted through the partial reflection mirrors (217 to 220) by changing the respective arrangements. Surfaces (222 to 225) formed by the two-dimensional images of the two-dimensional display devices (212 to 215) being reflected by the partial reflecting mirrors (217 to 220) and further transmitted through the partial reflecting mirrors.
Can be arranged at different positions in the depth direction. Since only the mirror is used in the optical system shown in FIG. 8,
It has an advantage of little deterioration of image quality. In addition, in FIG. 8, the case where the number of the two-dimensional display devices is five is described, but it is clear that the same configuration can be made with the number other than that. Also in this case, it is similarly clear that the position of the surface can be easily controlled by adding the lens optical system as shown in FIG.

FIG. 9 is a diagram showing another example of the optical system 103 that can be used in the above embodiment. The optical system shown in FIG. 9 includes a plurality of projector-type two-dimensional display devices (231, 2).
32, 233, 234, 235) and the shutter (24
1,242,243,244,245) and the scattering plate (2
36, 237, 238, 239, 240),
From each projector type two-dimensional display device (231 to 235) through a shutter (241 to 245), a scattering plate (236
To 240), a two-dimensional image is projected to form an optical system for arranging a plurality of binary images. Here, each projector type two-dimensional display device (231 to 23
5) is, for example, CTR type, LCD type, ILV type, DM
It is composed of D type and the like. Also, scattering plates (236 to 240)
Can control the scattering state / transmission state, the reflection state / transmission state, such as a polymer dispersion type liquid crystal element, a holographic polymer dispersion type liquid crystal element, a combination element of liquid crystal and a multi-lens array, and Shutter (241-2
In 45), it is assumed that the transmission state / blocking state can be controlled like a twisted nematic liquid crystal element, a ferroelectric liquid crystal element, or a mechanical shutter element. The scattering plates (236 to 240) are arranged at different depth positions, and the focusing surfaces of the projector type two-dimensional display devices (231 to 235) are aligned with these scattering plates (236 to 240) to form a two-dimensional image. And a scattering plate (236-24
0) in the scattering state / transmission state and the shutters (241 to 245) in the transmission state / blocking state are driven at the same time, so that the scattering plate (2) is time-divided.
36-240), the depth position of the surface formed above can be controlled. When a projector type two-dimensional display device (231 to 235) is used like the optical system shown in FIG. 9,
This has the advantage that the degree of freedom in the layout of the device is great. In the optical system shown in FIG. 9, the case where the number of projector type two-dimensional display devices is five has been described, but it is obvious that the same configuration can be made with other numbers. Also,
Instead of the shutters (241 to 245), the lamp of the projector type two-dimensional display device (231 to 235) is turned on / off.
Obviously, it may be turned off.

In the above-described embodiment, the case where there are surfaces near the head mounted display device, inside or deeper than the head mounted display device has been mainly described. However, by adding an optical device to these surfaces, a two-dimensional display device can be obtained. leave,
Alternatively, it can be easily arranged on the front surface. An example thereof is shown in FIG. For example, by disposing the lens optical system 303, for example, on the front surface of the optical system 301 shown in the above-described embodiment, the inner surface 302 can be changed to the outer surface 304.
Obviously, it can be converted to the position. In such a case, since the three-dimensional stereoscopic image floats in space and is reproduced,
Compared with the case where a three-dimensional stereoscopic image is inside or behind the device, it has the advantage that it is easier for a person to perceive it in three dimensions. Although the invention made by the present inventor has been specifically described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Of course,

[0017]

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows. According to the present invention, it is possible to suppress a contradiction between physiological factors of stereoscopic vision, reduce the amount of information, and reproduce an electrically rewritable three-dimensional moving image.

[Brief description of drawings]

FIG. 1 is a diagram for explaining the principle of a head mounted display device according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a method of displaying a three-dimensional stereoscopic image in the head mounted display device according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a method of displaying a three-dimensional stereoscopic image in the head mounted display device according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining a method of displaying a three-dimensional stereoscopic image in the head mounted display device according to the first embodiment of the present invention.

FIG. 5 is a diagram for explaining a method for displaying a three-dimensional stereoscopic image in the head mounted display device according to the first embodiment of the present invention.

FIG. 6 is a diagram showing an example of an optical system usable in the first embodiment of the present invention.

FIG. 7 is a diagram showing another example of the optical system that can be used in the first embodiment of the present invention.

FIG. 8 is a diagram showing another example of the optical system that can be used in the first embodiment of the present invention.

FIG. 9 is a diagram showing another example of the optical system that can be used in the first embodiment of the present invention.

FIG. 10 is a diagram showing another example of the optical system that can be used in the first embodiment of the present invention.

FIG. 11 is a diagram showing a conventional head-mounted display device that performs stereoscopic display of an electrically rewritable moving image.

[Explanation of symbols]

52L, 52R ... Camera, 53L, 53R ... Liquid crystal display device, 54L, 54R, 207, 208 ... Convex lens, 55
L, 55R ... Left and right eyes, 100 ... Observer, 103, 30
1 ... Optical system, 110 ... Fixing jig, 205, 206, 22
1-225, 302, 304, 1R1, 1R2, 1L
1, 1L2 ... Surface, 201, 202, 211-215 ... Two-dimensional display device, 203, 216 ... Total reflection mirror, 204, 2
17-220 ... Partial reflecting mirror, 231-235 ... Projector type two-dimensional display device, 236-240 ... Scattering plate, 24
1-245 ... Shutter, 303 ... Lens optical system, 501
... three-dimensional object, 506 ... parallax image, 1R5, 1R6, 1L
5, 1L6 ... Two-dimensional image.

Continuation of front page (56) Reference JP-A-9-331552 (JP, A) Patent 3224695 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 13/00 G02B 27 / 00

Claims (10)

(57) [Claims] 1. A pair of left and right eyes of an observer.
And arrange multiple display surfaces with different depth positions,
Observer's left eye2D images for the left eye on multiple display surfaces against
, And a plurality of display surfaces for the right eye of the observer
For the right eyeTwo-dimensional imageLeft and right eyes can be displayed by displaying
Present the parallax image to it,3D table displaying 3D image
A method of From the parallax image of the display target object seen from the left eye of the observer,
Two-dimensional displayed on each display surface for the left eye of the observer
Left eye whose images are made to overlap when viewed from the observer's left eye
Generate multiple 2D images for Two-dimensional displayed on each display surface for the left eye of the observer
By changing the brightness of the image independently for each display surface,
Two-dimensional image for the left eye on each display surface for the left eye of the observer
Is displayed, Also, the parallax image of the display target object viewed from the right eye of the observer.
From, it is displayed on each display surface for the right eye of the observer
The two-dimensional images are made to overlap when viewed from the observer's right eye.
Generate multiple 2D images for the right eye, Two-dimensional displayed on each display surface for the right eye of the observer
By changing the brightness of the image independently for each display surface,
Two-dimensional for the right eye on each display surface for the observer's right eye
A three-dimensional display method characterized by displaying an image. 2. When the display target object is an object displayed at a depth position close to the observer, the left side of the observer is displayed.
Of the multiple display surfaces for the eye, the display surface close to the viewer
Increase the brightness of the two-dimensional image for the left eye to be displayed, and observer
Brightness of the two-dimensional image for the left eye displayed on the display surface far from
And lowering the brightness of the right-eye two-dimensional image displayed on the display surface closer to the viewer out of the plurality of display surfaces for the right eye of the viewer, The brightness of the two-dimensional image for the right eye displayed on the far display surface is lowered, and when the display target object is an object displayed at a depth position far from the observer, the left eye of the observer. Against
Display on one of the multiple display surfaces that is closest to the viewer.
Lower the brightness of the two-dimensional image for the left eye,
The brightness of the two-dimensional image for the left eye displayed on the
And, lowering the brightness of the two-dimensional image for the right eye to be displayed on the display surface close to the observer among the plurality of display surfaces for the observer's right eye, and displaying on the display surface far from the observer. The three-dimensional display method according to claim 1, wherein the brightness of the two-dimensional image for the right eye is increased. As overall brightness scoping wherein observation person is equal to the luminance of the original display object, the left eye of the observer
The two-dimensional image for the left eye displayed on a plurality of display surfaces
And the brightness on the display surface for the right eye of the observer.
The three-dimensional display method according to claim 1, wherein the brightness of the two-dimensional image for the right eye shown is changed. 4. A two-dimensional image for the left eye on a plurality of display surfaces having different depth positions when viewed from the left eye of the observer, and
Left and right by displaying a two-dimensional image for the right eye on multiple display surfaces with different depth positions when viewed from the observer's right eye.
Presenting a parallax image to each of the eyes, a head-mounted display device for displaying a three-dimensional stereoscopic image, a plurality of display surfaces for the left eye and the right eye, relative to the left eye and the right eye of the observer First means for fixing the target position, and a parallax image of the display target object viewed from the left eye of the observer,
Second means for generating a plurality of two-dimensional images for the left eye in which the two-dimensional images displayed on the respective display surfaces for the left eye of the observer are overlapped when viewed from the left eye of the observer; From the parallax image of the display target object seen from the right eye of the observer,
Third means for generating a plurality of two-dimensional images for the right eye, in which the two-dimensional images displayed on each display surface for the observer's right eye are overlapped when viewed from the observer's right eye, Fourth means for displaying each two-dimensional image for the left eye generated by the second means on at least two display surfaces of the plurality of display surfaces for the left eye, and generated by the third means Fifth means for displaying the respective two-dimensional images for the right eye on at least two display surfaces of the plurality of display surfaces for the right eye, and displayed on the at least two display surfaces for the left eye The above
The brightness of the two-dimensional image for the left eye is at least 2 for the left eye.
One of the sixth means for varying each independently for each display surface, the displayed at least two display surfaces for the right eye
The brightness of the two-dimensional image for the right eye is at least 2 for the right eye.
And a seventh means for independently changing each of the two display surfaces. 5. The fourth means or the fifth means comprises a plurality of two-dimensional display devices, and a two-dimensional display device arranged at a depth position farthest from an observer among the plurality of two-dimensional display devices. Combined with
A total reflection mirror or a partial reflection mirror that arranges the display of the two-dimensional display device as an image on the line of sight of an observer, and a two-dimensional display device other than the two-dimensional display device that is arranged at the farthest position from the observer. The head mounted display device according to claim 4, wherein the head mounted display device is composed of a partial reflection mirror which is combined with each other and arranges the display of each two-dimensional display device as an image on the line of sight of an observer. 6. The fourth means or the fifth means comprises a plurality of two-dimensional display devices, and a two-dimensional display device arranged at a depth position farthest from an observer among the plurality of two-dimensional display devices. Combined with
A combination of a total reflection mirror and a lens or a combination of a partial reflection mirror and a lens for arranging the display of the two-dimensional display device as an image on the line of sight of an observer, or a combination of a partial reflection mirror and a lens, is arranged at a depth position farthest from the observer. A combination of a two-dimensional display device other than the two-dimensional display device and a combination of a partial reflecting mirror and a lens for arranging the display of each two-dimensional display device as an image on the line of sight of the observer. The head mounted display device according to claim 4. 7. The fourth means or the fifth means comprises a plurality of scattering plates arranged at different depth positions from an observer and capable of switching control between a transmission state and a scattering state. A plurality of projection type two-dimensional display device for projecting a two-dimensional image on a scattering plate, arranged between the plurality of scattering plates and the plurality of projection type two-dimensional display device, the transmission state of the plurality of scattering plates and 5. A plurality of shutters that switch between a transmission state and a blocking state in synchronism with the switching to the scattering state.
The head-mounted display device according to. 8. The head mounted display device according to claim 4, further comprising a lens optical system provided between the plurality of display surfaces and an observer. 9. The sixth means is the display target object.
Is an object displayed at a depth position close to the observer.
In this case, one of the at least two display surfaces that is closer to the observer
The brightness of the two-dimensional image for the left eye displayed on the
The secondary for the left eye displayed on the display surface far from the observer.
The brightness of the original image is lowered, and the display target object is observed.
When the object is displayed at a depth position far from the person,
Display of the at least two display surfaces close to the observer
Reduce the brightness of the two-dimensional image for the left eye displayed on the screen
Of the two-dimensional image for the left eye displayed on the display surface far from the observer
When the display target object is an object displayed at a depth position close to the observer, the seventh means increases the brightness, and displays the display target object close to the observer among the at least two display surfaces. The brightness of the two-dimensional image for the right eye to be displayed is increased, and the brightness of the two-dimensional image for the right eye to be displayed on the display surface far from the observer is lowered, and the display target object is from the observer. If the object is displayed at a distant depth position, the at least 2
It said to be displayed on the display surface close to the viewer of the One of the display surface
9. The brightness of the two-dimensional image for the right eye is lowered, and the brightness of the two-dimensional image for the right eye displayed on the display surface far from the observer is increased. The head mounted display device according to item 1. 10. The sixth means is the whole body viewed by an observer.
The brightness of the target is equal to the brightness of the original display target object
The left eye displayed on the at least two display surfaces
Changing the brightness of the two-dimensional image for display, and the seventh means displays on the at least two display surfaces so that the overall brightness viewed by the observer becomes equal to the brightness of the original display target object. 10. The brightness of the two-dimensional image for the right eye is changed, and the brightness is changed.
The head mounted display device according to claim 1.