EP0774618A1 - Reflector for a radiant light source and use of it - Google Patents

Reflector for a radiant light source and use of it Download PDF

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Publication number
EP0774618A1
EP0774618A1 EP96116453A EP96116453A EP0774618A1 EP 0774618 A1 EP0774618 A1 EP 0774618A1 EP 96116453 A EP96116453 A EP 96116453A EP 96116453 A EP96116453 A EP 96116453A EP 0774618 A1 EP0774618 A1 EP 0774618A1
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EP
European Patent Office
Prior art keywords
reflector
layer
reflector according
radiation
light source
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Withdrawn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
EP96116453A
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German (de)
French (fr)
Inventor
Uwe Gampe
Stefan Greif
Jörg Dr. Hartge
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Heraeus Medical GmbH
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Heraeus Medical GmbH
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Filing date
Publication date
Application filed by Heraeus Medical GmbH filed Critical Heraeus Medical GmbH
Publication of EP0774618A1 publication Critical patent/EP0774618A1/en
Withdrawn legal-status Critical Current

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    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres

Definitions

  • the invention relates to a reflector for a radiating light source, which consists of metal and the reflecting surface of which is provided with an interference layer, and the use of such a reflector.
  • DE 25 35 174 A1 describes a reflector for selective radiation light sources, such as e.g. Lamps whose spectrum consists of individual lines or a few narrow bands, known, the reflector made of high reflectance material and having a protective layer that is created so that the interference colors created by the protective layer mix to white light and the unpleasant color effects in the scattered light how they can occur with line spectra can be avoided.
  • selective radiation light sources such as e.g. Lamps whose spectrum consists of individual lines or a few narrow bands
  • the object of the present invention is to filter out undesired spectral components such as infrared radiation or red light components, in particular of temperature radiators, for example halogen incandescent lamps, from the radiation emitted in order to improve the color properties, to retain the heat associated with the radiation in the luminaire housing and if necessary, dissipate the heat associated with the radiation via luminaire housings using convection and radiation.
  • undesired spectral components such as infrared radiation or red light components, in particular of temperature radiators, for example halogen incandescent lamps
  • the task is used according to use in a lamp provided with a radiation source for medical applications.
  • the interference filter is designed such that it acts as an anti-reflective coating on the metal surface and thus undesirable radiation in the form of heat can penetrate into the surface.
  • the layer lying on the surface and the cover layer of the interference layer consists of silicon dioxide.
  • the inner reflecting surface 2 of the reflector 1 has a plurality of flat facets 3 in the form of a grid radiating from the opening 4 for the light source, which ensure largely shadow-free and uniform illumination of the illuminated field, since each facet in each case almost the entire operation or Illuminated lighting field.
  • the grid radiating from the opening 4 is shown in FIG. 2.
  • a large number of layers are applied to the aluminum blank 1 'of the reflector, which layers alternately consist of a high-index material and a low-index material. At least one layer consists of metal.
  • the layer sequence of low refraction, high refraction can be repeated several times, although it is also possible to have a high refraction layer on the metal and only then a low refraction layer; the outer cover layer D consists essentially of silicon dioxide and serves as a protective layer against mechanical or chemical attacks on the reflector surface.
  • the thickness of the individual layers is in the range from 50 nm to 2000 nm, with incident light from a wavelength of 400 nm being absorbed more and more by the reflector 1, so that radiation components of the red and infrared spectral range are damped and an overall shift of the visible spectrum in the direction of a shorter length wave, ie into the blue area.
  • the long-wave areas absorbed by the reflector 1 (red, infrared) are converted into heat by absorption in the reflector 1, which is passed on by means of radiation and convection in the direction facing away from the reflector opening, which is denoted by number 6 in FIG.
  • the reflector axis leading through the opening 4 is designated by 5.
  • the heat associated with the radiation is passed on from the reflector 1 in direction 6 by means of thermal radiation or convection to the rear part of the luminaire housing.
  • a total of 15 layers 8 to 22 are applied to the aluminum blank 1 ', which alternately consist of quartz with respect to the layers 8, 10, 12, 14, 16, 18, 20, 22 and titanium oxide with respect to the layers 9, 11, 13, 15, 17, 19, 21 exist.
  • absorbing metal can be embedded between the interfaces of the layers or in the layers themselves - preferably in the inner layers; aluminum, for example, can be used as the adsorbing metal.
  • the absorption maximum is at a wavelength of 700 to 750 nm and the adsorption in the near infrared range is above 50%, so that the light largely freed from thermal radiation is preferably used in a medical lamp or surgical lamp;
  • the relatively light reflectors made of aluminum are particularly inexpensive to use, since the problems arising with the adjustment of the radiation angle or adjustment of the illumination angle can only be adjusted with a small amount of force on the part of the surgeon due to the small mass.
  • the layer structure shown in FIG. 3 is subject to the curvature of the reflector, which, however, is not shown in the detail here.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Radiation-Therapy Devices (AREA)
  • Optical Filters (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The concave surface (2) of the reflector (1) carries a number of plane facets (3) providing uniform lighting with minimal shadows. The aluminium base is covered with a succession of 15 coatings composed alternately of quartz and titanium dioxide which constitute an interference filter. The thickness of each coating is between 0.05 and 2 mu m. The absorption spectrum has a maximum at a wavelength between 700 and 750 nm with more than 50% absorption in the near infrared band. The lightweight structure is easily movable for adjustment of the angle of illumination.

Description

Die Erfindung betrifft einen Reflektor für eine strahlende Lichtquelle, der aus Metall besteht und dessen reflektierende Oberfläche mit einer Interferenzschicht versehen ist sowie die Verwendung eines solchen Reflektors.The invention relates to a reflector for a radiating light source, which consists of metal and the reflecting surface of which is provided with an interference layer, and the use of such a reflector.

Aus der DE 25 35 174 A1 ist ein Reflektor für Selektiv-Strahlenlichtquellen, wie z.B. Lampen deren Spektrum aus einzelnen Linien oder wenigen schmalen Banden besteht, bekannt, wobei der Reflektor aus Material hohen Reflexionsgrades besteht und eine Schutzschicht aufweist, die so geschaffen ist, daß die durch die Schutzschicht entstehenden Interferenzfarben sich zu weißem Licht mischen und die unangenehmen Farbeffekte im Streulicht, wie sie bei Linienspektren auftreten werden können, vermieden werden.DE 25 35 174 A1 describes a reflector for selective radiation light sources, such as e.g. Lamps whose spectrum consists of individual lines or a few narrow bands, known, the reflector made of high reflectance material and having a protective layer that is created so that the interference colors created by the protective layer mix to white light and the unpleasant color effects in the scattered light how they can occur with line spectra can be avoided.

Als problematisch erweist sich der Einsatz solcher bekannter Reflektoren, falls eine Wirkung als Kaltlichtspiegel erwünscht ist, bei dem eine Farbkonversion in Richtung kurzwelliges Lichts vorgenommen wird und vorgegebene Anteile des Spektrums, wie z.B. Anteile des Infrarot-Spektrums und auch Teile des Rot-Spektrums absorbiert werden sollen; denn der aus der DE 25 35 174 A1 bekannte Spiegel reflektiert auch die Rot- bzw. Infrarot-Anteile der erzeugten Strahlung.The use of such known reflectors proves to be problematic if an effect as a cold light mirror is desired, in which a color conversion in the direction of short-wave light is carried out and predetermined portions of the spectrum, such as e.g. Parts of the infrared spectrum and also parts of the red spectrum are to be absorbed; because the mirror known from DE 25 35 174 A1 also reflects the red or infrared portions of the radiation generated.

Aufgabe der vorliegenden Erfindung ist es, unerwünschte Spektral-Anteile wie z.B. Infrarot-Strahlung oder auch Rotlicht-Anteile insbesondere von Temperaturstrahlern, beispielsweise Halogen-Glühlampen, zwecks Verbesserung der Farbeigenschaften aus der abgegebenen Strahlung herauszufiltern, die mit der Strahlung verbundene Wärme im Leuchtengehäuse zurückzuhalten und ggf. die mit der Strahlung verbundene Wärme über Leuchtengehäuse mittels Konvektion und Ausstrahlung abzuführen.The object of the present invention is to filter out undesired spectral components such as infrared radiation or red light components, in particular of temperature radiators, for example halogen incandescent lamps, from the radiation emitted in order to improve the color properties, to retain the heat associated with the radiation in the luminaire housing and if necessary, dissipate the heat associated with the radiation via luminaire housings using convection and radiation.

Die Aufgabe wird vorrichtungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The object is achieved according to the device by the characterizing features of claim 1.

Als vorteilhaft erweist sich die einfache Herstellung des Reflektors durch einen einfachen Preß- bzw. Drückvorgang mit geringen Werkzeugkosten.The simple manufacture of the reflector by means of a simple pressing or pressing process with low tool costs has proven to be advantageous.

Weitere vorteilhafte Ausgestaltungen des Reflektors sind in den Ansprüchen 2 bis 6 angegeben.Further advantageous refinements of the reflector are specified in claims 2 to 6.

Die Aufgabe wird verwendungsgemäß in einer mit Strahlenquelle versehenen Leuchte für medizinische Anwendungen eingesetzt.The task is used according to use in a lamp provided with a radiation source for medical applications.

Als besonders vorteilhaft erweist es sich, daß das Interferenzfilter so ausgebildet ist, daß es wie eine Entspiegelung der Metalloberfläche wirkt und damit unerwünschte Strahlung in Form von wärme in die Oberfläche eindringen kann.It proves to be particularly advantageous that the interference filter is designed such that it acts as an anti-reflective coating on the metal surface and thus undesirable radiation in the form of heat can penetrate into the surface.

In einer vorteilhaften Ausgestaltung der Erfindung nach Anspruch 2 besteht die auf der Oberfläche aufliegende Schicht und die Deckschicht der Interferenzschicht aus Siliziumdioxid besteht.In an advantageous embodiment of the invention according to claim 2, the layer lying on the surface and the cover layer of the interference layer consists of silicon dioxide.

Als vorteilhaft erweist sich die Verwendung in einer Leuchte für medizinische Anwendungen, insbesondere Operationsleuchte, da das Gewicht des Reflektors gegenüber einem üblichen Glasreflektor stark reduziert ist.The use in a lamp for medical applications, in particular an operating lamp, has proven to be advantageous, since the weight of the reflector is greatly reduced compared to a conventional glass reflector.

Im folgenden ist der Gegenstand der Erfindung anhand der Figuren 1, 2 und 3 näher erläutert.

  • Figur 1 zeigt als Ausführungsbeispiel einen Reflektor, dessen reflektierende Innenfläche als Teil der Oberfläche eines Ellipsoiden ausgebildet ist;
  • Figur 2 zeigt eine Draufsicht auf den inneren Teil des Reflektors nach Figur 1;
  • In Figur 3 ist beispielhaft das Schema einer Schichtenfolge auf der reflektierenden Oberfläche des Reflektors nach Figur 1, bzw. Figur 2 dargestellt.
The subject matter of the invention is explained in more detail below with reference to FIGS. 1, 2 and 3.
  • FIG. 1 shows an exemplary embodiment of a reflector whose reflecting inner surface is designed as part of the surface of an ellipsoid;
  • FIG. 2 shows a top view of the inner part of the reflector according to FIG. 1;
  • FIG. 3 shows an example of the scheme of a layer sequence on the reflecting surface of the reflector according to FIG. 1 or FIG. 2.

Gemäß Figur 1 weist die innere spiegelnde Oberfläche 2 des Reflektors 1 eine Vielzahl von ebenen Facetten 3 in Form eines strahlenförmig von der Öffnung 4 für die Lichtquelle ausgehenden Rasters auf, welche für eine weitgehend schattenfreie und gleichmäßige Ausleuchtung des beleuchteten Feldes sorgen, da jede Facette jeweils nahezu das gesamte Operations- bzw. Beleuchtungsfeld ausleuchtet. Das strahlenförmig von der Öffnung 4 ausgehende Raster ist anhand der Figur 2 erkennbar dargestellt.According to Figure 1, the inner reflecting surface 2 of the reflector 1 has a plurality of flat facets 3 in the form of a grid radiating from the opening 4 for the light source, which ensure largely shadow-free and uniform illumination of the illuminated field, since each facet in each case almost the entire operation or Illuminated lighting field. The grid radiating from the opening 4 is shown in FIG. 2.

Wie Figur 3 zu entnehmen ist, wird auf den aus Aluminium bestehenden Rohling 1' des Reflektors eine Vielzahl von Schichten aufgebracht, die wechselweise aus einem hochbrechenden Material, und aus einem niedrig brechenden Material bestehen. Dabei besteht wenigstens eine Schicht aus Metall. Die Schichtfolge niedrig brechend, hoch brechend, kann sich dabei mehrfach wiederholen, wobei es jedoch auch möglich ist, auf das Metall eine hoch brechende Schicht und erst dann eine niedrig brechende Schicht folgen zu lassen; die äußere Deckschicht D besteht im wesentlichen aus Siliziumdioxid und dient als Schutzschicht gegen mechanische oder auch chemische Angriffe gegenüber der Reflektoroberfläche. Die Dicke der einzelnen Schichten liegt im Bereich von 50 nm bis 2000 nm, wobei auftreffendes Licht ab einer Wellenlänge von 400 nm mit zunehmender Wellenlänge auch zunehmend stärker vom Reflektor 1 absorbiert wird, so daß Strahlungsanteile des roten und infraroten Spektralbereiches gedämpft werden und eine Gesamtverschiebung des sichtbaren Spektrums in Richtung kürzerer Längenwelle, d.h. in den blauen Bereich hin erfolgt. Die vom Reflektor 1 absorbierten langwelligen Bereiche (rot, infrarot) werden durch Absorption im Reflektor 1 in Wärme umgewandelt, die mittels Strahlung und Konvektion in die der Reflektoröffnung abgewandte Richtung, die in Figur 1 mit Ziffer 6 bezeichnet ist, weitergeleitet. Die durch die Öffnung 4 führende Reflektorachse ist mit 5 bezeichnet.As can be seen in FIG. 3, a large number of layers are applied to the aluminum blank 1 'of the reflector, which layers alternately consist of a high-index material and a low-index material. At least one layer consists of metal. The layer sequence of low refraction, high refraction can be repeated several times, although it is also possible to have a high refraction layer on the metal and only then a low refraction layer; the outer cover layer D consists essentially of silicon dioxide and serves as a protective layer against mechanical or chemical attacks on the reflector surface. The thickness of the individual layers is in the range from 50 nm to 2000 nm, with incident light from a wavelength of 400 nm being absorbed more and more by the reflector 1, so that radiation components of the red and infrared spectral range are damped and an overall shift of the visible spectrum in the direction of a shorter length wave, ie into the blue area. The long-wave areas absorbed by the reflector 1 (red, infrared) are converted into heat by absorption in the reflector 1, which is passed on by means of radiation and convection in the direction facing away from the reflector opening, which is denoted by number 6 in FIG. The reflector axis leading through the opening 4 is designated by 5.

Aufgrund der besonderen Ausgestaltung des Interferenzfilters aus Schichten aus Titandioxid und Quarz wird die mit der Strahlung verbundene Wärme vom Reflektor 1 ausgehend in Richtung 6 mittels Wärmestrahlung oder Konvektion an den rückwärtigen Teil des Leuchtengehäuses weitergeleitet.Due to the special design of the interference filter made of layers of titanium dioxide and quartz, the heat associated with the radiation is passed on from the reflector 1 in direction 6 by means of thermal radiation or convection to the rear part of the luminaire housing.

In der praktischen Ausführungsform nach Figur 3 sind auf den Aluminium-Rohling 1' insgesamt 15 Schichten 8 bis 22 aufgebracht, die wechselweise aus Quarz bezüglich der Schichten 8, 10, 12, 14, 16, 18, 20, 22 und Titanoxid bezüglich der Schichten 9, 11, 13, 15, 17, 19, 21 bestehen. Zur verbesserten Absorption der unerwünschten Strahlung durch den Reflektor kann zwischen den Grenzflächen der Schichten oder in den Schichten selbst - vorzugsweise in den inneren Schichten - absorbierendes Metall eingelagert werden; als adsorbierendes Metall kann beispielsweise Aluminium eingesetzt werden.In the practical embodiment according to FIG. 3, a total of 15 layers 8 to 22 are applied to the aluminum blank 1 ', which alternately consist of quartz with respect to the layers 8, 10, 12, 14, 16, 18, 20, 22 and titanium oxide with respect to the layers 9, 11, 13, 15, 17, 19, 21 exist. For improved absorption of the undesired radiation by the reflector, absorbing metal can be embedded between the interfaces of the layers or in the layers themselves - preferably in the inner layers; aluminum, for example, can be used as the adsorbing metal.

Somit ist es möglich, eine Leuchte mit einem Reflektor zu schaffen, der im Verhältnis zu Glasreflektoren sehr leicht ausgebildet ist; in einer bevorzugten Ausführungsform liegt das Absorptionsmaximum bei einer Wellenlänge von 700 bis 750 nm und die Adsorption beträgt im nahen Infrarot-Bereich über 50%, so daß das von Wärmestrahlung weitgehend befreite Licht vorzugsweise in einer medizinischen Leuchte, bzw. Operationsleuchte eingesetzt wird; insbesondere bei Operationsleuchten sind die verhältnismäßig leichten Reflektoren aus Aluminium besonders günstig einzusetzen, da die mit der Verstellung von Abstrahlungswinkel, bzw. Einstellung des Beleuchtungswinkels auftretenden Probleme nur mit einem geringen Kraftaufwand des Operateurs aufgrund der geringen Masse zu verstellen sind.It is thus possible to create a lamp with a reflector which is very light in relation to glass reflectors; In a preferred embodiment, the absorption maximum is at a wavelength of 700 to 750 nm and the adsorption in the near infrared range is above 50%, so that the light largely freed from thermal radiation is preferably used in a medical lamp or surgical lamp; In the case of surgical lights in particular, the relatively light reflectors made of aluminum are particularly inexpensive to use, since the problems arising with the adjustment of the radiation angle or adjustment of the illumination angle can only be adjusted with a small amount of force on the part of the surgeon due to the small mass.

Der in Figur 3 dargestellte Schichtenaufbau ist in der Praxis der Reflektorkrümmung unterworfen, die hier jedoch in dem Ausschnitt nicht dargestellt ist.In practice, the layer structure shown in FIG. 3 is subject to the curvature of the reflector, which, however, is not shown in the detail here.

Claims (7)

Reflektor für eine strahlende Lichtquelle, der aus Metall besteht und dessen reflektierende Oberfläche mit einer Interferenzschicht versehen ist, dadurch gekennzeichnet, daß auf die aus Aluminium bestehende Oberfläche abwechselnd hoch und niedrig brechende Schichten aus Oxiden und Metallen aufgetragen sind, deren Schichtdicke im Bereich von 0,05 µm bis 2 µm liegt.Reflector for a radiating light source, which consists of metal and whose reflecting surface is provided with an interference layer, characterized in that alternately high and low refractive index layers of oxides and metals are applied to the surface consisting of aluminum, the layer thickness of which is in the range from 0. 05 µm to 2 µm. Reflektor nach Anspruch 1, dadurch gekennzeichnet, daß die auf der Oberfläche aufliegende Schicht aus Titandioxid besteht.Reflector according to claim 1, characterized in that the layer lying on the surface consists of titanium dioxide. Reflektor nach Anspruch 1, dadurch gekennzeichnet, daß die auf der Oberfläche aufliegende Schicht aus Siliziumdioxid besteht.Reflector according to claim 1, characterized in that the layer lying on the surface consists of silicon dioxide. Reflektor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß wenigstens eine Schicht aus Metall besteht.Reflector according to one of claims 1 to 3, characterized in that at least one layer consists of metal. Reflektor nach Anspruch 4, dadurch gekennzeichnet, daß die Schicht aus Aluminium besteht.Reflector according to claim 4, characterized in that the layer consists of aluminum. Reflektor nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Deckschicht der Interferenzschicht aus Siliziumdioxid besteht.Reflector according to one of claims 1 to 5, characterized in that the cover layer of the interference layer consists of silicon dioxide. Verwendung eines Reflektors nach einem der Ansprüche 1 bis 6, in einer mit Strahlenquelle versehenen Leuchte für medizinische Anwendungen.Use of a reflector according to one of claims 1 to 6, in a lamp provided with a radiation source for medical applications.
EP96116453A 1995-11-20 1996-10-15 Reflector for a radiant light source and use of it Withdrawn EP0774618A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543005A DE19543005C2 (en) 1995-11-20 1995-11-20 Reflector for a selectively radiating light source and use in a luminaire
DE19543005 1995-11-20

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EP0774618A1 true EP0774618A1 (en) 1997-05-21

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JP (1) JPH09171708A (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015087116A1 (en) 2013-12-13 2015-06-18 Dmy Mühendi̇sli̇k Elektri̇k Maki̇ne İnşaat Ve Bi̇li̇şi̇m San. Ti̇c. Ltd. Şti̇. A reflector for illumination
EP3415173A1 (en) * 2017-06-13 2018-12-19 IMT Masken und Teilungen AG Surface coating for a medical instrument, medical instrument with a surface coating and method for producing a surface coating for a medical instrument

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910192C2 (en) * 1999-03-09 2002-04-04 Schott Auer Gmbh Reflector with a concave, rotationally symmetrical body and a faceted reflection surface
DE10311907B4 (en) * 2003-03-17 2006-11-02 Schollglas Holding- und Geschäftsführungsgesellschaft mbH Shower cabin with bricked and / or transparent shower partitions
DE102015225085A1 (en) * 2015-12-14 2017-06-14 Osram Gmbh Reflector and gas discharge lamp with the reflector for improved color reproduction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112483A (en) * 1976-07-28 1978-09-05 Optical Coating Laboratory, Inc. Lighting fixture and method using multiple reflections
DE8906325U1 (en) * 1989-05-22 1989-11-16 Kitazawa Multicoat Co., Ltd., Kanagawa, Jp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535179A1 (en) * 1975-08-06 1977-02-24 Siemens Ag Endless type band with interchangeable type - is for high speed printer and has two mounting holes set with alignment for each type carrier
DE2604921C3 (en) * 1976-02-09 1984-03-08 W.C. Heraeus Gmbh, 6450 Hanau Lighting devices for medical or dental purposes
GB2229264A (en) * 1989-03-16 1990-09-19 Toshiba Lighting & Technology Lighting fixture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112483A (en) * 1976-07-28 1978-09-05 Optical Coating Laboratory, Inc. Lighting fixture and method using multiple reflections
DE8906325U1 (en) * 1989-05-22 1989-11-16 Kitazawa Multicoat Co., Ltd., Kanagawa, Jp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015087116A1 (en) 2013-12-13 2015-06-18 Dmy Mühendi̇sli̇k Elektri̇k Maki̇ne İnşaat Ve Bi̇li̇şi̇m San. Ti̇c. Ltd. Şti̇. A reflector for illumination
EP3415173A1 (en) * 2017-06-13 2018-12-19 IMT Masken und Teilungen AG Surface coating for a medical instrument, medical instrument with a surface coating and method for producing a surface coating for a medical instrument
US10556033B2 (en) 2017-06-13 2020-02-11 IMT Masken und Teilungen AG Surface coating for a medical instrument, medical instrument having a surface coating, and method for producing a surface coating for a medical instrument

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DE19543005A1 (en) 1997-05-22
DE19543005C2 (en) 2003-12-18
JPH09171708A (en) 1997-06-30

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