JP2011149978A - Polarization glasses for stereoscopic vision - Google Patents

Abstract

An object of the present invention is to allow a viewer to observe a display image in a good state as a two-dimensional image under a situation where the degree of tilt of the observer's head is large and the display image cannot be viewed stereoscopically.
[Solution]
A pair of polarizing filters 3L and 3R for the right eye and left eye are rotatably supported on the glasses frame 2, and weights 7 are added to the outer peripheral portions of the pair of polarizing filters 3L and 3R. . A locking pin 9 is integrally provided on the outer periphery of the left-eye polarizing filter 3R. Limiting the rotation range of the locking pin 9 to the glasses frame 2 and limiting the clockwise and counterclockwise rotation operations from the reference rotation position of the polarizing filter 3R for the left eye within a predetermined allowable range. A pair of stoppers 10 and 10 are integrally provided. In a situation where the inclination of the observer's head is large and the displayed image cannot be viewed stereoscopically, the viewer is allowed to visually recognize only the left-eye image GL through the left-eye polarizing filter 3L.
[Selection] Figure 1

Description

  The present invention relates to stereoscopic polarizing glasses used for stereoscopic image observation by a polarization filter system.

  Video technology is becoming more and more important as a current information transmission means. High sense of reality is desired as a video technology. In order to achieve this, color, resolution, depth, or three-dimensionality are considered as major factors, and research is ongoing.

  A polarization filter method is known as a method for displaying a video (a still image or a moving image) as a stereoscopic video with a sense of depth. In the polarization filter method, stereoscopic vision polarizing glasses (displaying right and left images in which binocular parallax (left-right viewpoint shift) is ensured are displayed with polarized light having different polarization directions and polarizing filters having corresponding polarization directions ( In the following, the display image is observed simply with polarized glasses. That is, by causing the left and right eyes to separate and observe the left and right images, the viewer can perceive the display image as a stereoscopic image.

  In addition, the polarization filter method includes a method using linearly polarized light (hereinafter referred to as LP method) and a method using circularly polarized light (hereinafter referred to as CP method) for displaying left and right images. The LP method is excellent. However, in the LP method, when an observer using polarized glasses tilts his / her head, the separability of the image is significantly deteriorated. As a solution to this problem, for example, Patent Document 1 listed below describes polarized glasses having the following configuration.

  That is, in Patent Document 1 below, right-eye and left-eye polarizing filters (polarizing lenses) are rotatably attached to a spectacle frame, and weights are added to the outer peripheral portions of the respective polarizing filters, so that the observer's head. Polarized glasses that rotate each polarizing filter according to the inclination of the part are described. In such polarized glasses, each polarizing filter rotates by itself according to the tilt of the observer's head, so that the viewer can stereoscopically display the displayed image even when the head is tilted.

Japanese Patent Laid-Open No. 7-230060

  By the way, even in the above-described conventional polarizing glasses, if the tilt of the observer's head is increased to some extent, it is impossible in principle for the observer to stereoscopically display the display image. This is because when the observer's head tilt is increased to some extent, the difference between the viewpoint shift direction of the left and right images constituting the display image and the actual position shift direction of the retinal image in both eyes of the observer is large. This is because the depth cannot be perceived from the left and right images.

  However, the conventional polarizing glasses have the viewpoint tilted to the observer by rotating the polarizing filters for the right eye and the left eye even under the situation where the observer's head tilt is large and the display image cannot be stereoscopically viewed. The image for the right eye and the image for the left eye are simultaneously viewed. Therefore, in the conventional polarized glasses, there is a problem that, under a situation where the display image cannot be viewed stereoscopically, the observer cannot observe the display image as a normal two-dimensional image without a sense of depth in a good state. .

  The present invention has been made in view of such a conventional problem, and in a situation where the observer's head has a large degree of tilt and the display image cannot be stereoscopically viewed, the display image is observed in a good state as a two-dimensional image. It is an object to provide stereoscopic glasses for stereoscopic viewing that can be observed by a person.

  In order to solve the above problems, in the stereoscopic polarizing glasses according to the invention of claim 1, a pair of polarizing filters for the right eye and the left eye are rotatably supported by the glasses frame, In stereoscopic polarizing glasses in which a weight is added to each outer peripheral portion of a pair of polarizing filters, the glasses frame is restricted from rotating according to the inclination of the glasses frame in at least one of the pair of polarizing filters. The rotation restricting means is provided.

  Further, in the stereoscopic polarizing glasses according to claim 2, the rotation restricting means rotates clockwise and counterclockwise from a reference rotation position in at least one of the pair of polarizing filters. The rotation operation is limited to a predetermined allowable range.

  Further, in the stereoscopic polarizing glasses according to the invention of claim 3, the rotation restricting means is a movable side restricting portion provided integrally with an outer peripheral portion on one side of the pair of polarizing filters. And a fixed-side restricting portion that is provided integrally with the glasses frame and restricts a rotation range of the movable-side restricting portion that accompanies the rotation of the polarizing filter on either one side.

  In the stereoscopic polarizing glasses according to the fourth aspect of the present invention, the rotation restricting means is allowed to move in a predetermined direction from a reference rotation position on one side of the pair of polarizing filters. Rotation operation exceeding a permissible limit in a direction opposite to the predetermined direction from a reference rotation position on the other side of the pair of polarizing filters, and first rotation restricting means for prohibiting rotation operation exceeding the limit And a second rotation restricting means for prohibiting the rotation.

  In the stereoscopic polarizing glasses according to the fifth aspect of the present invention, the first rotation restricting means is provided in the first outer peripheral portion on one side of the pair of polarizing filters. The movable side restricting portion and the first movable side restricting portion provided integrally with the spectacle frame and rotated in a predetermined direction from a reference rotation position on one side of the pair of polarizing filters. A second fixed side restricting portion for restricting rotation, wherein the second rotation restricting means is a second movable side restricting portion provided integrally with the outer peripheral portion on the other side of the pair of polarizing filters. And the second movable-side regulating portion that is provided integrally with the glasses frame and that rotates in a direction opposite to the predetermined direction from a reference rotational position on the other side of the pair of polarizing filters. 2nd fixed side regulation which regulates rotation Characterized in that it comprises and.

  According to the present invention, it is possible to allow the observer to observe the display image as a two-dimensional image in a good state under a situation where the tilt of the observer's head is large and the display image cannot be stereoscopically viewed.

It is a front view of polarized glasses showing a 1st embodiment of the present invention. It is sectional drawing which shows the specific attachment structure of a polarizing lens. It is function explanatory drawing of the polarized glasses in 1st Embodiment. It is a front view of polarized glasses showing a 2nd embodiment of the present invention. It is function explanatory drawing of the polarized glasses in 2nd Embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)

  First, a first embodiment of the present invention will be described. FIG. 1A is a front view in which details of the polarizing glasses (stereoscopic polarizing glasses) 1 according to the first embodiment are omitted, and FIG. 1B is an enlarged view showing a main part of the polarizing glasses 1. . The polarized glasses 1 are used for observing a stereoscopic image by a polarization filter method, and more specifically, right eye and left eye images (hereinafter referred to as left and right images) constituting a display image. ) Corresponds to the LP method displayed by linearly polarized light.

  As shown in FIG. 1A, the polarized glasses 1 of the present embodiment are mainly composed of a glasses frame 2 and a pair of polarizing filters for left and right eyes (hereinafter referred to as right and left polarized light) attached to the glasses frame 2. This is called a filter.) 3L and 3R.

  The eyeglass frame 2 includes left and right rims (hereinafter referred to as left and right rims) 4L and 4R that respectively hold left and right polarizing filters 3L and 3R, a bridge 5 that connects the left and right rims 4L and 4R, The left and right temples 6L and 6R are attached to the rims 4L and 4R via hinges (not shown).

  The left and right polarizing filters 3L and 3R are plastic polarizing elements having polarization characteristics that convert natural light into linearly polarized light, and are rotatably attached to the left and right rims 4L and 4R. Further, weights 7 are integrally provided on the outer peripheral portions of the left and right polarizing filters 3L and 3R, and further, a locking pin 9 is integrally provided on the outer peripheral portion of the polarizing filter 3R for the right eye. Yes.

  FIG. 2 is a view showing a specific mounting structure of the left and right polarizing filters 3L and 3R and the left and right weights 7 and 7 in the polarizing glasses 1. That is, FIG. 2A is a cross-sectional view showing a cross section parallel to the right-eye polarizing filter 3R in the right half of the polarizing glasses 1, and FIG. 2B is along the AA line of FIG. It is sectional drawing.

  As shown in FIGS. 2B and 2A, a ball bearing 8 is fitted into the right rim 4R. A right-eye polarizing filter 3R is fitted into the rotatable inner ring 8a of the ball bearing 8, and a weight 7 is fixed to the front side of the inner ring 8a. With the above configuration, the right-eye polarizing filter 3R is rotatably supported by the right rim 4R, and the right-eye polarizing filter 3R and the weight 7 are integrated. Although not shown, the left-eye polarizing filter 3L is also rotatably supported by the left rim 4L via the ball bearing 8 in the same manner as the right-eye polarizing filter 3R.

  Therefore, in the polarizing glasses 1, when the glasses frame 2 is tilted (rotated in the left-right direction around the bridge 5), the left and right polarizing filters 3 </ b> L and 3 </ b> R are moved to the left and right by the weights of the left and right weights 7 and 7. It rotates counterclockwise or clockwise inside the rims 4L, 4R.

  Also, the left and right weights 7 and 7 are attached to the wheel 8a when the polarizing glasses 1 (glasses frame 2) are in the posture as a reference in the normal use state shown in FIG. 1A. It is set at a position where the polarization axis directions of 3L and 3R cross each other at an angle of 90 °. The reference posture in the polarizing glasses 1 is a posture in which a line connecting the centers (not shown) of the left and right polarizing filters 3L and 3R is horizontal.

  On the other hand, as shown in FIG. 2, a locking pin 9 is fixed to the inner ring 8 a of the ball bearing 8. The right rim 4R has a pair of stoppers 10 and 10 that limit a range (rotation range) in which the locking pin 9 can be rotated in accordance with the rotation of the polarizing filter 3R for the right eye to a predetermined range. Is protruding.

  Therefore, in the polarizing glasses 1, the right eye polarizing filter 3 </ b> R rotates clockwise and counterclockwise from the reference rotation position in the rotation range of the locking pin 9 shown in FIG. Is limited to a range of a constant angle θ. That is, in the right-eye polarizing filter 3 </ b> R, the locking pin 9 contacts either one of the pair of stoppers 10 and 10 in the counterclockwise and clockwise rotations from the reference position. Only rotation angles in the range (θ / 2) are allowed.

  That is, in this embodiment, the locking pin 9 functions as the movable side restricting portion of the present invention, and the pair of stoppers 10 and 10 functions as the fixed side restricting portion of the present invention. That is, the rotation restricting means of the present invention is constituted by the locking pin 9 and the pair of stoppers 10 and 10.

  In this embodiment, the left-handed and right-handed rotation angles (θ / 2) allowed for the right-eye polarizing filter 3 </ b> R are determined by the glasses frame 2 (the observer's head) when the polarizing glasses 1 are used. ) Is tilted in the left direction or the right direction, the tilt angle is set in advance so that the observer can stereoscopically view the display image.

  Further, as shown in FIG. 1, the left-eye polarizing filter 3L is not provided with the locking pin 9, and the left rim 4L is not provided with the pair of stoppers 10 and 10. Therefore, as for the polarizing filter 3L for the left eye, the rotation angle is not restricted in the same way as the conventional one, and it is counterclockwise or clockwise depending on the inclination angle of the spectacle frame 2 (observer's head). It is free to rotate.

  In the polarizing glasses 1 having the above configuration, the left and right polarizing filters 3L and 3R are rotatable with respect to the glasses frame 2, and the left and right polarizing filters 3L and 3R rotate by themselves according to the inclination of the observer's head. To do. Therefore, if the tilt angle of the head is within an allowable range, the left and right polarizations constituting the display image can be transmitted through the left and right polarizing filters 3L and 3R, and the display image can be viewed stereoscopically by the observer. Here, the tilt angle of the allowable range is an angle equal to the counterclockwise and clockwise rotation angles (θ / 2) allowed in the right-eye polarizing filter 3R described above.

  Furthermore, in the polarizing glasses 1, when the observer's head continues to tilt in the same direction beyond the allowable tilt angle, the left eye polarizing filter 3L continues without any restriction on the rotation angle. Rotates itself according to the tilt of the observer's head. On the other hand, the polarizing filter 3R for the right eye stops rotating when the tilt angle of the observer's head exceeds the allowable range, and thereafter the rotation position at that time is kept fixed. The

  Therefore, in a situation where the tilt angle of the observer's head exceeds the allowable range and the display image cannot be stereoscopically viewed, the polarization of the right-eye image constituting the display image is the right-eye polarization. It is blocked by the filter 3R. As a result, the observer can see only the left-eye video.

  FIG. 3 is an explanatory diagram specifically showing changes in the mechanical and optical states of the polarizing glasses 1 according to the inclination of the observer's head when the polarizing glasses 1 are used. It is a figure when 1 is seen from the observer side.

  That is, FIG. 3A is a diagram showing a state when the polarizing glasses 1 are in a reference posture. When in the reference posture, the polarizing glasses 1 allows the observer to visually recognize the left and right images GL and GR that constitute the display image via the left and right polarizing filters 3L and 3R, and allows the observer to stereoscopically view the display image. .

  FIG. 3B is a diagram illustrating the state of the polarizing glasses 1 when the observer's head is tilted to the left but the tilt angle is within an allowable range. As shown in FIG. 3B, if the tilt angle is within the allowable range, the polarizing glasses 1 allow the viewer to view the left and right images GL and GR that constitute the display image via the left and right polarizing filters 3L and 3R. Is maintained in a state of being visually recognized.

  FIG. 3C is a diagram showing the state of the polarizing glasses 1 after the observer's head is further tilted to the left and the tilt angle exceeds the allowable range. As shown in FIG. 3C, when the tilt angle exceeds the allowable range, the polarizing glasses 1 allow the observer to visually recognize only the left-eye video GL through the left-eye polarizing filter 3L. In addition, the right eye polarizing filter 3 </ b> R prevents the viewer from viewing the right eye video GL.

  On the other hand, FIG. 3D is a diagram showing the state of the polarizing glasses 1 when the observer's head is tilted to the right, but the tilt angle is within the allowable range. As shown in FIG. 3D, if the tilt angle is within the allowable range, the polarizing glasses 1 allow the viewer to view the left and right images GL and GR that constitute the display image via the left and right polarizing filters 3L and 3R. Is maintained in a state of being visually recognized.

  FIG. 3E is a diagram showing the state of the polarized glasses 1 when the observer's head is further tilted to the right and the tilt angle exceeds the allowable range. As shown in FIG. 3E, when the tilt angle exceeds the allowable range, the polarizing glasses 1 allow the observer to visually recognize only the left-eye video GL through the left-eye polarizing filter 3L. In addition, the right eye polarizing filter 3 </ b> R prevents the viewer from viewing the right eye video GL.

  As described above, in the polarizing glasses 1, the left-eye image that constitutes the display image under the situation where the tilt angle in the left-right direction exceeds the allowable range and the observer cannot stereoscopically view the display image. It is possible to make only the viewer visually recognize. Therefore, in a situation where the observer's head tilt degree is large and the display image cannot be stereoscopically viewed, the observer can observe the display image as a two-dimensional image in a good state.

  Here, in the present embodiment, the counterclockwise and clockwise rotation angles (θ / 2) allowed in the right-eye polarizing filter 3R are determined so that the observer's head is in the left direction or the right direction. The configuration has been described that matches the tilt angle of the head in a range in which the observer can stereoscopically view the display image even if the display image is tilted.

  However, the rotation angle allowed for the polarizing filter 3R for the right eye and the tilt angle of the head in the range in which the observer can stereoscopically view the display image do not necessarily have to coincide with each other. For example, the rotation angle allowed for the polarizing filter 3R for the right eye may be set to an angle slightly narrower than the tilt angle within the range in which the observer can stereoscopically view the display image. That is, the tilt angle may be set within a range in which the viewer can view the displayed video in a stereoscopic state.

  Further, the polarizing glasses 1 described in the present embodiment may be changed to a configuration that limits the rotatable range of the left-eye polarizing filter 3L to a predetermined angle instead of the right-eye polarizing filter 3R. Good. Even in that case, the same effect as the present embodiment can be obtained.

  Moreover, in this embodiment, the polarizing glasses 1 provided with the locking pin 9 as a function of the movable side restricting portion and provided with the pair of stoppers 10 and 10 as the function of the fixed side restricting portion have been described. .

  However, for example, a pair of stoppers 10, 10 are provided on the inner ring 8 a of the ball bearing 8, the pair of stoppers 10, 10 function as a movable side restricting portion, and a locking pin 9 is provided on the right rim 4 R. May be made to function as a fixed side restricting portion. Further, the rotation restricting means (movable side restricting portion and fixed side restricting portion) according to the present invention limits the rotatable range when the right-eye polarizing filter 3R is rotated by the weight of the weight 7 to a predetermined angle. As long as it can do, you may comprise by arbitrary components other than the locking pin 9 and a pair of stoppers 10 and 10. FIG.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. 4A is a front view in which details of the polarizing glasses (stereoscopic polarizing glasses) 51 in the second embodiment are omitted, and FIGS. 4B and 4C are main parts of the polarizing glasses 51. FIG. FIG.

  As shown in FIG. 4A, the polarization glasses 51 are used for stereoscopic image observation by the polarization filter method (LP method), like the polarization glasses 1 described in the first embodiment. The glasses frame 2 is composed of left and right polarizing filters 3L, 3R and weights 7,7. The details of the glasses frame 2, the left and right polarizing filters 3L and 3R, and the weights 7 and 7 are the same as those of the polarizing glasses 1, and therefore, the same parts are denoted by the same reference numerals and description thereof is omitted.

  Accordingly, also in the polarizing glasses 51, when the glasses frame 2 is tilted (rotated in the left-right direction around the bridge 5), the left and right polarizing filters 3L, 3R are moved to the left and right by the weights of the left and right weights 7, 7. It rotates counterclockwise or clockwise in the rims 4L, 4R.

  On the other hand, in the polarizing glasses 51 of the present embodiment, left and right locking pins (hereinafter referred to as left and right locking pins) 52L and 52R are integrally formed on the outer peripheral portions of both the left and right polarizing filters 3L and 3R. Is provided.

  The relationship between the left and right polarizing filters 3L and 3R and the left and right locking pins 52L and 52R is the same as that of the polarizing glasses 1 of the first embodiment. That is, the left and right locking pins 52L and 52R are fixed to the inner rings 8a (see FIG. 2) of the ball bearing 8 that rotatably support the left and right polarizing filters 3L and 3R, respectively. And integrated.

  The left rim 4L of the glasses frame 2 is provided with a left stopper 53L corresponding to the left locking pin 52L, and the right rim 4R of the glasses frame 2 corresponds to the right locking pin 52R. A right side stopper 53R is projected.

  The left and right locking pins 52L and 52R are separated from each other by a predetermined distance when the left and right stoppers (hereinafter referred to as the left and right stoppers) 53L and 53R are at the reference position shown in FIG. Placed in position. Note that the reference positions of the left and right stoppers 53L and 53R are the positions when the polarizing glasses 51 are in the reference posture in the normal use state.

  Therefore, in the polarizing glasses 51, the left eye polarizing filter 3L rotates clockwise (leftward in FIG. 4) from the reference rotation position, and the left locking pin 52L contacts the left stopper 53L. Limited to rotational position. That is, the polarizing filter 3L for the left eye restricts the clockwise rotation to a certain angle (θ / 2) corresponding to the rotation range in which the left locking pin 52L shown in FIG. Has been.

  In the polarizing glasses 51, the right eye polarizing filter 3R rotates counterclockwise (clockwise in FIG. 4) from the reference rotation position, and the right locking pin 52R contacts the right stopper 53R. Limited to rotational position. That is, the polarizing filter 3R for the right eye restricts the counterclockwise rotation to a certain angle (θ / 2) corresponding to the rotation range in which the right locking pin 52R shown in FIG. Has been.

  That is, in the polarizing glasses 51, the left and right locking pins 52L and 52R function as the first movable side restricting portion and the second movable side restricting portion of the present invention, and the left and right stoppers 53L and 53R of the present invention. It functions as a first fixed side restricting portion and a second fixed side restricting portion. That is, the left and right locking pins 52L and 52R and the left and right stoppers 53L and 53R constitute the rotation restricting means of the present invention.

  In the polarizing glasses 51, the clockwise rotation angle (θ / 2) allowed for the left-eye polarizing filter 3L and the counterclockwise rotation angle allowed for the right-eye polarizing filter 3R ( θ / 2) is set in advance to an inclination angle within a range in which the viewer can stereoscopically display the display image when the glasses frame 2 (observer's head) is tilted to the left when the polarizing glasses 51 are used. Has been.

  That is, the left-eye polarization filter 3L is prohibited from rotating beyond the allowable limit in the clockwise direction (one direction) from the reference rotation position, and the right-eye polarization filter 3R is rotated as a reference. Rotation operation exceeding the allowable limit in the counterclockwise direction (in the other direction) from the position is prohibited.

  Also in the polarizing glasses 51 having the above configuration, when used, if the tilt angle of the observer's head is within an allowable range, the left and right polarizing filters 3L and 3R transmit the polarized light of the left and right images constituting the display image. Thus, the viewer can stereoscopically view the display image. Here, the tilt angle of the allowable range is an angle equal to the clockwise or counterclockwise rotation angle (θ / 2) allowed for the left and right polarizing filters 3L and 3R described above.

  Furthermore, in the polarizing glasses 51, when the observer's head tilts to the left beyond the allowable tilt angle, the right-eye polarizing filter 3R continues to rotate according to the tilt of the observer's head. To do. At the same time, the polarizing filter 3L for the left eye stops rotating when the tilt angle of the observer's head exceeds the allowable range, and thereafter the rotation position at that time is fixed.

  Therefore, when the observer's head tilts leftward beyond the allowable tilt angle, the polarization of the left-eye image constituting the display image is blocked by the left-eye polarization filter 3L. As a result, the observer can see only the right-eye video.

  Further, in the polarizing glasses 51, when the observer's head tilts to the right beyond the allowable tilt angle, the left-eye polarizing filter 3R continues to rotate according to the tilt of the observer's head. To do. At the same time, the polarizing filter 3L for the right eye stops rotating when the tilt angle of the observer's head exceeds the allowable range, and thereafter the rotation position at that time is fixed.

  For this reason, when the observer's head is tilted rightward beyond the allowable tilt angle, the polarization of the right-eye image constituting the display image is blocked by the right-eye polarization filter 3R. As a result, the observer can see only the left-eye video.

  FIG. 5 is an explanatory diagram corresponding to FIG. That is, FIG. 5A is a diagram showing a state when the polarizing glasses 51 are in a reference posture.

  FIG. 5B shows the state of the polarizing glasses 51 when the observer's head is tilted to the left but the tilt angle is within the allowable range, and FIG. 5C shows the observer's head left. It is the figure which further inclined in the direction and showed the state of the polarized glasses 51 after the inclination angle exceeded the allowable range, respectively.

  FIG. 5D shows the state of the polarizing glasses 51 when the observer's head is tilted to the right but the tilt angle is within the allowable range. FIG. 5E shows the observer's head right. It is the figure which further inclined in the direction and showed the state of the polarized glasses 51 after the inclination angle exceeded the allowable range, respectively.

  As shown in FIGS. 5 (b) and 5 (d), even in the polarizing glasses 51, when the tilt angle is within the allowable range regardless of the tilt direction of the observer's head, The left and right images GL and GR constituting the display image are visually recognized through the polarizing filters 3L and 3R, and the viewer is made to stereoscopically view the display image.

  Then, as shown in FIG. 5C, when the observer's head is tilted leftward beyond the allowable range, the polarizing glasses 51 are placed on the right side through the right eye polarizing filter 3R. Only the eye image GR is visible, and the left eye polarization filter 3L prevents the viewer from viewing the left eye image GL.

  Further, as shown in FIG. 5E, when the observer's head is tilted to the right beyond the allowable range, the polarizing glasses 51 are left to the observer via the left eye polarizing filter 3L. Only the eye image GL is visible, and the right eye polarizing filter 3R prevents the viewer from viewing the right eye image GR.

  As described above, in the polarizing glasses 51, the image for the left eye that constitutes the display image under the situation where the tilt angle in the left-right direction exceeds the allowable range and the observer cannot stereoscopically view the display image. Or only one of the right-eye images can be visually recognized by the observer. Therefore, in a situation where the observer's head tilt degree is large and the display image cannot be stereoscopically viewed, the observer can observe the display image as a two-dimensional image in a good state.

  Here, in the present embodiment, the clockwise or counterclockwise rotation angle (θ / 2) allowed for the left and right polarizing filters 3L and 3R causes the observer's head to tilt leftward or rightward. However, the configuration that matches the tilt angle of the head in a range where the observer can stereoscopically view the display image has been described.

  However, the clockwise or counterclockwise rotation angle (θ / 2) allowed for the left and right polarizing filters 3L and 3R and the tilt angle inclination of the head within a range in which the observer can stereoscopically display the display image. The angle is not necessarily matched. For example, the clockwise or counterclockwise rotation angle (θ / 2) allowed for the left and right polarizing filters 3L and 3R is slightly narrower than the inclination angle of the range in which the observer can stereoscopically view the display image. An angle may be set. That is, the tilt angle may be set within a range in which the viewer can view the displayed video in a stereoscopic state.

  Further, the polarizing glasses 51 described in the present embodiment may be changed to a configuration in which the rotation direction for prohibiting the rotation operation exceeding the allowable limit in the left and right polarizing filters 3L and 3R is reversed. Even in that case, the same effect as the present embodiment can be obtained.

  In the present embodiment, left and right locking pins 52L and 52R are provided as functions of the first movable side restricting portion and the second movable side restricting portion of the present invention, and the first fixed side of the present invention is provided. The polarizing glasses 51 provided with the left and right stoppers 53L and 53R have been described as functioning as the restricting portion and the second fixed-side restricting portion.

  However, for example, the left and right locking pins 52L and 52R are provided on the left and right rims 4L and 4R to function as the first movable side restricting portion and the second movable side restricting portion, and the left and right stoppers 53L and 53R The polarizing filters 3L and 3R may be provided integrally so as to function as the first fixed side restricting portion and the second fixed side restricting portion of the present invention.

  Furthermore, the first rotation restricting means (first movable side restricting portion and first fixed side restricting portion) and the second rotation restricting means (second movable side restricting portion and second fixed) in the present invention. The side restricting portion) may be constituted by any component other than the left and right locking pins 52L and 52R and the left and right stoppers 53L and 53R. That is, the first rotation restricting means and the second rotation restricting means can be performed if the left and right polarizing filters 3L and 3R can be prohibited from rotating beyond the allowable limit from the reference rotation position in different directions. , It may be configured by an arbitrary component.

DESCRIPTION OF SYMBOLS 1 Polarized glasses 2 Glasses frame 3L Polarized filter for left eye 3R Polarized filter for right eye 4L Left rim 4R Right rim 7 Weight 8 Ball bearing 9 Locking pin 10 Stopper 51 Polarized glasses 52L Left locking pin 52R Right locking pin 53L Left side stopper 53R Right side stopper GL Left eye image GR Right eye image

Claims (5)

In the polarizing glasses for stereoscopic vision, a pair of polarizing filters for the right eye and the left eye are rotatably supported on the glasses frame, and weights are added to the outer peripheral portions of the pair of polarizing filters.
The polarizing glasses for stereoscopic vision, wherein the glasses frame is provided with rotation restricting means for restricting a rotation operation of at least one of the pair of polarizing filters according to the inclination of the glasses frame.   The rotation restricting means limits a clockwise and counterclockwise rotation operation from a reference rotation position within at least one of the pair of polarizing filters within a predetermined allowable range. The polarized glasses for stereoscopic vision according to claim 1. The rotation restricting means is
A movable side restricting portion integrally provided on an outer peripheral portion on one side of the pair of polarizing filters;
The fixed side restriction part which is provided integrally with the glasses frame and restricts the rotation range of the movable side restriction part accompanying the rotation of the polarization filter on either one side. Polarized glasses for stereoscopic viewing. The rotation restricting means is
A first rotation restricting means for prohibiting a rotation operation exceeding an allowable limit in a predetermined direction from a reference rotation position on one side of the pair of polarizing filters;
And a second rotation restricting means for prohibiting a rotation operation exceeding an allowable limit in a direction opposite to the predetermined direction from a reference rotation position on the other side of the pair of polarizing filters. The stereoscopic glasses for stereoscopic vision according to claim 1. The first rotation restricting means includes
A first movable side restricting portion integrally provided on an outer peripheral portion on one side of the pair of polarizing filters;
A first unit that is provided integrally with the eyeglass frame and regulates the rotation of the first movable side restricting unit in accordance with rotation in a predetermined direction from a reference rotation position on one side of the pair of polarizing filters. 1 fixed-side regulating section, and
The second rotation restricting means includes
A second movable-side regulating portion integrally provided on the outer peripheral portion on the other side of the pair of polarizing filters;
A rotation of the second movable side restricting portion that is provided integrally with the eyeglass frame and that rotates in a direction opposite to the predetermined direction from a reference rotation position on the other side of the pair of polarizing filters. 5. The polarizing glasses for stereoscopic vision according to claim 4, further comprising: a second fixed side restricting portion that restricts movement.

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