JP2584144Y2 - Head mounted stereoscopic image display - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a head-mounted device for performing advanced remote control and simulation operations on artificially created stereoscopic images such as CG (computer graphics) and television images. The present invention relates to a stereoscopic image display device.

[0002]

2. Description of the Related Art As is well known, a head-mounted stereoscopic image display device (Head Mount) as shown in FIG.
edDisplay (HMD) has become mainstream. In this figure, a head-mounted stereoscopic image display device 1 includes a display device 2 and a helmet 3. Display device 2
Is provided on the helmet 3 and has a C
G or a television image is displayed. In such a configuration, the head-mounted stereoscopic image display device 1 is mounted on a human head (hereinafter, a person wearing the head-mounted stereoscopic image display device is referred to as a “wearer”), The wearer uses the display device 2
Move freely while watching the CG or television image displayed inside the, and perform other work (such as remote control) using both hands.

FIG. 5 shows an optical system of the head mounted stereoscopic image display device 1 described above. A CG image is displayed on the display element 5, and an image 6 of the display element 5 reaches the eye 8 through the lens 7. At this time, the wearer looks at the image 6 enlarged by the lens 7. In the wearer, an image was formed at a distance of human clear vision (usually around 30 cm),
Since the virtual image 9 of the display element 5 is viewed, the display element 5
Is recognized as a natural image. Further, the optical system 4
Are provided separately for both eyes, the wearer can convert this image into a natural stereoscopic image (in this case, a stereo image).
Recognize as At this time, the wearer feels the illusion that exists in the stereoscopic image extending in front of the eyes. In such a head-mounted stereoscopic image display device, by inputting positional information of the user's own hands and feet into the head-mounted stereoscopic image display device, the wearer can actually work in the stereoscopic image. And behaving as if to act.

[0004]

The head mounted stereoscopic image display device described above has a problem that the wearer cannot completely see the surrounding scenery because the wearer is completely isolated from the surrounding environment. occured. For example, in the robot teaching (teaching) or simulation work, the wearer may need to see the surrounding scenery and the image of the display element at any time. However, since the wearer can only see the image of the display element, when viewing the surrounding scenery, the head-mounted stereoscopic image display device must be removed from the head each time, and the surroundings can be easily seen. You cannot see the scenery and you cannot work safely.

[0005] The present invention has been made in view of the above-mentioned circumstances, and the invention according to claim 1 provides a head-mounted type stereoscopic image display device capable of easily seeing the surrounding scenery. The purpose is. Another object of the present invention is to provide a head-mounted stereoscopic image display device capable of performing more realistic recognition and remote control in addition to the above-described objects.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a display element, at least one objective lens facing the display element, and a light passing through the objective lens are provided. An optical system composed of at least one eyepiece lens for causing the image to enter the eye, an image of a surrounding landscape in which the optical axis to the eye is straight, and an image of the display element emitted from the objective lens Switching means for selectively switching either one of them and making the light incident on the eye, wherein a part of the optical axis of the image of the display element coincides with a part of the optical axis of the image of the surrounding scenery. It is characterized by. In the invention according to claim 2, the switching unit is configured to switch between one of the image of the surrounding scenery and the image of the display element and the image of the surrounding scenery and the image of the display element. Switching means for selectively switching between an image obtained by combining the two and an image divided into a part of the surrounding scenery image and a part of the image of the display element so as to be incident on an eye. It is characterized by being.

[0007]

According to the first aspect of the present invention, an image of the display element passing through the objective lens or an image of a surrounding landscape in which the optical axis to the eye is straight is selectively switched by the switching means. Switch and let it enter the eye. According to the invention of claim 2, the image of the display element described above, the image of the surrounding scenery described above, an image obtained by combining the image of the surrounding scenery and the image of the display element, Either a part of the image of the surrounding scenery or an image divided into a part of the image of the display element is selectively switched by the switching means, and is made to enter the eye.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. However, in the drawings shown below, portions corresponding to those in FIGS. 4 and 5 described above are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is a perspective view of a head-mounted stereoscopic image display device showing a configuration of a first embodiment of the present invention. In this figure, a head-mounted stereoscopic image display device 10 includes a display device 11 and a helmet 3. Display device 1
1 is provided with entrances 12 and 12, and the display element 5 described above and an optical system described later are provided inside. The optical system includes an image 6 of the display element 5 and images 13 and 1 of the surrounding scenery passing through the entrances 12 and 12 described above.
3 is incident.

FIG. 2A is a conceptual diagram showing the configuration of an optical system according to a first embodiment of the present invention when viewing an image 6 emitted from the display element 5. FIG. In this figure, an image 6 displayed on a display element 5 is emitted to a mirror 15. The mirror 15 is provided at an angle of 45 degrees with respect to the optical axis of the image 6, and reflects the image 6 to the objective lens 16. Next, the objective lens 16 enlarges the incident image 6 and emits it to the switching mirror 18. The switching mirror 18 is provided at an angle of 45 degrees with respect to the incident optical axis of the image 6, and reflects the image 6 to the eyepiece 19. The eyepiece 19 enlarges the image 6 formed near the illustrated image space focal point 17 of the objective lens 16 and emits it to the eye 8.

In the configuration described above, the image 6 displayed on the display element 5 is inverted by the mirror 15, but is again inverted by the switching mirror 18, so that it returns to a normal image. If the image 6 is inverted in the display element 5 in advance, the mirror 15 may be omitted, and in this case, the number of components can be reduced.

FIG. 2B shows the optical system described above.
FIG. 3 is a conceptual diagram showing a configuration in a case where an actual scene incident from an entrance 12 is viewed. In this figure, the reverse focus lens 20
Has a focus on the opposite side to the eyepiece 19, and has a positive focus.
Negative focal length for eyepiece 19 with point distance
I do . The reverse focus lens 20 is provided such that the incident optical axis of the image 13 of the scene of the entrance 12 coincides with the above-mentioned incident optical axis of the image 6 from the point x to the eye 8. Therefore, the eye usually has a magnification that is smaller than the magnification seen by the naked eye.
The scenery image of the rate enters. When viewing the image 13 of the actual scene, the switching mirror 18 blocks the image 6 of the display element 5 as shown in FIG. I can jump up.

In FIG. 2A, the reverse focus lens 20 is not shown, but the image 13 of the surrounding scenery is blocked by the switching mirror 18 and does not reach the eye 8, so that the reverse focus lens 20 is It may be installed in advance.

Next, a case where the image 6 of the display element 5 is viewed will be described with reference to FIG. The switching mirror 18 is arranged at 45 degrees with respect to the incident optical axis of the image 6 emitted from the objective lens 16 as shown in the figure. In this case, the image 6 of the display element 5 is reflected by the mirror 15 and enters the objective lens 16. Then, the image 6 enlarged by the objective lens 16 is reflected by the switching mirror 18, and
The light enters the eyepiece 19. The image 6 is again magnified by the eyepiece 19 and then enters the wearer's eyes. The wearer looks at the image 6 formed near the image space focal point 17. At this time, the landscape image 13 does not reach the eyes 8 because it is blocked by the switching mirror 18.

Next, with reference to FIG. 2B described above, a case where the surrounding scene 13 is viewed will be described. First,
The switching mirror 18 is flipped up as shown. In this case, the surrounding scenery image 13 enters the eyepiece 19 via the reverse focus lens 20 and further enters the eye 8. In this case, the surrounding scenery image 13 is
Since it passes through the eyepiece 19 with 0, the wearer sees the surrounding scenery image 13 at a magnification smaller than the magnification seen by the naked eye. At this time, the image 6 of the display element 5 does not reach the eyes 8 because the image 6 is blocked by the switching mirror 18. As described above, in the first embodiment, one of the image 6 of the display element 5 and the image 13 of the surrounding scenery can be selected.

FIG. 3 is a conceptual diagram showing the configuration of an optical system according to a second embodiment. 2A and 2B described above.
The same reference numerals are given to the portions corresponding to and the description thereof will be omitted. In this figure, a half mirror 22 is provided instead of the switching mirror 18 and a reverse focus lens 20 is provided.
A shutter 23 is provided in front of.

Next, in the configuration of the optical system 21 shown in FIG. 3, when the image 6 of the display element 5 is viewed, when the image 13 of the surrounding landscape is viewed, the image 13 of the surrounding landscape and the image of the display element 5 are displayed. 6 and a case where an image divided into a part of the surrounding scenery image 13 and a part of the image 6 of the display element 5 is viewed.

First, the case where the image 6 of the display element 5 is viewed will be described. In this case, the shutter 23 is closed and the half mirror 22 is arranged at 45 degrees with respect to the optical axis of the image 6 emitted from the objective lens 16 so that the surrounding scenery image 13 does not reach the eyes 8. With such a configuration, the wearer can use the image 6 of the display element 5 as in the case of FIG.
Can be seen.

Next, a case where the image 13 of the surrounding landscape is viewed will be described. In this case, the shutter 23 is opened, and the half mirror 22 is flipped up so that the image 6 of the display element 5 does not reach the eye 8. With such a configuration, the wearer looks at the naked eye similarly to the case of FIG.
The image 13 of the surrounding scenery can be seen at a magnification smaller than the magnification .

Next, a case will be described in which an image in which both the image 13 of the surrounding scenery and the image 6 of the display element 5 are superimposed is viewed. In this case, the half mirror 2 is opened so that the shutter 23 is opened and the image 6 of the display element 5 enters the eye 8.
2 with respect to the optical axis of the image 6 emitted from the objective lens 16
Place at 5 degrees. In this case, from the point x to the eye 8,
Since the optical axis of the image 13 of the surrounding scene coincides with the optical axis of the image 6 of the display element 5, the image 13 of the surrounding scene reaches the eye 8 through the half mirror 22, and the display element 5 Is reflected by the half mirror 22 and reaches the eye 8. At this time,
The wearer can see an image in which both the image 13 of the surrounding scenery and the image 6 of the display element 5 are combined.

In practical use, for example, a landscape image of the land (the surrounding landscape image 13) and a building image formed by a CG stereoscopic image (the image 6 of the display element 5) are synthesized.
It is possible to see a conceptual drawing of a building built on the land, and obtain a more realistic understanding.

Next, a case will be described in which an image divided into a part of the surrounding scenery image 13 and a part of the image 6 of the display element 5 is viewed. The image 13 and the image 6 are divided within the range of the viewing angle of the wearer. For example, when the image is vertically divided, the shutter 23 is opened so that the surrounding scenery image 13 enters a predetermined region below the viewing angle, and the image 6 of the display element 5 is displayed only in the upper predetermined region. , Half mirror 22
With respect to the optical axis of the image 6 emitted from the objective lens 16
Place each time. At this time, the wearer sees the surrounding scenery image 13 in the lower half range of the viewing angle and the image 6 of the display element 5 in the upper half range of the viewing angle.

In practical use, for example, it can be used for remote control of a vehicle. In this case, the image of the landscape by the CG can be seen in the upper half range of the viewing angle of the wearer, and the operation panel of the vehicle in front can be seen in the lower half range. Therefore, the operator can simultaneously view the operation panel system while viewing the CG image of the display element 5, so that remote control closer to reality can be performed without switching images.

As described above, in the second embodiment, the image of the display element, the image of the surrounding scenery, the image obtained by combining the image of the surrounding scenery and the image of the display element, and the image of the surrounding scenery are obtained. Any one of a part and an image divided into a part of the image of the display element can be selected and viewed.

[0025]

As described above, according to the first aspect of the present invention, the image of the display element that has passed through the objective lens,
Any of the images of the surrounding scenery whose optical axis to the eye is straight is selectively switched by the switching means and is made to enter the eye, so that the effect that the surrounding scenery can be easily seen is obtained. According to the invention of claim 2, the image of the display element described above, the image of the surrounding scenery described above, an image obtained by combining the image of the surrounding scenery and the image of the display element, Either a part of the image of the surrounding scenery or an image divided into a part of the image of the display element is selectively switched by the switching means, and the light is incident on the eyes. There is also obtained an effect that recognition and remote operation closer to reality can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of the present invention.

FIG. 2A is a conceptual diagram showing a configuration of an optical system for viewing an image on a display element 5 according to the first embodiment, and FIG.
FIG. 2 is a conceptual diagram showing a configuration of an optical system when viewing a landscape according to the first embodiment.

FIG. 3 is a conceptual diagram illustrating a configuration of an optical system according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a configuration of a conventional head-mounted stereoscopic image display device.

FIG. 5 is a conceptual diagram showing a configuration of the optical system of FIG.

[Explanation of symbols]

 Reference Signs List 5 display element 10 head mounted stereoscopic image display device 15 mirror 16 objective lens 18 switching mirror 19 eyepiece 20 reverse focus lens 22 half mirror 23 shutter

Claims (2)

(57) [Scope of request for utility model registration] An optical system comprising: a display element; at least one objective lens facing the display element; and at least one eyepiece for causing an image passing through the objective lens to enter an eye. Switching means for selectively switching any one of an image of the surrounding landscape in which the optical axis of the light is in a straight line and an image of the display element emitted from the objective lens, and causing the image to enter the eye, A head-mounted stereoscopic image display device, wherein a part of the optical axis of the image of the element coincides with a part of the optical axis of the image of the surrounding scenery. 2. The image processing apparatus according to claim 1, wherein the switching unit combines one of the image of the surrounding scenery and the image of the display element, and the image of the surrounding scenery and the image of the display element. Image, and selectively switching any of an image divided into a part of an image of the surrounding landscape and a part of an image of the display element,
The head-mounted stereoscopic image display device according to claim 1, further comprising a switching unit for causing the light to enter the eye.