EP0947895B1 - Glace de montre comprenant une lentille et procédé de fabrication d'une telle lentille - Google Patents
Glace de montre comprenant une lentille et procédé de fabrication d'une telle lentille Download PDFInfo
- Publication number
- EP0947895B1 EP0947895B1 EP98106048A EP98106048A EP0947895B1 EP 0947895 B1 EP0947895 B1 EP 0947895B1 EP 98106048 A EP98106048 A EP 98106048A EP 98106048 A EP98106048 A EP 98106048A EP 0947895 B1 EP0947895 B1 EP 0947895B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- crystal
- recess
- glass
- watch
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
-
- 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
- G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
- G04B39/008—Watch crystals; Fastening or sealing of crystals; Clock glasses with means for magnified reading
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/21—Circular sheet or circular blank
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/21—Circular sheet or circular blank
- Y10T428/216—Ornamental, decorative, pattern, or indicia
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/21—Circular sheet or circular blank
- Y10T428/219—Edge structure
Definitions
- the present invention relates to a watch crystal comprising an optical lens shaped in the thickness ice material, as well as a method of manufacture of such a lens.
- the lens is protruding on the upper face or the lower face of the glass, its shape can be arbitrary.
- the lens can then be made of a block with the ice if it is produced by molding, for example of a material synthetic such as PMMA.
- the ice is made of a hard material such as sapphire, which is difficult to machine and polish, such a protruding lens is usually made separately, then glued to the ice cream. This presents mounting difficulties and risks of delamination during use.
- the lenses protruding are exposed to wear and shock if they are on the outside of the glass, or have a annoying bulk vis-à-vis the watch hands if they are on the inside.
- Patent EP 0 123 891 describes a process for forming such a lens in a plate mineral matter, especially sapphire, by machining with by means of a rotary grinding wheel with an oscillating movement of the grinding wheel or plate. In practice, this process does not only suitable for the production of circular lenses.
- Another construction consists in separately manufacturing the lens and the plate intended to form the ice, to spare in the thickness of the plate a blind housing having a depth substantially equal to the thickness of the lens, then fix the lens in this housing.
- the plate and the lens can be in particular glass, spinel, corundum or sapphire. This has the advantage to allow a non-circular shape of the lens, by example an elongated shape to facilitate the reading of a indication in a rectangular window.
- the manufacturing process remains rather complicated, in particular because you have to machine and polish the recess in addition to two sides of the lens, and the risk of the lens remains.
- the present invention aims to avoid the drawbacks mentioned above, in particular with glasses and lenses in hard material, by making a simple watch crystal, resistant and attractive.
- a basic idea of the invention consists in making a corundum, sapphire or spinel watch glass, comprising an optical lens shaped in the thickness of ice material, this lens having a non-circular periphery.
- the periphery may have re-entrant angles and may be for example rectangular.
- another aspect of the invention relates to a method for manufacturing an optical lens non-circular in the thickness of a watch glass in hard mineral matter, especially of corundum, sapphire or spinel, characterized in that it comprises the stages successive consisting of forming by machining in one face ice, a recess with a non-circular periphery, the recess having side walls and a curved bottom intended to constitute a surface of the lens, and to polish at least the bottom of the recess using a brush back and forth to strike the bottom, with the addition of a polishing agent.
- Machining can be carried out for example by ultrasound by means of a sonotrode, or by etching by means of a rotary tool.
- the brush can be animated, in addition to its back and forth movement, of a transverse movement, for example thanks to a rotation about a substantially perpendicular axis ice and located away from the lens.
- Watch glass 1 shown in Figures 1 and 3 is made of a hard transparent crystalline material of the corundum family, for example sapphire or spinel. It can have any shape in plan, which is a barrel shape in this case as well that in elevation, for example a flat, domed or facets.
- Figure 3 shows a case where the face upper 2 and the lower face 3 of the glass are planar.
- a rectangular converging lens 4 is made in the thickness of the material of the ice 1, its shape being determined by a recess 5 formed in the underside 3 of the ice. This recess presents side walls 6 around its periphery and a curved bottom 7 constituting the lower surface of the lens 4.
- the upper surface 8 of the lens is formed directly by the upper face 2 of the glass.
- lens 4 has a shape particularly elongated rectangular, allowing read for example a date indicated in the form of the day of the week and the calendar.
- the surface domed lower 7 of the lens will preferably have a cylindrical shape.
- Figure 2 shows an example of a mirror 11 in the thickness of which a lens is formed spherical 12 having a non-circular plane shape any, allowing to obtain aesthetic effects individuals.
- the periphery of the lens 12 may have in particular straight sides 13, curved sides 14 and inside corners 15. The watch designer has thus greater freedom of choice.
- Glass 1 and its lens 4 can be produced as follows. Before making the lens, we can make ice 1 by conventional methods machining and polishing the material from which it is made. However, note that the polishing of its underside can be done at least partially after machining the lens, that is to say at the same time as the polishing of the curved face 7 of the lens.
- Machining for lens shaping 4 consists in digging the recess 5 in the face 3 of the ice by any suitable technique.
- a technique preferred is that of ultrasonic machining using of a sonotrode 20 as shown in FIG. 4, the ultrasonic vibration being represented by the double arrow 21.
- the glass 1 is placed upside down on an anvil 22.
- the end 23 of the sonotrode has a shape three-dimensional which corresponds to the desired final shape of the recess 5.
- the sonotrode 20 is filled with diamond and a liquid is also injected loaded with diamond powder through 24 conduits to the end of the sonotrode. This machining produces a recess 5 whose surfaces are matt and whose side walls 6 are substantially perpendicular to the side 3 of the ice.
- Another machining method that can be used to form the recess 5 is that of the engraving by means of a tool rotary such as a diamond cutter by copying from of a model. If the plan shape of the recess is present re-entrant angles, these will then be slightly rounded.
- the side walls 6 can be inclined one way or the other compared to normal to the side 3.
- a polishing agent such as a paste or a liquid (especially oil or beeswax) loaded with diamond powder is applied to the ice, by example by injection through brush 33.
- a polishing agent such as a paste or a liquid (especially oil or beeswax) loaded with diamond powder is applied to the ice, by example by injection through brush 33.
- the brush 33 also has a transverse displacement opposite each window, so that the bristles of the brush move relative to the surfaces to be polished.
- this displacement is obtained simply by a rotation 38 around the axis 36 of the brush, this axis being located at a distance from the glass and lenses.
- the process described above is characterized by a great simplicity, since the lens can be polished the same time as ice, and it provides lenses of any shape, shaped in the material ice itself.
- This process is particularly advantageous compared to the manufacture of a lens added according to document EP 0 814 388, which required to machine and polish the two sides of the glass, the recess intended to receive the lens, as well than the two sides of the lens made separately. he also avoids the problems associated with adjusting the lens in its housing, sticking and the risk of peeling off.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
- la figure 1 représente la face inférieure d'une glace de montre comprenant une lentille rectangulaire;
- la figure 2 représente la face inférieure d'une autre glace de montre comprenant une lentille ayant une autre forme non circulaire;
- la figure 3 est une vue en coupe agrandie de la glace dans la région de la lentille, suivant la ligne III-III de la figure 1;
- la figure 4 est une vue en coupe schématique illustrant l'usinage de la lentille de la figure 3 par ultrasons, et
- la figure 5 est une vue en coupe schématique illustrant le polissage de la glace et de la lentille de la figure 3.
Claims (10)
- Glace de montre en corindon, saphir ou spinelle, comprenant une lentille optique (4, 12) à pourtour non circulaire, caractérisée en ce que la lentille (4, 12) est façonnée dans l'épaisseur de la matière de la glace (1, 11).
- Glace de montre selon la revendication 1, caractérisée en ce que ledit pourtour présente des angles rentrants (15).
- Glace de montre selon la revendication 1, caractérisée en ce que ledit pourtour est rectangulaire.
- Glace de montre selon l'une des revendications 1 à 3, caractérisée en ce que l'une (8) des surfaces de la lentille est formée par une face (2) de la glace et en ce que l'autre surface (7) de la lentille, ménagée dans l'autre face (3) de la glace, a une forme sphérique ou cylindrique.
- Procédé de fabrication d'une lentille optique non circulaire (4) dans l'épaisseur d'une glace de montre (1) en matière minérale dure, notamment en corindon, saphir ou spinelle, caractérisé en ce qu'il comporte les étapes successives consistant à :former par usinage dans une face de la glace un évidement (5) à pourtour non circulaire, l'évidement ayant des parois latérales (6) et un fond bombé (7) destiné à constituer une surface de la lentille, etpolir au moins le fond de l'évidement au moyen d'une brosse (33) animée d'un mouvement de va-et-vient (35) pour frapper le fond, avec adjonction d'un agent de polissage.
- Procédé selon la revendication 5, caractérisé en ce que ledit pourtour présente des angles rentrants.
- Procédé selon la revendication 5 ou 6, caractérisé en ce que la brosse (33) est en outre animée d'un mouvement transversal.
- Procédé selon la revendication 7, caractérisé en ce que le mouvement transversal de la brosse comporte une rotation (38) autour d'un axe (36) sensiblement perpendiculaire à la glace et situé à distance de la lentille.
- Procédé selon la revendication 5, caractérisé en ce que l'usinage est effectué par ultrasons au moyen d'une sonotrode (20) ayant une extrémité (23) dont la forme correspond sensiblement à la forme de l'évidement (5).
- Procédé selon la revendication 5, caractérisé en ce que l'usinage est effectué par gravure au moyen d'un outil rotatif.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69827768T DE69827768D1 (de) | 1998-04-02 | 1998-04-02 | Uhrglas mit einer Linse und Verfahren zur Herstellung einer solchen Linse |
EP98106048A EP0947895B1 (fr) | 1998-04-02 | 1998-04-02 | Glace de montre comprenant une lentille et procédé de fabrication d'une telle lentille |
US09/275,403 US6406769B1 (en) | 1998-04-02 | 1999-03-24 | Watch crystal including a lens and manufacturing method for such a lens |
CN99104715A CN1230706A (zh) | 1998-04-02 | 1999-04-01 | 包含透镜的手表面玻璃及该透镜的制造方法 |
JP11096278A JP2000065960A (ja) | 1998-04-02 | 1999-04-02 | レンズを含む腕時計ガラス及びそのようなレンズの製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98106048A EP0947895B1 (fr) | 1998-04-02 | 1998-04-02 | Glace de montre comprenant une lentille et procédé de fabrication d'une telle lentille |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0947895A1 EP0947895A1 (fr) | 1999-10-06 |
EP0947895B1 true EP0947895B1 (fr) | 2004-11-24 |
Family
ID=8231707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106048A Expired - Lifetime EP0947895B1 (fr) | 1998-04-02 | 1998-04-02 | Glace de montre comprenant une lentille et procédé de fabrication d'une telle lentille |
Country Status (5)
Country | Link |
---|---|
US (1) | US6406769B1 (fr) |
EP (1) | EP0947895B1 (fr) |
JP (1) | JP2000065960A (fr) |
CN (1) | CN1230706A (fr) |
DE (1) | DE69827768D1 (fr) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
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US6839362B2 (en) * | 2001-05-22 | 2005-01-04 | Saint-Gobain Ceramics & Plastics, Inc. | Cobalt-doped saturable absorber Q-switches and laser systems |
US6877894B2 (en) | 2002-09-24 | 2005-04-12 | Siemens Westinghouse Power Corporation | Self-aligning apparatus for acoustic thermography |
US7045223B2 (en) * | 2003-09-23 | 2006-05-16 | Saint-Gobain Ceramics & Plastics, Inc. | Spinel articles and methods for forming same |
US7326477B2 (en) * | 2003-09-23 | 2008-02-05 | Saint-Gobain Ceramics & Plastics, Inc. | Spinel boules, wafers, and methods for fabricating same |
US20050061230A1 (en) * | 2003-09-23 | 2005-03-24 | Saint-Gobain Ceramics & Plastics, Inc. | Spinel articles and methods for forming same |
US7083326B2 (en) * | 2004-09-13 | 2006-08-01 | Ast Ryan C | Adjustable watch crystal apparatus |
EP1647867A1 (fr) | 2004-10-11 | 2006-04-19 | The Swatch Group Management Services AG | Dispositif de grossissement pour pièce d'horlogerie |
JP2008523426A (ja) * | 2004-12-09 | 2008-07-03 | カール・ツアイス・エスエムテイ・アーゲー | マイクロリソグラフィ投影露光装置用の透過光学素子および対物レンズ |
US7919815B1 (en) | 2005-02-24 | 2011-04-05 | Saint-Gobain Ceramics & Plastics, Inc. | Spinel wafers and methods of preparation |
WO2008074503A1 (fr) * | 2006-12-21 | 2008-06-26 | Carl Zeiss Smt Ag | Élément optique d'émission |
EP2500134A1 (fr) * | 2011-03-16 | 2012-09-19 | Comadur S.A. | Pièce d'habillage pour une pièce d'horlogerie et son système de fabrication |
EP2543653B2 (fr) * | 2011-07-04 | 2023-01-11 | Comadur S.A. | Procédé de fabrication d'une céramique mate non marquante |
CN109865764B (zh) | 2012-02-16 | 2021-05-14 | 苹果公司 | 由刚性材料形成的联锁柔性片段 |
US10052848B2 (en) | 2012-03-06 | 2018-08-21 | Apple Inc. | Sapphire laminates |
US9223162B2 (en) * | 2012-04-11 | 2015-12-29 | Apple Inc. | Display having a flexured element |
US9221289B2 (en) | 2012-07-27 | 2015-12-29 | Apple Inc. | Sapphire window |
US10086484B2 (en) | 2012-10-12 | 2018-10-02 | Apple Inc. | Manufacturing of computing devices |
US9232672B2 (en) | 2013-01-10 | 2016-01-05 | Apple Inc. | Ceramic insert control mechanism |
US9678540B2 (en) | 2013-09-23 | 2017-06-13 | Apple Inc. | Electronic component embedded in ceramic material |
US9632537B2 (en) | 2013-09-23 | 2017-04-25 | Apple Inc. | Electronic component embedded in ceramic material |
JP2015072146A (ja) * | 2013-10-02 | 2015-04-16 | 株式会社秋田研磨工業 | 腕時計用カバーガラス |
US9154678B2 (en) | 2013-12-11 | 2015-10-06 | Apple Inc. | Cover glass arrangement for an electronic device |
US9225056B2 (en) | 2014-02-12 | 2015-12-29 | Apple Inc. | Antenna on sapphire structure |
US9852723B2 (en) | 2014-03-27 | 2017-12-26 | Apple Inc. | Acoustic modules |
KR200488235Y1 (ko) * | 2014-08-27 | 2018-12-31 | 애플 인크. | 전자 디바이스들에 대한 사파이어 커버 |
US10335979B2 (en) | 2014-09-30 | 2019-07-02 | Apple Inc. | Machining features in a ceramic component for use in an electronic device |
US10071539B2 (en) | 2014-09-30 | 2018-09-11 | Apple Inc. | Co-sintered ceramic for electronic devices |
US10207387B2 (en) | 2015-03-06 | 2019-02-19 | Apple Inc. | Co-finishing surfaces |
US10406634B2 (en) | 2015-07-01 | 2019-09-10 | Apple Inc. | Enhancing strength in laser cutting of ceramic components |
US10216233B2 (en) | 2015-09-02 | 2019-02-26 | Apple Inc. | Forming features in a ceramic component for an electronic device |
US11419231B1 (en) | 2016-09-22 | 2022-08-16 | Apple Inc. | Forming glass covers for electronic devices |
US10800141B2 (en) | 2016-09-23 | 2020-10-13 | Apple Inc. | Electronic device having a glass component with crack hindering internal stress regions |
US11565506B2 (en) | 2016-09-23 | 2023-01-31 | Apple Inc. | Thermoformed cover glass for an electronic device |
US11535551B2 (en) | 2016-09-23 | 2022-12-27 | Apple Inc. | Thermoformed cover glass for an electronic device |
US10542628B2 (en) | 2017-08-02 | 2020-01-21 | Apple Inc. | Enclosure for an electronic device having a shell and internal chassis |
EP3575888B1 (fr) * | 2018-05-30 | 2023-04-12 | Rolex Sa | Piece d'horlogerie comportant une lentille asphérique |
US11420900B2 (en) | 2018-09-26 | 2022-08-23 | Apple Inc. | Localized control of bulk material properties |
CN109454542A (zh) * | 2018-11-23 | 2019-03-12 | 湖南航天环宇通信科技股份有限公司 | 一种红外多晶薄壁零件的表面加工方法及其加工设备 |
US11680010B2 (en) | 2019-07-09 | 2023-06-20 | Apple Inc. | Evaluation of transparent components for electronic devices |
CN113453458B (zh) * | 2020-03-28 | 2023-01-31 | 苹果公司 | 用于电子设备壳体的玻璃覆盖构件 |
US11460892B2 (en) * | 2020-03-28 | 2022-10-04 | Apple Inc. | Glass cover member for an electronic device enclosure |
US11666273B2 (en) | 2020-05-20 | 2023-06-06 | Apple Inc. | Electronic device enclosure including a glass ceramic region |
WO2022133136A1 (fr) | 2020-12-17 | 2022-06-23 | Apple Inc. | Fluide formant un composant en verre pour un dispositif électronique portable |
WO2022140541A1 (fr) | 2020-12-23 | 2022-06-30 | Apple Inc. | Découpe laser de composants transparents pour un dispositif électronique |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH81360A4 (fr) * | 1960-01-25 | 1962-12-29 | ||
CH513453A (fr) * | 1968-05-01 | 1971-04-15 | Ulrich Klingenberg Hans | Montre-bracelet |
CH495003A (fr) * | 1968-08-09 | 1970-01-30 | Triebold Agon Uhren | Pièce d'horlogerie |
US4043116A (en) * | 1976-01-29 | 1977-08-23 | Metallprodukte A.G. Grenchen | Timepiece comprising a flat display device exposed through an opening in a case |
CH651773A5 (fr) | 1983-03-31 | 1985-10-15 | Comadur Sa | Procede pour former une lentille convergente dans une plaque d'un materiau mineral transparent. |
JPS61214959A (ja) * | 1985-03-18 | 1986-09-24 | Canon Inc | 振動研摩加工装置 |
US5230182A (en) * | 1992-07-31 | 1993-07-27 | Hughes Aircraft Company | Apparatus for optical materials fabrication by ultrasonic machining |
CH690521A5 (fr) * | 1996-06-19 | 2000-09-29 | Stettler Hans Ag | Glace de montre. |
DE19624611A1 (de) | 1996-06-20 | 1998-01-02 | Freudenberg Carl Fa | Vorrichtung zur Abdichtung eines Ringspalts zwischen einem Gehäuse und einer Welle |
JP3634592B2 (ja) * | 1997-01-08 | 2005-03-30 | セイコーエプソン株式会社 | 接着固定物、電子機器および時計 |
-
1998
- 1998-04-02 DE DE69827768T patent/DE69827768D1/de not_active Expired - Lifetime
- 1998-04-02 EP EP98106048A patent/EP0947895B1/fr not_active Expired - Lifetime
-
1999
- 1999-03-24 US US09/275,403 patent/US6406769B1/en not_active Expired - Fee Related
- 1999-04-01 CN CN99104715A patent/CN1230706A/zh active Pending
- 1999-04-02 JP JP11096278A patent/JP2000065960A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2000065960A (ja) | 2000-03-03 |
EP0947895A1 (fr) | 1999-10-06 |
US6406769B1 (en) | 2002-06-18 |
CN1230706A (zh) | 1999-10-06 |
DE69827768D1 (de) | 2004-12-30 |
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