JP2011008034A - Stereo viewer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To experience a stereographic image having a natural aspect ratio by means of a very simple method, without having to use an exclusive receiver.SOLUTION: A stereo viewer device includes a first optical unit 2 which leads the first picture light C of an image for the left eye to the left eye L of a user; a second optical unit 3, which leads the second picture light D of an image for the right eye to the right eye R of the user; and convergence angle-adjusting mechanisms 12 and 14 which adjust the convergence angles of the first picture light C and second picture light D. The first optical unit 2 has a first magnification-changing mechanism 11, which changes the magnification in a first direction Y of the first picture light C and the magnification in a second direction X of the first picture light C at a different ratio. The second optical unit 3 has a second magnification-changing mechanism 13, which changes the magnification in the first direction Y of the second picture light D and the magnification in the second direction X of the second picture light D, at a different ratio.

Description

  The present invention relates to a stereo viewer device that allows a user to experience two images displayed side by side using binocular parallax of a human left eye and right eye as a stereoscopic video.

  In recent years, broadcasting of 3D (stereoscopic) video has been put into practical use with the progress of broadcasting technology. The broadcast format of 3D video that has been put to practical use employs a so-called side-by-side method in which a normal image receiver displays a left-eye image and a right-eye image side by side on a television screen.

  In this side-by-side method, the horizontal width of the image for the left eye and the image for the right eye is compressed to ½ of the original width. For this reason, in order to view such a side-by-side video, it is necessary to use a dedicated receiver and polarizing glasses that double the image width and superimpose and display the two images.

  Currently, as a method for easily viewing 3D broadcasting without using a dedicated receiver, a method for viewing stereoscopic images using binocular parallax of a human using a stereo viewer device has been proposed (for example, Patent Document 1).

Here, referring to FIG. 11, a method for experiencing a stereoscopic image using a conventional stereo viewer apparatus will be described.
As shown in FIG. 11A, when a dedicated receiver is not used, the television screen 200 displays a left-eye image 201 on the left half and a right-eye image 202 on the right half. The conventional stereo viewer apparatus 100 includes a first optical unit 101 that guides the first video light C of the left-eye image 201 to the user's left eye L, and a second video light D of the right-eye image 202 that is the user's right eye. And a second optical unit 102 leading to R.

  Each of the first optical unit 101 and the second optical unit 102 has a mirror 103 that can adjust the angle. The angle of convergence is changed by manipulating the angle of the mirror 103.

  That is, the user appropriately adjusts the convergence angle by manipulating the angles of the two mirrors 103 mounted inside the stereo viewer device 100. As a result, the first video light C of the left-eye image 201 is guided to the left eye L, and the second video light D of the right-eye image 202 is guided to the right eye R. As a result, the left-eye image 201 and the right-eye image 202 are merged in front of the user, so that the user can experience a stereoscopic video as shown in FIG.

JP 11-295657 A

  However, as shown in FIG. 11A, when a dedicated receiver is not used, an image having a width S compressed from the original width 2S to ½ is displayed on the television screen. Furthermore, the conventional stereo viewer device cannot change the magnification of the compressed width. Therefore, as shown in FIG. 11B, the stereoscopic image when using the conventional stereo viewer device is compressed to S of 1/2 of the original width while the vertical width T is the same as the original length. It was extremely unnatural.

  In view of the above problems, an object of the present invention is to provide a stereo viewer apparatus that can experience a stereoscopic image with a natural aspect ratio in a very simple manner without using a dedicated receiver.

In order to solve the above-described problems and achieve the object of the present invention, the stereo viewer device of the present invention makes a user experience a stereoscopic image using binocular parallax of the left eye and the right eye.
The stereo viewer device includes a first optical unit that guides the first video light of the left-eye image to the user's left eye, and a second optical unit that guides the second video light of the right-eye image to the user's right eye. An optical unit and a convergence angle adjusting mechanism that adjusts the convergence angles of the first image light and the second image light are provided.
Then, the first optical unit sets the first image light in a ratio in which the magnification in the first direction orthogonal to the optical axis and the magnification in the second direction orthogonal to the optical axis and the first direction are different. A first magnification conversion mechanism to be changed is provided. In addition, the second optical unit sets the second image light in a different ratio between the magnification in the first direction orthogonal to the optical axis and the magnification in the second direction orthogonal to the optical axis and the first direction. A second magnification conversion mechanism to be changed is provided.

  According to the stereo viewer device of the present invention, the first magnification conversion mechanism and the second magnification conversion mechanism can convert the magnification of the image light in the first direction and the magnification in the second direction into different ratios. You can experience powerful 3D images. Furthermore, without using a dedicated receiver, it is possible to restore a natural aspect ratio of an image whose width is compressed by a very simple method so that a stereoscopic image can be experienced.

It is a top view which shows typically the stereo viewer apparatus concerning the 1st Example of this invention. It is a perspective view which shows the 1st magnification conversion mechanism of the stereo viewer apparatus concerning the 1st Example of this invention. It is explanatory drawing which shows the use condition of the stereo viewer apparatus concerning the 1st Embodiment of this invention. It is explanatory drawing which shows the principal part of the stereo viewer apparatus concerning the 1st Example of this invention. It is explanatory drawing which shows the image of the stereo image which can be experienced using the stereo viewer apparatus concerning the 1st Example of this invention. It is a schematic diagram which shows the stereo viewer apparatus concerning the 2nd Example of this invention. It is explanatory drawing which shows the principal part of the stereo viewer apparatus concerning the 2nd Example of this invention. It is a schematic diagram which shows the stereo viewer apparatus concerning the 3rd Example of this invention. It is explanatory drawing which shows the magnification conversion mechanism of the stereo viewer apparatus concerning the 3rd Example of this invention. It is a schematic diagram which shows the stereo viewer apparatus concerning 4 embodiment of this invention. FIG. 11A is a diagram illustrating a state in which the conventional stereo viewer device is used, and FIG. 11B is a diagram illustrating a stereoscopic image in the case where the conventional stereo viewer device is used. It is explanatory drawing which shows the image of an image | video.

Hereinafter, exemplary embodiments of the stereo viewer device of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure. The present invention is not limited to the following form.
The description will be given in the following order.
1. First embodiment example 1-1. Configuration example of stereo viewer apparatus 1-2. 1. Usage method of stereo viewer device Second embodiment example 3. FIG. 3. Third embodiment example Fourth embodiment

<1. First Embodiment>
1-1. Configuration Example of Stereo Viewer Device First, a stereo viewer device according to a first embodiment of the present invention (hereinafter referred to as “present example”) will be described with reference to FIGS.
FIG. 1 is a schematic diagram showing a stereo viewer device of this example, and FIG. 2 is a perspective view showing a lens unit according to the stereo viewer device of this example.

  The stereo viewer device 1 of this example is a device that allows a user to experience a stereoscopic video by using binocular parallax of a human left eye and right eye. As shown in FIG. 1, the stereo viewer device 1 of the present example includes a first optical unit 2, a second optical unit 3 arranged at a predetermined interval from the first optical unit 2, It comprises a housing 4 that houses one optical unit 2 and a second optical unit 3. In the stereo viewer device 1, a mirror adjustment operation unit 6 and a focus adjustment operation unit 7 are provided between the first optical unit 2 and the second optical unit 3.

  The first optical unit 2 is disposed on one side of the housing 4, and the second optical unit 3 is disposed on the other side of the housing 4. The first video light C of the left-eye image is guided to the user's left eye L by the first optical unit 2, and the second video light D of the right-eye image is transmitted to the user's left eye L by the second optical unit 3. Guided to the right eye R. The first optical unit 2 includes a first magnification conversion mechanism 11 and a first convergence angle adjustment mechanism 12. Similarly, the second optical unit 3 also has a second magnification conversion mechanism 13 and a second convergence angle adjustment mechanism 14.

  The first magnification conversion mechanism 11 and the second magnification conversion mechanism 13 are both made of the same member and have the same structure. Further, the first convergence angle adjustment mechanism 12 and the second convergence angle adjustment mechanism 14 also have the same structure. Therefore, here, the first magnification conversion mechanism 11 and the first convergence angle adjustment mechanism 12 of the first optical unit 2 will be described.

[Magnification conversion mechanism]
The first magnification conversion mechanism 11 includes a first lens 16 that is an objective lens, and a second lens 17 that is an eyepiece disposed behind the first lens 16 in the optical axis direction. Yes. As shown in FIG. 2, the first lens 16 is a cylindrical convex lens formed in a kamaboko shape. The second lens 17 is a cylindrical concave lens having a cylindrical refracting surface.

  The first lens 16 and the second lens 17 do not have a lens action in the first direction Y that is orthogonal to the optical axis of the first video light C, that is, in the vertical direction. The first lens 16 and the second lens 17 have a lens action with respect to the second direction X, ie, the lateral direction, orthogonal to the optical axis and the first direction Y. For this reason, the first magnification conversion mechanism 11 uses the first lens 16 and the second lens 17 to change the magnification in the first direction Y and the magnification in the second direction X to different ratios. The system is configured.

  The focal length of the first lens 16 is set to fa, and the focal length of the second lens 17 is set to fb. In this example, the magnification in the first direction Y in the first magnification conversion mechanism 11 is set to 1 time, and the magnification in the second direction X is set to 2 times fa / fb. Yes.

  Further, the second lens 17 moves so as to approach or separate from the first lens 16 along the optical axis direction by operating the focus adjustment operation unit 7. Thereby, the focus of the 1st optical unit 2 can be adjusted. The second lens 17 of the first optical unit 2 and the second lens 17 of the second optical unit 3 are moved closer to or away from the first lens 16 in synchronization by the focus adjustment operation unit 7. To do.

  However, the second lens 17 of the first optical unit 2 and the second lens 17 of the second optical unit 3 may be configured to move independently of each other. That is, a first focus adjustment operation unit for moving only the second lens 17 of the first optical unit 2 to approach or separate is provided, and only the second lens 17 of the second optical unit 3 is moved to approach or separate. A second focus adjustment operation unit may be provided.

[Convergence angle adjustment mechanism]
Referring back to FIG. 1, the first convergence angle adjusting mechanism 12 includes a first mirror 18 that reflects the first video light C, and the light reflected by the first mirror 18 as a first lens. 16 and a second mirror 19 that reflects to 16. The second mirror 19 is rotatably supported. The second mirror 19 is rotated by operating the mirror adjustment operation unit 6 to change the incident angle of the first video light C reflected by the first lens. Further, the angle of the second mirror 19 of the first convergence angle adjusting mechanism 12 changes in synchronization with the second mirror 19 of the second convergence angle adjusting mechanism 14.

  A mirror adjustment operation unit is provided for each of the second mirror 19 of the first convergence angle adjustment mechanism 12 and the second mirror 19 of the second convergence angle adjustment mechanism 14, and each of them is independently rotated. You may comprise so that it may move.

1-2. Method for Using Stereo Viewer Device Next, a method for using the stereo viewer device will be described with reference to FIGS.
FIG. 3 is an explanatory diagram showing a usage state of the stereo viewer device of this example. FIG. 4 is an explanatory diagram showing the main part of the stereo viewer device of this example, and FIG. 5 is an explanatory diagram showing an image of a stereoscopic video that can be experienced using the stereo viewer device of this example.

  First, the focus adjustment operation unit 7 is operated so that the focus of the first optical unit 2 is adjusted to the left eye L of the user, and the focus of the second optical unit 3 is adjusted to the right eye R of the user. adjust.

  Next, the mirror adjustment operation unit 6 is operated to fuse the image for the left eye enlarged by the first optical unit 2 and the image for the right eye enlarged by the second optical unit 3. Specifically, it is performed as follows.

  Here, as shown in FIG. 3, angles at which the entire left-eye image 201 can be visually recognized from the first optical unit 2 disposed close to the left eye L, that is, the left end C1 and the right end C2 of the left-eye image 201 and the first An angle formed by connecting the optical units 2 is θ. Further, the first video light C incident on the first optical unit 2 is magnified twice with respect to the second direction X by the first magnification conversion mechanism 11.

  Therefore, as shown in FIG. 4, the angle formed by connecting the left end E1 and right end E2 of the left eye recognition image 301 recognized by the user and the left eye L of the user is 2θ. As a result, the user recognizes the left-eye recognition image 301 obtained by magnifying the left-eye image 201 in the second direction X twice.

  Then, the angle of the second mirror 19 is operated by operating the mirror adjustment operation unit 6 so that the left end E1 of the left-eye recognition image 301 coincides with the left end C1 of the left-eye image 201 actually displayed on the television screen 200. Adjust. As a result, the user moves the right end E2 of the left eye recognition image 301 to the right along the second direction X, and the center O of the left eye recognition image 301 moves to the center of the television screen 200 arranged in front of the user. Feel like you did. As a result, the left-eye recognition image 301 that is doubled in the second direction X with respect to the left-eye image 201 is arranged in front of the user.

  Next, as with the left eye, the angle of the second mirror 19 of the second optical unit 3 is adjusted, and the right end of the right eye recognition image is matched with the right end of the right eye image 202 actually displayed on the TV screen 200. Let Thereby, the right eye recognition image is also positioned in front of the user. As a result, as shown in FIG. 5, the left-eye recognition image and the right-eye recognition image are fused, and the user can experience a stereoscopic image in which only the horizontal width is expanded to 2S.

  Here, the horizontal widths of the left-eye image 201 and the right-eye image 202 displayed on the television screen 200 are compressed to ½ of the original image. Therefore, the horizontal width of the stereoscopic video can be made equal to the original horizontal width, and the user can experience a natural stereoscopic image with the original correct aspect ratio.

  In this example, the example has been described in which the magnification in the first direction Y, which is the vertical width, is set to the same magnification, and the magnification in the second direction X, which is the horizontal width, is set to two times. is not. For example, the magnification in the first direction Y may be set to 2 times, and the magnification in the second direction X may be set to 4 times. Thereby, the user can experience a 3D image larger than the original display screen and can experience a more powerful 3D image.

  Note that the vertical width of the left-eye image and the right-eye image is the same as the original image, but the horizontal width is compressed to ½ of the original image, so the magnification in the second direction X is The magnification in the direction Y is preferably about twice. However, the objective can be achieved if the magnification in the second direction X including the error in the optical system is set in the range of 1.5 to 2.5 times the magnification in the first direction Y. Therefore, the user can experience a natural three-dimensional image with no sense of incongruity in the aspect ratio.

<2. Second Embodiment>
Next, a second embodiment of the stereo viewer apparatus according to the present invention will be described with reference to FIGS.
FIG. 6 is a schematic diagram illustrating a stereo viewer apparatus according to the second embodiment, and FIG. 7 is an explanatory diagram illustrating a main part of the stereo viewer apparatus according to the second embodiment.

  The difference between the stereo viewer device 21 according to the second embodiment and the stereo viewer device 1 according to the first embodiment is the configuration of the first and second convergence angle adjusting mechanisms.

  As shown in FIG. 6, in the stereo viewer device 21 according to the second embodiment, the first optical unit 22 and the second optical unit 23 are connected by a bellows-like connecting portion 25. A focus adjustment operation unit 27 is disposed between the first optical unit 22 and the second optical unit 23.

  The first optical unit 22 has a first magnification conversion mechanism 31, and the second optical unit 23 has a second magnification conversion mechanism 33. The first magnification conversion mechanism 31 includes a first lens 36 and a second lens 37. Similarly, the second magnification conversion mechanism includes a first lens 36 and a second lens 37.

  The first optical unit 22 is rotatably supported by the first rotation shaft 28. Similarly, the second optical unit 23 is rotatably supported by the second rotation shaft 29. The first rotation shaft 28 and the second rotation shaft 29 constitute a convergence angle adjusting mechanism.

  Other configurations are the same as those of the stereo viewer device 1 according to the first embodiment described above, and thus the description thereof is omitted. Also with the stereo viewer device 21 having such a configuration, the same operations and effects as the stereo viewer device 21 according to the first embodiment described above can be obtained.

  In addition, in the stereo viewer device 21 according to the second embodiment, a stereoscopic image can be experienced as follows. As shown in FIG. 7, the center of the first lens 36 and the second lens 37 constituting the first magnification conversion mechanism 31, that is, the optical axis is rotated for the left eye by rotating the entire first optical unit 22. Align with the left edge C1 of the image. As a result, the left end E1 of the left eye recognition image recognized by the user's left eye L can be matched with the left end C1 of the left eye image, and the left eye recognition image can be arranged in front of the user.

  Note that the operation of the second optical unit 23 is the same as that of the first optical unit 22, and therefore the description thereof is omitted. Thereby, a left eye recognition image and a right eye recognition image can be easily united, and a stereoscopic image can be easily experienced.

  According to the stereo viewer device 21 according to the second embodiment, the mirror can be omitted from the stereo viewer device according to the first embodiment. It is possible to reduce the number of parts compared to such a stereo viewer device.

<3. Third Embodiment>
Next, a third embodiment of the stereo viewer device of the present invention will be described with reference to FIGS.
FIG. 8 is a schematic diagram illustrating a stereo viewer apparatus according to the third embodiment, and FIG. 9 is an explanatory diagram illustrating a magnification conversion mechanism of the stereo viewer apparatus according to the third embodiment.
The stereo viewer device 41 according to the third embodiment uses prisms for the first magnification conversion mechanism and the second magnification conversion mechanism. Therefore, here, the first magnification conversion mechanism and the second magnification conversion mechanism will be described, and portions common to the stereo viewer device 1 according to the first embodiment will be denoted by the same reference numerals and description thereof will be given. Is omitted.

  As shown in FIG. 8, the stereo viewer device 41 according to the third embodiment includes a first optical unit 42 and a second optical unit 43. The first optical unit 42 includes a first magnification conversion mechanism 51 and a first convergence angle adjustment mechanism 12. The second optical unit 43 includes a second magnification conversion mechanism 53 and a second convergence angle adjustment mechanism 14. Since the first magnification conversion mechanism 51 and the second magnification conversion mechanism 53 have the same configuration, the first magnification conversion mechanism 51 will be described here.

The first magnification conversion mechanism 51 includes a first prism 56 and a second prism 57 disposed behind the first prism 56 in the optical axis direction. As shown in FIG. 9A, the first prism 56 and the second prism 57 each have the same apex angle θ ₁ .

The angle theta ₁ is set, for example, 32 °. Further, the angle θ ₂ between the first prism 56 and the second prism 57 is set to 52 °, for example. Further, the refractive indexes of the first prism 56 and the second prism 57 are set to 1.49, for example. At this time, the light incident on the first prism 56 in parallel with an interval of width A is emitted from the second prism 57 at an interval of width B of A / 2.

Under this condition, as shown in FIG. 9B, the first video light C incident on the first prism 56 at an angle θ _A is emitted from the second prism 57 at an angle θ _B , and To the left eye L. At this time, the relationship between the angle θ _A and the angle θ _B is θ _B / θ _A ≈2. Therefore, the left-eye recognition image recognized by the user is enlarged about twice in the second direction X from the left-eye image displayed on the television screen or the like.

  Further, when light passes through one prism, chromatic dispersion occurs, and the direction of the light beam changes and chromatic aberration occurs. Therefore, in this example, the first prism 56 and the second prism 57 are refracted in two stages, so that chromatic aberration caused by the refraction of the prism can be significantly suppressed. Note that chromatic aberration may be eliminated by using a known achromatic prism.

  Other configurations are the same as those of the stereo viewer device 1 according to the first embodiment described above, and thus the description thereof is omitted. Also with the stereo viewer device 41 having such a configuration, the same operations and effects as those of the stereo viewer device 1 according to the first embodiment described above can be obtained.

  The stereo viewer device 1 according to the third embodiment eliminates the need for a focus adjustment mechanism, and thus reduces the number of parts compared to the stereo viewer device 1 according to the first embodiment. It is possible to plan.

<4. Fourth Embodiment>
Next, a fourth embodiment of the stereo viewer apparatus of the present invention will be described with reference to FIG.
FIG. 10 is a schematic diagram showing a stereo viewer apparatus according to the fourth embodiment.

  The stereo viewer device 61 according to the fourth embodiment is obtained by changing the configuration of the convergence angle adjusting mechanism of the stereo viewer device 41 according to the above-described third embodiment. That is, as shown in FIG. 10, the first optical unit 62 and the second optical unit 63 constituting the stereo viewer device 61 according to the fourth embodiment are connected by a bellows-like connecting portion 65. Yes.

  Further, the first optical unit 62 is rotatably supported by a first rotation shaft 68. Similarly, the second optical unit 63 is rotatably supported by a second rotation shaft 69, and a convergence angle adjusting mechanism is provided by the first rotation shaft 68 and the second rotation shaft 69. It is composed.

  The stereo viewer device 61 according to the fourth embodiment is similar to the stereo viewer device 21 according to the second embodiment described above, and the entire first optical unit 62 and the second optical unit 63 are arranged. By rotating, the left eye recognition image and the right eye recognition image are fused. Thereby, the user can experience a stereoscopic image easily.

  Other configurations are the same as those of the stereo viewer device 41 according to the third embodiment described above, and thus the description thereof is omitted. Also with the stereo viewer device 61 having such a configuration, it is possible to obtain the same operations and effects as those of the stereo viewer device 1 according to the first to third embodiments described above.

  The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention described in the claims. For example, the interval between the first optical unit and the second optical unit may be adjusted so that the width of the left eye and the right eye of the user can be adjusted.

  In the above-described embodiment, an example in which the stereo viewer device of the present invention is used to experience a stereoscopic image displayed on a television screen has been described, but the present invention is not limited to this. For example, the stereo viewer device of the present invention may be used to visually recognize two left and right photographs taken at different positions on the same subject, so-called stereo photographs.

  1, 2, 41, 61 ... Stereo viewer device, 2, 22, 42, 62 ... first optical unit, 3, 23, 43, 63 ... second optical unit, 6 ... mirror adjustment operation unit, 7 ... focus Adjustment operation unit 11, 31, 51 ... first magnification conversion mechanism, 12 ... first convergence angle adjustment mechanism, 13, 33, 53 ... second magnification conversion mechanism, 14 ... second convergence angle adjustment mechanism, 16, 36 ... 1st lens, 17, 37 ... 2nd lens, 18 ... 1st mirror, 19 ... 2nd mirror, 28, 68 ... 1st rotating shaft, 29, 69 ... 2nd Rotating shaft 56 ... first prism 57 ... second prism 200 ... TV screen 201 ... left eye image 202 ... right eye image C ... first image light D ... second image light , L ... left eye, R ... right eye, Y ... first direction, X ... 2 directions

Claims (7)

In a stereo viewer device that allows a user to experience stereoscopic video using binocular parallax for the left eye and right eye,
The first video light of the image for the left eye is guided to the left eye of the user, and the first video light is scaled in the first direction orthogonal to the optical axis, the optical axis, and the first direction. A first optical unit having a first magnification conversion mechanism that changes the magnification in a second direction orthogonal to the first ratio to a different ratio;
The second video light of the right-eye image is guided to the right eye of the user, and the second video light is scaled in the first direction orthogonal to the optical axis, the optical axis, and the first direction. A second optical unit having a second magnification conversion mechanism that changes the magnification in the second direction orthogonal to the second ratio,
A convergence angle adjusting mechanism for adjusting a convergence angle of the first image light and the second image light;
A stereo viewer device comprising: The magnification in the second direction in the first magnification conversion mechanism and the second magnification conversion mechanism is set to be larger than the magnification in the first direction. Stereo viewer device. The magnification in the second direction in the first magnification conversion mechanism and the second magnification conversion mechanism is set to about twice the magnification in the first direction. The stereo viewer apparatus according to 2. The convergence angle adjustment mechanism includes:
A first convergence angle adjusting mechanism housed in the first optical unit, and a second convergence angle adjusting mechanism housed in the second optical unit,
The first convergence angle adjusting mechanism includes a first mirror that reflects the first image light, and a second mirror that reflects and rotates the light reflected by the first mirror. ,
The second convergence angle adjusting mechanism includes a first mirror that reflects the second image light, and a second mirror that reflects and rotates the light reflected by the first mirror. The stereo viewer device according to claim 1, wherein the stereo viewer device is provided. The congestion adjustment mechanism includes a first rotation shaft that rotatably supports the first optical unit, and a second rotation shaft that rotatably supports the second optical unit. The stereo viewer device according to any one of claims 1 to 3. The stereo viewer according to claim 1, wherein the first magnification conversion mechanism and the second magnification conversion mechanism are anamorphic optical systems including a plurality of cylindrical lenses. apparatus. The stereo viewer device according to any one of claims 1 to 5, wherein the first magnification conversion mechanism and the second magnification conversion mechanism are anamorphic optical systems using at least two prisms. .

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