WO2007141810A1 - Procédé de décoration de lunettes - Google Patents

Procédé de décoration de lunettes Download PDF

Info

Publication number
WO2007141810A1
WO2007141810A1 PCT/IT2006/000418 IT2006000418W WO2007141810A1 WO 2007141810 A1 WO2007141810 A1 WO 2007141810A1 IT 2006000418 W IT2006000418 W IT 2006000418W WO 2007141810 A1 WO2007141810 A1 WO 2007141810A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
spectacles
decoration
injection
frame
Prior art date
Application number
PCT/IT2006/000418
Other languages
English (en)
Inventor
Massimiliano Tabacchi
Original Assignee
SAFILO SOCIETÁ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A.
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 SAFILO SOCIETÁ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. filed Critical SAFILO SOCIETÁ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A.
Priority to PCT/IT2006/000418 priority Critical patent/WO2007141810A1/fr
Publication of WO2007141810A1 publication Critical patent/WO2007141810A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/02—Ornaments, e.g. exchangeable
    • 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

Definitions

  • the present invention relates to a method of producing decorations on spectacles, be they corrective spectacles, sunglasses, or protective spectacles, according to the preamble to Claim 1.
  • decoration is therefore used in the present context in an absolutely general way, to indicate any type of additional element produced on the spectacles, either on the lenses (or the lens if the spectacles have a single wrap-around lens) or on the frame, such as, for example, characters, a pattern, etc.
  • the decoration it is considered necessary in the field for the decoration to be durable, that is, not to alter or come off over time, with particular reference, for example, to the characters of the name identifying the spectacles which is generally produced by painting or printing onto the spectacle frame and can easily become detached or discoloured after a fairly short period of time.
  • the decoration should preferably not substantially alter the shape of the spectacles, for example, by having projections or recesses which could be annoying in use and which facilitate detachment of the decoration or catching of the spectacles on external elements (the hair) during normal use.
  • the problem underlying the present invention is that of providing a method of producing a decoration on a pair of spectacles, as well as spectacles produced in accordance with the method, which are designed structurally and functionally to overcome the limitations set out above with reference to the prior art mentioned.
  • This problem is solved by the present invention by a method and spectacles according to the appended claims.
  • Figure 1 is a schematic, sectioned view of a portion of an embodiment of spectacles produced in accordance with the method of the present invention, during a first processing step
  • Figure 2 is a schematic, sectioned view of the portion of Figure 1 during a second step of the method of the invention
  • Figure 3 is a schematic, sectioned view of the portion of Figure 1 during a third step of the method of the invention
  • Figure 4 is a perspective view of a pair of spectacles produced in accordance with the present invention
  • Figure 5 is a schematic view of a portion of the apparatus used in the method of the present invention.
  • a pair of spectacles produced in accordance with the present invention is generally indicated 1 in the appended drawings.
  • the spectacles 1, a preferred embodiment of which can be seen as a whole in Figure 4, comprise a frame 2 to which lenses 3 are fixed.
  • the type of frame 2 and/or lenses 3 is arbitrary and does not affect the application of the method of the invention; the spectacles may in fact be sunglasses, corrective spectacles (and hence with corrective lenses 3), or protective spectacles and may include two lenses 3 or a single lens, for example, of the wrap-around type.
  • the frame 2 may also be rimless, that is, without lens-holding rims.
  • the frame 2 may be made of metal, composite materials, or plastics materials, with a preference for the latter material. If the material is plastics material, it may or may not be transparent. Moreover, the lenses
  • (or lens) 3 may be made of glass or plastics material. However, other materials (for example, ceramics, etc.) are not excluded.
  • the frame 2 comprises a frame portion 2a defining a bridge 8 extending between two lenses 3 and a pair of shoulders 4 by which the frame portion 2a is hinged to a pair of conventional arms 5.
  • a decorative element 10 described in greater detail below is also formed in the spectacles 1, in a portion Ia thereof.
  • the spectacle portion Ia in which the decoration 10 is formed is widely variable; the decoration may be positioned on the frame 2 or even on one or both lenses 3.
  • the decoration 10 may be produced on the arms 5, on the bridge 8, or on the shoulder 4.
  • the decoration 10 is of any shape and is delimited by an outline 11, in particular a closed curve, defining an internal area 12 which is preferably filled with a material having a colour different from the colour of the frame and/or of the lenses (according to where the decoration is produced) so that there is a visual contrast between the decoration and the adjoining spectacle portion Ia for improved visibility.
  • the decoration may be produced by means of a plurality of closed curves 11 and each internal area 12 thus defined by each curve 11 may comprise in its interior a colour different from or the same as the remaining areas forming part of the same decoration.
  • the closed outline curve/s 11 of the decoration may define a pattern, optionally an abstract pattern, one or more alphanumeric characters, a logo, etc., or a combination thereof.
  • the dimensions may be extremely small, for example, the decoration 10 may comprise characters the dimensions, that is the thickness, of which are of the order of fractions of a millimetre, for example, 0.5 mm.
  • the decoration of Figure 4 is produced in one of the lenses 3, in particular in a lateral portion Ia thereof, and represents a stylized dragon with a single outline 11 defining a red internal area 12.
  • the decoration 10 is produced by means of the method of the invention which is described below.
  • the portion (or portions for several decorations) Ia of the spectacles 1 on which the decoration 10 is produced is selected.
  • a decoration seat 15 is formed therein.
  • the seat 15 comprises a recess produced on the surface S of the portion Ia to be decorated and has a shape which is identical to that of the decoration 10 to be produced.
  • an outline 11 is defined which delimits the seat 15 and is also the peripheral boundary of the decoration 10.
  • the area of the recess forming the seat 15 corresponds to the internal area 12 of the decoration 10.
  • the seat 15 may be formed by machining with the removal of material from the surface S of the spectacles, in particular, preferably by milling. In this latter case, a milling tool (not shown) is moved over the surface S of the spectacle portion Ia with its axis arranged perpendicularly relative to that surface.
  • the use of a numerically controlled machine is particularly advantageous for producing the recess defining the seat 15, owing to the precise and repeatable execution that can be achieved with this machinery.
  • the seat 15 may be formed by surface engraving by LASER technology.
  • the depth of the seat 15 is preferably a few tenths of a millimetre. However, greater depths, which ensure a high degree of adhesion of the solid filling material to the walls of the seat (step detailed below), are not excluded although deep seats also involve greater difficulties in the inoculation of the material (with possible aesthetic defects due, for example, to air bubbles in the resin) when the openings of the seats 15 to the exterior are particularly narrow.
  • the depth of the seat 15 therefore represents a compromise between technical aspects of the method of the invention, decoration quality, and aesthetic requirements.
  • the minimum width of the seat 15 that is, the minimum possible distance between any two points of the closed curve 11, it is a few tenths of a millimetre; the selection of the value is based on stylistic selections and on the dimensions of the tools available for hollowing out the seat 15.
  • the seat 15 With regard to the shape of the cross-section of the seat 15 (visible in Figure 1), it is preferably rectangular, but different geometrical shapes may be produced in accordance with the present invention.
  • the seat 15 (and consequently the decoration 10) may be produced both on flat surfaces S of the element Ia or on curved surfaces.
  • the seat 15 produced in the first step of the method of the invention is at least partially filled with material 16 in the liquid state. The filling is performed by an injection technique.
  • the material 16 to be deposited is preferably in the liquid state at the moment when the injection is performed and then sets after it has been deposited in the seat.
  • the setting may take place as a result of exposure to air or by heating, or even by treatment with predetermined radiation.
  • the material 16 for filling the seat 15, which material preferably has a colour distinct from that of the material of the spectacle element Ia in which the seat 15 is formed, may be constituted by a conventional single-component polyvinyl chloride (PVC) resin for casting and, after the seat 15 has been filled, its setting may be accelerated by means of a hot-air flow (step not shown), taking a few minutes altogether.
  • PVC polyvinyl chloride
  • Another preferred material 16 is silicone resin which sets upon exposure to air.
  • any synthetic material 16 which can be brought to the liquid state for example, a single-component or two-component plastics material, is suitable for the purposes of the method of the invention.
  • the material 16 injected into the seat 15 is fixed thereto preferably by the "filling" of micro-irregularities and micro-cavities (porosities) of the material constituting the spectacle element Ia in which the decoration 10 is produced, which is preferably plastics material or metal, with the filling material 16, which then sets.
  • the material 16 is preferably deposited by injection by means of one or more syringes 17 each provided with a suitable injection needle or nozzle
  • the syringes 17 are supplied, by means of tubes 19, from one or more containers (not shown) of the material 16 to be injected.
  • the syringes 17 are fixed to the same support or "head" 20 the position of which relative to the spectacle element Ia to be decorated can be adjusted manually or automatically in conventional manner.
  • the operation of the syringes 17, which is constituted by a suction/injection cycle, is brought about by a compressed-air device (also not shown).
  • the portion Ia to be decorated is placed on a suitable support element 22 so that the opening of the seat 15 to be filled faces as upwardly as possible.
  • the head 20 with the syringes and the portion Ia are then moved towards one another until the head 20 is above the portion Ia with the nozzles 18 facing towards the seat 15 for the decoration.
  • the head 20 is then lowered until the tips of the needles 18 are preferably a few tenths of a millimetre from the surface S defining the internal area 12 of the seat 15.
  • the needles 18 thus preferably do not touch the surface S of the spectacles 1, to prevent damage thereto.
  • the syringes 17 are operated, preferably automatically, and the filling material 16 is injected into the seat 15 in the liquid state. It should be noted that no "mask" or mould is provided for restricting the area affected by the deposition, neither is any other system provided for conveying the material 16 towards the seat 15 to be filled; times are thus reduced and the injection process simplified.
  • the quantity of material 16 injected is preferably such that the seat 15 is completely filled, that is, such that the set material 16 is flush with the surface S of the portion Ia in which the decoration 10 is produced.
  • the invention provides for the production of decorations in which the set material 16 projects from the seat 15 or in which the seat 15 is filled only partially so that the surface S of the spectacles has a recess in the region of the decoration 10. Since the depth of the seat 15 is preferably a few tenths of a millimetre, the thickness of the material 16 deposited is preferably also a few tenths of a millimetre so as to be "flush" with the surface S outside the seat 15. With regard to the spatial orientation of the portion Ia of the surface S to be decorated during the step of the injection of the material 16, if it is a flat surface, no particular measures are required to prevent leakage from the seat 15 of the liquid material 16 injected as described above.
  • the method of the invention provides for the step of the injection of the material 16 preferably to comprise a series of micro-injections, each with the effect of depositing a very thin layer of material 16, each layer preferably having a thickness of between 0.01 mm and 0.1 mm, so that it cannot overflow from the seat 15 even when there is some inclination from the horizontal.
  • the thin layer of material 16 For each micro-injection step, there is then a waiting stage for the thin layer of material 16 to set (the small amount of material 16 involves short setting times), after which the next thin layer is injected.
  • the rim of the seat 15 is thus reached progressively in successive steps without causing the liquid material 16 to run out of the recess owing to the curvature.
  • the preferred method of performing the injection step according to the method of the invention is so-called “spot" deposition; the syringes 17 (and therefore the needles 18) are arranged adjacent the entire internal area 12 of the decoration 10, each needle having a predetermined portion of seat 15 to fill.
  • the needles 18 inject simultaneously (with a single injection) onto their own portions of the internal surface S of the seat 15; since the material 16 preferably has a low viscosity, it tends to spread out from each injection point to the immediately surrounding areas with the result that the material 16 deposited by a limited number of syringes can immediately extend over the whole internal surface of the seat 15.
  • the number of syringes 17 to be fitted on the head 20 depends on the total size of the area 12 of the decoration, meaning the extent of the surface S affected by the deposition. The larger the size, the greater the number of syringes 17 must be for a given syringe volume.
  • the distance between one syringe 17 and another in the head 20 depends on the shape of the decoration 10 to be produced. For example if, in a given region, the seat 15 is wider and/or or longer than in another region, a greater density of syringes may be required locally to compensate for the increased travel required by the advancing front of the material 16 which spreads out when injected.
  • the method of the invention optionally provides for the head 20 to be fitted with syringes 17 of different capacities, and possibly with further differentiation in the flow-rates of the needles 18, so as to optimize the filling of the seat 15 when it has regions with different shapes and sizes (the larger syringes will fill the wider areas, whereas the smaller syringes will perform a precision deposition on the narrower areas).
  • the deposition may be performed by the passage of a single syringe 17 along the entire seat (with simultaneous release of material 16); that is, the head 20 has only one syringe which is moved so as to pass over the area 12 of the seat 15.
  • this method has a poor capability to optimize the quantity of material 16 deposited over all of the regions of the decoration.
  • it has the disadvantage of taking a longer time for the injection of the entire seat 15.
  • the amount of material 16 in the syringes 17 is regulated in a manner such that, with injection by means, for example, of an automatic machine, the level of the filling material 16 injected does not exceed the height of the lateral walls of the seat (to avoid wastage of material) 15 but is initially flush with the external edges of the seat 15.
  • the method of the invention provides for an optional additional step.
  • the automatic injection is followed by a manual injection with the use of a single syringe 17 operated, for example, "free-hand” by an operator with the purpose of bringing the material 16 to the level of the surface of the piece.
  • a wiper blade is passed (by hand, tool not shown) over the surface S of the portion Ia of the spectacles 1 where the injection was performed.
  • the spectacles 1 are placed in a suitable space so that the resin can set.
  • the decorated piece must not be inclined during the setting step.
  • a preferred embodiment of the present invention also provides for the possibility of supplying different syringes 17 with filling materials 16 of different colours so as to produce decorations 10 with several colours by distributing them on different areas of the seat 15 to be filled.
  • the method of the invention thus achieves the proposed objectives, affording many advantages over the prior art mentioned.
  • the above-described decoration method permits the production of characters, logos, etc. that are characterized by particularly small dimensions combined with the capability to form the decoration flush with the external surface of the piece decorated. Both of these aspects are extremely advantageous for the purposes of producing aesthetically pleasing decorations or marks without "projections" which could cause damage or annoyance.
  • the decoration ensures optimal adhesion to the material of the piece decorated and also ensures very good durability over time in comparison with all of those techniques which are based on the deposition of paints, inks, or adhesive labels.
  • Those techniques in fact involve the deposition of thin layers of decorative material, that is, a small quantity of material which will degrade over time (owing to the effect of radiation, aggressive environments, etc.).
  • the present invention in contrast, involves the deposition of a thicker layer of decorative material (a few tenths of a mm, as stated) which is consequently more durable.
  • the method is simplified in comparison with other techniques used in the field such as, for example, a transfer printing process in which writing or images are transferred generally with indelible ink, since it is not necessary to produce suitable "cliches" (engraved blocks) for each individual decoration.

Abstract

L'invention concerne un procédé de décoration (10) d'une paire de lunettes (1), le procédé comprenant une étape de formation d'une cavité (15) dans une région (1a) des lunettes (1) par élimination d'une partie du matériau de la surface (S) de la région (1a), et une étape d'injection d'un matériau de remplissage (16) dans la cavité (15) de façon à remplir la cavité (15) au moins partiellement.
PCT/IT2006/000418 2006-06-05 2006-06-05 Procédé de décoration de lunettes WO2007141810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000418 WO2007141810A1 (fr) 2006-06-05 2006-06-05 Procédé de décoration de lunettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000418 WO2007141810A1 (fr) 2006-06-05 2006-06-05 Procédé de décoration de lunettes

Publications (1)

Publication Number Publication Date
WO2007141810A1 true WO2007141810A1 (fr) 2007-12-13

Family

ID=37665405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000418 WO2007141810A1 (fr) 2006-06-05 2006-06-05 Procédé de décoration de lunettes

Country Status (1)

Country Link
WO (1) WO2007141810A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017537353A (ja) * 2014-11-27 2017-12-14 サフィーロ・ソシエタ・アツィオナリア・ファブリカ・イタリアナ・ラボラツィオーネ・オッチアリ・エス・ピー・エー 眼鏡用レンズを製造する方法、その方法で作製されたレンズ、およびそのレンズを備えた眼鏡

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003154A1 (fr) * 1983-02-04 1984-08-16 Poul Petersen Cadre de lunettes
DE3503716A1 (de) * 1985-02-04 1986-08-07 Gerd 8037 Olching Wilsdorf Verfahren zum anbringen eines dauerhaften und wertigen markenzeichens an brillen
US4665598A (en) * 1984-07-26 1987-05-19 Murai Optical Company, Ltd. Eyeglass frame decorated with stained-glass patterns and method of making the same
FR2606891A1 (fr) * 1986-11-17 1988-05-20 Prim Verres Sa Procede de decoration des lunettes par cristaux liquides
DE4319493A1 (de) * 1993-06-11 1994-12-15 Optik Partner Ag & Co Brillenfassung sowie Verfahren zur Herstellung einer Brillenfassung
US5580498A (en) * 1992-03-13 1996-12-03 Menicon Co., Ltd. Method of producing contact lens with identifying mark permeating into lens
US5856860A (en) * 1995-03-03 1999-01-05 Vision-Ease Lens, Inc. Multi-focal optical elements

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003154A1 (fr) * 1983-02-04 1984-08-16 Poul Petersen Cadre de lunettes
US4665598A (en) * 1984-07-26 1987-05-19 Murai Optical Company, Ltd. Eyeglass frame decorated with stained-glass patterns and method of making the same
DE3503716A1 (de) * 1985-02-04 1986-08-07 Gerd 8037 Olching Wilsdorf Verfahren zum anbringen eines dauerhaften und wertigen markenzeichens an brillen
FR2606891A1 (fr) * 1986-11-17 1988-05-20 Prim Verres Sa Procede de decoration des lunettes par cristaux liquides
US5580498A (en) * 1992-03-13 1996-12-03 Menicon Co., Ltd. Method of producing contact lens with identifying mark permeating into lens
DE4319493A1 (de) * 1993-06-11 1994-12-15 Optik Partner Ag & Co Brillenfassung sowie Verfahren zur Herstellung einer Brillenfassung
US5856860A (en) * 1995-03-03 1999-01-05 Vision-Ease Lens, Inc. Multi-focal optical elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017537353A (ja) * 2014-11-27 2017-12-14 サフィーロ・ソシエタ・アツィオナリア・ファブリカ・イタリアナ・ラボラツィオーネ・オッチアリ・エス・ピー・エー 眼鏡用レンズを製造する方法、その方法で作製されたレンズ、およびそのレンズを備えた眼鏡

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