JPH11249593A - Display device and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device permitting to effectively make use of a space on desk when plural display pictures are displayed at the same time. SOLUTION: The display device has a display screen 10, mirrors 13, 14, 15, 16, and classification means 11 and 12. Light outgoing from the display screen 10 transmits the classification means 11, 12, and is reflected by two sets of mirror groups 13, 14 and 15, 16 and made incident on an eye separately to from virtual images 17, 18. When different images time-shared by each odd number field and even number field are displayed on the display screen 10, it is possible to classify different virtual images 17, 18 from each other by arranging a liquid crystal shutter opened and closed in synchronization with each field as a classification means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a method for displaying two images on one display screen.

[0002]

2. Description of the Related Art At present, one television (TV) requires one.
The age of watching only one program has entered the multimedia era, and the time spent in multi-windows is increasing. In addition, multi-windows are indispensable for work on a personal computer (personal computer). Conventionally, when displaying a plurality of screens at the same time, measures have been taken to subdivide the CRT screen or increase the number of CRTs.

[0003]

However, the CRT
When increasing the number of devices, the space on the desk cannot be used effectively. Also, when subdividing the CRT screen,
The subdivision makes the screen smaller and harder to see, causing eye fatigue. On the other hand, there is a method of enlarging with a lens, but if the entire screen is covered, a lens larger by the magnification of the screen is required, and the space on the desk must be used effectively as in the case of increasing the number of CRTs Can not be done.

Accordingly, an object of the present invention is to provide a display device and a method capable of effectively using a space on a desk when a plurality of screens are simultaneously displayed.

[0005]

The present inventor has previously made a prototype of a camera attachment capable of taking a three-dimensional image (3D) with a single video camera (refer to Japanese Patent Application No. 9-202081). Instead, I found that when I looked at the TV screen with my own eyes, the screen seemed to be divided into two. By providing the separation means by such an attachment immediately before the light enters the pupil while being separated into right and left, different images can be simultaneously viewed on two surfaces.

[0006] The present invention has been made based on such knowledge, and a display device according to a first aspect of the present invention has a display screen on which a mixed image including a first image and a second image is displayed. Optical means for separating the displayed mixed image into two mixed images, and separation for separating one of the separated two mixed images into the first image and the other into the second image Means for displaying images for two surfaces on the display screen for one surface. In the display device of the present invention having the above configuration, the mixed image including the first image and the second image displayed on the display screen is separated into two mixed images by the optical unit, and the separated images are separated by the separating unit. One of the two mixed images is classified into the first image, and the other is classified into the second image. Thus, when a plurality of screens are displayed simultaneously, the above-described object of effectively using the space on the desk can be achieved.

The optical means comprises first and second mirrors, and captures light rays of the mixed image emitted from the display screen directly into the eye without reflecting the light rays on the first and second mirrors. On the other hand, the angle of the first and second mirrors is set such that the light beam of the mixed image reflected by the first and second mirrors disposed opposite to each other via the light beam directly captured by the eye is captured by the eye. Is preferably set. Further, the display screen is a CRT screen in which the first image and the second image are displayed in odd and even fields, respectively, and the classification means is a shutter that opens and closes in synchronization with the switching of the fields. Is preferred. Further, the display screen is a CRT screen in which a first polarizing plate is attached to a tube surface, and a voltage-controlled polarizing element whose polarization angle is switched by a voltage is arranged on the front surface so as to be perpendicular or parallel to the polarization angle. It is preferable that the separation means is composed of two second polarizing plates having a polarization angle that matches each of the orthogonal polarization angles.

[0008] Further, the display screen is a CRT screen on which a first polarizing plate whose polarization angle is switched so as to be orthogonal by voltage is attached to the front surface,
It is preferable to include two second polarizing plates having a polarization angle that matches each of the switched polarization angles. In addition, it is preferable that the first image and the second image are images having different color wavelengths, and the classification unit includes a color filter that classifies the images having different color wavelengths.

Further, the display screen is a liquid crystal display screen having a first polarizing plate having a polarization angle orthogonal to each line adhered to the front surface, and the optical means emits light from the liquid crystal display screen. A mirror for reflecting light rays of the mixed image, wherein the classifying means has a polarization angle matching a polarization angle of the light rays reflected by the mirror and a polarization angle of light rays directly incident without being reflected by the mirror; It is preferable to be composed of a second polarizing plate. In this case, a voltage control polarizing element whose polarization angle is switched by a voltage is provided on the front surface of the first polarizing plate attached to the liquid crystal display screen, and the liquid crystal is synchronized with the switching of the polarization angle by the voltage control polarization element. It is preferable to switch the mixed image displayed on the display screen. Further, it is preferable that the optical means and the classification means are provided in pairs for both eyes. in this case,
It is preferable to provide an interpupillary distance adjusting mechanism for adjusting the optical means and the sorting means provided in pairs for the both eyes in accordance with the interpupillary distance. Further, it is preferable that the two mixed images are vertically separated. Preferably, the two mixed images are separated in the left-right direction. Also,
It is preferable that the image forming apparatus further includes an adjusting unit for adjusting an interval between the two mixed images separated by the optical unit.

A display method according to a fourteenth aspect displays a mixed image comprising a first image and a second image on a display screen, separates the displayed mixed image into two mixed images,
Separating one of the separated two mixed images into the first image and the other into the second image, and displaying two images on the display screen for one surface. Features.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a display device and a method according to the present invention will be described. FIG. 1 is a diagram showing a basic configuration of a display device according to the embodiment. This display device divides a mixed image composed of two different images displayed on one display screen 1 into two mixed images 3 and 4 by an optical unit 2 such as a mirror, and separates the two images. Mixed image 3,
4 is transmitted through the separation means 5 and 6, respectively, to separate one mixed image into two different images.

[0012] Here, an image pickup device which mounts a camera attachment for taking in left and right separate images at the center of the camera lens and picks up L and R stereoscopic images with one camera is already known (Japanese Patent Application No. Hei 7 (1994) -207). -334423). The above-described display device can be configured by using the same mirror group as such a camera attachment and looking at the display screen with eyes placed instead of the camera lens.

FIG. 2 is a diagram showing a configuration of a display device having a mirror group arranged similarly to a camera attachment. In this display device, the light emitted from the display screen 10 passes through the separation means 11 and 12 and is reflected by two mirror groups 13, 14 and 15 and 16, respectively, and separately enters the eyes to form virtual images 17 and 18. To form When a mixed image of different images time-divided for each of the odd field and the even field is displayed on the display screen 10, the two virtual images 17, 1
By providing a liquid crystal shutter that opens and closes in synchronization with the switching of the fields as the classifying means 11 and 12 for classifying into 8, different virtual images 17 and 18 can be completely classified.

FIG. 3 is a view showing a liquid crystal display screen in which a polarizing plate whose polarization angle is straight for each line is stuck on the surface. On the liquid crystal display screen 20 on which a polarizing plate 19 whose polarization angle is orthogonal for each line is stuck on the surface, an image displayed for each of the odd and even lines is different. Here, a liquid crystal display screen 20 in which a polarizing plate 19 whose polarization angle is orthogonal to each line is stuck on the surface will be described. The polarizing plate 19 has a polarization angle that is effectively orthogonal to each other. In practice, a half-wave plate is attached to the liquid crystal display screen 20 every other line.

As shown in FIG. 16, a liquid crystal display screen 20 is composed of two polarizing plates 19 in which liquid crystal molecules are twisted by 90 degrees.
a and 19b. The liquid crystal display screen 20 turns on / off the passage of the backlight by voltage control for each pixel.
The image is displayed by pressing F. If a polarizing plate orthogonal to each line is attached to the front surface, a polarizing plate orthogonal to each line must be attached also to the backlight side. Alternatively, the polarity of ON / OFF must be reversed for each line.

In the present embodiment, in order to save such trouble, as shown in FIG.
As a result, the same effect is obtained by attaching 9c. As shown in FIG. 18, the half-wave plate 19c rotates the polarization angle of incident light having a polarization angle by 90 degrees and emits the light. For example, as shown in FIG. 19, an image controlled to be ON with left-up polarized light reaches the observer as information having different (orthogonal) polarization angles. Thus, the half-wave plate 19c
Is attached every other line (see FIG. 17), and a polarizing plate orthogonal to each line is attached to the front surface (see FIG. 20).
Can be realized. When such a liquid crystal display screen is used, a light-weight and inexpensive polarizing plate can be used as the separation means 11 and 12 arranged in the same manner as in FIG. 2, and the two images can be obtained regardless of the switching speed and Sorted without flicker.

When the display screen 10 is a CRT screen, a polarizing plate is attached to the tube surface, and the polarization angle is changed by 90 degrees in synchronization with the switching of the frame (screen) by a pie cell which is a voltage control polarizing element. , Classification means 1 on CRT screen
Polarizers can be used as 1 and 12, and can be completely separated into different virtual images 17 and 18. here,
A pi-cell is a device made of a ferroelectric liquid crystal and capable of switching a polarization angle at high speed by voltage control.
3-80114). Further, when two images are mixed images drawn with different color wavelengths (for example, red and blue), the virtual images 17 and 18 can be separated by using the red and blue filters as the separation means 11 and 12. Is possible.

Here, the positions of the separation means 11 and 12 such as a liquid crystal shutter, a polarizing plate, and red and blue filters may be set in a range where two images can be separated. At the positions 11A and 12A of the separation means 11,
It is also possible to place 12. Although FIG. 2 shows the configuration of the display device when used with a single eye, it is practically used with both eyes. FIG. 4 is a diagram showing a configuration of a display device when used with both eyes. Since this display device used by both eyes is composed of eight mirrors, it takes time to adjust the positions of these mirror groups.

FIG. 5 is a diagram showing a configuration of a display device for a single eye in which three mirrors are arranged. As in FIG. 2 described above,
The light emitted from the display screen 21 passes through the separation means 22 and 23, is reflected by the two mirror groups 24, 25 and 25 and 26, and is separately incident on the eyes to form virtual images 27 and 28. The mirror 25 is a double-sided mirror, and the distance between the virtual images 27 and 28 can be adjusted to one degree by changing its angle. Therefore, the position adjustment is simplified as compared with the configuration shown in FIG.

FIG. 6 is a diagram showing a configuration of a display device for two eyes by arranging two sets of three mirrors for a single eye in FIG. In this case, since only six mirrors are required as compared with the eight mirrors in FIG. 4, the position adjustment of the mirrors can be simplified. However, in order to make the virtual images 27 and 28 coincide with each other, the position adjustment of the mirrors is required. It is troublesome.

The present inventor has previously proposed a camera attachment composed of two mirrors for 3D photographing (see Japanese Patent Application No. 9-202081). FIG. 7 is a diagram showing a basic configuration of a camera attachment using two mirrors used for 3D imaging. This camera attachment is mounted in front of the lens of one video camera, and the first mirror 101 is attached as close as possible to the position on the right half of the photographing lens 102 that does not obstruct the information. The information of the left half of the photographing lens 102 is taken in combination with the second mirror 103 covering half. Then, the right half information of the photographing lens 102 is directly taken in without using a mirror, and a part of the left and right stereoscopic information lighting windows is shared, thereby obtaining a stereoscopic image having substantially less left and right parallax.

FIG. 8 is a diagram showing a configuration of a display device having two mirrors arranged similarly to the camera attachment of FIG. A part of the light emitted from the display screen 30 is directly incident on the eye 37 and forms a real image 31 formed on the retina.
And a virtual image 36 that is reflected by the mirrors 32 and 33 and enters the eye 37. In this case, the information of the two images partially overlaps in front of the mirror (part A in the figure).
4, 35 will be placed just before the eye 37 (the retina part). Since one image (real image 31) is directly viewed, the distance between the virtual image 36 and the virtual image 36 can be changed by adjusting the angle of one of the mirrors 32 and 33. Therefore, the position adjustment of the mirror can be extremely simplified. FIG. 9 is a diagram three-dimensionally showing the configuration of the display device of FIG. Note that the sorting means 34 and 35 are omitted in FIG.

FIG. 10 is a diagram showing a configuration of a binocular display device in which mirrors are arranged as in FIG. FIG. 10 shows a case where the directions of two images (real image 31 and virtual image 36) that separate the display screen 30 when viewed with both eyes 37 are vertical. In FIG. 10, the sorting means 34 and 35 are omitted.

This display device is designed such that the mirrors 32 and 33 are horizontally long so that each of them can cover the left eye and the right eye, so that the distance between the two images is the angle of one of the mirrors. Only needs to be adjusted.
6, and the position adjustment can be remarkably simplified as compared with FIG. FIG. 11 is a view 2 in which the display screen is separated with both eyes.
FIG. 2 is a diagram illustrating a configuration of a display device in which the direction of a sheet image is a left-right direction.

In the above embodiment, the optical means for dividing the mixed image displayed on the display screen into two images is a mirror. However, the optical means is not limited to a mirror. It may be a prism. However, in the case of a prism, the slope of the mountain increases as the image divided into two images increases, and color shift or graphic distortion due to refraction becomes severe, and image quality may be impaired. Also, mirror 3
A mechanism for adjusting the angle of 2, 33 may be provided, and the interval between two images can be easily changed. Further, in the case of a display device used with both eyes, an eye width adjusting mechanism for adjusting a mirror group and a separation means provided in pairs for both eyes in accordance with the eye width may be provided. In addition, the axis of the optical system can be matched with the center of the pupil.

Next, in the case where a polarizing plate having a polarization angle of 45 degrees in the horizontal angle and orthogonal to the "C" shape is provided on the display screen, the phenomenon that the polarization angle is inverted by an odd number of reflections by the mirror is considered. A display device that separates a mixed image displayed on a display screen into two images by using and setting a mirror larger than the display screen at a substantially right angle will be described.

FIG. 12 is a diagram showing a configuration of a display device for separating two images using a mirror when the polarization angle is 45 degrees in the horizontal angle and is orthogonal to the "C" shape. As the display screen, as shown in FIG. 3, a liquid crystal display screen 40 in which a polarizing plate 49 whose polarization angle is orthogonal for each line is stuck on the front surface,
The liquid crystal display screen 40 displays a different image for each of the odd and even lines. FIG. 12 shows a case where "K" is displayed on even-numbered lines having a 45-degree right-upward angle and "O" is displayed on odd-numbered lines having a 45-degree right-downward angle. And 45
When viewed through the polarizing plate 45 having an ascending right angle, only the “K” image of the even-numbered lines having the same polarization angle is separated from the right display screen 40, and the left virtual image 44 reflected on the mirror 46 is displayed.
From this, the polarization angle is inverted from the lower right to the upper right, and only the "O" image of the odd-numbered line with the matching polarization angle is separated.
As described above, two different images can be easily displayed on the display device including the display screen 40 to which the polarizing plate 49 is attached, the mirror 46, and the polarizing plate 45.

FIG. 13 is a diagram showing a configuration of a display device using a CRT screen in the same arrangement as in FIG. In this display device, a polarizing plate 49 having a polarization angle of 45 degrees is attached to the surface of a CRT screen 48, and the polarization angle is changed by 90 degrees in synchronization with the switching of the frame (screen) in the pi-cell 41 so as to be time-divided. The images 42 and 43 are projected on a mirror 46 which is set up at a substantially right angle. When these images 42 and 43 are viewed through a polarizing plate 45 having a right-up angle of 45 degrees, the eye 47 has the right-up-angle polarization angle of the two images 42 and 43 before passing through the mirror. Only the certain image 42 is included in the two images reflected on the mirror, and only the image 44 whose polarization angle is inverted corresponding to the image 43 having the polarization angle falling to the right is included. Therefore, two images 42 and 44 having different polarization angles can be simultaneously viewed through the polarizing plate 45.

FIG. 14 is a view showing the appearance of a product to which a display device for separating two images using a mirror is applied.
FIG. 3A shows a case where two different images are displayed on the left and right, and FIG. 3B shows a case where two different images are displayed on the top and bottom. As a polarizing plate, an eyeglass type is usually used, but not limited to the eyeglass type, it is also possible to use a shape that is wide enough to cover two surfaces,
You will be released from the hassle of wearing glasses. in this way,
In a display device that displays two different images on one display screen, each image deteriorates to half the vertical resolution as shown in FIG. The best solution is to increase the number of pixels of the liquid crystal.

FIG. 15 is a diagram showing a configuration of a display device capable of suppressing deterioration of the vertical resolution. The display screen is composed of a polarizing plate 5 whose polarization angle is orthogonal for each line as shown in FIG.
9 is a liquid crystal display screen 50 stuck on the surface. The pi-cell 51 is placed in front of the liquid crystal display screen 50 that displays a different image for each of the odd and even lines, and its polarization angle is switched at high speed by voltage control. The writing speed of each field of the liquid crystal display screen, which alternately displays a polarization angle of 45 degrees rightward and a polarization angle of 45 degrees rightward for each line, is doubled (for example, 1/120 second), and two different sheets are written. The image is written in the order of odd-numbered lines and even-numbered lines. Then, the polarization angle is rotated by 90 degrees by the pi-cell 51 (the state within the dashed line), and the lines of the two different images are changed.
Writing is performed in the order of odd-numbered lines. As a result, it is possible to display two different images each consisting of a full line and having the same polarization angle, and to suppress degradation in resolution.

[0031]

According to the display device of the first aspect of the present invention, the mixed image composed of the first image and the second image displayed on the display screen is converted into two mixed images by the optical means. One of the two mixed images separated by the separation means is separated into the first image and the other is separated into the second image. In particular, when applied to the display screen of a notebook computer, one screen can be expanded to two screens, and characters and the like can be displayed in a large size. Usually, when a space for two computers cannot be secured as in the case of the notebook type personal computer, an excellent effect can be exhibited. In addition, the number of pixels of a liquid crystal screen has been increasing more and more in recent years, and the resolution thereof has led to eye fatigue for middle-aged and elderly people, and has resulted in excessive quality. It is also preferable for those who desire a display that is larger than the resolution and easy to see.
The same effect can be obtained in the display method according to the fourteenth aspect.

According to the display device of the present invention, the optical means is constituted by first and second mirrors, and the light of the mixed image emitted from the display screen is transmitted to the first mirror.
And light rays of the mixed image reflected by the first and second mirrors disposed opposite to each other via light rays directly captured by the eye while being reflected directly by the eye without being reflected by the second mirror. Since the angles of the first and second mirrors are set so as to take in the number of mirrors, the position adjustment of the mirrors can be extremely simplified because the number of mirrors is two. In addition, when the screen viewed with the naked eye is the main screen, when the eyes are brought closer, the screen is enlarged without changing the position, and the image can be viewed in detail. In other words, in the case of fusion of two virtual images, the position of the image fluctuates depending on the position of the eye.
Not only is the image difficult to see, but also a part of the image may be missing. However, since the image is viewed as a real image, such a problem does not occur.

[0033] According to the display device of the third aspect, the display screen includes a display C on which the first image and the second image are displayed in odd and even fields, respectively.
Since it is an RT screen and the discriminating means is a shutter which opens and closes in synchronization with the switching of the field, when applied to a TV screen, two different images are related on the left and right by By connecting the images, it is possible to form a super wide screen of about twice the horizontal direction while keeping the vertical width of the TV screen as it is.

According to a fourth aspect of the present invention, the display screen is a liquid crystal display screen in which a first polarizing plate having a polarization angle orthogonal to each line is attached to the front surface, Is composed of two second polarizers having a polarization angle that matches each of the orthogonal polarization angles, so that a single liquid crystal display having a polarizer whose polarization angle is orthogonal for each line attached to the surface When applied to a screen, in normal use, the left image (L) and the right image of a 3D image are line-by-line in addition to the purpose of viewing two different screens without impairing the performance such as the original brightness and resolution. By displaying the information of (R), a 3D image can be viewed with polarized glasses whose polarization angles are orthogonal.

According to the display device of the fifth aspect, the display screen has a first polarizing plate attached to the tube surface, and the polarization angle is switched by a voltage so as to be perpendicular or parallel to the polarization angle. CRT with voltage-controlled polarizing element arranged on the front
Since the screen is a screen, and the classification means is composed of two second polarizing plates having polarization angles that match each of the orthogonal polarization angles, a polarizing plate can also be used for a CRT screen.

[0036] According to the display device of the sixth aspect, the first image and the second image are images having different color wavelengths, and the classifying means includes a color filter for classifying the images having different color wavelengths. With this configuration, it is possible to easily display two images by separating mixed images having different colors.

According to the display device of the present invention, the display screen is a liquid crystal display screen having a first polarizing plate having a polarization angle orthogonal to each line adhered to a front surface thereof, and Is a mirror for reflecting the light beam of the mixed image emitted from the liquid crystal display screen, and the classification unit is configured to determine the polarization angle of the light beam reflected by the mirror and the light beam directly incident on the mirror without being reflected by the mirror Since it is composed of a second polarizer having a polarization angle that matches the polarization angle of
It is applicable to various products.

According to the display device of the present invention, a voltage-controlled polarizing element whose polarization angle can be switched by a voltage is provided on the front surface of the first polarizing plate attached to the liquid crystal display screen. Since the switching of the mixed image displayed on the liquid crystal display screen is performed in synchronization with the switching of the polarization angle by, the deterioration of the vertical resolution can be suppressed.

According to the display device of the ninth aspect, since the optical means and the separation means are provided as a pair for both eyes, it can be used for both eyes suitable for practical use.

According to the display device of the tenth aspect, the interpupillary distance adjusting mechanism for adjusting the optical means and the sorting means provided in pairs for the two eyes according to the interpupillary distance is provided. The axis of the optical system and the center of the pupil can be matched according to the interpupillary distance of the individual.

According to the display device of the eleventh aspect, the two mixed images are separated in the vertical direction, so that two different images separated in the vertical direction can be displayed.

According to the display device of the twelfth aspect, since the two mixed images are separated in the left-right direction, two different images separated in the left-right direction can be displayed.

According to the display device of the thirteenth aspect, since the adjusting device for adjusting the interval between the two mixed images separated by the optical device is provided, the interval between two different images can be easily changed. Can be.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a basic configuration of a display device in an embodiment.

FIG. 2 is a diagram showing a configuration of a display device having a mirror group arranged similarly to a camera attachment.

FIG. 3 is a diagram showing a liquid crystal display screen on which a polarizing plate whose polarization angle is linear for each line is stuck.

FIG. 4 is a diagram showing a configuration of a display device when used with both eyes.

FIG. 5 is a diagram illustrating a configuration of a monocular display device in which three mirrors are arranged.

6 is a diagram showing a configuration of a display device in which two sets of three monocular mirrors of FIG. 5 are arranged for both eyes.

FIG. 7 is a diagram showing a basic configuration of a camera attachment using two mirrors used for 3D imaging.

FIG. 8 is a diagram showing a configuration of a display device having two mirrors arranged similarly to the camera attachment of FIG. 7;

FIG. 9 is a diagram three-dimensionally illustrating a configuration of the display device of FIG. 8;

FIG. 10 is a diagram illustrating a configuration of a display device for both eyes in which a mirror is arranged as in FIG. 9;

FIG. 11 is a diagram illustrating a configuration of a display device in which the directions of two images separated by viewing the display screen with both eyes are horizontal.

FIG. 12 is a diagram illustrating a configuration of a display device that separates two images using a mirror when a polarization angle is orthogonal to a “C” shape at a horizontal angle of 45 degrees.

FIG. 13 is a diagram showing a configuration of a display device using a CRT screen in the same arrangement as in FIG.

FIG. 14 is a diagram illustrating an appearance of a product to which a display device that separates two images using a mirror is applied.

FIG. 15 is a diagram illustrating a configuration of a display device capable of suppressing deterioration in vertical resolution.

FIG. 16 is a diagram showing a liquid crystal display screen having a structure sandwiched between two polarizing plates.

FIG. 17: 1 / Attached to the liquid crystal display screen every other line
It is a figure showing a two-wavelength plate.

FIG. 18 is a diagram illustrating the operation of a half-wave plate that rotates and emits light by 90 degrees.

FIG. 19 is a diagram showing how information whose polarization angles are orthogonal is emitted.

FIG. 20 is a diagram illustrating a polarizing plate attached to the front surface of a liquid crystal display screen and orthogonal to each line.

[Explanation of symbols]

1, 10, 20, 21, 30, 40, 50 ... display screens,
5, 6, 11, 12 ... sorting means, 17, 18, 27, 2
8, 36 ... virtual image, 13, 14, 15, 16, 24, 2
5, 26, 32, 33, 46: mirror, 31: real image, 1
9, 49, 59: Polarizing plate

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[Procedure amendment]

[Submission date] June 2, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

The optical means comprises first and second mirrors, and captures light rays of the mixed image emitted from the display screen directly into the eye without reflecting the light rays on the first and second mirrors. On the other hand, the angle of the first and second mirrors is set such that the light beam of the mixed image reflected by the first and second mirrors disposed opposite to each other via the light beam directly captured by the eye is captured by the eye. Is preferably set. Further, the display screen is a CRT screen in which the first image and the second image are displayed in odd and even fields, respectively, and the classification means is a shutter that opens and closes in synchronization with the switching of the fields. Is preferred. In addition, the display screen, La
A first polarizer having a polarization angle orthogonal to each in
It is a liquid crystal display screen stuck, wherein the classification means,
It is preferable that the second polarizer be composed of two second polarizers having a polarization angle that matches each of the orthogonal polarization angles.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] Further, the display screen has a first bias on the tube surface.
Stick a light plate and make it perpendicular or parallel to its polarization angle
Voltage-controlled polarizers whose polarization angle is switched by voltage
Preferably , the screen is a CRT screen having a screen placed on a front surface thereof, and the classification means includes two second polarizing plates having a polarization angle that matches each of the switched polarization angles. In addition, it is preferable that the first image and the second image are images having different color wavelengths, and the classification unit includes a color filter that classifies the images having different color wavelengths.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a display device and a method according to the present invention will be described. FIG. 1 is a diagram showing a basic configuration of a display device according to the embodiment. This display device divides a mixed image composed of two different images displayed on one display screen 1 into two mixed images 3 and 4 by an optical unit 2 such as a mirror, and separates the two images. Mixed image 3,
4 is transmitted through the separation means 5 and 6, respectively, to separate one mixed image into two different images 7 and 8 .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

FIG. 14 is a view showing the appearance of a product to which a display device for separating two images using a mirror is applied.
FIG. 3A shows a case where two different images are displayed on the left and right, and FIG. 3B shows a case where two different images are displayed on the top and bottom. As a polarizing plate, an eyeglass type is usually used, but not limited to the eyeglass type, it is also possible to use a shape that is wide enough to cover two surfaces,
You will be released from the hassle of wearing glasses. in this way,
In a display device that displays two different images on one display screen, each image deteriorates to half the vertical resolution as shown in FIG. The best solution is to increase the number of vertical pixels of the liquid crystal.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

FIG. 15 is a diagram showing a configuration of a display device capable of suppressing deterioration of the vertical resolution. The display screen is composed of a polarizing plate 5 whose polarization angle is orthogonal for each line as shown in FIG.
9 is a liquid crystal display screen 50 stuck on the surface. The pi-cell 51 is placed in front of the liquid crystal display screen 50 that displays a different image for each of the odd and even lines, and its polarization angle is switched at high speed by voltage control. The writing speed of each field of the liquid crystal display screen, which alternately displays a polarization angle of 45 degrees rightward and a polarization angle of 45 degrees rightward for each line, is doubled (for example, 1/120 second), and two different sheets are written. Images A and B
Is written in the order of odd-numbered lines and even-numbered lines. Then, the polarization angle is rotated by 90 degrees by the pi-cell 51 (the state within the dashed line), and the two different images A and B are changed in line and written separately in the order of even-numbered line and odd-numbered line. As a result, it is possible to display two different images A and B each composed of full lines and having the same polarization angle, and to suppress deterioration in resolution.

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

Claims (14)

[Claims] 1. A display screen on which a mixed image composed of a first image and a second image is displayed; an optical unit for separating the displayed mixed image into two mixed images; Separating means for separating one of the mixed images into the first image and the other into the second image, and displaying two images on the one display screen. Characteristic display device. 2. The optical means comprises first and second mirrors, and captures light rays of the mixed image emitted from the display screen directly into the eye without being reflected by the first and second mirrors. On the other hand, the angle of the first and second mirrors is set so that the light of the mixed image reflected by the first and second mirrors disposed opposite to each other via the light directly captured by the eye is captured by the eye. The display device according to claim 1, wherein: 3. The display screen is a CRT screen in which the first image and the second image are displayed in odd and even fields, respectively, and the classification means opens and closes in synchronization with the switching of the fields. The display device according to claim 1, wherein the display device is a shutter. 4. The display screen is a liquid crystal display screen in which a first polarizing plate having a polarization angle orthogonal to each line is attached to a front surface, and the sorting unit is configured to apply the first polarization plate to each of the orthogonal polarization angles. 2. The display device according to claim 1, wherein the display device comprises two second polarizing plates having matching polarization angles. 5. A CRT in which a first polarizing plate is attached to a tube surface of the display screen, and a voltage-controlled polarizing element whose polarization angle is switched by a voltage is disposed on the front surface so that the polarization angle is perpendicular or parallel to the polarization angle. 2. The display device according to claim 1, wherein the display unit is a screen, and wherein the sorting unit includes two second polarizing plates having a polarization angle that matches each of the switched polarization angles. 3. 6. The image processing apparatus according to claim 1, wherein the first image and the second image are images having different color wavelengths, and the classifying unit includes a color filter for classifying the images having different color wavelengths. The display device according to 1. 7. The display screen is a liquid crystal display screen in which a first polarizing plate having a polarization angle orthogonal to each line is attached to a front surface, and the optical unit emits light from the liquid crystal display screen. A mirror for reflecting light rays of the mixed image, wherein the classifying means has a polarization angle that matches a polarization angle of the light rays reflected by the mirror and a polarization angle of light rays directly incident without being reflected by the mirror; 2. The display device according to claim 1, comprising a second polarizing plate. 8. The first liquid crystal display screen having a first
Providing a voltage-controlled polarizing element whose polarization angle can be switched by a voltage on the front surface of the polarizing plate, and switching the mixed image displayed on the liquid crystal display screen in synchronization with the polarization angle switched by the voltage-controlled polarizing element. The display device according to claim 7, wherein: 9. The display device according to claim 1, wherein said optical means and said sorting means are provided in pairs for both eyes. 10. The display device according to claim 9, further comprising an interpupillary distance adjusting mechanism for adjusting the optical means and the separating means provided in pairs for the two eyes according to the interpupillary distance. . 11. The display device according to claim 1, wherein the two mixed images are vertically separated. 12. The display device according to claim 1, wherein the two mixed images are separated in the left-right direction. 13. The display device according to claim 1, further comprising adjusting means for adjusting an interval between two mixed images separated by the optical means. 14. A mixed image composed of a first image and a second image is displayed on a display screen, the displayed mixed image is separated into two mixed images, and the separated two mixed images are separated. A display method comprising: separating one of the images into the first image and the other into the second image, and displaying two images on the one display screen.