EP1769194A1 - Rückflächenspiegel - Google Patents

Rückflächenspiegel

Info

Publication number
EP1769194A1
EP1769194A1 EP05741745A EP05741745A EP1769194A1 EP 1769194 A1 EP1769194 A1 EP 1769194A1 EP 05741745 A EP05741745 A EP 05741745A EP 05741745 A EP05741745 A EP 05741745A EP 1769194 A1 EP1769194 A1 EP 1769194A1
Authority
EP
European Patent Office
Prior art keywords
layer
rear surface
surface mirror
silver
mirror 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.)
Withdrawn
Application number
EP05741745A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael Scheler
Wieland STÖCKL
Hein Uhlig
Norbert Kaiser
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP1769194A1 publication Critical patent/EP1769194A1/de
Withdrawn legal-status Critical Current

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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
    • C03C17/3663—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties specially adapted for use as mirrors
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3618—Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3639—Multilayers containing at least two functional metal layers
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3644—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the metal being silver
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0808—Mirrors having a single reflecting layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G02B5/085—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal
    • 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
    • C03C2218/154—Deposition methods from the vapour phase by sputtering
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension

Definitions

  • the present invention relates to a rear surface mirror, in particular a temperature-resistant silver-containing rear surface mirror.
  • Such mirrors are used in particular as a coating of glass panes before the thermal deformation / processing or spielmik as reflectors in lamps.
  • Silver has the highest reflection for visible light of all metals.
  • Rear surface reflectors for the visible spectral region therefore often consist of a glass substrate which is coated on one side with silver.
  • the light to be reflected enters the glass substrate through the uncoated or antireflected front surface, penetrates the glass substrate and is reflected on the silver-coated substrate rear surface.
  • the optical power (reflection) of a silver rear-surface reflector is in a very favorable ratio to its comparatively low production outlay.
  • Unprotected silver coatings are not resistant to climate, in particular in moist, oxygen- and sulfur-containing atmospheres, but corrode and turn dark.
  • the glass substrate protects the silver layer against climatic action and the air-side boundary surface of the silver layer can without regard to optical requirements with cover layers, topcoats or glued-on cover plates to be sealed.
  • the mechanical instability of silver layers is on the one hand their low hardness and scratch resistance and on the other hand their weak adhesion to glass.
  • the above-mentioned sealing measures often not only act as climate protection, but also as scratch protection for the silver reflector layer.
  • the adhesion of the silver layer on the substrate is to be improved, the substrate surface is coated with an adhesion-promoting intermediate layer before application of the silver layer.
  • this intermediate layer lies on the light incident side of the reflector, the choice of material and thickness of this layer is limited by the requirement that the intermediate layer may not significantly reduce the reflection. Satisfy the production costs, reflection and aging resistance of conventionally constructed silver-based rear-view mirrors, as long as these mirrors are not exposed to high temperatures.
  • a further limitation for the temperature stability of silver layers is given by its evaporation ge. Er ⁇ from the known vapor pressure of silver is a layer removal pays off in a vacuum at 650 0 C to 20 nm / hour. Although the evaporation rate of the atmosphere is considerably reduced by backscattering, at high temperatures the increasing silver evaporation should contribute substantially to the mass transport.
  • This object is achieved by the rear surface mirror according to claim 1.
  • Advantageous developments of the rear surface mirror according to the invention are given in the dependent claims. Uses of such rear surface mirrors are given in claim 12.
  • a rear surface mirror is produced in such a way that a silver layer is applied on the rear side on a substrate transparent to the light to be reflected, for example glass or quartz glass.
  • an underlayer which consists of a refractory oxide or contains this and has a higher melting point than the silver of the silver layer, is inserted between the substrate and the silver layer.
  • a cover layer is applied which consists of or contains a high-melting metal, in particular ruthenium, iridium, osmium, palladium, platinum, rhenium and / or rhodium. Particularly advantageous is a
  • Zirconium dioxide has a melting temperature of 2700 0 C and ruthenium has a melting temperature of 2300 0 C, so-that the melting temperature of the underlayer and the cover layer is higher than the melting temperature of the silver.
  • a thin adhesion-promoting Wolf ⁇ ram harsh having a melting temperature of 3400 0 C can be inserted between the silver layer and the cover layer.
  • the Ru ⁇ then used for the top layer is chemically extremely stable and is sitting among the precious metals, the greatest hardness. It is therefore particularly suitable for use as a cover layer.
  • the layer system is therefore constructed so that the silver layer is incorporated with a melting temperature of 961 0 C between two substantially higher melting layers which no Diffusionsef ⁇ at 600 0 C fect show and thus ren the silver layer stabilisie ⁇ .
  • the layer structure according to the invention has the high reflection and the low production costs of silver-based reflector systems, but is characterized by an extraordinarily high temperature stability compared with conventional silver-based reflector systems. Compared with other silver-based systems, at least twice the service life resulted consistently in comparative experiments with a completely undestroyed silver layer.
  • the single figure shows the layer structure of a back surface mirror, as used for quartz glass bulbs of halogen lamps with a power of 50 W.
  • a quartz glass bulb was used, to which a zirconia under layer 4 having a thickness of 10 nm was applied.
  • a silver layer 3 was applied with a thickness of 600 nm.
  • an adhesion-promoting tungsten layer 5 with a thickness of 65 nm and a ruthenium layer 6 with a thickness of 500 nm. All layers were applied by vacuum coating (sputtering or ion-supported vapor deposition).
  • the incident light Ia now penetrates the quartz glass bulb 2 and the zirconium dioxide lower layer 4 and is reflected on the surface of the silver layer 3 as reflected light 1.
  • the bulb of the halogen lamp warmed to more than 600 ° C.
  • the reflection of the rear surface mirror deposited thereon according to FIG. 1 was maintained over a period of operation of more than 2000 hours without any measurable impairment.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Surface Treatment Of Glass (AREA)
EP05741745A 2004-07-16 2005-05-17 Rückflächenspiegel Withdrawn EP1769194A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004034369A DE102004034369B4 (de) 2004-07-16 2004-07-16 Halogenlampe
PCT/EP2005/005350 WO2006007895A1 (de) 2004-07-16 2005-05-17 Rückflächenspiegel

Publications (1)

Publication Number Publication Date
EP1769194A1 true EP1769194A1 (de) 2007-04-04

Family

ID=34967469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05741745A Withdrawn EP1769194A1 (de) 2004-07-16 2005-05-17 Rückflächenspiegel

Country Status (8)

Country Link
US (1) US20080096010A1 (ko)
EP (1) EP1769194A1 (ko)
JP (1) JP2008506977A (ko)
KR (1) KR20070038097A (ko)
CN (1) CN1997852A (ko)
CA (1) CA2573725A1 (ko)
DE (1) DE102004034369B4 (ko)
WO (1) WO2006007895A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006011973B4 (de) * 2006-03-15 2011-04-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Spiegel mit einer Silberschicht
DE102008003363B4 (de) 2007-01-15 2011-06-01 Von Ardenne Anlagentechnik Gmbh Rückseitenspiegel
US8318260B2 (en) * 2009-05-15 2012-11-27 Nano CMS Co., Ltd Method for electroless deposition of nano metallic silver and reflector of high reflectance deposited by nano metallic silver using the same
JP2011242648A (ja) * 2010-05-19 2011-12-01 Nippon Electric Glass Co Ltd 反射部材
JP5678885B2 (ja) * 2010-08-26 2015-03-04 日本電気硝子株式会社 波長変換素子、光源及び液晶用バックライトユニット
US10378732B2 (en) * 2017-06-06 2019-08-13 Musco Corporation Apparatus, method, and system for precise LED lighting
KR102040489B1 (ko) * 2017-11-06 2019-11-05 한국원자력연구원 은거울 및 이의 제조방법
US10336651B1 (en) * 2018-07-16 2019-07-02 Guardian Glass, LLC Coated article with IR reflecting layer(s) and silicon zirconium oxynitride layer(s) and method of making same

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US4256988A (en) * 1977-01-17 1981-03-17 Thorn Lighting Limited Incandescent halogen lamp with protective envelope coating
JPS61165953A (ja) * 1985-01-16 1986-07-26 松下電子工業株式会社 カラ−デイスプレイ用電球
US5433988A (en) * 1986-10-01 1995-07-18 Canon Kabushiki Kaisha Multi-layer reflection mirror for soft X-ray to vacuum ultraviolet ray
IL86366A0 (en) * 1988-05-12 1988-11-15 Luz Ind Israel Ltd Protected silvered substrates and mirrors containing the same
US5135808A (en) * 1990-09-27 1992-08-04 Diamonex, Incorporated Abrasion wear resistant coated substrate product
US5589280A (en) * 1993-02-05 1996-12-31 Southwall Technologies Inc. Metal on plastic films with adhesion-promoting layer
US6128126A (en) * 1993-04-15 2000-10-03 Balzers Aktiengesellschaft High-reflection silver mirror
JPH09259838A (ja) * 1996-03-19 1997-10-03 Iwasaki Electric Co Ltd ハロゲン電球
US5958605A (en) * 1997-11-10 1999-09-28 Regents Of The University Of California Passivating overcoat bilayer for multilayer reflective coatings for extreme ultraviolet lithography
GB9816922D0 (en) * 1998-08-04 1998-09-30 Pilkington Plc Improvements in coating glass
US6382816B1 (en) * 1999-12-23 2002-05-07 General Eectric Company Protected coating for energy efficient lamp
DE10016008A1 (de) * 2000-03-31 2001-10-11 Zeiss Carl Villagensystem und dessen Herstellung
WO2002060686A1 (en) * 2001-01-29 2002-08-08 Honeywell International Inc. Robust highly reflective optical construction
JP4031285B2 (ja) * 2001-04-24 2008-01-09 三井化学株式会社 ランプリフレクターおよび反射体
CN1237376C (zh) * 2001-04-24 2006-01-18 三井化学株式会社 灯反射器和反射器
DK1558950T3 (da) * 2002-11-05 2006-08-14 Bekaert Sa Nv En infrarödt reflekterende, lagdelt struktur

Non-Patent Citations (1)

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Title
See references of WO2006007895A1 *

Also Published As

Publication number Publication date
JP2008506977A (ja) 2008-03-06
DE102004034369B4 (de) 2007-04-26
US20080096010A1 (en) 2008-04-24
KR20070038097A (ko) 2007-04-09
WO2006007895A1 (de) 2006-01-26
CN1997852A (zh) 2007-07-11
DE102004034369A1 (de) 2006-02-16
CA2573725A1 (en) 2006-01-26

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