WO1987005123A1 - Paire de lunettes - Google Patents

Paire de lunettes Download PDF

Info

Publication number
WO1987005123A1
WO1987005123A1 PCT/US1986/000310 US8600310W WO8705123A1 WO 1987005123 A1 WO1987005123 A1 WO 1987005123A1 US 8600310 W US8600310 W US 8600310W WO 8705123 A1 WO8705123 A1 WO 8705123A1
Authority
WO
WIPO (PCT)
Prior art keywords
peripheral edge
groove
lens
inner peripheral
eye glass
Prior art date
Application number
PCT/US1986/000310
Other languages
English (en)
Inventor
Keith E. West
Kenneth L. Richardson
Original Assignee
West Keith E
Richardson Kenneth 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 West Keith E, Richardson Kenneth L filed Critical West Keith E
Priority to AU55156/86A priority Critical patent/AU5515686A/en
Priority to PCT/US1986/000310 priority patent/WO1987005123A1/fr
Priority to EP86901624A priority patent/EP0258225A1/fr
Publication of WO1987005123A1 publication Critical patent/WO1987005123A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/06—Bridge or browbar secured to or integral with closed rigid rims for the lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/10—Special mounting grooves in the rim or on the lens

Definitions

  • the present invention pertains to an eye glass assembly and more particularly to an improved means for mounting an eye glass lens within the rim portion of an eye glass frame.
  • the frame of the safety glass includes a rim portion which is thicker on the back side of the rim than on the front. As a result, the leg of the V-shaped groove on the side of the groove facing the rim back side is longer than its opposing leg. With this configuration, there is increased surface area opposing movement of the lens out of the back of the rim portion.
  • Conventional eye glasses included lenses formed from tempered glass or a plastic known in the industry as CR-39.
  • prior art V-shaped grooves and safety glasses were adequate since the strength of the lens material was less than the strength of the bond between the lens and the rim. As a consequence, upon impact by a given force, the lens would fracture even though the force would not be sufficient to dislodge the lens.
  • an eye glass assembly comprising an eye glass frame having a rim portion with an inner peripheral .edge which defines a lens receiving opening.
  • a groove is formed in the inner peripheral edge surrounding the opening.
  • the groove defining surfaces include an annu ⁇ lar rear retaining surface adjacent the back side of the rim portion.
  • the annular rear retaining surface is generally parallel to a dimension extending between opposing surfaces of the inner peripheral edge.
  • An eye glass lens of the present invention has an outer peripheral edge sized to be received within the lens receiving opening.
  • a retaining ridge is disposed on the outer peripheral edge and protrudes into the groove formed in the rim.
  • the retaining ridge has a first annular retaining surface opposing the rear retaining surface and parallel thereto.
  • the eye glass assembly of the present invention has an improved bond between the eye glass lens and the eye glass frame.
  • the improved bond requires greater force to dislodge the lens from the frame on impact.
  • the pre ⁇ sent invention provides for surprising benefits in that the method of manufacture enhances quality control since wear of the lens grinding machinery will be more readily detected during assembly of the eye glass.
  • BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of an eye glass assembly according to the present invention
  • Fig. 2 is a view taken along line II-II of Fig. 1;
  • Fig. 3 is a sectional view similar to Fig. 2 showing an eye glass of the prior art;
  • Fig. 4 is a view similar to that of Fig. 3 showing an alternative eye glass of the prior art
  • Figs. 5 and 6 are sectional view of alternative embodiments of the present invention.
  • Fig. 7 is a top plan view of an eye glass assembly according to the present invention.
  • Figs. 8-10 are views of eye glass lenses according to the present invention
  • Fig. 11 is a sectional view of an eye glass assembly of the prior art
  • Fig. 12 is a view similar to that of Fig. 11 of the eye glass assembly of the present invention.
  • Figs. 13 and 14 are views of the eye glass of the prior art and the present invention, respectively, showing, in vector format, the response of the eye glass to impact.
  • Figs. 3 and 4 show prior art means for mounting eye glass lenses within the rim portions of an eye glass frame.
  • Fig. 3 shows the mounting for a normal eye glass
  • Fig. 4 shows the mounting for a safety glass.
  • the rim portion 50 has a cylindrical inner sur ⁇ face 51.
  • a V-shaped groove 52 is formed within inner sur- face 51 and extends completely about the rim.
  • a lens 53 has its peripheral edge 54 ground such that the peripheral edge 54 is generally cylindrical and includes a V-shaped convex ridge 55 which conforms with the size and shape of concave groove 52.
  • Fig. 3 shows the mounting for a normal eye glass
  • Fig. 4 shows the mounting for a safety glass.
  • the rim portion 50 has a cylindrical inner sur ⁇ face 51.
  • a V-shaped groove 52 is formed within inner sur- face 51 and extends completely about the rim.
  • a lens 53 has its peripheral edge 54 ground such that the peripheral edge 54 is generally cylindrical and includes a V-shaped convex ridge 55 which conform
  • the safety glass is shown as having a rim 60 having a V-shaped concave groove 62 formed in its inner peripheral surface 61.
  • the safety glass rim 60 is formed such that the thickness of the rim on the side 60a facing the user is thicker than on the side 60b facing away from the user.
  • the lens 63 has a convex
  • V-shaped bevel 65 sized to conform with groove 62.
  • the increased thickness portion 60a is provided to prevent the lens 63 from being popped out of the rim 60 and impacted against the user by reason of a force applied to the lens urging it toward the user.
  • the assembly 10 comprises a frame 12 which includes two rim portions 14 and 14a.
  • the rim portions 14, 14a are joined by a bridge 16. Extending from opposite portions of the rims 14, 14a are a pair of bows 18 and -18a to be hung on ears of a user.
  • the rims 14, 14a surround eye glass lenses 20 and 20a.
  • Lenses 20 and 20a are formed of transparent rigid and durable material, preferably polycarbonate.
  • Lenses 20, 20a are mounted within rim portions 14, 14a in similar man ⁇ ners and the description of the mounting of lens 20 will suffice as the description of the mounting of lens 20a.
  • frame 12 is formed from a flat sheet of frame material such as plastic.
  • the opening within the rim portions 14, 14a is cut out and a groove is formed in the inner peripheral edge of the rim. With the groove formed, the frame 12 is formed to provide a slight arc for each of the rim portions 14, 14a, as can be seen in the view of Fig. 7.
  • the rim 14 has a generally cylindrical inner peripheral edge 22 as shown in Fig. 2.
  • cylindrical is not intended to mean circular in cross section, but instead means that opposing surfaces are parallel.
  • the opposing surfaces of edge 22 defines a lens receiving opening 24.
  • the rim portion 14 is provided with a continuous groove 26 formed along the inner peripheral edge 22.
  • the groove is defined by surfaces of the rim portion 14 with the groove defining surfaces including an annular rear retaining surface 26a and an opposing axially aligned spaced apart forward retaining surface 26b.
  • Surface 26a and 26b are formed generally perpendicular to edge 22.
  • sur ⁇ faces 26a and 26b will not be planar surfaces but will reside in a surface having a radius equal to the radius of curvature of the rim portion. When so formed, these annu ⁇ lar surfaces 26a and 26b will, be generally parallel to the direction of a dimension extending between the opposing /• surfaces of the inner peripheral edge 22. i
  • an eye glass lens 20 may be formed.
  • the lens blank is mounted in conventional equipment for rota ⁇ tion about its axis.
  • a grinding tool dimensioned to grind out a ridge as will be described is mounted for rotation about a parallel axis and movable about the periphery of the lens blank in a path for its grinding element to follow the contour of the inner peripheral edge 22 of rim portion 14 and also movable within the non-planar surface of groove 26.
  • the lens 20 is formed by grinding the peripheral edge of the lens blank such that the. finished lens 20 has an outer peripheral edge 30 which conforms in shape to . inner peripheral edge 22 in abutting relation.
  • a continuous integrally form and rigid retaining ridge 32 is disposed on the outer peripheral edge of the lens 28 and protrudes theref om.
  • the retaining edge 32 is sized to be received within groove 26 and is provided with a first annular retaining surface 32a which is parallel and abutting annu- lar rear retaining surface 26a. Similarly, edge 32 is pro ⁇ vided with a second annular retaining surface 32b which is parallel and abutting rear retaining surface 26b.
  • rim 14 of frame 12 (which is preferably made of metal or plastic which will expand and soften when heated) is heated and lens 20 is inserted within opening 24 with retaining ridge 32 received within groove 26. So mounted, the eye glass assembly 10 has remarkably improved bonding between lens 20 and rim portion 14. This is attributable to the fact that the surface 32a and abutting surface 26a are parallel to the dimension. extending between the opposing surfaces of edge 22. As a consequence of this alignment, impact on the front surface of such a lens (for example, lens 59' in rim 67' shown in Fig.
  • the mounting of the present invention creates a moment about the ridge 32 at the point of interface between outer peripheral edge 30 and inner peripheral edge 22. As a result, the lens is not directed out of the rim 14 upon impact.
  • the limiting factor in the safety of the glass is no longer the strength of the mount but is instead the superior strength of the polycarbonate lens material.
  • the lens of Fig. 8 is a piano lens 70 having its convex surface 70a provided with a radius of curvature equal to that of its concave surface 70b.
  • Such lenses are commonly used in recreational eye wear or industrial eye wear for people having normal vision.
  • the piano lens of the present inven ⁇ tion has a generally cylindrical outer peripheral edge 71 meaning that opposing surfaces of the edge 71 are parallel (not necessarily circular in cross section).
  • the ridge 72 extends generally perpendicular to the edge 71 and lies in the surface of curvature of a groove formed in the rim por ⁇ tion of a frame for which lens 70 is intended.
  • FIG. 9 shows a minus power lens 80 for use in eye wear for near sighted individuals.
  • the convex surface 80a has a longer radius of curvature than that of concave surface 80b.
  • Fig. 10 shows a plus power lens 90 for far sighted individuals where the convex surface 90a has a shorter radius of cur ⁇ vature than the concave surface 90b.
  • Each of the lenses in Figs. 8 through 10 has a retaining ridge according to the present invention lying in the surface of curvature of its intended groove in an eye glass frame.
  • the plus power lens 90 the outer peripheral edge of the lens narrows down to about one millimeter which is fairly standard. As a result, this provides a practical limitation on the spacing between surface 32a and 32b of lens ridge 32.
  • FIG. 5 shows an alternative embodiment of the pre- sent invention where the rim portion 14' has an inner peripheral ridge 22' in which is disposed a groove 26' of the present invention.
  • the thickness of the rim portion 14' on the side of groove 26' which includes surface 26a' has an increased thickness represented by the letter D.
  • the distance between the opposing surfaces is smaller than the distance between opposing surfaces on the side of groove 26' away from the wearer. This provides additional shoulder space on surface 26a' which further inhibits dislodgement of the lens and provides a greater moment at the rim 14' to redirect an impact.
  • the present invention is also adaptable to prior art eye glass frames having V-shaped grooves along the inner peripheral edge of the frame rim portions.
  • the prior art V-shaped grooves are conven ⁇ tionally one millimeter in depth from the base of the groove to the apex (indicated by dimension O ⁇ ) .
  • O ⁇ the apex
  • Fig. 6 shows a particular embodiment of the present invention specifically suited for adapting prior art eye glass frames to the teachings of the present inven ⁇ tion. In the embodiment of Fig.
  • the rim 14' ' was origi ⁇ nally provided with a V-shaped groove 62' ' disposed in the inner peripheral edge 61 ' ' .
  • a second groove 26'' is formed within the first groove 62''.
  • the second groove 26'' is formed by cutting away the waste material 14a' 1 and 14b 1 ' between the desired location of a rear annular retaining wall 26a'' and a forward annular retaining wall 26b 1 ' both within the teachings of the pre ⁇ sent invention. It has been shown how the teachings of the present invention provide for an eye glass assembly with advantages over the prior art. Namely, by using the present inven ⁇ tion, the full benefit attainable with improved lens material such as polycarbonate can be attained.
  • the present invention provides for an additional surprising benefit which improves quality control in pro ⁇ duction of eye glasses and further insures safety for the eye glass wearing public.
  • the quality of the bond between the lens 53' and the rim 50' requires that the V-shaped ridge 55' be shaped as closely as possible to conform with the V-shaped groove 52'.
  • the outer peripheral edges 54' and V-shaped ridge 55' are typically formed by grinding elements having a profile corresponding to the profile of the desired ridge 55' and edge 54'. Throughout the usage of the grinding tool, the tool wears with use.
  • the first portion of the tool to show substantial wear is the portion which defines and shapes the V-shaped ridge.
  • the V-shaped ridge 55' tends to lower its apex and spread out the opposing legs which define the V-shape.
  • lenses made on the cutting tool become increasingly out of alignment (as shown in Fig. 11) and become increasingly likely to pop out of the rim portion 50'.
  • the wear on the tool becomes so great that an operator will notice the improper fit.
  • a substantial number of inferior products may find their way into the marketplace and present a potential substantial risk of serious injury to the eye glass wearing public.
  • Fig. 12 shows a rim portion 14''' having a groove 26' '' according to the pre- sent invention formed along its inner peripheral edge 22' 1 '.
  • a lens member 20 ' ' ' is provided having its ridge 32''' made according to the present invention.
  • the ridge 32" • ' will be formed on grinding elements having profiles identical to that of the desired profile of ridge 32''' and outer peripheral edge 30'''. As the grinding element wears through use, the distance between opposing retaining walls 32a' 1 ' and 32b 11 ' will increase. As a result, the ridge 32' ' ' will no longer fit into the groove 26 ' ' ' as the grinding tool wears.
  • the lens production method of the present invention is self correcting.
  • the operator will quickly notice this since it will become impossible to fit the lens 20''' into the rim portion 14'' '. Being promptly alerted to the wear of the grinding tool, the operator can take necessary steps to repair or replace it thereby insuring that only properly mated lenses 20 ' ' ' and rims 14 ' ' ' will find their way to the consumer.
  • the objects of the present invention have been attained in a preferred manner. Modifications and equivalents of the disclosed contents such as readily occur to those skilled in the art are intended to be included in the scope of this invention. Thus, the scope of this invention is intended to be limited only by the scope of the claims such as are, or may here ⁇ after be, appended hereto.

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

Abstract

La paire de lunettes ci-décrite possède une monture (12) comportant une partie-bord (14) pourvue d'un rebord périphérique intérieur s'étendant entre la face avant de la monture et la face arrière de cette dernière. Les surfaces en regard de la partie bord définissent une gorge (26) dans le rebord périphérique, cette gorge comprenant une première surface annulaire arrière de blocage (26a) et, en regard, une surface annulaire avant le blocage (26b), toutes deux étant généralement parallèles à une dimension s'étendant entre les surfaces en regard du rebord périphérique intérieur. Une lentille oculaire (20) est dimensionnée pour venir se loger à l'intérieur de la partie-bord et possède un rebord périphérique extérieur dimensionné pour se loger contre le rebord périphérique intérieur du bord. Une partie protubérante de blocage (32) est disposée sur le rebord périphérique extérieur de la lentille et fait saillie dans la gorge. Cette protubérance de blocage est pourvue d'une première surface annulaire de blocage (32a) et d'une seconde surface annulaire de blocage (32b) parallèles et espacées, lesquelles sont situées en regard respectivement de la surface arrière de blocage et de la surface avant de blocage. Les première et seconde surfaces de blocage sont en général parallèles à la dimension s'étendant entre les surfaces en regard du rebord périphérique intérieur.
PCT/US1986/000310 1986-02-13 1986-02-13 Paire de lunettes WO1987005123A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU55156/86A AU5515686A (en) 1986-02-13 1986-02-13 Eye glass assembly
PCT/US1986/000310 WO1987005123A1 (fr) 1986-02-13 1986-02-13 Paire de lunettes
EP86901624A EP0258225A1 (fr) 1986-02-13 1986-02-13 Paire de lunettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1986/000310 WO1987005123A1 (fr) 1986-02-13 1986-02-13 Paire de lunettes

Publications (1)

Publication Number Publication Date
WO1987005123A1 true WO1987005123A1 (fr) 1987-08-27

Family

ID=22195375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/000310 WO1987005123A1 (fr) 1986-02-13 1986-02-13 Paire de lunettes

Country Status (3)

Country Link
EP (1) EP0258225A1 (fr)
AU (1) AU5515686A (fr)
WO (1) WO1987005123A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850863A1 (de) * 1998-11-04 2000-05-18 Hemaris Gmbh Chur Mittelteil einer Vollrandfassung für eine Brille
EP1006392A1 (fr) * 1998-06-23 2000-06-07 Utsumi Optical Products Inc. Structure de blocage des verres pour montures de lunettes
AT500218A1 (de) * 2004-05-06 2005-11-15 Silhouette Int Schmied Ag Brillengestell
AT502347B1 (de) * 2005-09-02 2008-10-15 Rodenstock Gmbh Brillenfassung, brille sowie verfahren zum herstellen einer brillenfassung und einer brille
WO2012051810A1 (fr) * 2010-10-22 2012-04-26 Arts Optical Company Limited Dispositif de monture de lunettes adapté à des verres à diverses formes de bord
DE102016114125A1 (de) * 2016-07-29 2018-02-01 Walter Bergner Verfahren zur Einpassung von Brillengläsern in Vollrand-Brillenrahmen
US11326857B2 (en) 2020-06-30 2022-05-10 Brixun Corporation Eyewear lens coupling system
US20220280344A1 (en) * 2016-08-12 2022-09-08 100% Speedlab, Llc Multi-thickness goggle lenses
EP4258041A1 (fr) 2019-02-11 2023-10-11 Lindberg A/S Système de lunettes à auto-blocage
US11886048B2 (en) 2016-12-27 2024-01-30 Mitsui Chemicals, Inc. Lens and eyewear

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1520977A (en) * 1921-06-22 1924-12-30 Bausch & Lomb Ophthalmic mounting
US2132106A (en) * 1936-06-20 1938-10-04 Fosgood Corp Ophthalmic mounting
FR1257074A (fr) * 1960-02-15 1961-03-31 Perfectionnements apportés à la fixation des verres de lunettes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1520977A (en) * 1921-06-22 1924-12-30 Bausch & Lomb Ophthalmic mounting
US2132106A (en) * 1936-06-20 1938-10-04 Fosgood Corp Ophthalmic mounting
FR1257074A (fr) * 1960-02-15 1961-03-31 Perfectionnements apportés à la fixation des verres de lunettes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006392A1 (fr) * 1998-06-23 2000-06-07 Utsumi Optical Products Inc. Structure de blocage des verres pour montures de lunettes
EP1006392A4 (fr) * 1998-06-23 2001-09-12 Utsumi Optical Products Inc Structure de blocage des verres pour montures de lunettes
DE19850863A1 (de) * 1998-11-04 2000-05-18 Hemaris Gmbh Chur Mittelteil einer Vollrandfassung für eine Brille
US6074058A (en) * 1998-11-04 2000-06-13 Hemaris Gmbh Central piece of a full-rim frame for eyeglasses
US6241353B1 (en) 1998-11-04 2001-06-05 Hemaris Gmbh Method for making a central piece of a flexible full-rim frame for eyeglasses
DE19850863C2 (de) * 1998-11-04 2001-09-13 Hemaris Gmbh Chur Verfahren zur Herstellung eines Brillen-Mittelteils
AT500218B1 (de) * 2004-05-06 2006-01-15 Silhouette Int Schmied Ag Brillengestell
WO2005109079A1 (fr) * 2004-05-06 2005-11-17 Silhouette International Monture de lunettes
AT500218A1 (de) * 2004-05-06 2005-11-15 Silhouette Int Schmied Ag Brillengestell
AT502347B1 (de) * 2005-09-02 2008-10-15 Rodenstock Gmbh Brillenfassung, brille sowie verfahren zum herstellen einer brillenfassung und einer brille
WO2012051810A1 (fr) * 2010-10-22 2012-04-26 Arts Optical Company Limited Dispositif de monture de lunettes adapté à des verres à diverses formes de bord
DE102016114125A1 (de) * 2016-07-29 2018-02-01 Walter Bergner Verfahren zur Einpassung von Brillengläsern in Vollrand-Brillenrahmen
WO2018019338A1 (fr) 2016-07-29 2018-02-01 Walter Bergner Procédé d'encastrement de verres de lunettes dans une monture cerclée
DE102016114125B4 (de) 2016-07-29 2018-05-03 Walter Bergner Verfahren zur Einpassung von Brillengläsern in Vollrand-Brillenrahmen
US20220280344A1 (en) * 2016-08-12 2022-09-08 100% Speedlab, Llc Multi-thickness goggle lenses
US11730628B2 (en) * 2016-08-12 2023-08-22 100% Speedlab, Llc Multi-thickness goggle lenses
US11886048B2 (en) 2016-12-27 2024-01-30 Mitsui Chemicals, Inc. Lens and eyewear
EP4258041A1 (fr) 2019-02-11 2023-10-11 Lindberg A/S Système de lunettes à auto-blocage
US11326857B2 (en) 2020-06-30 2022-05-10 Brixun Corporation Eyewear lens coupling system

Also Published As

Publication number Publication date
AU5515686A (en) 1987-09-09
EP0258225A1 (fr) 1988-03-09

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