JPH05176260A - Eyeglass type image display device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the optical system of a spectacle-type image display device that allows the user to see the image on the head like glasses so that the image is placed in an appropriate position in front of the eye for easy viewing. A rectangular main body 11 having a gentle curved surface along at least the front surface of the face that covers both eyes, and ear hooks 12 provided on both sides of the main body, and an isosceles is formed in the center of the inside of the main body. The prism 15 is an isosceles triangular prism having an angle of about 45 degrees and is vertically provided with the bottom of the triangle facing the face.
An image display surface of a small-sized image display unit 16 is provided on the bottom surface of the triangle of FIG. 1 facing the prism 15, and eyepieces 13 and 13 are provided at the face side of the main body unit 11 in front of both eyes. An eyeglass-type image display device, characterized in that mirrors 14, 14 are provided at a position on the front side in the front of the main body portion at an angle for reflecting the line of sight at a right angle to the facing isosceles surface of the prism 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle-type image display device capable of viewing an image on the head like glasses.

[0002]

2. Description of the Related Art Japanese Laid-Open Patent Publication No. 1-1334 discloses a display device which allows a user to see an image on his head like glasses.
In No. 79, the light emitting part of the TV is arranged so as to be the blind spots of both eyes, and a long trapezoidal reflector is arranged below it at the position where the blind spots of both eyes are arranged. There is disclosed a visual device which is reflected by a mirror and is reflected by a concave mirror, and is arranged so that the concave mirror just focuses the light on both eyes, and these are detachably attached to the head like ski goggles.

[0003]

Although the above-mentioned visual device is a headphone type television that can be worn on the head,
The emitted television image is located between the eyes just in front of the nose, which is the blind spot of both eyes, and the television image is reflected by a concave mirror to see a large image with both eyes. The distance is only about 3 cm, and it is impossible for the reflector of this width to make it visible to both eyes even if the image is magnified by the concave mirror. Therefore, the present invention provides an eyeglass-type image display device in which an optical system for image display is improved so that an image is placed at an appropriate position in front of the eye for easy viewing.

[0004]

[Means for Solving the Problems] A main body of a rectangular body having a gentle curved surface along at least the front surface of the face that covers both eyes, and ear hooks on both sides of the main body are provided at the center of the inside of the main body. Is an isosceles prism having an isosceles angle of about 45 degrees and is vertically provided with the base of the triangle facing the face, and the bottom surface of the triangle of the prism is an image display surface of a small image display unit. Is provided toward the prism, and an eyepiece is provided at the front side of the body on both sides of the face, and an isosceles face facing the prism is provided at the front side position in the body in front of both eyes. It is an eyeglass-type image display device in which mirrors are provided at angles for reflecting the light at right angles.

[0005]

The operation of the above-mentioned structure will be described. An observer wearing the eyeglass-type image display device sees the image on the image display section. The optical path of the image that enters the observer's eyes is as follows when viewed from the image display unit. First, the image on the image display unit enters the prism from the bottom surface of the prism and is internally reflected by the isosceles surface of the prism. Out of the internally reflected image, the isosceles surface on the opposite side goes out of the prism. Of the images that have emerged from the isosceles surface of the prism to the outside, the images that have emerged at a right angle from the isosceles surface are reflected by the mirror toward the eye and enter the eye through the eyepiece lens.

In other words, the observer sees his or her line of sight through the eyepieces to the respective mirrors in front of the eyes, and the line of sight is made incident on the isosceles surface of the prism at a right angle. That is, the light is internally reflected by the isosceles surface on the opposite side, and the line of sight is made incident on the bottom surface of the prism, so that the image on the image display portion of the bottom surface of the prism is viewed with both eyes.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the state of use of a spectacle-type image display device of the present invention. When the eyeglass-type image display device 10 is used, the face part 1 of the human body is worn like eyeglasses. Then, the TV tuner 20 and the battery box 30 are attached to the waist belt 2, and the connection cords 21 and 3 are respectively attached.
At 1, the eyeglass-type image display device 10 is connected. As a result, the image from the television tuner 20 can be observed on the eyeglass-type image display device 10.

FIG. 2 is a perspective view of the eyeglass-type image display device. FIG. 3 is a plan view of the optical system of the eyeglass-type image display device.

The spectacle-type image display device 10 has a rectangular main body 11 having a gentle curved surface along the front surface of the face covering both eyes, and ear hooks 12, 12 on both sides of the main body 11. There is. The binocular position corresponding to the face side on the back surface of the main body is open, and the eyepieces 13, 13 are opened in the openings.
Is provided. Square mirrors 14 and 14 are provided on the front side positions in the main body part in front of both eyes.
In the main body part, it is erected at an angle so as to reflect toward the central front side. In the center of the main body 11, an isosceles prism 15 having an isosceles angle of about 45 degrees is erected with the bottom of the triangle facing the face. The mirror 14,
The line of sight reflected by 14 is incident on the isosceles surface of the prism at a right angle and is transmitted, and is reflected by the isosceles surface on the opposite side and is incident on the bottom surface. An LCD is provided on the bottom surface of the prism 15.
A display surface of a small-sized image display unit 16 made of (liquid crystal display) is provided.

An observer who wears the eyeglass-type image display device 10 having the above-mentioned optical system configuration changes his or her line of sight to the eyepiece lens 13,
Each of the mirrors 14 and 14 in front of the eye is seen through the mirror 13. At the mirrors 14 and 14, the line of sight is incident on the isosceles surface of the prism 15 at a right angle, and at the prism 15, the opposite isosceles side is incident. The line of sight is internally reflected by the surface and is incident on the bottom surface of the prism, and the image on the image display unit 16 provided on the bottom surface of the prism is viewed with both eyes. Since the line of sight enters the prism at a right angle, there is no spectral separation at the entrance surface. In other words, the image displayed on the image display unit 16 is internally reflected by the isosceles surface of the prism. The screen internally reflected by the right side surface is reflected on the mirror 14 in front of the left eye, and the screen internally reflected by the left side surface is reflected by the mirror 14 in front of the right eye.
Reflected in. By viewing the images reflected on the respective mirrors through the eyepieces 13 and 13, the images can be seen as one.

In FIG. 1, a drive circuit board 17 for driving the image display unit 16 is arranged on the upper surface of the main body 11, and the image input jacks 2 are provided on the left and right of the front of the main body.
2. A battery jack 32 is provided and connected to the drive circuit board 17.

Although not shown, a sound input jack may be provided in addition to a video input jack and a speaker or an earphone may be provided so that sound can be heard, and the eyepiece lens 12 may be a Fresnel lens. Of course, the battery may be built in the eyeglass-type image display device 10. When using the glasses-type image display device 10, it is possible to enjoy the game image by using the TV tuner 20 as a main body of a portable video game machine. Further, it is possible to incorporate a video game machine into the glasses-type image display device itself.

[0013]

As described above, the eyeglass-type image display device of the present invention can be worn by the observer wearing the main body like eyeglasses. Since the image display is projected in front of the eyes and the image displayed on the image display unit is reflected twice, the image entering the eyes of the observer is not an inverted image but an upright image. In addition, the eyes can be viewed with both eyes comfortably, so the eyes are less tired. It provides a compact and lightweight structure with a small number of optical system components.

[Brief description of drawings]

FIG. 1 is a diagram showing a state of use of an eyeglass-type image display device of the present invention.

FIG. 2 is a perspective view of an eyeglass-type image display device.

FIG. 3 is a plan layout view of an optical system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Face part of a human body 2 ... Belt 10 ... Glasses type image display device 11 ... Main body part 12 ... Ear part 13 ... Eyepiece 14 ... Mirror 15 ... Prism 16 ... Image display part 17 ... Drive circuit board 20 ... TV tuner 21 … Connection cord 22… Video input jack 30… Battery box 31… Connection cord 32… Battery jack

Claims (1)

[Claims] 1. A main body of a rectangular body having a gentle curved surface along at least the front surface of the face that covers both eyes, and ear hooks provided on both sides of the main body, and an isosceles is provided in the center of the inside of the main body. An isosceles prism having an angle of about 45 degrees is vertically provided with the base of the triangle facing the face, and the base of the triangle of the prism is provided with a video display surface of a small video display on the prism. The eyepieces are provided in front of both eyes on the face side of the body, and at the front side position in the body in front of both eyes, the line of sight is reflected at right angles to the isosceles surface facing the prism. An eyeglass-type image display device, characterized in that mirrors are provided at respective angles.