WO2005024087A1 - Procede de realisation d'un traitement anti-reflets sur un substrat optique, substrat optique obtenu par ce procede et dispositif de mise en oeuvre du procede - Google Patents
Procede de realisation d'un traitement anti-reflets sur un substrat optique, substrat optique obtenu par ce procede et dispositif de mise en oeuvre du procede Download PDFInfo
- Publication number
- WO2005024087A1 WO2005024087A1 PCT/FR2004/002222 FR2004002222W WO2005024087A1 WO 2005024087 A1 WO2005024087 A1 WO 2005024087A1 FR 2004002222 W FR2004002222 W FR 2004002222W WO 2005024087 A1 WO2005024087 A1 WO 2005024087A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluoropolymer
- layer
- silica
- magnesium fluoride
- optical substrate
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/111—Anti-reflection coatings using layers comprising organic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/15—Deposition methods from the vapour phase
Definitions
- the subject of the present invention is a method of producing an anti-reflection treatment on an optical substrate, in particular an ophthalmic lens, by physical gas deposition (PVD) under vacuum of at least one anti-reflection layer comprising a fluoropolymer.
- PVD physical gas deposition
- anti-reflection treatments consist of a monolayer of material with low refractive index, and, more frequently, in an alternation of thin dielectric layers with high and low refractive indices.
- obtaining a very low refractive index proves to be particularly advantageous for large-scale production as practiced in the case of ophthalmic glasses or lenses, since it is preferable to limit the number of layers of the stack, in order to minimize the process cycle time and thus meet industrial requirements in terms of cost and service.
- increasing the index difference between the high and low index layers either by increasing the high index or by decreasing the low index, makes it possible to improve the effectiveness of anti-reflection treatments while maintaining a number of restricted layers.
- the major challenge for the development of anti-reflective stacks on an ophthalmic lens is the durability of the lenses ophthalmic drugs treated in the face of the aggressions of daily life.
- a lens will be cleaned on average a thousand times, with more or less suitable cloths, dry or using water and detergents.
- excellent adhesion must be obtained between the stack and the substrate and, therefore, between the various layers, combined with good resistance to scratching and corrosion.
- Fluorinated polymers in particular polymers and copolymers of tetrafluoroethylene, are well known for their low refractive index (generally between 1.35 and 1.4 and, for example, equal to 1.35 at 630 nm for polytetrafluoroethylene) as well as their ease of cleaning, which makes them particularly attractive as a material for the outer layer of an anti-reflection stack.
- Optical multilayer films based on an amorphous fluoropolymer J. Vac. Sci. Technol. AU (1), 63 (1996) 2 R.
- PECVD plasma-assisted chemical vapor deposition
- the subject of the present invention is a method for producing an anti-reflection treatment on an optical substrate, comprising the step of physical deposition in gas phase (PVD) under vacuum of a layer with a low index of refraction comprising a fluoropolymer, characterized in that this step consists in depositing a hybrid layer of silica (SiO 2 ) or magnesium fluoride (MgF 2 ) / fluoropolymer by simultaneous evaporation under vacuum of silica or magnesium fluoride and a fluoropolymer.
- PVD gas phase
- MgF 2 magnesium fluoride
- the silica or magnesium fluoride and the fluoropolymer are coevaporated so that these are present in constant proportions over the entire thickness of the bottom layer index, which makes it possible to obtain a hybrid layer of homogeneous structure and a constant index over the entire thickness of the layer.
- the silica or magnesium fluoride and the fluoropolymer are coevaporated by varying the proportions in a controlled manner, which makes it possible to obtain a hybrid layer with an index gradient over all or part of the layer thickness.
- the quantity of fluoropolymer in the low index layer is maintained at a value less than or equal to about 30% by volume, the remainder consisting of silica or magnesium fluoride, as this allows the best compromise to be obtained. adhesion / refractive index / abrasion resistance.
- the method advantageously comprises the successive steps of continuous measurement of the refractive index of the low index layer during formation or of the speeds respective deposition of silica or magnesium fluoride and the fluoropolymer; determining the respective amounts of silica or magnesium fluoride and fluoropolymer deposited from the results of said measurement; and regulating the deposition parameters of the silica or magnesium fluoride and / or the fluoropolymer.
- deposition rates can be measured using quartz microbalances and the volume concentration of one of the compounds in the hybrid layer can be obtained from the refractive index assuming a linearized Bruggeman law for mixtures of the two compounds.
- the silica or magnesium fluoride and the fluoropolymer are evaporated by the Joule effect or by means of an electron gun.
- silica or magnesium fluoride is preferably evaporated by means of an electron gun and the fluoropolymer is evaporated by the Joule effect.
- the fluoropolymer is a polymer or a copolymer of tetrafluoroethylene, in particular an amorphous copolymer of 2,2-bistrifluoromethyl-4,5-difluoro-1, 3-dioxole and tetrafluoroethylene.
- the method according to the invention also proves to be particularly advantageous since it allows the deposition of layers with a low refractive index on organic matter substrates. It turns out, of course, also particularly advantageous in the case where the low index layer is deposited as an outer layer of an anti-reflection stack deposited on an optical substrate. According to a preferred embodiment, it consists in manufacturing an anti-reflection stack by the successive stages of physical gas phase deposition (PVD) under vacuum of three layers of the ZrO 2 / SiO 2 / ZrO 2 type , then of deposition of the outer low index layer.
- PVD physical gas phase deposition
- each physical deposition step in the gaseous vacuum phase is preferably carried out at a pressure less than or equal to approximately 10 ⁇ 2 Pa.
- the invention also relates to the use of the method as defined above to improve the adhesion of a low refractive index layer on the underlying layer of an anti-reflection stack deposited on an optical substrate or on the optical substrate itself. It also relates to an optical substrate, in particular an ophthalmic lens, capable of being obtained by the process according to the invention and comprising a hybrid layer of silica or magnesium fluoride / fluoropolymer, comprising the fluoropolymer in an amount less than or equal to approximately 30% by volume, the remainder consisting of silica or of magnesium fluoride.
- the invention finally relates to a device for implementing the method according to the invention, which is characterized in that it comprises: - a cha deposit number; at least two sources of evaporation housed in the chamber, each designed to generate the evaporation of a material to be deposited by physical deposition in the gaseous phase (PVD) under vacuum and arranged so as to be able to deposit a hybrid layer; - a substrate holder housed in the chamber; and - a pumping system to create a vacuum in the room.
- PVD gaseous phase
- - means are provided for continuously determining the quantity of each material deposited, connected by a control loop to the sources of evaporation; and / or - the determination means comprise two quartz microbalances each associated with one of the sources of evaporation; and / or - the sources of evaporation comprise at least one source of evaporation with Joule effect and an electron gun; and / or - a cold trap is provided capable of increasing the pumping speed of the water.
- - Figure 1 is a schematic representation of the configuration of a device for implementation of the method according to the invention
- - Figure 2 shows an anti-reflection stack obtained according to a preferred embodiment of the invention.
- the device 10 for implementing the method for producing anti-reflection treatment according to the invention is in the form of an evaporation machine of the Leybold type.
- Heraeus 700 QE consisting of a frame 11 defining a deposition chamber 12.
- a pumping system (not shown in FIG. 1 for the sake of simplification) is also provided to create a vacuum inside this deposition chamber 12.
- a cold trap (Meissner trap), which has also not been shown in FIG. 1 for the sake of simplification, is furthermore arranged inside the machine 10 to increase the pumping speed of the water. It is thus possible to drop from atmospheric pressure to treatment pressure (in practice of the order of 10 "2 Pa) in a few minutes.
- the machine 10 is also equipped with an electron gun 13 of the Leybold ESV 6 type with a rotating crucible with four cavities and a Joule effect evaporation source 14.
- a servo loop to the sources of evaporation.
- a ion gun 18, for example the Mark II type ion gun sold by COMMONWEALTH is also also placed inside this deposition chamber 12 for initial cleaning of the substrate 17, prior to the deposition of the first thin layer anti-reflection.
- FIG. 2 An example of a stack which can be obtained by the method according to the invention is illustrated in FIG. 2.
- an organic substrate 17 here in CR39 coated with an anti-abrasion varnish, available in commercially under the name ORMA SUPRA ® is coated with an antireflection stack 21 comprising an alternation of thin layers with high and low refractive indexes 21a - 21d.
- the first layer 21a is made of a material with a high refractive index, that is to say greater than 1.6. This material is here composed of zirconium oxide (ZrO 2 ) which is deposited on a physical thickness typically between 10 and 40 nm.
- ZrO 2 zirconium oxide
- the second layer 21b deposited on the first layer 21a is here composed of silica (SiO 2 ), that is to say a material with a low refractive index, and has a thickness typically between 10 and 55 nm.
- the third layer 21c deposited is here identical to the first layer 21a (ZrO 2 layer), except as regards the thickness, which is between 30 and 200 nm, and preferably between 120 and 150 nm.
- These three layers were deposited successively by vacuum evaporation by means of the machine 10 illustrated in FIG. 1.
- the materials constituting these three anti-reflection layers 21 a-21c as well as those constituting the substrate 17 or the abrasion-resistant varnish 20, can be replaced by other equivalent materials well known to those skilled in the art.
- the anti-reflection stack 21 further comprises and in accordance with the invention a hybrid outer layer 21 d with a low refractive index, the thickness of which is between 70 and 110 nm.
- this hybrid layer is formed from a mixture of silica (SiO 2 ) and an amorphous copolymer of 2,2-bistrifluoromethyl-4,5-difluoro-1, 3-dioxole and tetrafluoroethylene, commercially available under the trademark Teflon ® AF 1600 or Teflon ® AF 2400.
- amorphous fluorine-containing copolymers are soluble in perfluorinated solvents, and its structural formula is as follows (the ratio b: a, that is to say the dioxole / tetrafluoroethylene ratio is 2 for AF 1600 and 4.56 for AF 2400):
- Teflon ® AF 2400 was liquefied by means of the Joule effect evaporation source 14 before its evaporation by means of the same source.
- the silica can, in other embodiments, be replaced by magnesium fluoride (MgF 2 ), while the above-mentioned amorphous fluorinated copolymer can in particular be replaced by polytetrafluoroethylene.
- these amorphous fluorinated copolymers can be replaced by ® MP 1600 Teflon which is in the form of microparticles having an average size of 0.2 mm.
- the hybrid layer results from the coevaporation of silica and polytetrafluoroethylene (Teflon ® MP 1600), with a constant proportion of Teflon ® equal to 30%.
- Teflon ® MP 1600 polytetrafluoroethylene
- the substrate 17 thus obtained was subjected to the N ⁇ 10 shots test described in the international patent application WO 99/49097. This test solicits the adhesion of the thin layers deposited on an organic substrate. It has revealed that the stack 21 has good adhesion properties and, in in particular, that the hybrid layer 21 d adhered in a completely satisfactory manner to the underlying layer of ZrO 2 .
- Substrate 17 has also been subjected to the test called "iron wool test", according to which five round trips are made with an extra fine iron wool on a coated substrate in order to assess the scratch resistance of this one. this.
- This test also revealed that the anti-reflection stack 21 exhibited quite satisfactory scratch resistance.
- the measurement of the refractive index of the hybrid layer revealed a very interesting value of 1.42 for a wavelength of 630 nm. It will also be appreciated that the hybrid layer 21 d obtained by means of the method according to the invention has a homogeneous structure, of constant refractive index over its entire thickness, and is perfectly transparent in the visible.
- a hybrid layer whose index varies linearly from 1, 46 to 1, 33 going from the substrate towards the surface, corresponding to the proportions by volume of Teflon ® from from zero to about 80%.
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Physical Vapour Deposition (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602004017754T DE602004017754D1 (de) | 2003-09-04 | 2004-09-01 | Verfahren zur behandlung von antireflexionsbecshichtungen auf einem optischen substrat, so erhaltenes optisches substrat und vorrichtung zur durchführung des verfahrens |
JP2006525162A JP2007504500A (ja) | 2003-09-04 | 2004-09-01 | 光学基板上の反射防止被膜処理法と被膜処理された光学基板および被膜処理実施装置 |
EP04787278A EP1664367B1 (fr) | 2003-09-04 | 2004-09-01 | Procede de realisation d un traitement anti-reflets sur un substrat optique, substrat optique obtenu par ce procede et dispositif de mise en oeuvre du procede |
US10/569,406 US10011522B2 (en) | 2003-09-04 | 2004-09-01 | Method for treating antireflection coatings on an optical substrate, the thus obtained optical substrate and device for carrying gout said method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0310473 | 2003-09-04 | ||
FR0310473A FR2859485B1 (fr) | 2003-09-04 | 2003-09-04 | Procede de realisation d'un traitement anti-reflets sur un substrat optique, substrat optique obtenu par ce procede et dispositif de mise en oeuvre du procede |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024087A1 true WO2005024087A1 (fr) | 2005-03-17 |
Family
ID=34178793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/002222 WO2005024087A1 (fr) | 2003-09-04 | 2004-09-01 | Procede de realisation d'un traitement anti-reflets sur un substrat optique, substrat optique obtenu par ce procede et dispositif de mise en oeuvre du procede |
Country Status (7)
Country | Link |
---|---|
US (1) | US10011522B2 (fr) |
EP (1) | EP1664367B1 (fr) |
JP (1) | JP2007504500A (fr) |
AT (1) | ATE414185T1 (fr) |
DE (1) | DE602004017754D1 (fr) |
FR (1) | FR2859485B1 (fr) |
WO (1) | WO2005024087A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104129117A (zh) * | 2014-08-13 | 2014-11-05 | 苏州普京真空技术有限公司 | 一种氧化锆真空镀膜 |
WO2017103537A1 (fr) * | 2015-12-18 | 2017-06-22 | Essilor International (Compagnie Générale d'Optique) | Article comprenant une couche organique-inorganique de bas indice de réfraction |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003142262A (ja) * | 2001-11-06 | 2003-05-16 | Seiko Epson Corp | 電気光学装置、膜状部材、積層膜、低屈折率膜、多層積層膜、電子機器 |
FR2913116B1 (fr) * | 2007-02-23 | 2009-08-28 | Essilor Int | Procede de fabrication d'un article optique revetu d'un revetement anti-reflets ou reflechissant ayant des proprietes d'adhesion et de resistance a l'abrasion ameliorees |
US8318245B2 (en) | 2007-02-23 | 2012-11-27 | Essilor International (Compagnie Generale D'optique) | Method for producing an optical article coated with an antireflection or a reflective coating having improved adhesion and abrasion resistance properties |
JP2012514236A (ja) * | 2008-12-30 | 2012-06-21 | スリーエム イノベイティブ プロパティズ カンパニー | フッ素重合体多層光学フィルムを含む建築用物品及びその作成方法 |
WO2011139856A2 (fr) | 2010-04-29 | 2011-11-10 | Battelle Memorial Institute | Composition à indice de réfraction élevé |
US9335443B2 (en) | 2011-04-15 | 2016-05-10 | Qspex Technologies, Inc. | Anti-reflective lenses and methods for manufacturing the same |
US9042019B2 (en) | 2011-04-15 | 2015-05-26 | Qspex Technologies, Inc. | Anti-reflective lenses and methods for manufacturing the same |
WO2015009349A1 (fr) * | 2013-07-16 | 2015-01-22 | Qspex Technologies, Inc. | Lentilles antireflets et procédé de fabrication associés |
KR102010240B1 (ko) * | 2016-01-28 | 2019-08-13 | 한국화학연구원 | 발수 특성을 가지는 반사방지 필름 및 이의 제조방법 |
WO2017039342A1 (fr) * | 2015-09-01 | 2017-03-09 | 한국화학연구원 | Film barrière comprenant un film mince de fluoro-carbone et son procédé de fabrication |
EP3693765B1 (fr) * | 2019-02-05 | 2023-04-19 | Essilor International | Article revêtu ayant un revêtement antireflet présentant des propriétés optiques améliorées |
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WO2003056366A1 (fr) * | 2001-12-27 | 2003-07-10 | Essilor International Compagnie Generale D'optique | Article d'optique comportant une lame quart d'onde et son procede de fabrication. |
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2003
- 2003-09-04 FR FR0310473A patent/FR2859485B1/fr not_active Expired - Lifetime
-
2004
- 2004-09-01 US US10/569,406 patent/US10011522B2/en active Active
- 2004-09-01 EP EP04787278A patent/EP1664367B1/fr active Active
- 2004-09-01 JP JP2006525162A patent/JP2007504500A/ja active Pending
- 2004-09-01 AT AT04787278T patent/ATE414185T1/de not_active IP Right Cessation
- 2004-09-01 WO PCT/FR2004/002222 patent/WO2005024087A1/fr active Application Filing
- 2004-09-01 DE DE602004017754T patent/DE602004017754D1/de active Active
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104129117A (zh) * | 2014-08-13 | 2014-11-05 | 苏州普京真空技术有限公司 | 一种氧化锆真空镀膜 |
WO2017103537A1 (fr) * | 2015-12-18 | 2017-06-22 | Essilor International (Compagnie Générale d'Optique) | Article comprenant une couche organique-inorganique de bas indice de réfraction |
FR3045672A1 (fr) * | 2015-12-18 | 2017-06-23 | Essilor Int | Article comprenant une couche organique-inorganique de bas indice de refraction |
Also Published As
Publication number | Publication date |
---|---|
FR2859485B1 (fr) | 2006-09-15 |
US20060257557A1 (en) | 2006-11-16 |
EP1664367B1 (fr) | 2008-11-12 |
EP1664367A1 (fr) | 2006-06-07 |
US10011522B2 (en) | 2018-07-03 |
FR2859485A1 (fr) | 2005-03-11 |
ATE414185T1 (de) | 2008-11-15 |
DE602004017754D1 (de) | 2008-12-24 |
JP2007504500A (ja) | 2007-03-01 |
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