JPH05191746A - Eyeglass type display device and its diopter adjustment method - Google Patents

Abstract

PURPOSE:To blend colors of each of RGB picture elements without giving a load to eyes and to easily focus a picture of a video display device. CONSTITUTION:A diopter adjustment mark 13 is provided in the vicinity of a display screen 12 of a liquid crystal panel 11 so as to be placed within a range of diopter adjustment and the diopter adjustment mark 13 and the display screen 12 are interlocked with a prescribed interval (d).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diopter adjustment of a spectacles type display, and more particularly to a spectacles type display and a diopter adjusting method for adjusting the diopter by using a diopter adjusting mark as a reference.

[0002]

2. Description of the Related Art Generally, an image display device such as a liquid crystal panel is used for a spectacle type display which is fixed in front of the user, for example, ski goggles, in order to create an artificial reality. .. When a liquid crystal panel of this type is magnified with a lens, each pixel (dot) of this liquid crystal panel is visually recognized. This is because the size of each pixel is too different compared to the resolution of human eyes. For this reason, the image quality of the liquid crystal panel is far from the image quality of televisions and movies that are commonly used. Therefore, at present, the liquid crystal panel is placed in a position that is out of focus,
A filter is provided on the front surface of the liquid crystal panel to blur the display screen so that each pixel of red, green and blue (hereinafter referred to as “RGB”) is mixed and used.

Specifically, when the liquid crystal panel 2 having the arrangement of the color filters 1a and 1b as shown in FIGS. 10 and 11 is viewed from a sufficient distance, each pixel of RGB is appropriately mixed and displayed. The screen looks natural. But,
When this is magnified and viewed with a lens, each pixel in the array exactly as shown is visually recognized, which is not preferable as an image. 10 shows the Δ array full color for AV, and FIG. 11 shows an example of the stripe array full color for OA.

FIG. 12 shows a relationship between an "object point" (a point where an object exists) and an "image point" at which the object is imaged when viewed through a crystalline lens of an eye as a lens. It is a thing. As shown, if someone is focus lens 3 working appropriately, the object that is located at the object point O ₁ is imaged on the image point I ₁ on the retina. Thus, the liquid crystal panel 2
When the object is located at the object point O ₁ , it is in focus on the retina, and therefore, if each pixel of the color filter 1 is much larger than the resolution of the human eye, each pixel can be visually recognized. become. Therefore, at this time, even if an attempt is made to project a mixed color such as white or flesh color onto the liquid crystal panel 2, each pixel of RGB is visually recognized, so that it does not look white or flesh color.

Therefore, as a method of mixing the RGB pixels, there is a technique for moving the object point to shift the focus of the display screen, as shown in FIGS. First, as shown in FIG. 13, the object point O ₂ is a ₁ , a
_When the image point I ₂ is moved from the position ₂ toward the eye (hereinafter, referred to as “near point side”) by Δt ₁ , the image point I ₂ becomes Δ.
It is offset by T ₁ . Normally, the human eye adjusts the lens 3 to form an image on the retina, but if Δt ₁ is set so as to exceed the adjustable range of the lens 3, the image point I ₂ forms an image on the retina. No, it is in a blurred state. Therefore, the above Δ
If t ₁ is set to exceed the adjustable range of the crystalline lens 3, each pixel of RGB will be mixed. Also, FIG.
As shown in FIG. 4, the object point O ₃ is moved from the positions of a ₁ and a ₂ in the direction opposite to the eye (hereinafter, referred to as “far point side”) Δ.
Moving away by t _2, an image point I ₃ is ΔT
_It deviates by ₃ . Also in this case, if Δt ₂ is set so as to exceed the adjustable range of the lens 3, the image point I ₃ does not form an image on the retina, so that the image becomes blurred and each pixel of RGB is mixed. become.

As described above, Δt ₁ and Δt ₂ are set to the crystalline lens 3
If it is set beyond the adjustable range of, the image on the retina will be moderately blurred. Therefore, when a white or flesh-colored image is displayed on the liquid crystal panel 2 in this state, the RGB pixels are blurred and mixed, and when viewed with the eyes, they can be visually recognized as white or flesh-colored.

[0007]

By the way, in the conventional diopter adjusting method for the spectacles type display, by blurring the display screen of the liquid crystal panel 2, each pixel of the display screen is mixed properly. It has become difficult to find the optimum position, and in some cases it puts a strain on the eyes. That is, in particular, as shown in FIG.
_{When 2} is moved from the positions of a ₁ and a ₂ toward the near point side by Δt ₁ so as to mix each pixel of RGB, the human eye naturally tries to form an image on the retina. Works well. For this reason, the lens 3 is inflated to increase its refractive index, but if this state is continued for a long time, the muscles for adjusting the lens 3 continue to be tense, which causes tired eyes.

Further, in the state where the adjustable range of the crystalline lens 3 is exceeded, the image on the liquid crystal panel 2 is blurred, so RGB
Even if the display screen is displayed in white or flesh color due to color mixing of each pixel, it is difficult to adjust and fix the position so that the display image is mixed well in that state. ..

In view of the above problems, an object of the present invention is to form a color display image with each pixel of RGB on the display screen by focusing on the diopter adjustment mark without burdening the eyes. An object of the present invention is to provide an eyeglass-type display and a diopter adjustment method thereof that can be brought to a position where colors can be mixed well.

[0010]

According to the present invention, a diopter adjustment mark is provided near the display screen so as to be located within the diopter adjustable range of the eye. This is achieved by a spectacles display in which the mark and the display screen are linked so as to maintain a predetermined distance. Further, the above-mentioned object is to use this display to provide a diopter adjustment mark near the display screen so as to be located within the diopter adjustable range of the eyes, and to provide the diopter adjustment mark and the display screen. In order to keep them at a predetermined distance, blur the image on this display screen to mix the red, green, and blue pixels, and in this state, focus the diopter adjustment mark. This can also be achieved by adjusting the diopter of the display.

[0011]

According to the above construction, the diopter adjustment mark is provided near the display screen, and the diopter adjustment mark is positioned within the diopter adjustable range of the eye. Further, the diopter adjustment mark and the display screen work together so that they maintain a predetermined distance.

Therefore, when the image on the display screen is blurred, the R, G, and B pixels are mixed in color, and for example, an image of white or skin color can be displayed. However, in this state, since the image on the display screen is blurred, it is difficult to find the position where the right mixed color image is formed while viewing the display image.

However, if the diopter adjustment mark that is interlocked with the display screen at a predetermined distance is used for focusing, when the diopter adjustment mark is in focus, the image on the display screen is displayed. Is mixed well, and its operation is easy. Further, since the diopter adjustment mark is provided so as to be separated from the display screen by a predetermined distance and to be located within the diopter adjustable range of the eye, it is easy to focus the mark. ..

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the examples described below are suitable specific examples of the present invention, and therefore, various technically preferable limitations are attached thereto, but the scope of the present invention particularly limits the present invention in the following description. Unless otherwise stated, the present invention is not limited to these modes.

FIG. 1 is a schematic configuration diagram of a first embodiment of a glasses-type display. As shown, for example, an effective display screen 1 of a video display device 11 such as a liquid crystal panel.
A diopter adjustment mark 13 is provided at a position that does not overlap with 2, i.e., is displaced from the display screen 12 in the plane direction thereof and serves as a mark for confirmation of diopter adjustment. The diopter adjustment mark 13 is formed on the surface (b ₁ , b of the liquid crystal panel 11).
It is located at a distance d from the _second surface) to the near point side. The distance d is appropriately determined depending on the size of the display panel, the number of pixels, the scale of the entire device, and the like, but as described later, when the user focuses on the diopter adjustment mark 13, the display screen 12 is displayed. The distance at which the constituent RGB pixels are most appropriately mixed is selected in advance. The diopter adjustment mark 13 has high contrast and high resolution, and is represented by characters and symbols that can be visually recognized clearly.
As the diopter adjustment mark 13, any character or symbol may be used as long as the visibility is high, and the size thereof can be set arbitrarily.

In this embodiment, the diopter adjustment mark 13 is, for example, "NO SMOKING" 13a or "non-smoking" 13b, as shown in FIGS.
Is composed of white letters on a red background.
As shown in FIGS. 4 and 5, the diopter adjustment mark 13 has a dimensional ratio of a “non-smoking” display device 14 installed in a theater or a movie theater and a stage screen 15 to each other. Diopter adjustment mark 1 corresponding to (A: B)
The dimensional ratio (C: D) between 3 and the liquid crystal panel 11 is set. That is, the dimensional relationship of A: B≈C: D is set. Further, as shown in FIG. 6 which is a schematic plan view of the display, the diopter adjustment mark 13 is provided.
Is formed as a transmissive mark that uses the backlight light 16 that illuminates the liquid crystal panel 11 from behind as a light source 16a and that light transmits through the diopter adjustment mark 13. Further, specifically, as shown in FIGS. 6 and 7, the diopter adjustment mark 13 is formed on the liquid crystal panel 11.
The liquid crystal panel 11 is provided on a casing 17 for housing the liquid crystal panel 11 and is disposed on both sides of the display screen 12 of the liquid crystal panel 11. further,
The diopter adjustment mark 13 is configured to be movable and adjusted to the near point side or the far point side, and the diopter adjustment mark 13 and the liquid crystal panel 11 are interlocked to maintain the distance d. It is supposed to do. That is, for example, a driving device such as a cylinder or a small motor (not shown) is connected to the liquid crystal panel 11 via a predetermined transmission means, and the liquid crystal panel 11 and the diopter adjustment mark 13 are fixed at a distance D. ..

The spectacle-type display of this embodiment is constructed as described above, and its operation will be described in detail through the explanation of the diopter adjusting method using this display. First, when the diopter adjustment mark 13 is moved so that it can be seen in a natural state, the liquid crystal panel 11 is displaced to the far point side by the distance d. At this time, the diopter adjustment mark 13
The liquid crystal panel 11 and the liquid crystal panel 11 are interlocked while maintaining a distance d. Here, as described in FIG. 14 of the related art, when the white or flesh color is displayed on the liquid crystal panel, if the distance d is selected in advance so as to have the same relationship as the visible distance Δt ₂ with the white or flesh color, In FIG. 8 as well, the white or flesh color displayed on the liquid crystal panel 11 appears to be a mixture of each pixel of RGB as the panel 11 moves by the distance d, and the display screen 12 is mixed with white or flesh color just right. .. Further, in the conventional diopter adjustment technique shown in FIG. 14, since a blurred image is viewed, it is difficult to set the position of Δt _{2 on} the display screen. But,
Since the diopter adjustment mark 13 of this embodiment is located closer to the liquid crystal panel 11 than the liquid crystal panel 11 and is in the diopter adjustable range, and characters and symbols with high visibility are drawn, It is possible to bring only one point by focusing the diopter adjustment mark 13 shown in FIG. 1 in a state where the lens 18 of the human eye is not overloaded, that is, in a natural state. Then, the display screen 12 is brought to the far point side from the mark 13 by a preset distance d,
In the state that each pixel of RGB is just mixed well,
The best color image can be displayed. Here, the human eye unconsciously acts to adjust the crystalline lens when trying to gaze, and "sees well" when the accommodation force is applied.
Therefore, it is much easier to focus the diopter adjustment mark 13 than to find an appropriate color mixture position while directly looking at the display screen 12. In the figure, 19 is a lens.

As a secondary effect, the diopter adjustment mark 13 is provided, for example, in "NOSMOKING" 13
Since the letters a and "non-smoking" 13b are formed as white letters on a red background, the visibility is extremely high. Then, the dimensional ratio of the diopter adjustment mark 13 and the liquid crystal panel 11 (C:
D) is the dimensional ratio of the "non-smoking" display device 14 installed in a theater or movie theater to the stage screen 15 (A:
Since B) is set to be maintained, it is possible to create a virtual space as if one were in a movie theater. Further, in order to bring the diopter adjustment mark 13 closer to the actual object,
Since it is formed as a transmissive type, even if it is dark, the visibility adjusting mark 13 of the character "non-smoking" appears to appear, and it is possible to produce a space that is closer to reality, that is, closer to a movie theater.

FIG. 9 shows a second embodiment of a spectacle-type display to which the present invention is applied. In this embodiment, an optical filter 20 for blurring an image is installed on the front side of the liquid crystal panel 11. This optical filter 20
Are located closer to the near point than the focal planes (b ₁ and b ₂ planes). When such an optical filter 20 is used, the image is blurred as in the case where the focus is shifted, but it becomes difficult to obtain an appropriate image forming position by the amount of the blur.
Since the near point side is easy for humans to see, it is easy to make a blurred image closer to the eye. At this time, the muscles of the crystalline lens 18 tend to be in a tense state. Therefore, the diopter adjustment mark 13 is placed closer to the point e than the b ₁ and b ₂ planes, and the diopter adjustment mark 13 is used to bring the diopter adjustment mark 13 into focus so that the diopter adjustment mark 13 is interlocked. Liquid crystal panel 11
Is configured to move to the far point side by a distance e.

This embodiment is different from the first embodiment in that the display screen 12 of the liquid crystal panel 11 is blurred by using the optical filter 20 to mix each pixel of RGB. However, the technical effect that the display screen 12 can be brought to a position where the screen 12 displays an appropriate color by adjusting the diopter adjustment mark 13 is basically the same. ..

[0021]

As described above, according to the spectacles type display and the diopter adjusting method thereof according to the present invention, the RG of the display screen can be displayed only by focusing the diopter adjusting mark.
Each pixel of B can be brought to a position where the colors can be mixed properly so as to form a color display image, and it does not burden the eyes.

[Brief description of drawings]

FIG. 1 is a schematic view showing a first embodiment of a glasses-type display according to the present invention.

FIG. 2 is a schematic view showing an example of a diopter adjustment mark of the glasses-type display of the first embodiment.

FIG. 3 is a schematic view showing another example of the diopter adjustment mark of the glasses-type display of the first embodiment.

FIG. 4 is a schematic diagram illustrating a dimensional ratio A: B between a movie theater screen and a “non-smoking” display device.

FIG. 5 is a dimensional ratio C between the liquid crystal panel and the diopter adjustment mark:
It is a schematic diagram explaining D.

FIG. 6 is a schematic plan view showing an example in which the diopter adjustment mark of the spectacles-type display of the first embodiment is configured as a transmission type.

FIG. 7 is a front view of the glasses-type display of the first embodiment.

FIG. 8 is a schematic diagram showing a diopter adjustment operation of the glasses-type display of the first embodiment.

FIG. 9 is a schematic diagram showing a diopter adjustment operation in the glasses-type display of the second embodiment.

FIG. 10 is a schematic diagram showing an example of a Δ array full color for AV.

FIG. 11 is a schematic view showing an example of an OA stripe array full color.

FIG. 12 is a schematic diagram showing an imaged state of an object on a retina.

FIG. 13 is a schematic diagram showing an example of a conventional diopter adjustment technique for a glasses-type display.

FIG. 14 is a schematic diagram showing an example of a conventional diopter adjustment technique for a glasses-type display.

[Explanation of symbols] 12 display screen 13 diopter adjustment mark 18 crystalline lens d distance between diopter adjustment mark and display screen

Claims (2)

[Claims] 1. A diopter adjustment mark is provided in the vicinity of a display screen so as to be located within a diopter adjustable range of an eye, and the diopter adjustment mark and the display screen maintain a predetermined distance. A spectacle-type display characterized by being configured to work together. 2. A diopter adjustment mark is provided in the vicinity of a display screen so as to be located within a diopter adjustable range of eyes, and the diopter adjustment mark and the display screen maintain a predetermined distance. Eyeglasses, characterized in that the image on the display screen is blurred to mix red, green, and blue pixels, and the diopter adjustment mark is focused in this state. How to adjust the diopter of the display.