WO2010086556A1 - Device for emitting pulsed infrared radiation - Google Patents
Device for emitting pulsed infrared radiation Download PDFInfo
- Publication number
- WO2010086556A1 WO2010086556A1 PCT/FR2010/050133 FR2010050133W WO2010086556A1 WO 2010086556 A1 WO2010086556 A1 WO 2010086556A1 FR 2010050133 W FR2010050133 W FR 2010050133W WO 2010086556 A1 WO2010086556 A1 WO 2010086556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- emitting
- infrared
- emission
- layer
- infrared radiation
- Prior art date
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 37
- 239000004065 semiconductor Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000001179 sorption measurement Methods 0.000 claims abstract description 7
- 230000003595 spectral effect Effects 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 10
- 229910044991 metal oxide Inorganic materials 0.000 claims description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 229920005591 polysilicon Polymers 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 239000010955 niobium Substances 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910001887 tin oxide Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(ii) oxide Chemical group [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000006399 behavior Effects 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- PBXQYZHLVXOZDR-UHFFFAOYSA-N [Cr].[Pt].[Ti] Chemical compound [Cr].[Pt].[Ti] PBXQYZHLVXOZDR-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
- G01N33/4972—Determining alcohol content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
Definitions
- the present invention relates to the general field of pulsed infrared radiation emitting devices, emitting reproducible pulses in the spectral range [9 ⁇ m; 10 .mu.m].
- Such an infrared emission is intended for use in instruments for measuring the absorption by ethanol of infrared located in the evoked interval.
- such measuring devices based on infrared absorption use a pyroelectric detector whose operation is only possible in combination with pulsed infrared emission.
- These devices then generally use a continuous source of infrared associated with a rotating element to periodically mask this source to generate a reproducible periodic alternating signal.
- Such a rotating element is commonly called "chopper".
- the use of such a rotating element involves the implementation of an engine capable of providing a constant and completely regular rotational movement, so as to ensure the reproducibility of infrared radiation pulses.
- the main purpose of the present invention is therefore to overcome the drawbacks of the prior art by proposing a device for emitting pulsed infrared radiation emitting reproducible pulses in the spectral range.
- an alcohol measuring apparatus comprising a measurement vessel in which absorption measurements are carried out, characterized in that it comprises at least one power supply module capable of supplying a reproducible pulsed current at a desired pulse frequency and an emission module consisting of a plane substrate on which is placed a heating element made of conductive material. said heating element being coated with a heat-diffusing layer on which is placed a thin layer of at least one semiconductor material, the heating element being fed with the pulsed current supplied by the 'food.
- the desired pulse frequency is between 3 and 10 Hz for the purposes of the transmitter / receiver combination.
- the modules comprise a heating element consisting of a conductive layer or a conductive filament acting as a heating resistor between a substrate and a thin layer of a semiconductor material.
- this semiconductor layer being isolated from the conductive layer by a heat diffusing layer, emit infrared radiation pulses quite reproducible in the target spectral range when the conductive layer is fed with a pulsed current at a desired pulse frequency.
- emission modules operating on the principle of the emission of a caloric radiation, generate isotropic radiation on the upper half-space of the emission module.
- a component having the constitution of a transmission module as defined in the invention is advantageously a semiconductor reducing gas sensor using a variation in the conductivity of the semiconductor material as a function of the adsorption of the gas on this material.
- such a component is diverted from the primary function for which it is designed.
- such a sensor undergoes a chemical reaction on the sensitive layer varying its electrical conductivity.
- This sensitive layer is heated at high temperature by the conductive filament.
- these components emit substantially isotropic infrared radiation in a half space generating a loss of energy in the case where a channeling of the energy is desired.
- the emission module is provided with an emitter cone whose surface reflects the infrared and whose angular aperture allows an increased transmission of the infrared energy in a tubular measuring vessel in which is measured the infrared absorption and the establishment of a plurality of optical paths longer than that of the tubular measuring tank.
- This characteristic gives the emission characteristic of the transmission module, as defined according to the invention, an angular selectivity.
- the presence of the emitter cone avoids, in effect, the radiation loss on the sides of the emission module. In the absence of such a cone, these lateral radiations disappear and are not effective in the emission of infrared that must be emitted in a reduced angular aperture around an optical axis perpendicular to the surface of the emission module.
- the emitter cone is particularly adapted to an increased transmission of energy in a tubular measuring tank, in which an infrared absorption is measured.
- the presence of the emitter cone also makes it possible to recover rays making various angles with the optical axis of the emission module, this favoring the establishment of a plurality of optical paths for the infrared radiation, these optical paths being by reflection on the surface of the emitter cone, then in the tubular measuring tank, of a length greater or even much greater than that of the measuring vessel. This is important to multiply the length and number of optical paths since it is an absorption measurement.
- the use of the reproducible pulsed infrared radiation emitting device according to the invention is intended for the manufacture of infrared absorption measuring devices.
- This pulsed emission device is then coupled with a pyroelectric detector which can not detect the quantity of infrared radiation only when this radiation is pulsed. This also implies that the radiation, as received by the pyroelectric element, has passed a sufficiently long length in the absorber fluid so that the absorption measurement can be of sufficient precision for the requirements of the measuring apparatus concerned. .
- the presence of the emitter cone makes it possible to reinforce the quantity of energy emitted in the angular aperture corresponding to that of the cone, and thus to reinforce the quantity of energy sent into the measurement vessel.
- the presence of the cone further allows for a sufficient amount of sufficiently long optical paths to be made in the measurement vessel to provide sufficiently quantitative absorption for the measurement to be reliable and sufficiently resolved.
- the angular aperture of the emitter cone is between 10 ° and 45 ° .Preferentially, the angular aperture is between 35 ° and 40 °. Ideally, the angle is around 38 °.
- Such an angular opening conventionally corresponds to a compromise between the possibility of reflecting the rays and the minimization of losses by absorption by the material constituting the emitter cone.
- the transmitting module can be realized in various ways and with different materials.
- the conductive layer or the conductive filament may be made of a metal selected from platinum, gold, silver or copper, or may be made of doped polysilicon.
- the semiconductor thin film also called sensitive layer, is advantageously made of metal oxide.
- these oxides there are in particular the oxides of tin, aluminum, tungsten, silica, niobium.
- the combination of a platinum wire with a thin semiconducting tin oxide layer makes it possible to obtain a transmission module that emits reproducible pulses, provided that this wire is fed with a periodic current. drawn.
- the metal oxide is doped.
- the substrate may be made of a material chosen from ceramics or substrates based on silicon.
- Such substrates commonly used in the field of semiconductors, make it possible to obtain a reproducible pulsed infrared source.
- a thermal diffusion limiting membrane is inserted between the substrate and the conductive layer.
- This characteristic further improves the thermal behavior of the component by stabilizing the thermal phenomena.
- the length of the tank is chosen so that the absorption measurements are obtained while respecting a standard deviation of 0.007 mg / l for concentrations of less than 0.4 mg / l, a relative standard deviation less than 1.75% for concentrations greater than or equal to 0.4 mg / l and less than or equal to 2 mg / l and less than 6% for concentrations greater than or equal to 2 mg / l.
- the maximum permissible error is 0.02 mg / l more or less for concentrations lower than 0.4 mg / l, that the relative maximum permissible error is 5% for concentrations greater than or equal to 0.4 mg / l and less than or equal to 2 mg / l and 20% for concentrations greater than or equal to 2 mg / l.
- the invention also relates to the use of a semiconductor reducing gas sensor, using a variation in the conductivity of the semiconductor material as a function of the adsorption of the gas on this material.
- a device for emitting pulsed infrared radiation emitting reproducible pulses in the spectral range [9; 10 ⁇ m] according to the invention.
- FIG. 1 is a schematic representation of an infrared radiation emitting device according to the invention on which there is an example of a periodic signal consisting of reproducible pulses as supplied at the input of the transmission device of the invention;
- FIG. 2 schematically represents a transmission module as implemented in a device according to the invention
- FIG. 2A is a view from above
- FIG. 2B is a sectional view of the transmission module according to a method of FIG. advantageous embodiment of an emitter cone according to the invention
- FIG. 3 shows schematically the essential elements of a device for measuring the concentration of a gas in a measuring vessel by infrared absorption.
- FIG. 1 shows schematically an infrared radiation emitting device according to the invention.
- This device comprises a power supply module 1, able to supply a periodic pulsed current I or a voltage V also periodic and pulsed.
- This voltage V or current I is supplied to the input of a transmission module 2, possibly equipped with an emitter cone 3, for the production of infrared radiation IR by the emission module 2.
- the power supply of the emitter is thus carried out by electronics which makes it possible to generate a signal constituted of regular pulses as represented in FIG.
- FIG. 3 shows the constitution of a transmission module 2 as used in an infrared radiation emitting device according to the invention.
- the transmission module 2 comprises a substrate 20 made of silicon or ceramic, on which a membrane 21 is placed.
- This membrane 21 is covered with a layer of electrical insulator 22 in which is integrated a layer of conductive material 23.
- Another layer of insulating material 24 and heat diffuser covers the entire layer 22 and the conductive layer 23 , before metallizations 25 and an active layer of metal oxide 26 are arranged.
- This active layer 26 is the one on which the gas whose concentration it is desired to measure is adsorbed when the emission module 2 is used as a reducing gas sensor.
- the presence of the membrane 21 makes it possible to limit the thermal diffusion towards the substrate 20 and allows a good stability of the thermal inertia, making it possible to improve the reproducibility of the infrared radiation pulses, as emitted by the emission module 2 .
- the membrane 21 As the membrane 21, the presence of the metallizations 25 has an impact on the thermal inertia of the entire component. Nevertheless, the essential functional parts of the infrared radiation emission include the substrate 20, the insulating layers 22, 24, surrounding the conductive layer 23, acting as a resistor and the layer of semiconductor material 26. in fact to use a metal filament 23, thermally conductive, located under the sensitive layer 26 of the transmitter. It is electrically isolated from the latter by another layer 24 which diffuses the temperature. It is therefore the whole filament + layers that emits infrared radiation.
- the emission module is therefore advantageously a semiconductor component used as a reducing gas sensor, for example COHC or VOC gas.
- These sensors are generally made with a metal oxide on which the gas is adsorbed. This adsorption then causes the variation of the resistivity, ie the electrical conductivity of the metal oxide semiconductor layer 26 measured at the terminals of the metallizations 25. It is necessary, in order to observe the resistivity variation, that this layer 26 be heated to high temperatures, above 250 0 C in general.
- the role of the heating resistor 23 is therefore, in these sensors, heating the semiconductor thin film 26 to allow the oxidation-reduction reaction to detect the gas of interest.
- the heating resistor 23 may be made with a platinum or other metal wire or, in a more integrated manner, from a doped polysilicon layer, whose metal connections 27 are made of chromium-titanium-platinum alloy. which makes it possible to obtain a satisfactory thermoelectric power.
- the substrate 20 is advantageously made of silicon or ceramic.
- the insulating layers 22, 24 are advantageously made from a silicon-based ceramic, for example silicon nitride of Si 3 N 4 formulation.
- the membrane 21, which limits the thermal diffusion, can also be made from a ceramic material. For example, it has a thickness of 3 ⁇ m for a component with a depth Ll of the order of 100 ⁇ m.
- the characteristic width, noted L2 of the active metal oxide layer 26 and the conductive layer 23 is typically of the order of 50 microns.
- the transmission module makes it possible to work in pulsed mode, in a repeatable and reproducible manner. This avoids the use of a cumbersome engine / chopper torque, usually necessary for infrared or monochromatic measurements to obtain a signal with an exploitable signal-to-noise ratio.
- the emission module 2 is provided with a concentrator 3, in which is dug a so-called transmitter cone 31 whose surfaces are polished and coated with a deposit 32 of infrared reflective material.
- the assembly consisting of the emission module 2 and the concentrator 3 allows the production of infrared radiation emitting device entirely suitable for measuring the concentrations of ethanol by infrared absorption.
- Figure 4 schematically represents the essential elements of a portable breathalyzer measuring apparatus operating by infrared absorption. This apparatus makes it possible to analyze the concentration of alveolar alcohol and uses a pulsed infrared source according to the invention.
- the use of the invention makes it possible to produce a portable breathalyzer approved by international legal metrology and whose measurements can serve as references and legal proof in the context of the measurement of alcohol in the human breath.
- a tubular measuring tank 40 is provided with two end pieces 41 and 42, each carrying respectively an infrared transmitter 2 according to the invention provided with an emitter cone 3 and a receiving cell 45.
- the infrared transmitter 2 is connected to a power supply module 1 not shown in FIG. 3.
- the measurement system presented in this figure operates in an optical monotrajet.
- the end pieces 41 and 42 respectively comprise a tubular inlet structure of the sample 43 and a tubular exit structure of the sample 44.
- These tubular structures 43 and 44 are advantageously connected to a pumping system in order to ensure the circulation of the breath sample by the user of the portable breathalyzer device.
- the tips 41 and 42 also advantageously comprise a conical internal structure so as to channel the radiation into the tubular vessel.
- the receiving cell 45 is advantageously a pyroelectric detector, this type of component making it possible to detect thermal radiation in the far-field spectrum starting from 3 ⁇ m.
- the response ranges of this type of detector vary between 1 and 200Hz.
- the pair of transmitter and receiver components used gives an optimal signal for a frequency around 5Hz.
- the frequency used is between 4 and 8 Hz.
- the pyroelectric effect results in a modification of the natural polarization of the ferroelectric element of the sensor which is a crystal.
- the absorption of thermal radiation generally corresponds to a variation of temperature and is reflected by the appearance of electric charges on the surface.
- the distribution of alternating charges must neutralized by free electrons and surface potentials, so that no potential difference is measured.
- the infrared radiation source is not constant in intensity in order to generate polarization variations and to allow the detection of the radiation. It is for this reason that the infrared transmitter 2 must be pulsed at a given frequency thanks to a suitable electronics.
- this frequency will be of the order of 5 Hz for the targeted applications.
- An advantageous embodiment of such heating consists in providing the measurement vessel 40, on its outer face, with a resistor, not shown, wound along the entire length of the measurement vessel 40.
- This resistance makes it possible to achieve, at within the measuring vessel 40, temperatures of the order of 40 0 C, higher than the maximum temperature that can reach the human breath. This ensures the absence of condensation on the walls of the tank and at its ends.
- each of these components is advantageously provided with an optical window 46 and 47 barium fluoride thickness, for example, of the order of 1.5 mm.
- the sealing of this window is provided, advantageously, thanks to O-rings 46 'and 47'.
- clamping nuts 48 and 49 hold the transmitter 2 and the pyroelectric receiver 45 respectively in place.
- the length of the measuring vessel and its diameter are chosen according to the maximum permissible errors and the standard deviations as defined in the international standard OIML R 126.
- the end pieces 41 and 42 have tapered sections of angular opening of between 7 and 30 °, and preferably between 8 ° and 17 °, 12.5 ° in FIG.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2751119A CA2751119A1 (en) | 2009-01-28 | 2010-01-28 | Device for emitting pulsed infrared radiation |
AU2010209550A AU2010209550B2 (en) | 2009-01-28 | 2010-01-28 | Device for emitting pulsed infrared radiation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0950525 | 2009-01-28 | ||
FR0950525A FR2941578B1 (en) | 2009-01-28 | 2009-01-28 | DEVICE FOR TRANSMITTING INFRARED PULSE RADIATION |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010086556A1 true WO2010086556A1 (en) | 2010-08-05 |
Family
ID=41256321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/050133 WO2010086556A1 (en) | 2009-01-28 | 2010-01-28 | Device for emitting pulsed infrared radiation |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2010209550B2 (en) |
CA (1) | CA2751119A1 (en) |
FR (1) | FR2941578B1 (en) |
WO (1) | WO2010086556A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4644141A (en) * | 1984-10-12 | 1987-02-17 | Dragerwerk Ag | Infrared radiator |
US4754141A (en) * | 1985-08-22 | 1988-06-28 | High Technology Sensors, Inc. | Modulated infrared source |
US20060154377A1 (en) * | 2005-01-12 | 2006-07-13 | Lambert David K | Chemical vapor sensor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4268751A (en) * | 1979-04-02 | 1981-05-19 | Cmi Incorporated | Infrared breath analyzer |
-
2009
- 2009-01-28 FR FR0950525A patent/FR2941578B1/en not_active Expired - Fee Related
-
2010
- 2010-01-28 AU AU2010209550A patent/AU2010209550B2/en not_active Ceased
- 2010-01-28 WO PCT/FR2010/050133 patent/WO2010086556A1/en active Application Filing
- 2010-01-28 CA CA2751119A patent/CA2751119A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4644141A (en) * | 1984-10-12 | 1987-02-17 | Dragerwerk Ag | Infrared radiator |
US4754141A (en) * | 1985-08-22 | 1988-06-28 | High Technology Sensors, Inc. | Modulated infrared source |
US20060154377A1 (en) * | 2005-01-12 | 2006-07-13 | Lambert David K | Chemical vapor sensor |
Non-Patent Citations (1)
Title |
---|
KEHSE U: "Digital bloodhounds", PICTURES OF THE FUTURE, 2004, pages 81 - 84, XP002554267, Retrieved from the Internet <URL:https://w1.siemens.com/innovation/pool/en/publikationen/publications_pof/PoF_Fall_2004/Sensors_articles/Gas_Sensors/PoF104art01_1225593.pdf> [retrieved on 20091104] * |
Also Published As
Publication number | Publication date |
---|---|
AU2010209550A1 (en) | 2011-11-17 |
FR2941578B1 (en) | 2011-03-18 |
AU2010209550B2 (en) | 2013-03-21 |
CA2751119A1 (en) | 2010-08-05 |
FR2941578A1 (en) | 2010-07-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101311322B1 (en) | Infrared gas detector and infrared gas measuring device | |
EP2246677B1 (en) | Bolometric detector of electromagnetic radiation from the infrared to the terahertz spectral domain and detector array device comprising said detectors. | |
EP2743679B1 (en) | Infrared detection device | |
EP1880176B1 (en) | Thermal detector for electromagnetic radiation and infrared detection device using said detectors | |
EP1721136B1 (en) | Method for production of a device for thermal detection of radiation comprising an active microbolometer and a passive microbolometer | |
FR2884608A1 (en) | Bolometric detector, e.g. for use with infrared camera, has bolometer connected to receiving antenna via load resistor, where antenna is double dipole type antenna and is thermally isolated from support substrate by isolating arms | |
WO2010007266A1 (en) | Bolometric detector for detecting electromagnetic waves | |
FR2703869A1 (en) | Electrically modulable thermal radiation source and process for its production. | |
FR2623287A1 (en) | NON-DISPERSIVE GAS OPTICAL ANALYZER | |
WO2010086557A1 (en) | Portable breath analyser apparatus | |
FI127446B (en) | Infrared emitter having a layered structure | |
FR2875336A1 (en) | DEVICE FOR DETECTING INFRARED RADIATION WITH BOLOMETRIC DETECTORS | |
WO2012164523A1 (en) | Spectroscopic detector and corresponding method | |
WO2010086556A1 (en) | Device for emitting pulsed infrared radiation | |
RU2452924C1 (en) | Method of determining circular polarisation sign of laser radiation | |
FR2885690A1 (en) | Thermal infrared radiation detector e.g. resistive type bolometer, for infrared imaging application, has sensitive material presented in form of wafer extending along direction perpendicular to plane in which substrate is inscribed | |
WO2020234404A1 (en) | Device for emitting and controlling infrared light and gas sensor using such a device | |
FR2557728A1 (en) | METHOD FOR TEMPERATURE COMPENSATION OF A PHOTOCONDUCTIVE DETECTOR | |
WO2004044541A1 (en) | Measuring device for a heat flux | |
FR2748810A1 (en) | Miniature source of infrared radiation, with coated metal microfilament | |
CA2805205C (en) | Optical probe for measuring absorption at a plurality of wavelengths | |
FR3091755A1 (en) | Light source for gas sensor | |
WO2024028209A1 (en) | Thermal detector of radiation | |
Al-Mumen | Characterization of UV Detectors Based on Dye Sensitized Cell | |
EP4012786A1 (en) | Method for determining a heating temperature of a heterojunction photovoltaic cell during a processing method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10707606 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2751119 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 2010209550 Country of ref document: AU Date of ref document: 20100128 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10707606 Country of ref document: EP Kind code of ref document: A1 |