KR19990059970A - Head-mounted video display device that can display 3D images - Google Patents

Abstract

The present invention relates to a head-mounted video display device capable of stereoscopic image display, comprising: an image display unit for displaying a corresponding image by applying data signals of a first image signal and a second image signal which are alternately output on one screen; ; And a lenticular lens unit mounted at an output terminal of the image display unit to separate and output each of the first image and the second image displayed on the image display unit into a left or right image and a right or left image. Lenticular lenses can be used to separate the displayed video signal into left and right video signals, simplifying the structure, reducing manufacturing costs, and reducing the physical burden on the wearer by reducing volume and weight. There is an effect that can be done.

Description

Head-mounted video display device that can display 3D images

The present invention relates to a head-mounted video display device, and more specifically, to a three-dimensional image display capable of displaying a three-dimensional stereoscopic image by using a liquid crystal display panel (LCD). A head mounted video display device is provided.

With the development of computer systems, the research of 3D image display device is actively progressed and the rapid development speed is displayed to display more vivid images on the 2D image display device.

As a result of the development of the three-dimensional image display device, many entertainment devices that can feel a sense of reality have been developed and put into practical use, and virtual reality in a computer system is gradually developed.

Therefore, a user who wants to experience virtual reality is equipped with a head-mounted 3D image display device connected to a computer system, goes into a 3D image unfolded from the 3D image display device, and experiences a world that cannot be experienced in reality. You can experience it.

This virtual reality can arbitrarily set many situations or environments that are difficult to experience in the real situation, and can experience an environment that can cope with the actual situation in the set environment. It is widely used in the field.

In general, the principle that a human sees an image in three dimensions is that the left and right eyes view different images, as shown in FIG. 1.

In more detail, since the left eye and the right eye are located at regular intervals, the eyes of the human eye are different from each other. The image information seen from each of the left eye and the right eye is synthesized in the brain, and a human feels a three-dimensional sense of the image.

In order to display a 3D stereoscopic image according to the above principle, there are conventionally a method using a polarizing plate and a method using two liquid crystal display panels.

The polarizing plate uses two polarizing plates having a vertical polarizing plate in which a longitudinal lattice is formed to be polarized in the vertical direction, and a horizontal polarizing plate in which a lattice in the horizontal direction is formed to be polarized in the horizontal direction.

After mounting a liquid crystal display panel between the vertical polarizer and the horizontal polarizer, a data signal is output to each liquid crystal display panel so that an image can be displayed through the liquid crystal display panel.

In this case, since the vertical polarizer and the horizontal polarizer are mounted on each liquid crystal display panel, the images output from the liquid crystal display panel are polarized images in the vertical direction and the horizontal direction, respectively.

Therefore, the user wears separate polarized glasses and then observes the image output from each vertical / horizontal polarizer to enjoy a three-dimensional stereoscopic image.

In addition, in the method using two liquid crystal display panels, images corresponding to the left and right directions of the subject are respectively photographed by the right camera and the left camera, and then the images captured by the left liquid crystal display panel and the right liquid crystal display panel are respectively recorded. Output

Accordingly, since the image output from the liquid crystal display panel by the left and right image signals L and R respectively enters the observer's eye and synthesizes the image in the observer's brain, the image is recognized as a 3D stereoscopic image.

In order to output a three-dimensional image from the head mounted video display device using such a method, a plurality of polarizing plates, polarizing glasses, and the like are required. In the case of using a liquid crystal display panel, images for left and right images are used. Since a display panel is required, manufacturing cost increases and a structure becomes complicated.

In addition, the volume and size are increased, causing a physical burden on the user who is wearing the head-mounted video display device.

Therefore, an object of the present invention is to solve the above-mentioned problems. When displaying a 3D image through a head mounted image display device, a 3D image can be recognized using only one liquid crystal display panel. It is to provide a head-mounted video display device capable of three-dimensional image representation.

1 is a view showing a principle of viewing a general stereoscopic image,

2 is a block diagram illustrating a head mounted video display device capable of displaying a stereoscopic image according to an exemplary embodiment of the present invention.

3 is a view showing a three-dimensional image principle of the lenticular lens according to an embodiment of the present invention,

4 is a perspective view of a lenticular lens according to an embodiment of the present invention.

The configuration of the present invention for achieving the above object,

An image display unit configured to apply a data signal of a first image signal and a second image signal which are alternately output to one screen, and display a corresponding image;

And a lenticular lens unit mounted at an output terminal of the image display unit to separate and output each of the first image and the second image displayed on the image display unit into a left or right image and a right or left image.

The image display unit is designed to be positioned on a focal plane of the lenticular lens unit.

The lens unit may further include a plurality of lens units for focusing the first and second image signals separated from the lenticular lens unit and outputting them to a viewer's field of view.

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

2 is a block diagram illustrating a head mounted video display device capable of displaying a stereoscopic image according to an exemplary embodiment of the present invention.

3 is a view showing a three-dimensional image principle of the lenticular lens according to an embodiment of the present invention,

4 is a perspective view of a lenticular lens according to an embodiment of the present invention.

As shown in FIG. 2, the configuration according to the embodiment of the present invention is as follows.

Different angle from the right CDC (Charge Coupled Device) camera (10) and the right CD camera (1) for imaging the subject 100 at an arbitrary angle to obtain an electric right image signal (R) Are respectively output from the left CD camera 20 and the right CD camera 10 and the left CD camera 20 to capture the subject 100 to obtain an electric left image signal L. The image synthesizing unit 30 for synthesizing the right image signal R and the left image signal L and outputting the right image signal R and the left image signal L alternately, and the head of the observer 200. And the right image signal (R) and the left image signal (L) alternately output from the image synthesizing unit (30) to be separated into the right image and the left image, respectively, to enjoy the image in three dimensions Head mounted video display (40) There adjuster.

The head mounted image display device 40 is connected to an output terminal of the image synthesizer 30 and is driven by a driving circuit (not shown), and the left / right image signals are alternately applied by the image synthesizer 30. According to (L, R), the liquid crystal display 41 alternately displays corresponding left and right image information, and the left and right images displayed at the output terminal of the liquid crystal display 41 are displayed on the left image and the left image. A lenticular lens unit 42 that separates and outputs a right image, and a right / left eyepiece that outputs the right and left eyes of an observer after condensing an image signal separated and output into the left and right images ( 43,44).

The lenticular lens unit 42 of the head mounted image display device 40 is mounted such that an output side of the liquid crystal display unit 41, that is, a display surface on which an image is displayed, becomes a focal plane.

The image synthesizing unit 30 synthesizes an electric right image signal R output from the right CD camera 10 and an electric left image signal L output from the left CD camera 20. In addition, the right image signal R and the left image signal L may be alternately outputted as data signals of the liquid crystal display 41, using the same or similar technology as that of a known image signal synthesizing apparatus. Can be implemented.

Operation and operation of the head-mounted video display device capable of representing a stereoscopic image according to the embodiment of the present invention by the above configuration are as follows.

In the embodiment of the present invention, instead of capturing one image with one optical system, two different optical images are photographed with different angles, and then the two images are synthesized and displayed when the image is displayed. Make you feel

In particular, in the present invention, the image photographed by the two optical systems are separated into left and right images using a lenticular lens so that the image can be reproduced in three-dimensional form by the observer's vision.

Therefore, the right and left CD cameras 10 and 20, which are composed of an optical system, an image pickup device, a signal processing device, and the like, form an optical image of a subject 100 at a corresponding angle, and then operate as a built-in signal processing device. The image picked up by is converted into a corresponding electrical signal, that is, the right image signal R and the left image signal L, and outputs the converted image to the image synthesizing unit 30.

Therefore, the image synthesizing unit 30 synthesizes each of the captured right / left image signals R and L output from the right CD camera 10 and the left CD camera 20, respectively, and generates a right image signal ( Since the video signal is synthesized so that the R and the left video signal L are alternately present, the observer 200 outputs the image signal to the head mounted video display device 40 so that the observer 200 receives the right CD camera 10 and the left CD camera ( The video information obtained by 20) can be viewed in three dimensions.

Image information output to the head-mounted video display device 40 may use imaging information using a CD camera as in the embodiment of the present invention, or may use image data stored in a memory device or the like.

By the operation of the image synthesizing unit 30, the synthesized signals are sequentially arranged so that the right image signal R and the left image signal L may alternately exist on one screen, and the right image signal R and the left image signal ( L is alternately applied as a data signal to be displayed on the liquid crystal display 41 of the head mounted image display device 40.

Therefore, as shown in FIG. 3, the liquid crystal display 41 is provided with the corresponding data corresponding to the left / right image signals L and R corresponding to one frame. RLRLRLRLR… The respective pixels are sequentially displayed in order.

The left and right image signals L and R are named as left and right image signals L and R for convenience in order to represent an image formed in the left and right eyes of a human in a stereoscopic principle. The image corresponds to only the left side of the subject and does not indicate that the right image signal R corresponds to only the right side of the subject.

As described above, the left and right image signals L and R corresponding to one frame are on the liquid crystal display 41. RLRLRLRL… As shown in order, the display surface of the liquid crystal display 41 of the head mounted image display device 40 is alternately displayed by the convex lens surfaces of the lenticular lens units 42 mounted so as to be the focal plane. Since the right image signal R and the left image signal L are separately input to the right eyepiece 43 and the left eyepiece 44, respectively, the right image signal R and the left image signal L are input to the field of view of the observer 200.

Therefore, since the right image signal R and the left image signal L, which are input to the left and right eyes through the eyepieces 43 and 44, respectively, are synthesized, the observer 200 views a three-dimensional stereoscopic image. You can do it.

As shown above, the three-dimensional principle of the lenticular lens is shown in FIG. 3.

The lenticular lens is a flat convex cylindrical lens group divided into sections for separating the right image signal R and separating the left image signal L in one cylinder, as shown in FIG. 4. Continuously projecting images in different directions from the back side (focal plane) of the user, as shown in the accompanying Figure 3, the user's left and right eyes see different images, so that the user will feel a three-dimensional image.

As described above, when the image is displayed in three dimensions according to the exemplary embodiment of the present invention, a lenticular lens is used to separate the image signal displayed on one liquid crystal display into a left image signal and a right image signal. The effect is to simplify and reduce manufacturing costs.

In addition, since the structure is simplified, the volume and weight are reduced, so that the physical burden of the wearer is reduced.

Claims (9)

An image display unit configured to apply a data signal of a first image signal and a second image signal which are alternately output to one screen, and display a corresponding image; And a lenticular lens unit mounted at an output end of the image display unit to separate and output each of the first image and the second image displayed on the image display unit into a left or right image and a right or left image. Video display device for mounting. The image display apparatus of claim 1, wherein the image display unit comprises: And a liquid crystal display device which displays a video by operating corresponding pixels according to the first video signal and the second video signal to be applied. The image display apparatus of claim 1, wherein the image display unit comprises: And a head mounted image display device on the focal plane of the lenticular lens unit. The method of claim 1, And a plurality of lens units for focusing the first and second image signals separated from the lenticular lens unit and outputting them to a viewer's field of view. A first image signal generator configured to obtain an electrical first image signal of a subject corresponding to an arbitrary angle; A second image signal generator configured to obtain an electrical second image signal of a corresponding subject at a different angle from the first image signal generator; Image synthesis for synthesizing the first image signal and the second image signal output from the first image signal generator and the second production signal generator, and outputting the first and second image signals alternately on one screen. Wealth; An image display unit displaying a corresponding image by applying a data signal to the first image signal and the second image signal which are alternately output from the image synthesizing unit; And a lenticular lens unit mounted at an output terminal of the image display unit to separate and output each of the first image and the second image displayed on the image display unit into a left or right image and a right or left image. Video display device. The method of claim 5, wherein the first and second video signal generator, A stereoscopic image display device comprising a CD camera for capturing an optical image of a subject and outputting the electrical image signal. The display apparatus of claim 5, wherein the image display unit comprises: 3. The stereoscopic image display device of claim 1, wherein a corresponding pixel is operated according to the applied first image signal and the second image signal to display an image. The display apparatus of claim 5, wherein the image display unit comprises: And a focal plane positioned on a focal plane of the lenticular lens unit. The method of claim 5, And a plurality of lens units for focusing the first and second image signals separated by the lenticular lens unit and outputting them to a viewer's field of view.