EP0495194A2 - Reflector lamp - Google Patents

Reflector lamp Download PDF

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Publication number
EP0495194A2
EP0495194A2 EP91120911A EP91120911A EP0495194A2 EP 0495194 A2 EP0495194 A2 EP 0495194A2 EP 91120911 A EP91120911 A EP 91120911A EP 91120911 A EP91120911 A EP 91120911A EP 0495194 A2 EP0495194 A2 EP 0495194A2
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EP
European Patent Office
Prior art keywords
reflector
lamp
cold light
glass dome
glass
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.)
Granted
Application number
EP91120911A
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German (de)
French (fr)
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EP0495194A3 (en
EP0495194B1 (en
Inventor
Dietmar Schneider
Alex Asbach
Udo Custodis
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP0495194A2 publication Critical patent/EP0495194A2/en
Publication of EP0495194A3 publication Critical patent/EP0495194A3/en
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Publication of EP0495194B1 publication Critical patent/EP0495194B1/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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors

Definitions

  • the invention relates to a reflector lamp according to the preamble of claims 1 or 2.
  • Such lamps are known for example from EP-PS 0068 428.
  • Reflector lamps with a cold light reflector are mainly used to illuminate heat-sensitive objects. Recently, however, they have also become increasingly important in the illumination of living spaces and are also often used for decorative purposes. As a light source, these reflector lamps generally have a low-voltage halogen incandescent lamp with an electrical power consumption of between 20 watts and 100 watts.
  • the cold light reflector mainly consists of an ellipsoidal or paraboloidal glass dome made of pressed glass, which has a multi-layer optical interference filter on the inside, which has a high degree of transmission for infrared radiation and a high degree of reflection in the visible spectral range.
  • the infrared transmission of the reflector should not be impaired if possible.
  • the reflector lamp must be suitable for cost-effective series production.
  • the light transmitted by the reflector wall is strongly scattered, so that the luminance is reduced.
  • the contours of the recessed lamp are therefore through the reflector wall no longer recognizable through it.
  • the reflector wall appears uniformly bright to the viewer and there is no glare.
  • cold light reflectors according to the invention which essentially reflect only one light color and are transparent to other spectral ranges, it has been shown that the light transmitted and scattered by the reflector wall makes the reflector wall appear complementary to the reflected light. This color effect does not come into play with conventional reflector lamps due to the high luminance of the built-in lamp.
  • the invention thus opens up completely new perspectives in effect lighting.
  • the light exit opening is covered by a translucent pane.
  • Low-voltage halogen incandescent lamps which are relatively small and economical, are preferably used as the light source for the reflector lamp.
  • a first embodiment of a reflector lamp with a cold light reflector 1 is shown.
  • the cold light reflector 1 consists of an ellipsoidal glass dome 3 with an integrally formed reflector neck 7.
  • An interference filter 4 is applied to the inside of the glass dome 3, which mainly reflects yellow light and is transparent to other spectral ranges and to IR radiation.
  • the outside 5 of the glass dome 3 and the reflector neck 7 are matted by means of sandblasting, also possible by means of chemical etching using hydrofluoric acid.
  • a 12 volt halogen incandescent lamp 2 with an electrical power consumption of approximately 50 watts serves as the light source and is fixed in the reflector neck 7 with the aid of putty 8.
  • the light exit opening of the cold light reflector 1 has a diameter of approximately 51 mm and is covered by a transparent glass pane 6.
  • the length of the reflector lamp in the direction of the optical axis, measured from the light exit opening to the ends of the contact pins 9, is approximately 45 mm.
  • yellow light leaves the reflector 1 through the cover plate 6, while the light transmitted and scattered by the frosted glass dome 3 makes the outside 5 of the reflector appear uniformly violet in the complementary color.
  • the contours of the light source cannot be seen through the reflector wall and the viewer is not dazzled by the high luminance of the halogen incandescent lamp 2.
  • the invention is not limited to reflector lamps whose interference filter 4 selectively reflects yellow light, but can also be applied to reflector lamps whose interference filter 4 selectively reflects another light color or which has a high degree of reflection in the entire visible spectral range.
  • a description of the interference filter 4 is omitted here, since they are sufficiently known from the relevant specialist literature. It should only be mentioned at this point that the interference filters 4 of the exemplary embodiments consist of alternating SiO2 and ZnS layers. Other Materials for the interference filter 4 are also possible.
  • the glass dome 3 of the reflector lamp is made of milky white opaque glass, which is made up of chemical additives, e.g. CaF2 or NaF receives its strong light-scattering effect.
  • the outside 5 of the glass dome 3 is not matted in this embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Filters (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The invention relates to a reflector lamp having a cold light reflector (1) and a tungsten-halogen lamp (2). The reflector body (3) consists of glass and has an external mat finish in order to avoid a glare effect due to the high luminous density of the light source (2). It is possible to eliminate an external mat finish if the reflector body (3) consists of opaque glass. <IMAGE>

Description

Die Erfindung betrifft eine Reflektorlampe gemäß dem Oberbegriff der Schutzansprüche 1 oder 2.The invention relates to a reflector lamp according to the preamble of claims 1 or 2.

Derartige Lampen sind beispielsweise aus der EP-PS 0068 428 bekannt. Reflektorlampen mit einem Kaltlichtreflektor werden vorwiegend zur Beleuchtung wärmeempfindlicher Objekte eingesetzt. Neuerdings erlangen sie aber auch eine zunehmende Bedeutung bei der Ausleuchtung von Wohnräumen und werden auch häufig für dekorative Zwecke verwendet. Diese Reflektorlampen besitzen als Lichtquelle in der Regel eine Niedervolt-Halogenglühlampe mit einer elektrischen Leistungsaufnahme zwischen 20 Watt und 100 Watt. Der Kaltlichtreflektor besteht vorwiegend aus einer ellipsoid- oder paraboloidförmigen Glaskalotte aus Preßglas, die auf ihrer Innenseite ein vielschichtiges optisches Interferenzfilter aufweist, das für Infrarotstrahlung einen hohen Transmissionsgrad und im sichtbaren Spektralbereich einen hohen Reflexionsgrad besitzt.Such lamps are known for example from EP-PS 0068 428. Reflector lamps with a cold light reflector are mainly used to illuminate heat-sensitive objects. Recently, however, they have also become increasingly important in the illumination of living spaces and are also often used for decorative purposes. As a light source, these reflector lamps generally have a low-voltage halogen incandescent lamp with an electrical power consumption of between 20 watts and 100 watts. The cold light reflector mainly consists of an ellipsoidal or paraboloidal glass dome made of pressed glass, which has a multi-layer optical interference filter on the inside, which has a high degree of transmission for infrared radiation and a high degree of reflection in the visible spectral range.

Bei allen Kaltlichtreflektoren wird allerdings auch ein Teil des Lichtes durch die Reflektorwand transmittiert. Diese Transparenz der Reflektorwand und die hohe Leuchtdichte der Einbaulampe führen bei den herkömmlichen Reflektorlampen zu einer unangenehmen Blendung des Benutzers, da die Reflektorlampen fast ausschließlich in offenen Leuchten eingesetzt werden, so daß der Kaltlichtreflektor auch nach dem Einbau in die Leuchte vollständig sichtbar bleibt. Besonders stark tritt diese Blendung bei Kaltlichtreflektoren hervor, die im wesentlichen nur Licht einer Farbe reflektieren, und bei Verwendung von Niedervolt-Halogenglühlampen mit Leistungsaufnahmen von 50 Watt bis 100 Watt, die eine hohe Leuchtdichte aufweisen.With all cold light reflectors, however, part of the light is also transmitted through the reflector wall. This transparency of the reflector wall and the high luminance of the built-in lamp lead to an unpleasant glare for the user in the conventional reflector lamps, since the reflector lamps are used almost exclusively in open lamps, so that the cold light reflector remains completely visible even after installation in the lamp. This glare is particularly pronounced in cold light reflectors, which essentially only reflect light of one color, and when using low-voltage halogen incandescent lamps with power consumption from 50 watts to 100 watts, which have a high luminance.

Es ist die Aufgabe der Erfindung, eine Reflektorlampe mit einem Kaltlichtreflektor bereitzustellen, bei der die hohe Leuchtdichte des durch die Reflektorwand transmittierten Lichtes so weit reduziert ist, daß keine Blendung des Benutzers auftritt. Außerdem soll die Infrarotdurchlässigkeit des Reflektors möglichst nicht beeinträchtigt werden. Ferner muß die Reflektorlampe für eine kostengünstige Serienproduktion geeignet sein.It is the object of the invention to provide a reflector lamp with a cold light reflector in which the high luminance of the light transmitted through the reflector wall is reduced to such an extent that there is no glare to the user. In addition, the infrared transmission of the reflector should not be impaired if possible. Furthermore, the reflector lamp must be suitable for cost-effective series production.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale der Schutzansprüche 1 oder 2 gelöst. Besonders vorteilhafte Ausführungen finden sich in den abhängigen Ansprüchen.This object is achieved by the characterizing features of claims 1 or 2. Particularly advantageous designs can be found in the dependent claims.

Durch die Außenmattierung der Glaskalotte bzw. durch die Verwendung von Opakglas bei der Herstellung der Glaskalotte für den Reflektor erfährt das von der Reflektorwand transmittierte Licht eine starke Streuung, so daß die Leuchtdichte verringert wird. Die Konturen der Einbaulampe sind deshalb durch die Reflektorwand hindurch nicht mehr erkennbar. Die Reflektorwand erscheint dem Betrachter gleichmäßig hell und eine Blendung erfolgt nicht. Bei erfindungsgemäßen Kaltlichtreflektoren, die im wesentlichen nur eine Lichtfarbe reflektieren und für andere Spektralbereiche transparent sind, hat sich gezeigt, daß das von der Reflektorwand transmittierte und gestreute Licht die Reflektorwand komplementärfarbig zum reflektierten Licht erscheinen läßt. Dieser Farbeffekt kommt bei herkömmlichen Reflektorlampen wegen der hohen Leuchtdichte der Einbaulampe nicht zur Geltung. Die Erfindung eröffnet damit völlig neue Perspektiven in der Effektbeleuchtung.Due to the outer matting of the glass dome or the use of opaque glass in the manufacture of the glass dome for the reflector, the light transmitted by the reflector wall is strongly scattered, so that the luminance is reduced. The contours of the recessed lamp are therefore through the reflector wall no longer recognizable through it. The reflector wall appears uniformly bright to the viewer and there is no glare. In cold light reflectors according to the invention, which essentially reflect only one light color and are transparent to other spectral ranges, it has been shown that the light transmitted and scattered by the reflector wall makes the reflector wall appear complementary to the reflected light. This color effect does not come into play with conventional reflector lamps due to the high luminance of the built-in lamp. The invention thus opens up completely new perspectives in effect lighting.

Um das Interferenzfilter und die Einbaulampe vor Staub und Beschädigungen zu schützen, ist die Lichtaustrittsöffnung von einer lichtdurchlässigen Scheibe abgedeckt. Als Lichtquelle für die Reflektorlampe werden vorzugsweise Niedervolt-Halogenglühlampen verwendet, die relativ klein und wirtschaftlich sind.In order to protect the interference filter and the built-in lamp from dust and damage, the light exit opening is covered by a translucent pane. Low-voltage halogen incandescent lamps, which are relatively small and economical, are preferably used as the light source for the reflector lamp.

Die Erfindung wird nun anhand mehrerer bevorzugter Auführungsbeispiele erläutert.The invention will now be explained on the basis of several preferred exemplary embodiments.

In der Figur ist ein erstes Ausführungsbeispiel einer Reflektorlampe mit einem Kaltlichtreflektor 1 dargestellt. Der Kaltlichtreflektor 1 besteht aus einer ellipsoidförmigen Glaskalotte 3 mit einem angeformten Reflektorhals 7. Auf die Innenseite der Glaskalotte 3 ist ein Interferenzfilter 4 aufgebracht, das vorwiegend gelbes Licht reflektiert und für andere Spektralbereiche sowie für IR-Strahlung transparent ist. Die Außenseite 5 der Glaskalotte 3 und des Reflektorhalses 7 sind mittels Sandstrahlung, möglich wäre auch mittels chemischen Ätzens durch Flußsäure, mattiert. Als Lichtquelle dient eine 12 Volt-Halogenglühlampe 2 mit einer elektrischen Leistungsaufnahme von ca. 50 Watt, die im Reflektorhals 7 mit Hilfe von Kitt 8 fixiert ist. Die Lichtaustrittsöffnung des Kaltlichtreflektors 1 besitzt einen Durchmesser von ca. 51 mm und wird von einer durchsichtigen Glasscheibe 6 abgedeckt. Die Länge der Reflektorlampe in Richtung der optischen Achse, gemessen von der Lichtaustrittsöffnung bis zu den Enden der Kontaktstifte 9 beträgt ungefähr 45 mm. Bei diesem Ausführungsbeispiel verläßt gelbes Licht den Reflektor 1 durch die Abdeckscheibe 6, während das durch die außenmattierte Glaskalotte 3 transmittierte und gestreute Licht die Außenseite 5 des Reflektors gleichmäßig in der Komplementärfarbe violett erscheinen läßt. Die Konturen der Lichtquelle sind durch die Reflektorwand hindurch nicht erkennbar und der Betrachter wird durch die hohe Leuchtdichte der Halogenglühlampe 2 nicht geblendet.In the figure, a first embodiment of a reflector lamp with a cold light reflector 1 is shown. The cold light reflector 1 consists of an ellipsoidal glass dome 3 with an integrally formed reflector neck 7. An interference filter 4 is applied to the inside of the glass dome 3, which mainly reflects yellow light and is transparent to other spectral ranges and to IR radiation. The outside 5 of the glass dome 3 and the reflector neck 7 are matted by means of sandblasting, also possible by means of chemical etching using hydrofluoric acid. A 12 volt halogen incandescent lamp 2 with an electrical power consumption of approximately 50 watts serves as the light source and is fixed in the reflector neck 7 with the aid of putty 8. The light exit opening of the cold light reflector 1 has a diameter of approximately 51 mm and is covered by a transparent glass pane 6. The length of the reflector lamp in the direction of the optical axis, measured from the light exit opening to the ends of the contact pins 9, is approximately 45 mm. In this embodiment, yellow light leaves the reflector 1 through the cover plate 6, while the light transmitted and scattered by the frosted glass dome 3 makes the outside 5 of the reflector appear uniformly violet in the complementary color. The contours of the light source cannot be seen through the reflector wall and the viewer is not dazzled by the high luminance of the halogen incandescent lamp 2.

Natürlich beschränkt sich die Erfindung nicht auf Reflektorlampen, deren Interferenzfilter 4 selektiv gelbes Licht reflektiert, sondern sie kann auch auf Reflektorlampen angewendet werden, deren Interferenzfilter 4 eine andere Lichtfarbe selektiv reflektiert oder das im ganzen sichtbaren Spektralbereich einen hohen Reflexionsgrad besitzt. Auf eine Beschreibung des Interferenzfilters 4 wird hier verzichtet, da sie aus der einschlägigen Fachliteratur hinlänglich bekannt sind. Es sei an dieser Stelle nur erwähnt, daß die Interferenzfilter 4 der Ausführungsbeispiele aus abwechselnden SiO₂- und ZnS-Schichten bestehen. Andere Materialien für die Interferenzfilter 4 sind ebenfalls möglich.Of course, the invention is not limited to reflector lamps whose interference filter 4 selectively reflects yellow light, but can also be applied to reflector lamps whose interference filter 4 selectively reflects another light color or which has a high degree of reflection in the entire visible spectral range. A description of the interference filter 4 is omitted here, since they are sufficiently known from the relevant specialist literature. It should only be mentioned at this point that the interference filters 4 of the exemplary embodiments consist of alternating SiO₂ and ZnS layers. Other Materials for the interference filter 4 are also possible.

Nach einem zweiten Ausführungsbeispiel besteht die Glaskalotte 3 der Reflektorlampe aus milchigweißen Opakglas, das durch chemische Zusätze von z.B. CaF₂ oder NaF seine starke lichtstreuende Wirkung erhält. Die Außenseite 5 der Glaskalotte 3 ist bei diesem Ausführungsbeispiel nicht mattiert. Dies sind die einzigen Unterschiede zum oben beschriebenen ersten Ausführungsbeispiel.According to a second embodiment, the glass dome 3 of the reflector lamp is made of milky white opaque glass, which is made up of chemical additives, e.g. CaF₂ or NaF receives its strong light-scattering effect. The outside 5 of the glass dome 3 is not matted in this embodiment. These are the only differences from the first embodiment described above.

Claims (6)

Reflektorlampe bestehend aus einem Kaltlichtreflektor (1) und einer elektrischen Lampe (2), die innerhalb des Kaltlichtreflektors (1) angeordnet ist, wobei der Kaltlichtreflektor (1) aus einer ellipsoid- oder paraboloidförmigen Glaskalotte (3) und aus einem Schichtsystem (4) optisch dünner Schichten mit unterschiedlichen Brechungsindizes besteht, die auf der Innenseite der Glaskalotte (3) angebracht sind und ein Interferenzfilter bilden, dadurch gekennzeichnet, daß die Glaskalotte (3) auf ihrer Außenseite (5) eine Mattierung aufweist.Reflector lamp consisting of a cold light reflector (1) and an electric lamp (2) which is arranged inside the cold light reflector (1), the cold light reflector (1) consisting of an ellipsoidal or paraboloidal glass dome (3) and a layer system (4) optically There are thin layers with different refractive indices, which are attached to the inside of the glass dome (3) and form an interference filter, characterized in that the glass dome (3) has a matting on its outside (5). Reflektorlampe bestehend aus einem Kaltlichtreflektor (1) und einer elektrischen Lampe (2), die innerhalb des Kaltlichtreflektors (1) angeordnet ist, wobei der Kaltlichtreflektor (1) aus einer ellipsoid- oder paraboloidförmigen Glaskalotte (3) und aus einem Schichtsystem (4) optisch dünner Schichten mit unterschiedlichen Brechungsindizes besteht, die auf der Innenseite der Glaskalotte (3) aufgebracht sind und ein Interferenzfilter bilden, dadurch gekennzeichnet, daß die Glaskalotte (3) aus Opakglas besteht.Reflector lamp consisting of a cold light reflector (1) and an electric lamp (2) which is arranged inside the cold light reflector (1), the cold light reflector (1) consisting of an ellipsoidal or paraboloidal glass dome (3) and a layer system (4) optically There are thin layers with different refractive indices, which are applied to the inside of the glass dome (3) and form an interference filter, characterized in that the glass dome (3) consists of opaque glass. Reflektorlampe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Kaltlichtreflektor (1) mit einem Interferenzfilter (4) ausgestattet, das vorzugsweise Licht einer Farbe, d.h., Licht aus einem engen Wellenlängenbereich, reflektiert, so daß die Reflektorwand in der Komplementärfarbe erscheint.Reflector lamp according to one of claims 1 or 2, characterized in that the cold light reflector (1) is equipped with an interference filter (4) which preferably reflects light of one color, ie light from a narrow wavelength range, so that the reflector wall appears in the complementary color . Reflektorlampe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Glaskalotte (3) facettiert ist.Reflector lamp according to one of claims 1 or 2, characterized in that the glass dome (3) is faceted. Reflektorlampe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die elektrische Lampe (2) eine Niedervolt-Halogenglühlampe ist.Reflector lamp according to one of claims 1 or 2, characterized in that the electric lamp (2) is a low-voltage halogen incandescent lamp. Reflektorlampe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Lichtaustrittsöffnung des Kaltlichtreflektors (1) von einer lichtdurchlässigen Scheibe (6) abgedeckt wird.Reflector lamp according to one of claims 1 or 2, characterized in that the light exit opening of the cold light reflector (1) is covered by a translucent pane (6).
EP91120911A 1990-12-18 1991-12-05 Reflector lamp Expired - Lifetime EP0495194B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9017071U 1990-12-18
DE9017071U DE9017071U1 (en) 1990-12-18 1990-12-18 Reflector lamp

Publications (3)

Publication Number Publication Date
EP0495194A2 true EP0495194A2 (en) 1992-07-22
EP0495194A3 EP0495194A3 (en) 1992-12-16
EP0495194B1 EP0495194B1 (en) 1995-06-07

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ID=6860396

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Application Number Title Priority Date Filing Date
EP91120911A Expired - Lifetime EP0495194B1 (en) 1990-12-18 1991-12-05 Reflector lamp

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EP (1) EP0495194B1 (en)
JP (1) JPH0744125U (en)
DE (2) DE9017071U1 (en)
ES (1) ES2072520T3 (en)
HU (1) HU212949B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780884A1 (en) 1995-12-22 1997-06-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lamp reflector unit
EP1755144A2 (en) 2005-04-19 2007-02-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Compact reflector lamp and manufacturing method thereof
EP1632986A3 (en) * 2004-07-08 2008-02-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen incandescent lamp
CN103185288A (en) * 2011-12-29 2013-07-03 海洋王照明科技股份有限公司 Lens and high-luminous-intensity runway guard light provided with lens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10318051A1 (en) 2003-04-17 2004-11-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH halogen bulb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068428A1 (en) * 1981-06-26 1983-01-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen lamp with an elliptical cold light reflector
DE8711328U1 (en) * 1987-08-20 1987-10-22 Maurer, Ingo, 8000 München Reflector lamp
GB2229264A (en) * 1989-03-16 1990-09-19 Toshiba Lighting & Technology Lighting fixture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5769847A (en) * 1980-10-17 1982-04-28 Olympus Optical Co Ultrasonic diagnostic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068428A1 (en) * 1981-06-26 1983-01-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen lamp with an elliptical cold light reflector
DE8711328U1 (en) * 1987-08-20 1987-10-22 Maurer, Ingo, 8000 München Reflector lamp
GB2229264A (en) * 1989-03-16 1990-09-19 Toshiba Lighting & Technology Lighting fixture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780884A1 (en) 1995-12-22 1997-06-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lamp reflector unit
EP1632986A3 (en) * 2004-07-08 2008-02-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen incandescent lamp
US7397192B2 (en) 2004-07-08 2008-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen incandescent lamp
EP1755144A2 (en) 2005-04-19 2007-02-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Compact reflector lamp and manufacturing method thereof
CN103185288A (en) * 2011-12-29 2013-07-03 海洋王照明科技股份有限公司 Lens and high-luminous-intensity runway guard light provided with lens

Also Published As

Publication number Publication date
HU913983D0 (en) 1992-03-30
JPH0744125U (en) 1995-10-31
EP0495194A3 (en) 1992-12-16
HUT66791A (en) 1994-12-28
ES2072520T3 (en) 1995-07-16
DE59105667D1 (en) 1995-07-13
EP0495194B1 (en) 1995-06-07
HU212949B (en) 1996-12-30
DE9017071U1 (en) 1991-03-07

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