WO1995012140A1 - Folding spectacles - Google Patents

Folding spectacles Download PDF

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Publication number
WO1995012140A1
WO1995012140A1 PCT/IT1994/000173 IT9400173W WO9512140A1 WO 1995012140 A1 WO1995012140 A1 WO 1995012140A1 IT 9400173 W IT9400173 W IT 9400173W WO 9512140 A1 WO9512140 A1 WO 9512140A1
Authority
WO
WIPO (PCT)
Prior art keywords
moving
earpieces
segment
spectacles
segments
Prior art date
Application number
PCT/IT1994/000173
Other languages
French (fr)
Inventor
Silvio Vecellio Reane
Original Assignee
Ettore Bugatti S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ettore Bugatti S.R.L. filed Critical Ettore Bugatti S.R.L.
Priority to AU78623/94A priority Critical patent/AU7862394A/en
Publication of WO1995012140A1 publication Critical patent/WO1995012140A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/02—Bridges; Browbars; Intermediate bars
    • G02C5/08—Bridges; Browbars; Intermediate bars foldable
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/14—Side-members
    • G02C5/20—Side-members adjustable, e.g. telescopic

Definitions

  • the invention relates to a pair of folding spectacles.
  • the invention concerns folding spectacles which can be collapsed into a shape and size such as to occupy, when not in use, a smallest possible space, so that they can be conveniently stored in a pocket or small spectacle case.
  • the invention relates to folding spectacles provided with a front frame which is constituted by two lens frames connected one to the other by a bridge, on which a central hinge is predisposed to enable the lens frames to be folded one against the other.
  • the earpieces of this type of spectacle are generally subdivided into two parts, usually of a similar length and hinged one to the other by a hinge such that they can be folded to bring one up to the side of the other, obviously reducing the total length of the earpieces by about half, though giving rise to some instability of the spectacles themselves when in use.
  • Spectacles of this type provided with hinges on the bridge, the sides of the front frame and at a halfway point along the earpieces, can therefore be folded into a configuration wherein the two lens frames are folded side- by-side and the earpieces inserted between the lens frames .
  • Spectacles thus folded are therefore about the same size as one of the lenses and its frame.
  • the earpieces can be shortened only to about half of their extended length, unless an even more complicated and unstable configuration is employed which provides yet another hinge on each of the earpieces. It is also true that by reducing the length of the earpieces in this way their total folded breadth is increased, at least by three times if two hinges are used. In order to accommodate such increase in breadth, the front lens has to be exaggeratedly concave in shape, and in any case the final breadth of the folded spectacles will still be considerable.
  • the prior art also teaches further pairs of spectacles which can be folded in the above-described manner - with the two lens frames folded one on the other and the earpieces inserted between the two lens frames - which nevertheless are not provided with intermediate hinges on the earpieces.
  • Spectacles of this type exhibit considerable limitations and drawbacks, the first of which being that the earpieces are neither long enough to curl comfortably around the wearer's ears when the spectacles are unfolded and in use nor short enough (i.e. no longer than a distance between the end hinges and the bridge hinge) when the earpieces are folded up in the closed configuration.
  • variable-size spectacles are those which are provided with earpieces having adjustable length so that they can be adapted to the wearer's facial conformation.
  • a wearer can, for example, lengthen or shorten the earpieces so that the terminal, usually curved tract sits comfortably on the curve of the ear.
  • US patent 4306779 discloses some embodiments of spectacles with adjustable earpieces. The size variations obtained with these spectacles are however somewhat modest, and not such as to enable a good compacting of the spectacles to be made .
  • a principal aim of the present invention is to obviate the above-mentioned limitations by providing a pair of folding spectacles which are constructionally simple and which at the same time can be highly compacted without recourse to hinges on the earpieces or a concave conformation of the frame front to compensate for the shorter length of the earpieces hinged thereon.
  • One advantage of the invention is that the earpieces can be adjusted in length into a plurality of stable positions.
  • figure 1 is a schematic perspective view of the spectacles of the invention, in a fully extended use configuration
  • figure 2 is a schematic perspective view of the spectacles of figure 1, in a folded configuration
  • figure 3 is a schematic lateral view of one of the lateral earpieces, in a minimum-length configuration
  • figure 4 is a schematic section made along line IV-IV of figure 3, in enlarged scale
  • figure 5 is a schemtaic section made along line V-V of figure 4
  • figure 6 is a schematic section made along line VI-VI of figure 4.
  • 1 denotes a front frame of a pair of foldable spectacles comprising two lens frames 2 interconnected by a bridge 3.
  • a central hinge 4 is arranged on the bridge 3 to allow for folding of the lens frames 2 one on to the other.
  • Two earpieces 5 are arranged on lateral ends of the front frame; more precisely, one earpiece 5 is hinged on one of the two lens frames 2, and another earpiece on the other of the two lens frames 2, by means of side-hinges 6.
  • side-hinges 6 The foregoing describes characteristics which can be found in folding spectacles of known type, in some of which it is even possible, among other things, to vary the length of the earpieces thanks to the fact that the earpieces themselves are provided with a moving part.
  • each of the earpieces 5 comprises a plurality of moving segments 7 which are coupled telescopically one to a next.
  • figure 1 shows a maximum length while figures 3 demonstrates a minimum length.
  • each of the earpieces 5 is shorter than a distance between the central hinge 4 and the side-hinge 6 the earpiece 5 is hinged to.
  • the telescopic moving segments 7 are elongate, tubular and have a straight and constant transversal section. In the minimum length conformation, the moving segments 7 are enclosed one in another such that the earpiece 5 has a transversal mass which is equal to that of the largest moving segment 7.
  • the moving segments 7 are elongate in a vertical direction, and thanks to this conformation of the moving segments 7, the earpieces 5 are rigid in the vertical direction and which is greater than their rigidity in a direction normal to the vertical and the sliding axis of the moving segments 7.
  • the earpiece 5 is, therefore, less rigid in a direction which is normal to the wearer's temples.
  • the earpieces 5 are' strong and particularly flexible laterally, and thus can be easily adapted to fit whoever is going to wear the spectacles.
  • the moving segments 7 exhibit an external lateral surface which is provided with a convex surface 12 on one side and a concave surface 11 on the opposite side.
  • the concave surfaces 11 are disposed such as to face the wearer's temples while the convex surfaces 12 face externally.
  • the side-hinge 6 of each earpiece 5 is arranged on the most external moving segment 7.
  • Each of the moving segments 7 comprises a slot 8 developing longitudinally in the sliding direction of the segments 7 and which is arranged along the median zone of the concave surface 11.
  • a pivot 9 is predisposed at an end of each segment 7, projects internalwise of the cavity inside the segment, and is of a same diameter as the width of the slot 8 of the segment 7 internally sliding in the segment 7 bearing the pivot .
  • each segment 7 projects into the internal segment cavity by a smaller length than the depth of the slot 8 of the segment 7 sliding internally of the segment 7 bearing the pivot 9.
  • each pivot 9, slidingly coupled to the respective slot 8 is uninterferingly slidable with the segments 7 internal of the segment 7 exhibiting the slot.
  • the slot 8 of the most internal moving segment 7 is formed by a plurality of hollow seats 13 aligned in the sliding direction of the moving segments 7 and houses the pivot 9 of the segment 7 which is externally slidable to the most internal segment 7. Thanks to the presence of the hollow seats 13 a fine adjustment of the earpiece 5 length can be made, so that the spectacles can be adapted to a particular face of a wearer.
  • the earpieces 5 can indeed assume a plurality of stable positions (a number corresponding to the number of hollow seats 13) all closely ranged, and defined by the positions assumed by the pivot 9 of the penultimate segment when it is housed in a hollow seat 13.
  • Each moving segment 7 has a threaded hole at one end, which hole receives a screw 10, an end of which screw projects into the segment 7: this screw end constitutes the pivot 9.
  • the moving segments 7 might not be tubular, and might instead, for example, exhibit a C-shaped transversal section, or possibly truncoconical tubular elements inserted one inside another. In the last case the greatest external diameter of an element is greater than the smallest internal diameter of the element it is inserted in.
  • the pivots 9 of each moving segment 7 are made in a single piece with the segment 7 itself, for example by drawing.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

The folding spectacles exhibit a front frame (1) composed of two lens frames (2) reciprocally hinged, and two earpieces (5), each of which is hinged to one of the lens frames (2). The earpieces (5) each comprise a plurality of moving segments (7) telescopically and slidably coupled one to a next such that each of the earpieces (5) can assume a series of configurations comprised between a maximum extension and a minimum extension thereof; in the minimum extension configuration the earpieces (5) can be housed compactly between the lens frames (2) when folded one on another.

Description

Description.
Folding Spectacles.
Technical Field.
The invention relates to a pair of folding spectacles.
In particular the invention concerns folding spectacles which can be collapsed into a shape and size such as to occupy, when not in use, a smallest possible space, so that they can be conveniently stored in a pocket or small spectacle case.
More precisely, the invention relates to folding spectacles provided with a front frame which is constituted by two lens frames connected one to the other by a bridge, on which a central hinge is predisposed to enable the lens frames to be folded one against the other. The earpieces of this type of spectacle are generally subdivided into two parts, usually of a similar length and hinged one to the other by a hinge such that they can be folded to bring one up to the side of the other, obviously reducing the total length of the earpieces by about half, though giving rise to some instability of the spectacles themselves when in use.
Background Art.
Spectacles of this type, provided with hinges on the bridge, the sides of the front frame and at a halfway point along the earpieces, can therefore be folded into a configuration wherein the two lens frames are folded side- by-side and the earpieces inserted between the lens frames .
Spectacles thus folded are therefore about the same size as one of the lenses and its frame. Apart from the rather complex construction of spectacles of this type, the earpieces can be shortened only to about half of their extended length, unless an even more complicated and unstable configuration is employed which provides yet another hinge on each of the earpieces. It is also true that by reducing the length of the earpieces in this way their total folded breadth is increased, at least by three times if two hinges are used. In order to accommodate such increase in breadth, the front lens has to be exaggeratedly concave in shape, and in any case the final breadth of the folded spectacles will still be considerable.
The prior art also teaches further pairs of spectacles which can be folded in the above-described manner - with the two lens frames folded one on the other and the earpieces inserted between the two lens frames - which nevertheless are not provided with intermediate hinges on the earpieces.
Some examples of such folding spectacles are disclosed in GB patents 2253712 and 2245989. Spectacles of this type, however, exhibit considerable limitations and drawbacks, the first of which being that the earpieces are neither long enough to curl comfortably around the wearer's ears when the spectacles are unfolded and in use nor short enough (i.e. no longer than a distance between the end hinges and the bridge hinge) when the earpieces are folded up in the closed configuration.
Also included in the field of variable-size spectacles are those which are provided with earpieces having adjustable length so that they can be adapted to the wearer's facial conformation. A wearer can, for example, lengthen or shorten the earpieces so that the terminal, usually curved tract sits comfortably on the curve of the ear. US patent 4306779 discloses some embodiments of spectacles with adjustable earpieces. The size variations obtained with these spectacles are however somewhat modest, and not such as to enable a good compacting of the spectacles to be made .
Disclosure of the Invention.
A principal aim of the present invention is to obviate the above-mentioned limitations by providing a pair of folding spectacles which are constructionally simple and which at the same time can be highly compacted without recourse to hinges on the earpieces or a concave conformation of the frame front to compensate for the shorter length of the earpieces hinged thereon.
One advantage of the invention is that the earpieces can be adjusted in length into a plurality of stable positions. These aims and others besides are all attained by the spectacles of the invention, as it is characterized in the claims that follow, which exhibit, like known-type spectacles, a front frame containing two lens frames hinged one to the other, and two earpieces, hinged each to a respective lens frame, and in which each earpiece comprises a plurality of moving segments which are telescopically and slidably coupled one to another. Further characteristics and advantages of the present invention will better emerge from the detailed description that follows, of an embodiment of the invention, illustrated in the form of a non-limiting example in the accompanying drawings, in which: figure 1 is a schematic perspective view of the spectacles of the invention, in a fully extended use configuration; figure 2 is a schematic perspective view of the spectacles of figure 1, in a folded configuration; figure 3 is a schematic lateral view of one of the lateral earpieces, in a minimum-length configuration; figure 4 is a schematic section made along line IV-IV of figure 3, in enlarged scale; figure 5 is a schemtaic section made along line V-V of figure 4; figure 6 is a schematic section made along line VI-VI of figure 4.
With reference to the figures, 1 denotes a front frame of a pair of foldable spectacles comprising two lens frames 2 interconnected by a bridge 3.
A central hinge 4 is arranged on the bridge 3 to allow for folding of the lens frames 2 one on to the other. Two earpieces 5 are arranged on lateral ends of the front frame; more precisely, one earpiece 5 is hinged on one of the two lens frames 2, and another earpiece on the other of the two lens frames 2, by means of side-hinges 6. The foregoing describes characteristics which can be found in folding spectacles of known type, in some of which it is even possible, among other things, to vary the length of the earpieces thanks to the fact that the earpieces themselves are provided with a moving part. In the present invention each of the earpieces 5 comprises a plurality of moving segments 7 which are coupled telescopically one to a next. The embodiment of the figures has five such moving segments 7, but obviously other embodiments might have a different number thereof. By exploiting the relative slidability of the moving segments 7 the earpieces 5 can be made to take on different lengths: figure 1 shows a maximum length while figures 3 demonstrates a minimum length.
The configuration of figure 3, being of a minimum length, enables the earpieces 5 to be folded on the respective lens frames 2 and conseguently the lens frames 2 to be folded one on to the other, thus achieving the fully- folded configuration of figure 2. In the minimum length configuration, each of the earpieces 5 is shorter than a distance between the central hinge 4 and the side-hinge 6 the earpiece 5 is hinged to. The telescopic moving segments 7 are elongate, tubular and have a straight and constant transversal section. In the minimum length conformation, the moving segments 7 are enclosed one in another such that the earpiece 5 has a transversal mass which is equal to that of the largest moving segment 7.
When the earpiece 5 is mounted on the front frame, the moving segments 7 are elongate in a vertical direction, and thanks to this conformation of the moving segments 7, the earpieces 5 are rigid in the vertical direction and which is greater than their rigidity in a direction normal to the vertical and the sliding axis of the moving segments 7. The earpiece 5 is, therefore, less rigid in a direction which is normal to the wearer's temples. As a result the earpieces 5 are' strong and particularly flexible laterally, and thus can be easily adapted to fit whoever is going to wear the spectacles.
The moving segments 7 exhibit an external lateral surface which is provided with a convex surface 12 on one side and a concave surface 11 on the opposite side. When the earpiece 5 is mounted on the front frame 1, the concave surfaces 11 are disposed such as to face the wearer's temples while the convex surfaces 12 face externally. The most internal telescopic moving segment 7, which is also the smallest, solidly bears the surface of the earpiece 5 which will sit on the ear. The side-hinge 6 of each earpiece 5 is arranged on the most external moving segment 7.
Each of the moving segments 7 comprises a slot 8 developing longitudinally in the sliding direction of the segments 7 and which is arranged along the median zone of the concave surface 11.
A pivot 9 is predisposed at an end of each segment 7, projects internalwise of the cavity inside the segment, and is of a same diameter as the width of the slot 8 of the segment 7 internally sliding in the segment 7 bearing the pivot .
The pivot 9 of each segment 7 projects into the internal segment cavity by a smaller length than the depth of the slot 8 of the segment 7 sliding internally of the segment 7 bearing the pivot 9. Thus each pivot 9, slidingly coupled to the respective slot 8, is uninterferingly slidable with the segments 7 internal of the segment 7 exhibiting the slot. The slot 8 of the most internal moving segment 7 is formed by a plurality of hollow seats 13 aligned in the sliding direction of the moving segments 7 and houses the pivot 9 of the segment 7 which is externally slidable to the most internal segment 7. Thanks to the presence of the hollow seats 13 a fine adjustment of the earpiece 5 length can be made, so that the spectacles can be adapted to a particular face of a wearer. The earpieces 5 can indeed assume a plurality of stable positions (a number corresponding to the number of hollow seats 13) all closely ranged, and defined by the positions assumed by the pivot 9 of the penultimate segment when it is housed in a hollow seat 13. Each moving segment 7 has a threaded hole at one end, which hole receives a screw 10, an end of which screw projects into the segment 7: this screw end constitutes the pivot 9.
In other embodiments of the invention 1 the moving segments 7 might not be tubular, and might instead, for example, exhibit a C-shaped transversal section, or possibly truncoconical tubular elements inserted one inside another. In the last case the greatest external diameter of an element is greater than the smallest internal diameter of the element it is inserted in. In still further embodiments the pivots 9 of each moving segment 7 are made in a single piece with the segment 7 itself, for example by drawing.

Claims

Claims .
1. Folding spectacles, of the type comprising: a front frame (1), with two lens frames (2) connected one to another by a bridge (3) whereon a central hinge (4) is disposed, which hinge (4) enables one of said lens frames (2) to be folded one on to the other thereof; two earpieces (5), one of which is hinged at a side of one of the two lens frames (2) by means of a side-hinge (6), another of which is hinged at a side of another of the two lens frames (2), by means of a further side-hinge (6); each of which two earpieces (5) comprising a moving part by means of which a length of the two earpieces (5) can be adjusted; characterised in that each of the two earpieces (5) comprises a plurality of moving segments (7) which are telescopically and slidingly coupled one to a next such that said each of the two earpieces (5) can be adjusted into a variety of configurations exhibiting varying lengths between a longest configuration and a shortest configuration.
2. Folding spectacles as in claim 1, characterised in that each of the two earpieces (5) exhibits, in the shortest configuration, a shorter length than a distance between the central hinge (4) and one of the hinges (6), and a transversal mass which is equal to a mass of the moving segment (7) having a largest transversal mass.
3. Folding spectacles as in claim 1, characterised in that each of the moving segments (7) comprises: a slot (8) developing longitudinally in a sliding direction of the moving segments (7) and which projects internally of a moving segment (7); a pivot (9) disposed at an end of a moving segment (7) and projecting internally of the moving segment (7) and having a diameter which is equal to a width of the slot (8) of a moving segment (7) slidably coupled to the moving segment (7); the pivot (9) of the moving segment (7) being slidably coupled with the slot (8) of the segment (7) slidably coupled internally thereof and projecting therein by an inferior distance to a depth of the slot (8) .
4. Folding spectacles as in claim 3, characterised in that each of the moving segments (7) comprises a threaded hole disposed at an end thereof, for housing a screw (10); said pivot (9) being an end portion of the screw (10) projecting internally of the moving segment (7).
5. Folding spectacles as in claim 3, characterised in that the pivot (9) of each moving segment (7) is an integral part of said moving segment (7).
6. Folding spectacles as in claim 1, characterised in that each of the moving segments (7) is elongate and has a straight transversal section of constant dimensions.
7. Folding spectacles as in claim 1, characterised in that a part of each of the two earpieces (5) which rests on a wearer's ear is solid to a most internal of the moving segments (7), and in that the side-hinge (6) of each of the two earpieces (5) is disposed on a most external of the moving segments (7); the slot (8) of the most internal of the moving segments (7) being formed by a plurality of aligned hollow seats (13) situated along a sliding axis of the telescopic moving segments (7), each of said plurality of hollow seats (13) being disposed to house the pivot (9) of a penultimate of the moving segments (7).
8. Folding spectacles as in claim 1, characterised in that the moving segments (7) are truncoconically shaped.
9. Folding spectacles ass in claim 3, characterised in that the moving segments (7) are of a tubular shape and have a convex surface (12) facing externally and a concave surface (11) which, when the spectacles are in use, faces a wearer's temples; said slot (8) being disposed at a centre of the concave surface (11).
PCT/IT1994/000173 1993-10-29 1994-10-17 Folding spectacles WO1995012140A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU78623/94A AU7862394A (en) 1993-10-29 1994-10-17 Folding spectacles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI930137 1993-10-29
ITM093A000137 1993-10-29

Publications (1)

Publication Number Publication Date
WO1995012140A1 true WO1995012140A1 (en) 1995-05-04

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ID=11425318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1994/000173 WO1995012140A1 (en) 1993-10-29 1994-10-17 Folding spectacles

Country Status (2)

Country Link
AU (1) AU7862394A (en)
WO (1) WO1995012140A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640218A (en) * 1994-12-06 1997-06-17 Kanda Optical Co., Ltd. Foldable spectacles with temple members having deformable earpieces for fitting into compact case
US5929966A (en) * 1998-03-24 1999-07-27 Conner; William A. Folding eye glass frames with length adjustable temples
FR2852208A1 (en) * 2003-03-10 2004-09-17 Shark Sa Goggles for crash helmet has sprung side temples to allow goggles to clamp around helmet
US8132908B2 (en) 2007-11-27 2012-03-13 Greed S.r.l Articulated spectacle frames with wire assembled components
KR200461816Y1 (en) * 2010-06-30 2012-08-07 주식회사 이랜텍 Liquid crystal shutter glasses with variability the temples

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361514A (en) * 1964-04-02 1968-01-02 Davis Jeannette Folding eyeglass assembly with extensible bow members for gripping wearer's head
FR2457504A1 (en) * 1979-05-25 1980-12-19 Fortini Umberto MOUNTING GLASSES WITH TILTING GLASSES
US4681410A (en) * 1985-06-14 1987-07-21 Paulsen Al W Foldable eyeglasses
GB2245989A (en) * 1990-05-30 1992-01-15 Nikon Corp Collapsible spectacle frame with movable nose pads
DE9318846U1 (en) * 1993-12-08 1994-02-03 Lin, Linus, Taichung Glasses with extendable temples

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361514A (en) * 1964-04-02 1968-01-02 Davis Jeannette Folding eyeglass assembly with extensible bow members for gripping wearer's head
FR2457504A1 (en) * 1979-05-25 1980-12-19 Fortini Umberto MOUNTING GLASSES WITH TILTING GLASSES
US4681410A (en) * 1985-06-14 1987-07-21 Paulsen Al W Foldable eyeglasses
GB2245989A (en) * 1990-05-30 1992-01-15 Nikon Corp Collapsible spectacle frame with movable nose pads
DE9318846U1 (en) * 1993-12-08 1994-02-03 Lin, Linus, Taichung Glasses with extendable temples

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640218A (en) * 1994-12-06 1997-06-17 Kanda Optical Co., Ltd. Foldable spectacles with temple members having deformable earpieces for fitting into compact case
EP0782030A1 (en) * 1994-12-06 1997-07-02 Kanda Optical Co., Ltd. Encased foldable spectacles
US5929966A (en) * 1998-03-24 1999-07-27 Conner; William A. Folding eye glass frames with length adjustable temples
EP1046942A1 (en) * 1998-03-24 2000-10-25 William A. Conner Folding eye glass frames with lenght adjustable temples
FR2852208A1 (en) * 2003-03-10 2004-09-17 Shark Sa Goggles for crash helmet has sprung side temples to allow goggles to clamp around helmet
WO2004080224A1 (en) * 2003-03-10 2004-09-23 Shark Spectacles for a helmet and helmet fitted with said spectacles
US8132908B2 (en) 2007-11-27 2012-03-13 Greed S.r.l Articulated spectacle frames with wire assembled components
KR200461816Y1 (en) * 2010-06-30 2012-08-07 주식회사 이랜텍 Liquid crystal shutter glasses with variability the temples

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