KR100225515B1 - 3d head mounted display - Google Patents

Abstract

The present invention relates to a three-dimensional head-mounted display operating with one video display device. The present invention relates to a video signal processing apparatus, comprising: a display device; first branching means for branching the video signal generated from the one display device into two branches; A second branching means for branching the other video signal among the video signals branched in two by the first branching means into two branches; A second concave mirror that reflects one of the image signals branched by the second branching means so as to focus an image on the retina of the other eye of the user, First and second shutters disposed between the second branching means and the other eye for interrupting the video signals incident on both eyes in synchronization with each other, And a lens for transmitting the other video signal out of the two divided video signals so as to be viewed from the outside. Accordingly, the three-dimensional head-mounted display is light in weight and easy to use, and can reduce the cost of a three-dimensional head-mounted display by reducing the number of video display modules and the circuits and components added thereto

Description

3D Head Mount Display {3D HEAD MOUNTED DISPLAY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional head mount display which is worn on a user's head and is used for language education, movies, listening to music, and the like.

A conventional 3D head mount display uses two video display devices (e.g., LCDs) 1 and 2, as schematically shown in Fig. 1, and these two video display devices 1) 2 are arranged so as to be positioned respectively in front of both eyes 5 and 6 of the user.

The video display apparatuses 1 and 2 and the video display apparatuses 1 and 2 are provided between the eyes 5 and 6 of the user and the two video display apparatuses 1 and 2, (3) and (4) for realizing a three-dimensional stereoscopic image by allowing a left-eye image to remain on the left and right eyes of a user by selectively turning on / off a signal Is installed.

However, the conventional three-dimensional head-mounted display thus configured requires two video display devices 1 and 2, and the same system for processing video signals generated from these two video display devices is redundant As a necessity, the weight of the head mount display is increased, which makes it inconvenient to use, expensive, economically burdensome, and requires additional electronic circuits and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a head mounted display which is light in weight and easy to use and which can reduce the number of circuits and components added to one video display module, Dimensional head-mounted display.

1 is a schematic diagram illustrating a conventional three-dimensional head-mounted display;

2 is a plan view schematically illustrating a first embodiment of a three-dimensional head-mounted display according to the present invention.

3 is a perspective view schematically showing the first embodiment.

4 is a front view of the first embodiment;

5 is a schematic diagram illustrating a second embodiment of a three-dimensional head-mounted display according to the present invention.

Description of the Related Art

11: video display device 12, 13: first and second beam splitter

14, 15: first and second concave mirrors 16, 17: first and second shutters

18, 19: Both eyes 20: Lens

21: shutter 22: screen

23, 24: first and second LCD shutters 25: display driving circuit

According to an aspect of the present invention, there is provided a video display device including a video display device, a first branching device for branching the video signal generated from the one display device in two directions, A first concave mirror that reflects one of the video signals branched from the branch and causes an image focus to be formed on the retina of one eye of the user, and a second concave mirror that reflects the other video signal among the video signals branched in two by the first branching means A second concave mirror for reflecting one image signal among the image signals branched in two by the second branching means and causing the image focus to be formed on the retina of the other eye of the user; , A video signal which is positioned between the first branching means and one eye and between the second branching means and the other eye and which is incident on both eyes, A three-dimensional head-mounted display including first and second shutters for interrupting and a lens for transmitting the other video signal among the video signals branched in two by the second branching means to the outside so as to be viewed from the outside There are features.

According to another aspect of the present invention, there is provided a video display device including: a video display device; first branching means for branching the video signal generated from the one display device into two branches; A first concave mirror for reflecting a video signal of one of the signals so that an image focus is formed on the retina of one eye of the user; and a second concave mirror for reflecting the other video signal among the video signals branched in two by the first branching means into two A second concave mirror for reflecting one image signal among the image signals branched in two by the second branching means so that an image focus is formed on the retina of the other eye of the user; The first and second shutters, which are located between the branching means and one eye, the second branching means and the other eye, respectively, A lens for transmitting the video signal of the other one of the video signals branched by the second branching means to the outside so as to be seen from the outside, and a controller for receiving the audio / video signal of the video equipment and selectively supplying Dimensional head-mounted display including a display driver circuit for driving a display device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a plan view schematically showing a first embodiment of a three-dimensional head-mounted display according to the present invention, Fig. 3 is a perspective view schematically showing the first embodiment, and Fig. 4 is a front view of the first embodiment.

As shown in FIGS. 2 to 4, the first embodiment of the three-dimensional head-mounted display according to the present invention is characterized in that a video signal generated from this display device 11 is displayed in front of one video display device 11 A first branching means for branching into two branches is located. The first branching means comprises a first beam splitter 12 for reflecting and transmitting a video signal, and the transmission and reflection ratio of the first beam splitter 12 is 3: <1.

The first beam splitter 12 is provided with a first concave mirror 12 which reflects the image signal reflected from the first beam splitter 12 to one eye 18 of the user and focuses the image on the retina of the eye 18, (14).

A second beam splitter (13) as a second branching means for splitting the video signal transmitted through the first beam splitter (12) into two branches is provided on one side of the first beam splitter (12) as a first branching means, And the second beam splitter 13 is provided in parallel with the first beam splitter 12 as the branching means, and the transmission and reflection ratio of the video signal is 1: 1.

A video signal reflected from the second beam splitter 13 is reflected on the other eye 19 of the user on the front side of the second beam splitter 13 as the second branching means, And a second concave mirror 15 is provided between the first beam splitter 12 and the second beam splitter 12 to form a video signal And first and second shutters 16 and 17 for interlocking with each other in synchronization with each other.

A lens 20 for transmitting a video signal transmitted through the second beam splitter 13 as a second branching means to the outside so as to be seen from the outside is installed on one side of the second beam splitter 13 as a second branching means A shutter 21 for selectively shielding the image signal from being transmitted to the outside is provided on the front surface of the lens 20 and a screen 21 on which a video signal transmitted through the lens 20 is projected is provided on one side of the shutter 21 22 are installed.

As the video display device 11, a liquid crystal display device (LCD), a cathode ray tube (CRT) tube, or the like is used. Examples of various video devices are PC, VCR, LDP (CDP) and the like.

In the first embodiment of the three-dimensional head-mounted display constructed as described above, the video signal generated from one video display device 11 is transmitted and reflected by the first beam splitter 12 as the first branching means, The image signal reflected by the first beam splitter 12 as the first branching means is split by the first concave mirror 14 into the retina of the user's one eye 18 So that the image focus is reflected.

The image signal transmitted through the first beam splitter 12 as the first branching means is again branched by the second beam splitter 13 as the second branching means at a ratio of 1: 1 in transmission and reflection ratio, The image signal reflected by the second beam splitter 13 as the second branch means is reflected by the second concave mirror 15 so as to focus the image on the retina of the user's other eye 19.

The image signals reflected from the first and second concave mirrors 14 and 15 are incident on the first and second beam splitters 12 and 13 as the first and second branching means and the eye 18 The first and second shutters 16 and 17 provided between the first and second eyes 19 and 19 respectively turn on and off the video signal incident on the eyes 18 and 19 to synchronize them, Dimensional stereoscopic image.

The image signal transmitted through the second beam splitter 13 as the second branching means is projected onto the screen 22 selectively by the shutter 21 after passing through the lens 20. Therefore, it is possible to view the image that the user is viewing from the outside through the screen 22.

Accordingly, the three-dimensional head-mounted display according to the present invention is operated by one video display device, so that it is easier to use than a conventional video display device, It is possible to reduce costs such as peripheral circuits and material costs.

5 is a schematic diagram showing a second embodiment of a three-dimensional head-mounted display according to the present invention.

As shown in FIG. 5, the second embodiment of the three-dimensional head-mounted display according to the present invention is characterized in that a video signal generated from this display device 11 is bifurcated in front of one video display device 11 The first branching means for branching is located. The first branching means comprises a first beam splitter 12 for semi-reflecting and semi-transmitting a video signal. The transmission and reflection ratio of the first beam splitter 12 is 3: 1.

The image signal reflected from the first beam splitter 12 is reflected on one eye 18 of the user on the front side of the first beam splitter 12 as the first branching means to focus the image on the retina of the eye 18 A first concave mirror 14 is provided.

A second branching means for branching the video signal transmitted through the first beam splitter 12 as the first branching means into two branches is provided in parallel to the first branching means. And a second beam splitter 13 having a transmission and reflection ratio of 1: 1.

A video signal reflected from the second beam splitter 13 is reflected on the other eye 19 of the user on the front side of the second beam splitter 13 as the second branching means, And a second concave mirror 15 for concreting the image signals directed to both eyes between the first beam splitter 12 and the second beam splitter 13 and between the eyes 18 and 19 is interrupted First and second LCD shutters 23 and 24, respectively.

A lens 20 for transmitting a video signal transmitted through the second beam splitter 13 as a second branching means to the outside so as to be seen from the outside is installed on one side of the second beam splitter 13 as a second branching means A shutter 21 for selectively shielding the image signal from being transmitted to the outside is provided on the front surface of the lens 20 and a screen 21 on which a video signal transmitted through the lens 20 is projected is provided on one side of the shutter 21 22 are installed.

A display driving circuit 25 for receiving audio / video signals such as PCs, VCRs, and LDPs (CDPs) and selectively supplying the audio / video signals to a video display device is installed on one side of one display device 11 do.

The second embodiment of the three-dimensional head-mounted display according to the present invention thus constituted is characterized in that the video signal generated from one video display device 11 is transmitted and reflected by the first beam splitter 12 as the first branching means The image signal reflected by the first beam splitter 12 as the first branching means is split by the first concave mirror 14 into the retina of the user's one eye 18 So that the image focus is reflected.

The video signal transmitted through the first beam splitter 12 as the first branching means is again branched by the second beam splitter 13 as the second branching means at a ratio of transmission and reflection at a ratio of 1: The image signal reflected by the second beam splitter 13 as the second branching means is reflected by the second concave mirror 15 so as to focus the image on the retina of the user's other eye 19.

The image signals reflected from the first and second concave mirrors 14 and 15 are incident on the first and second beam splitters 12 and 13 as the first and second branching means and the eye 18 The LCD shutter 23 and the first and second LCD shutters 23 and 24 provided between the first and second eyes 19 and 19 respectively turn on and off the video signals incident on the eyes 18 and 19 synchronously with each other, Dimensional stereoscopic image by changing the arrangement of the three-dimensional image.

The image signal transmitted through the second beam splitter 13 as the second branching means is projected onto the screen 22 selectively by the shutter 21 after passing through the lens 20. Accordingly, the user can see the image viewed from the outside through the screen 22. [

Since the display driving circuit 25 is provided on one side of the video display device 11, it is possible to selectively use a PC, a VCR, and an LDP (CDP) as various video devices by connecting them.

As described above, according to the three-dimensional head-mounted display of the present invention, since it is operated by one video display device, compared with the method of using the two video display devices conventionally, This is convenient and reduces the cost of a three-dimensional head-mounted display by reducing one video display module and its associated circuitry and components.

Claims (10)

One video display device, A first branching unit for transmitting a part of the video signal generated from the one display device and reflecting the remaining part of the video signal to bifurcate; A first concave mirror for reflecting the image signal reflected by the first branching means to one eye of the user, A second branching unit for transmitting a part of the video signal transmitted through the first branching unit and reflecting the remaining part of the video signal, A second concave mirror for reflecting the image signal reflected by the second branching means to the other eye of the user, First and second shutters disposed between the first branching means and one eye and between the second branching means and the other eye and for interrupting video signals incident on both eyes in synchronization with each other; And a lens that transmits the video signal transmitted through the second branching means to the outside. 2. The apparatus of claim 1, wherein the first branching means comprises a beam splitter having a transmission and reflection ratio of 3: 1 for an incoming video signal, and wherein the second branching means has a transmission and reflection ratio of 1: Lt; RTI ID = 0.0 &gt; 1 &lt; / RTI &gt; beam splitter. 2. The three-dimensional head-mounted display of claim 1, wherein the first and second shutters are LCD shutters. The three-dimensional head-mounted display of claim 1, further comprising a screen for projecting a video signal from the lens. 5. The three-dimensional head-mounted display according to any one of claims 1 to 4, further comprising a shutter for selectively blocking transmission of an image signal from the lens to the outside. One video display device, A first branching unit for transmitting a part of the video signal generated from the one display device and reflecting the remaining part of the video signal to bifurcate; A first concave mirror for reflecting the image signal reflected by the first branching means to one eye of the user, A second branching unit for transmitting a part of the video signal transmitted through the first branching unit and reflecting the remaining part of the video signal, A second concave mirror for reflecting the image signal reflected by the second branching means to the other eye of the user, First and second shutters disposed between the first branching means and one eye and between the second branching means and the other eye and for interrupting video signals incident on both eyes in synchronization with each other; A lens which transmits the video signal transmitted through the second branching means to the outside, And a display drive circuit for receiving an audio / video signal of the video device and selectively supplying the audio / video signal to the video display device. 7. The apparatus according to claim 6, wherein the first branching means comprises a beam splitter having a transmission and reflection ratio of 3: 1 of an incident image signal, and the second branching means has a transmission and reflection ratio of 1: Lt; RTI ID = 0.0 &gt; 1 &lt; / RTI &gt; beam splitter. 7. The three-dimensional head-mounted display of claim 6, wherein the first and second shutters are LCD shutters. 7. The three-dimensional head-mounted display of claim 6, further comprising a screen for projecting a video signal from the lens. 10. The three-dimensional head-mounted display according to any one of claims 6 to 9, further comprising a shutter for selectively blocking transmission of an image signal from the lens to the outside.