WO2016004540A1 - Optical method for making at least one component of a watch movement invisible - Google Patents

Optical method for making at least one component of a watch movement invisible Download PDF

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Publication number
WO2016004540A1
WO2016004540A1 PCT/CH2014/000098 CH2014000098W WO2016004540A1 WO 2016004540 A1 WO2016004540 A1 WO 2016004540A1 CH 2014000098 W CH2014000098 W CH 2014000098W WO 2016004540 A1 WO2016004540 A1 WO 2016004540A1
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WO
WIPO (PCT)
Prior art keywords
component
watch
movement
mechanical
treatment
Prior art date
Application number
PCT/CH2014/000098
Other languages
French (fr)
Inventor
Yannick PINTUS
Micke PINTUS
Jean-Luc Perrin
Etienne Crozier
Jean-Luc Thuliez
Original Assignee
Richemont International Sa
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 Richemont International Sa filed Critical Richemont International Sa
Priority to PCT/CH2014/000098 priority Critical patent/WO2016004540A1/en
Publication of WO2016004540A1 publication Critical patent/WO2016004540A1/en

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B29/00—Frameworks
    • G04B29/02—Plates; Bridges; Cocks
    • G04B29/022—Bridges
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/02—Time pieces of which the clockwork is visible partly or wholly
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/04—Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc

Definitions

  • the present invention relates to a method for rendering at least one component of an apparent watch movement invisible in the visible wavelength spectrum, housed inside a case, this case being closed at least on its face. frontal by a watch glass, this component being made of a transparent material.
  • the present invention proposes to overcome the drawbacks of the known prior art by developing a method that makes it possible to "make disappear” from the visible spectrum, centered around 600 nm, one or more mechanical components having simple or complex shapes, which form the constituent elements of the movement of a watch.
  • said at least one treatment consists of performing an antireflection treatment of said watch glass and at least one antireflection treatment of said at least one component of said mechanical watch movement, this treatment being carried out in such a way that the spectral transmission curve said component is substantially matched to that of the watch glass.
  • Said at least one treatment advantageously consists in performing an antireflection treatment of said watch glass and at least one treatment consisting of reducing the reflecting surface of said at least one component of said mechanical watch movement.
  • said antireflection treatment of said watch glass is coordinated with the antireflection treatment of said at least one component of said mechanical watch movement to reduce its reflection.
  • said antireflection treatment consists in depositing at least one thin layer of an antireflection material respectively on the watch glass and on said at least one component of said mechanical watch movement and / or depositing several thin layers superimposed on the glass of watch and on said component.
  • said antireflection treatment consists of applying several layers of different materials, of different refractive indices and with determined thicknesses for each of the layers.
  • the materials to be deposited are selected according to their refractive index and the thickness of the layer to be deposited is determined.
  • said at least one component of said mechanical watch movement is made by means of a polymer according to an injection molding process.
  • the materials applied in thin layers are advantageously chosen from the following group: Titanium Oxide (T1O2), Silicon Oxide (S1O2) or a mixture of these materials.
  • a texturing of the surface of said component of said mechanical watch movement is made invisible.
  • said texturing of said component is made to render invisible directly to the molding by mechanical or chemical machining of the walls of the injection mold.
  • said texturing of said component is performed by mechanical machining or chemical etching of said component of said mechanical watch movement to be rendered invisible.
  • said texturing of said component is carried out by nano-indentation of said component of said mechanical watch movement to be rendered invisible.
  • a variant which may be complementary to other embodiments, can be introduced into said housing a fluid whose refractive index is substantially equal to that of said at least one component of said mechanical watch movement.
  • FIG. 1 is a sectional view of an embodiment of a mechanical movement wristwatch illustrating in particular at least one component to be rendered invisible to the eye according to the method of the invention
  • FIG. 2 is a view which schematically represents the principle of the method of the invention
  • FIG. 3 is a partial view which illustrates at least a part of a watch of which at least one of the components of the mechanical movement is treated according to the method of the invention.
  • FIG. 4 is a partial perspective view of the watch illustrating in particular a component which is rendered invisible by treatment by the method of the invention.
  • One of the objectives of the present invention is to remove from view certain components of a watch movement, such as for example a part called lower bridge or upper bridge mounted inside the box, these elements being positioned between the watch glass and the bottom of the watch case.
  • the goal is to make this or these components invisible to the eye.
  • To make a component invisible to the eye it is necessary to reduce or even eliminate the amount of light that it reflects when it is illuminated by light coming from the outside, that is to say having crossed the watch glass.
  • the visible light spectrum is between 400 and 800 nanometers. It is therefore essential to reduce the reflected light that is in this spectrum and more particularly that which is in a light spectrum around 600 nanometers.
  • One of the peculiarities of the invention consists in producing components of complex shapes made of polymers according to an injection molding technology, which makes it possible both to structure their surface and / or to effect an antireflection type treatment of this surface. applying one or more thin layers of materials having the desired characteristics.
  • oxides such as titanium oxide ( ⁇ 2) and silicon oxide (S1O2). It has been calculated that in order to attenuate or suppress the reflection, it was advantageous to carry out, on the one hand, a treatment of the watch glass and, on the other hand, to perform a treatment of the component (s) to be retracted or masked.
  • the multilayer antireflection treatment makes it possible to mask the component over a large part of the visible spectrum, in particular two or three superimposed layers.
  • Figure 1 shows in the form of a cross-sectional view, a watch 10 of which at least one component of the mechanical movement 11, housed in a housing 12 must be made invisible to the eye.
  • the housing 12 is closed at its upper face by a watch glass 13 and at its underside by a bottom 14 which may be metal or glass or the like.
  • the movement 11 disposed inside the housing is visible on both sides.
  • the treatment must be adapted to both the watch glasses, the one above and the one below, and it will of course also be necessary to perform the treatment on both surfaces of said component to be removed from view, to such that this component is neither visible from above nor from below.
  • the movement 11 is carried by supports 15 of a substantially central plate 16, that is to say positioned substantially, at least in the example shown, more or less equidistant between the watch glass 13 and the bottom 14 of the housing 12.
  • the plate 16 carries an upper bar bridge 17, which is preferably the component that is to be removed from view, and a lower bar 18 defining a space in which is housed a tourbillon cage 19.
  • Said The tourbillon cage 19 consists essentially of an upper bridge 20 and a lower bridge 21 respectively disposed on either side of the plate 16.
  • the upper bridge 20 carries an upper bearing bridge 22 and the lower bridge 21 carries a bridge lower bearing 23 which serve to maintain the ends 24 and 25 of a central pivot 26 on which is mounted a vortex 27.
  • the aim is, for example to make invisible the upper deck 17 and the elements that compose it and to keep visible the vortex 27 and some other unrepresented secondary components disposed inside the tourbillon cage 19.
  • the upper bridge 17 In order to make the upper bridge 17 invisible, it is produced by injection into a transparent material, for example a transparent polymer, and an antireflection treatment is advantageously carried out on its top surface 17, advantageously multilayer, which is coordinated with the glare treatment, which is advantageously multilayered. is also performed on the glass 25 closing the housing 12 of the watch 0. As a result, the upper bridge 17 disappears in view and only the vortex 23 is apparent.
  • a transparent material for example a transparent polymer
  • FIG. 2 illustrates the principle of the method of the invention.
  • the arrow A1 represents the light emitted by an external light source, incident on the glass 25 of the watch 10.
  • the arrow A2 represents the light reflected by the watch glass. Since the watch glass is transparent, the reflected light is very weak.
  • the arrow A3 represents the light transmitted by the watch glass 25.
  • the arrow A4 represents the light transmitted by the components of the cage 24.
  • the treatment of the components of the cage is the same as the treatment of the watch glass 25, so that the wavelengths transmitted and reflected by the watch glass are the same as those of the light transmitted and reflected by the cage. All the light transmitted by the glass is transmitted by the components of the cage, so that no reflection is emitted by said components.
  • the arrow A5 represents the light reflected by the opaque part constituting the vortex 23. This light is a part of the light transmitted by the components of the cage and contains no wavelength that can be reflected by these components since these lengths of light waves were filtered by the watch glass 25 at the entrance of the light in the watch 10.
  • the arrow A6 represents the light transmitted by the components of the cage 24. This light is reflected by the opaque piece of the vortex 23 since no Another wavelength can not be reflected by the components of the cage 24, these wavelengths having been filtered at the entrance of the light in the watch through the glass.
  • Arrow A7 represents the light transmitted by the watch glass. This light is the same as that transmitted by the components of the cage 24 since no wavelength can be reflected by the glass 25, these wavelengths having been filtered by the glass at the entrance of the light in the watch.
  • Figure 3 illustrates the method of making certain components of the watch invisible. It consists in performing an antireflection treatment of both the watch glass and the components that we want to make invisible.
  • This antireflection treatment amounts to depositing one or more layers of antireflection substances such as titanium oxide (TiO 2), silicon oxide (SiO 2) or a mixture of these materials on the outer surface, the inner surface or both surfaces. of glass 25 of the watch 10. It is appropriate to choose the indices and the thicknesses of each of the layers.
  • a treatment having consisted of depositing a first layer 25a of an antireflection material of index n1 and of thickness e1, then a second layer 25b of a antireflection material of index n2 and thickness e2 and finally a third layer 25c of antireflection material of index n3 and thickness e3.
  • the three layers were deposited on the outer surface, but could have been deposited on the inner surface or both on both surfaces.
  • the number of layers, the nature of the antireflection material, the thickness of the layer and the side of the application may vary depending on the results that are desired.
  • This part of the treatment is completed by an identical treatment of the components that one wishes to make invisible.
  • the same mono or multilayer treatment is carried out in the same order with the same materials.
  • FIG. 4 illustrates a watch 10 with a part of the movement 1 1 housed in the case 12 and which appears on the plate 13 under the watch glass 25.
  • the method of the invention By the application of the method of the invention, most of the components of the movement are rendered invisible. Only the vortex 23 which is made of an opaque material is visible.
  • a solution that makes it possible to achieve the invisibility of said one or more components in the three dimensions, whatever the angle of incidence of the gaze, consists in introducing into the casing 12 a fluid, preferably a liquid whose refractive index is substantially equal, or at least as close as possible to the refractive index of said component to make invisible to the eye.
  • This measure can be applied alone or in complementarity with the other processing steps as described above.
  • the present invention is not limited to the embodiments described, but may undergo various modifications or variations obvious to those skilled in the art.
  • the number of layers, their arrangement and the nature of the materials can be varied.
  • the refractive indices of the polymers used must be high of the order of 1, 8.
  • the components are preferably made with transparent injectable materials, which makes it possible to obtain complex shapes. Nevertheless a manufacture with machined parts remains possible.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

The invention relates to a method for making at least one component of a watch movement (11) invisible, which watch movement is accommodated inside a housing (12) of a watch (10) which is closed at least on the front surface thereof by means of a watch glass (25) made of sapphire, diamond or the like. Said component is advantageously the upper bridge (17) of this mechanical movement (11). Advantageously, the spectral transmission curve of said watch glass (25) is measured and said component is processed at least once such that the spectral transmission curve thereof at least approximately matches that of the watch glass (25). This processing comprises placing for example three stacked layers of antireflective materials (25a, 25b, 25c) on both the glass (25) of a watch (10) and the component to be made invisible.

Description

PROCEDE OPTIQUE POUR RENDRE INVISIBLE AU MOINS UN COMPOSANT D'UN MOUVEMENT DE MONTRE  OPTICAL METHOD FOR MAKING INVISIBLE AT LEAST ONE COMPONENT OF A WATCH MOVEMENT
Domaine technique Technical area
La présente invention concerne un procédé pour rendre invisible dans le spectre des longueurs d'ondes visibles, au moins un composant d'un mouvement de montre apparent, logé à l'intérieur d'un boîtier, ce boîtier étant fermé au moins sur sa face frontale par un verre de montre, ce composant étant réalisé en un matériau transparent. The present invention relates to a method for rendering at least one component of an apparent watch movement invisible in the visible wavelength spectrum, housed inside a case, this case being closed at least on its face. frontal by a watch glass, this component being made of a transparent material.
Pour des produits horlogers dits de haute horlogerie, comportant des mouvements mécaniques apparents, il peut être souhaitable de masquer certains composants pour les rendre partiellement ou totalement invisibles, tout en conservant leurs fonctions mécaniques. Ceci permet de mettre en valeur certains composants du mouvement et d'en faire disparaître certains autres au regard. Le but recherché est de donner aux horlogers une liberté esthétique nouvelle permettant de mettre en évidence certaines fonctions en faisant disparaître visuellement certaines autres fonctions de telle manière qu'elles n'apparaissent plus au regard. Technique antérieure For watchmaking products known as Haute Horlogerie, with visible mechanical movements, it may be desirable to mask certain components to make them partially or totally invisible, while retaining their mechanical functions. This makes it possible to highlight certain components of the movement and to make others disappear from view. The goal is to give watchmakers a new aesthetic freedom to highlight certain functions by visually removing some other functions in such a way that they no longer appear to the eye. Prior art
Traditionnellement, des pièces peuvent être partiellement effacées du regard, en utilisant des matériaux transparents aux longueurs d'ondes visibles, tels que le verre, le quartz ou le diamant par exemple. Cependant ces matériaux sont naturellement d'un prix élevé et leur mise en forme est techniquement compliquée et économiquement extrêmement coûteuse. De plus les pièces connues ont des formes simples, planes ou toriques en raison des difficultés de fabrication. Il n'existe actuellement pas de procédé permettant de réaliser des pièces d'horlogerie de formes complexes, transparentes et invisibles à l'œil nu et ayant les caractéristiques mécaniques requises par les fonctions dans le domaine horloger. Des tentatives ont été faites pour rendre un mouvement de montre au moins partiellement invisible. La demande de brevet suisse CH 700657 A1 décrit une montre appelée « Montre mystérieuse » caractérisée en ce qu'elle comporte un disque ou un anneau transparent pour transmettre les déplacements de la couronne au mouvement. La demande de brevet internationale WO 95/10802 décrit une montre analogique transparente qui est caractérisée en ce qu'elle est constituée d'un certain nombre de composants transparents. La demande de brevet européen EP 2149540 A1 décrit une pièce horlogère transparente et son procédé de fabrication caractérisé en ce qu'elle est constituée d'un élément transparent ayant un revêtement antireflet ayant un indice de réflexion élevé réalisé en nitrure de silicium. Le brevet allemand DE 3820547 C2 décrit un objet en verre ayant une faible capacité de réflexion, cette caractéristique étant obtenue par un traitement spécifique de la surface pour la rendre matte. La publication japonaise JP 2009085758 A décrit un objet entraîné par une force magnétique, que l'on veut rendre transparent en le plongeant dans un liquide contenu dans un conteneur transparent. L'objet entraîné est partiellement transparent et son indice de réfraction est sensiblement égal à celui du liquide dans le conteneur. Le brevet américain US 2011/0176396 A1 qui décrit une montre solaire qui comporte un verre pourvu d'un revêtement antireflet appliqué sur les deux faces du verre de montre. Traditionally, parts can be partially erased from view, using transparent materials at visible wavelengths, such as glass, quartz or diamond, for example. However, these materials are naturally of a high price and their shaping is technically complicated and economically extremely expensive. In addition known parts have simple shapes, planar or toric because of manufacturing difficulties. There is currently no method for producing timepieces of complex shapes, transparent and invisible to the naked eye and having the mechanical characteristics required by the functions in the horological field. Attempts have been made to make a watch movement at least partially invisible. Swiss patent application CH 700657 A1 describes a watch called "mysterious watch" characterized in that it comprises a disk or a transparent ring to transmit the movement of the crown to the movement. International patent application WO 95/10802 discloses a transparent analog watch which is characterized in that it consists of a number of transparent components. The European patent application EP 2149540 A1 describes a transparent timepiece and its manufacturing process characterized in that it consists of a transparent element having an antireflection coating having a high reflection index made of silicon nitride. German patent DE 3820547 C2 describes a glass object having a low reflection capacity, this characteristic being obtained by a specific treatment of the surface to make it matte. Japanese Publication JP 2009085758 A describes an object driven by a magnetic force, which is to make transparent by dipping it into a liquid contained in a transparent container. The driven object is partially transparent and its refractive index is substantially equal to that of the liquid in the container. US patent US 2011/0176396 A1 which discloses a solar watch which comprises a glass provided with an antireflection coating applied to both sides of the watch glass.
Exposé de l'invention Presentation of the invention
La présente invention se propose de pallier les inconvénients de l'art antérieur connu en développant un procédé qui permet de « faire disparaître » du spectre visible, centré autour de 600nm, un ou plusieurs composants mécaniques ayant des formes simples ou complexes, qui forment les éléments constitutifs du mouvement d'une montre.  The present invention proposes to overcome the drawbacks of the known prior art by developing a method that makes it possible to "make disappear" from the visible spectrum, centered around 600 nm, one or more mechanical components having simple or complex shapes, which form the constituent elements of the movement of a watch.
Ce but est atteint par le procédé selon l'invention, tel que défini en préambule et caractérisé en ce que ledit au moins un composant dudit mouvement de montre mécanique est réalisé en un matériau transparent et en que l'on effectue au moins un traitement pour réduire la lumière réfléchie par ledit au moins un composant dudit mouvement de montre mécanique, et son passage par ledit verre de montre. This object is achieved by the method according to the invention, as defined in the preamble and characterized in that said at least one component of said mechanical watch movement is made of a transparent material and that at least one treatment is carried out for reduce the light reflected by said at least one component of said mechanical watch movement, and its passage through said watch glass.
De façon préférentielle, ledit au moins un traitement consiste à effectuer un traitement anti reflet dudit verre de montre et au moins un traitement antireflet dudit au moins un composant dudit mouvement de montre mécanique, ce traitement étant effectué de telle manière que la courbe de transmission spectrale dudit composant est sensiblement accordée à celle du verre de montre. Ledit au moins un traitement consiste avantageusement à effectuer un traitement antireflet dudit verre de montre et au moins un traitement consistant à réduire la surface réfléchissante dudit au moins un composant dudit mouvement de montre mécanique. Selon un mode de réalisation avantageux, ledit traitement antireflet dudit verre de montre est coordonné au traitement antireflet dudit au moins un composant dudit mouvement de montre mécanique pour diminuer sa réflexion. Preferably, said at least one treatment consists of performing an antireflection treatment of said watch glass and at least one antireflection treatment of said at least one component of said mechanical watch movement, this treatment being carried out in such a way that the spectral transmission curve said component is substantially matched to that of the watch glass. Said at least one treatment advantageously consists in performing an antireflection treatment of said watch glass and at least one treatment consisting of reducing the reflecting surface of said at least one component of said mechanical watch movement. According to an advantageous embodiment, said antireflection treatment of said watch glass is coordinated with the antireflection treatment of said at least one component of said mechanical watch movement to reduce its reflection.
De façon avantageuse, ledit traitement antireflet consiste à déposer au moins une couche mince d'un matériau antireflet respectivement sur le verre de montre et sur ledit au moins un composant dudit mouvement de montre mécanique et/ou de déposer plusieurs couches minces superposées sur le verre de montre et sur ledit composant. Afin d'obtenir une quasi similitude de la courbe de transmission spectrale dudit verre de montre et de la courbe de transmission spectrale dudit composant à rendre invisible, ledit traitement antireflet consiste à appliquer plusieurs couches de matériaux différents, d'indices de réfraction différents et avec des épaisseurs déterminées pour chacune des couches. De manière avantageuse, pour chacune des couches minces superposées, l'on sélectionne les matériaux à déposer en fonction de leur indice de réfraction et l'on détermine l'épaisseur de la couche à déposer. Afin d'obtenir une quasi similitude de la courbe de transmission spectrale dudit verre de montre et de la courbe de transmission spectrale dudit composant on applique plusieurs couches de matériaux différents avec des épaisseurs déterminées pour chacune des couches. Seion un mode de réalisation préféré, l'on réalise ledit au moins un composant dudit mouvement de montre mécanique au moyen d'un polymère selon un procédé de moulage par injection. Advantageously, said antireflection treatment consists in depositing at least one thin layer of an antireflection material respectively on the watch glass and on said at least one component of said mechanical watch movement and / or depositing several thin layers superimposed on the glass of watch and on said component. In order to obtain a near similarity of the spectral transmission curve of said watch glass and of the spectral transmission curve of said component to be rendered invisible, said antireflection treatment consists of applying several layers of different materials, of different refractive indices and with determined thicknesses for each of the layers. Advantageously, for each of the superimposed thin layers, the materials to be deposited are selected according to their refractive index and the thickness of the layer to be deposited is determined. In order to obtain a near similarity of the spectral transmission curve of said watch glass and the spectral transmission curve of said component, several layers of different materials are applied with determined thicknesses for each of the layers. In a preferred embodiment, said at least one component of said mechanical watch movement is made by means of a polymer according to an injection molding process.
Les matériaux appliqués en couches minces sont avantageusement choisis parmi le groupe suivant : Oxyde de Titane (T1O2), Oxyde de Silicium (S1O2) ou un mélange de ces matériaux. The materials applied in thin layers are advantageously chosen from the following group: Titanium Oxide (T1O2), Silicon Oxide (S1O2) or a mixture of these materials.
Selon une forme de réalisation avantageuse, l'on effectue une textu ration de la surface dudit composant dudit mouvement de montre mécanique à rendre invisible. According to an advantageous embodiment, a texturing of the surface of said component of said mechanical watch movement is made invisible.
Selon un premier mode de réalisation, l'on effectue ladite texturation dudit composant à rendre invisible directement au moulage par usinage mécanique ou chimique des parois du moule d'injection. According to a first embodiment, said texturing of said component is made to render invisible directly to the molding by mechanical or chemical machining of the walls of the injection mold.
Selon un deuxième mode de réalisation l'on effectue ladite texturation dudit composant par usinage mécanique ou attaque chimique dudit composant dudit mouvement de montre mécanique à rendre invisible. Selon un troisième mode de réalisation l'on effectue ladite texturation dudit composant par nano-indentation dudit composant dudit mouvement de montre mécanique à rendre invisible. Seion une variante, qui peut être complémentaire aux autres modes de réalisation, l'on peut introduire dans ledit boîtier un fluide dont l'indice de réfraction est sensiblement égal à celui dudit au moins un composant dudit mouvement de montre mécanique. According to a second embodiment, said texturing of said component is performed by mechanical machining or chemical etching of said component of said mechanical watch movement to be rendered invisible. According to a third embodiment, said texturing of said component is carried out by nano-indentation of said component of said mechanical watch movement to be rendered invisible. Seion a variant, which may be complementary to other embodiments, can be introduced into said housing a fluid whose refractive index is substantially equal to that of said at least one component of said mechanical watch movement.
Brève description des figures Brief description of the figures
La présente invention et ses avantages seront mieux compris à la lecture de la description détaillée de modes préférés de mise en œuvre du procédé et aux dessins illustrant une forme de réalisation particulière appliquant ledit procédé, dans lesquels :  The present invention and its advantages will be better understood on reading the detailed description of preferred embodiments of the method and the drawings illustrating a particular embodiment applying said method, in which:
La figure 1 est une vue en coupe d'une forme de réalisation d'une montre- bracelet à mouvement mécanique illustrant notamment au moins un composant devant être rendu invisible au regard selon le procédé de l'invention, FIG. 1 is a sectional view of an embodiment of a mechanical movement wristwatch illustrating in particular at least one component to be rendered invisible to the eye according to the method of the invention,
La figure 2 est une vue qui représente schématiquement le principe du procédé de l'invention, FIG. 2 is a view which schematically represents the principle of the method of the invention,
La figure 3 est une vue partielle qui illustre au moins une partie d'une montre dont au moins un des composants du mouvement mécanique est traité selon le procédé de l'invention, et FIG. 3 is a partial view which illustrates at least a part of a watch of which at least one of the components of the mechanical movement is treated according to the method of the invention, and
La figure 4 est une vue partielle en perspective de la montre illustrant notamment un composant qui est rendu invisible au regard par traitement selon le procédé de l'invention. FIG. 4 is a partial perspective view of the watch illustrating in particular a component which is rendered invisible by treatment by the method of the invention.
Meilleure manière de réaliser l'invention Best way to realize the invention
L'un des objectifs de la présente invention consiste à faire disparaître à la vue certains composants d'un mouvement de montre, tels que par exemple une pièce appelée pont inférieur ou pont supérieur montés à l'intérieur de la boîte, ces éléments étant positionnés entre le verre de montre et le fond de la boîte de montre. Le but est de rendre ce ou ces composants invisibles au regard. Pour rendre invisible à l'œil un composant, il convient de diminuer, voire de supprimer la quantité de lumière qu'il réfléchit lorsqu'il est éclairé par de la lumière provenant de l'extérieur, c'est-à-dire ayant traversé le verre de montre. Le spectre de lumière visible est compris entre 400 et 800 nanomètres. Il est donc essentiel de réduire la lumière réfléchie qui se situe dans ce spectre et plus particulièrement celle qui se trouve dans un spectre lumineux aux alentours de 600 nanomètres. One of the objectives of the present invention is to remove from view certain components of a watch movement, such as for example a part called lower bridge or upper bridge mounted inside the box, these elements being positioned between the watch glass and the bottom of the watch case. The goal is to make this or these components invisible to the eye. To make a component invisible to the eye, it is necessary to reduce or even eliminate the amount of light that it reflects when it is illuminated by light coming from the outside, that is to say having crossed the watch glass. The visible light spectrum is between 400 and 800 nanometers. It is therefore essential to reduce the reflected light that is in this spectrum and more particularly that which is in a light spectrum around 600 nanometers.
Une des particularités de l'invention consiste à réaliser des composants de formes complexes en polymères selon une technologie de moulage par injection, ce qui permet à la fois de structurer leur surface et/ou d'effectuer un traitement du type antireflet de cette surface en appliquant une ou plusieurs couches minces de matériaux ayant les caractéristiques souhaitées. One of the peculiarities of the invention consists in producing components of complex shapes made of polymers according to an injection molding technology, which makes it possible both to structure their surface and / or to effect an antireflection type treatment of this surface. applying one or more thin layers of materials having the desired characteristics.
Parmi ces matériaux on trouve particulièrement des oxydes tels que l'oxyde de titane (ΤΊΟ2) et l'oxyde de silicium (S1O2). On a calculé que pour atténuer ou supprimer la réflexion, il était avantageux d'effectuer d'une part un traitement du verre de montre et d'effectuer d'autre part un traitement du ou des composants à escamoter ou à masquer. En outre le traitement antireflet multicouche permet d'occulter le composant sur une large partie du spectre visible, en particulier deux ou trois couches superposées. Among these materials there are particularly oxides such as titanium oxide (ΤΊΟ2) and silicon oxide (S1O2). It has been calculated that in order to attenuate or suppress the reflection, it was advantageous to carry out, on the one hand, a treatment of the watch glass and, on the other hand, to perform a treatment of the component (s) to be retracted or masked. In addition, the multilayer antireflection treatment makes it possible to mask the component over a large part of the visible spectrum, in particular two or three superimposed layers.
On a par ailleurs constaté qu'il était avantageux d'effectuer une texturation de la surface du composant à rendre invisible. Cette texturation peut être obtenue directement dans le moule, au moyen d'une préparation adéquate de la surface intérieure du moule. Cette technologie permet de réaliser une production en série, la surface du composant reproduisant la surface de la cavité de moulage. Il s'agit d'une nano-texturation qui peut être faite mécaniquement ou chimiquement, par agression de la surface de moulage. Dans la pratique, la pièce injectée reproduit la surface du moule préalablement traitée, et des nano-trous sont obtenus sur la surface du composant. Cette technique est réservée à des formes simples. Une autre technique consiste à réaliser le composant par moulage par injection, sans texturation préalable de la surface de moulage, puis d'effectuer un traitement post-moulage de la surface du composant à sa sortie du moule. Comme dans le cas précédemment décrit, la texturation est obtenue soit mécaniquement soit chimiquement, au moyen de substances agressives, non plus pour la surface du moule, mais pour la matière moulée. It has also been found that it is advantageous to perform texturing of the surface of the component to make invisible. This texturing can be obtained directly in the mold, by means of an adequate preparation of the inner surface of the mold. This technology makes it possible to produce a series production, the surface of the component reproducing the surface of the molding cavity. This is a nano-texturing that can be done mechanically or chemically, by aggression of the molding surface. In practice, the injected part reproduces the previously treated surface of the mold, and nano-holes are obtained on the surface of the component. This technique is reserved for simple shapes. Another technique consists in producing the component by injection molding, without prior texturing of the molding surface, and then performing a post-molding treatment of the surface of the component at its exit from the mold. As in the case previously described, the texturing is obtained either mechanically or chemically, by means of aggressive substances, not for the surface of the mold, but for the molded material.
A titre d'exemple non limitatif, la figure 1 représente sous la forme d'une vue en coupe transversale, une montre 10 dont au moins un composant du mouvement mécanique 11, logé dans un boîtier 12 doit être rendu invisible au regard. Le boîtier 12 est fermé à sa face supérieure par un verre de montre 13 et à sa face inférieure par un fond 14 qui peut être métallique ou en verre ou similaire. Dans ce dernier cas, le mouvement 11 , disposé à l'intérieur du boîtier est visible des deux côtés. Dans ce cas le traitement devra être adapté à la fois sur les deux verres de montre, celui du dessus et celui du dessous et il conviendra bien entendu également d'effectuer le traitement sur les deux surfaces dudit composant à faire disparaître à la vue, de telle manière que ce composant ne soit ni visible par le dessus ni par le dessous. Le mouvement 11 est porté par des supports 15 d'une platine 16 sensiblement centrale, c'est-à-dire positionnée sensiblement, du moins dans l'exemple représenté, plus ou moins à égale distance entre le verre de montre 13 et le fond 14 du boîtier 12. La platine 16 porte un pont barrette supérieur 17, qui est de préférence le composant que l'on veut faire disparaître à la vue, et une barrette inférieure 18 définissant un espace dans lequel est logée une cage tourbillon 19. Ladite cage tourbillon 19 est essentiellement constituée d'un pont supérieur 20 et d'un pont inférieur 21 respectivement disposés de part et d'autre de la platine 16. Le pont supérieur 20 porte un pont palier supérieur 22 et le pont inférieur 21 porte un pont pallier inférieur 23 qui servent à maintenir les extrémités 24 et 25 d'un pivot central 26 sur lequel est monté un tourbillon 27. Le but recherché est, par exemple de rendre invisible le pont supérieur 17 et les éléments qui le composent et de garder apparents le tourbillon 27 et certains autres composants secondaires non représentés, disposés à l'intérieur de la cage tourbillon 19. By way of non-limiting example, Figure 1 shows in the form of a cross-sectional view, a watch 10 of which at least one component of the mechanical movement 11, housed in a housing 12 must be made invisible to the eye. The housing 12 is closed at its upper face by a watch glass 13 and at its underside by a bottom 14 which may be metal or glass or the like. In the latter case, the movement 11 disposed inside the housing is visible on both sides. In this case the treatment must be adapted to both the watch glasses, the one above and the one below, and it will of course also be necessary to perform the treatment on both surfaces of said component to be removed from view, to such that this component is neither visible from above nor from below. The movement 11 is carried by supports 15 of a substantially central plate 16, that is to say positioned substantially, at least in the example shown, more or less equidistant between the watch glass 13 and the bottom 14 of the housing 12. The plate 16 carries an upper bar bridge 17, which is preferably the component that is to be removed from view, and a lower bar 18 defining a space in which is housed a tourbillon cage 19. Said The tourbillon cage 19 consists essentially of an upper bridge 20 and a lower bridge 21 respectively disposed on either side of the plate 16. The upper bridge 20 carries an upper bearing bridge 22 and the lower bridge 21 carries a bridge lower bearing 23 which serve to maintain the ends 24 and 25 of a central pivot 26 on which is mounted a vortex 27. The aim is, for example to make invisible the upper deck 17 and the elements that compose it and to keep visible the vortex 27 and some other unrepresented secondary components disposed inside the tourbillon cage 19.
Pour rendre invisible le pont supérieur 17, on le réalise par injection en un matériau transparent, par exemple en un polymère transparent et on effectue sur sa surface supérieure 17' un traitement antireflet, avantageusement multicouches, coordonné au traitement a nti reflet, avantageusement multicouches qui est par ailleurs effectué sur le verre 25 fermant le boîtier 12 de la montre 0. De ce fait le pont supérieur 17 disparaît au regard et seul le tourbillon 23 est apparent. In order to make the upper bridge 17 invisible, it is produced by injection into a transparent material, for example a transparent polymer, and an antireflection treatment is advantageously carried out on its top surface 17, advantageously multilayer, which is coordinated with the glare treatment, which is advantageously multilayered. is also performed on the glass 25 closing the housing 12 of the watch 0. As a result, the upper bridge 17 disappears in view and only the vortex 23 is apparent.
La figure 2 illustre le principe du procédé de l'invention. La flèche A1 représente la lumière émise par une source lumineuse extérieure, incidente sur le verre 25 de la montre 10. La flèche A2 représente la lumière réfléchie par le verre de montre. Etant donné que le verre de montre est transparent, la lumière réfléchie est très faible. La flèche A3 représente la lumière transmise par le verre de montre 25. La flèche A4 représente la lumière transmise par les composants de la cage 24. Le traitement des composants de la cage est le même que le traitement du verre de montre 25, de sorte que les longueurs d'ondes transmises et réfléchies par le verre de montre sont les mêmes que celles de la lumière transmise et réfléchie par la cage. Toute la lumière transmise par le verre est donc transmise par les composants de la cage, de sorte qu'aucun reflet n'est émis par lesdits composants. La flèche A5 représente la lumière réfléchie par la pièce opaque constituant le tourbillon 23. Cette lumière est une partie de la lumière transmise par les composants de la cage et ne contient aucune longueur d'onde pouvant être réfléchie par ces composants puisque ces longueurs d'ondes ont été filtrées par le verre de montre 25 à l'entrée de la lumière dans la montre 10. La flèche A6 représente la lumière transmise par les composants de la cage 24. Cette lumière est réfléchie par la pièce opaque du tourbillon 23 puisque aucune autre longueur d'onde ne peut être réfléchie par les composants de la cage 24, ces longueurs d'ondes ayant été filtrées à l'entrée de la lumière dans la montre à travers le verre. La flèche A7 représente la lumière transmise par le verre de montre. Cette lumière est la même que celle transmise par les composants de la cage 24 puisqu'aucune longueur d'onde ne peut être réfléchie par le verre 25, ces longueurs d'ondes ayant été filtrées par le verre à l'entrée de la lumière dans la montre. Figure 2 illustrates the principle of the method of the invention. The arrow A1 represents the light emitted by an external light source, incident on the glass 25 of the watch 10. The arrow A2 represents the light reflected by the watch glass. Since the watch glass is transparent, the reflected light is very weak. The arrow A3 represents the light transmitted by the watch glass 25. The arrow A4 represents the light transmitted by the components of the cage 24. The treatment of the components of the cage is the same as the treatment of the watch glass 25, so that the wavelengths transmitted and reflected by the watch glass are the same as those of the light transmitted and reflected by the cage. All the light transmitted by the glass is transmitted by the components of the cage, so that no reflection is emitted by said components. The arrow A5 represents the light reflected by the opaque part constituting the vortex 23. This light is a part of the light transmitted by the components of the cage and contains no wavelength that can be reflected by these components since these lengths of light waves were filtered by the watch glass 25 at the entrance of the light in the watch 10. The arrow A6 represents the light transmitted by the components of the cage 24. This light is reflected by the opaque piece of the vortex 23 since no Another wavelength can not be reflected by the components of the cage 24, these wavelengths having been filtered at the entrance of the light in the watch through the glass. Arrow A7 represents the light transmitted by the watch glass. This light is the same as that transmitted by the components of the cage 24 since no wavelength can be reflected by the glass 25, these wavelengths having been filtered by the glass at the entrance of the light in the watch.
La figure 3 illustre le procédé permettant de rendre certains composants de la montre invisibles. Il consiste à effectuer un traitement antireflet à la fois du verre de montre et des composants que l'on veut rendre invisibles. Ce traitement antireflet revient à déposer une ou plusieurs couches de substances antireflets telles que l'oxyde de Titane (TiO2), l'oxyde de Silicium (S1O2) ou un mélange de ces matériaux sur la surface extérieure, la surface intérieure ou les deux surfaces du verre 25 de la montre 10. Il convient de choisir les indices et les épaisseurs de chacune des couches. A titre d'exemple, le verre de montre 25 de la figure 3 a subi un traitement ayant consisté à déposer une première couche 25a d'un matériau antireflets d'indice n1 et d'épaisseur e1 , puis une deuxième couche 25b d'un matériau antireflets d'indice n2 et d'épaisseur e2 et enfin une troisième couche 25c de matériau antireflets d'indice n3 et d'épaisseur e3. Les trois couches ont été déposées sur la surface extérieure, mais auraient pu être déposées sur la surface intérieure ou à la fois sur les deux surfaces. Le nombre de couches, la nature du matériau antireflet, l'épaisseur de la couche ainsi que le côté de l'application peuvent varier en fonction des résultats que l'on souhaite obtenir. Cette partie du traitement est complétée par un traitement identique des composants que l'on souhaite rendre invisibles. On effectue le même traitement mono ou multicouche dans le même ordre avec les mêmes matériaux. Figure 3 illustrates the method of making certain components of the watch invisible. It consists in performing an antireflection treatment of both the watch glass and the components that we want to make invisible. This antireflection treatment amounts to depositing one or more layers of antireflection substances such as titanium oxide (TiO 2), silicon oxide (SiO 2) or a mixture of these materials on the outer surface, the inner surface or both surfaces. of glass 25 of the watch 10. It is appropriate to choose the indices and the thicknesses of each of the layers. By way of example, the watch glass 25 of FIG. 3 has undergone a treatment having consisted of depositing a first layer 25a of an antireflection material of index n1 and of thickness e1, then a second layer 25b of a antireflection material of index n2 and thickness e2 and finally a third layer 25c of antireflection material of index n3 and thickness e3. The three layers were deposited on the outer surface, but could have been deposited on the inner surface or both on both surfaces. The number of layers, the nature of the antireflection material, the thickness of the layer and the side of the application may vary depending on the results that are desired. This part of the treatment is completed by an identical treatment of the components that one wishes to make invisible. The same mono or multilayer treatment is carried out in the same order with the same materials.
La figure 4 illustre une montre 10 avec une partie du mouvement 1 1 logé dans le boîtier 12 et qui apparaît sur la platine 13 sous le verre de montre 25. Par l'application du procédé de l'invention, la plupart des composants du mouvement sont rendus invisibles. Seul le tourbillon 23 qui est réalisé en un matériau opaque est visible. FIG. 4 illustrates a watch 10 with a part of the movement 1 1 housed in the case 12 and which appears on the plate 13 under the watch glass 25. By the application of the method of the invention, most of the components of the movement are rendered invisible. Only the vortex 23 which is made of an opaque material is visible.
Une solution qui permet de réaliser l'invisibilité dudit ou desdits composants dans les trois dimensions, quelque soit l'angle d'incidence du regard consiste à introduire dans le boîtier 12 un fluide, de préférence un liquide dont l'indice de réfraction est sensiblement égal, ou du moins aussi proche que possible de l'indice de réfraction dudit composant à rendre invisible au regard. Cette mesure peut s'appliquer seule ou en complémentarité avec les autres étapes de traitement telles que décrites ci-dessus. A solution that makes it possible to achieve the invisibility of said one or more components in the three dimensions, whatever the angle of incidence of the gaze, consists in introducing into the casing 12 a fluid, preferably a liquid whose refractive index is substantially equal, or at least as close as possible to the refractive index of said component to make invisible to the eye. This measure can be applied alone or in complementarity with the other processing steps as described above.
La présente invention n'est pas limitée aux formes de réalisation décrites, mais peut subir différentes modifications ou variantes évidentes pour l'homme du métier. En particulier le nombre de couches, leur disposition et la nature des matériaux peuvent être variés. Les indices de réfraction des polymères utilisés doivent être élevés de l'ordre de 1 ,8. Les composants sont réalisés de préférence avec des matériaux injectables transparents, ce qui permet d'obtenir des formes complexes. Néanmoins une fabrication avec des pièces usinées reste envisageable. The present invention is not limited to the embodiments described, but may undergo various modifications or variations obvious to those skilled in the art. In particular the number of layers, their arrangement and the nature of the materials can be varied. The refractive indices of the polymers used must be high of the order of 1, 8. The components are preferably made with transparent injectable materials, which makes it possible to obtain complex shapes. Nevertheless a manufacture with machined parts remains possible.

Claims

REVENDICATIONS
1. Procédé pour rendre invisible dans le spectre des longueurs d'ondes visibles, au moins un composant d'un mouvement (1 1 ) de montre mécanique apparent, logé à l'intérieur d'un boîtier (12), ce boîtier étant fermé au moins sur sa face frontale, par un verre de montre (25), caractérisé en ce que ledit au moins un composant dudit mouvement (1 1 ) de montre mécanique est réalisé en un matériau transparent et en que l'on effectue au moins un traitement pour réduire la lumière réfléchie par ledit au moins un composant dudit mouvement (1 1 ) de montre mécanique, et son passage par ledit verre de montre (25). 1. A method for rendering at least one component of an apparent mechanical watch movement (1 1) visible within the visible wavelength spectrum, housed inside a case (12), this case being closed at least on its front face, by a watch glass (25), characterized in that said at least one component of said movement (1 1) of mechanical watch is made of a transparent material and that one carries out at least one treatment for reducing the light reflected by said at least one component of said movement (1 1) of mechanical watch, and its passage through said watch glass (25).
2. Procédé selon la revendication 1 , caractérisé en ce que ledit au moins un traitement consiste à effectuer un traitement antireflet dudit verre de montre (25), et un traitement antireflet dudit au moins un composant dudit mouvement (1 1 ) de montre mécanique, ce traitement étant effectué de telle manière que la courbe de transmission spectrale dudit composant est sensiblement accordée à celle du verre de montre (25). 2. Method according to claim 1, characterized in that said at least one treatment consists of performing an antireflection treatment of said watch glass (25), and an antireflection treatment of said at least one component of said movement (1 1) of a mechanical watch, this treatment being performed in such a way that the spectral transmission curve of said component is substantially matched to that of the watch glass (25).
3. Procédé selon la revendication 1 , caractérisé en ce que ledit au moins un traitement consiste à effectuer un traitement antireflet dudit verre de montre (25), et un traitement consistant à réduire la surface réfléchissante dudit au moins un composant dudit mouvement (1 1 ) de montre mécanique. 3. Method according to claim 1, characterized in that said at least one treatment consists of performing an antireflection treatment of said watch glass (25), and a treatment of reducing the reflecting surface of said at least one component of said movement (1 1 ) of mechanical watch.
4. Procédé selon la revendication 2, caractérisé en ce que le traitement antireflet dudit verre de montre (25) est coordonné au traitement antireflet dudit au moins un composant dudit mouvement (1 1 ) de montre mécanique pour diminuer sa réflexion. 4. Method according to claim 2, characterized in that the anti-reflective treatment of said watch glass (25) is coordinated with the antireflection treatment of said at least one component of said movement (1 1) of mechanical watch to reduce its reflection.
5. Procédé selon la revendication 2, caractérisé en ce que ledit traitement antireflet consiste à déposer au moins un couche mince d'un matériau antireflet respectivement sur le verre de montre (25) et sur ledit au moins un composant dudit mouvement (1 1 ) de montre mécanique. 5. Method according to claim 2, characterized in that said antireflection treatment consists of depositing at least one thin layer of antireflection material respectively on the watch glass (25) and on said at least one component of said movement (1 1). mechanical watch.
6. Procédé selon la revendication 2, caractérisé en ce que ledit traitement antireflet consiste à déposer plusieurs couche minces superposées (25a, 25b, 25c) sur le verre de montre (25) et sur ledit au moins un composant dudit mouvement (11) de montre mécanique. 6. Method according to claim 2, characterized in that said antireflection treatment consists of depositing several superimposed thin layers (25a, 25b, 25c) on the watch glass (25) and on said at least one component of said movement (11) of mechanical watch.
7. Procédé selon la revendication 2, caractérisé en ce que ledit traitement antireflet consiste à déposer les différentes couches selon une séquence prédéterminée et en ce que ladite séquence est coordonnée au traitement dudit verre de montre et dudit au moins un composant dudit mouvement (11) de montre mécanique. 7. Method according to claim 2, characterized in that said antireflection treatment consists in depositing the different layers in a predetermined sequence and in that said sequence is coordinated with the treatment of said watch glass and said at least one component of said movement (11). mechanical watch.
8. Procédé selon la revendication 6, caractérisé en ce que pour chacune des couches minces superposées, l'on sélectionne les matériaux à déposer en fonction de leur indice de réfraction et l'on détermine l'épaisseur de la couche à déposer. 8. Process according to claim 6, characterized in that for each of the superimposed thin layers, the materials to be deposited are selected according to their refractive index and the thickness of the layer to be deposited is determined.
9. Procédé selon la revendication 6, caractérisé en ce que, pour obtenir une quasi similitude de la courbe de transmission spectrale dudit verre de montre et de la courbe de transmission spectrale dudit composant on applique plusieurs couches de matériaux différents, d'indices de réfraction différents et avec des épaisseurs déterminées pour chacune des couches. 9. Method according to claim 6, characterized in that, to obtain a near similarity of the spectral transmission curve of said watch glass and the spectral transmission curve of said component is applied several layers of different materials, refractive indices. different and with specific thicknesses for each layer.
10. Procédé selon la revendication 1 , caractérisé en ce que l'on réalise ledit au moins un composant dudit mouvement (11 ) de montre mécanique au moyen d'un polymère selon un procédé de moulage par injection. 10. Method according to claim 1, characterized in that said at least one component of said movement (11) of mechanical watch is made by means of a polymer according to an injection molding process.
11. Procédé selon l'une quelconque des revendications précédentes, dans lequel ledit mouvement de montre (11 ) comporte un pont supérieur (17), caractérisé en ce que ledit composant dudit mouvement (11 ) de montre mécanique est ledit pont supérieur (17). 11. A method according to any one of the preceding claims, wherein said watch movement (11) comprises an upper bridge (17), characterized in that said component of said movement (11) of mechanical watch is said upper bridge (17) .
12. Procédé selon Tune quelconque des revendications précédentes, caractérisé en ce que les matériaux appliqués en couches minces sont choisis parmi le groupe suivant : Oxyde de Titane (ΤΊΟ2), Oxyde de Silicium (S1O2) ou mélange de ces matériaux. 12. Method according to any one of the preceding claims, characterized in that the materials applied in thin layers are chosen from the following group: Titanium oxide (ΤΊΟ2), silicon oxide (S1O2) or a mixture of these materials.
13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le degré d'invisibilité dudit mouvement (1 1 ) de montre mécanique est lié au traitement antireflet appliqué audit au moins un composant dudit mouvement (1 1) de montre mécanique 13. Method according to any one of the preceding claims, characterized in that the degree of invisibility of said movement (1 1) of mechanical watch is related to antireflection treatment applied to said at least one component of said movement (1 1) of mechanical watch
14. Procédé selon la revendication 1 , caractérisé en ce que l'on effectue une texturation de la surface dudit au moins un composant dudit mouvement (1 1 ) de montre mécanique. 14. The method of claim 1, characterized in that one carries out a texturing of the surface of said at least one component of said movement (1 1) of mechanical watch.
15. Procédé selon la revendication 14, caractérisé en ce que l'on effectue ladite texturation dudit composant directement au moulage par usinage mécanique ou chimique des parois du moule d'injection. 15. The method of claim 14, characterized in that said texturing said component directly to the molding by mechanical or chemical machining of the walls of the injection mold.
16. Procédé selon la revendication 14, caractérisé en ce que l'on effectue ladite texturation dudit composant par usinage mécanique ou attaque chimique dudit au moins un composant dudit mouvement (11 ) de montre mécanique. 16. The method of claim 14, characterized in that said texturing said component by mechanical machining or etching of said at least one component of said movement (11) mechanical watch.
17. Procédé selon la revendication 14, caractérisé en ce que l'on effectue ladite texturation dudit au moins un composant dudit mouvement ( 1 ) de montre mécanique par nano-indentation. 17. The method of claim 14, characterized in that said texturing said at least one component of said movement (1) mechanical watch by nano-indentation.
18. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on introduit dans ledit boîtier (12) un fluide dont l'indice de réfraction est sensiblement égal à celui dudit au moins un composant dudit mouvement (11 ) de montre mécanique. 18. Process according to any one of the preceding claims, characterized in that a fluid whose refractive index is substantially equal to that of said at least one component of said movement (11) of said fluid is introduced into said housing (12). mechanical watch.
PCT/CH2014/000098 2014-07-09 2014-07-09 Optical method for making at least one component of a watch movement invisible WO2016004540A1 (en)

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WO2017137915A1 (en) * 2016-02-12 2017-08-17 Cartier International Ag Decorative object, in particular a watch crystal, with optical effect
CN108778774A (en) * 2016-02-12 2018-11-09 卡地亚国际有限公司 Ornament with optical effect, especially Watch glass
US10976707B2 (en) 2016-02-12 2021-04-13 Cartier International Ag Decorative object, in particular watch glass, with an optical effect
CN108778774B (en) * 2016-02-12 2021-07-09 卡地亚国际有限公司 Decoration with optical effect, especially watch glass

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