JP3298082B2 - Head mount 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 head mount display device, and more particularly to a head mount display device for performing three-dimensional display of moving images.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional head-mounted display device for displaying an electrically rewritable moving image in three dimensions is preferably a flat display device such as a liquid crystal display (LCD) and a convex lens. Are known.

In FIG. 1, images of a three-dimensional object a1 viewed from different directions (this is called a parallax image) are, for example, a camera a.
Images are taken with 2L and a2R. This camera a2L, a
Images from the 2R are displayed on the left and right LCDs a3L and a3R via electronic circuits (not shown). The observer observes different display images on the left and right LCDs a3L and a3R through separate convex lenses a4L and a4R, respectively, with the left and right eyes a5L and a5R. Thereby, the observer can observe the parallax image a6 with both eyes at the same time, and the stereoscopic viewing by the binocular parallax becomes possible.

[0004]

However, the head-mounted display device configured as described above can present binocular parallax in a certain range in the depth direction, but is required for natural stereoscopic vision. Vergence of both eyes,
It is difficult to make the focal length adjusting action of the eye and the binocular disparity consistent. That is, the focal point of the eye is the focal length of the convex lenses a4L and a4R and the LCDs a3L and a3L.
This is because it is fixed at a position determined by the position of R. In addition, because the size of the LCDs a3L and a3R is limited, the amount of change in the convergence angle of both eyes cannot be increased.

[0005] Therefore, since inconsistency arises between the binocular parallax, the convergence, and the action of adjusting the focal length of the eye necessary for natural stereoscopic vision, the viewer feels a feeling of fatigue. I could not escape.

The present invention has been made in view of the above circumstances, and has as its object the purpose of all of binocular parallax, binocular convergence, and focal length adjustment of the eyes, which are main factors for perceiving a stereoscopic effect. And an electrically rewritable head-mounted display device.

[0007] The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0008]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

That is, in the head mounted display device according to the present invention, an eye movement measuring device for measuring eye movement, a flat display device, and the flat display device are two-dimensionally moved for each of the two eyes. A gazing point calculating device that includes a moving device, a lens, and calculates the positions of gazing points of both eyes from eye movements detected by the eye movement measuring device; and the plane display from a calculated value of the gazing point calculating device. A control device for controlling the position of the device via the moving device, wherein the moving device includes a motor, an electrostatic type moving device.
At least one of a moving device and an electromagnetic moving device
It is characterized by having .

[0010]

The head-mounted display device configured as described above changes the two-dimensional position of the flat panel display device based on the three-dimensional position of the gazing point of both eyes, thereby making it possible to follow the gazing point. Display can be performed.

From this, a three-dimensional image which does not cause inconsistency in the binocular parallax, binocular convergence, and the focal length adjusting action of the eyes, which are the main elements for perceiving a stereoscopic effect, is reproduced in an electrically rewritable form. Will be able to do it.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the head mount display device according to the present invention will be described below. Here, in each embodiment described below, for convenience of explanation, only the direction in which the observer easily feels a three-dimensional effect, that is, the explanation is limited to a plane including both eyes of the observer, but in other planes. It will be clear that this is also the case.

Embodiment 1 FIG . 1 and 2 are schematic structural views showing one embodiment of a head mount display device according to the present invention. FIG. 1 is a perspective view, and FIG. 2 is an explanatory view in a plane including both eyes of an observer.

First, in FIG. 1, eye movement measuring devices 1a1R and 1a1L for measuring eye movement, flat display devices 1a2R and 1a2L, and these flat display devices 1a2
Moving device 1a4 for moving R, 1a2L two-dimensionally
R, 1a4L, lenses 1a3R, 1a3L, and a gazing point calculation device 1a8 that calculates the three-dimensional position of a gazing point 1a6 of a person from the movement of both eyes obtained from the eye movement measuring devices 1a1R, 1a1L.

The devices 1a7R and 1a7L are respectively attached to the left and right eyes of a person, and the two-dimensional positions of the flat display devices 1a2R and 1a2L and their display contents are changed according to the three-dimensional position of the gazing point 1a6 of the person. By doing so, volume scanning type three-dimensional display by following a gazing point can be realized.
Here, the eye movement measuring devices 1a1R and 1a1L are composed of, for example, a light source (for example, a semiconductor laser, an LED, or a lamp) and an optical disk (for example, a photodiode).
Alternatively, it is composed of a combination with a camera. The flat display devices 1a2R and 1a2L are, for example, a combination of a light source (for example, a semiconductor laser, an LED, a lamp, etc.) and a light transmittance control device (for example, a liquid crystal display device), or a scattering plate (for example, a ground glass plate, fine Lens plate, polymer plate with rough surface, etc.)
Alternatively, it is composed of a light-emitting display device (for example, an LED display device, a plasma display device, or a fluorescent tube display device). In addition, the mobile devices 1a4R and 1a4L
For example, it is composed of a screw (for example, a ball screw or the like) and a driving device (for example, a motor, an electrostatic moving device, or an electromagnetic moving device). Further, the lens 1a3
R and 1a3L are each composed of a single lens or a combination lens including a convex lens, a concave lens, or an aspherical lens. The gazing point calculation device 1a8 is a device including, for example, a computer.

The head-mounted display device constructed as described above can change the two-dimensional positions of the flat display devices 1a2R and 1a2L and their display contents in accordance with the three-dimensional position of the human gazing point 1a6. I have. That is, for example, when the gazing point 1a6 of the person is at the position shown in the drawing, the flat display device 1a2R is moved to a two-dimensional position (determined by the focal length of the lenses 1a3R and 1a3L) by the moving devices 1a4R and 1a4L. , 1
a2L is moved, and an image corresponding to the position is displayed.

As a result, it is possible to always display the vicinity of the gazing point of the person, and it is possible to eliminate the inconsistency between the focus adjustment effect of the eye and the binocular parallax and the convergence of both eyes, which are caused by the configuration shown in FIG. become. Therefore,
It becomes possible to substantially satisfy the focus adjustment effect of the eyes, the binocular parallax, and the convergence of the both eyes, which are the main factors for obtaining a stereoscopic effect, and natural stereoscopic vision can be realized.

Here, in order to eliminate the inconsistency between the focus adjustment effect of the eye and the binocular parallax or the vergence of the both eyes, there is a case in which one-dimensional movement can be minimized.
In order to cope with a large left-right movement of the eye or a wide field of view, the movement must be two-dimensional. Therefore, even in the two-dimensional movement, the movement in one direction can be set small. In FIG. 1, the flat display device 1a2
The moving directions of R and 1a2L are set to, for example, the directions of both eyes and the direction perpendicular thereto. For example, as shown in FIG. 3, the gaze direction of the moving directions of the flat display devices 1b2R and 1b2L is made oblique. Thus, an effect that the correspondence between the convergence angle and the focus adjustment of the eye can be easily obtained is obtained.

For this reason, the flat display devices 1a2R, 1a2
The moving direction of L may be set to any direction according to the purpose.

Further, in order to secure as large a moving range of each of the flat display devices 1c2R and 1c2L as possible, for example, as shown in FIG.
It goes without saying that L may be arranged alternately on the left and right sides. Further, it is apparent that there are many other methods for separating the right and left by using a mirror, a prism, and the like.

Embodiment 2 FIG . FIG. 5 is a schematic configuration diagram showing another embodiment of the head mount display device according to the present invention.

In FIG. 1, a plurality of flat display devices are provided, and each flat display device has a near point 2
a2RN, 2a2LN, gazing point 2a2R, 2a2L,
It is arranged as a far point 2a2RF, 2a2LF.
That is, the flat display devices for fixation 2a2R and 2a2L are arranged at positions corresponding to the fixation points 2a6 obtained by the eye movement measuring devices 2a1R and 2a1L and the fixation point calculation device 2a8, and display of an image at a depth near the fixation point is performed. Done, also
The near point 2a2RN and 2a2LN are arranged on the near point side to display the near point image, and the far point 2a2RF and 2a2LF are arranged on the far point side to display the far point image. It is supposed to do.

In this manner, the near point 2a2RN, 2a
By arranging the planar display devices of 2LN or 2a2RF for far point and 2a2LF for each point, it is possible to obtain an effect that an image blur at a depth other than the point of gaze can be expressed.

Further, as shown in FIG. 6, a dedicated flat display device 2b2RM or 2b2LM may be fixedly provided for displaying a background image. In this case, the flat display devices 2b2RM and 2b2LM are arranged farthest from both eyes.

The flat display devices 2b2RM, 2b
By making both ends of the 2LM curved in the direction of both eyes, the 2LM is configured to cover both eyes, and an effect that a sufficient realism with respect to the background image can be obtained is obtained.

Embodiment 3 FIG . FIG. 7 is a schematic configuration diagram showing another embodiment of the head mount display device according to the present invention.

As shown in FIG. 1, the flat display device includes, for example, an optical scanning device that scans light rays or display projection devices 3a1R and 3a1L that project a flat display image, and a scattering plate 3a.
2R, 3a2L. With this configuration, it is possible to move only the scattering plates 3a2R and 3a2L while keeping the display projection devices 3a1R and 3a1L fixed. Scattering plate 3a
In the movement of only 2R and 3a2L, the mechanism can be made a simple structure, so that there is an effect that the weight of the device can be reduced.

Further, even when a plurality of flat panel display devices are used as described in the second embodiment, the scattering plates 3a2R, 3a
There is an effect that it is only necessary to set a plurality of 2Ls correspondingly. In this case, it is needless to say that the scattering plates 3a2R and 3a2L need to be formed of, for example, a polymer dispersion type liquid crystal plate or the like in which transmission and scattering can be electrically switched.

Here, in FIG. 7, the scattering plate 3a is applied to both eyes.
Although the light is scanned or projected from the opposite side of 2R, 3a2L, the light may be scanned or projected from both eyes as shown in FIG. 8, for example. In the case of such a configuration, the scattering plates 3b2R, 3b
Providing, for example, a reflection plate that can electrically switch between reflection and transmission on the back surface of the b2L is effective in increasing light use efficiency.

According to the head mount display device shown in each of the above embodiments, the two-dimensional position of the flat panel display device is changed based on the three-dimensional position of the gazing point of both eyes, whereby the gazing point follows. Volume type three-dimensional display can be performed.

From this, a three-dimensional image that does not cause inconsistency in the binocular parallax, the binocular convergence, and the focal length adjusting function of the eyes, which are the main elements for feeling a stereoscopic effect, is reproduced in an electrically rewritable form. Will be able to do it.

[0032]

As is apparent from the above description,
ADVANTAGE OF THE INVENTION According to the head mount display apparatus by this invention, all of the binocular parallax, the convergence of both eyes, and the focal length adjustment effect of an eye which are main factors which perceive a three-dimensional effect can be satisfy | filled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a head mount display device according to the present invention.

FIG. 2 is a plan view showing one embodiment of a head mount display device according to the present invention.

FIG. 3 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 4 is a perspective view showing another embodiment of the head mount display device according to the present invention.

FIG. 5 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 6 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 7 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 8 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 9 is a perspective view showing an example of a conventional head mount display device.

[Explanation of symbols]

1a1: Eye movement measuring device, 1a2: Flat display device, 1
a3: lens, 1a4: moving device, 1a5: eye, 1a6
... Point of gaze, 1a8 ... Point of gaze calculation device.

Continuation of the front page (56) References JP-A-62-115989 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02B 27/22 G02B 27/02

Claims (4)

(57) [Claims] An eye movement measuring device for measuring the movement of the eyes for each of the two eyes, a flat display device, a moving device for moving the flat display device two-dimensionally, and a lens, A fixation point calculation device that calculates the position of the fixation point of both eyes from the movement of the eye detected by the eye movement measurement device, and the position of the flat display device from the calculated value of the fixation point calculation device via the moving device. and a control unit for controlling Te, the mobile device includes a motor, an electrostatic type mobile device, the mobile electromagnetic
A head-mounted display device comprising at least one of the devices. 2. The apparatus according to claim 1, wherein a plurality of the surface display devices are provided for each of the two eyes, and each of the surface display devices is for a gazing point.
The head-mounted display device according to claim 1 , further comprising at least one of a near point and a far point . 3. A surface display device for a plurality of eyes, wherein a plurality of the surface display devices are provided, each of the surface display devices being at least one of a near point and a far point, and a surface display device for a gazing point. head-mounted display apparatus of claim 1 Symbol mounting characterized in that it comprises a control device for controlling the distance between the. 4. The flat display device according to claim 1, wherein the flat display device comprises a combination of an optical scanning device for scanning a light beam or a display projection device for projecting a flat display image and a scattering plate. The head-mounted display device according to any one of the above.