JP2011065017A - Glasses for image viewing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide glasses for image viewing which can be mounted on a proper position when used together with vision correction glasses, in the glasses for viewing an image. <P>SOLUTION: The glasses for image viewing includes: a frame part 102 which is provided with an opening for viewing the image displayed on a display device with right and left eyes, and is mounted on a head part of a user from above vision correction glasses; a temple part 112 which is attached to the frame part 102 and is retained onto side head parts of the user; and a nose pad part 110 which is disposed on the frame part 102, comes into contact with the nose of the user on the lower side than the nose pad part of the vision correction glasses, and is configured to be plastically deformable. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to image viewing glasses.

  Conventionally, in order to view stereoscopic images, a left-eye image and a right-eye image are displayed, and two polarizing plates with different polarization angles and two polarization states that can be switched alternately between left and right images. A glasses-type holder using a liquid crystal shutter is mounted on the head. In addition, a head mounted display device for viewing virtual reality or directly viewing a small liquid crystal panel image via an optical system such as a mirror has been generally known.

  For example, in Patent Document 1 below, a configuration is used in which the position of the pupil and the optical axis are measured by a nose pad (holding unit) that supports the spectacle frame by contacting the temple portion (ear-hanging portion) of the frame and the nose. Yes. In Patent Document 2, a slide mechanism for changing the temple width is provided on the upper part of the eyeglass-type holder, so that it is possible to cope with people with different head sizes and to enhance the wearing feeling.

  As for the nose pad portion, as described in Patent Document 3, most of the nose pads of a general eyesight correction spectacle frame are joined by brazing a thin pad arm to the rim portion, and the pad itself to be mounted There are some that can be replaced. The nose pad is fixed to the spectacle frame (rim part), and many are often used that are arranged on the upper part of the nose (near the eyes) without protruding from the outer shape of the lens frame. In Patent Document 4, a saddle-shaped shape is used for the nose pad portion, and this resinous attachment itself can be exchanged so that it can be inserted and removed.

JP 2001-305475 A JP-A-4-23581 JP 2007-240700 A JP 2006-91641 A

  However, the materials for general eyeglass frames and temples are often made of metal (nickel / titanium alloy or gold, shape memory alloy, etc.) or plastic (acetate material or super elastic resin). In order to perform plastic deformation, specialized skill, equipment and jigs are indispensable.

  In order to view stereoscopic images, the left-eye image and the right-eye image are displayed, and two polarizing plates with different polarization angles and two liquid crystals that can alternately switch the polarization state synchronized with the left and right images. It is necessary to wear a glasses-type holder with a shutter on the head. In order to be bundled as an accessory to the TV, a single eyeglass holder must be used for users with different head widths, from men to women, adults to children, including eyeglasses for vision correction. is required.

  In any of the above-described conventional techniques, it is not considered to deal with such various head sizes. In Patent Document 2, a temple width variable mechanism is provided for the width of the head. However, since weight reduction is also an issue, it is not preferable to provide a complex movable mechanism on the upper part of the spectacle holder. In addition, in the fitting (glasses adjustment) of a general eyesight correction eyeglass holder itself, a temple portion (ear hook) for a user with a different head width without a specialized expert engineer, a specialized device, or a jig. It is not considered that the user himself / herself performs fine adjustment of the shape with plastic deformation from the initial shape to the nose pad portion or the like. For head mounted eyeglass holders for viewing stereoscopic images, etc., there should be no consideration for use with eyesight correction eyeglass holders or for easy size adjustment for users with different head sizes. Is common.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to wear eyeglasses for visually recognizing images at appropriate positions when used together with eyesight correction glasses. It is an object of the present invention to provide a new and improved image viewing glasses capable of being used.

  In order to solve the above-described problems, according to an aspect of the present invention, an opening for visually recognizing an image displayed on a display device is provided with the left and right eyes. A frame part to be mounted; a temple part attached to the frame part and held on the user's temporal region; provided on the frame part; and below the nose pad part of the eyesight adjustment glasses. There is provided an image viewing eyeglass comprising a nose pad portion configured to come into contact with the nose and be plastically deformable.

  In order to solve the above-described problem, according to another aspect of the present invention, an opening for visually recognizing an image displayed on the display device with the left and right eyes is provided. A frame part attached to the head part, a temple part attached to the frame part and held on the user's side head part, and provided on the frame part so as to sandwich the user's nose from both sides. There is provided an image viewing spectacle that includes a nose pad portion that opens to a width of at least 12 mm at both ends.

  According to the present invention, glasses for visually recognizing images can be worn at appropriate positions when used together with eyesight correction glasses.

It is the top view which looked at the spectacles type liquid-crystal shutter holder from the upper side. It is a perspective view of a spectacles type liquid crystal shutter holder. It is a front view of a spectacles type liquid crystal shutter holder. It is a right view of a spectacles type liquid crystal shutter holder. It is the schematic diagram which expands and shows the state which looked at the eyeglass-type liquid-crystal shutter holder, and the state which removed the temple holder. It is a schematic diagram which shows the state which looked at the site | part by which the temple holder of a spectacles frame is mounted | worn from the inner side of the flame | frame. It is a schematic diagram for demonstrating the detail of the angle adjustment structure of a temple. It is a schematic diagram which shows the example which comprised the adjustment mechanism with the slide piece. It is a disassembled perspective view which shows the structure of a temple. It is a schematic diagram which shows the standard dimension which adapts to the eyesight adjustment glasses. It is a schematic diagram which shows the standard dimension which adapts to the eyesight adjustment glasses. It is a schematic diagram which shows the standard dimension which adapts to the eyesight adjustment glasses. It is a schematic diagram which shows the state which mounted | wore with the spectacles type liquid-crystal shutter holder. It is a schematic diagram which shows the state which mounted | wore with the spectacles type liquid-crystal shutter holder. It is a schematic diagram which shows the front surface and back surface of the periphery of the nose pad part of a spectacles type liquid-crystal shutter holder. It is a schematic diagram which shows the structure which does not have the mechanism which adjusts the opening amount of a nose pad part as a comparative example.

Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.
1. 1. Configuration example of shutter glasses 2. Temple angle adjustment structure About eyeglass fitting

[1. Example of shutter glasses configuration]
1 to 5 are schematic views showing a spectacle-type liquid crystal shutter holder (liquid crystal shutter spectacles) 100 according to the present embodiment. The glasses-type liquid crystal shutter holder 100 is attached to the head and used when viewing a display that displays a left-eye image and a right-eye image, and is used to view a 3D (stereoscopic) image. The eyeglass-type liquid crystal shutter holder 100 houses two polarizing plates having different polarization angles and two liquid crystal shutters capable of alternately switching the polarization state synchronized with the left and right images. The glasses-type liquid crystal shutter holder 100 houses an infrared detection unit that detects infrared rays transmitted from the display side, a driving circuit for the liquid crystal shutter, a battery for driving, and the like. Here, FIG. 1 is a top view of the glasses-type liquid crystal shutter holder 100 as viewed from above, and FIG. 2 is a perspective view of the glasses-type liquid crystal shutter holder 100. 3 is a front view of the glasses-type liquid crystal shutter holder 100, and FIG. 4 is a right side view of the glasses-type liquid crystal shutter holder 100.

  The eyeglass-type liquid crystal shutter holder 100 according to the present embodiment is configured so that the user can wear the eyesight correction glasses from above while wearing normal eyesight correction glasses. The glasses-type liquid crystal shutter holder 100 is configured so that it can be worn by adults and children corresponding to various head and face sizes. In the present embodiment, a saddle type shape is used for the nose pad portion 110 for supporting the spectacle frame, and an arrangement that does not interfere with the nose pad portion of the eyesight correcting glasses is selected. The nose pad portion 110 has a contact surface and an opening angle for contact with the nose near the center of the nose, and is combined with a temple width variable mechanism to provide an appropriate uniform weight even when used by users with different head widths. The structure can be applied to the part.

  FIG. 1 shows the entire spectacles-type holder 100, and both end portions (armor portions) of a spectacle frame 102 made of resin are formed with curved surfaces, and the frame end portions of the both end portions are temple holder portions 106 and hinges. Are connected through a section. The temple holder part 106 can be folded by a hinge part.

  A nose pad 110 is fixed to the spectacle frame 102. The nose pad portion 110 has a saddle shape and is in contact with the nose in the vicinity of the middle portion of the nose so as not to interfere with the nose pad portion of the eyesight correction glasses attached to the inside of the eyeglass-type liquid crystal shutter holder 100. It is said that. On the other hand, the nose pad portion of the eyesight correction glasses is generally in contact with the nose at the upper part of the nose (the position of the eye) where the right eye and the left eye are closest so as not to be exposed to the outside as much as possible. The material of the nose pad portion 110 is provided with a metal spring material such as stainless steel as a core material, and the surface is coated and molded with a soft resin. With such a configuration, the nose pad 110 is finely adjusted by applying a constant plastically deformable load so that the pad surface (contact inclined surface) for the nose and the pressure on the nose correspond to each individual user. It is possible to do the structure. Moreover, the nose pad part 110 has the function to maintain the stable mounting | wearing state while avoiding the press trace attached to a nose.

  The temple 112 is formed integrally with the temple holder 106, or is connected to the temple holder 106 with screws or the like. The material of the temple 112 has a structure in which a metal spring material such as stainless steel is disposed inside as a core material, and the shape of the temple end (near the modern part) that hits the back of the head or the ear can be finely adjusted. In the present embodiment, it is possible to increase the wearing feeling by using a rough change of the temple width by a rotating ratchet mechanism or the like, which will be described later, and a fine adjustment by the user himself / herself.

[2. Temple angle adjustment structure]
Next, the temple angle adjustment structure will be described. FIG. 5 shows an enlarged view of the eyeglass-type liquid crystal shutter holder 100 together with a perspective view of the eyeglass-type liquid crystal shutter holder 100 with the temple holder 106 removed. FIG. 6 shows a state in which the portion of the spectacle frame 102 to which the temple holder 106 is attached is viewed from the inside of the frame 102.

  As shown in FIG. 5, a columnar turning member 114 is attached to the temple holder 106, and the turning member 114 is configured to be rotatable about the central axis thereof. Further, as shown in FIG. 6, a groove (concave portion) 116 is provided at a position corresponding to the rotating member 114 at a portion where the temple holder 106 of the spectacle frame 102 is mounted. As shown in FIG. 6, the groove 116 is provided in an arc shape with respect to the rotation center of the rotation member 114, and the groove 116 having the same shape is positioned 180 degrees opposite to the rotation center of the rotation member 114. Two places are provided. Further, the depth of the groove 116 is configured to change stepwise along the circumferential direction of the arc.

  FIG. 7 is a schematic diagram for explaining the details of the temple angle adjustment structure. Here, FIG. 7A is a perspective view showing a connecting portion between the spectacle frame 102 and the temple holder 106. FIGS. 7B and 7C are schematic views illustrating a cross section taken along the alternate long and short dash line I-I ′ in FIG. FIG. 7B shows a case where the position of the protrusion 114 a of the rotating member 114 corresponds to the position of the recess 116. FIG. 7C shows a case where the position of the protrusion 114a of the rotating member 114 is located at a portion where the recess 116 is not formed.

  As shown in FIGS. 7B and 7C, the temple holder 106 is rotatable with respect to the spectacle frame 102 about the rotation shaft 118, and the rotation shaft 118 constitutes a hinge portion. Yes. Thereby, the temple holder 106 and the temple 112 can be folded by the hinge portion.

  Further, a screw 122 is fastened to the rotating member (cam) 114 with the leaf spring 120 interposed therebetween, whereby the rotating member 114 is attached to the temple holder 106. Thereby, the rotation member 114 can be rotated while generating a sliding resistance by the leaf spring 120 with respect to the temple holder 106, and when the angular position is determined, the position of the rotation member 114 is changed by the sliding resistance of the leaf spring 120. Retained. Two ends of the rotating member 114 are provided at positions where the protrusions 114a face each other by 180 °.

  The two grooves 116 of the spectacle frame 102 are provided along the locus of the protrusion 114a when the rotating member 114 is rotated. When the protrusion 114a is positioned at the deepest part of the groove 116 according to the angular position of the rotating member 114, the protrusion 114a is completely inserted into the groove 116 as shown in FIG. It becomes. For this reason, the opening angle of the temple holder 106 is maximized. Further, when the protrusion 114a is located at a portion where the groove 116 is not provided according to the angular position of the rotating member 114, the protrusion 114a is provided with the groove 116 as shown in FIG. Abut against a flat surface. For this reason, the opening angle of the temple holder 106 is minimized.

  The depth of the groove 116 is set to be different for each predetermined angle. As an example, a minus (−)-shaped groove is provided at the head of the screw 122. By rotating the screw 122 by engaging a minus driver, a coin, or the like with the groove, the screw 122 and the turning member 114 are rotated. Can be rotated together. As an example, when the protrusion 114a is positioned at the deepest part of the groove 116, when the screw is rotated 60 degrees, the position of the protrusion 114a moves to a position where the depth of the groove 116 is shallower by one step. The depth of the groove 116 is set so that, for example, the opening angle of the temple holder 106 (hinge angle) is narrowed by about 2.5 degrees when the position of the protrusion 114a is positioned at one step shallower than the groove 116. can do. Further, when the protrusion 114a comes into contact with a flat surface where the groove 116 is not provided, the opening angle (hinge angle) of the temple holder 106 is further reduced by about 2.5 degrees. Thereby, it is possible to adjust the opening angle in two steps (about 5 degrees), and it is possible to adjust the width between the two temples 112 to be narrower than the initial setting.

  In the above example, the rotating member 114 is provided with two protrusions 114a. However, the protrusion 114a may be one, or may be three or more. In addition, the above-described adjustment mechanism of the opening amount of the temple 112 by the rotating member 114 is shown as an example, and a similar function can be achieved even in a structure in which a slide piece is inserted and a mountain portion having a plurality of apexes is inserted and removed. It is.

  FIG. 8 is a schematic diagram illustrating an example in which an adjustment mechanism is configured by a slide piece. Here, FIG. 8B is a schematic diagram showing a cross section corresponding to the position along the alternate long and short dash line II ′ of FIG. 7A, similarly to FIGS. 7B and 7C. is there. FIG. 8A is a schematic diagram illustrating a cross section at a position along the alternate long and short dash line II-II ′ in FIG.

  As shown in FIG. 8A, an opening 122 is provided at the end of the temple holder 106, and a slide piece 120 is inserted into the opening 122. The slide piece 120 can reciprocate in the direction along the one-dot chain line II-II ′ in the opening 122. The slide piece 120 is provided with a protrusion 120 a on the side facing the frame 102. On the surface of the frame 102 facing the slide piece 120, a groove 126 whose depth changes stepwise along the movement direction of the protrusion 120a is provided. Further, a protrusion 120 b is provided on the side surface in the width direction of the slide piece 120, and the protrusion 120 b engages with one of the plurality of recesses 124 provided corresponding to the depth of the groove 126.

  According to such a configuration, when the slide piece 120 is slid, the position of the slide piece 120 is defined by the protrusion 120b engaging with the recess 124 and one. Since the depth at which the protrusion 120a contacts the groove 126 changes according to the position of the slide piece 120, the opening amount of the temple 112 can be adjusted as in the case of FIG.

  According to the above configuration, for example, when the initial temple width is set to 175 mm and the length is set to 130 mm, assuming that the depth of the groove 114 is provided in three stages, the adjustment is performed in one stage (2.5 degree adjustment). ), The temple width can be reduced to 164 mm. Furthermore, the temple width can be reduced to 153 mm by adjusting the second step, and it can be reduced to 141 mm by adjusting the third step. The glasses-type liquid crystal shutter holder 100 can be attached to a small head person such as a child. It becomes. Even for users with different head sizes due to the adjustment of the nose pad portion 110 and the temple width adjustment, it is possible to apply a temple spring pressure that can be stably mounted without making the user feel uncomfortable. The temple spring pressure is preferably about 80 to 120 grams. This recommended weight is an average value shown from the result of the wearing test by a plurality of persons.

  In addition, since the temple width can be adjusted by the rotating member 114, it is possible to prevent an excessive temple spring pressure from being applied to the head as compared with a case where the temple width is adjusted only by the elasticity of the temple 112.

[3. About fitting of glasses]
10 to 12 are schematic diagrams showing standard dimensions adapted to the eyesight adjustment glasses. 10 to 12 show a state in which the eyeglass-type liquid crystal shutter holder 100 is mounted from above the eyesight adjusting eyeglasses 300. In FIG. 10, the distance a is a statistical dimension related to the width of the head, and the average value from an adult male to a female is a = 160 mm to 152 mm. The distance a has a maximum value of about 174 mm and a minimum value of about 140 mm, and has a variable width of 34 mm. In order to enhance the wearing feeling of a plurality of users having different head sizes with a single spectacle holder, a certain amount of variable width is required for temple width adjustment.

  The distance b shown in FIG. 11 is the width between the noses and depends on the size of the eyeglass lens of the eyesight adjustment glasses and the shape of the eyeglass frame. The width between the pupils varies from an average value of 64 mm to 61 mm and a maximum of 71 mm to a minimum of 61 mm. The nose width (mountain width) left between the lens frames is about 14 mm to 19 mm, depending on the lens frame shape design. In general, a nose pad portion for eyesight adjustment glasses is often provided near the top of the nose and near the eyes without jumping out of the eyeglass frame in design.

  For this reason, when it is assumed that the eyeglasses are mounted on normal eyesight adjustment glasses, a liquid crystal shutter eyeglass holder 100 that is slightly larger than the frame of eyesight correction glasses is prepared, and at the same time, the shape of the saddle type nose pad part 110 and Optimize the placement position. Thereby, the arrangement in which the contact position of the nose pad portion 110 of the liquid crystal shutter glasses holder 100 with the nose does not interfere with the eyesight adjustment glasses can be performed, and double mounting can be established.

  The distance c shown in FIG. 12 is the distance from the apex of the cornea of the person wearing spectacles to the rear surface of the lens, and 12 mm is a general standard value for visual acuity adjustment. The distance d shown in FIG. 12 is the length of the temple from the back of the lens of the eyesight adjustment glasses to the ear. The temple width adjustment range corresponding to the width of the head is generally 20 to 80 mm, preferably about 40 mm. In order to cope with this, normal eyesight adjusting glasses often use elastic and relatively expensive alloy or resin temples. In the present embodiment, the eyeglass-type liquid crystal shutter holder 100 is mounted on the head by using both the adjustment of the temple width and the adjustment of the nose pad 110. At this time, by combining the rough head width by adjusting the temple width and the fine adjustment to the individual user of the nose pad 110, the tightening pressure on the head can be made uniform. ) Will be significantly improved. Further, the left and right temples of the eyeglasses for correcting vision are not always parallel, and there are some that have a temple width wider toward the ear side (the back side of the face) according to the face width of the wearer. The tip (modern) of the temple is curved inward from the straight line and is often fitted to embrace the back of the head.

  The fittings for adjusting eyesight correction glasses that customers have are: (1) align the left and right temples with the nose pads, (2) align the nose pads and the temple ears, and (3) tilt the lens. The angle is adjusted, and (4) at which position of the lens the center of the lens is arranged.

  In eyesight correction glasses, in order to obtain an appropriate lens position by adjusting the temple and adjusting the left and right nose pads, etc., the material used for the temple is devised, a titanium alloy with a low elastic modulus, or a Ni-Ti type shape. Some use an elastic member such as a memory alloy. Some of these elastic members are combined with a super elastic plastic (crystal imide resin) having both flexibility and durability and an amorphous thermo plastic (polyether imide resin) having a large elastic modulus. As a result, there is a method that employs a method or a material that produces an effect of relaxing stress without causing the temple to bend flexibly and break the temple.

  However, it is assumed that the fitting for the eyesight correction glasses is performed on the manufacturer side or the store side, and because it is for eyesight correction, it is fitting for a specific user. Therefore, for each user, fitting by customization of the actual item is performed.

  Since the liquid crystal shutter glasses holder 100 of the present embodiment is used as a set with a 3D television, for example, when it is assumed to be used in a home, a head of various sizes can be used regardless of whether it is an adult, a child, a man, or a woman. Used by users who have. In addition, since it is assumed that the user is using eyeglasses for correcting vision, the liquid crystal shutter eyeglass holder 100 of the present embodiment is intended to be used over the eyeglass lens holder for correcting eyesight.

  For this reason, in addition to the stepwise adjustment of the temple opening angle by the ratchet type adjustment mechanism described above, the temple itself is configured to be plastically deformable, so that it can be used in a variety of sizes, from adults to children, men and women. This makes it possible to fit optimally for a user who has a head.

  FIG. 9 is an exploded perspective view showing the structure of the temple 112. As for the material of the temple portion 112, a spring material 112a such as stainless steel is provided inside as a core material, and the surface is covered with a resin material 112b such as elastomer for improving the fit. The spring material 112a and the resin material 112b can be formed by integral molding together with the temple holder 106. Thereby, the temple 112 can be plastically deformed by bending by the user. And, in a state where it is plastically deformed into a desired shape, the temple 112 can be elastically deformed within a range in which the bend returns, so for example, when it is attached to the head by plastically deforming to a width slightly smaller than the head width. Since the temple 112 slightly expands due to elastic deformation, it can be held on the head using elasticity. Further, in combination with the deformation of the temple 112, the temple width is adjusted in two to four steps by the rotation of the rotating member 114 as described above. As a result, it is possible to optimally fine-tune the feeling of wearing to users with different head widths. By using the spring material 112a such as stainless steel as the core material, it is not necessary to use an expensive material used for normal glasses, and the manufacturing cost can be reduced. In order to further facilitate plastic deformation, a hole, a notch, or the like may be provided in the spring material 112a.

  FIGS. 13 and 14 are schematic views showing a state in which the glasses-type liquid crystal shutter holder 100 is mounted, and show a state in which the user's head is viewed from above. 11 and 12, the diagrams shown on the left side show a state where the temple 112 and the nose pad 110 are not fitted. Moreover, the figure shown on the right side has shown the state which deformed and fitted the temple 112 and the nose pad part 110 so that it might fit a user's head and nose.

  FIG. 13 shows a case where the user is an adult and the head is the size of a normal adult. In this case, the protrusion of the rotating member 114 is set at a position corresponding to the deepest portion of the groove 116, and the amount of opening of the temple 112 is maximized. Then, after the glasses-type liquid crystal shutter holder 100 is mounted on the head, the temple 112 is bent along the head. Thereby, when the user is an adult, the glasses-type liquid crystal shutter holder 100 can be fitted to the head in an optimal state.

  FIG. 14 shows a case where the user is a dwarf and the head is relatively small. In this case, the protrusion of the rotating member 114 is set at a position where the groove 116 is not formed, and the opening amount of the temple 112 is minimized. Then, after the glasses-type liquid crystal shutter holder 100 is attached to the head, the temple 112 is bent along the head. Thereby, when the user is a small person, the temple width can be made sufficiently small, and the glasses-type liquid crystal shutter holder 100 can be optimally fitted to the head.

  The saddle type nose pad 110 is configured to contact the nose at a position below the position of the nose pad used for normal glasses. Thereby, it can suppress that the nose pad part 302 of the glasses 300 for vision correction and the nose pad part 110 of the liquid-crystal shutter spectacles holder 100 interfere, and the structure where both nose pad parts touch a nose reliably. can do.

  In the eyeglass-type liquid crystal shutter holder 100 of the present embodiment, the saddle type nose pad portion 110 also employs a double structure of a core material and a covering material, like the temple portion. As the core material, a spring material such as stainless steel is used, and the surface thereof is covered with a resin material such as an elastomer. Thereby, the nose pad portion 110 can be freely deformed including normal deformation and deformation due to torsion, etc., and optimal fitting is possible when the user optimally deforms.

  FIG. 15 is a schematic diagram showing the front and back surfaces (side facing the face) of the nose pad portion 110 of the glasses-type liquid crystal shutter holder 100. The nose pad 110 is fixed to the frame 102 in the vicinity of the fixed position shown in FIG. When the user is an adult and the size and width of the nose are relatively large (in the case of a normal adult size), the opening amount of the nose pad portion 110 is largely adjusted according to the width of the nose. Fitting according to the size is possible.

  In addition, when the user is a small person and the size and width of the nose are relatively small, the fitting amount according to the size of the nose can be adjusted by adjusting the opening amount of the nose pad portion 110 to be small according to the width of the nose. It becomes possible.

  Further, by adjusting the opening amount of the nose pad 110, the position hb of the tip of the nose pad 110 shown in FIG. 10 and the depth hc of the tip of the nose pad 110 shown in FIG. 11 can be adjusted. As a result, when the eyeglass-type liquid crystal shutter holder 100 is mounted on the eyesight correction glasses, the nose pad portion of the eyesight correction glasses and the nose pad portion 110 of the eyeglass type liquid crystal shutter holder 100 interfere with each other. Can be suppressed. Further, the vertical position of the glasses-type liquid crystal shutter holder 100 can be made appropriate.

  FIG. 16 shows a case where a mechanism for adjusting the opening amount of the nose pad portion 110 is not provided as a comparative example. In this case, if the position of the glasses-type liquid crystal shutter holder 100 is moved forward so as not to interfere with the eyesight correction glasses 300, there is a problem that the glasses-type liquid crystal shutter holder 100 slides down. In this case, since the opening position of the liquid crystal shutter is shifted downward, there arises a problem that a part of the image on the display is lost.

  In the glasses-type liquid crystal shutter holder 100 according to this embodiment, the length of the nose pad 110 is sufficiently long so that the opening amount can be adjusted. Therefore, the glasses-type liquid crystal shutter holder 100 is separated from the eyesight correction glasses 300. Even in this case, the position of the liquid crystal shutter can be adjusted to the optical axis by adjusting the width ha of the tip of the nose pad 110, the position hb of the tip, and the depth hc of the tip of the nose pad 110. It is.

  The opening ha of the nose pad 110 is configured to be larger than the nose pad of the eyesight correction glasses in order to suppress interference with the eyesight correction glasses. Here, the width of the nose pad portion (the width b shown in FIG. 10) of the glasses for correcting vision is made to be about 16 mm to 18 mm as an average nose width value. Moreover, in the spectacles for children, the width of the nose is about 14 mm to 15 mm, and when included for infants, the minimum is about 12 mm. For this reason, by making the opening amount ha adjustable to 12 mm or more, it is possible to wear it from above all the glasses for correcting vision from adults to children.

  Since the glasses-type liquid crystal shutter holder 100 is mounted from above the eyesight correction eyeglass holder, it is necessary to make it one size larger than the standard outer shape of the eyesight correction eyeglass holder. For this reason, it is necessary to lower the position of the nose pad portion 110 that contacts the nose, and the contact width ha of the tip of the lower nose is about 20 mm. With respect to the optical axis, the tip is arranged at a position of about 25 mm (= hb) below the optical axis. As the distance direction with respect to the corneal surface, the standard distance from the back surface of the normal spectacle lens is 12 mm. Therefore, in the present embodiment in which double wear is possible for 13 mm (= hc) or more, the spectacle-type liquid crystal shutter spectacle holder 100 It is a preferable value that the back surface needs a height that does not hit the spectacle lens or the frame. Although it is necessary to consider the relationship with the customary wearing position of a normal eyesight correction eyeglass wearer, the relationship between the position of the large eyeglass-type liquid crystal shutter holder 100 and the position of the nose pad 110 and the light of the glasses. Even if the axis is slightly shifted, there is no problem in terms of performance when viewing stereoscopic images.

  By adopting the above structure, it is possible to satisfy all needs with one liquid crystal shutter eyeglass holder 100 regardless of whether it is male, female, adult or child. Also, for eyesight correction eyeglass users and users with different head widths, temple width adjustment and fine adjustment in two to four stages using a rotating ratchet mechanism and slide mechanism without using expensive materials. By using a combination of possible structures, it is possible to easily mount liquid crystal shutter glasses for viewing stereoscopic images and improve the wearing feeling. For head widths from 175 mm to 140 mm, which is the maximum head width from adult males to females (children), users can adjust the temple width step by ratchet mechanism and the spring effect of the temple itself. Individual optimization is possible.

  Further, in a normal unloading operation, the end portion (modern portion) of the temple 112 is adjusted according to a curved curve or a bend of the ear according to the curvature of the head while preventing permanent plastic deformation of the temple 112. be able to. These adjustments and the like can be performed very easily by the user himself / herself.

  As described above, according to the present embodiment, in the glasses-type liquid crystal shutter holder 100 that is worn from above the glasses for correcting vision, the nose pad portion 110 can be plastically deformed, and the tip position of the nose pad portion 110 can be opened. The amount can be adjusted. As a result, even when the eyeglasses for correcting vision are worn from above, they can be worn at an appropriate position on the optical axis.

  Further, according to the present embodiment, the temple part corresponding to the ear hook part has the hinge part and the rotating ratchet mechanism, and the width corresponding to the head part can be varied step by step. A protrusion 114a is provided on the rotating member 114 for changing the temple width, a groove 116 whose depth is changed stepwise is provided on the corresponding surface, and the eyeglass frame and the temple are attached by changing the angle of the rotating member 114. It is possible to switch the angle in steps. With these structures, it is possible for the user himself to easily adjust the stage from the initial shape to the average head width of the user, a size suitable for a maximum of about 175 mm to 140 mm. It can be applied to multiple users with different head widths only with attachments.

  Further, the temple 112 of the spectacle frame has a spring material 112a having a spring property such as stainless steel as a core material, and the surface is covered with a soft resin 112b, so that the temple 112 itself can be plastically deformed. It is possible to finely adjust the shape by applying an appropriate weight. This makes it possible for users to wear personally without using expensive materials and without having to deal with skilled techniques and special equipment and jigs, such as those performed during fine adjustment of normal eyesight correction glasses. Fine adjustments can be made to increase the feeling.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

100 glasses-type liquid crystal shutter holder 102 frame 110 nose pad 112 temple

Claims (2)

An opening for visually recognizing the image displayed on the display device with the left and right eyes, and a frame portion that is worn on the user's head from above the eyesight adjustment glasses;
A temple part attached to the frame part and held by the user's temporal region;
A nose pad portion provided on the frame portion and configured to be plastically deformable in contact with the user's nose below the nose pad portion of the eyesight adjustment glasses;
Eyeglasses for viewing images. An opening for visually recognizing the image displayed on the display device with the left and right eyes, and a frame portion that is worn on the user's head from above the eyesight adjustment glasses;
A temple part attached to the frame part and held by the user's temporal region;
A nose pad portion provided on the frame portion, contacting the user's nose from both sides, and having a width of at least 12 mm at both ends;
Eyeglasses for viewing images.

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