EP0339130A2 - Lighting fixture with halogen lamp - Google Patents

Lighting fixture with halogen lamp Download PDF

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Publication number
EP0339130A2
EP0339130A2 EP88118811A EP88118811A EP0339130A2 EP 0339130 A2 EP0339130 A2 EP 0339130A2 EP 88118811 A EP88118811 A EP 88118811A EP 88118811 A EP88118811 A EP 88118811A EP 0339130 A2 EP0339130 A2 EP 0339130A2
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EP
European Patent Office
Prior art keywords
lamp bulb
light
interference filter
lighting arrangement
lamp
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Granted
Application number
EP88118811A
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German (de)
French (fr)
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EP0339130A3 (en
EP0339130B1 (en
Inventor
Jürgen Dr. Witt
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Heraeus Medical GmbH
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WC Heraus GmbH and Co KG
Heraeus Medical GmbH
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Application filed by WC Heraus GmbH and Co KG, Heraeus Medical GmbH filed Critical WC Heraus GmbH and Co KG
Priority to DE8817192U priority Critical patent/DE8817192U1/en
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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
    • 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
    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/804—Surgical or dental spotlight

Definitions

  • the invention relates to a lighting arrangement with a light bulb provided with a lamp bulb and with a reflector assigned to the light source, an interference filter consisting of several layers being applied to at least part of the outer surface of the lamp bulb, which has a high permeability for visible light and a high reflectivity for Has infrared light.
  • halogen incandescent lamps in various types of optical systems, such as studio and surgical lights, or daylight projectors for foils, with the smallest possible proportion of infrared light emerging in the direction of radiation in order to reduce the heat radiation in the lighting field. This is usually done by reflectors, which transmit infrared light and reflect the visible light and / or by filters at the light exit openings, which largely absorb the infrared light component.
  • a cylindrical halogen incandescent lamp with a filament guided along the cylinder axis of the lamp bulb is known, the lamp bulb of which is coated on the outside with a multilayer body acting as an interference filter, which contains the infrared components of the light generated in the lamp reflects on the filament while it transmits the visible portions of the generated light.
  • the interference filter has layers with alternating high and low refractive indices, the materials of these layers consisting essentially of silicon dioxide and tantalum pentoxide.
  • interference filters Another application of interference filters is known from DE-GM 18 09 322, in which a cold light mirror that is permeable to heat rays is described, the surface of which is covered with a series of interfering dielectric layers made of alternately higher and lower refractive substances; Silicon oxide and titanium oxide or tantalum oxide are used as layer materials.
  • the object of the invention is to achieve the simplest possible infrared light shielding of the illumination field by geometrically assigning the light source and reflector and by partially coating the outer bulb surface of the light source, the lamp and reflector being relatively inexpensive despite their optimal effectiveness.
  • a preferred embodiment is a halogen incandescent lamp with a base on one side, which is coated in such a way that infrared radiation emerges in the base region or in the dome region of the lamp bulb or in both regions.
  • FIG. 1a shows a halogen incandescent lamp according to the invention in longitudinal section
  • FIG. 1b shows a longitudinal section through an operating light
  • the halogen incandescent lamp with a base on one side has a cylinder-symmetrical lamp bulb 1, the side walls 2 of which are provided with an interference layer 3 in the cylinder jacket region.
  • the interference layer has layers with alternating high and low refractive indices, the infrared components of the light generated in the lamp being reflected into the interior of the lamp bulb.
  • the coating known from DE-OS 32 27 096 can be used as the interference layer; outside the actual cylinder jacket area, i.e. in the area of the dome 4 of the bulb or in the base area 5, the bulb is without an interference layer and thus transparent to infrared light.
  • the infrared radiation generated in the lamp or reflected by the interference layer in the bulb emerges at a defined solid angle ⁇ along the cylinder axis 6 of the lamp bulb 1.
  • the solid angle ⁇ is in the range from 20 to 160 °.
  • the visible light radiating through the interference layer 3 reaches the reflector 7 partly directly, partly via deflection mirror 12, from which it is reflected into the actual illumination field; the infrared radiation, however, emerges through the uncoated base area 5 of the lamp bulb 1; it is led out of the optical system via the opening 8 in the reflector system 11 or the part of the reflector system 11 which transmits infrared light, and reaches heat-absorbing bodies directly or indirectly, which are not shown in FIG. 1b for a better overview; in the case of indirect radiation of the heat-absorbing bodies, the infrared light is guided to the heat-absorbing bodies via deflection mirrors. It is of course also possible to arrange the lamp bulb by rotating it through 180 ° such that the area of the dome 4 of the lamp bulb 1 is adjacent to the opening 8 located in the reflector system 11 or the part transmitting infrared light.
  • the lamp according to the invention thus provides a spatial separation of the exit directions from visible light and infrared radiation.
  • the optical system surrounding the lamp is designed in such a way that only the filament of the lamp is imaged in the light field, the light field is almost free of annoying heat radiation.
  • the exemplary embodiment is explained using a halogen incandescent lamp; However, it is also possible to use a gas discharge lamp with a lamp bulb instead of the halogen incandescent lamp, the outer surface of which is provided with an interference filter which surrounds the discharge path of the lamp.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

Eine Beleuchtungsanordnung aus einer Lichtquelle mit Lampenkolben und einem Reflektor weist ein auf einen Teil der Außenfläche des Lampenkolbens aufgebrachtes Interferenzfilter auf, das eine hohe Durchlässigkeit für sichtbares Licht und ein hohes Reflexionsvermögen für Infrarotlicht besitzt; der für Infrarotlicht durchlässige Lampenkolbenbereich ist solchen Bereichen des Reflektors benachbart, die Infrarotlicht absorbierend oder transmittierend ausgebildet sind.A lighting arrangement comprising a light source with a lamp bulb and a reflector has an interference filter applied to a part of the outer surface of the lamp bulb, which has a high permeability for visible light and a high reflectivity for infrared light; the lamp bulb region which is permeable to infrared light is adjacent to those regions of the reflector which are designed to absorb or transmit infrared light.

Description

Die Erfindung betrifft eine Beleuchtungsanordnung mit einer mit einem Lampen­kolben versehenen Lichtquelle und mit einem der Lichtquelle zugeordneten Reflektor, wobei auf wenigstens einem Teil der Außenfläche des Lampenkolbens ein aus mehreren Schichten bestehendes Interferenzfilter aufgebracht ist, das eine hohe Durchlässigkeit für sichtbares Licht und ein hohes Reflexions­vermögen für Infrarotlicht aufweist.The invention relates to a lighting arrangement with a light bulb provided with a lamp bulb and with a reflector assigned to the light source, an interference filter consisting of several layers being applied to at least part of the outer surface of the lamp bulb, which has a high permeability for visible light and a high reflectivity for Has infrared light.

Es ist bekannt, Halogenglühlampen in verschiedenartigen optischen Systemen, wie beispielsweise Studio- und Operationsleuchten, oder Tageslichtprojektoren für Folien, einzusetzen, wobei stets ein möglichst geringer Infrarotlicht­anteil in Strahlungsrichtung austreten soll, um die Wärmestrahlung im Beleuch­tungsfeld zu reduzieren. Dies geschieht in der Regel durch Reflektoren, welche Infrarotlicht transmittieren und das sichtbare Licht reflektieren und/oder durch Filter an den Lichtaustrittsöffnungen, welche den Infrarotlichtanteil zum großen Teil absorbieren.It is known to use halogen incandescent lamps in various types of optical systems, such as studio and surgical lights, or daylight projectors for foils, with the smallest possible proportion of infrared light emerging in the direction of radiation in order to reduce the heat radiation in the lighting field. This is usually done by reflectors, which transmit infrared light and reflect the visible light and / or by filters at the light exit openings, which largely absorb the infrared light component.

Aus der DE-OS 32 27 096 ist eine zylindrische Halogenglühlampe mit einer entlang der Zylinderachse des Lampenkolbens geführten Glühwendel bekannt, deren Lampenkolben auf seiner Außenseite mit einem als Interferenzfilter wirkenden Mehrschichtkörper beschichtet ist, welcher die Infrarotanteile des in der Lampe erzeugten Lichtes auf die Wendel reflektiert, während er die sichtbaren Anteile des erzeugten Lichtes transmittiert. Das Interferenzfilter weist dabei Schichten mit alternierend hohem und niedrigem Brechungsindex auf, wobei die Materialen dieser Schichten im wesentlichen aus Siliziumdioxid und Tantalpentoxid bestehen. Durch eine ausreichend gute Justierung der Glühwendel entlang der Symmetrieachse des Lampenkolbens wird die reflektierte Infrarot­strahlung zum Teil von der Glühwendel absorbiert. Dadurch reduziert sich der Anteil der transmittierten Infrarotstrahlung, wobei der Wirkungsgrad der Lampe verbessert wird.From DE-OS 32 27 096 a cylindrical halogen incandescent lamp with a filament guided along the cylinder axis of the lamp bulb is known, the lamp bulb of which is coated on the outside with a multilayer body acting as an interference filter, which contains the infrared components of the light generated in the lamp reflects on the filament while it transmits the visible portions of the generated light. The interference filter has layers with alternating high and low refractive indices, the materials of these layers consisting essentially of silicon dioxide and tantalum pentoxide. By a sufficiently good adjustment of the filament along the axis of symmetry of the lamp bulb, the reflected infrared radiation is partially absorbed by the filament. This reduces the proportion of transmitted infrared radiation, and the efficiency of the lamp is improved.

Eine ähnliche Anordnung ist aus der US-PS 4,689,519 bekannt, nach der eine Glühlampe im zylinderförmigen Mittelteil ihres langgestreckten Lampenkolbens mit einem Interferenzfilter versehen ist, das die von der Wendel erzeugte Infrarot-Strahlung zur Reduzierung von Wärmeverlusten in den Lampenkolben reflektiert; das Filter besteht aus alternierend angeordneten Schichten mit einem niedrigen und einem hohen Brechnungsindex, wobei Siliziumdioxid und Tantalpentoxid eingesetzt werden; die beiden Kolbenenden sind ohne Tantalpent­oxidbeschichtung, da eine Reflexion des Infrarotlichts auf die Wendel von hier aus uneffektiv ist.A similar arrangement is known from US Pat. No. 4,689,519, according to which an incandescent lamp is provided in the cylindrical central part of its elongated lamp bulb with an interference filter which reflects the infrared radiation generated by the filament to reduce heat losses in the lamp bulb; the filter consists of alternating layers with a low and a high refractive index, using silicon dioxide and tantalum pentoxide; the two ends of the piston are without tantalum pentoxide coating, since reflection of the infrared light on the filament is ineffective from here.

Weiterhin sind aus der DE-OS 15 89 095 Gasentladungslampen bekannt, deren Kolben mit einem optischen Interferenzfilter aus mehreren Teilschichten mit unterschiedlichen Brechungsindex versehen sind, um eine hitzebeständige Filteranordnung zur Erzeugung von farbneutralem Licht herzustellen.Furthermore, from DE-OS 15 89 095 gas discharge lamps are known, the bulbs of which are provided with an optical interference filter made of several partial layers with different refractive index, in order to produce a heat-resistant filter arrangement for generating color-neutral light.

Eine weitere Anwendung von Interferenzfiltern ist aus dem DE-GM 18 09 322 bekannt, in dem ein für Wärmestrahlen durchlässiger Kaltlichtspiegel beschrie­ben ist, dessen Oberfläche mit einer Reihe von interferierenden Dielektrikum­schichten aus abwechselnd höher und niedrigbrechenden Substanzen bedeckt ist; als Schichtmaterialien werden dabei Siliziumoxid und Titanoxid oder Tantaloxid eingesetzt.Another application of interference filters is known from DE-GM 18 09 322, in which a cold light mirror that is permeable to heat rays is described, the surface of which is covered with a series of interfering dielectric layers made of alternately higher and lower refractive substances; Silicon oxide and titanium oxide or tantalum oxide are used as layer materials.

Bei Halogenglühlampen kleinerer Abmessungen ist es nicht möglich, durch Reflexion des Infrarotanteils an einem auf dem Kolben aufgebrachten Interferenzfilter das Infrarotlicht in der Wendel zu absorbieren, da die Symmetrieachse der Wendel in der Regel nicht mit der Symmetrieachse des Lampenkolbens zusammenfällt und in üblichen Ausführungsformen (z.B. einseitig gesockelte Lampe) senkrecht darauf steht.In the case of halogen incandescent lamps of smaller dimensions, it is not possible to absorb the infrared light in the filament by reflecting the infrared portion of an interference filter mounted on the bulb, since the axis of symmetry of the filament generally does not coincide with the axis of symmetry of the lamp bulb and in conventional embodiments (e.g. one-sided base lamp) is perpendicular to it.

Falls trotzdem eine Beschichtung des Lampenkolbens mit einem Interferenzfilter erfolgen würde, hätte dies eine Vielfachreflexion zur Folge, die jedoch infolge der Teildurchlässigkeit der Interferenzschicht schließlich zu einer Transmission des Infrarotanteils führen würde. Eine Reduzierung des Infrarot­anteils wäre praktisch kaum zu erzielen.If the lamp bulb were nevertheless coated with an interference filter, this would result in multiple reflection, which, however, would ultimately lead to transmission of the infrared component due to the partial permeability of the interference layer. It would be practically impossible to reduce the infrared portion.

Die Erfindung stellt sich die Aufgabe, durch geometrische Zuordnung von Licht­quelle und Reflektor sowie durch teilweise Beschichtung der äußeren Kolben­fläche der Lichtquelle eine möglichst einfache Infrarotlicht-Abschirmung des Beleuchtungsfeldes zu erzielen, wobei Lampe und Reflektor trotz optimaler Wirksamkeit verhältnismäßig preisgünstig sind.The object of the invention is to achieve the simplest possible infrared light shielding of the illumination field by geometrically assigning the light source and reflector and by partially coating the outer bulb surface of the light source, the lamp and reflector being relatively inexpensive despite their optimal effectiveness.

Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung sind den Unteransprüchen zu entnehmen.The object is achieved by the characterizing features of claim 1. Further advantageous refinements of the subject matter of the invention can be found in the subclaims.

Bei einer bevorzugten Ausführungsform handelt es sich um eine einseitig gesockelte Halogenglühlampe, die so beschichtet ist, daß im Sockelbereich oder im Kuppelbereich des Lampenkolbens bzw. in beiden Bereichen Infrarotstrahlung austritt.A preferred embodiment is a halogen incandescent lamp with a base on one side, which is coated in such a way that infrared radiation emerges in the base region or in the dome region of the lamp bulb or in both regions.

Als vorteilhaft erweist sich der Wegfall von Filter und Filterhalterung, so daß sich ein verhältnismäßig einfacher, auch ohne Fachpersonal zu wartender Aufbau ergibt. Dies wikt sich insbesondere bei Operationsleuchten mit einer Vielzahl von einzelnen Lichtquellen als vorteilhaft aus. Darüber hinaus wird die Ersatzteilbevorratung vereinfacht, da keine separaten Infrarotstrahlung absorbierenden Filter mehr erforderlich sind.The elimination of the filter and filter holder has proven to be advantageous, so that the result is a relatively simple structure that can also be maintained without specialist personnel. This is particularly advantageous for surgical lights with a large number of individual light sources. In addition, the spare parts inventory is simplified because no separate infrared radiation absorbing filters are required.

Im folgenden ist der Gegenstand der Erfindung anhand eines Ausführungs­beispiels in der Zeichnung nachfolgend näher erläutert.The subject matter of the invention is explained in more detail below using an exemplary embodiment in the drawing.

Figur 1a zeigt im Längsschnitt eine erfindungsgemäße Halogenglühlampe, während in Figur 1b ein Längsschnitt durch eine Operationsleuchte dargestellt ist.FIG. 1a shows a halogen incandescent lamp according to the invention in longitudinal section, while FIG. 1b shows a longitudinal section through an operating light.

Gemäß Figur 1a weist die einseitig gesockelte Halogenglühlampe einen zylinder­symmetrischen Lampenkolben 1 auf, dessen Seitenwände 2 im Zylindermantel­bereich mit einer Interferenzschicht 3 versehen sind. Die Interferenzschicht weist Schichten mit alterniered hohem und niedrigem Brechungsindex auf, wobei die Infrarotanteile des in der Lampe erzeugten Lichtes in das Innere des Lampenkolbens reflektiert werden. Als Interferenzschicht kann dabei beispiels­weise die aus der DE-OS 32 27 096 bekannte Beschichtung eingesetzt werden; außerhalb des eigentlichen Zylindermantelbereiches, d.h. im Bereich der Kuppel 4 des Kolbens bzw. im Sockelbereich 5 ist der Kolben ohne Interferenzschicht und somit für Infrarotlicht durchlässig. Die in der Lampe erzeugte bzw. über die Interferenzschicht in den Kolben reflektierte Infrarotstrahlung tritt in einem definierten Raumwinkel α entlang der Zylinderachse 6 des Lampenkolbens 1 aus. Der Raumwinkel α liegt im Bereich von 20 bis 160°.According to FIG. 1a, the halogen incandescent lamp with a base on one side has a cylinder-symmetrical lamp bulb 1, the side walls 2 of which are provided with an interference layer 3 in the cylinder jacket region. The interference layer has layers with alternating high and low refractive indices, the infrared components of the light generated in the lamp being reflected into the interior of the lamp bulb. For example, the coating known from DE-OS 32 27 096 can be used as the interference layer; outside the actual cylinder jacket area, i.e. in the area of the dome 4 of the bulb or in the base area 5, the bulb is without an interference layer and thus transparent to infrared light. The infrared radiation generated in the lamp or reflected by the interference layer in the bulb emerges at a defined solid angle α along the cylinder axis 6 of the lamp bulb 1. The solid angle α is in the range from 20 to 160 °.

Gemäß Figur 1b gelangt das durch die Interferenzschicht 3 strahlende sichtbare Licht teilweise direkt, teilweise über Umlenkspiegel 12 auf den Reflektor 7, von dem es in das eigentliche Beleuchtungsfeld reflektiert wird; die Infrarot­strahlung tritt dagegen durch den unbeschichteten Sockelbereich 5 des Lampen­kolbens 1 aus; sie wird über die im Reflektorsystem 11 befindliche Öffnung 8 bzw. den Infrarotlicht transmittierenden Teil des Reflektorsystems 11 aus dem optischen System hinausgeführt und gelangt direkt oder indirekt auf wärmeabsorbierende Körper, die zwecks besserer Übersicht in Figur 1b nicht dargestellt sind; bei indirekter Bestrahlung der wärmeabsorbierenden Körper wird das Infrarot licht über Umlenkspiegel zu den wärmeabsorbierenden Körpern geleitet. Es ist selbstverständlich auch möglich, dem Lampenkolben durch Drehung um 180° so anzuordnen, daß der Bereich der Kuppel 4 des Lampenkolbens 1 der im Reflektorsystem 11 befindlichen Öffnung 8 bzw. dem Infrarotlicht transmittierenden Teil benachbart ist.According to FIG. 1b, the visible light radiating through the interference layer 3 reaches the reflector 7 partly directly, partly via deflection mirror 12, from which it is reflected into the actual illumination field; the infrared radiation, however, emerges through the uncoated base area 5 of the lamp bulb 1; it is led out of the optical system via the opening 8 in the reflector system 11 or the part of the reflector system 11 which transmits infrared light, and reaches heat-absorbing bodies directly or indirectly, which are not shown in FIG. 1b for a better overview; in the case of indirect radiation of the heat-absorbing bodies, the infrared light is guided to the heat-absorbing bodies via deflection mirrors. It is of course also possible to arrange the lamp bulb by rotating it through 180 ° such that the area of the dome 4 of the lamp bulb 1 is adjacent to the opening 8 located in the reflector system 11 or the part transmitting infrared light.

Weiterhin ist auch der Einsatz von Lampenkolben möglich, die sowohl im Bereich der Kuppel 4 als auch im Sockelbereich 5 für Infrarotlicht durchlässig sind; entsprechend Figur 1b wird in einem solchen Fall der aus der Kuppel 4 austretende Infrarotlichtanteil über Umlenkspiegel 12 entlang der Achse 6 des Lampenkolbens in die im Reflektorsystem 11 befindliche Öffnung 8 bzw. dem Infrarotlicht transmittierenden Teil des Reflektorsystems geleitet.It is also possible to use lamp bulbs which are transparent to infrared light both in the area of the dome 4 and in the base area 5; 1b in such a case, the infrared light component emerging from the dome 4 is guided via deflection mirrors 12 along the axis 6 of the lamp bulb into the opening 8 in the reflector system 11 or the part of the reflector system which transmits infrared light.

Während des Betriebes treten in radialer Richtung (zur Zylinderachse 6) Strahlenbündel sichtbaren Lichts mit maximaler Intensität aus, während in axialer Richtung Strahlenbündel von Infrarotlicht mit maximaler Intensität austreten. Es erfolgt somit durch die erfindungsgemäße Lampe eine räumliche Trennung der Austrittsrichtungen von sichtbarem Licht und Infrarotstrahlung.During operation, beams of visible light emerge at maximum intensity in the radial direction (to cylinder axis 6), while beams of infrared light emerge at maximum intensity in the axial direction. The lamp according to the invention thus provides a spatial separation of the exit directions from visible light and infrared radiation.

Ist das die Lampe umgebende optische System so ausgelegt, daß lediglich die Wendel der Lampe im Leuchtfeld abgebildet wird, so ist das Leuchtfeld nahezu frei von störender Wärmestrahlung.If the optical system surrounding the lamp is designed in such a way that only the filament of the lamp is imaged in the light field, the light field is almost free of annoying heat radiation.

Das Ausführungsbeispiel ist zwar anhand einer Halogenglühlampe erläutert; es ist jedoch auch möglich, anstelle der Halogenglühlampe eine Gasentladungslampe mit einem Lampenkolben einzusetzen, dessen äußere Fläche mit einem Interferenzfilter versehen ist, das die Entladungsstrecke der Lampe umschließt.The exemplary embodiment is explained using a halogen incandescent lamp; However, it is also possible to use a gas discharge lamp with a lamp bulb instead of the halogen incandescent lamp, the outer surface of which is provided with an interference filter which surrounds the discharge path of the lamp.

Claims (10)

1. Beleuchtungsanordnung mit einer mit einem Lampenkolben versehenen Licht­quelle und mit einem der Lichtquelle zugeordneten Reflektor, wobei auf wenigstens einem Teil der Außenfläche des Lampenkolbens ein aus mehreren Schichten bestehendes Interferenzfilter aufgebracht ist, das eine hohe Durchlässigkeit für sichtbares Licht und ein hohes Reflexionsvermögen für Infrarotlicht aufweist, dadurch gekennzeichnet, daß sie Teil einer Operationsleuchte ist, daß der Lampenkolben (1) einen nur für sichtbares Licht durchlässigen und einen für Infrarotstrahlen durchlässigen Bereich aufweist, daß der für sichtbares Licht durchlässige Lampenkolbenbereich mit einem Interferenzfilter (3) versehen und und daß der für die Infrarotstrahlen durchlässige Lampenkolbenbereich (4, 5) solchen Bereichen des Reflektorsystems (11) benachbart ist, welche wenigstens in diesen Bereichen Infrarotlicht absorbierend oder transmittierend ausgebildet sind.1. Lighting arrangement with a light bulb provided with a lamp bulb and with a reflector assigned to the light source, wherein an interference filter consisting of several layers is applied to at least part of the outer surface of the lamp bulb, which has a high permeability for visible light and a high reflectivity for infrared light , characterized in that it is part of an operating light, that the lamp bulb (1) has a region which is only transparent to visible light and a region which is transparent to infrared rays, that the lamp bulb region which is transparent to visible light is provided with an interference filter (3) and and that for the lamp bulb region (4, 5) which is permeable to infrared rays is adjacent to those regions of the reflector system (11) which are designed to absorb or transmit infrared light at least in these regions. 2. Beleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Interferenzfilter aus mehreren Schichten mit alternierend hohen und niedrigen Brechungsindex besteht.2. Lighting arrangement according to claim 1, characterized in that the interference filter consists of several layers with alternating high and low refractive index. 3. Beleuchtungsanordnung nach Anspruch 2, dadurch gekennzeichnet, daß das Interferenzfilter (3) hauptsächlich aus Siliziumdioxid- und Tantalpent­oxidschichten besteht.3. Lighting arrangement according to claim 2, characterized in that the interference filter (3) consists mainly of silicon dioxide and tantalum pentoxide layers. 4. Beleuchtungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekenn­zeichnet, daß als Lichtquelle eine einseitig gesockelte Halogenglühlampe dient, deren Lampenkolben eine Glühwendel umhüllt, wobei die Glühwendel vom Interferenzfilter (3) umschlossen ist.4. Lighting arrangement according to one of claims 1 to 3, characterized in that serves as a light source, a capped halogen incandescent lamp, the lamp envelope envelops a filament, the filament being enclosed by the interference filter (3). 5. Beleuchtungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekenn­zeichnet, daß als Lichtquelle eine Entladungslampe dient, wobei die Entladungsstrecke vom Interferenzfilter umschlossen ist.5. Lighting arrangement according to one of claims 1 to 3, characterized in that a discharge lamp serves as the light source, the discharge path being enclosed by the interference filter. 6. Beleuchtungsanordnung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Lampenkolben wenigstens im Lichtaustrittsbereich axialsymmetrisch aus­gebildet ist.6. Lighting arrangement according to claim 4 or 5, characterized in that the lamp bulb is at least axially symmetrical in the light exit region. 7. Beleuchtungsanordnung nach Anspruch 6, dadurch gekennzeichnet, daß das Interferenzfilter (3) auf einem wenigstens im Lichtaustrittsbereich zylindrisch ausgebildeten Lampenkolben (1) in Form eines Zylindermantels aufgebracht ist.7. Lighting arrangement according to claim 6, characterized in that the interference filter (3) on a cylindrical at least in the light exit area lamp bulb (1) is applied in the form of a cylinder jacket. 8. Beleuchtungsanordnung nach Anspruch 6, dadurch gekennzeichnet, daß das Interferenzfilter auf einem wenigstens teilweise kugelförmig ausgebildeten Lampenkolben in Form einer zylindrisch durchbohrten Kugelhülle aufgebracht ist.8. Lighting arrangement according to claim 6, characterized in that the interference filter is applied to an at least partially spherical lamp bulb in the form of a cylindrically pierced spherical envelope. 9. Beleuchtungsanordnung nach Anspruch 6, dadurch gekennzeichnet, daß das Interferenzfilter auf einem wenigstens teilweise ellipsoidförmigen Lampen­kolben in Form einer zylindrisch durchbohrten Ellipsoidhülle aufgebracht ist.9. Lighting arrangement according to claim 6, characterized in that the interference filter is applied to an at least partially ellipsoidal lamp bulb in the form of a cylindrically pierced ellipsoidal envelope. 10. Beleuchtungsanordnung nach einem oder mehreren der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß der Infrarotlicht absorbierende oder transmit­tierende Bereich des Reflektors von der Achse des Lampenkolbens geschnit­ten wird.10. Lighting arrangement according to one or more of claims 6 to 9, characterized in that the infrared light absorbing or transmitting region of the reflector is cut from the axis of the lamp bulb.
EP88118811A 1988-04-29 1988-11-11 Lighting fixture with halogen lamp Expired - Lifetime EP0339130B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8817192U DE8817192U1 (en) 1988-04-29 1988-11-11 Lighting arrangement with halogen light bulb

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3814539A DE3814539A1 (en) 1988-04-29 1988-04-29 LIGHTING ARRANGEMENT WITH HALOGEN BULB
DE3814539 1988-04-29

Publications (3)

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EP0339130A2 true EP0339130A2 (en) 1989-11-02
EP0339130A3 EP0339130A3 (en) 1990-05-16
EP0339130B1 EP0339130B1 (en) 1995-04-12

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EP88118811A Expired - Lifetime EP0339130B1 (en) 1988-04-29 1988-11-11 Lighting fixture with halogen lamp

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US (1) US4937714A (en)
EP (1) EP0339130B1 (en)
JP (1) JPH0244604A (en)
DE (2) DE3814539A1 (en)

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EP0460913A3 (en) * 1990-06-04 1992-08-26 Toshiba Lighting & Technology Corporation A lighting unit having a lamp and a reflector
EP0470496A3 (en) * 1990-08-07 1992-08-26 Toshiba Lighting & Technology Corporation Incandescent lamp and reflector type projection lamp
FR2713825A1 (en) * 1993-12-10 1995-06-16 Gen Electric Light source with an optical interference filter, method for forming such a filter and lighting system provided with such a light source.
EP0702396A3 (en) * 1994-09-13 1997-01-29 Osram Sylvania Inc High efficiency vehicle headlights and reflector lamps
EP0883889A4 (en) * 1996-02-27 1999-03-24 Tailored Lighting Inc Novel daylight lamp
WO1999046546A1 (en) * 1998-03-11 1999-09-16 Michael Bisges Cold light-uv-radiation device
WO2009121554A1 (en) * 2008-03-31 2009-10-08 Osram Gesellschaft mit beschränkter Haftung Illumination device

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EP0460913A3 (en) * 1990-06-04 1992-08-26 Toshiba Lighting & Technology Corporation A lighting unit having a lamp and a reflector
EP0470496A3 (en) * 1990-08-07 1992-08-26 Toshiba Lighting & Technology Corporation Incandescent lamp and reflector type projection lamp
FR2713825A1 (en) * 1993-12-10 1995-06-16 Gen Electric Light source with an optical interference filter, method for forming such a filter and lighting system provided with such a light source.
EP0702396A3 (en) * 1994-09-13 1997-01-29 Osram Sylvania Inc High efficiency vehicle headlights and reflector lamps
EP0883889A4 (en) * 1996-02-27 1999-03-24 Tailored Lighting Inc Novel daylight lamp
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WO2009121554A1 (en) * 2008-03-31 2009-10-08 Osram Gesellschaft mit beschränkter Haftung Illumination device

Also Published As

Publication number Publication date
DE3814539C2 (en) 1990-05-23
JPH0468721B2 (en) 1992-11-04
EP0339130A3 (en) 1990-05-16
DE3853583D1 (en) 1995-05-18
DE3814539A1 (en) 1989-11-09
US4937714A (en) 1990-06-26
EP0339130B1 (en) 1995-04-12
JPH0244604A (en) 1990-02-14

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