JP2012032616A - Spectacles for stereoscopic image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a simple and accurate adjustment of only a rotation of a visual axis within a horizontal plane.SOLUTION: Spectacles for stereoscopic image 100 include: a left-eye prism 110; a left object prism 112 disposed so as to place the center of the prism 112 on a left center axis 114 that is an axis going through the center of the left-eye prism; a right-eye prism 120 disposed on the right eye side; a right object prism 122 disposed so as to place the center of the prism 122 on a right center axis that is an axis going through the center of the right-eye prism; and a rotation mechanism 200 that rotates, in response to external force, the left-eye prism around the left center axis as a rotation axis; the left object prism in a direction reverse to and at the same rotation angle as the left-eye prism; the right-eye prism around the right center axis as a rotation axis in the same rotation angle and direction as the left-eye prism, or in the same rotation angle as and a direction reverse to the left-eye prism; and the right object prism in the same rotation angle as and a direction reverse to the right-eye prism.

Description

  The present invention relates to stereoscopic image glasses for perceiving a stereoscopic image.

  Conventionally, two left and right images (left-eye image and right-eye image) with horizontal parallax (binocular parallax) are arranged side by side in the horizontal direction, and the user (observer) There is a technique that allows a user to perceive a stereoscopic image by visually recognizing an image for the right eye with the right eye. This technique (autostereoscopic viewing) includes a parallel method and a crossing method.

  In the parallel method, an image for the left eye is placed on the left side and an image for the right eye is placed on the right side when viewed from the user, and the user's left eye axis (optical axis, line of sight) and right eye axis (optical axis, This is a method for allowing the user to perceive a stereoscopic image by setting the convergence point to infinity and aligning the focal point with the position of the image by making the line of sight) substantially parallel. In the intersection method, the right eye image is placed on the left side and the left eye image is placed on the right side when viewed from the user, and the user intersects the visual axis of the left eye and the visual axis of the right eye to determine the convergence point of the image. This is a method for allowing a user to perceive a stereoscopic image by bringing the focal point to the position of the image. When using such a parallel method and a crossing method, the user perceives a stereoscopic image by adjusting his / her visual axis to adjust the convergence point and further adjusting the focus.

  However, since it is not easy to adjust both the convergence point and the focus by the user's own power, the user has to train to some extent to perceive a stereoscopic image using the parallel method or the intersection method. Don't be. Even if training is performed, depending on the user, both the convergence point and the focus cannot be adjusted separately, and a stereoscopic image may not be perceived. In addition, it is the limit that a person has to make the visual axes of his left and right eyes parallel, and if the convergence angle (relative angle of the visual axis) of the two left and right images (left and right images) is not less than 90 degrees, the user Cannot perceive stereoscopic images.

  Therefore, stereoscopic glasses in which one prism is arranged on the left side of the glasses and one prism is arranged on the right side are disclosed (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2005-3824

  However, in the technique of Patent Document 1 described above, the convergence angle of the user is fixed to the refraction angle of the prism. Therefore, it is assumed that the stereoscopic image is perceived at the convergence point based on the refraction angle of the prism. In this case, the user cannot perceive a stereoscopic image. Further, when the image is fixed, the position at which the user can perceive the stereoscopic image by visually recognizing the image based on the refraction angle is limited.

  Therefore, in view of such a problem, the present invention provides stereoscopic image glasses that can easily and accurately adjust only the rotation of the visual axis in the horizontal plane according to the position of the image and the relative position of the user with respect to the image. The purpose is to provide.

(1) In order to solve the above-mentioned problem, the stereoscopic image glasses for perceiving a stereoscopic image according to the present invention are positioned on the left eye side of the user when the user wears the stereoscopic image glasses. The left eyeball prism and the left eyeball prism so that the center of the left eyeball prism is positioned on the left center axis, which is the side of the visual object to be viewed by the stereoscopic image glasses and passes through the center of the left eyeball prism. Left objective prism arranged, right eyeball prism arranged so as to be positioned on the right eye side of the user, and right eyeball that is closer to the visual recognition side than the right eyeball prism and is an axis passing through the center of the right eyeball prism The right objective prism arranged so that its center is located on the central axis, and the left eye prism is rotated about the left central axis as a rotation axis according to external force, and in the opposite direction at the same rotation angle as the left eye prism Left objective prism Rotate and rotate the right eye prism in the same direction at the same rotation angle as the left eyeball prism, or in the opposite direction at the same rotation angle, with the right central axis as the rotation axis, and at the same rotation angle as the right eyeball prism. A rotation mechanism that rotates the right objective prism in the direction, the left eyeball prism has a left eyeball plane that is perpendicular to the left center axis, and the right eyeball prism is perpendicular to the right center axis The left eyeball plane that is the intersection of the left eyeball plane with the axis parallel to the left center axis and passing through the position where the thickness of the left eyeball prism in the left center axis direction is the maximum. The right eyeball maximum point that is the intersection of the right eye plane and the point that passes through the point where the thickness of the right eyeball prism in the right center axis direction is maximum and is parallel to the right center axis, and the left eyeball prism left Where the thickness in the central axis direction is the smallest The left eyeball minimum point, which is the intersection of the axis parallel to the left center axis and the left eyeball plane, and the right eye axis prism where the thickness in the right center axis direction is minimum, and the right center axis. In a state where the parallel axis and the right eyeball minimum point that is the intersection of the right eyeplane plane are symmetrical with the left eyeball prism and the left objective prism, and the right eyeball prism and the right objective prism are plane symmetric , Located on the same plane including the left center axis or the right center axis, or on the same plane parallel to the left center axis or the right center axis.
(2) The left eyeball prism and the right eyeball prism are arranged so that the left eyeball plane and the right eyeball plane are located on substantially the same plane, and the left objective prism is a plane orthogonal to the left central axis. The left objective plane is formed, the right objective prism is formed with a right objective plane that is a plane orthogonal to the right central axis, and the left and right eyeball prisms are a left objective plane and a right objective plane. Are arranged on substantially the same plane, the left eyeball maximum point, the right eyeball maximum point, the left eyeball minimum point, and the right eyeball minimum point, the left eyeball prism and the left objective prism are plane-symmetric, In addition, the right eye prism and the right objective prism may be located on the same straight line in a state of being plane symmetric.
(3) Two lenses are further provided, and one of the two lenses is provided such that the optical axis of one lens is positioned on the left central axis, and the other lens of the two lenses is The other lens is provided so that the optical axis of the other lens is positioned on the central axis, and the two lenses are orthogonal to the line passing through the intersection of the left eyeball plane and the left central axis and the line passing through the intersection of the right eyeball plane and the right central axis. A lens that allows the user to visually recognize the target to be reduced in the direction of the line on the plane perpendicular to the left central axis and the right central axis, or the intersection of the left eye plane and the left central axis and the right eye plane It may be a lens that allows the user to visually recognize the object to be viewed in the direction of a line passing through the intersection of the right central axis and the right central axis.
(4) The left eyeball prism, the left objective prism, the right eyeball prism, and the right objective prism may be circular prisms whose outer edge shape is a circle.
(5) The left eye prism, left objective prism, right eye prism and right objective prism may have the same shape.
(6) You may provide the support mechanism which can attach or detach a lens.
(7) The left eyeball prism and the left objective prism are arranged so that the left eyeball plane and the left objective plane are opposed to each other, and the right eyeball prism and the right objective prism are arranged so that the right eyeball plane and the right objective plane are opposed to each other. And may be arranged.
(8) The rotation mechanism includes a left prism holding frame for fitting and holding the left eyeball prism and the left objective prism, a right prism holding frame for fitting and holding the right eyeball prism and the right objective prism, and an external force. Rotate either one of the left prism holding frames around the left center axis and one of the right prism holding frames around the right center axis in the same direction at the same rotation angle or in the opposite direction at the same angle. And a rotating part formed with a worm gear structure.
(9) The left flange portion, which is a flange formed to protrude from the outer peripheral end portion of the left prism holding frame in a direction orthogonal to the outer peripheral surface, or the outer peripheral end portion of the right prism holding frame protrudes in a direction orthogonal to the outer peripheral surface. A right flange portion that is a flange formed in this manner, and the outer periphery of the left flange portion or the right flange portion may be knurled.
(10) The rotation mechanism fits and holds the base frame, the left rail portion fixed to the base frame, the right rail portion fixed to the base frame, the left eyeball prism and the left objective prism, and A left prism holding frame having a left guide groove that is a guide groove provided along the right eyeball prism and a right objective prism are respectively fitted and held, and a right guide that is a guide groove provided along the outer periphery. A right prism holding frame having a groove, and the left prism holding frame is fitted with the left guide groove on the left rail so that the left prism holding frame can slide around the left central axis. The prism holding frame may be fitted with the right guide groove in the right rail so that the right prism holding frame can slide around the right center axis.
(11) The base frame side in the left central axis direction of the inner peripheral end portion of the left prism holding frame is extended to the base frame side from the boundary between the base frame and the left rail portion, and the inner peripheral end portion of the right prism holding frame is The base frame side in the right center axis direction may be extended to the base frame side from the boundary between the base frame and the right rail portion.
(12) The height of the left rail portion may be higher than the depth of the left guide groove, and the height of the right rail portion may be higher than the depth of the right guide groove.
(13) The left rail has a plurality of substantially semi-cylindrical protrusions that contact the outer periphery of the left guide groove, and the right rail has an approximately semi-cylindrical shape that contacts the outer periphery of the right guide groove. A plurality of protrusions may be provided, and the protrusions may be provided on the left rail part and the right rail part so that the longitudinal direction thereof is substantially parallel to the left center axis or the right center axis.
(14) The outer periphery of the left prism holding frame that holds the left eyeball prism, the outer periphery of the right prism holding frame that holds the right objective prism, the outer periphery of the left prism holding frame that holds the left objective prism, and the right eyeball that holds the right eyeball prism The base frame may further include a belt extending in the order of the outer periphery of the holding frame, and the base frame may be provided with a cutout portion through which the belt passes, and may have a cylindrical columnar portion along the edge of the cutout portion. .
(15) In order to make the outer periphery of the left prism holding frame and the right prism holding frame function as a pinion using the belt as a rack, the inner periphery of the belt and the outer periphery of the left prism holding frame and the outer periphery of the right prism holding frame are engaged with each other. Teeth may be formed.
(16) The straight line passing through the left eyeball maximum point, the intersection of the left eyeball plane and the left center axis, and the position where the thickness of the left objective prism in the left center axis direction is maximum, and parallel to the left center axis The angle between the left objective maximum point, which is the intersection of the axis and the left objective plane, and the straight line passing through the intersection of the left objective plane and the left central axis, or the right eyeball maximum point, the right eyeball plane, and the right center The right objective maximum point that is the intersection of the right objective plane and the axis that passes through the straight line passing through the intersection with the axis and the point where the thickness of the right objective prism in the right central axis direction is the maximum and parallel to the right central axis And an adjustment angle, which is an angle formed by a straight line passing through the intersection of the right objective plane and the right central axis, in the first angle range and the second angle range different from the first angle range. You may provide the range instruction | indication part which shows which is contained.
(17) The range indicating unit includes a protruding band that rotates in conjunction with either the left prism holding frame or the right prism holding frame, and a first index and a second index that are provided so as to be able to rotate about the fulcrum. An index, an elastic part that applies a force around the fulcrum to the first index and the second index, and a contact part that is connected to the first index and abuts against the outer periphery of the protruding band by the force around the fulcrum And the outer periphery of the protruding band is separated from the first outer peripheral portion separated from the rotation center of the protruding band by a first distance, and the second distance shorter than the first distance from the rotation center of the protruding band. The second outer peripheral portion, and the range instructing unit includes the contact angle when the adjustment angle is included in one of the first angular range and the second angular range. The first indicator is in contact with the first outer peripheral portion, and the first indicator protrudes more than the second indicator. When the adjustment angle is included in the other angle range so as to be located at a position away from the outer periphery of the belt, the contact portion is in contact with the second outer peripheral portion, and the second index However, it may be provided so as to be located at a position farther from the outer periphery of the protruding band than the first index.

  According to the stereoscopic image glasses of the present invention, it is possible to easily and accurately adjust only the rotation of the visual axis in the horizontal plane according to the position of the image and the relative position of the user with respect to the image.

It is explanatory drawing for demonstrating the external appearance of the spectacles for stereoscopic images concerning 1st Embodiment. It is explanatory drawing for demonstrating the relative positional relationship of a left eyeball prism, a left objective prism, a right eyeball prism, and a right objective prism. It is explanatory drawing for demonstrating the relative positional relationship of a left eyeball prism, a left objective prism, a right eyeball prism, and a right objective prism. It is explanatory drawing for demonstrating the relative positional relationship of a left eyeball prism, a left objective prism, a right eyeball prism, and a right objective prism. It is explanatory drawing for demonstrating rotation of a prism and rotation of the optical axis accompanying this. It is explanatory drawing for demonstrating rotation of a prism and rotation of the optical axis accompanying this. It is explanatory drawing for demonstrating rotation of a prism and rotation of the optical axis accompanying this. It is explanatory drawing for demonstrating the precision of a prism. It is explanatory drawing for demonstrating the shape of a left lens and a right lens. It is explanatory drawing for demonstrating an example of the rotation mechanism concerning 1st Embodiment. It is explanatory drawing for demonstrating an example of the rotation mechanism concerning 1st Embodiment. It is explanatory drawing for demonstrating an example of the rotation mechanism concerning 1st Embodiment. It is explanatory drawing for demonstrating an example of the rotation mechanism concerning 1st Embodiment. It is explanatory drawing for demonstrating the other example of the rotation mechanism concerning 1st Embodiment. It is explanatory drawing for demonstrating the range instruction | indication part concerning 1st Embodiment. It is explanatory drawing for demonstrating the specific structure of a range instruction | indication part. It is explanatory drawing for demonstrating the external appearance of the spectacles for stereoscopic images concerning 2nd Embodiment. It is explanatory drawing for demonstrating an example of the rotation mechanism concerning 2nd Embodiment. It is explanatory drawing for demonstrating the relationship between the left prism holding frame and left rail part concerning 2nd Embodiment, and the relationship between a right prism holding frame and a right rail part. It is explanatory drawing for demonstrating the other left prism holding frame, left rail part, right prism holding frame, right rail part, and base frame concerning 2nd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do. In each of the following embodiments, “rotation” has the same meaning as “rotation”. However, regarding rotation around the central axis of the prism and the holding frame, “rotation” means that the optical axis is perpendicular to the horizontal plane. The rotation around the axis will be described using “rotation”.

(Three-dimensional glasses 100 according to the first embodiment)
FIG. 1 is an explanatory diagram for explaining the appearance of the stereoscopic image glasses 100 according to the first embodiment. As shown in FIG. 1, the stereoscopic image glasses 100 include a left eyeball prism 110, a left objective prism 112, a right eyeball prism 120, a right objective prism 122, a left lens 130, a right lens 132, and a support mechanism 150. And the rotation mechanism 200. The left eyeball prism 110, the left objective prism 112, the right eyeball prism 120, and the right objective prism 122 are, for example, wedge prisms.

  2 to 4 are explanatory diagrams for explaining the relative positional relationship among the left eyeball prism 110, the left objective prism 112, the right eyeball prism 120, and the right objective prism 122. FIG. FIG. 2 shows a left center axis 114 that is an axis passing through the center of the left eyeball prism 110 (an axis corresponding to the visual axis of the left eye), and the right eyeball prism. When the stereoscopic image glasses 100 are viewed from vertically above when the posture is such that the right central axis 124 that is an axis passing through the center of 120 (an axis corresponding to the visual axis of the right eye) is parallel to the horizontal plane. The positional relationship among the left eyeball prism 110, the left objective prism 112, the right eyeball prism 120, and the right objective prism 122 (hereinafter simply referred to as a top view) is shown. Hereinafter, in the state in which the stereoscopic image glasses 100 are worn and the left center axis 114 and the right center axis 124 are in a posture parallel to each other in a horizontal plane, the vertical upper direction is simply referred to as “up” and the vertical lower direction is simply referred to as “lower”. Further, in the following embodiments, when describing stereoscopic image glasses with reference to the drawings, the orientation of the stereoscopic image glasses is determined by attaching the stereoscopic image glasses to the position of the user's eye unless otherwise specified. The posture is such that the central axis 114 and the right central axis 124 are parallel to each other on a horizontal plane. Unless otherwise specified, it is assumed that the user visually recognizes the visual recognition target (visual recognition target image) through the stereoscopic image glasses.

  As shown in FIG. 2, the left eyeball prism 110 is arranged so as to be positioned on the left eye side of the user when the user wears the stereoscopic image glasses 100. When the user wears the stereoscopic image glasses 100, the left objective prism 112 is more visually recognized by the stereoscopic image glasses than the left eye prism 110 (here, the image 102 (hereinafter, simply referred to as a visual target image). And the center of the left objective prism 112 is positioned on the left central axis 114. Thus, in the present embodiment, the left central axis 114 is an axis passing through the center of the left eyeball prism 110 and the center of the left objective prism 112.

  The right eyeball prism 120 is arranged so as to be positioned on the right eye side of the user when the user wears the stereoscopic image glasses 100. When the user wears the stereoscopic image glasses 100, the right objective prism 122 is closer to the viewing target image 102 than the right eye prism 120, and the center of the right objective prism 122 is positioned on the right central axis 124. Arranged. Thus, in the present embodiment, the right central axis 124 is an axis that passes through the center of the right eyeball prism 120 and the center of the right objective prism 122.

  As shown in FIG. 2, the left eyeball prism 110 is formed with a left eyeball plane 110a that is a plane orthogonal to the left center axis 114, and the right eyeball prism is a right eyeplane that is a plane orthogonal to the right center axis. 120a is formed. And as shown to Fig.3 (a), the left eyeball plane 110a and the right eyeball plane 120a are located on the same plane 104a. The left objective prism 112 is formed with a left objective plane 112a that is a plane orthogonal to the left central axis 114, and the right objective prism 122 is formed with a right objective plane 122a that is a plane orthogonal to the right central axis 124. Has been. As shown in FIG. 3B, the left objective plane 112a and the right objective plane 122a are located on the same plane 104b. Note that the left eye plane 110a and the right eye plane 120a are not necessarily located on the same plane 104a, but the design is easier if they are located on the same plane 104a. Further, the left objective plane 112a and the right objective plane 122a do not necessarily have to be located on the same plane 104b, but it is easier to design them if they are located on the same plane 104b.

  When one of the left eye prism 110, the left objective prism 112, the right eye prism 120, and the right objective prism 122 is rotated about the central axis of the prism, the rotation of the optical axis of the prism is within the horizontal plane. And the rotation component in a plane (hereinafter referred to as a vertical plane) that includes the central axis of the prism and that is orthogonal to the horizontal plane. Therefore, the combination of the left eyeball prism 110 and the left objective prism 112, or the combination of the right eyeball prism 120 and the right objective prism 122 (hereinafter simply referred to as two prisms) is used as the central axis of the prism (the left central axis 114 or When rotating in the opposite directions around the right central axis 124) at the same rotation angle, the rotation component in the vertical plane of the optical axis of one prism and the rotation component in the vertical plane of the optical axis of the other prism Will cancel each other. For this reason, the rotation of the optical axis is restricted within a horizontal plane (within one plane) by rotating the two prisms in the opposite directions around the central axis of the prism at the same rotation angle.

  In the prism, since the surface located on the eyeball side and the surface located on the viewing target image 102 side are not parallel, the above-described technology for restricting the rotation of the optical axis within one surface is used. In order to restrict the rotation of the optical axis within a horizontal plane in which the stereoscopic image glasses 100 are worn, four prisms are arranged as follows. 2 and 4A, the left eye prism 110 and the left objective prism 112 are plane-symmetric and the right eye prism 120 and the right objective prism 122 are plane symmetrical (reference state). , The left eyeball maximum point 116a, the left eyeball minimum point 116b, the right eyeball maximum point 126a, and the right eyeball minimum point 126b are positioned on the same straight line 106a, and the left objective maximum point 118a Left eye prism 110, left objective prism 112, right eye prism 120, and right objective prism 122 (so that the minimum objective point 118b, the maximum right objective point 128a, and the minimum right objective point 128b are located on the same straight line 106b. Hereinafter, simply referred to as four prisms).

  In the case where the left eye plane 110a and the right eye plane 120a are not positioned on the same plane 104a, and the left objective plane 112a and the right objective plane 122a are not positioned on the same plane 104b, In the reference state, the left eyeball maximum point 116a, the left eyeball minimum point 116b, the right eyeball maximum point 126a, and the right eyeball minimum point 126b are on the same plane including the left center axis 114 or the right center axis 124 (this embodiment). The left objective maximum point 118a, the left objective minimum point 118b, the right objective maximum point 128a, and the right objective minimum point 128b are positioned on the left central axis 114 or the right center. The left eye prism 110, the left objective prism 112, and the right eye prism are positioned on the same plane including the axis 124 (horizontal plane in the present embodiment). Placing 20 and right objective prism 122.

  Further, the left eye plane 110a and the right eye plane 120a are positioned on the same plane, and the left objective plane 112a and the right objective plane 122a are positioned on the same plane. In the above-described reference state, the left eyeball The maximum point 116a, the left eyeball minimum point 116b, the right eyeball maximum point 126a, and the right eyeball minimum point 126b are on the same plane (horizontal plane in the present embodiment) parallel to the left center axis 114 or the right center axis 124. The left eye prism 110, the left objective prism 112, the right eye prism 120, and the right objective prism 122 may be disposed so as to be positioned at the positions.

  Here, the left eyeball maximum point 116a is an intersection of the left eyeball plane 110a and an axis 114a that passes through the portion of the left eyeball prism 110 where the thickness in the direction of the left center axis 114 is maximum and is parallel to the left center axis 114. is there. The left eyeball minimum point 116b is an intersection of the left eyeball plane 110a and an axis 114b that passes through the portion of the left eyeball prism 110 where the thickness in the direction of the left center axis 114 is minimum and is parallel to the left center axis 114. The right eyeball maximum point 126a is an intersection of the right eyeball plane 120a and an axis 124a that passes through the portion having the maximum thickness in the direction of the right center axis 124 of the right eyeball prism 120 and is parallel to the right center axis 124. . The right eyeball minimum point 126b is an intersection of the right eyeball plane 120a and an axis 124b that passes through the portion of the right eyeball prism 120 where the thickness in the direction of the right center axis 124 is minimum and is parallel to the right center axis 124.

  The left objective maximum point 118a is an intersection of the left objective plane 112a and an axis 114a that passes through a portion where the thickness of the left objective prism 112 in the direction of the left central axis 114 is maximum and is parallel to the left central axis 114. The left objective minimum point 118b is an intersection of the left objective plane 112a and an axis 114b that passes through a portion where the thickness of the left objective prism 112 in the direction of the left central axis 114 is minimum and is parallel to the left central axis 114. The right objective maximum point 128a is an intersection of the right objective plane 122a and an axis 124a that passes through a portion where the thickness of the right objective prism 122 in the right central axis 124 direction is maximum and is parallel to the right central axis 124. The right objective minimum point 128b is an intersection of the right objective plane 122a and an axis 124b that passes through a portion where the thickness of the right objective prism 122 in the right central axis 124 direction is minimum and is parallel to the right central axis 124.

  A person correctly forms a three-dimensional image by visually observing two images for left and right eyes (left-eye image and right-eye image) generated to form a three-dimensional image with the corresponding eyes. Can be imaged. For example, in the parallel method, an image for the left eye is placed on the left side and an image for the right eye is placed on the right side when viewed from the user, and the user can move the left eye's visual axis (optical axis, line of sight) A stereoscopic image can be perceived by making the convergence point at infinity with the optical axis and line of sight being substantially parallel to each other, and adjusting the focus to the position of the image. On the other hand, in the intersection method, the right-eye image is placed on the left and the left-eye image is placed on the right when viewed from the user, and the user intersects the left eye's visual axis and the right eye's visual axis to converge points. A stereoscopic image can be perceived by placing the image in front of the image and adjusting the focus to the position of the image.

  As described above, regardless of whether the parallel method or the intersection method is used, two images (hereinafter, simply referred to as left and right images) are horizontally aligned on a plane orthogonal to the visual axis (optical axis, line of sight). Therefore, the user must adjust the relative angle (convergence angle) and the focal point in the horizontal plane of the visual axis of the left and right eyes separately. When using the parallel method, the user must make the visual axes of the left and right eyes substantially parallel and adjust the focus. Hereinafter, the case where the visual axis is substantially parallel is also referred to as a convergence angle, and the description thereof is omitted.

  However, since it is not easy to adjust both the convergence angle and the focus separately by the user's own power, the user has trained to some extent to perceive a stereoscopic image using the parallel method or the intersection method. There must be. Even if training is performed, depending on the user, both the convergence angle and the focal point cannot be adjusted, and the stereoscopic image may not be perceived. In addition, in the case of an image in which a person cannot perceive a three-dimensional image unless the eyes of the left and right eyes are parallel to each other and the angle of convergence is less than 0 degrees, the person cannot perceive. It is difficult to perceive stereoscopic images.

  Therefore, when the left eyeball prism 110 and the left objective prism 112 are rotated in the opposite directions around the left center axis 114 at the same rotation angle, the vertical optical axes of the left eyeball prism 110 and the left objective prism 112 are rotated. The optical axis does not rotate in the vertical direction, and the optical axis rotates only in the horizontal plane according to the rotation angle of the left eyeball prism 110 or the left objective prism 112. Similarly, when the right eyeball prism 120 and the right objective prism 122 are rotated in the opposite direction around the right center axis 124 at the same rotation angle, the vertical optical axes of the right eyeball prism 120 and the right objective prism 122 are rotated. Is offset, and the optical axis does not rotate in the vertical direction, and the optical axis rotates only in the horizontal plane according to the rotation angle of the right eyeball prism 120 or the right objective prism 122.

  FIG. 5 to FIG. 7 are explanatory diagrams for explaining the rotation of the prism and the rotation of the optical axis associated therewith, when the stereoscopic image glasses 100 are viewed from above. Further, in FIGS. 5 to 7, regarding the optical axis related to the left eyeball prism 110 and the left objective prism 112, the counterclockwise rotation with the vertical axis 134a as the rotation axis is positive. Further, in FIGS. 5 to 7, regarding the optical axes related to the right eyeball prism 120 and the right objective prism 122, the clockwise rotation with the vertical axis 134b as the rotation axis is positive. Here, a case where the refraction angle of each of the four prisms is 15 degrees will be described.

  For example, when the left objective minimum point 118b, the right objective minimum point 128b, the left eyeball maximum point 116a, and the right eyeball maximum point 126a shown in FIG. 5 are located on the same horizontal plane (also the left objective maximum point 118a and the right objective maximum). Point 128a, left eyeball minimum point 116b, and right eyeball minimum point 126b are located on the same horizontal plane), and an optical axis in the direction from the left objective prism 112 toward the visual recognition target image 102 (hereinafter simply referred to as the left optical axis). The optical axis in the direction from the right objective prism 122 toward the visual recognition target image 102 (hereinafter simply referred to as the right optical axis) is substantially parallel. In this case, the left eye of the user wearing the stereoscopic image glasses 100 visually recognizes the left-eye image 102a positioned on the left side when viewed from the user through the left eyeball prism 110 and the left objective prism 112, and the right eye Through the eyeball prism 120 and the right objective prism 122, the right-eye image 102b positioned on the right side when viewed from the user can be viewed. Therefore, if the left-eye image 102a and the right-eye image 102b are made to correspond to the parallel method with the convergence point set to infinity, the user wears the stereoscopic image glasses 100 and rotates the four prisms. By doing so, the stereoscopic image can be easily perceived simply by adjusting the stereoscopic image glasses 100 to a state corresponding to the parallel method.

  Then, from the state shown in FIG. 5, the left eyeball prism 110 and the left objective prism 112 are rotated in the opposite directions at the same rotation angle and around the left central axis 114, so that the right eyeball prism 120 and the right objective prism 122 are the same. The left objective minimum point 118b, the left objective maximum point 118a, the right objective maximum point 128a, and the right objective minimum point 128b shown in FIG. In addition, the left eyeball minimum point 116b, the left eyeball maximum point 116a, the right eyeball maximum point 126a, and the right eyeball minimum point 126b are arranged in this order in the same horizontal plane. That is, the left objective maximum point 118a and the right objective maximum point 128a face each other, and the left eyeball maximum point 116a and the right eyeball maximum point 126a face each other. Then, as shown in FIG. 6, the left optical axis and the right optical axis can be rotated +30 degrees in the horizontal plane (the relative angle of the optical axis in the horizontal plane at this time is 60 degrees). In this case, the left eye of the user wearing the stereoscopic image glasses 100 visually recognizes the left eye image 102a positioned on the right side when viewed from the user through the left eyeball prism 110 and the left objective prism 112, and the right eye Through the eyeball prism 120 and the right objective prism 122, the right-eye image 102b positioned on the left side when viewed from the user can be viewed. Therefore, if the left-eye image 102a and the right-eye image 102b are made to correspond to the intersection method in which the convergence point 136 is located on the user side of the visual recognition target image 102 and the convergence angle is 60 °, the user can By wearing the eyeglasses 100 and rotating the four prisms, a stereoscopic image can be easily perceived simply by adjusting the stereoscopic image glasses 100 to a state corresponding to the intersection method.

  Further, from the state shown in FIG. 6, the left eyeball prism 110 and the left objective prism 112 are further rotated around the left central axis 114 in the opposite direction at the same rotation angle, and the right eyeball prism 120 and the right objective prism 122 are rotated. The left objective maximum point 118a, the left objective minimum point 118b, the right objective minimum point 128b and the right objective maximum point 128a shown in FIG. In addition, the left eyeball maximum point 116a, the left eyeball minimum point 116b, the right eyeball minimum point 126b, and the right eyeball maximum point 126a are in this order in the same horizontal plane. That is, the left objective minimum point 118b and the right objective minimum point 128b face each other, and the left eyeball minimum point 116b and the right eyeball minimum point 126b face each other. Then, as shown in FIG. 7, the left optical axis and the right optical axis can be rotated by −30 degrees in the horizontal plane (the relative angle of the optical axis in the horizontal plane at this time is −60 degrees). It becomes. In this case, the left eye of the user wearing the stereoscopic image glasses 100 visually recognizes the left-eye image 102a positioned on the left side when viewed from the user through the left eyeball prism 110 and the left objective prism 112, and the right eye Through the eyeball prism 120 and the right objective prism 122, the right-eye image 102b positioned on the right side when viewed from the user can be viewed. In this case, the parallax of the user can be set to be equal to or greater than the distance between the left and right eyes of the user (interocular distance). Therefore, even if the left-eye image 102a and the right-eye image 102b have a parallax longer than the interocular distance so that the stereoscopic image cannot be formed with the naked eye by the parallel method, if the stereoscopic image glasses 100 are worn, The user can easily perceive stereoscopic images.

  In the state where the left eyeball prism 110 and the left objective prism 112 are plane symmetric and the right eyeball prism 120 and the right objective prism 122 are plane symmetric, the left eyeball maximum point 116a and the left eyeball minimum point 116b By configuring the stereoscopic image glasses 100 so that the right eyeball maximum point 126a and the right eyeball minimum point 126b are positioned on the same straight line 106a, the optical axis is rotated symmetrically in such a horizontal plane. Thus, the convergence angle can be adjusted, and the user can easily form a stereoscopic image by adjusting only the focus.

  Furthermore, since the relative angle of the optical axis of the stereoscopic image glasses 100 in the horizontal plane can be set to rotate up to −90 to 90 degrees depending on the refraction angle of each prism, the stereoscopic image glasses 100 can be rotated. Can correspond to both the parallel method and the intersection method. Also, by rotating the two prisms, the rotation of the optical axes of the two prisms in the horizontal plane can be adjusted, so that the rotation angle of the optical axis of the prism can be finely adjusted with respect to the amount of rotation of the prism, and the light The shaft can be adjusted with high accuracy.

  As shown in FIGS. 1 to 5, the left eyeball prism 110, the left objective prism 112, the right eyeball prism 120, and the right objective prism 122 are preferably circular prisms whose outer edge shape is a circle.

  The stereoscopic image glasses 100 of the present embodiment are configured to rotate two prisms in opposite directions around the central axis of the prism with respect to one eye. Therefore, by making the outer edge shapes of the four prisms into circles, the apparent outer edge shape does not change depending on the rotation angle, so that the rotation mechanism 200 can be easily formed. Also, by setting the outer edge shape of the two prisms to circles having the same radius, the effective area where the user can correctly form a stereoscopic image can be applied to the entire range of the circle. It becomes possible to eliminate the area.

  Also, the left eyeball prism 110, the left objective prism 112, the right eyeball prism 120, and the right objective prism 122 are preferably substantially the same shape. The reason will be described below.

  FIG. 8 is an explanatory diagram for explaining the accuracy of the prism. As shown in FIG. 8A, for example, when the user is made to perceive a stereoscopic image using the intersection method, the right-eye image 102b is displayed on the left as viewed from the user, and the right image is displayed on the left. The eye image 102a is arranged. Here, if there are variations in the refraction angles of the four prisms, the left eye prism 110 and the left objective prism 112, and the right eye prism 120 and the right objective prism 122 when the respective prisms are rotated by the same angle. Thus, the rotation of the optical axis in the vertical direction cannot be offset, and the optical axis is also rotated in the vertical direction. Therefore, when the user visually recognizes through the glasses for stereoscopic images in which the refraction angles of the four prisms vary, as shown in FIG. 8B, the left-eye image 102a and the right-eye image 102b are displaced in the vertical direction. Therefore, the user cannot correctly form a stereoscopic image.

  Therefore, by making the four prisms have the same shape, the errors in the refraction angles of all the prisms can be made equal, and variations in the refraction angles among the prisms can be suppressed. Thus, by rotating the respective prisms by the same angle, as shown in FIG. 8C, the rotation of the optical axis in the vertical direction is suppressed, and the left-eye image 102a and the right-eye image 102b are surely obtained. An image can be formed. Further, if the left eye prism 110, the left objective prism 112, the right eye prism 120, and the right objective prism 122 have the same shape, four prisms can be created with the same mold, and therefore the refraction angle for each prism. It is possible to reduce the manufacturing cost as well as to suppress the variation of the above. Further, since each prism only needs to be rotated by the same angle, the structure of the rotation mechanism 200 can be simplified.

  As illustrated in FIG. 1, the stereoscopic image glasses 100 include, for example, two lenses (a left lens 130 and a right lens 132) such as an anamorphic lens. That is, the two lenses (the left lens 130 and the right lens 132) are orthogonal to the line passing through the intersection of the left eyeball plane 110a and the left center axis 114 and the intersection of the right eyeball plane 120a and the right center axis 124. Thus, a lens (hereinafter simply referred to as a reducing lens) that causes the user to visually reduce the visual target image 102 in the direction of a line on a plane orthogonal to the left central axis 114 and the right central axis 124, or the left eyeball plane 110a. And a lens (hereinafter simply referred to as a magnifying lens) that causes the user to visually recognize the image 102 to be viewed in the direction of a line passing through the intersection of the left central axis 114 and the intersection of the right eyeball plane 120a and the right central axis 124. is there.

  Therefore, for example, in the stereoscopic image spectacles 100 in which the two lenses are reduced lenses, the left center axis 114 of the left eyeball prism 110 and the right center axis 124 of the right eyeball prism 120 are parallel to each other in a horizontal plane. In the posture, the reduction direction of the two lenses becomes the vertical direction, and the stereoscopic image glasses 100 in which the two lenses are formed of a magnifying lens are connected to the left center axis 114 of the left eyeball prism 110 and the right center of the right eyeball prism 120. When the shaft 124 is in a posture that is parallel to the horizontal plane, the magnification direction of the two lenses is the horizontal direction. The left lens 130 and the right lens 132 are attached to and detached from the support mechanism 150. Note that the left lens 130 and the right lens 132 shown in FIG. 1 are examples using reduction lenses.

  The left lens 130 and the right lens 132 will be described in detail with reference to FIG. FIG. 9 is an explanatory diagram for explaining the shapes of the left lens 130 and the right lens 132. In particular, FIG. 9A is a perspective view when the left lens 130 and the right lens 132 are magnifying lenses. FIG. 9B shows horizontal sectional views when the left lens 130 and the right lens 132 are magnifying lenses, respectively. 9C is a perspective view in the case where the left lens 130 and the right lens 132 are reduction lenses, and FIGS. 9D and 9E are the reduction lens in which the left lens 130 and the right lens 132 are reduction lenses. , A vertical sectional view including the left central axis 114 of the left lens 130 and a vertical sectional view including the right central axis 124 of the right lens 132 are respectively shown.

  As shown in FIGS. 9A and 9B, the left lens 130 is orthogonal to the horizontal plane including the optical axis 130 a of the left lens 130 on the left eyeball side of the user when the user wears the stereoscopic image glasses 100. Has a flat surface 130b. Similarly, the right lens 132 has a plane 132b orthogonal to the horizontal plane including the optical axis 132a on the right eyeball side of the user when the user wears the stereoscopic image glasses 100.

  A state in which the left lens 130 and the right lens 132 have a plane (130b or 132b) orthogonal to a horizontal plane including the optical axis (130a or 132a) of the lens, and the plane of the support mechanism 150 and the lens are flush (no step) And the aesthetic appearance of the support mechanism 150 and the lens can be improved.

  The surface 130c on the viewing target image 102 side of the left lens 130 is formed so that the shape of the cross section of any left section of the left lens 130 is convex toward the viewing target image 102 side. Similarly, the surface 132c of the right lens 132 on the viewing target image 102 side is formed so that the cross-sectional shape of the right lens 132 is convex toward the viewing target image 102 side in any horizontal section. In the case of a magnifying lens, the cross section of the left lens 130 is a rectangular shape when the cross section is a plane orthogonal to the plane 130b and orthogonal to the horizontal plane. Similarly, the cross section of the right lens 132 when the plane orthogonal to the plane 132b and the plane orthogonal to the horizontal plane is a cross section is a rectangular shape in any cross section. Then, the support mechanism 150 supports the left lens 130 and the right lens 132 so that the surface 130c and the surface 132c face the direction of the visual recognition target image 102. The support mechanism 150 also includes the left lens 130 and the right lens 130 so that the optical axis 132a of the right lens 132 and the right central axis 124 are aligned so that the optical axis 130a of the left lens 130 is aligned with the left central axis 114. The lens 132 is held.

  On the other hand, as shown in FIGS. 9C, 9 </ b> D, and 9 </ b> E, the left lens 130 has an optical axis of the left lens 130 on the left eyeball side of the user when the user wears the stereoscopic image glasses 100. It has the plane 130b orthogonal to the horizontal plane containing 130a. Similarly, the right lens 132 has a plane 132b orthogonal to the horizontal plane including the optical axis 132a on the right eyeball side of the user when the user wears the stereoscopic image glasses 100.

  The surface 130c of the left lens 130 on the viewing target image 102 side is perpendicular to the plane 130b and the plane perpendicular to the horizontal plane is a section, and in any section, the shape of the section is concave on the left eyeball side. Formed as follows. Similarly, the surface 132c of the right lens 132 on the viewing target image 102 side is perpendicular to the plane 132b and the plane orthogonal to the horizontal plane is a cross section. It is formed to become. In the case of a reduction lens, the horizontal cross sections of the left lens 130 and the right lens 132 are rectangular. Then, the support mechanism 150 supports the left lens 130 and the right lens 132 so that the surface 130c and the surface 132c face the direction of the visual recognition target image 102. The support mechanism 150 also includes the left lens 130 and the right lens 130 so that the optical axis 132a of the right lens 132 and the right central axis 124 are aligned so that the optical axis 130a of the left lens 130 is aligned with the left central axis 114. The lens 132 is held.

  As shown in FIG. 1, the support mechanism 150 is arranged so that the optical axis 132 a of the right lens 132 is positioned on the right central axis 124 so that the optical axis 130 a of the left lens 130 is positioned on the left central axis 114. The left lens 130 and the right lens 132 are supported.

  With the configuration in which the stereoscopic image glasses 100 include the left lens 130 and the right lens 132, the visual recognition target image 102 is enlarged in the horizontal direction (when an enlargement lens is used) or reduced in the vertical direction (vertical direction) (reduction). (When using a lens). Therefore, for example, for an image in which the aspect ratio is reduced only in the horizontal direction as in the side-by-side method, the aspect ratio can be returned to the original ratio, so even without performing special image processing, the user can Through the left lens 130 and the right lens 132, a side-by-side image can be perceived with the original aspect ratio.

  In addition, the configuration including the support mechanism 150 that allows the left lens 130 and the right lens 132 to be attached and detached allows the left lens 130 and the right lens only when viewing an image whose aspect ratio is reduced only in the horizontal direction, for example, in a side-by-side manner. When the lens 132 is attached and an image whose aspect ratio is not changed is visually recognized, the left lens 130 and the right lens 132 can be detached. Therefore, if the user wears the stereoscopic image glasses 100, the user can perceive a stereoscopic image through various images regardless of whether or not the aspect ratio of the image is changed.

  In the example shown in FIG. 9 described above, the left lens 130 and the right lens 132 have a plane (130b or 132b) orthogonal to the horizontal plane including the optical axis (130a or 132a) of the lens. For example, when the lens is a magnifying lens, both the surface on the eyeball side and the surface on the viewing target image 102 side are convex, or when the lens is a reduction lens, the surface on the eyeball side is also the viewing target image 102. Both side surfaces may be concave. With this configuration, the radius of curvature of the lens can be increased.

  In the present embodiment, the stereoscopic image glasses 100 are provided with the support mechanism 150 on the side of the visual object image 102 of the left objective prism 112 and the right objective prism 122, but the present invention is not limited thereto. A support mechanism 150 may be provided on the eyeball side of the right eyeball prism 120. In addition, support mechanisms 150 may be provided on both the visual target image 102 side and the eyeball side of the left eyeball prism 110 and the right eyeball prism 120.

(Rotating mechanism 200)
The rotation mechanism 200 rotates the left eyeball prism 110 around the left center axis 114 as a rotation axis according to the external force, and rotates the left objective prism 112 in the opposite direction at the same rotation angle as the left eyeball prism 110. The right eyeball prism 120 is rotated about the right center axis 124 as a rotation axis in the same direction at the same rotation angle as the eyeball prism 110, or in the reverse direction at the same rotation angle, and in the reverse direction at the same rotation angle as the right eyeball prism 120. The right objective prism 122 is rotated.

  10-13 is explanatory drawing for demonstrating an example of the rotation mechanism 200 concerning 1st Embodiment. In particular, FIGS. 10 and 12 are perspective views of the entire rotation mechanism 200, and FIGS. 11 (a) and 13 (a) show the rotation mechanism 200 viewed from the eyeball side with the stereoscopic image glasses 100 attached. FIGS. 11 (b) and 13 (b) show views of the rotation mechanism 200 from the view target image 102 side (hereinafter simply referred to as front view), respectively. Show. In FIG. 12, for easy understanding, illustration of a support mechanism that supports the base frame 202, the temple frame 204, and the rotation mechanism 200 is omitted.

  As shown in FIG. 10, the rotation mechanism 200 includes a base frame 202, a left prism holding frame 210 (indicated by 210a and 210b in FIGS. 10 to 12), and a right prism holding frame 220 (in FIGS. 10 to 12). 220a and 220b), a rotating part 230 (indicated by 230a and 230b in FIGS. 10 to 13), a connecting part 232, and an adjusting knob 234.

  The base frame 202 rotatably holds the left prism holding frame 210 and the right prism holding frame 220. The user wears the stereoscopic image glasses 100 by hooking (holding) the temple frame 204 on his / her ear. Note that the base frame 202 and the temple frame 204 may be integrally formed.

  The left prism holding frame 210a fits and holds the left eyeball prism 110, and the left prism holding frame 210b holds the left objective prism 112 by fitting. Similarly, the right prism holding frame 220a fits and holds the right eyeball prism 120, and the right prism holding frame 220b fits and holds the right objective prism 122.

  Here, the left prism holding frame 210 holds the left eyeball prism 110 and the left objective prism 112 so that the left eyeball plane 110a and the left objective plane 112a face each other, and the right prism holding frame 220 has a right prism holding frame 220. The right eyeball prism 120 and the right objective prism 122 are held so that the eyeball plane 120a and the right objective plane 122a face each other.

  As described above, the left eye prism 110 and the left objective prism 112, or the right eye prism 120 and the right objective prism 122 rotate the optical axis only in the horizontal plane. The prism 112 is attached to the base frame 202 so that the central axis of the prism 112 is coaxial (left central axis 114) and the central axis of the right eyeball prism 120 and the central axis of the right objective prism 122 are coaxial (right central axis 124).

  As can be understood with reference to FIGS. 2 to 4, the prism has a thick portion and a thin portion in the central axis direction. Here, when the left eyeball oblique plane 110b and the left objective oblique plane 112b are arranged to face each other, and the right eyeball oblique plane 120b and the right objective oblique plane 122b are arranged to face each other, a portion having a thick prism is obtained. The two prisms cannot be brought close to each other by the difference between the thin portions.

  Therefore, as shown in FIG. 1, the left prism holding frame 210 holds the left eye prism 110 and the left objective prism 112 so that the left eye plane 110a and the left objective plane 112a face each other with the base frame 202 therebetween. The right prism holding frame 220 is configured to hold the right eye prism 120 and the right objective prism 122 so that the right eye plane 120a and the right objective plane 122a face each other with the base frame 202 therebetween. The left eyeball prism 110 and the left objective prism 112 can be brought closer to each other, and the right eyeball prism 120 and the right objective prism 122 can be brought closer to each other so that the width is minimized. The thickness of the stereoscopic image glasses 100 in the direction of the left central axis 114 and the direction of the right central axis 124 can be reduced.

  As shown in FIGS. 10 and 11, the rotation mechanism 200 is configured to adopt a worm gear structure in which the left prism holding frame 210 and the right prism holding frame 220 are worm wheels and the rotating unit 230 is a worm. On the outer periphery of the prism holding frame 210 and the outer periphery of the right prism holding frame 220, teeth that mesh with the gears of the rotating unit 230 (to make the teeth and grooves match) are formed.

  The rotating unit 230 is configured by a screw gear (worm) and meshes with teeth formed on the outer periphery of the left prism holding frame 210 and the outer periphery of the right prism holding frame 220.

  10 and 11, the rotation mechanism 200 of the present embodiment rotates the left eyeball prism 110 and the left objective prism 112 in the opposite directions at the same rotation angle, and causes the right eyeball prism 120 to move to the left eyeball prism. 110, the right eye prism 120 and the right objective prism 122 are rotated in the opposite direction at the same rotation angle. Therefore, the rotation mechanism 200 connects the rotation unit 230a and the rotation unit 230b to rotate the rotation directions of the left eye prism 110 and the right eye prism 120 and the left objective prism 112 and the left objective prism 122 in the opposite directions. Further, a connecting part 232 is provided.

  As described above, the rotating mechanism 200 is configured with a worm gear structure in which the left prism holding frame 210 and the right prism holding frame 220 are worm wheels and the rotating portions 230a and 230b are worms, thereby rotating the connecting portion 232 (external force is reduced). The desired rotation can be obtained easily and reliably.

  In the rotation mechanism 200 of the present embodiment, the left prism holding frames 210a and 210b, the right prism holding frames 220a and 220b, the rotating units 230a and 230b, and the connecting unit 232 are engaged with each other. If any one of the group of the holding frames 210a and 210b, the right prism holding frames 220a and 220b, the rotating units 230a and 230b, and the connecting unit 232 is rotated, the other all rotate. However, considering the irreversible action of the worm gear structure, it is desirable to rotate one of the rotating portions 230a and 230b as shown in FIG. 10 and FIG. 11 (a).

  In the example shown in FIGS. 10 and 11, the example in which the rotating unit 230 is disposed between the left prism holding frame 210 and the right prism holding frame 220 has been described. However, the present invention is not limited to this, and FIGS. As shown in FIG. 6, the rotating unit 230 may be disposed above or below the left prism holding frame 210 and the right prism holding frame 220. 12 and FIG. 13, the desired rotation can be obtained as in FIGS.

  FIG. 14 is an explanatory diagram for explaining another example of the rotation mechanism 200 according to the first embodiment. FIG. 14 is a top view of the left prism holding frame 210 and the right prism holding frame 220 with the rotation mechanism 200 attached. In FIG. 14, the left eye prism 110, the left objective prism 112, the right eye prism 120, the right objective prism 122, the left lens 130, and the right lens 132 are omitted for easy understanding.

  As shown in FIG. 14, the stereoscopic image spectacles 100 includes a left flange portion 212a, which is a flange formed by protruding from the outer peripheral end portion of the left prism holding frame 210a in a direction orthogonal to the outer peripheral surface, and the left prism holding frame 210b. A left flange portion 212b that is a flange that protrudes from the outer peripheral end of the right prism in a direction orthogonal to the outer peripheral surface, and a flange that protrudes from the outer peripheral end of the right prism holding frame 220a in a direction orthogonal to the outer peripheral surface. A right flange portion 222a and a right flange portion 222b that is a flange formed to protrude from the outer peripheral end of the right prism holding frame 220b in a direction orthogonal to the outer peripheral surface. The outer circumferences of the left flange portions 212a and 212b and the right flange portions 222a and 222b are subjected to knurling which is a shallow cutting process for the purpose of preventing slipping.

  As described above, the configuration including the left flange portion 212 (indicated by 212a and 212b in FIG. 14) and the right flange portion 222 (indicated by 222a and 222b in FIG. 14) allows the user to use the left flange portion 212 or the right flange. If the part 222 is rotated, the four prisms can be rotated at the same rotation angle. In addition, with the configuration in which the outer circumference of the left flange portion 212 and the right flange portion 222 is knurled, when the user rotates the left flange portion 212 or the right flange portion 222 with a finger, the user's finger and the left flange portion 212 or the right It is possible to make the flange portion 222 difficult to slip, and it is possible to improve user convenience.

(Range instruction unit 250)
FIG. 15 is an explanatory diagram for explaining a range instruction unit according to the first embodiment. In the present embodiment, the rotation mechanism 200 further includes a range indicating unit 250 that indicates a rotation range around the central axis (the left central axis 114 or the right central axis 124). Here, it is assumed that the left eye prism 110 and the right objective prism 122 rotate counterclockwise when viewed from the rear, and the left objective prism 112 and the right eye prism 120 rotate clockwise when viewed from the rear.

In FIG. 15, the adjustment angle θ _L includes the left eyeball maximum point 116 a, a straight line 140 a (shown by a broken line in FIG. 15) passing through the intersection of the left eyeball plane 110 a and the left central axis 114, and the left objective maximum This is an angle formed by the point 118a and a straight line 140b (indicated by a one-dot chain line in FIG. 15) passing through the intersection of the left objective plane 112a and the left central axis 114. Further, the adjustment angle θ _R includes the right eyeball maximum point 126a, a straight line 142a (shown by a broken line in FIG. 15) passing through the intersection of the right eyeball plane 120a and the right central axis, the right objective maximum point 128a, This is an angle formed by a straight line 142b (indicated by a one-dot chain line in FIG. 15) passing through the intersection of the object plane 122a and the right central axis 124. The range instructing unit includes a first angle range and a first angle range in a rotation angle range in which the adjustment angle θ _L or the adjustment angle θ _R can rotate about the left central axis 114 or the right central axis 124. Which is included in the second angular range different from.

15A shows a case where the adjustment angle θ _L and the adjustment angle θ _R are 0 degrees, FIG. 15B shows a case where the adjustment angle θ _R is 90 degrees, and FIG. 15C shows a case where the adjustment angle θ _R is 180 degrees. 15 (d) shows the case of 270 degrees. Range indicator section, either or both of the adjustment angle theta _L or adjustment angle theta _R is either less than 0 degrees to 180 degrees, indicating less than 180 degrees and 360 degrees (0 degrees). Therefore, in the case where the adjustment angle θ _L and the adjustment angle θ _R are FIGS. 15 (a) and 15 (b), the range instructing unit is shown in FIGS. In the case of, it shows that it is 180 degree | times or more.

  FIG. 16 is an explanatory diagram for explaining a specific configuration of the range instruction unit 250. FIG. 16 is a rear view of the stereoscopic image glasses 100. As shown in FIG. 16, in the present embodiment, the range instruction unit 250 includes a protruding band 252 and an instruction unit 254.

  The protruding band 252 rotates in conjunction with either the left prism holding frame 210 or the right prism holding frame 220 (in this embodiment, the right prism holding frame 220a). Here, the protruding band 252 rotates in the same rotation angle and in the same direction as the right prism holding frame 220a, with the right central axis 124 as the rotation center. The outer periphery of the protruding band 252 is a first distance from the first outer peripheral portion 252a (indicated by hatching in FIG. 16) that is separated from the rotation center of the protruding band 252 by the first distance from the rotation center of the protruding band 252. A second peripheral portion 252b that is a second distance shorter than the second peripheral portion 252b.

  The indication unit 254 includes an elastic portion 254a, a contact portion 254b, a first index 254c, and a second index 254d, and a fulcrum 254e of the indication unit 254 itself is rotatably fixed to the base frame 202. Is done. In the indicating portion 254, the elastic portion 254a constituted by a torsion spring or the like is rotated clockwise in FIG. 16 around the fulcrum 254e with respect to the contact portion 254b, the first index 254c, and the second index 254d by elastic force. Power is applied (clockwise). As a result, the contact portion 254b comes into contact with the outer periphery of the protruding band 252 (contacts the contacted state). The contact portion 254b is connected to the first index 254c. The first index 254c and the second index 254d are provided so as to be able to rotate around the fulcrum 254e.

Then, when the adjustment angle (here, the adjustment angle θ _R ) is included in one of the first angle range and the second angle range, the range instructing unit 250 is in contact with the contact portion 254b. Are abutted against the first outer peripheral portion 252a, and the first index 254c is provided at a position farther from the outer periphery of the protruding band 252 than the second index 254d. In addition, when the adjustment angle (here, the adjustment angle θ _R ) is included in the other angle range, the range instructing unit 250 is in contact with the second outer peripheral portion 252b of the contact portion 254b. The second index 254d is provided at a position farther from the outer periphery of the protruding band 252 than the first index 254c.

  For example, as shown in FIG. 16 (a), when the contact portion 254b is in contact with the first outer peripheral portion 252a of the protruding band 252, the first index 254c of the indicating portion 254 is greater than the second index 254d. Is also located at a position away from the outer periphery of the protruding band 252. Then, as shown in FIG. 16B, when the right prism holding frame 220 rotates, the contact portion 254b changes from the first outer peripheral portion 252a of the protruding band 252 to the second outer peripheral portion 252b of the protruding band 252. The first index 254c is gradually immersed, and the second index 254d begins to project in a direction away from the outer periphery of the projecting band 252. Further, when the right prism holding frame 220 rotates, as shown in FIG. 16C, the contact portion 254b contacts the second outer peripheral portion 252b of the protruding band 252 and the second index 254d is the first index. It is located at a position farther from the outer periphery of the protruding band 252 than 254c.

Such a projecting strip 252, between the configuration with a range indication section 250 composed of an instruction section 254, the adjustment angle theta _L and adjustment angle theta _R is less than 0 degrees to 180 degrees (the first angle range) Or between 180 degrees and less than 360 degrees (second angle range) is associated with the first index 254c and the second index 254d of the instruction unit 254, the user can specify the instruction unit 254. The angle range between the optical axes of the left eyeball prism 110 and the left objective prism 112 and the optical axes of the right eyeball prism 120 and the right objective prism 122 can be determined by simply viewing the first index 254c and the second index 254d. You can grasp what is in the.

For example, when the adjustment angle theta _L and adjustment angle theta _R is 0 or more and less than 180 degrees (a first angle range), when the first index 254c protrudes, less than 180 degrees 360 degrees (second angular range), The range instruction unit 250 is configured so that the second index 254d protrudes.

When the adjustment angle θ _L and the adjustment angle θ _R are not less than 0 degrees and less than 180 degrees (first angle range), the relative angle of the left optical axis and the right optical axis gradually decreases from 60 degrees and becomes substantially parallel. (From the state shown in FIG. 6 to the state shown in FIG. 5) If characters, figures, etc. are attached and the first index 254c is used as an index indicating the crossing method, the user visually recognizes the first index 254c. It can be understood that the stereoscopic image glasses 100 are in a range suitable for the intersection method.

When the adjustment angle θ _L and the adjustment angle θ _R are 180 degrees or more and less than 360 degrees (second angle range), the left optical axis and the right optical axis are substantially parallel, and the relative angle is −60 degrees. (From the state shown in FIG. 5 to the state shown in FIG. 7) If characters and figures are attached and the second index 254d is used as an index indicating the parallel method, the user visually recognizes the second index 254d. It can be understood that the stereoscopic image glasses 100 are in a range suitable for the parallel method.

Further, the distance from the stereo-image glasses 100 to visually recognize the object image 102, in the case where the adjustment angle theta _L and adjustment angle theta _R is less than 0 degrees to 180 degrees (relative angle is positive) is also a parallel method The angle range of the index indicating the parallel method, which may be in a suitable state, may be set larger than the angle range of the cross method.

  Therefore, the user can immediately confirm whether the stereoscopic image glasses 100 are in a state suitable for the crossing method or a state suitable for the parallel method only by checking the range instruction unit 250. Therefore, the user rotates the left eye prism 110, the right objective prism 122, the left objective prism 112, and the right eye prism 120 while confirming the range instruction unit 250, so that the visual target image 102 based on the intersection method, and Any of the visual recognition target images 102 based on the parallel method can be immediately handled.

  As described above, according to the stereoscopic image glasses 100 according to the present embodiment, by using two prisms on the left and right sides, the vertical rotation of the optical axis by the prism can be reliably excluded and visually recognized. Since the rotation of the optical axis in the horizontal plane can be easily and accurately adjusted according to the position of the target image 102 and the relative position of the user with respect to the viewing target image 102, the user wears the stereoscopic image glasses 100. It is possible to adjust only the rotation of the own visual axis in the horizontal plane. Therefore, the user can perceive a stereoscopic image by autostereoscopic viewing of both the parallel method and the crossing method without special training.

Note that the second indicator 254d protrudes, so the first indicator 254c protrudes in the case of less than 180 degrees 360 degrees when the adjustment angle theta _L and adjustment angle theta _R is 0 or more and less than 180 degrees, the first index 254c May be configured as an index indicating the parallel method and the second index 254d as an index indicating the crossing method. In order to do this, the protruding band 252 may be attached to the prism while being shifted 180 degrees from the state described in FIG. 16, and the characters and figures described on the first index 254c and the second index 254b may be replaced.

(Second Embodiment: Stereoscopic Glasses 300)
FIG. 17 is an explanatory diagram for explaining the appearance of the stereoscopic image glasses 300 according to the second embodiment. In FIG. 17, the left lens 130, the right lens 132, and the support mechanism 150 are not shown for easy understanding. As shown in FIG. 17, the left eye prism 110, the left objective prism 112, the right eye prism 120, the right objective prism 122, the left lens 130, the right lens 132, the support mechanism 150, and the rotation mechanism 400 It is comprised including. Note that the left eye prism 110, the left objective prism 112, the right eye prism 120, the right objective prism 122, the left lens 130, and the right, which are substantially the same components as the stereoscopic image glasses 100 of the first embodiment described above. The description of the lens 132 and the support mechanism 150 will be omitted with the same reference numerals, and here, the rotation mechanism 400 having a configuration different from that of the first embodiment will be described in detail.

  FIG. 18 is an explanatory diagram for explaining an example of the rotation mechanism 400 according to the second embodiment. As shown in FIG. 18B, the rotation mechanism 400 includes a base frame 402, a temple frame 204, a left rail portion 404 (indicated by 404a and 404b in FIG. 18), and a right rail portion 406 (in FIG. 18). , 406a, 406b), a left prism holding frame 410, a right prism holding frame 412, and a belt 430. Since the temple frame 204, which has already been described as a component in the first embodiment, has substantially the same function, a duplicate description is omitted. 18A is an explanatory diagram for explaining the base frame 402 (the left side of FIG. 18A is a view of the base frame 402 viewed from the front side (viewing target side), and the right side is the base frame 402. FIG. 18B shows the relationship between the left rail portion 404 and the left prism holding frame 410, and the relationship between the right rail portion 406 and the right prism holding frame 412. FIG. 18C is an explanatory diagram for explaining, FIG. 18C is an explanatory diagram for explaining the relationship between the notch and the belt, and FIG. 18D is a relationship between the left prism holding frames 410 and 412 and the belt 430. FIG. 18 (e) shows a partial sectional view of the belt.

  As shown in FIG. 18A, the base frame 402 is fitted with a left rail portion 404 (indicated by 404a and 404b in FIG. 18) for fitting the left prism holding frame 410 and a right prism holding frame 412. Right rail portions 406 (indicated by 406a and 406b in FIG. 18) for joining are fixed.

  Also, as shown in FIGS. 18A to 18C, the base frame 402 is provided with a notch 408 through which the belt 430 passes. The edge of the notch 408 is a columnar column 408.

  The cutout portion 408 of the base frame 402 serves as a guide that prevents the belt 430 and the left prism holding frame 410 from coming off, and prevents the belt 430 and the right prism holding frame 412 from coming off.

  Further, as shown in FIG. 18C, the edge of the notch 408 can be a curved surface due to the configuration in which the edge of the notch 408 is a cylindrical portion 408a, and the notch 408 can be curved. The belt 430 that stretches the left prism holding frame 410 and the right prism holding frame 412 across the belt (passes in a state where tension is applied) slides on the edge of the notch portion 408, thereby damaging the belt 430. It becomes possible to reduce.

  The left rail portion 404 is fixed to the base frame 402 so as to be positioned at a position corresponding to the user's left eye when the user wears the stereoscopic image glasses 300. The left rail 404 has a plurality of substantially semi-cylindrical protrusions 414 that come into contact with the outer periphery of the left guide groove 420 of the left prism holding frame 410 described later. Similarly, the right rail portion 406 is fixed to the base frame 402 so as to be positioned at a position corresponding to the user's right eye when the user wears the stereoscopic image glasses 300. The right rail portion 406 includes a plurality of substantially semi-cylindrical protrusions 416 that come into contact with the outer periphery of a right guide groove 422 of a right prism holding frame 412 described later. Here, the protrusion 414 is provided on the left rail 404 so that its longitudinal direction is substantially parallel to the left central axis, and the protrusion 416 is such that its longitudinal direction is substantially parallel to the right central axis. The right rail portion 406 is provided.

  The protrusions 414 and 416 are so-called kamaboko-shaped semi-cylindrical shapes in which the vertical cross-sectional shape when wearing the stereoscopic image glasses 300 is a semicircular shape.

  The left prism holding frame 410a fits and holds the left eyeball prism 110, and the left prism holding frame 410b fits and holds the left objective prism 112. As shown in FIG. 18B, the left prism holding frame 410 has a left guide groove 420 that is a guide groove provided along the outer periphery. The left guide groove 420 and the protrusion 414 are fitted so that the left guide groove 420 can rotate while sliding with respect to the protrusion 414, so that the left prism holding frame 410 can move to the left central axis 114. It can be rotated around.

  Similarly, the right prism holding frame 412a fits and holds the right eye prism 120 and the right prism holding frame 412b fits and holds the right objective prism 122. The right prism holding frame 412 has a right guide groove 422 that is a guide groove provided along the outer periphery. The right prism holding frame 412 is fitted to the right central shaft 124 by fitting the right guide groove 422 and the protrusion 416 so that the right guide groove 422 can rotate while sliding with respect to the protrusion 416. It can be rotated around.

  18B and 18C, teeth that mesh with the belt 430 are formed on the outer periphery of the left prism holding frame 410 and the outer periphery of the right prism holding frame 412. Then, as shown in FIG. 18C, the belt 430 is stretched in the order of the outer periphery of the left prism holding frame 410a, the outer periphery of the right prism holding frame 412b, the outer periphery of the left prism holding frame 410b, and the outer periphery of the right prism holding frame 412a. Mount.

  When rotating the left prism holding frame 410 with respect to the left rail portion 404 or the right prism holding frame 412 with respect to the right rail portion 406, the left rail portion 404 and the right rail portion 406 are provided with the left rail portion 404 and the right rail. Providing the protrusion along the circumferential direction of the portion 406 can reduce friction between the left guide groove 420 and the protrusion and the right guide groove 422 and the protrusion due to the rotation. However, when such protrusions parallel to the circumferential direction are formed on the left rail part 404 and the right rail part 406, an assembly die is required, and it is difficult to obtain the precision of the protrusions, resulting in high costs. End up.

  Therefore, the structure that forms the kamaboko-shaped projections 414 and 416 as described above maintains the function as a rail, and the friction between the left guide groove 420 and the projection 414, and the right guide groove 422 and the projection 416. And can be easily formed with an inexpensive mold.

  FIG. 19 is an explanatory diagram for explaining the relationship between the left prism holding frame 410 and the left rail portion 404 and the relationship between the right prism holding frame 412 and the right rail portion 406 according to the second embodiment. In particular, FIG. 19 shows the posture of the stereoscopic image glasses 300 shown in FIG. 17 in which the stereoscopic image glasses 300 are attached to the user's eye position, and the left central axis 114 and the right central axis 124 are parallel in a horizontal plane. FIG. 6 is a partial horizontal cross-sectional view of the base frame 402, the left prism holding frame 410, the left rail portion 404, the right prism holding frame 412, and the right rail portion 406 in a posture like that. As shown in FIG. 19A, the left rail portion 404 is formed such that its own height hL is higher than the depth dL of the left guide groove 420, and as shown in FIG. The height hR of itself is formed higher than the depth dR of the right guide groove 422.

  With this configuration, the top portion of the left rail portion 404 (or the right rail portion 406) (the top surface of the left rail portion 404) and the bottom portion of the left guide groove 420 (or the right guide groove 422) (the bottom surface of the left guide groove 420). Since they can be brought into contact with each other, it is possible to avoid the left prism holding frame 410 from swinging (swaying) in the height direction of the rail. Further, since the height of the left rail portion 404 (or the right rail portion 406) is higher than the depth of the left guide groove 420 (or the right guide groove 422), the left prism holding frame 410 and the base frame 402 are brought into contact with each other. The left prism holding frame 410 can be smoothly rotated. Further, since there is no gap in the depth direction of the left guide groove 420, the left guide of dust or dust generated when the protrusion 414 (or the protrusion 416) slides on the outer periphery of the left guide groove 420 is left. It becomes possible to prevent the groove 420 (or the right guide groove 422) from entering the bottom.

  FIG. 20 is an explanatory diagram for explaining another left prism holding frame 410, a left rail portion 404, a right prism holding frame 412, a right rail portion 406, and a base frame 402 according to the second embodiment. In particular, FIG. 20 shows the posture of the stereoscopic image glasses 300 shown in FIG. 17 in which the stereoscopic image glasses 300 are attached to the position of the user's eyes, and the left central axis 114 and the right central axis 124 are parallel in the horizontal plane. FIG. 4 is a partial horizontal cross-sectional view of the base frame 402, the left prism holding frame 410, the left rail portion 404, the right prism holding frame 412, and the right rail portion 406 in such a posture.

  As shown in FIG. 20A, the base frame 402 side in the direction of the left central axis 114 at the inner peripheral end of the left prism holding frame 410 is closer to the base frame than the boundary between the base frame 402 and the left rail 404. On the side of 402, the base frame 402 is extended by half the thickness BD. Also, as shown in FIG. 20B, the inner peripheral end of the right prism holding frame 412 and the base frame 402 side in the direction of the right central axis 124 is more than the boundary between the base frame 402 and the right rail portion 406. The base frame 402 is extended by half the thickness BD of the base frame 402.

  With this configuration, the left prism holding frame 410a and the left prism holding frame 410b can be brought close to each other, and the right prism holding frame 412a and the right prism holding frame 412b can be brought close to each other. The thickness in the direction of the right central axis 124 can be reduced.

  By the way, as shown in FIG. 18E, the inner periphery of the belt 430 is engaged with the teeth formed on the outer periphery of the left prism holding frame 410 and the teeth formed on the outer periphery of the right prism holding frame 412. Grooves are formed.

  In this manner, the belt 430 is a rack, and the rotation mechanism 400 is configured with a pinion rack structure in which the left prism holding frame 410 and the right prism holding frame 412 are pinions, so that one belt 430 has four holding frames (left The prism holding frames 410a and 410b and the right prism holding frames 412a and 412b) can be interlocked, and the left eye prism 110 and the left objective prism can be easily and reliably rotated by simply rotating one of the four holding frames. 112 is rotated in the reverse direction at the same rotation angle, the right eye prism 120 is rotated in the reverse direction at the same rotation angle as the left eye prism 110, and the right eye prism 120 and the right objective prism 122 are rotated in the reverse direction at the same rotation angle. Can be rotated.

  Also in the stereoscopic image glasses 300 according to the present embodiment, by using two prisms on the left and right sides, the vertical rotation of the optical axis by the prism is surely eliminated, and the position of the viewing target image 102 and the viewing target Since only the rotation of the optical axis in the horizontal plane can be adjusted easily and with high accuracy in accordance with the relative position of the user with respect to the image 102, the user simply wears the stereoscopic image glasses 300, and the horizontal plane of the visual axis. Only the internal rotation can be adjusted. Therefore, the user can perceive a stereoscopic image by autostereoscopic viewing of both the parallel method and the crossing method without special training.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.

  The present invention can be used for stereoscopic image glasses capable of perceiving a stereoscopic image.

100, 300 ... Stereoscopic glasses 102 ... Visual target image 110 ... Left eye prism 112 ... Left objective prism 114 ... Left central axis 120 ... Right eye prism 122 ... Right objective prism 124 ... Right central axis 130 ... Left lens 132 ... Right Lens 150 ... support mechanism 200, 400 ... rotation mechanism 202, 402 ... base frame 210, 410 ... left prism holding frame 212 ... left flange part 220, 412 ... right prism holding frame 222 ... right flange part 230 ... rotating part 232 ... connection Part 234 ... Adjustment knob 250 ... Range indication part 252 ... Projection band 254 ... Instruction part 254a ... Elastic part 254b ... Contact part 254c ... First index 254d ... Second index 404 ... Left rail part 406 ... Right rail part 408 ... Cut Notch portions 414, 416 ... protrusion 420 ... left guide groove 422 ... right guide groove 4 0 ... belt

Claims (17)

3D image glasses for perceiving a 3D image,
A left eyeball prism arranged so as to be positioned on the left eye side of the user when the user wears the stereoscopic image glasses;
A left objective that is positioned closer to the visual target to be visually recognized by the stereoscopic image glasses than the left eyeball prism and is centered on a left center axis that is an axis passing through the center of the left eyeball prism. Prism,
A right eyeball prism arranged to be located on the right eye side of the user;
A right objective prism arranged such that its center is located on the right center axis, which is an axis passing through the center of the right eyeball prism, closer to the viewing object than the right eyeball prism;
In response to an external force, the left eyeball prism is rotated about the left center axis as a rotation axis, the left objective prism is rotated in the opposite direction at the same rotation angle as the left eyeball prism, and the same as the left eyeball prism. The right eye prism is rotated with the right central axis as a rotation axis in the same direction at the rotation angle or in the reverse direction at the same rotation angle, and the right objective prism is rotated in the reverse direction at the same rotation angle as the right eye prism. A rotating mechanism to rotate;
With
The left eyeball prism is formed with a left eyeball plane that is a plane orthogonal to the left central axis,
The right eyeball prism is formed with a right eyeball plane which is a plane orthogonal to the right central axis,
A left eyeball maximum point that is an intersection of an axis parallel to the left center axis and the left eyeball plane passing through a location where the thickness of the left eyeball prism in the left center axis direction is maximum; and the right eyeball prism A right eyeball maximum point that is an intersection of an axis parallel to the right center axis and the right eyeball plane, and the left center of the left eyeball prism. A left eyeball minimum point that is an intersection of an axis parallel to the left center axis through a portion having a minimum axial thickness and the thickness of the right eyeball prism in the right center axis direction The left eyeball prism and the left objective prism are plane-symmetric with respect to the right eyeball minimum point that is the intersection of the axis parallel to the right center axis and the right eyeball plane. And the right eyeball prism and the right objective prism are 3D image glasses characterized by being located on the same plane including the left central axis or the right central axis or on the same plane parallel to the left central axis or the right central axis in a symmetric state . The left eyeball prism and the right eyeball prism are arranged such that the left eyeball plane and the right eyeball plane are located on substantially the same plane,
The left objective prism has a left objective plane that is a plane orthogonal to the left central axis,
The right objective prism has a right objective plane that is a plane orthogonal to the right central axis,
The left eyeball prism and the right eyeball prism are arranged such that the left object plane and the right object plane are located on substantially the same plane,
The left eyeball maximum point, the right eyeball maximum point, the left eyeball minimum point, and the right eyeball minimum point are plane-symmetric with respect to the left eyeball prism and the left objective prism, and the right eyeball prism and the right eyeball 3. The stereoscopic image glasses according to claim 1, wherein the glasses are positioned on the same straight line in a state of being symmetrical with the objective prism. Two lenses,
One of the two lenses is provided such that the optical axis of the one lens is positioned on the left central axis,
The other lens of the two lenses is provided such that the optical axis of the other lens is positioned on the right central axis,
The two lenses are
A line perpendicular to the intersection of the left eyeball plane and the left central axis and a line passing through the intersection of the right eyeball plane and the right central axis, on a plane orthogonal to the left central axis and the right central axis A lens that allows the user to visually reduce the visual target in the direction of the line, or
It is a lens that enlarges the visual recognition target in the direction of a line passing through the intersection of the left eyeball plane and the left central axis and the intersection of the right eyeball plane and the right central axis, and makes the user visually recognize the lens. The stereoscopic image glasses according to claim 1 or 2.   4. The three-dimensional object according to claim 1, wherein the left eye prism, the left objective prism, the right eye prism, and the right objective prism are circular prisms having a circular outer edge shape. 5. Image glasses.   5. The stereoscopic image glasses according to claim 1, wherein the left eyeball prism, the left objective prism, the right eyeball prism, and the right objective prism have the same shape. 6.   The stereoscopic image glasses according to any one of claims 3 to 5, further comprising a support mechanism to which the lens can be attached and detached.   The left eyeball prism and the left objective prism are arranged so that the left eyeball plane and the left object plane are opposed to each other, and the right eyeball plane and the right object plane are opposed to each other. The stereoscopic glasses according to claim 1, wherein the right objective prism and the right objective prism are arranged. The rotation mechanism is
A left prism holding frame for fitting and holding the left eyeball prism and the left objective prism, and
A right prism holding frame for fitting and holding the right eyeball prism and the right objective prism, respectively;
Depending on the external force, either one of the left prism holding frames around the left central axis and one of the right prism holding frames around the right central axis in the same direction or at the same angle A rotating part formed with a worm gear structure that rotates in the opposite direction at
The stereoscopic image glasses according to any one of claims 1 to 7, characterized by comprising: A left flange portion, which is a flange formed so as to protrude from the outer peripheral end portion of the left prism holding frame in a direction orthogonal to the outer peripheral surface, or protrudes in a direction orthogonal to the outer peripheral surface from the outer peripheral end portion of the right prism holding frame. It has a right flange part that is a formed flange,
9. The stereoscopic image glasses according to claim 8, wherein a knurling process is performed on an outer periphery of the left flange portion or the right flange portion. The rotation mechanism is
A base frame,
A left rail portion fixed to the base frame;
A right rail portion fixed to the base frame;
The left eyeball prism and the left objective prism are respectively fitted and held, and a left prism holding frame having a left guide groove which is a guide groove provided along the outer periphery,
A right prism holding frame having a right guide groove which is a guide groove provided along the outer periphery, respectively fitting and holding the right eyeball prism and the right objective prism;
Have
The left prism holding frame is fitted with the left guide groove to the left rail portion so that the left prism holding frame can slide around the left central axis.
The right prism holding frame is configured such that the right guide groove is fitted to the right rail portion so that the right prism holding frame can slide around the right central axis. The stereoscopic image glasses according to any one of the above.   The base frame side of the inner peripheral end portion of the left prism holding frame in the left central axis direction is extended to the base frame side from the boundary between the base frame and the left rail portion, and the inner side of the right prism holding frame is 11. The stereoscopic image according to claim 10, wherein the base frame side of the peripheral end portion in the right central axis direction is extended to the base frame side with respect to a boundary between the base frame and the right rail portion. glasses.   The stereoscopic image according to claim 10 or 11, wherein a height of the left rail portion is higher than a depth of the left guide groove, and a height of the right rail portion is higher than a depth of the right guide groove. Glasses. The left rail portion has a plurality of substantially semi-cylindrical protrusions that contact the outer periphery of the left guide groove,
The right rail portion has a plurality of substantially semi-cylindrical protrusions that contact the outer periphery of the right guide groove,
The protrusions are provided on the left rail portion and the right rail portion so that the longitudinal direction thereof is substantially parallel to the left central axis or the right central axis. The stereoscopic image glasses according to claim 1. An outer periphery of the left prism holding frame for holding the left eyeball prism, an outer periphery of the right prism holding frame for holding the right objective prism, an outer periphery of the left prism holding frame for holding the left objective prism, and the right eyeball prism. A belt that stretches in the order of the outer periphery of the right eyeball holding frame to be held;
The base frame is provided with a notch through which the belt passes,
The stereoscopic image glasses according to any one of claims 10 to 13, further comprising a columnar columnar portion along an edge of the cutout portion.   In order for the belt to function as a rack and the outer periphery of the left prism holding frame and the right prism holding frame to function as a pinion, the inner periphery of the belt and the outer periphery of the left prism holding frame and the outer periphery of the right prism holding frame are mutually connected. The stereoscopic image glasses according to claim 14, wherein teeth that mesh with each other are formed. A straight line passing through the left eyeball maximum point and the intersection of the left eyeball plane and the left central axis;
A left objective maximum point that is an intersection of an axis parallel to the left central axis and a left objective plane that passes through a location where the thickness of the left objective prism in the left central axis direction is maximum, and the left objective plane And an angle formed by a straight line passing through the intersection with the left central axis, or
A straight line passing through the right eyeball maximum point and the intersection of the right eyeball plane and the right central axis;
A right objective maximum point that is an intersection of an axis parallel to the right central axis and a right objective plane that passes through a location where the thickness of the right objective prism in the right central axis direction is maximum, and the right objective plane And an adjustment angle that is an angle formed by a straight line passing through the intersection with the right central axis is included in any of the first angle range and the second angle range different from the first angle range. The stereoscopic image glasses according to any one of claims 1 to 15, further comprising a range instructing unit that indicates whether the image is to be displayed. The range instruction section
A protruding band that rotates in conjunction with one of the left prism holding frame and the right prism holding frame;
A first index and a second index provided so as to be able to rotate around a fulcrum;
An elastic portion that applies a force around the fulcrum to the first index and the second index;
A contact portion that is connected to the first index and that contacts the outer periphery of the protruding band by a force around the fulcrum;
An outer periphery of the protruding band is separated from a first outer peripheral portion that is separated from the rotation center of the protruding band by a first distance and a second distance that is shorter than the first distance from the rotation center of the protruding band. A second outer peripheral portion,
The range instruction section
When the adjustment angle is included in one of the first angle range and the second angle range, the contact portion is in contact with the first outer peripheral portion. When the first index is located at a position farther from the outer periphery of the protruding band than the second index and the adjustment angle is included in the other angle range, the contact portion And the second indicator is provided so as to be located at a position farther from the outer periphery of the protruding band than the first indicator. The stereoscopic image glasses according to 16.

Images