JP4254629B2 - 3D image appreciation tool and 3D image appreciation system - Google Patents

Description

The present invention relates to a three-dimensional image viewing device and a 3D image viewing system capable of viewing the image for the left eye and right eye are displayed in parallel as steric images.

As a three-dimensional image appreciation system for viewing a planar image three-dimensionally using parallax between the left eye and the right eye, there are those described in Patent Documents 1, 2, and 3.
That is, in Patent Document 1, the display screen is divided into left and right halves, the left eye (or right eye) image is displayed on the left side, and the right eye (or left eye) image is displayed on the right side. In this three-dimensional image appreciation system, image separation means such as a polarizing filter is provided, and the left eye has only an image for the left eye. It is described that a stereoscopic image can be obtained so that only the right eye image can be seen by the right eye.

  In Patent Document 2, a left-eye image and a right-eye image are alternately displayed on a display screen, and both images are polarized in different directions. Polarized glasses that are polarized in different directions are put on, so that the image for the left eye can only enter the left eye and the image for the right eye can only enter the right eye, and a stereoscopic image can be obtained. Are listed.

Furthermore, Patent Document 3 discloses that a display screen in which a pixel array for the left eye and a pixel array for the right eye are alternately formed in the horizontal direction and light is transmitted in the horizontal direction to the viewer side of the display screen. The light emitted from the pixel array for the left eye of this display screen is transmitted to the viewer's left eye. An apparatus is described in which a three-dimensional image can be obtained with the naked eye so that light that enters and the light emitted from the pixel array for the right eye of the display screen enters the right eye of the viewer.
JP-A-7-75136 JP 7-159730 A JP 7-261119 A

  However, in the display device disclosed in Patent Document 1, since one display screen is divided into two left and right regions and the left-eye image and the right-eye image are displayed, the resolution and the number of pixels of the displayed image are determined by the display screen. There is a problem that the image is reduced to half compared with the case where one image is displayed using the whole image. Furthermore, since the screen is vertically long, there is a problem that the wide feeling is impaired.

In addition, the devices of Patent Document 1 and Patent Document 2 have a problem that the brightness of the screen is significantly lowered because of the use of polarized glasses.
Furthermore, since the apparatus of Patent Document 2 alternately displays the left-eye image and the right-eye image, the number of images per unit time is halved and flickering occurs.
On the other hand, since the apparatus of Patent Document 3 displays the left-eye image and the right-eye image alternately for each pixel column in the horizontal direction, there is a problem that the horizontal resolution is reduced by half.

Therefore, the present invention has been made in view of the above-described conventional problems, and allows viewing of a stereoscopic image with a wide sense and a high use efficiency of a display screen without a decrease in brightness or a decrease in the number of images. An object of the present invention is to provide a 3D image apparel and a 3D image appreciation system.

The present invention has the configuration described in the following (1) to (3) as a means for solving the above problems. That is,
(1) Display a left eye image and the right-eye image parallel base and is configured to be able to observer the left-eye and right-eye images are observed as a three-dimensional image using a glasses in three-dimensional image viewing system,
Main Gane has a left-eye lens unit and the right-eye lens,
Left-eye lens unit, in a state in which the observer is wearing the eyeglasses, and a convex lens which optical axis is arranged offset to the left outside of the left eye of the viewer, the optical axis on the right outer side of the left eye of the viewer is configured in combination is a concave lens which is arranged offset,
The right-eye lens group is a convex lens in which the optical axis is offset to the right outside of the viewer's right eye and the optical axis is offset to the left outside of the viewer's right eye with the viewer wearing glasses. It is configured by combining with the concave lens made,
A light-shielding part that is arranged in parallel with the left-eye lens group and the right-eye lens group, and a boundary part where the light-shielding amount gradually decreases from both ends of the light-shielding part toward the outer left and right ends. A three-dimensional image appreciation system comprising a light shielding body having
(2) A 3D image viewing tool for observing a left eye image and a right eye image displayed side by side as a 3D image,
The three-dimensional image apparel includes a left eye lens group and a right eye lens group,
A light-shielding portion disposed between the left-eye lens group and the right-eye lens group;
Have
The left-eye lens group and the right-eye lens group are each configured by combining a convex lens and a concave lens,
The convex lens in the lens group for the left eye and the convex lens in the lens group for the right eye are arranged to face each other with the thin part of the lens as an inner end,
The concave lens in the left-eye lens group and the concave lens in the right-eye lens group are arranged so that the thin portions of the lenses face each other as inner end portions,
The three-dimensional image appreciation tool, wherein the light shielding portion has a light shielding amount decreasing portion in which the light shielding amount gradually decreases toward the left and right ends on both ends of the light shielding portion.
(3) The left-eye image and the right-eye image are displayed side by side, and the displayed left-eye image and right-eye image can be viewed as a three-dimensional image using the three-dimensional image viewing tool described in (2). A three-dimensional image appreciation system characterized by that.

  According to the present invention, the image for the left eye and the image for the right eye each observe an image captured with the image range of the image for the left eye offset to the left and the image range of the image for the right eye offset to the right. Therefore, a wide imaging range is displayed, and it is possible to view a horizontally long and wide-looking 3D image even though two images are displayed side by side.

Hereinafter, a three-dimensional image appreciation system according to each embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a 3D image appreciation system according to the first embodiment of the present invention, and FIG. 2 is a diagram explaining a mechanism of 3D image appreciation according to the present invention. FIG. 3 is a plan view of an optical system that captures an image for the left eye and an image for the right eye according to the present invention, and FIG. 4 is a plan view showing a three-dimensional image viewing system according to the second embodiment of the present invention. FIG. 5 is a front view showing light transmission of the light shielding plate used in the second embodiment of the present invention.

First, a first embodiment of the present invention will be described with reference to FIGS.
The three-dimensional image viewing system according to the first embodiment of the present invention displays a left-eye image and a right-eye image side by side and displays the left-eye image and the right-eye image using dedicated glasses. In a three-dimensional image viewing system for observing images with a corresponding eye, a convex lens having an optical axis offset to the outside of both eyes of the viewer and a concave lens having an optical axis offset to the inside of both eyes of the viewer Dedicated eyeglasses that have a left-eye lens and a right-eye lens configured in combination, the left-eye image capturing range to the left, the right-eye image capturing range to the right, and offset by a predetermined angle The captured left and right images are used.

  In FIG. 1, a left-eye image 12 and a right-eye image 13 captured by an imaging camera, which will be described later, are displayed side by side on a display screen 11 such as a liquid crystal display. The size and relative position of both images at this time differ depending on the size of the display screen of the display to be used. However, in the configuration of the present invention, the interval between the same picture parts of both images on the screen is larger than the eye width of the viewer. It is preferable that the image is displayed so as to be wide.

The viewer 16 sees the display screen 11 through the left-eye lens 14 and the right-eye lens 15 placed immediately before the left eye 17 and the right eye 18.
At this time, the left-eye lens 14 and the right-eye lens 15 have a function of directing the direction of the eyes of both eyes to the outside as will be described later. As a result, the left eye displays the image 12 for the left eye and the right eye. Can reasonably observe each of the right-eye images 13.

  Then, the two images observed with both eyes are synthesized in the head with the same pattern part overlapping, and if there is a slight misalignment in the left and right images, that part appears in front or back The image looks three-dimensional.

Next, the offset imaging mechanism and appearance of the 3D image appreciation system according to the present invention will be described with reference to FIG.
2A is an original scene, FIG. 2B is an imaging camera, and FIG. 2C is a view showing an appreciation system.
The imaging cameras (left) 21 and (right) 22 in FIG. 2B are installed at a distance of approximately the human eye width, and each image the original scene in FIG. The captured images are displayed on the left screen 23 and the right screen 24 in FIG. 5C directly or after being recorded and reproduced by a known recording device. In the displayed image, the viewer 25 observes the left screen 23 with the left eye and the right screen 24 with the right eye in the three-dimensional image viewing system. As shown in the imaging direction, the imaging camera (left) 21 is tilted to the left, and the imaging camera (right) 22 is tilted by a predetermined angle to the right. This tilted angle is called offset.

  When the left and right images are captured with an offset in this way, the image ranges do not match on the left and right, and the left-eye image is on the right, and the right-eye image is on the left Shift to. On the other hand, the left end portion that has not been captured so far enters the left eye image, and the right end portion that has not been captured so far enters the right eye image. Screens 23 and 24 in FIG. 2C show the state.

When viewing the left and right images captured with an offset in this way, the viewer fine-tunes the direction of the left and right gazes so that the same characteristic part of the pattern overlaps in the head from the left and right images To do. As a result, the image portion included in both the left and right images can be observed stereoscopically.
On the other hand, since the left end of the left eye image and the right end of the right eye image are only in one of the images, respectively, stereoscopic viewing is not possible in principle. If the image is continuous in such a part, a sense of depth is continuously felt, and even though only one of the images is present, the entire image can be observed stereoscopically without any sense of incongruity. It was. Therefore, this portion corresponds to the image range extending to the left and right.

Further, according to the observation of the present inventor, it has been found that it is visually preferable that the overlapping portion of the imaging range of the left and right images in the above is more than two-thirds of the whole. For this reason, in the three-dimensional image viewing system of the present invention in which the left and right images are offset, the displayable image range can be widened by 4/3 times as compared with the conventional case.

  Next, means for stably offsetting the imaging range of the left and right images will be described with reference to FIG. In FIG. 2B, the example in which two imaging cameras are used for offset imaging of the left and right images has been described. However, this method is inconvenient when panning or zooming the imaging camera. FIG. 3 shows a mechanism in which left and right images can be obtained with a single imaging camera, and offset imaging can be stably performed even during panning and zooming.

  FIG. 3 shows an imaging optical system for left and right images attached in front of the lens 35 of the imaging camera. In the figure, reference numerals 31, 32, 33, and 34 denote mirrors (reflecting mirrors) that bend incident light in the directions shown, and the distance between the mirrors 31 and 34 is set to be approximately the distance between human eyes. Further, the mirrors 32 and 33 are combined at right angles to each other, and each incident light is arranged side by side and combined into one, and functions to enter the lens unit 35 of the imaging camera.

Here, by turning the angles of the mirrors 31 and 34 slightly outward than 45 degrees, as shown in the figure, the incident light of the left and right images faces the outside, and offset imaging is possible.
If the state set in this way is fixed, an offset image can be stably acquired even if the imaging camera is panned or zoomed thereafter.
In this way, the left and right images can be offset with a single imaging camera.

  It should be noted that the image can be easily viewed by slightly correcting the angles of the mirrors 31 and 34 according to the amount of zooming, but in this case as well, the mirror is attached integrally with the imaging camera, so that the linked operation with the zooming of the imaging camera body is possible. Is possible.

Next, returning to FIG. 1, the structure and operation of the left-eye lens 14 and the right-eye lens 15 will be described. As shown in the figure, the left-eye lens 14 and the right-eye lens 15 respectively use a convex lens and a concave lens cut in half from the center. The convex lens has a lens center outside the viewer's eyes and a concave lens. They are placed so that the center is inside.
By looking through such a lens, the left-eye image 12 is shifted to the right, and the right-eye image 13 is shifted to the left. Originally, the left and right display images that are wider than the eye width are overlapped. Things that are difficult to handle can be superimposed without difficulty.

  Note that the power of the left-eye lens 14 and the right-eye lens 15 used in this embodiment is, for example, when the size of the display screen 11 is 21 inches, the convex lens is +3.0 dp (diopter), and the concave lens is −1. 0.0 dp, and the viewing distance at this time was 30 to 50 cm.

Next, a second embodiment of the present invention will be described with reference to FIGS.
The 3D image appreciation system according to the second embodiment of the present invention displays the left-eye image and the right-eye image captured with an offset side by side, and expands the viewing direction of the viewer's eyes. In the three-dimensional image viewing system that observes these images with corresponding eyes using dedicated glasses, the dedicated glasses are shielded from light at the center, and the light shielding amount gradually decreases toward the left and right ends. This is to use a light-shielding body having a boundary to be arranged in parallel with the binocular lens.

  In the first embodiment, the corresponding left-eye image 12 and right-eye image 13 are viewed through the left-eye lens 14 and the right-eye lens 15 shown in FIG. 1, respectively. If you are not used to it, the image on the opposite side can be seen through the gap between the two lenses or through the lens, making it difficult to see the screen. That is, the right end side of the image for left eye 12 is seen by the right eye and the left end of the image for right eye 13 is seen by the left eye, which overlaps with the regular three-dimensional image seen through the lens and interferes.

FIG. 4 shows a three-dimensional image appreciation system according to the second embodiment of the present invention using glasses for improving the above.
In this figure, a point that a light shielding plate 41 having a light shielding surface 42 having a width d between the viewer 16 and the glasses is arranged is different from that in FIG.
By installing this light shielding plate, the image on the opposite side can no longer be seen, and the above problem is solved.

FIG. 5 is a diagram showing a light transmission state of the light shielding plate 41. The light shielding plate is characterized in that the light shielding amount is gradually reduced by the width of the left end and the right end of the central light shielding surface 42 being a. It is in the point which provided the boundary which does. In this way, by gradually changing the amount of light shielding, the sudden appearance of the light shielding plate in the field of view can be reduced.
The width of a at the left end and the right end of the light shielding surface 42 is slightly different depending on the size of the display screen and the viewing distance, but has an optimum value in the range of 2 to 10 mm.

By using such a light-shielding plate, even an unfamiliar viewer can visually appreciate a good three-dimensional image without being disturbed by adjacent images and visually without the presence of the light-shielding plate. .
In this embodiment, the position of the light shielding plate 41 is between the viewer 16 and both lenses. However, it is obvious that the light shielding plate 41 may be arranged on the display screen side of both lenses.

It is a top view which shows the three-dimensional image appreciation system in the 1st Embodiment of this invention. It is a figure explaining the mechanism of 3D image appreciation by this invention. It is a top view of the optical system which picturizes the image for left eyes by the present invention, and the image for right eyes. It is the top view which showed the three-dimensional image appreciation system in the 2nd Embodiment of this invention. It is the front view which showed the light transmission of the light-shielding plate used for the 2nd Embodiment of this invention.

Explanation of symbols

11 .... Display screen, 12 .... Left eye image, 13 .... Right eye image, 14 .... Left eye lens, 15 .... Right eye lens, 16 .... Viewer, 17 .... Left eye, 18. ・ Right eye 21 ・ ・ Imaging camera (left), 22 ・ ・ Imaging camera (right), 23 ・ ・ Left screen, 24 ・ ・ Right screen, 25 ・ ・ Viewers 31, 32, 33, 34 ・ ・ Mirror 35 .. Lens part 41 of the imaging camera...

Claims (3)

It displays the left-eye and right-eye images parallel base, the observer and the right eye image and the left eye image is configured to be able to observe a 3-dimensional image using a glasses In the 3D image appreciation system,
Before texture Gane has left-eye lens unit and the right-eye lens,
The lens group for the left eye includes a convex lens in which the optical axis is offset to the left outer side of the viewer's left eye in a state where the viewer wears the glasses, and an optical axis that is outside the right side of the viewer's left eye. is configured in combination is a concave lens that is offset disposed in the side,
The right-eye lens group includes a convex lens in which the optical axis is offset to the right outside of the viewer's right eye in a state where the observer wears the glasses, and the optical axis is the left outer side of the viewer's right eye. It is configured by combining with a concave lens that is offset to
The light-shielding portion is arranged in parallel with the left-eye lens group and the right-eye lens group, and the light-shielding amount gradually decreases from the both end portions of the light-shielding portion toward the left and right ends. A three-dimensional image appreciation system comprising a light shielding body having a boundary portion . A three-dimensional image viewing tool for observing a left-eye image and a right-eye image displayed side by side as a three-dimensional image,
The three-dimensional image apparel includes a left eye lens group and a right eye lens group,
A light shielding portion disposed between the left-eye lens group and the right-eye lens group;
Have
The left-eye lens group and the right-eye lens group are each configured by combining a convex lens and a concave lens,
The convex lens in the left-eye lens group and the convex lens in the right-eye lens group are disposed so as to face each other with a thin portion of the lens as an inner end,
The concave lens in the left-eye lens group and the concave lens in the right-eye lens group are arranged so that the thin portions of the lenses face each other as inner ends,
The three-dimensional image appreciation tool, wherein the light-shielding part has a light-shielding amount reducing part that gradually reduces the light-shielding quantity toward the left and right ends on both ends of the light-shielding part. The left-eye image and the right-eye image are displayed side by side, and the displayed left-eye image and right-eye image are viewed as a three-dimensional image using the three-dimensional image viewing tool according to claim 2. A 3D image appreciation system characterized by being made possible.

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