EP1131656A1 - Lentille portant un revetement de fa on a reduire la perception des taches - Google Patents

Lentille portant un revetement de fa on a reduire la perception des taches

Info

Publication number
EP1131656A1
EP1131656A1 EP99957744A EP99957744A EP1131656A1 EP 1131656 A1 EP1131656 A1 EP 1131656A1 EP 99957744 A EP99957744 A EP 99957744A EP 99957744 A EP99957744 A EP 99957744A EP 1131656 A1 EP1131656 A1 EP 1131656A1
Authority
EP
European Patent Office
Prior art keywords
coating
optical lens
coated optical
refractive index
lens according
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
Application number
EP99957744A
Other languages
German (de)
English (en)
Other versions
EP1131656A4 (fr
Inventor
Brandon Yip
Brian Douglas Adams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss Vision Australia Holdings Ltd
Original Assignee
Sola International Pty Ltd
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 Sola International Pty Ltd filed Critical Sola International Pty Ltd
Publication of EP1131656A1 publication Critical patent/EP1131656A1/fr
Publication of EP1131656A4 publication Critical patent/EP1131656A4/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
    • 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
    • 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

Definitions

  • the present invention relates to optical articles bearing a coating which reduces the visual perception of stains.
  • optical articles according to the present invention are preferably employed in the preparation of articles such as optical lenses, including spectacle lenses, including sunglass lenses, visors, shields, glass sheets, protective screens, and the like.
  • Sunglasses generally serve to attenuate transmitted light, but aside from the level of light transmittance, there are other features that distinguish different sunglass lenses, such as material, transmitted colour, scratch resistance, reduction of side glare, ultra-violet transmittance, cosmetic appearance etc.
  • Coatings e.g thin films, may be applied to enhance the performance of sunglass lenses. Such coatings include scratch resistant coatings, hydrophobic coatings for easier cleaning, anti-reflection coatings for reducing side glare or "mirror" (or “interference”) coatings for producing fashionable lens colours. Mirror coatings may also have other benefits such as contrast enhancement or the reduction of transmitted ultra-violet or infra-red light.
  • Anti-reflection coatings known in the prior art enhance vision by reducing parasitic reflections that can disturb the wearer. They are generally deposited on both sides of transparent ophthalmic lenses and on the back (eye-side) surface of higher-quality sunglass lenses. For ophthalmic lenses, such coatings also increase the transmission of light through to the wearer and improve the visibility of his eyes to others.
  • Both mirror and anti-reflection coatings known in the art are multilayer structures that achieve their optical properties by means of thin film interference effects.
  • the stain on the surface of the lens is highly visible, as it contrasts greatly with adjacent clean areas of the lens. Because of this high visibility, the lens is perceived to be difficult to clean and to keep clean.
  • the most common approach established in the prior art to make such lenses easier to clean is to coat the mirror or anti-reflection coating with an additional hydrophobic layer, which has a low surface energy and reduces the tendency for oily contaminants to attach to the coating. While this an improvement, oils nevertheless still can soil the coating, and when they do, they are highly visible.
  • the hydrophobic layer also has little effect on staining by greasy or fatty contaminants.
  • Gelber describes an anti-reflection coating for ophthalmic lenses that is designed to reduce the visibility of stains such as fingerprints and facial oils.
  • the patent is restricted to a two-layer, metal-dielectric anti-reflection coating so is of limited application.
  • United States Patent 5,847,876 (Ferrante and Ott) describes an anti-reflection coating that is "fingerprint-resistant".
  • the patent is restricted to two dielectric layers on glass substrates, so is again of limited application.
  • ophthalmic lenses could be provided with a coating or coatings of general applicability which could reduce the visibility of stains such as fingerprints and facial oils.
  • a coated optical lens including a lens element; and a stain masking coating on a surface of the lens element which coating does not substantially vary in colour when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; is a multi-layer coating, the thickness and/or number of whose layers are selected to reduce the visibility of stains; and functions as an anti-reflective or reflective (mirror) coating.
  • one or more surfaces of an optical lens may be coated with the stain masking coating.
  • the lens element may be either optically clear or tinted (light absorbing), such as a sunglass lens, ophthalmic lens element, visor or the like.
  • a sunglass lens is preferred.
  • ophthalmic lens element we mean all forms of individual refractive optical bodies employed in the ophthalmic arts, including, but not limited to, lenses, lens wafers and semi-finished lens blanks requiring further finishing to a particular patient's prescription.
  • the ophthalmic lenses may be formed from a variety of different lens materials, including glass and particularly from a number of different polymeric plastic resins.
  • a common ophthalmic lens material is diethylene glycol bis (allyl carbonate) or CR39 (PPG Industries).
  • Other examples of lens materials that may be suitable for use with the invention include other acrylics, other allylics, styrenics, polycarbonates, vinylics, polyesters and the like.
  • the stain masking coating is a multi-layer or interference coating.
  • stain masking we mean that the appearance of the coating is substantially similar either when it is clean or when it is stained by oily or greasy contaminants.
  • the visual appearance of the coated optical lens in reflected light can be quantified by measuring its reflectance spectrum in a spectrophotometer.
  • This spectral information may be reduced to three colour coordinates - a "lightness” corresponding primarily to the luminous intensity of the reflected light, and two chromatic attributes, the "hue” and “chroma” corresponding to the general colour (eg. red, blue, green etc.) and its vividness.
  • the Measurement of Appearance 2 nd ed., R.S. Hunter and R.W. Harold, Wiley, New York, 1987.
  • the term "colour” as used here refers to all three colour coordinates.
  • CMC colour differences are the limit of acceptability for textiles. Applicants have found that this is too stringent a tolerance for changes in appearance when anti-reflection or mirror coated lenses in the ophthalmic industry are stained. Applicants have observed that colour changes of up to 11 occurring when a mirror coated sunglass lens is stained are quite acceptable.
  • ⁇ E the reflected colour shift ( ⁇ E), when stained, is 8 or less, more preferably 6 or less.
  • optical interference coatings are designed to function in air, that is in a medium of refractive index equal to one. Accordingly, when stained, e.g. by body oils, and the like, the refractive index of which is approximately 1.3-1.6, there is normally a highly visible change in perceived colour.
  • the stain masking coating may be designed by selecting the number and/or thickness and/or materials of the layers in a multilayer coating utilising suitable computer software.
  • the stain masking coating may function as a mirror coating for a sunglass lens. Such a coating may preferably be applied to the convex surface of the lens. In another form, the stain masking coating may function as an anti-reflective coating, applied to the concave surface of a sunglass lens or on both surfaces of an ordinary lens.
  • the stain masking coating functions as a reflective (mirror) coating; and includes a plurality of layers of differing refractive index, wherein the thickness and/or number of the respective layers are selected to provide a desired reflectance; the reflectance not varying substantially in colour when stained.
  • the lower and higher refractive index layers may be formed from any suitable material.
  • the lower and higher refractive index layers may be formed of a dielectric material.
  • the dielectric layers may be formed from metal oxides, fluorides or nitrides and diamond-like carbon.
  • the dielectric material is selected from one or more of Al 2 0 3 , BaTi0 3 , Bi 2 0 3 , B 2 0 3 , Ce0 2 , Cr 2 0 3 ⁇ Ga 2 0 3 , Ge0 2 , Fe 2 0 3 , Hf0 2 , ln 2 0 3 , Indium-tin oxide, La 2 0 3 , MgO, Nd 2 0 3 , Nb 2 0 5 , Pr 2 0 3 , Sb 2 0 3 , Sc 2 0 3 , SiO, Si0 2 , Sn0 2 , Ta 2 0 5 , TiO, Ti0 2 , Ti0 3 , W0 3 , Y 2 0 3 , Yb 2 0 3 , ZnO, Zr0 2 , AIF 3 , BaF 2 , CaF 2 , CdF 2 , CeF 3 , HfF 4 , LaF 3 , LiF, MgF 2 , BaC
  • the lower refractive index layers include a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material and the higher refractive index layers are formed from a combination of titanium dioxide (Ti0 2 ) and praseodymium oxide (Pr 2 0 3 ).
  • a coated optical lens including a lens element; and a stain masking reflective (mirror) coating on a surface of the lens element which coating exhibits a reflected colour shift ( ⁇ E) of 6 or less when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; and includes at least three layers of differing refractive index whose thickness is selected to provide a desired reflectance; the lower refractive index layers including a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; the higher refractive index layers including titanium dioxide (Ti0 2 ) or a combination of titanium dioxide (Ti0 2 ) and praseodymium oxide (Pr 2 0 3 ).
  • ⁇ E reflected colour shift
  • the stain masking coating includes a first adhesion layer.
  • the adhesion layer is a metallic, e.g. Chromium (Cr) layer.
  • the stain masking coating may include a total of 4 to 6 alternating higher and lower index layers, preferably 4 to 6 alternating layers.
  • the stain masking coating functions as a reflective (mirror) coating and includes a plurality of dielectric and metallic layers, wherein the thickness and/or number of the respective layers are selected to provide a desired reflectance; the reflectance not varying substantially in colour when stained.
  • the dielectric materials may be formed from metal oxides, fluorides or nitrides and diamond-like carbon.
  • the dielectric material is selected from one or more of Al 2 0 3 , BaTi0 3 , Bi 2 0 3 , B 2 0 3 , Ce0 2 , Cr 2 ⁇ 3 , Ga 2 0 3 , Ge0 2 , Fe 2 0 3 , Hf0 2 , ln 2 0 3 , Indium-tin oxide, La 2 0 3 , MgO, Nd 2 0 3 , Nb 2 0 5 , Pr 2 0 3 , Sb 2 0 3 , Sc 2 0 3 , SiO, Si0 2 , Sn0 2 , Ta 2 0 5 , TiO, Ti0 2 , Ti0 3 , W0 3l Y 2 0 3 , Yb 2 0 3 , ZnO, Zr0 2 , AIF 3 , BaF 2 , CaF 2 .
  • the metallic materials may be selected from the metals, metal oxides or nitrides of one or more of Aluminium (Al), Chromium (Cr), Niobium (Nb), Nickel (Ni), Palladium (Pd), Tin (Sn), Tantalum (Ta), Titanium (Ti), Tungsten (W) or Zirconium (Zr).
  • a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material is preferred for the dielectric layers.
  • Chromium (Cr) or Niobium (Nb) is preferred for the light absorbing metallic layers.
  • a coated optical lens including a lens element; and a stain masking reflective (mirror) coating on a surface of the lens element which coating exhibits a reflected colour shift ( ⁇ E) of 6 or less when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; and includes at least three dielectric and metallic layers; wherein the dielectric layers are formed of a dielectric material and include a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; and the metallic materials include Chromium (Cr) or Niobium (Nb).
  • the stain masking coating functions as an anti-reflective coating and includes three or more layers of differing refractive index, wherein the thickness and/or number of the respective layers are selected to provide a desired reflectance; the reflectance not varying substantially in colour when stained
  • the lower and higher refractive index layers are formed of a dielectric material selected from one or more of Al 2 0 3 , BaTi0 3 , Bi 2 0 3, B 2 O 3, Ce0 2, Cr 2 0 3 , Ga 2 0 3 , Ge0 2 , Fe 2 0 3 , Hf0 2 , ln 2 0 3 , Indium-tin oxide, La 2 0 3 , MgO, Nd 2 0 3, Nb 2 0 5 , Pr 2 0 3 , Sb 2 0 3 , Sc 2 0 3 , SiO, Si0 2 , Sn0 2 , Ta 2 0 5 , TiO, Ti0 2 , Ti 2 0 3 , Ti 3 0 5 , W0 3 , Y 2 0 3 , Yb 2 0 3 , ZnO, Zr0 2 , AIF 3 , BaF 2 , CaF 2 , CdF 2 , CeF 3> HfF 4 , LaF
  • the lower refractive index layers include a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; and the higher refractive index layers are formed from titanium dioxide (Ti0 2 ) or a combination of titanium dioxide (Ti0 2 ) and praseodymium oxide (Pr 2 0 3 ).
  • a coated optical lens including a lens element; and a stain masking, anti-reflective coating on a surface of the lens element which coating exhibits a reflected colour shift ( ⁇ E) of 6 or less when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; and includes at least three layers of differing refractive index whose thickness is selected to provide a desired reflectance; the lower refractive index layers including a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; the higher refractive index layers including titanium dioxide (Ti0 2 ) or a combination of titanium dioxide (Ti0 2 ) and praseodymium oxide (Pr 2 ⁇ 3 ).
  • the stain masking coating functions as an anti-reflective coating and includes three or more dielectric and metallic layers, wherein the thickness and/or number of the respective layers are selected to provide a desired reflectance; the reflectance not varying substantially in colour when stained.
  • the dielectric layer(s) is formed from a dielectric material selected from one or more of Al 2 0 3 , BaTi0 3 , Bi 2 0 3 , B 2 0 3 , Ce0 2 , Cr 2 0 3 , Ga 2 0 3 , Ge0 2 , Fe 2 0 3 , Hf0 2
  • the metallic layer(s) is formed from a metallic material selected from the metals, metal oxides or metal nitrides of one or more of Aluminium (Al), Chromium (Cr), Niobium (Nb), Nickel (Ni), Palladium (Pd), Tin (Sn), Tantalum (Ta), Titanium (Ti), Tungsten (W) or Zirconium (Zr).
  • the dielectric layer(s) include a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; and the metallic material(s) is Niobium (Nb) or Chromium (Cr).
  • a coated optical lens including a lens element; and a stain masking, anti-reflective coating on a surface of the lens element which coating exhibits a reflected colour shift ( ⁇ E) of 6 or less when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; and includes at least three layers of differing refractive index whose thickness is selected to provide a desired reflectance; wherein the dielectric layers are formed of a dielectric material and include a silica (Si0 2 ) or magnesium fluoride (MgF 2 ) material; and the metallic materials include Chromium (Cr) or Niobium (Nb).
  • the optical lens may further include one or more additional coatings.
  • a multi-coated optical lens including a lens element; and a coating on surface of the lens element that does not substantially vary in colour when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; and a secondary coating which provides a desirable optical and/or mechanical property to the optical article.
  • the secondary coating may underlay the stain masking coating or be applied to a second surface of the lens element.
  • the secondary coating may be of any suitable type.
  • the secondary coating may be one or more of an anti-reflective, abrasion resistant, or impact-resistant hydrophobic and adhesion coatings.
  • An abrasion-resistant coating is preferred.
  • the combination of an abrasion resistant coating and an anti-reflective coating is particularly preferred.
  • the secondary coating is an anti- reflective coating applied to the opposite surface of the lens element.
  • the stain masking coating functions as a reflective (mirror) coating or anti-reflective coating as described above.
  • one or both surfaces of the optical article may be subjected to a surface treatment to improve bondability and/or compatibility of the stain masking and/or secondary coating.
  • the surface treatment may be selected from one or more of the group consisting of plasma discharge, corona discharge, glow discharge, ionising radiation, UV radiation, flame treatment and laser, preferably excimer laser treatment.
  • a plasma discharge treatment is preferred.
  • the surface treatment may include incorporating another adhesion layer, for example a layer including a metal or metal compound selected from the group consisting of one or more of Chromium, Nickel, Tin, Palladium, Silicon, and/or oxides thereof.
  • a metal or metal compound selected from the group consisting of one or more of Chromium, Nickel, Tin, Palladium, Silicon, and/or oxides thereof.
  • a method for preparing a coated optical lens which method includes providing a lens element; a metallic material or a higher refractive index material; and a lower refractive index material; depositing overlapping layers of lower refractive index material and higher refractive index material or metallic material on a surface of the optical lens element, the number and/or thickness of the respective layers being selected to produce a stain masking coating which coating does not substantially vary in colour when stained by contaminants having a refractive index in the range of approximately 1.3 to 1.6; O 00/31569 .. .. PCT/AU99/01025
  • ⁇ is a multi-layer coating, the thickness and/or number of which are selected to reduce the visibility of stains; and functions as an anti-reflective or reflective (mirror) coating.
  • the high and low refractive index materials preferably Ti0 2 or Pr 2 ⁇ 3 /Ti0 2 and Si0 2 , are deposited as alternating layers.
  • the metallic material and low refractive index materials are deposited as alternating layers. More preferably, the metallic material is Niobium (Nb) or Chromium (Cr).
  • the deposition step may be a vacuum deposition step.
  • the deposition step may be conducted in a coating apparatus.
  • a box coater or sputter coater may be used.
  • Figure 1 illustrates a known anti-reflective coating on the surface of a lens when contaminated by an oil droplet.
  • Figure 2 illustrates a similar view to Figure 1 where the oil is able to wet the coating surface.
  • Figure 3 illustrates the measured reflectance spectra of a hard resin lens coated on both sides with a stain-masking coating according to the present invention.
  • Figure 4 illustrates the measured reflectance spectra of a hard resin lens coated on both sides with a typical prior art anti-reflection coating.
  • Figure 5 illustrates the measured reflectance spectra of a hard resin lens coated on one side with a stain-masking blue mirror coating according to the present invention.
  • Figure 6 illustrates the measured reflectance spectra of a hard resin lens coated on one side with a typical, prior art blue mirror coating.
  • Figure 1 illustrates a typical known anti-reflective coating on the surface of a standard optical lens.
  • the luminous reflectance i.e. that visible to the human eye
  • the front surface of the lens is shown - the other surface of the lens would normally be coated identically.
  • the coating When the coating is stained by a liquid contaminant such as finger oil, the liquid either wets the surface of the lens or "beads up,” depending on the contaminant and how it interacts with the surface of the coating.
  • a liquid contaminant such as finger oil
  • Commercial anti- reflective ophthalmic lenses may be treated with a "hydrophobic" surface layer, which has very low surface energy and is not easily wet by any liquid. It causes oily contaminants to bead on the surface of the lens, and they are easily removed by wiping, due to the low attraction of the liquid to the hydrophobic surface. This is the situation illustrated in Figure 1. However, if the contaminant is not a liquid, the hydrophobic coating is less effective in reducing soiling.
  • the soiled area of the coating has two components of reflection - a first reflection from the surface of the contaminant and a second reflection from the coating underneath the contaminant.
  • the layer of contamination on the surface of the coating will be at least of the order of several microns in thickness. Since this thickness is much greater than the wavelengths of visible light, the two reflections do not interfere coherently.
  • the top reflection then is spectrally white, with an intensity given by p
  • the top reflection is of the order of 2%, as shown in the figure. This reflection is unavoidable and cannot be eliminated by interference effects.
  • the coating may be designed according to the present invention so that there is no perceptible change in colour of the coating whether it is clean or stained. In this case, the stain is not easily seen on the lens. However, a compromise must be reached between designing the coating to best mask stains (which necessarily implies a reflectance of 2% when clean or soiled), and designing the coating to be as anti-reflective as possible when clean (which corresponds to a reflectance of 0%).
  • Table 1 illustrates the optical design for a stain-masking anti-reflection coating according to the present invention.
  • the first example of the invention is a multi-layer coating that achieves a satisfactory compromise between anti-reflectivity and stain minimisation and the corresponding coated article.
  • the coating may be designed to reflect with the same colour whether clean or stained so that stains are less visible.
  • Table 2 illustrates the optical design for a stain-masking, blue mirror coating according to the present invention.
  • the stain masking mirror coating is not limited in colour to blue. With appropriate coating design software, it is possible to specifically design stain masking mirror coatings of a wide variety of hues and lightnesses.
  • Table 4 summarises the coating designs and measured colours of both stain masking and non-stain masking mirror coatings that have been variously produced on tinted CR39, glass and polycarbonate lenses by the Applicants.
  • the thicknesses of the Si ⁇ 2, Ti0 2 and Ti0 2 /Pr2 ⁇ 3 layers are indicated in nanometres.
  • the illuminant is the CIE llluminant C. Also indicated are the stained colour shifts expected from calculations, from which it can be seen that the design calculations give a good indication of the performance likely to be achieved in real coatings.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

L'invention concerne une lentille optique portant un revêtement, comprenant un élément de lentille, et un revêtement masquant les tâches sur une surface de l'élément de lentille, lequel revêtement ne change sensiblement pas de couleur lorsqu'il est taché par des contaminants présentant un indice de réfraction situé dans la plage d'environ 1,3 à 1,6. Ce revêtement est un revêtement multicouche dont l'épaisseur et/ou le nombre sont sélectionnés, afin de réduire la visibilité des tâches. L'invention concerne également des fonctions de revêtement (miroir) réfléchissant ou anti-réfléchissant.
EP99957744A 1998-11-20 1999-11-18 Lentille portant un revetement de fa on a reduire la perception des taches Ceased EP1131656A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPP7236A AUPP723698A0 (en) 1998-11-20 1998-11-20 Coated lens
AUPP723698 1998-11-20
PCT/AU1999/001025 WO2000031569A1 (fr) 1998-11-20 1999-11-18 Lentille portant un revetement de façon a reduire la perception des taches

Publications (2)

Publication Number Publication Date
EP1131656A1 true EP1131656A1 (fr) 2001-09-12
EP1131656A4 EP1131656A4 (fr) 2002-03-20

Family

ID=3811445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957744A Ceased EP1131656A4 (fr) 1998-11-20 1999-11-18 Lentille portant un revetement de fa on a reduire la perception des taches

Country Status (3)

Country Link
EP (1) EP1131656A4 (fr)
AU (1) AUPP723698A0 (fr)
WO (1) WO2000031569A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2882443B1 (fr) * 2005-02-21 2007-04-13 Essilor Int Couche dlc antisalissure
US8613520B2 (en) 2008-07-11 2013-12-24 Li-Cor, Inc. Process of forming a light beam path in a dielectric mirror
US8317342B2 (en) 2008-07-11 2012-11-27 Li-Cor, Inc. Surface preparation method for eliminating optical interference from absorption cavity mirrors
KR102409481B1 (ko) * 2014-05-23 2022-06-16 코닝 인코포레이티드 감소된 스크래치 및 지문 가시성을 갖는 저 명암의 반사-방지 제품
IT201800000730A1 (it) * 2018-01-11 2019-07-11 Coerent Srl Strato di rivestimento per lenti
KR102686791B1 (ko) * 2019-05-22 2024-07-19 어플라이드 머티어리얼스, 인코포레이티드 고온 부식성 환경을 위한 기판 지지부 커버
CN110216934B (zh) * 2019-07-15 2021-07-23 浙江星星科技股份有限公司 一种超硬防蓝光显示面板

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WO1995017303A1 (fr) * 1993-12-21 1995-06-29 Minnesota Mining And Manufacturing Company Film optique multicouche
JPH1045435A (ja) * 1996-07-31 1998-02-17 Central Glass Co Ltd 低反射ガラス

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JPS5195858A (en) * 1975-01-14 1976-08-23 ****** *** *ku***chi*se*ku*******ka*****************chi***ne********
JPS56138701A (en) * 1980-03-31 1981-10-29 Minolta Camera Co Ltd Antireflection film
JPH05188202A (ja) * 1992-01-10 1993-07-30 Canon Inc 多層光学薄膜
US5725959A (en) * 1993-03-18 1998-03-10 Canon Kabushiki Kaisha Antireflection film for plastic optical element
US5729323A (en) * 1994-07-29 1998-03-17 Baush & Lomb Incorporated Light-absorbing and anti-reflective coating for sunglasses
US5847876A (en) * 1996-06-25 1998-12-08 Mcdonnell Douglas Fingerprint resistant anti-reflection coatings

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
WO1995017303A1 (fr) * 1993-12-21 1995-06-29 Minnesota Mining And Manufacturing Company Film optique multicouche
JPH1045435A (ja) * 1996-07-31 1998-02-17 Central Glass Co Ltd 低反射ガラス

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06, 30 April 1998 (1998-04-30) & JP 10 045435 A (CENTRAL GLASS CO LTD), 17 February 1998 (1998-02-17) *
See also references of WO0031569A1 *

Also Published As

Publication number Publication date
EP1131656A4 (fr) 2002-03-20
AUPP723698A0 (en) 1998-12-17
WO2000031569A1 (fr) 2000-06-02

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