WO2007145122A1

WO2007145122A1 - Image display device

Info

Publication number: WO2007145122A1
Application number: PCT/JP2007/061484
Authority: WO
Inventors: Shigeru Kato; Kenzo Chiaki
Original assignee: Nikon Corporation
Priority date: 2006-06-14
Filing date: 2007-06-06
Publication date: 2007-12-21
Also published as: JPWO2007145122A1

Abstract

An image display device has an angle detector for detecting a relative angle between an overhead band (3) and a display-section arm (4). Because the overhead band (3) is usually installed so as to be oriented to the head top direction, and the angle detector detects the angle between the display-section arm (4) and the direction to the head top section. This angle is referred to as “angle of a display section.” Only when the angle of a display section is in the range from 100° to 150°, a video is displayed on the display section (5). In this state, even if an object from the front collides with the display section (5) while the user is viewing the video, the pushed display section (5) strikes the cheek bone and is less likely to strike an eyeball. Thus, the eye is less likely to be hurt.

Description

Specification

Video display device

Technical field

The present invention relates to a video display device.

Background art

In recent years, there have been various glasses-type image display devices that observe images displayed on a display such as a liquid crystal panel (LCD) as a virtual image enlarged through an optical system having an eyepiece lens, a half mirror, and the like. Proposed and called a head-mounted display. An example of such a head mounted display is described in, for example, WO2004Z061519A1 (Patent Document 1).

[0003] In many cases, this video display device is configured to be worn on the face in a form wound around the head, and one of the binocular type and the left and right eyes in which a video display system is formed at a position corresponding to both eyes. There is a one-eye type in which a video display system is formed at a position corresponding to. Such a head-mounted display usually has a display unit for displaying video and a headphone for outputting sound.

[0004] FIG. 1 shows an outline of such a head-mounted display. In this head mounted display 1, two headphone housings 2 are connected by an overhead band 3. Overhead band 3 has elasticity, and when head mounted display 1 is mounted, headphone nosing 2 is positioned at both ear positions, and the head band (ear part) is headed by the elasticity of overhead band 3. Secure with horn knowing 2 in between. That is, the headphone housing 2 is a fixed part, and the overhead band 3 is a connecting part. When worn, as shown in Fig. 1, the overhead band 3 is worn in a position facing the top of the head.

[0005] A display unit arm 4 is attached to the headphone housing 2 so as to be rotatable in a vertical plane when in use, and a display unit 5 for displaying an image on the user's eyes is provided at the tip of the display unit arm 4. It is attached. At the time of use, as shown by a broken line in FIG. 1, the display unit arm 4 is rotated so that the display unit 5 is positioned in front of the user's eyes and an image is displayed. Headphone housing An external cable 6 is connected to the ring 2.

Patent Literature 1: WO2004Z061519A1 Publication

Disclosure of the invention

Problems to be solved by the invention

[0006] When such a head-mounted display is used, particularly when used outdoors, when the display unit 5 collides with an object in front, the display unit 5 contacts the eyeball and damages the eyeball. Like to prevent, give.

[0007] The present invention has been made in view of such circumstances, and provides a video display device in which a display unit is unlikely to contact an eyeball when the display unit collides with a front object in a use state. Let it be an issue.

Means for solving the problem

[0008] A first means for solving the above-described problem is a video display device that is worn on the head and observes the displayed video, and is for fixing the video display device to the head. One fixing portion, a connecting portion for connecting the fixing portion, a support arm supported by one of the fixing portions so as to be rotatable with respect to the fixing portion, and a distal end portion of the supporting arm. Only when the angle force between the support arm and the direction of the head when the image display device is mounted is in the range of 100 ° to 150 °. An image display means for displaying an image.

[0009] A second means for solving the above problem is a video display device that is attached to the head and observes the displayed video, and is for fixing the video display device to the head. One fixing portion, a connecting portion for connecting the fixing portion, a support arm supported by one of the fixing portions so as to be rotatable with respect to the fixing portion, and a distal end portion of the supporting arm. A display unit that displays an image on the eyes of the user, and the angular force formed by the support arm and the direction of the crown when the image display device is mounted is in the range of 80 ° to less than 100 °. The video display means is characterized in that a video is displayed only when a warning is issued and then a predetermined input is received.

The invention's effect [0010] According to the present invention, it is possible to provide a video display device in which the display unit is unlikely to contact the eyeball when the display unit collides with an object ahead in use.

Brief Description of Drawings

FIG. 1 is a diagram showing an outline of a head mounted display.

[Fig. 2] A side force view of the head mounted display.

Explanation of symbols

[0012] 1 ... head mounted display, 2 ... headphone housing, 3 ... overhead band, 4 ... display arm, 5 ... display, 6 ... cable

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an example of the embodiment of the present invention will be described. The structure of the head mounted display according to the present embodiment is the same as that shown in FIG. The description of the structure is omitted by quoting. Fig. 2 is a side view of the head-mounted display.

In this embodiment, an angle detector (not shown) for detecting the relative angle between the overhead band 3 and the display unit arm 4 is provided. Normally, since the overhead band 3 is mounted facing the top of the head, this angle detector detects the angle between the display unit arm 4 and the top of the head. This angle will be referred to as the “angle of the display unit”.

In this embodiment, an image is displayed on display unit 5 only when the angle of display unit 5 is between 100 ° and 150 °. Therefore, the user observes the image displayed on the display unit 5 with the eyeball slightly turned down.

[0016] In this state, even when a forward force or an object hits the display unit 5 while observing the image, the pressed display unit 5 hits the ribs and is unlikely to hit the eyeball. Lower. In general, displaying the image slightly below the image in front of the eyes causes less eye fatigue when observing the image, so this embodiment is also preferable from this aspect. .

[0017] In order to increase the degree of immersion in the displayed image while pressing, it is better to arrange the display unit 5 in front of the eyes. Also, when the user hits the display unit 5 from the front, such as when the user is wearing glasses, the pressed display unit 5 does not hit the eyeball directly. There is. In such a case, there is no problem even if the image is observed with the display unit 5 in front of the eyes.

Therefore, in another embodiment, when the angle of the display unit is between 100 ° and 150 °, an image is unconditionally displayed on the display unit 5 as described above, and the angle of the display unit is When the angle is between 80 ° and less than 100 °, a warning is given to the user, and the video is displayed only when there is a predetermined input from the user who confirmed the warning.

[0019] That is, when the angle of the display unit is between 80 ° and less than 100 °, for example, “You will be in a relaxed position. Make sure that your surroundings are in a safe situation.” If you are not a spectacle wearer, please make sure that the surroundings are in a safe condition. ”When the user presses the confirmation button , Make video output. Continue to warn until the confirm button is pressed. If the angle of the display is less than 80 ° or exceeds 150 °, the video display is turned off unconditionally.

It should be noted that the embodiment described above is a power that is a type of head mounted display in which an image is viewed with one eye. The present invention can also be applied to a head mounted display in which an image is viewed with both eyes. .

Claims

The scope of the claims

[1] A video display device that is worn on the head and observes the displayed video, and includes two fixing portions for fixing the video display device to the head and a connection that connects the fixing portions. A support arm supported to be rotatable with respect to the fixed part, and a display unit that is provided at a distal end of the support arm and displays an image on a user's eyes. And a video display device that displays an image only when an angle formed by the support arm and the direction of the crown when the video display device is mounted is in the range of 100 ° to 150 °. .

[2] A video display device that is mounted on the head and observes the displayed video, and includes two fixing portions for fixing the video display device to the head, and a connection that connects the fixing portions. A support arm supported to be rotatable with respect to the fixed part, and a display unit that is provided at a distal end of the support arm and displays an image on a user's eyes. When the angle between the support arm and the direction of the crown when the video display device is mounted is in the range of 80 ° or more and less than 100 °, a warning is issued, and then a predetermined input is given. A video display device that displays video only at times.