EP1071114A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
EP1071114A1
EP1071114A1 EP99114339A EP99114339A EP1071114A1 EP 1071114 A1 EP1071114 A1 EP 1071114A1 EP 99114339 A EP99114339 A EP 99114339A EP 99114339 A EP99114339 A EP 99114339A EP 1071114 A1 EP1071114 A1 EP 1071114A1
Authority
EP
European Patent Office
Prior art keywords
filter
wall
lighting device
glass
radiation
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Withdrawn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
EP99114339A
Other languages
German (de)
English (en)
Inventor
Karl Pensl
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.)
Oshino Lamps Ltd
Original Assignee
Oshino Lamps Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oshino Lamps Ltd filed Critical Oshino Lamps Ltd
Priority to EP99114339A priority Critical patent/EP1071114A1/fr
Priority to JP2000208652A priority patent/JP2001076685A/ja
Publication of EP1071114A1 publication Critical patent/EP1071114A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/36—Seals between parts of vessel, e.g. between stem and envelope

Definitions

  • the invention relates to a lighting device according to the preamble of patent claim 1.
  • Conventional incandescent lamps which have an incandescent filament arranged in a glass bulb, For example, made of tungsten, can be inexpensive in mass production getting produced.
  • the problem with these incandescent lamps is that they do not prove to be Radiation sources are suitable for the IR radiation range.
  • the tungsten filaments emit radiation in the near IR range, but this radiation can
  • the glass bulb surrounding the filament does not pass because of the well-known glasses have pronounced absorption edges in the IR range.
  • IR incandescent lamps or diode lasers are therefore used as radiation sources in the IR range used.
  • the IR incandescent lamps usually include a filament or a Glow wire, which is held in a metal sleeve or in an open glass bulb.
  • the filament or filament are unprotected against external influences arranged, which causes an unstable light radiation in the IR range and the service life of the filament or filament is significantly reduced.
  • the one for the Diode lasers provided in the IR range emit an infrared laser beam and enable a comparatively stable and continuous light emission.
  • the manufacture of such diode lasers is complex, so that they are both high Acquisition costs as well as high maintenance costs cause.
  • a key concept of the invention is that for one on one end of the piston IR radiation permeable and heat-resistant filter is provided, at least extends in regions over the end face and in particular vacuum-tight on the wall of the bulb is arranged such that the IR range of the radiation generated through the filter can pass through the face of the piston. Due to the vacuum tight connection of the Filter with the wall of the bulb, the filament is positioned protected in the bulb and ensures stable light emission.
  • the heat-resistant filter can either extend in regions or completely over the end face of the piston. Especially the filter preferably forms the entire end face of the piston, so that a higher one Light radiation in the IR range is made possible via the filter.
  • the filter can be simple Way, for example by welding or fusing to the wall are, so that the lighting device according to the invention is inexpensive to manufacture.
  • the filter expediently has a coefficient of thermal expansion of approximately corresponds to the coefficient of thermal expansion of the wall. A vacuum tight Connection between the filter and the wall can thus be established.
  • the wall of the piston is preferably made of glass, in particular hard glass, such as Quartz glass, borosilicate glass or aluminum silicate glass.
  • Draw hard glasses are characterized by high mechanical stability and can be easily evacuated and with Noble gas to be filled. With this measure, the radiation power and on the other hand, the service life of the filament can be increased.
  • Crystals such as sapphire or ruby crystals are advantageously used as filters or glassy materials are used that have a radiation transmittance in the IR range exhibit.
  • the crystals, crystal or glass-like materials can be easily with the wall permanently connected, preferably fused or welded.
  • the above-mentioned crystals have one for connection with that Tempered glass existing wall suitable thermal expansion coefficient and draw is characterized by a low evaporation rate so that the gas atmosphere in the flask is not is affected.
  • the filter is advantageously as a lens, in particular as a converging or Fresnel lens formed so that the IR radiation passing through the filter focuses at the same time and a maximum radiation intensity is achieved.
  • the filter is arranged on the inside of the wall and firmly connected to the wall, in particular by welding or fusing.
  • the wall expediently has one for receiving the filter on the inside preferably all-round groove or edge groove.
  • the filter is through this constructive measure positioned sufficiently securely in the wall of the piston.
  • the main heat direction of the filter runs in this embodiment expediently in the axial direction or in the direction of the cylinder cylinder axis.
  • the filter can be positioned on an end edge area of the wall firmly connected to the edge region, in particular by welding or fusing his.
  • the main heat expansion direction of the filter can be in this embodiment run both in the axial direction and in the radial direction.
  • the filter can be connected either directly or via suitable connecting means, such as glass solder Wall connected.
  • suitable connecting means such as glass solder Wall connected. Glass solder is particularly suitable for different Thermal expansion of glass and other materials in a certain range compensate.
  • the radiation intensity of the incandescent filament or the like is preferably incandescent adjustable.
  • the filament or similar incandescent means are adjustable Voltage source connected so that the radiant power with respect to each Background radiation or background absorption can be calibrated.
  • the lighting device can particularly preferably be used to determine gas concentrations, especially for the determination of concentrations of toxic gases such as CO or nitrogen oxides, be used. Concentration determinations come as possible areas of application of exhaust gases in industrial plants or motor vehicles. The so obtained Information can be used for control and engine regulation. Another one The field of application is the determination of air quality and an associated economic Control of air conditioning systems in large buildings. Also in the field of security technology, especially in smoke detection, measurement of changes in Air composition and detection of toxic gases, for example in smoldering fires, use of the lighting device according to the invention is advantageous.
  • the Lighting device comprises a bulb 1, which is a substantially cylindrical or oval Wall 3 has.
  • the wall 3 is expediently made of tempered glass, for example Quartz glass, borosilicate glass or aluminum silicate glass.
  • a wire holder 10 On one of the The end of the piston 1 assigned to the power supply is a wire holder 10, for example a glass bead with the wall 3 by welding or fusing connected in a vacuum-tight manner and forms the bottom of the piston 1.
  • Power supply wires 9 are added, which are vacuum-tight with the wire holder 10 are connected and at their ends arranged in the bulb 1 a filament 2 or Hold such glow.
  • the power supply wires 9 advantageously have a high melting temperature and are made of metals such as molybdenum or Smelting alloys, such as Kovar®.
  • the filament 2 is preferably off Tungsten, platinum-rhodium or other metal with a high melting temperature and low evaporation rates.
  • the incandescent filament 2 is over the Power supply wires 9 connected to a controllable voltage source (not shown).
  • IR radiation permeable and heat-resistant filter 5 On one end face 4 opposite the power supply is one for the IR radiation permeable and heat-resistant filter 5 is arranged, which extends over the end face 4 and is connected in a vacuum-tight manner to the wall 3 of the piston 1.
  • filters prefers sapphire crystals, since these can be produced in large quantities and inexpensively have a coefficient of thermal expansion equal to the coefficient of thermal expansion corresponds to the wall 3 made of tempered glass.
  • Sapphire crystals are also characterized a low evaporation rate. Alternatively, other crystals or crystal or glassy materials can be used which have the properties mentioned above have.
  • the filter 5 is disc-shaped and on the inside 6 of the wall 3 arranged, the wall 3 for receiving the filter 5 on the inside 6 a may have circumferential, corresponding recess 7.
  • the filter 5 can directly or connected to the wall 3 via suitable connecting means, such as glass solder, or be fused. It is essential that the filter 5 is vacuum-tight with the wall 3 is connected so that the piston 1 is evacuated or with a suitable gas, such as noble gas, can be filled to allow a high annealing temperature and the To keep operating conditions for the filament 2 stable.
  • FIG. 2 shows a further, alternative embodiment of the lighting device.
  • the filter 5, as shown in FIG. 2 is on positioned an end edge region 8 of the wall 3 and with the edge region 8 of the Wall 3 fused.
  • the filter can be used directly or via connection means such as glass solder, be connected to the wall 3.
  • Fig. 3 shows a modification of the lighting device of Fig. 1.
  • the filter 5 is a lens, especially designed as a converging or Fresnel lens. The one emitted in the IR range Radiation can thus be focused at the same time. In a corresponding way, the filter 2 as a lens.
  • the filters 5 can be used as Scattering lenses can be formed if scattered radiation is desired.
  • the lighting device described above emits radiation as a continuum emitter entire visible range, in the near IR range and over the entire long-wave IR spectrum.
  • the near IR radiation can be used for detection and Concentration measurement of many gases, including toxic gases, are used, which results in a wide range of applications for the lighting device.
  • the lighting device can be manufactured inexpensively and has a high Lifespan, so that it is characterized by great economy.

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  • Investigating Or Analysing Materials By Optical Means (AREA)
EP99114339A 1999-07-21 1999-07-21 Dispositif d'éclairage Withdrawn EP1071114A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99114339A EP1071114A1 (fr) 1999-07-21 1999-07-21 Dispositif d'éclairage
JP2000208652A JP2001076685A (ja) 1999-07-21 2000-07-10 発光装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99114339A EP1071114A1 (fr) 1999-07-21 1999-07-21 Dispositif d'éclairage

Publications (1)

Publication Number Publication Date
EP1071114A1 true EP1071114A1 (fr) 2001-01-24

Family

ID=8238639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114339A Withdrawn EP1071114A1 (fr) 1999-07-21 1999-07-21 Dispositif d'éclairage

Country Status (2)

Country Link
EP (1) EP1071114A1 (fr)
JP (1) JP2001076685A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007052201A3 (fr) * 2005-11-03 2008-02-28 Koninkl Philips Electronics Nv Lampe electrique
CN117660914A (zh) * 2024-01-31 2024-03-08 山西贝创玻璃制品有限公司 一种红外线灯泡蒸铝镀膜装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013168332A1 (fr) 2012-05-09 2013-11-14 パナソニック株式会社 Elément de rayonnement d'infrarouges

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2325437A1 (de) * 1973-02-28 1974-09-05 Egyesuelt Izzolampa Infrarote lichtquelle hoher intensitaet
US5438233A (en) * 1991-11-27 1995-08-01 Bhk, Inc. Filament lamp infrared source
DE29715712U1 (de) * 1997-09-02 1997-11-06 Diether, Hartmut, 65451 Kelsterbach Infrarotstrahler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2325437A1 (de) * 1973-02-28 1974-09-05 Egyesuelt Izzolampa Infrarote lichtquelle hoher intensitaet
US5438233A (en) * 1991-11-27 1995-08-01 Bhk, Inc. Filament lamp infrared source
DE29715712U1 (de) * 1997-09-02 1997-11-06 Diether, Hartmut, 65451 Kelsterbach Infrarotstrahler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007052201A3 (fr) * 2005-11-03 2008-02-28 Koninkl Philips Electronics Nv Lampe electrique
CN117660914A (zh) * 2024-01-31 2024-03-08 山西贝创玻璃制品有限公司 一种红外线灯泡蒸铝镀膜装置
CN117660914B (zh) * 2024-01-31 2024-04-09 山西贝创玻璃制品有限公司 一种红外线灯泡蒸铝镀膜装置

Also Published As

Publication number Publication date
JP2001076685A (ja) 2001-03-23

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