WO2010073785A1 - 分光測定装置 - Google Patents
分光測定装置 Download PDFInfo
- Publication number
- WO2010073785A1 WO2010073785A1 PCT/JP2009/066544 JP2009066544W WO2010073785A1 WO 2010073785 A1 WO2010073785 A1 WO 2010073785A1 JP 2009066544 W JP2009066544 W JP 2009066544W WO 2010073785 A1 WO2010073785 A1 WO 2010073785A1
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- WO
- WIPO (PCT)
- Prior art keywords
- integrating sphere
- sample
- dewar
- light
- gas
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 35
- 239000002826 coolant Substances 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 15
- 230000005494 condensation Effects 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 51
- 230000002093 peripheral effect Effects 0.000 description 34
- 238000012937 correction Methods 0.000 description 31
- 238000004458 analytical method Methods 0.000 description 18
- 230000005284 excitation Effects 0.000 description 16
- 238000001228 spectrum Methods 0.000 description 15
- 230000003595 spectral effect Effects 0.000 description 14
- 238000004891 communication Methods 0.000 description 12
- 238000007405 data analysis Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 5
- 238000005424 photoluminescence Methods 0.000 description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000004611 spectroscopical analysis Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 229920000995 Spectralon Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000006862 quantum yield reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0254—Spectrometers, other than colorimeters, making use of an integrating sphere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0286—Constructional arrangements for compensating for fluctuations caused by temperature, humidity or pressure, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a spectrometer, e.g. vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/0332—Cuvette constructions with temperature control
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- 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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
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- 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
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/158—Eliminating condensation
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
- G01N2021/6419—Excitation at two or more wavelengths
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6463—Optics
- G01N2021/6471—Special filters, filter wheel
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6484—Optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/065—Integrating spheres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
- G01N2201/0833—Fibre array at detector, resolving
Definitions
- the present invention relates to a spectroscopic measurement apparatus for measuring a sample that includes an integrating sphere and is cooled to a desired temperature.
- a spectroscopic measurement apparatus that includes an integrating sphere for observing light to be measured emitted from a sample is known that cools the sample (for example, see Patent Document 1).
- the sample is cooled to a desired temperature by bringing the sample disposed so as to face the integrating sphere into contact with the refrigerant.
- a spectroscopic measurement apparatus equipped with an integrating sphere one that cools the integrating sphere is known (for example, see Patent Document 2).
- cold air is introduced into the integrating sphere to cool the integrating sphere to a desired temperature.
- Patent Document 3 The applicant has applied for a photodetection device equipped with an integrating sphere (see, for example, Patent Document 3).
- JP-A-61-082442 Japanese Patent Application Laid-Open No. 07-146175 JP 2007-86031 A
- the sample is cooled by contacting the refrigerant. For this reason, dew condensation occurs in the portion of the sample exposed in the integrating sphere, and proper measurement is hindered. If dew condensation occurs on the sample, it interferes with the incidence of light to be measured on the sample.
- the inner peripheral surface of the integrating sphere is generally made of a diffuse reflection material (for example, Spectralon (registered trademark), barium sulfate, etc.) having high reflectivity and excellent diffusibility. Depending on the components of the diffuse reflection material, when moisture generated by condensation adheres, the diffuse reflection material is dissolved, and the diffuse reflection by the inner peripheral surface of the integrating sphere becomes insufficient.
- An object of the present invention is to provide a spectroscopic measurement apparatus capable of preventing the occurrence of condensation even when measuring a sample cooled to a desired temperature.
- the present invention is a spectroscopic measurement apparatus including an integrating sphere in which a sample to be measured is arranged and observing light to be measured emitted from the sample, and holds a refrigerant for cooling the sample, and at least one of them.
- a dewar positioned so that the portion faces the integrating sphere, and a gas introduction path for introducing the gas generated from the refrigerant held in the dewar into the integrating sphere.
- a gas that is relatively low in temperature and dried is generated by the vaporization of the refrigerant held in the dewar.
- the gas generated from the refrigerant is introduced into the integrating sphere through the gas introduction path.
- the inside of the integrating sphere is in a relatively low temperature and dry environment due to the gas generated from the refrigerant, and it is possible to prevent dew condensation from occurring in the exposed portion of the integrating sphere in the dewar.
- a cover is further provided to cover a portion exposed from the integrating sphere of Dewar.
- the gas generated from the refrigerant can be prevented from being diffused outside the apparatus, and the gas can be efficiently guided into the integrating sphere.
- the cover is provided with a gas introduction path.
- the gas introduction path can be installed reliably and easily.
- the apparatus further includes a sample holder that accommodates the sample and is disposed in the dewar.
- the sample can be cooled by the refrigerant without contacting the refrigerant.
- a gas introduction path for introducing dry gas into the integrating sphere is further provided.
- a spectroscopic measurement device capable of preventing the occurrence of condensation even when measuring a sample cooled to a desired temperature.
- FIG. 1 It is a figure which shows typically the structure of one Embodiment of a spectrometer. It is a perspective view which shows an example of a structure of an integrating sphere and a Dewar housing
- FIG. 1 is a diagram schematically showing a configuration of a spectrometer according to the present embodiment.
- the spectroscopic measurement apparatus 1 ⁇ / b> A according to the present embodiment includes an irradiation light supply unit 10, an integrating sphere 20, a spectroscopic analysis device 30, a dewar casing 40, a dewar 50, and a data analysis device 90.
- the spectroscopic measurement apparatus 1A can irradiate a sample S such as a luminescent material with excitation light having a predetermined wavelength, and measure and evaluate light emission characteristics such as fluorescence characteristics of the sample S by a photoluminescence (PL) method. It is configured.
- PL photoluminescence
- the irradiation light supply unit 10 supplies excitation light for measuring the light emission characteristics of the sample S as irradiation light supplied into the integrating sphere 20 in which the sample S to be measured is accommodated.
- the irradiation light supply unit 10 functions as irradiation light supply means.
- the irradiation light supply unit 10 includes an irradiation light source 11 and a light guide 13 that guides light from the irradiation light source 11 to the integrating sphere 20.
- a wavelength switching unit 12 is installed between the irradiation light source 11 and the light guide 13.
- the irradiation light supply unit 10 can switch the irradiation light to the integrating sphere 20 between excitation light having a predetermined wavelength and light including a light component in a predetermined wavelength range (hereinafter referred to as white light). Configured. Therefore, the irradiation light supply unit 10 functions as excitation light supply means and white light supply means.
- a white light source is used as the irradiation light source 11, and only light components within a predetermined wavelength range among light supplied from the irradiation light source 11 in the wavelength switching unit 12 are used.
- a configuration in which wavelength selecting means for selecting and allowing the light guide 13 to pass can be used.
- the irradiation light to the integrating sphere 20 is white light
- the wavelength selection is ON
- the irradiation light to the integrating sphere 20 is excitation light having a predetermined wavelength.
- a spectral filter or a spectroscope can be used as the wavelength selection means.
- the integrating sphere 20 is used for measuring the light emission characteristics of the sample S disposed inside.
- the integrating sphere 20 includes an incident opening 21 for allowing the excitation light applied to the sample S to enter the integrating sphere 20, an exit opening 22 for emitting the measured light from the sample S to the outside,
- a first sample introduction opening 23 for introducing the sample S into the integrating sphere 20 is provided.
- a dewar casing 40 is detachably attached to the first sample introduction opening 23 with an attachment screw.
- the exit end of the light guide 13 for incident light is fixed to the entrance opening 21 of the integrating sphere 20.
- an optical fiber can be used as the light guide 13.
- An incident end of a light guide 25 that guides light to be measured from the sample S to the subsequent spectroscopic analyzer 30 is fixed to the exit opening 22 of the integrating sphere 20.
- the light guide 25 for example, a single fiber or a bundle fiber can be used.
- the spectroscopic analyzer 30 separates the light to be measured from the sample S emitted from the exit opening 22 of the integrating sphere 20 through the light guide 25 and acquires the wavelength spectrum thereof.
- the spectroscopic analyzer 30 functions as spectroscopic means.
- the spectroscopic analyzer 30 is configured as a multichannel spectroscope having a spectroscopic unit 31 and a spectroscopic data generation unit 32.
- the spectroscopic unit 31 includes a spectroscope that decomposes the light to be measured into wavelength components and a photodetector that detects light from the spectroscope.
- a photodetector for example, a CCD linear sensor in which pixels of a plurality of channels (for example, 1024 channels) for detecting each wavelength component of wavelength-resolved light to be measured can be used.
- the measurement wavelength region by the spectroscopic unit 31 may be appropriately set according to a specific configuration or the like, and is, for example, 300 nm to 950 nm.
- the spectral data generation unit 32 performs signal processing necessary for detection signals output from each channel of the photodetector of the spectral unit 31, and generates wavelength spectrum data that is spectral data of the light to be measured.
- the spectral data generation unit 32 functions as spectral data generation means.
- the wavelength spectrum data generated and acquired by the spectral data generation unit 32 is output to the data analysis device 90 at the subsequent stage.
- the data analyzer 90 is a data analyzer that performs necessary data analysis on the wavelength spectrum acquired by the spectroscopic analyzer 30 and acquires information about the sample S. Details of data analysis in the data analysis device 90 will be described later.
- an input device 97 used for inputting instructions for data analysis and the like, input of analysis conditions, and a display device 98 used for displaying data analysis results.
- FIG. 2 is a perspective view showing an example of the configuration of integrating sphere 20 and dewar casing 40 used in spectroscopic measurement apparatus 1A shown in FIG.
- FIGS. 3 to 6 are cross-sectional views showing examples of configurations of the integrating sphere 20, the dewar casing 40, and the dewar 50, and the integrating sphere 20 and the dewar casing in a section along the irradiation optical axis L of the excitation light. 40 and the configuration of the dewar 50 are shown.
- the cross sections in FIGS. 3 and 5 and the cross sections in FIGS. 4 and 6 are orthogonal to each other.
- the integrating sphere 20 includes an integrating sphere main body 200 attached to the gantry 280 with mounting screws 285.
- the gantry 280 is formed in an L shape having two grounding surfaces 281 and 282 orthogonal to each other.
- the irradiation optical axis L passes through the center position of the integrating sphere body 200 and extends in a direction parallel to the ground plane 281 and orthogonal to the ground plane 282.
- the integrating sphere body 200 is provided with the entrance opening 21, the exit opening 22, and the first sample introduction opening 23 shown in FIG.
- the incident opening 21 is provided at a predetermined position (left position in the drawing) of the integrating sphere main body 200 on one side of the optical axis L.
- the exit opening 22 is provided at a predetermined position on a plane that passes through the center position of the integrating sphere body 200 and is orthogonal to the optical axis L.
- the first sample introduction opening 23 passes through the central position of the integrating sphere main body 200 and on the plane orthogonal to the optical axis L, a position shifted from the emission opening 22 by 90 ° (the upper position in the figure). Is provided.
- a second sample introduction opening 24 is provided in addition to the first sample introduction opening 23.
- the second sample introduction opening 24 is provided on the other side of the optical axis L and at a position facing the incident opening 21 (right position in the figure).
- a sample holder 240 for mounting a sample is attached to the second sample introduction opening 24.
- a light guide holder 210 for connecting the light guide 13 for irradiating light is inserted and attached to the incident opening 21.
- a light guide holder 220 for connecting a light guide 25 for emitting light to be measured is inserted and attached to the emission opening 22. 2 to 6, illustration of the light guides 13 and 25 is omitted.
- a sample holder 80 for holding the sample S in a predetermined position in the integrating sphere 20 and a dewar 50 for cooling the sample S held in the sample holder 80 are provided.
- the sample holder 80 is a tubular member with one end closed.
- the dewar 50 is for holding a refrigerant (for example, liquid nitrogen) that cools the sample S, and is a substantially tubular container having one end closed.
- the dewar 50 has a heat insulating double structure having a vacuum layer.
- the sample holder 80 is positioned and arranged inside the dewar 50.
- the dewar 50 has a first container portion 50a having a first inner diameter and located on the other end side, and a second container portion 50b having a second inner diameter smaller than the first inner diameter and located on one end side. ,have.
- the second inner diameter is set larger than the outer diameter of the sample holder 80, and a space is formed between the second container portion 50 b and the sample holder 80 in a state where the sample holder 80 is disposed in the dewar 50. Is done.
- the sample S held on one end side of the sample holder 80 is cooled.
- the dewar casing 40 is a member having a space for accommodating the dewar 50 therein, and includes a first case 41, a second case 43, a first lid plate 45, and a second lid plate 47.
- the first case 41 is a bottomed member including a cylindrical (cylindrical in the present embodiment) body 41a and a bottom 41b located on one end of the body 41a.
- An opening 42 is formed at the center of the bottom 41b.
- the first cover plate 45 is detachably attached to the bottom 41b of the first case 41 with a mounting screw 51, and closes the opening 42 formed in the bottom 41b.
- the second case 43 is composed of a cylindrical (cylindrical in the present embodiment) body 43a that is open at both ends.
- the first case 41 and the second case 43 are detachably attached by attachment screws 52, and are fixed in a state in which the other end sides thereof are in contact with each other.
- the second lid plate 47 is detachably attached to one end of the second case 43 by a mounting screw 53, and closes the opening at the one end.
- An opening 48 for inserting the second container portion 50 b of the dewar 50 is formed in the central portion of the second lid plate 47 so as to communicate with the first sample introduction opening 23.
- the second lid plate 47 is formed with a drain opening 49 for discharging water accumulated in the dewar casing 40.
- the drain opening 49 is normally closed by a screw 54.
- the dewar 50 is positioned in the radial direction by a plurality of spacers 70 provided at predetermined intervals on the inner peripheral surfaces of the first case 41 and the second case 43.
- Each spacer 70 forms a predetermined gap G ⁇ b> 1 between the inner peripheral surfaces of the first case 41 and the second case 43 and the outer peripheral surface of the first container portion 50 a of the dewar 50.
- a support base 61 that supports the dewar 50 is detachably attached to the second lid plate 47 with attachment screws 55.
- the support base 61 is a substantially columnar member.
- a through hole 62 for inserting the second container portion 50 b of the dewar 50 is formed in the central portion of the support base 61 so as to communicate with the opening 48 formed in the second lid plate 47.
- a predetermined gap G ⁇ b> 2 is formed between the inner peripheral surface of the second case 43 and the outer peripheral surface of the support base 61.
- An annular packing (not shown) is provided between the second lid plate 47 and the support base 61 so as to surround the through hole 62. The packing is sandwiched between the second lid plate 47 and the support base 61, so that watertightness between the second lid plate 47 and the support base 61 is achieved.
- the support base 61 is provided with a projecting portion 63 projecting from the second surface 61b on the second surface 61b facing the first surface 61a attached to and in contact with the second cover plate 47.
- the protrusion 63 is formed in a ring shape so as to surround the outer side of the through hole 62 when viewed from the central axis direction of the through hole 62.
- the protrusion 63 defines the position in the insertion direction of the dewar 50 by contacting the dewar 50.
- the second surface 61b of the support base 61 and the dewar 50 are separated by the height of the protrusion 63, and a predetermined gap G3 is formed between the second surface 61b of the support base 61 and the dewar 50. Yes.
- An annular packing (not shown) is provided between the support base 61 and the dewar 50 so as to surround the protrusion 63.
- the packing is sandwiched between the support base 61 and the dewar 50 so that the water tightness between the support base 61 and the dewar 50 is achieved.
- the support base 61 includes a predetermined gap G ⁇ b> 2 formed between the inner peripheral surface of the second case 43 and the outer peripheral surface of the support base 61, and between the second surface 61 b of the support base 61 and the dewar 50.
- a plurality of communication paths 64 communicating with the formed predetermined gap G3 is formed.
- the communication passages 64 are arranged at equiangular intervals (for example, approximately 90 ° intervals) around the central axis of the through hole 62.
- the communication passage 64 includes a first passage portion 65 and a second passage portion 66.
- the first passage portion 65 opens on the outer peripheral surface of the support base 61 and extends from the outer peripheral surface of the support base 61 in the radial direction of the support base 61.
- the second passage portion 66 extends from the first passage portion 65 in a direction parallel to the central axis of the through hole 62 and opens in the second surface 61b.
- Predetermined gaps G4, G5, and G6 are formed between the inner peripheral surface and between the outer periphery of the second container portion 50b and the inner peripheral surface of the first sample introduction opening 23, respectively.
- the gaps G4, G5, and G6 communicate with each other, and communicate with the predetermined gap G3 and the space in the integrating sphere 20 between the second surface 61b of the support base 61 and the dewar 50.
- the space in the dewar 50 includes a plurality of communication paths 64 formed in the support base 61, a predetermined gap G3 formed between the second surface 61b of the support base 61 and the dewar 50, and the second container.
- a predetermined gap G4 formed between the outer periphery of the portion 50b and the inner peripheral surface of the through hole 62, and between the outer periphery of the second container portion 50b and the inner peripheral surface of the opening 48 of the second lid plate 47.
- the length of the second container portion 50b is set so that the tip portion of the second container portion 50b protrudes into the integrating sphere 20 by a predetermined length while the dewar 50 is in contact with the contact surface of the support base 61.
- the length of the second container portion 50 b is set so that the sample S held in the sample holder 80 positioned in the dewar 50 is positioned in the integrating sphere 20.
- the tip of the second container portion 50 b of the dewar 50 is exposed in the integrating sphere 20.
- the dewar 50 and the sample holder 80 are preferably formed of a material that transmits light including excitation light and light to be measured.
- a material that transmits light including excitation light and light to be measured For example, an optical cell made of synthetic quartz glass is preferably used.
- the first sample introduction opening 23 and the sample holder 80 can be suitably used when the solution in which the light emitting material is dissolved is the sample S, for example.
- a sample holder 80 can also be used when the sample S is a solid sample, a powder sample, or the like.
- the second sample introduction opening 24 and the sample holder 240 can be suitably used, for example, when the sample S is a solid sample or a powder sample. In this case, for example, a sample holding substrate or a petri dish is used as the sample holder.
- the sample holders 80 and 240 are selectively used according to the type of the sample S, the content of the spectroscopic measurement, and the like.
- the integrating sphere 20 is set with the grounding surface 281 of the gantry 280 down so that the optical axis L is along the horizontal line.
- the integrating sphere 20 is set with the ground surface 282 of the gantry 280 down so that the optical axis L is along the vertical line.
- the light guide 13 for incident light incidence is held in a state of being positioned by the light guide holding portion 211 of the light guide holder 210.
- Light from the irradiation light source 11 (see FIG. 1) is guided to the integrating sphere 20 by the light guide 13, and collected by the condenser lens 212 installed in the light guide holder 210, while entering the sample holder 80. Irradiated.
- the portion of the sample holder 80 that holds the sample S is located at a location that is off the optical path from the excitation light incident opening 21.
- the light guide 25 for emitting the light to be measured is held in a state of being positioned by the light guide holder 220.
- the light from the sample S irradiated with the excitation light is a highly diffuse reflection powder (for example, applied to the inner wall of the integrating sphere body 200 (for example, , Spectralon (registered trademark), barium sulfate, etc.).
- the diffusely reflected light is incident on the light guide 25 connected to the light guide holder 220 and guided to the spectroscopic analyzer 30 as light to be measured. Thereby, the spectroscopic measurement is performed on the light to be measured from the sample S.
- the light from the sample S to be measured light includes light emission such as fluorescence generated in the sample S by irradiation of excitation light, and light components scattered and reflected by the sample S in the excitation light.
- FIG. 8 is a block diagram showing an example of the configuration of the data analysis apparatus 90 used in the spectroscopic measurement apparatus 1A shown in FIG.
- the data analysis device 90 in this configuration example includes a spectral data input unit 91, a sample information analysis unit 92, a correction data acquisition unit 93, and an analysis data output unit 96.
- a correction data calculation unit 94 and a correction data storage unit 95 are provided for the correction data acquisition unit 93.
- the spectral data input unit 91 inputs data such as a wavelength spectrum acquired as spectral data by the spectral analyzer 30.
- the spectral data input unit 91 functions as an input unit.
- the spectral data input from the spectral data input unit 91 is sent to the sample information analysis unit 92.
- the sample information analysis unit 92 analyzes the input wavelength spectrum and acquires information about the sample S.
- the sample information analysis unit 92 functions as a sample information analysis unit.
- the correction data acquisition unit 93 is different from the above configuration in which the sample S is held by the sample holder 80 in the integrating sphere 20, at least one of absorption of light by the sample holder 80, specifically, excitation light or emission from the sample S.
- Correction data for correcting the wavelength spectrum in consideration of the absorption of the light is acquired.
- the correction data acquisition unit 93 functions as correction data acquisition means.
- the sample information analysis unit 92 corrects the wavelength spectrum with the correction data acquired by the correction data acquisition unit 93 and analyzes the corrected wavelength spectrum to obtain information on the sample S such as the emission quantum yield by the PL method. get.
- the correction data of the wavelength spectrum can be acquired from the correction data calculation unit 94, for example.
- the correction data calculation unit 94 refers to the wavelength spectrum of the measurement result for deriving correction data executed under a predetermined condition, and calculates correction data based on the wavelength spectrum.
- the correction data calculation unit 94 functions as correction data calculation means. A specific correction data calculation method will be described later.
- the correction data of the wavelength spectrum is obtained in advance, the correction data is stored in the correction data storage unit 95, and the correction data acquisition unit 93 reads and acquires the correction data as necessary. Is also possible. In this case, the correction data calculation unit 94 may not be provided.
- the correction data calculated by the correction data calculation unit 94 may be stored in the correction data storage unit 95, and the correction data acquisition unit 93 may read the correction data as necessary.
- the analysis data output unit 96 outputs the analysis result of the sample information analyzed by the sample information analysis unit 92.
- the analysis data output unit 96 functions as an output unit.
- the display device 98 displays the analysis result on a predetermined display screen for the operator.
- the output destination of the analysis result is not limited to the display device 98, and the data may be output to another device.
- the configuration of FIG. 8 shows a configuration in which an external device 99 is connected to the analysis data output unit 96 in addition to the display device 98. Examples of the external device 99 include a printing device, an external storage device, and other terminal devices.
- the spectroscopic measurement apparatus 1A shown in FIGS. 1 to 7 is provided with an opening 21 for exciting light incidence and an opening 22 for emitting light to be measured so that the emission characteristics of the sample S can be measured by the PL method.
- the spectroscopic measurement apparatus 1A is configured using the integrating sphere 20 configured as described above and the spectroscopic analysis apparatus 30 that performs spectroscopic measurement of the light to be measured so that the excitation light and the light emission from the sample S can be distinguished by the wavelength spectrum.
- correction data in consideration of light absorption by the sample container is prepared in the analyzer 90, and after correcting the wavelength spectrum with this correction data, the wavelength spectrum Analysis and derivation of sample information.
- the influence of light absorption by the sample holder 80 cannot be ignored, it is possible to suppress the error generated in the analysis result such as the light emission quantum yield and perform the spectroscopic measurement of the sample S suitably and accurately. .
- measurement can be performed in a state where the sample S is cooled by the refrigerant R held in the dewar 50.
- the refrigerant R For example, when liquid nitrogen is used as the refrigerant R, spectroscopic measurement of the sample S near the liquid nitrogen temperature (approximately ⁇ 196 ° C.) becomes possible.
- the dewar 50 holding the refrigerant R since the dewar 50 holding the refrigerant R is used, the sample S can be cooled easily and efficiently.
- the refrigerant R held in the dewar 50 is vaporized, and the vaporization of the refrigerant R generates a relatively low temperature and dry gas.
- the gas generated from the refrigerant R is formed between the inner peripheral surfaces of the first case 41 and the second case 43 and the outer peripheral surface of the first container portion 50a, as indicated by arrows in FIGS.
- a predetermined gap G1 A predetermined gap G1 formed between the inner peripheral surface of the second case 43 and the outer peripheral surface of the support base 61, a plurality of communication paths 64 formed in the support base 61, and the support base
- a predetermined gap G3 formed between the second surface 61b of the 61 and the dewar 50, a predetermined gap G4 formed between the outer periphery of the second container portion 50b and the inner peripheral surface of the through hole 62,
- a predetermined gap G5 formed between the outer periphery of the second container part 50b and the inner peripheral surface of the opening part 48 of the second cover plate 47, and the outer periphery of the second container part 50b and the first sample introduction opening part.
- the gaps G 1 to G 6 and the communication path 64 function as a gas introduction path for introducing the gas generated from the refrigerant R held in the dewar 50 into the integrating sphere 20.
- the gas introduced into the integrating sphere 20 absorbs moisture in the integrating sphere 20 and lowers the temperature in the integrating sphere 20.
- the integrating sphere 20 is in a relatively low temperature and dry environment by the gas generated from the refrigerant R, and is exposed to the integrating sphere 20 in the second container portion 50b of the Dewar 50. Condensation can be prevented from occurring in the portion that is being used.
- the gas generated from the refrigerant R enters the integrating sphere 20 from a predetermined gap G6 formed between the outer periphery of the second container 50b and the inner peripheral surface of the first sample introduction opening 23. Flows in.
- the gas that has flowed into the integrating sphere 20 flows along a portion of the second container portion 50b of the dewar 50 that is exposed in the integrating sphere 20.
- This gas flow actively lowers the ambient temperature and humidity in the vicinity of the portion exposed in the integrating sphere 20 in the second container portion 50b. As a result, it is possible to more reliably prevent dew condensation from occurring in the portion exposed in the integrating sphere 20 in the second container portion 50b.
- the integrating sphere 20 basically has a structure in which light cannot leak, but there are slight gaps through which gas can pass through the entrance opening 21 and the exit opening 22. For this reason, the gas that has absorbed the moisture in the integrating sphere 20 is discharged out of the integrating sphere 20 through a slight gap existing in the entrance opening 21 and the exit opening 22. By the way, you may provide separately the discharge opening part which discharges
- the integrating sphere 20 is configured to prevent light from leaking, it is preferable to employ a configuration in which gas is discharged from the above-described slight gap existing in the entrance opening 21 and the exit opening 22.
- the gas generated from the refrigerant R is between the inner peripheral surface of the first case 41 and the second case 43 and the outer peripheral surface of the first container portion 50a in the dewar casing 40. Flows through a predetermined gap G1. Thereby, the atmospheric temperature and humidity in the vicinity of the outer peripheral surface of the first container portion 50a are also reduced, and it is possible to prevent condensation from forming on the outer peripheral surface of the first container portion 50a. Even if dew condensation occurs on the outer peripheral surface of the first container portion 50a and water accumulates in the dewar casing 40, the packings 71 and 72 cause the gap between the second lid plate 47 and the support base 61 and the support base 61.
- the dewar 50 are designed to be watertight, so that water can be prevented from entering the integrating sphere 20. Further, since the communication path 64 includes the first path portion 65 and the second path portion 66, it is difficult for water to enter the integrating sphere 20 through the communication path 64. The water accumulated in the dewar casing 40 is discharged from the drain opening 49.
- the first container portion 50a exposed from the integrating sphere 20 of the Dewar 50 is covered with the Dewar casing 40.
- the dewar casing 40 constitutes a part of the gas introduction path described above. Thereby, installation of the gas introduction path mentioned above can be performed reliably and simply.
- a sample holder 80 is provided which accommodates the sample S and is disposed in the dewar 50. Thereby, the sample S can be reliably cooled without coming into contact with the refrigerant R.
- the dewar casing 40 that houses the dewar 50 is provided, but the dewar casing 40 is not necessarily required.
- the dewar casing 40 does not exist, the dewar 50 and the integrating sphere 20 may be connected by a pipe or the like, and the gas generated from the refrigerant R by the pipe or the like may be introduced into the integrating sphere 20.
- the Dewar casing 40 and the integrating sphere 20 are connected to a plurality of communication paths 64 formed in the support base 61, a second surface 61b of the support base 61, and a predetermined Dew 50.
- Connection is made through a predetermined gap G5 formed between the outer peripheral surface and a predetermined gap G6 formed between the outer periphery of the second container 50b and the inner peripheral surface of the first sample introduction opening 23.
- the Dewar casing 40 and the integrating sphere 20 may be connected by a pipe or the like, and the gas generated from the refrigerant R by the pipe or the like may be introduced from the Dewar casing 40 into the integrating sphere 20.
- the gas generated by the vaporization of the refrigerant R is introduced into the integrating sphere 20, but a dry gas may be introduced into the integrating sphere 20 together with the introduction of the gas.
- a dry gas may be introduced into the integrating sphere 20 together with the introduction of the gas.
- an introduction opening 75 for introducing a drying gas is provided in the dewar casing 40 (for example, the first case 41), and the introduction opening 75 is connected to the drying gas delivery unit 76.
- the gas passage 77 may be connected.
- the dry gas is introduced into the integrating sphere 20 together with the gas generated from the refrigerant R.
- the gas introduction path for introducing the gas generated from the refrigerant R into the integrating sphere 20 functions as a gas introduction path for introducing the dry gas into the integrating sphere 20. Even if the gas introduction path for introducing the dry gas into the integrating sphere 20 and the gas introduction path for introducing the gas generated from the refrigerant R into the integrating sphere 20 are separate paths, the dry gas may be directly introduced into the integrating sphere 20. Good.
- the dry gas for example, nitrogen gas or helium gas can be used.
- the temperature of the refrigerant R held in the dewar 50 may be adjusted by the chiller 101.
- the connection with the chiller 101 can be realized by providing the tube connector 103 on the dewar casing 40 (for example, the first case 41 and the first cover plate 45) and connecting the tube 105 to the tube connector 103.
- the first passage portion 65 of the communication passage 64 is formed so as to incline downward from the connection portion with the second passage portion 66 toward the opening portion to the outer peripheral surface of the support base 61. It may be. In this case, water droplets generated in the communication path 64 are easily discharged out of the support base 61.
- the second passage portion 66 does not need to be formed to extend in a direction parallel to the central axis of the through hole 62, and is formed to be inclined with respect to a direction parallel to the central axis of the through hole 62. Also good.
- the present invention can be used as a spectroscopic measurement apparatus that irradiates a sample with excitation light having a predetermined wavelength and measures and evaluates light emission characteristics such as fluorescence characteristics of the sample by a photoluminescence method.
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Abstract
Description
体40内に溜まっている水は、排水開口部49から排出される。
Claims (5)
- 測定対象の試料が内部に配置され、試料から発せられる被測定光を観測する積分球を備えた分光測定装置であって、
試料を冷却するための冷媒を保持すると共に、少なくとも一部が前記積分球内に臨むように位置するデュワと、
前記デュワに保持された冷媒から発生したガスを前記積分球内に導入するガス導入路と、を備えていることを特徴とする分光測定装置。 - 前記デュワの前記積分球から露出している部分を覆うカバーを更に備えていることを特徴とする請求項1に記載の分光測定装置。
- 前記カバーに、前記ガス導入路が設けられていることを特徴とする請求項2に記載の分光測定装置。
- 試料を収容すると共に前記デュワ内に配置された試料ホルダを更に備えていることを特徴とする請求項1~3のいずれか一項に記載の分光測定装置。
- 乾燥ガスを前記積分球内に導入するガス導入路を更に備えていることを特徴とする請求項1~4のいずれか一項に記載の分光測定装置。
Priority Applications (3)
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EP09834591.1A EP2320212B1 (en) | 2008-12-24 | 2009-09-24 | Spectrometer |
US13/131,777 US8643839B2 (en) | 2008-12-24 | 2009-09-24 | Spectrometer |
CN200980152429.XA CN102265133B (zh) | 2008-12-24 | 2009-09-24 | 光谱测定装置 |
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JP2008-327852 | 2008-12-24 | ||
JP2008327852A JP5225829B2 (ja) | 2008-12-24 | 2008-12-24 | 分光測定装置 |
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US (1) | US8643839B2 (ja) |
EP (1) | EP2320212B1 (ja) |
JP (1) | JP5225829B2 (ja) |
KR (1) | KR101626177B1 (ja) |
CN (2) | CN103323405B (ja) |
WO (1) | WO2010073785A1 (ja) |
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CN102629872B (zh) * | 2012-04-16 | 2014-02-12 | 中国科学院上海光学精密机械研究所 | 积分球冷却和微波集成腔 |
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JP6166096B2 (ja) * | 2013-05-08 | 2017-07-19 | オプテックス株式会社 | 光測定方法および装置 |
JP6279399B2 (ja) * | 2014-05-23 | 2018-02-14 | 浜松ホトニクス株式会社 | 光計測装置及び光計測方法 |
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CN105182524A (zh) * | 2015-10-20 | 2015-12-23 | 中国电子科技集团公司第四十四研究所 | 天文望远镜电荷耦合器用降温装置 |
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US20110235035A1 (en) | 2011-09-29 |
CN102265133B (zh) | 2014-08-06 |
CN102265133A (zh) | 2011-11-30 |
EP2320212A1 (en) | 2011-05-11 |
KR20110102869A (ko) | 2011-09-19 |
EP2320212A4 (en) | 2012-07-11 |
CN103323405A (zh) | 2013-09-25 |
JP5225829B2 (ja) | 2013-07-03 |
JP2010151515A (ja) | 2010-07-08 |
KR101626177B1 (ko) | 2016-05-31 |
CN103323405B (zh) | 2016-01-20 |
EP2320212B1 (en) | 2013-04-17 |
US8643839B2 (en) | 2014-02-04 |
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