EP0765528A1 - Elektrische glühlampe und leuchtkörper für glühlampen - Google Patents
Elektrische glühlampe und leuchtkörper für glühlampenInfo
- Publication number
- EP0765528A1 EP0765528A1 EP95920744A EP95920744A EP0765528A1 EP 0765528 A1 EP0765528 A1 EP 0765528A1 EP 95920744 A EP95920744 A EP 95920744A EP 95920744 A EP95920744 A EP 95920744A EP 0765528 A1 EP0765528 A1 EP 0765528A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- luminous element
- bulb
- incandescent lamp
- filament
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
Definitions
- the invention relates to an electric incandescent lamp according to the preamble of claim 1 and to luminous elements which are suitable for incandescent lamps, in particular for incandescent lamps according to claim 1.
- This type of lamp is used both in general lighting and for special lighting purposes, in combination with a reflector, for example in projection technology.
- IR layer for short - The rotationally symmetrical shape of the lamp bulb in conjunction with a coating reflecting IR radiation applied to its inner and / or outer surface - hereinafter referred to as IR layer for short - causes a large part of the IR radiation power emitted by the luminous element to reflect back becomes.
- the resulting increase in lamp efficiency can be used on the one hand with constant electrical power consumption for a temperature increase in the filament and consequently an increase in the luminous flux.
- a given luminous flux can be achieved with a lower electrical power consumption - an advantageous “energy saving effect”.
- Another desirable effect is that due to the IR layer, significantly less IR radiation power is emitted through the lamp bulb and thus the surroundings are heated than in conventional ones Lightbulbs.
- the power density of the IR radiation components within the lamp bulb decreases with the number of reflections and consequently also the efficiency of the incandescent lamp. It is therefore crucial for the increase in efficiency that can actually be achieved to minimize the number of reflections required for returning the individual IR rays to the luminous element.
- Corresponding helixes can only be realized to a very limited extent due to the limited ductility of the tungsten wire that is generally used for this.
- a cube-shaped helix is proposed as a rough but practical approximation for a sphere.
- the helix has the largest diameter in its center. This gradually decreases towards the two ends of the helix.
- it is proposed to arrange a luminous element in each of the two focal points of the ellipsoid.
- EP-A 0 470 496 discloses a lamp with a spherical bulb, in the center of which a cylindrical luminous element is arranged. This document teaches that the loss of efficiency can be limited to an acceptable level by the deviation of the filament from the ideal spherical shape under the following conditions. Either the bulb diameter and filament diameter or length must be carefully coordinated within a tolerance range, or the diameter of the filament must be significantly smaller (small factor 0.05) than that of the lamp bulb. In addition, a lamp with an ellipsoidal bulb is specified, in the focal line of which an elongated luminous element is arranged axially.
- DE-OS 30 35 068 finally specifies a teaching for minimizing the aberration losses which are unavoidable even in the latter embodiment. Thereafter, the two focal points of the ellipsoidal lamp bulb lie on the axis of the cylindrical luminous element and at predetermined distances from its respective ends.
- the object of the invention is to eliminate the disadvantages mentioned and to provide an incandescent lamp which is characterized by efficient return of the emitted IR radiation to the luminous element and consequently high efficiency.
- compact lamp dimensions with high luminance levels should be made possible, as is sought in particular for low-voltage halogen incandescent lamps.
- this object is achieved by the characterizing features of claim 1. Further advantageous embodiments of the invention are explained in the dependent claims.
- Another object is to specify a particularly compact design of the filament, which is particularly, but not exclusively, suitable for lamps according to the invention. This object is achieved by luminous elements according to claims 15 to 18.
- the basic idea of the invention is based on shaping the rotationally symmetrical bulb wall in such a way that almost all IR rays which are generated on the lateral surface of a luminous element axially arranged inside the lamp bulb, with an essentially circular-cylindrical outer shape, after reflection on the bulb ⁇ wall back to the filament.
- the piston surface corresponds essentially to an ellipsoid-like barrel body and is generated by rotating an ellipse section which may only be approximate.
- the axis of rotation lies in the plane of the ellipse section and is displaced parallel to the large semiaxis by a distance.
- the two focal points of the ellipse section each describe an annular focal line.
- the distance corresponds approximately to the radius of the approximately circular-cylindrical envelope of the luminous element.
- the length of the filament corresponds approximately to the distance between the two focal lines or can also deviate slightly therefrom.
- Axially arranged single or double filaments made of tungsten are used as the luminous element.
- the filament is electrically conductively connected to two power supply lines, both of which are either gas-tight at one end of the lamp bulb or separately at the two opposite ends of the lamp bulb. leads are. Sealing is generally done through a pinch. However, another sealing technique is also possible, for example a plate melting.
- the version closed on one side is particularly suitable for low-voltage applications. In this case, very compact lamp dimensions can be achieved due to the relatively short illuminants.
- the filament can be fixed at both ends by a sufficiently rigid, axially arranged power supply.
- the largest possible part of the bulb wall can be used as an effective reflection surface.
- the lamp bulb has a lamp neck at one or, if appropriate, at both ends in the region of the current leadthrough.
- the lamp neck surrounds the current feedthrough as closely as possible and merges into a seal. So that the lamp can be inserted through the lamp neck into the lamp bulb during the manufacture of the lamp, the inner diameter z of the lamp neck must be at least at one end of the lamp bulb slightly larger than the outer diameter d of the lamp. Typical values for the difference between the two diameters are up to 5 mm, preferably less than 2 mm.
- the lamp according to the invention can be operated with good efficiency and compact dimensions as long as the The quotient d / D from the outer diameter d of the luminous element and the largest outer diameter D of the lamp bulb is greater than approximately 0.15 and is preferably in the range between greater than 0.15 and less than 0.5, and the quotient d / z is composed of outer diameter d of the filament and inner diameter z of the lamp neck is greater than 0.25, preferably greater than or equal to 0.4.
- the lamp bulb is shown as a closed elliptical barrel body 1 with a vanishing wall thickness, in its interior a luminous element 2 with a circular cylindrical outer contour is arranged centrally axially.
- the power supply lines and the pinch (s) are not shown for simplification.
- the longitudinal axis r of the luminous element 2 forms the axis of rotation of the barrel element 1.
- the part of the barrel element which is directly adjacent to the lateral surface of the luminous element is generated by an ellipse half 3.
- the four corner points of the rectangular longitudinal section of the luminous element are identical to the focal points J , 2 , J ', F 2 ' of the two opposite ellipse halves 3, 3 'of the bulb partial contour. Due to the rotational symmetry, the two focal points of the generating ellipse half describe two corresponding circular focal lines f, or / 2 , which coincide with the two circular edges of the outer contour of the circular-cylindrical luminous element. The maximum distance between the outer surface of the luminous element and the bulb wall thus corresponds to the small semiaxis b of the ellipse half generating the partial bulb contour.
- the contours of the lamp bulb and the luminous body each correspond to concentric circles. Approximately circular waves are therefore formed in these planes, the wave fronts of which are adapted to the corresponding piston contour and are consequently reflected back undisturbed.
- Diameter d is essentially calculated from the intended electrical
- the IR layer is applied to the inner surface of the lamp bulb.
- this inner surface is approximately shaped to an optimal reflection surface for the IR rays emanating from the outer surface of the luminous element.
- the shape of the inner surface cannot generally be controlled as precisely as is possible with the outer surface, for example by means of appropriate form rollers.
- the IR layer generally does not have the calculated contour exactly.
- the material of the coating must also be resistant to the filling.
- the IR layer is located on the outer surface of the lamp bulb, so that no consideration needs to be given to the filling.
- the IR layer can be applied in a simple manner.
- the IR rays emanating from the outer surface of the luminous element are now refracted at the interface between the medium inside the lamp bulb and that of the lamp bulb wall.
- the beam offset caused thereby means that - depending on the wall thickness and the difference in refractive index at the interface - some beams, in particular those originating from the focal points, are no longer reflected back into the focal line.
- the generator in this case is a slightly modified ellipse section (not shown) that has to be calculated numerically.
- the inner diameter of the lamp neck is only insignificantly larger than the outer diameter of the luminous element. For this reason, the lamp bulb, particularly if it is closed by a pinch seal that is relatively wide due to the foil passage, has a pronounced constriction in the area of the lamp neck.
- a particularly compact design of the power supply lines and the filament was developed.
- the current leads from the seal to the ends of the filament are guided within the outer diameter of the filament.
- the power supply connected to the end of the luminous element remote from the seal is returned within the luminous element, preferably centrally axially. In this way, shading of the coil surface is avoided.
- a particularly compact arrangement is a double helical spiral structure.
- the filament consists of two spatially interlocking filament sections. In one embodiment, the two spiral sections are implemented as identical helical lines.
- both filament sections are connected to one another.
- both filament sections merge into a power supply.
- compact filament shapes can be used not only in barrel bodies but also in other bulb shapes, for example in ellipsoidal or spherical bulbs, as were cited at the beginning.
- the pitch of the filament of the filament is advantageously as small as possible so that the IR rays reflected from the lamp bulb are highly likely to strike the filament.
- Such a compact design of the filament can be achieved particularly easily with LV lamps, since the thickness of the filament wire is particularly large. In this way, in accordance with the embodiments described above, short luminous bodies with high rigidity can be produced.
- the compact geometric dimensions predestine this lamp in particular for a combination with an external reflector, as is used, for example, in projection technology.
- the optical system efficiency is higher the closer the light source used is to an ideal point light source.
- At least one of the two current leads of the luminous element is spread in the direction of its end remote from the luminous element to a distance greater than the inner diameter z of the lamp neck.
- the spreading takes place over the entire length or only over a partial area of the respective power supply.
- Both current leads preferably have the same spread, symmetrical to the longitudinal axis of the luminous element.
- the lamp bulb is usually filled with inert gas, for example with N 2 , Xe, Ar and / or Kr.
- inert gas for example with N 2 , Xe, Ar and / or Kr.
- halogen additives which maintain a tungsten-halogen cycle in order to counteract blackening of the bulb.
- the lamp bulb consists of a translucent material, for example quartz glass.
- the lamp can be operated with an outer bulb. If a particularly strong reduction in the IR power emitted into the environment is desired, this can also have an IR layer.
- the IR layer can be designed, for example, as an interference filter known per se - usually a sequence of alternating dielectric layers of different refractive indices.
- the basic structure of suitable IR layers is e.g. explained in EP-A 0 470 496.
- Show it 1 shows the basic principle of the invention on the basis of a longitudinal section through an ellipsoidal barrel body
- FIG. 2 shows an exemplary embodiment of an NV lamp with an outer coating that is squeezed on one side
- Fig. 3 shows an embodiment of a one-sided pinched invention
- Fig. 4 shows an embodiment of a one-sided pinched invention
- Fig. 5 shows an embodiment of a two-sided pinched invention
- FIG. 4 A first exemplary embodiment of a lamp 4 according to the invention is shown schematically in FIG.
- This is a 'halogen incandescent lamp with a nominal voltage of 12 V and a nominal power of 75 W. It consists of a lamp bulb 5 which is squeezed on one side and which is shaped as an ellipsoidal barrel body. It is made of quartz glass with a wall thickness of approximately 1 mm and merges at its first end into a neck 9 which ends in a pinch seal 6. It has a pump tip 7 at its opposite end.
- An IR layer 8 is applied to its outer surface, consisting of an interference filter with more than 20 layers of Ta2Ü5 and SiO2.
- the ⁇ sen outer surface the calculated contour of the ellipsoidal barrel body is impressed.
- the largest outer diameter of the lamp bulb 5 is approximately 10 mm and the length of the lamp neck 9 is approximately 3 mm with an outer diameter of approximately 6 mm.
- Inside the lamp bulb there is a filling of approx. 6670 hPa xenon (Xe) with an admixture of 5600 ppm hydrogen bromide (HBr) and an axially arranged luminous element 2 'with a length of 3.7 mm and an outer diameter of 2.2 mm.
- the luminous element 2 ' is made of tungsten wire with a diameter of 227 ⁇ m and a length of 94 mm, its electrical resistance at room temperature being approximately 0.09 ⁇ .
- the tungsten wire is wound into a simple helix which has 11 turns with a pitch of 316 ⁇ m and a core diameter of 1746 ⁇ m, corresponding to a pitch factor of approximately 1.39 and a core factor of approximately 7.7.
- the power supply lines 10a, b are formed directly by the spiral wire and connected to molybdenum foils 11a, b in the pinch seal 6.
- the molybdenum foils 11a, b are in turn connected to outer socket pins 12a, b.
- the first power supply line 10a is guided parallel to the longitudinal axis of the lamp and in alignment with the outer surface of the luminous element 2 '.
- the second current supply 10b of the luminous element 2' is bent towards the axis and runs centrally along the axis of the turns to the end remote from the base. This prevents any foreclosure.
- the lamp has a color temperature of approx. 3150 K.
- the luminous flux is 2100 Im, which corresponds to a luminous efficacy of 28.7 ImAV. Compared to operating the same lamp without an IR layer, up to 25% of the electrical energy can be saved.
- FIG. 3 shows a second embodiment of a lamp 4 'according to the invention in a schematic representation.
- the IR layer 8 ' is located on the inside of the lamp bulb 5.
- the IR rays therefore strike the IR layer directly, without the wall of the lamp bulb 5 beforehand to happen.
- the axially centrally arranged single-coiled filament 13 is shaped like a double helix directly from a 227 ⁇ m thick tungsten wire.
- One half of the coil of the coil body is guided in the manner of a right-hand screw in the direction of the pump tip 7.
- the second half is turned in the same direction, but in the opposite direction.
- the two power supply lines 10a, 10b are formed directly by the ends of the helical wire. They are arranged in the plane of the pinch seal 6 and are guided parallel to one another — approximately at the distance from the diameter of the coil — from the end of the luminous element near the base to the molybdenum foils 11a, b connected with base pins 12a, b.
- Xe 6670 hPa xenon
- HBr hydrogen bromide
- FIG. 4 A further exemplary embodiment of a lamp 4 ′′ according to the invention is shown schematically in FIG. 4. It is a HV halogen incandescent lamp squeezed on one side with an outer coating 8, which is suitable for direct operation at a mains voltage of 230 V.
- the double-coiled lamp Luminous body 14 consists of 18 helical turns. These are wound on an electrically insulating tube 15 made of Al2 ⁇ 3 ⁇ ceramic, which ensures good mechanical and thermal stability. This is of great importance for optimum efficiency of this lamp 4 ", since this is the only way
- the lateral surface of the luminous element 14 can be fixed with the required accuracy between the two focal lines of the lamp bulb 16. This applies in particular when the lamp 4 "is operated horizontally.
- the tube .15 prevents the long and less rigid lamp body 14 from bending.
- the end of the lamp body 14 remote from the seal is electrically conductive via a tungsten bracket 171 with the internal return 17
- the luminous element 14 is axially centered by the support of the inner return 17 in the pump tip 18. Further details on this type of holding of a luminous element can be found in DE-GM 91 15 714.
- FIG. 5 A further exemplary embodiment of a lamp 4 ′ ′′ according to the invention is shown schematically in FIG. 5. It is a two-sided squeezed HV halogen incandescent lamp with an outer coating 8, which is suitable for direct operation at a mains voltage of 120 V.
- Lamp bulb 19 has a simply turned filament 20 arranged concentrically, the last turn at both ends of filament 20 being approximately identical to the focal lines of lamp bulb 19, as in the previous examples
- Power supply lines 22a, 22b are held between the lamp bulb 19 and the two pinches 21a, 21b, the lamp 4 '"each has a lamp neck 23a or 23b.
- the inside diameter of the first lamp neck 23a is only insignificantly larger than the outside diameter of the lamp body 20.
- the lamp body 20 is inserted into the lamp bulb 19 through this lamp neck 23a.
- the inside diameter of the lamp neck 23b arranged opposite is only insignificantly larger than the diameter of the power supply line 22b which is closely surrounded by it.
- the Lamp 4 '" has a larger reflective surface at this end than at its opposite end.
- the lamp is preferably oriented such that the lamp end with the narrower lamp neck 23b points downward. In this way, a temperature gradient caused by convection is created counteracted between the two lamp ends.
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Resistance Heating (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4420607 | 1994-06-13 | ||
DE4420607A DE4420607A1 (de) | 1994-06-13 | 1994-06-13 | Elektrische Glühlampe und Leuchtkörper für Glühlampen |
PCT/DE1995/000718 WO1995034910A1 (de) | 1994-06-13 | 1995-06-01 | Elektrische glühlampe und leuchtkörper für glühlampen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0765528A1 true EP0765528A1 (de) | 1997-04-02 |
EP0765528B1 EP0765528B1 (de) | 1999-09-08 |
Family
ID=6520462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920744A Expired - Lifetime EP0765528B1 (de) | 1994-06-13 | 1995-06-01 | Elektrische glühlampe und leuchtkörper für glühlampen |
Country Status (10)
Country | Link |
---|---|
US (1) | US5811934A (de) |
EP (1) | EP0765528B1 (de) |
JP (1) | JP3886529B2 (de) |
CN (1) | CN1068455C (de) |
CA (1) | CA2192087C (de) |
DE (2) | DE4420607A1 (de) |
ES (1) | ES2137517T3 (de) |
HU (1) | HU218060B (de) |
TW (1) | TW446990B (de) |
WO (1) | WO1995034910A1 (de) |
Cited By (2)
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EP1453078A3 (de) * | 2003-02-25 | 2006-11-22 | Matsushita Electric Industrial Co., Ltd. | Halogenlampe mit einer infrarot-reflektierenden Beschichtung und damit versehene Reflektorlampe |
DE202007017598U1 (de) | 2007-12-18 | 2008-07-31 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe mit IRC-Beschichtung |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19701794A1 (de) * | 1997-01-20 | 1998-07-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Glühlampe mit Reflexionsschicht |
DE19701792A1 (de) * | 1997-01-20 | 1998-07-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Glühlampe mit Reflexionsschicht |
DE19844519C2 (de) | 1998-09-28 | 2000-08-03 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrische Glühlampe mit IR-Reflexionsschicht |
DE10001007A1 (de) * | 2000-01-12 | 2001-07-19 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Leuchtkörper für eine Glühlampe |
US6611102B2 (en) * | 2000-03-10 | 2003-08-26 | Matsushita Electric Industrial Co., Ltd. | Tungsten-halogen light bulb, and reflector lamp using the same |
DE10040253A1 (de) * | 2000-08-14 | 2002-02-28 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Kompakte Hochvolt-Glühlampe |
US20030057812A1 (en) * | 2001-08-31 | 2003-03-27 | Guy James K. | Double ellipsoid light bulb using total internal reflection |
US6936968B2 (en) * | 2001-11-30 | 2005-08-30 | Mule Lighting, Inc. | Retrofit light emitting diode tube |
DE10236549A1 (de) | 2002-08-08 | 2004-03-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektrische Glühlampe |
US20070189001A1 (en) * | 2002-12-11 | 2007-08-16 | Safeexits, Inc. | Multi-functional ballast and location-specific lighting |
US20080197790A1 (en) * | 2002-12-11 | 2008-08-21 | Mangiaracina Anthony A | Lighting utilizing power over the ethernet |
CN1973353A (zh) * | 2003-03-20 | 2007-05-30 | 皇家飞利浦电子股份有限公司 | 带有红外反射层的白炽电灯 |
DE10318051A1 (de) * | 2003-04-17 | 2004-11-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogenglühlampe |
DE102004014211A1 (de) * | 2004-03-23 | 2005-10-13 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühlampe mit carbidhaltigem Leuchtkörper |
DE102004023935A1 (de) * | 2004-05-12 | 2005-12-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühwendel für eine Glühlampe und Glühlampe |
DE102004034786A1 (de) * | 2004-07-19 | 2006-03-16 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühlampe mit carbidhaltigem Leuchtkörper |
DE102004043176B4 (de) * | 2004-09-03 | 2014-09-25 | Osram Gmbh | Infrarotscheinwerfer |
KR100767851B1 (ko) * | 2005-07-14 | 2007-10-18 | 엘지전자 주식회사 | 발열체의 구조 |
DE102005048444A1 (de) * | 2005-10-07 | 2007-04-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Scheinwerferlampe |
WO2008050253A2 (en) * | 2006-10-24 | 2008-05-02 | Philips Intellectual Property & Standards Gmbh | Electric incandescent lamp with filament array and infrared reflective coating |
US8278823B2 (en) * | 2007-03-30 | 2012-10-02 | General Electric Company | Thermo-optically functional compositions, systems and methods of making |
US20080237500A1 (en) * | 2007-03-30 | 2008-10-02 | General Electric Company | Thermo-optically functional compositions, systems and methods of making |
US20080237541A1 (en) * | 2007-03-30 | 2008-10-02 | General Electric Company | Thermo-optically functional compositions, systems and methods of making |
US20080266849A1 (en) * | 2007-04-30 | 2008-10-30 | Nielson Lyman O | Fluorescent lighting conversion to led lighting using a power converter |
DE102008032167A1 (de) | 2008-07-08 | 2010-01-14 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe |
DE202008009152U1 (de) | 2008-07-08 | 2008-09-11 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe |
CN104205626A (zh) * | 2012-04-25 | 2014-12-10 | 惠普发展公司,有限责任合伙企业 | 具有可编程输入阻抗的开路增益互阻抗放大器 |
CN107917350A (zh) * | 2017-11-09 | 2018-04-17 | 安徽世林照明股份有限公司 | 一种螺旋式灯丝的led灯珠及其灯丝缠绕连接方法 |
DE102020118732A1 (de) | 2020-07-15 | 2022-01-20 | Awas Ag | Vorrichtung zur Erzeugung von elektromagnetischer Strahlung sowie System mit einer derartigen Vorrichtung |
CN114081259A (zh) * | 2021-09-30 | 2022-02-25 | 深圳汝原科技有限公司 | 红外光源、辐射源和干燥装置 |
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- 1994-06-13 DE DE4420607A patent/DE4420607A1/de not_active Withdrawn
-
1995
- 1995-06-01 US US08/737,873 patent/US5811934A/en not_active Expired - Lifetime
- 1995-06-01 WO PCT/DE1995/000718 patent/WO1995034910A1/de active IP Right Grant
- 1995-06-01 CN CN95193587A patent/CN1068455C/zh not_active Expired - Lifetime
- 1995-06-01 HU HU9603431A patent/HU218060B/hu not_active IP Right Cessation
- 1995-06-01 EP EP95920744A patent/EP0765528B1/de not_active Expired - Lifetime
- 1995-06-01 ES ES95920744T patent/ES2137517T3/es not_active Expired - Lifetime
- 1995-06-01 DE DE59506803T patent/DE59506803D1/de not_active Expired - Lifetime
- 1995-06-01 JP JP50144996A patent/JP3886529B2/ja not_active Expired - Fee Related
- 1995-06-01 CA CA002192087A patent/CA2192087C/en not_active Expired - Fee Related
- 1995-06-07 TW TW084105728A patent/TW446990B/zh not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1453078A3 (de) * | 2003-02-25 | 2006-11-22 | Matsushita Electric Industrial Co., Ltd. | Halogenlampe mit einer infrarot-reflektierenden Beschichtung und damit versehene Reflektorlampe |
DE202007017598U1 (de) | 2007-12-18 | 2008-07-31 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe mit IRC-Beschichtung |
DE212008000065U1 (de) | 2007-12-18 | 2010-06-10 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe mit IRC-Beschichtung |
Also Published As
Publication number | Publication date |
---|---|
ES2137517T3 (es) | 1999-12-16 |
CA2192087C (en) | 2003-04-08 |
JPH10501368A (ja) | 1998-02-03 |
CN1150863A (zh) | 1997-05-28 |
JP3886529B2 (ja) | 2007-02-28 |
CN1068455C (zh) | 2001-07-11 |
HU218060B (hu) | 2000-05-28 |
EP0765528B1 (de) | 1999-09-08 |
US5811934A (en) | 1998-09-22 |
CA2192087A1 (en) | 1995-12-21 |
WO1995034910A1 (de) | 1995-12-21 |
DE4420607A1 (de) | 1995-12-14 |
DE59506803D1 (de) | 1999-10-14 |
TW446990B (en) | 2001-07-21 |
HUT75819A (en) | 1997-05-28 |
HU9603431D0 (en) | 1997-02-28 |
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