JP2003329965A - Head mount display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head mount display (HMD) which has light mountability of a nose pad system and is made adjustable to an easily visible place without depending upon the shape of the user's face. <P>SOLUTION: The HMD of a nose pad type has a display section having at least a display element, an optical system for enlarging the image on the display element, a back light, and a holder for supporting the display element and the optical system, and an exterior cover, a nose pad, and a mounting frame, and the display section is made rotationally adjustable in the vertical direction. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head mounted display, and more particularly to a mounting adjustment method in a nose-type mounting method.

[0002]

2. Description of the Related Art Recently, a visual device of a type called a head mounted display (hereinafter referred to as HMD), which is mounted on the nose or worn on the head so that an image displayed on a display portion can be viewed, is a video image or a personal computer. It came to be offered for the purpose of seeing the screen of.

The HMD is a device for watching videos and the like while getting immersed, watching videos and the like without affecting the surroundings, and watching videos and the like in a free place. However, since the device is used by being worn on the nose or head, the device is required to be lightweight, have a comfortable fit, be easily attached and detached, and have excellent portability.

In order to meet these conditions, there has been provided a product in which the weight of the main body is reduced as much as possible and a nose pad is provided to receive the load of the HMD.

These HMDs are disclosed, for example, in JP-A-X-Olympus. The HMD disclosed in Japanese Patent Laid-Open No. X-Olympus is configured such that the HMD is attached by a nose pad and side frames that are brought into contact with the left and right occipital regions, and according to the height of the user's nose. The height of the nose pad can be adjusted, and the display of the HMD can be adjusted to a desired height for the eyes.

Also, as disclosed in Japanese Patent Laid-Open No. Y-xxxx, there is a display unit of an HMD which can be rotated in the vertical direction by increasing the degree of freedom of a hinge for mounting.

[0007]

By the way, in an HMD which is mounted on the nose so that an image can be viewed, the body is lightweight and the face of the user is prevented so that the nose does not hurt. It is necessary to adjust the position and direction of the screen according to the shape of. That is, the viewing window of the HMD can be positioned in the direction in which the user can easily look in front of the user's eyes, and at that position, the image on the display device is enlarged by the optical system. It is necessary to be able to adjust the angle at which the light can enter from the front of the user's eyes.

However, in the technique disclosed in the above-mentioned Japanese Patent Laid-Open No. X-Olympus, a mechanism for adjusting the angle at which the light beam obtained by enlarging the image on the display element with the optical system can enter from the front of the user's eyes. Therefore, there is a drawback that the user cannot always see the light that has passed through the center of the optical system with less distortion and blurring at a position where it can be easily viewed.

Further, in the technique disclosed in Japanese Patent Laid-Open No. Y-xxxx, since a fixed frame is provided and the display unit can be adjusted in the vertical direction with respect to the fixed frame, the weight becomes heavy and the shape becomes large. However, there is a drawback in that the light feeling of use is hindered because it becomes large.

[0010]

The HMD according to the present invention comprises:
By solving the above-mentioned problems of the conventional visual device and realizing small size and high portability, good quality has passed through the center of the optical system for users of any face shape. A display capable of visualizing an image, and for that purpose has at least a display device, an optical system for enlarging an image on the display device, a backlight means, and a holder for supporting the display device and the optical system. The part is configured such that the outer cover and the pad contacting the nose can be rotated and adjusted in the vertical direction.

In the HMD according to the present invention, the surface of the outer cover facing the display unit has a predetermined curvature to cover the display unit and to provide a rear cover to which the display unit is fixed, and the rear cover is the outer cover. The vertical rotation can be adjusted along the curvature of the facing surface.

Further, the HMD according to the present invention has a rear cover fixed to the outer cover, the display unit is housed between the outer cover and the rear cover, and the display unit includes the outer cover and the rear cover. Rotational adjustment is possible in the vertical direction within the space between the covers, and an adjustment operation means is provided.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an exploded perspective view of a first embodiment of an HMD according to the present invention, and FIG. 2 is a first embodiment of an HMD according to the present invention.
FIG. 3 is a partial cross-sectional view of a main part of the embodiment of FIG.

In FIG. 1, 1 is a display unit, 2 is an exterior cover, 3 is a first mounting frame, 4 is a second mounting frame, and 5a and 5b are nose pads.

The rear cover 1a of the display unit 1 is provided with first mounting portions 1b and 1c (not shown). Also,
The rear cover 1a has a first viewing window 1d and a second viewing window 1d.
e is provided so that the image can be enlarged and displayed on both eyes of the user.

The mechanism for enlarging and displaying the image on the image display element to the user's eyes is realized by the structure shown in FIG. In FIG. 2, 6 is a free-form surface prism,
Reference numeral 7 is a holder, 8 is a pressing spring, 9 is a screw, 10 is a screw, 11 is an image display element, and 12 is a backlight.
The free-form surface prism 6 is configured such that the flange portion 6b of the free-form surface prism is positioned on the holder 7, and the pressing spring 8 is pressed by the screw 9 to be fixed to the holder 7. The free-form surface prism 6 is provided with another flange, and similarly, the free-form surface prism is fixed to the holder 7 by being positioned and pressed by the holder 7. The holder 7 has an image display device 1 such as a liquid crystal panel.
0 is fixed so as to maintain a predetermined relationship with the free-form surface prism 6. Further, the backlight 12 is fixed so as to maintain a predetermined relationship with the image display element. With such a configuration, a monocular image display structure is established, and the holder 7 is
The other pair of free-form surface prisms, image display element, and backlight are fixed to form a binocular display unit. The display unit is fixed to the rear cover 1a with screws 10.

The outer cover 2 is provided with first and second engaging portions 2a and 2b as shown in FIG.
The curvature of the rear side surface of the exterior cover 2 and the front side curvature of the rear cover 1 are made to coincide with each other, and as shown in FIG. 2, the first and second engaging portions 2a and 2b of the exterior cover 2 By engaging the mounting portions 1b and 1c (not shown) of the rear cover 1a, the display unit 1 can be rotated and adjusted in the vertical direction.

The outer cover 2 is provided with nose pads 5a and 5b which come into contact with the nose, and the outer cover 2
Is provided with first and second hinges 2c and 2d,
Each of the first and second mounting frames 3 and 4 is attached so as to be foldable within a predetermined range like glasses.

With this structure, the HMD according to the first embodiment of the present invention has a luminous flux emitted from the optical system depending on individual differences such as the height of the nose and the position of the eyes when the HMD is worn. The deviation from the direction of the eyeball can be corrected to the correct direction by rotating the display unit up and down.

(Second Embodiment) In the first embodiment of the present invention described above, since the entire display portion can be rotated and adjusted in the vertical direction, the distance between the rear cover and the face of the user is reduced. Since it changes depending on the adjustment, there is still a possibility that the user who wears eyeglasses must repeat the adjustment of the nose pad and the adjustment of the visual axis.

A second embodiment of the present invention capable of solving such a problem will be described with reference to FIGS. 3A and 3B.

[0023]

As a result, the display element, the optical system for enlarging the image on the display element, the backlight means, the holder for supporting the display element and the optical system, and the display element are driven. The optical system includes an electric circuit board and an exterior cover, the optical system includes a free-form surface prism, the electric circuit board and the display element are electrically connected by a flexible printed board, and the outer side surface of the free-form surface prism is formed. The electric circuit board is arranged on the outer side surface portion of the free-form surface prism by utilizing the fact that the position is narrower than the width of a person's face and does not cause a problem in storability. .

Since the visual device according to the present invention uses the free-form surface prism as the optical system and arranges the electric circuit board on the outer side surface of the free-form surface prism, it has an excellent effect that it can be made small and excellent in portability. It is a thing.

Further, in the visual device according to the present invention, when the electrical circuit board is assembled under the optical conditions necessary for realizing natural binocular vision, such as vertical displacement of the visual axis,
The present invention has an excellent effect that it is possible to provide a visual device capable of preventing a deviation due to the influence of bending of an electric circuit board and performing safe and comfortable binocular vision.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a visual device according to a first embodiment of the present invention.

FIG. 2 is a mechanism for enlarging and displaying an image on an image display device.

FIG. 3 is a diagram of a second embodiment of the present invention.

[Explanation of symbols]

1,2 free-form surface prism 3 holder 4,5 LCD panel 6,7 Flexible printed circuit board 8 electric circuit boards 9,10 Backlight unit 11, 12 cases

Continued front page    (72) Inventor Takashi Sudo             Kyano, 3-30-2 Shimomaruko, Ota-ku, Tokyo             Within the corporation

Claims (4)

[Claims] 1. A display element, an optical system for magnifying an image on the display element, a backlight unit, a display section having at least a holder for supporting the display element and the optical system, an exterior cover, and a nose. It has a pad to be in contact with and a mounting frame, the display unit can be rotationally adjusted in the vertical direction with respect to the exterior cover, and the mounting frame is fixed to the exterior cover so as to be foldable. Head mounted display. 2. The head mounted display according to claim 1, wherein a surface of the outer cover facing the display section has a predetermined curvature, the display section has a rear cover for covering the display section, and the rear cover is A head-mounted display characterized in that it is possible to adjust the rotation in the vertical direction along the curvature of the facing surface of the exterior cover. 3. The head mounted display according to claim 1, further comprising a rear cover fixed to the outer cover, the display unit being housed between the outer cover and the rear cover, and the display unit including: A head-mounted display characterized by being capable of vertical rotation adjustment in a space between an outer cover and a rear cover. 4. The head mount display according to claim 3, further comprising an adjusting operation unit for adjusting the display unit in the vertical direction.