WO2022122199A1 - Procédé de fabrication d'aiguilles luminescentes - Google Patents
Procédé de fabrication d'aiguilles luminescentes Download PDFInfo
- Publication number
- WO2022122199A1 WO2022122199A1 PCT/EP2021/074292 EP2021074292W WO2022122199A1 WO 2022122199 A1 WO2022122199 A1 WO 2022122199A1 EP 2021074292 W EP2021074292 W EP 2021074292W WO 2022122199 A1 WO2022122199 A1 WO 2022122199A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- luminescent
- light
- optical material
- manufacturing
- 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.)
- Ceased
Links
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
- G04B19/00—Indicating the time by visual means
- G04B19/04—Hands; Discs with a single mark or the like
- G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy
-
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/30—Illumination of dials or hands
- G04B19/32—Illumination of dials or hands by luminescent substances
-
- 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
- G04B45/0007—Light-, colour-, line-, or spot-effects caused by parts or pictures moved by the clockwork
Definitions
- the present invention relates to the field of luminescent hands and more particularly to the manufacture of luminescent hands.
- the present invention proposes to solve all or part of the aforementioned drawbacks by means of a method of manufacturing at least one luminescent hand for a watch movement, preferably for a watch; said manufacturing method comprising at least one:
- At least one medium comprising at least one light guide; said at least one light guide comprising at least one emerging surface and being configured to guide light;
- said at least one structuring is produced by abrasion, by sandblasting, by stamping, and/or by photostructuring.
- said at least one supply of at least one support comprises a deposition of at least one layer of a first optical material; said at least one layer of first optical material comprising a first refractive index.
- said deposition of said at least one layer of a first optical material comprises a heat treatment step.
- said at least one supply of at least one support comprises at least one deposit of at least one layer of luminescent material.
- said at least one supply of at least one support comprises a deposition of at least one layer of a second optical material; said at least one layer of a second optical material comprising a second refractive index.
- said first refractive index is lower than said second refractive index.
- the present invention proposes to solve all or part of the aforementioned drawbacks by means of at least one luminescent needle comprising at least one:
- said at least one support being configured to form a needle
- said at least one light guide comprising at least one emerging surface configured to be roughened so as to extract light from said at least one light guide.
- said at least one light guide comprises at least one layer of first optical material comprising a first refractive index and at least one layer of a second optical material comprising a second refractive index; said first refractive index is lower than said second refractive index.
- FIG. 2 illustrates a heat treatment step 525 according to one embodiment
- FIG. 3 shows the deposition 530 of at least one layer of luminescent material 130 according to one embodiment
- FIG. 4 and 5 show the deposition 540 and the formation 550 of at least one layer of a second optical material 140 according to one embodiment
- FIG. 6 shows a step 560 of structuring said at least one emerging surface 190 according to one embodiment
- FIG. 7 shows the cutout 570 of at least one luminescent needle 100
- FIG. 8 illustrates said at least one luminescent needle 100 in operation according to one embodiment.
- the applicant proposes at least one luminescent needle 100, observable in FIG. 8, comprising at least one support 110 configured to form a needle and at least one light guide 150 comprising at least one emerging surface 190 configured to be roughened by so as to extract light 910 from said at least one light guide 150.
- Said at least one luminescent hand 100 intended to be used in a horological movement, preferably for a watch, can be obtained thanks to the manufacturing method 500 of the applicant.
- said manufacturing method comprises at least one supply 510 of at least one support 110, preferably a sheet 110, as illustrated in Figure 1.
- Said at least one support 110 receives, during a deposition 520, at least one layer of a first optical material 120, preferably at least one optical insulation layer making it possible to prevent light from being absorbed by said sheet 110 , comprising a first refractive index followed by a heat treatment 525 at a certain temperature 521.
- said sheet 110 or said at least one support 110 can be washed or washed and then a plasma treatment can be applied to promote the adhesion of said at least one layer of a first optical material 120.
- said at least one layer of a first optical material 120 can be a resin marketed by POLYRISETM for example, and has the function of optically isolating the surface of said at least one support 110 so that it can absorb light as little as possible.
- This optical insulation can be permitted thanks to said first refractive index which cannot be greater than 1.60, in particular 1.45 and preferably 1.35.
- Said at least one layer of a first optical material 120 can be deposited for example by printing or by spraying, since spraying makes it possible to selectively deposit said at least one layer of a first optical material 120 on the useful parts and avoid waste .
- said at least one layer of a first optical material 120 undergoes said heat treatment 525 for for example one hour at 300° C. under dinitrogen, so that the solvent of said at least one layer of a first optical material 120 can evaporate, which can be seen in Figure 2.
- at least one deposit 530 of at least one layer of luminescent material 130 can be made on said at least one support 110, preferably on said at least one layer of a first optical material 120.
- Said at least one layer of luminescent material 130 preferably comprising fluorescent pigments and an adhesive allowing fixing by polymerization, has the function of illuminating said at least one luminescent needle 100 when said at least one layer of luminescent material 130 is illuminated by a light source having a wavelength range less than 530 nm for example.
- fluorescent pigments can be a source of secondary fluorescent light.
- fluorescent pigments can be excited remotely by a source of blue or ultraviolet light, for example. It should be noted that other techniques such as screen printing or digital printing could be used for said at least one deposit 530 of said at least one layer of luminescent material 130.
- said at least one layer of a second optical material 140 can be pushed by a blade so as to fill the various cavities that may exist.
- said at least one layer of a second optical material 140 comprises a second refractive index greater than said first refractive index so as to guide the fluorescent light emitted by said at least one layer of luminescent material 130. Visible in FIG. 5, said at least one layer of a second optical material 140 can be fixed by exposure under ultraviolet light 552 and under vacuum 551. Alternatively, it may be possible to laminate a plastic film in order to expel the air before exposure under ultraviolet light.
- the underside of said at least one layer of a second optical material 140 comprises one or more deposits of fluorescent material, facing a light source 900, so as to establish optical contact with said at least one layer of luminescent material 130, and as previously mentioned, at least one layer of luminescent material 130 can be formed of fluorescent pigments incorporated in an adhesive. Alternatively the fluorescent material can be incorporated into the light guide layer.
- the light source 900 illuminates said at least one layer of luminescent material 130 having a wavelength shorter than the wavelength which will be re-emitted by said at least one layer of luminescent material 130.
- Said at least one layer of luminescent material 130 absorbs this incident light and re-emits it 910, in particular in said at least one layer of a second optical material 140.
- the presence of said at least one layer of first optical material 120 allows total internal reflection of the fluorescent light propagating in said at least one layer of a second optical material 140 and thus avoids progressive absorption in said at least one support 110.
- the difference in refractive index between said at least one support 110 and said at least one layer of a second optical material 140 is comprised within the range going from 0.5 to 0.9, preferably from 0.55 to 0 ,8, more preferably from 0.6 to 0.75, makes it possible to increase the value of the critical angle and therefore the numerical aperture of said at least one layer of a second optical material 140 in order to maximize the coupling of the light fluorescent. It will be noted that the presence of said at least one layer of a first optical material 120 allows transmission without loss in said at least one layer of a second optical material 140 once the light has been coupled and that the index of said at least a layer of a first optical material 120 influences the amount of coupled light.
- Said at least one layer of a first optical material 120 can have a thickness ranging from 2 ⁇ m to 15 ⁇ m, preferably from 3 ⁇ m to 12 ⁇ m, even more preferably from 5 ⁇ m to 10 ⁇ m.
- a multitude of total internal reflections in said at least one layer of a second optical material 140 follow until arriving at one end of said at least one luminescent needle 100 where the luminous flux is transmitted towards the outside.
- a structuring step 560 of said at least one emerging surface 190 can be performed by abrasion 565, by ablation 565, by sandblasting 565, by stamping 565 and/or photostructuring 565 in order to increase said at least one emerging surface 190 and/or totally or partially preventing the light 910 from being refracted again, which would lead to a concentration of a large part of the light at one point, for example.
- a surface structuring can be provided, that is to say that the material of said at least one layer of a second optical material 140 can be torn off locally so as to induce a roughness, on said at least an emerging surface 190 of said at least one layer of a second optical material 140 so that extraction of light 910 is facilitated therefrom.
- a light diffusion zone which can be produced by deposition of resin, can be added to said at least one luminescent needle 100, extending beyond, that is to say protruding, from said at least a support 110 to facilitate the leakage of the luminous flux and to obtain a decorative pattern on said tip.
- a light diffusion zone which can be produced by deposition of resin, can be added to said at least one luminescent needle 100, extending beyond, that is to say protruding, from said at least a support 110 to facilitate the leakage of the luminous flux and to obtain a decorative pattern on said tip.
- the tip of said at least one luminescent needle 100 not only the tip of said at least one luminescent needle 100 but also the edges of said at least one luminescent needle 100 and possibly the head comprise said at least one emerging surface 190.
- a cutting step 570 of said at least one luminescent needle 100 is carried out for example by laser 571, preferably, because the laser 571 can melt said at least one light guide 150, composed of said at least one layer of first material optical 120 and at least one layer of a second optical material 140, and produce a polished surface state, figure 7, which makes it possible to reflect a light 910 towards the interior of said at least one light guide 150.
- said at least one emerging surface 190 corresponds to a peripheral surface of said at least one luminescent needle 100 in order to illuminate the profile of said at least one luminescent needle 100.
- said at least one at least one layer of luminescent material 130 when said at least one at least one layer of luminescent material 130 is subjected to said source of light 900 having a wavelength between 330 nm and 560 nm, said at least one layer of luminescent material 130 generates said light 910 which is extracted via said at least one emerging surface 190 of said at least one light guide 150.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Details Of Measuring Devices (AREA)
- Led Device Packages (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023534921A JP7620105B2 (ja) | 2020-12-11 | 2021-09-02 | 発光針を製造するための方法 |
| CN202180083148.4A CN116601568B (zh) | 2020-12-11 | 2021-09-02 | 用于制造发光指针的方法 |
| EP21773052.2A EP4260145B1 (fr) | 2020-12-11 | 2021-09-02 | Aiguilles luminescentes |
| US18/037,612 US12468260B2 (en) | 2020-12-11 | 2021-09-02 | Method for manufacturing luminescent hands |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20213515.8 | 2020-12-11 | ||
| EP20213515 | 2020-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022122199A1 true WO2022122199A1 (fr) | 2022-06-16 |
Family
ID=73834343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2021/074292 Ceased WO2022122199A1 (fr) | 2020-12-11 | 2021-09-02 | Procédé de fabrication d'aiguilles luminescentes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12468260B2 (fr) |
| EP (1) | EP4260145B1 (fr) |
| JP (1) | JP7620105B2 (fr) |
| CN (1) | CN116601568B (fr) |
| WO (1) | WO2022122199A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4478131A1 (fr) | 2023-06-12 | 2024-12-18 | The Swatch Group Research and Development Ltd | Procédé de fabrication d'aiguilles lumineuses par réplication de micro-structures |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2421809A (en) * | 2004-12-29 | 2006-07-05 | Stanley Kuo | Electric Power Supply Mechanism on Spinning Indicators such as hands for timepieces. |
| EP2950166A1 (fr) * | 2014-05-27 | 2015-12-02 | The Swatch Group Research and Development Ltd. | Jeu d'aiguilles d'affichage lumineuses pour objet portable tel qu'une montre ou un instrument de mesure |
| EP3502792A1 (fr) * | 2017-12-19 | 2019-06-26 | The Swatch Group Research and Development Ltd | Aiguille electroluminescente, et ensemble a jeu d'aiguilles electroluminescentes |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB421809A (en) | 1933-04-01 | 1935-01-01 | Richard Oldham | Improvements in fuel injection pumps |
| FR2673527B1 (fr) | 1991-03-07 | 1997-04-11 | Proteor Sa | Corset formant siege pour handicape physique, notamment pour enfant. |
| JPH1026670A (ja) * | 1996-07-12 | 1998-01-27 | Casio Comput Co Ltd | 発光装置及び発光装置を備えた時計 |
| FR2757939B3 (fr) | 1996-12-30 | 1999-01-08 | Gemplus Sca | Gabarit pour le controle geometrique de cartes a memoire |
| JPH1195698A (ja) * | 1997-09-19 | 1999-04-09 | Casio Comput Co Ltd | 発光装置、時計、電子機器、発光装置の製造方法 |
| EP1444554B1 (fr) * | 2001-11-12 | 2009-12-16 | Eterna AG Uhrenfabrik | Dispositif d'affichage pour montre-bracelet |
| JP4481564B2 (ja) * | 2001-12-13 | 2010-06-16 | アスラブ・エス アー | 特に時計の発光針およびそれを備えた表示装置 |
| JP4912014B2 (ja) * | 2006-04-03 | 2012-04-04 | ジェコー株式会社 | 表示装置 |
| CH706262A2 (de) * | 2012-03-21 | 2013-09-30 | Dr Daniel Rytz | Zeiger für Uhren oder Messgeräte mit Wellenleitern und Auskopplerstrukturen. |
| CH708752A2 (fr) * | 2013-10-30 | 2015-04-30 | Swatch Group Res & Dev Ltd | Dispositif de détection de la position des aiguilles d'une montre. |
| JP2018197724A (ja) * | 2017-05-24 | 2018-12-13 | 株式会社デンソー | 車両用表示装置 |
-
2021
- 2021-09-02 CN CN202180083148.4A patent/CN116601568B/zh active Active
- 2021-09-02 JP JP2023534921A patent/JP7620105B2/ja active Active
- 2021-09-02 EP EP21773052.2A patent/EP4260145B1/fr active Active
- 2021-09-02 US US18/037,612 patent/US12468260B2/en active Active
- 2021-09-02 WO PCT/EP2021/074292 patent/WO2022122199A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2421809A (en) * | 2004-12-29 | 2006-07-05 | Stanley Kuo | Electric Power Supply Mechanism on Spinning Indicators such as hands for timepieces. |
| EP2950166A1 (fr) * | 2014-05-27 | 2015-12-02 | The Swatch Group Research and Development Ltd. | Jeu d'aiguilles d'affichage lumineuses pour objet portable tel qu'une montre ou un instrument de mesure |
| EP3502792A1 (fr) * | 2017-12-19 | 2019-06-26 | The Swatch Group Research and Development Ltd | Aiguille electroluminescente, et ensemble a jeu d'aiguilles electroluminescentes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4478131A1 (fr) | 2023-06-12 | 2024-12-18 | The Swatch Group Research and Development Ltd | Procédé de fabrication d'aiguilles lumineuses par réplication de micro-structures |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230418226A1 (en) | 2023-12-28 |
| CN116601568A (zh) | 2023-08-15 |
| JP2023553427A (ja) | 2023-12-21 |
| CN116601568B (zh) | 2026-01-09 |
| US12468260B2 (en) | 2025-11-11 |
| EP4260145A1 (fr) | 2023-10-18 |
| JP7620105B2 (ja) | 2025-01-22 |
| EP4260145B1 (fr) | 2024-10-30 |
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