WO2023282050A1 - Uvセンサヘッド及びuvセンサヘッド用波長変換部材 - Google Patents
Uvセンサヘッド及びuvセンサヘッド用波長変換部材 Download PDFInfo
- Publication number
- WO2023282050A1 WO2023282050A1 PCT/JP2022/024662 JP2022024662W WO2023282050A1 WO 2023282050 A1 WO2023282050 A1 WO 2023282050A1 JP 2022024662 W JP2022024662 W JP 2022024662W WO 2023282050 A1 WO2023282050 A1 WO 2023282050A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor head
- wavelength conversion
- conversion member
- visible light
- phosphor particles
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 99
- 239000002245 particle Substances 0.000 claims abstract description 59
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 239000013307 optical fiber Substances 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims description 54
- 230000035945 sensitivity Effects 0.000 abstract description 18
- 238000002834 transmittance Methods 0.000 description 15
- 239000000843 powder Substances 0.000 description 14
- 229910018068 Li 2 O Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 238000010304 firing Methods 0.000 description 11
- 229910052708 sodium Inorganic materials 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 238000004017 vitrification Methods 0.000 description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 229910003564 SiAlON Inorganic materials 0.000 description 1
- 229910003069 TeO2 Inorganic materials 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000005365 phosphate glass Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 description 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/0006—Coupling light into the fibre
-
- 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
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
-
- 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
-
- 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
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0425—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using optical fibers
-
- 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
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0433—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using notch filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
- G02B6/3624—Fibre head, e.g. fibre probe termination
Definitions
- the present invention relates to a UV sensor head that converts ultraviolet light into visible light and guides the converted visible light to the optical fiber side, and a wavelength conversion member used in the UV sensor head.
- Patent Document 1 proposes an ultraviolet detector that converts ultraviolet rays into visible light using a wavelength conversion element and detects the amount of the converted visible light.
- fluorescent glass glass doped with a fluorescent component in its composition
- a UV sensor has been developed that converts ultraviolet light into visible light and guides the converted visible light through an optical fiber for sensing.
- a sensor head of such a UV sensor is attached with a fluorescent glass as disclosed in Patent Document 1, and by irradiating the fluorescent glass with ultraviolet light, the ultraviolet light is converted into visible light.
- fluorescent glass is used in the UV sensor head, there is a problem that it is difficult to sufficiently improve the sensitivity of sensing.
- An object of the present invention is to provide a UV sensor head and a wavelength conversion member used in the UV sensor head, which can increase sensing sensitivity.
- a UV sensor head is a UV sensor head that converts ultraviolet light into visible light and guides the converted visible light to an optical fiber side, comprising: an inorganic matrix; and a wavelength conversion member including phosphor particles.
- the content of the phosphor particles in the wavelength conversion member is preferably 0.01% by volume or more and 20% by volume or less.
- the UV sensor head of the present invention has a first end and a second end facing each other, and a side surface connecting the first end and the second end, and the side surface has a notch.
- the wavelength converting member is accommodated in the tubular body, and the wavelength converting member is arranged so as to overlap with the cutout portion in a plan view. It is preferable that
- the The wavelength conversion member may have a projecting portion that projects further toward the first end than the notch in the length direction.
- the ratio of the length of the protruding portion of the wavelength conversion member to the notch portion (protruding portion/notch portion) in the length direction is 0.01 or more and 1 or less.
- a filter that transmits ultraviolet light and absorbs or reflects visible light is installed in the notch.
- the filter is preferably made of glass.
- the rod made of the wavelength conversion member extends from the second end of the cylindrical body. preferably inserted.
- a cover member closing the second end side of the tubular body is further provided, and the rod is attached to the cover member.
- the inorganic matrix is preferably a glass matrix.
- a wavelength conversion member for a UV sensor head is a wavelength conversion member used in a UV sensor head that converts ultraviolet light into visible light and guides the converted visible light to an optical fiber side. , an inorganic matrix, and phosphor particles dispersed in the inorganic matrix. Also in this case, the content of the phosphor particles in the wavelength conversion member is preferably 0.01% by volume or more and 20% by volume or less.
- the present invention it is possible to provide a UV sensor head and a wavelength conversion member used in the UV sensor head, which can enhance sensing sensitivity.
- FIG. 1 is a schematic side view showing a UV sensor using a UV sensor head according to one embodiment of the invention.
- FIG. 2 is a schematic plan view showing a UV sensor head according to one embodiment of the invention.
- FIG. 3 is a schematic cross-sectional view of a cylindrical body portion in the UV sensor head according to one embodiment of the invention.
- FIG. 4 is a schematic cross-sectional view of a cylindrical body portion in a UV sensor head according to another embodiment of the invention.
- FIG. 5 is a schematic perspective view showing each part of the UV sensor head according to one embodiment of the invention.
- FIG. 6 is a graph showing distribution spectra of light energies detected using the wavelength conversion members of Examples 1-9.
- FIG. 7 is a graph showing the distribution spectrum of light energy detected using the UV sensor head 1 and the UV sensor head 1A in Example 10.
- FIG. 1 is a schematic side view showing a UV sensor using a UV sensor head according to one embodiment of the invention.
- FIG. 2 is a schematic plan view showing a UV sensor head according to one embodiment of the invention.
- FIG. 3 is a schematic cross-sectional view of a cylindrical body portion in the UV sensor head according to one embodiment of the invention.
- FIG. 4 is a schematic cross-sectional view of a cylindrical body portion in a UV sensor head according to another embodiment of the invention.
- FIG. 5 is a schematic perspective view showing each part of the UV sensor head according to one embodiment of the present invention.
- the UV sensor head 1 is a sensor head used for the UV sensor 10.
- the UV sensor head 1 is irradiated with ultraviolet light (UV light).
- UV light ultraviolet light
- the ultraviolet light irradiated to the UV sensor head 1 is converted into visible light.
- the visible light converted by the UV sensor head 1 is guided to the detector 12 by the optical fiber 11 and monitored.
- the ultraviolet light irradiated to the UV sensor head 1 is converted into visible light and monitored by the detector 12 .
- the UV sensor head 1 includes a tubular body 2, a lid member 3, and a wavelength conversion member 4.
- the cylindrical body 2 has a substantially cylindrical shape.
- the shape of the tubular body 2 may be substantially square tubular, and is not particularly limited.
- the cylindrical body 2 can be made of metal, for example.
- the length of the tubular body 2 can be, for example, 1 mm or more and 50 mm or less.
- the inner diameter of the cylindrical body 2 can be set to 1 mm or more and 10 mm or less, for example.
- the tubular body 2 has a first end 2a and a second end 2b facing each other.
- the cylindrical body 2 also has a side surface 2c connecting the first end 2a and the second end 2b.
- a side surface 2c of the cylindrical body 2 is provided with a notch portion 2d.
- the first end 2a of the cylindrical body 2 is the end on the optical fiber 11 side.
- an optical fiber 11 is joined to the first end 2a of the cylindrical body 2 via a connector 11a shown in FIG.
- the connector 11a through which the optical fiber 11 is inserted and the cylindrical body 2 are joined by being fitted to each other.
- the optical fiber 11 may be joined to the tubular body 2 by other methods such as an adhesive agent or a screw structure, or may not be joined to the tubular body 2 .
- the connector 11a can be made of metal, for example.
- a gap is formed between the end face of the wavelength conversion member 4 and the end face of the optical fiber 11 .
- An antireflection film may be formed on the end face of the wavelength conversion member 4 and/or the end face of the optical fiber 11 . By doing so, the visible light generated by the wavelength conversion member 4 can be easily guided to the optical fiber 11 .
- a known dielectric multilayer film or the like can be used as the antireflection film.
- a refractive index matching agent layer having an intermediate refractive index between the end face of the wavelength conversion member 4 and the end face of the optical fiber 11 may be provided.
- a filter 5 which transmits ultraviolet light and absorbs or reflects visible light
- band pass filter may be installed in the notch 2d.
- the total light transmittance at a wavelength of 250 nm to 380 nm and a thickness of 1 mm is preferably 10% or more, more preferably 50% or more, and still more preferably 80% or more.
- the total light transmittance at a thickness of 1 mm in the wavelength range of 380 nm to 780 nm is preferably 50% or less, more preferably 25% or less, and even more preferably 10% or less.
- the total light transmittance at a thickness of 1 mm in the wavelength range of 400 nm to 700 nm is preferably 30% or less, more preferably 10% or less, and even more preferably 5% or less.
- the total light transmittance at a thickness of 1 mm in the wavelength range of 420 nm to 600 nm is preferably 10% or less, more preferably 5% or less, and even more preferably 1% or less.
- the filter 5 one made of glass (glass plate) can be used.
- the filter 5 may be made of an ultraviolet-transmitting visible-absorbing glass in which an element that absorbs visible light is contained in the glass.
- Elements that absorb visible light include Ni, Co, and Ti. These are usually included in the glass composition as components such as NiO, CoO, TiO2 . Among them, NiO and CoO are preferable because they absorb relatively little ultraviolet light and can absorb visible light without lowering the sensing sensitivity of the UV sensor head 1A.
- the total content (% by mass) of NiO, CoO and TiO 2 in the glass composition is preferably 1% to 25%, more preferably 3% to 20%, and still more preferably 5% to 15%. .
- the content of one of NiO, CoO and TiO 2 and the total amount of the two are preferably 1% to 25%, more preferably 3% to 20%, and still more preferably 5% to 15%. %.
- the filter 5 When the filter 5 is made of glass, its thickness is preferably 0.2 mm to 3.0 mm, more preferably 0.3 mm to 2.0 mm, still more preferably 0.4 mm to 1.0 mm. If the thickness of the filter 5 is too small, it tends to be difficult to obtain sufficient visible light absorption performance. Moreover, the mechanical strength of the filter 5 tends to be insufficient. On the other hand, if the thickness of the filter 5 is too large, it tends to be difficult to miniaturize the UV sensor head 1A.
- a dielectric multilayer film that reflects visible light (for example, a dielectric multilayer film formed on the surface of a glass plate) can also be used as the filter 5 .
- the dielectric multilayer film has a structure in which low refractive index dielectric layers with a relatively low refractive index and high refractive index dielectric layers with a relatively high refractive index are alternately laminated.
- the low refractive index dielectric layer can be formed of silicon oxide or the like, for example.
- the high refractive index dielectric layer can be formed of, for example, titanium oxide, niobium oxide, lanthanum oxide, tantalum oxide, zirconium oxide, and the like.
- the ultraviolet-transmitting visible-absorbing glass is less likely to cause such problems, and thus the desired band-pass function can be easily obtained.
- the ultraviolet transmitting visible absorbing glass and the dielectric multilayer film may be used in combination. In this case, the deterioration of the visible light absorption performance when the thickness of the ultraviolet-transmitting visible-absorbing glass is reduced can be compensated for by the dielectric multilayer film. can be achieved.
- the second end 2b of the cylindrical body 2 is closed with the cover member 3.
- the lid member 3 and the cylindrical body 2 are joined by being fitted to each other.
- the lid member 3 and the cylindrical body 2 may be joined by other methods such as an adhesive or a screw structure.
- the shape of the cover member 3 is substantially cylindrical.
- the shape of the lid member 3 is not particularly limited. Note that the lid member 3 can be made of metal, for example.
- a rod-shaped wavelength conversion member 4 is attached to the tip of the lid member 3 .
- the rod of the wavelength conversion member 4 is inserted from the second end 2b side of the tubular body 2 .
- the wavelength conversion member 4 includes an inorganic matrix and phosphor particles dispersed in the inorganic matrix.
- Such a wavelength conversion member 4 is housed inside the cylindrical body 2 and is arranged so as to overlap with the notch 2d in a plan view.
- the wavelength conversion member 4 is attached to the tip of the lid member 3 with an adhesive.
- the wavelength conversion member 4 may be attached to the tip of the lid member 3 by other methods, and is not particularly limited.
- the cover member 3 may not be provided, and the wavelength conversion member 4 may be arranged inside the cylindrical body 2 so as to overlap with the notch portion 2d in a plan view.
- the wavelength conversion member 4 is arranged so as to include the entire area in which the notch 2d is provided in plan view.
- the wavelength conversion member 4 may be arranged so as to at least partially overlap the area where the notch 2d is provided in plan view, but the notch 2d is provided as in the present embodiment. It is desirable that they are arranged so as to overlap all of the regions.
- the area of the notch portion 2d can be, for example, 0.1 mm 2 or more and 20 mm 2 or less.
- the wavelength conversion member 4 when the direction connecting the first end 2a and the second end 2b is defined as the length direction X, the wavelength conversion member 4 has a substantially cylindrical shape extending along the length direction X. has the shape of However, the shape of the wavelength conversion member 4 is not particularly limited, and may have a shape such as a substantially rectangular parallelepiped shape.
- the length of the wavelength conversion member 4 along the length direction X can be, for example, 0.2 mm or more and 5 mm or less.
- the diameter of the wavelength conversion member 4 can be, for example, 0.5 mm or more and 4 mm or less.
- the wavelength conversion member 4 is irradiated with ultraviolet light through the notch 2d.
- the wavelength conversion member 4 converts the ultraviolet light into visible light and guides it to the optical fiber 11 .
- the visible light guided to the optical fiber 11 is finally guided to the detector 12 and monitored.
- a feature of this embodiment is that the wavelength conversion member 4 that constitutes the UV sensor head 1 contains an inorganic matrix and phosphor particles dispersed in the inorganic matrix. As a result, the UV sensor head 1 can effectively increase the sensing sensitivity.
- fluorescent glass is attached to the sensor head of a UV sensor that converts ultraviolet light into visible light and senses the converted visible light by guiding it through an optical fiber. UV light was converted to visible light by irradiating with
- fluorescent glass which is doped with a fluorescent component in its composition, has little internal scattering, so the emission intensity is weak, and there is a problem that the sensitivity of sensing cannot be sufficiently increased.
- the amount of fluorescent components in the glass increases, vitrification becomes unstable, so the content of fluorescent components in the fluorescent glass cannot be increased sufficiently, and as a result, the sensitivity of sensing cannot be sufficiently improved. There's a problem.
- the wavelength conversion member 4 contains an inorganic matrix and phosphor particles dispersed in the inorganic matrix. can be increased, and as a result, the sensitivity of sensing can be effectively increased. Further, in the UV sensor head 1 of this embodiment, the sensitivity of sensing can be easily adjusted by adjusting the concentration of the phosphor particles.
- the content of the phosphor particles in the wavelength conversion member 4 is preferably 0.01% by volume or more, more preferably 0.1% by volume or more, still more preferably 0.25% by volume or more, and particularly The content is preferably 0.5% by volume or more, preferably 20% by volume or less, more preferably 15% by volume or less, and even more preferably 10% by volume or less.
- the content of the phosphor particles is at least the above lower limit, the emission intensity can be further increased, and the sensing sensitivity can be more effectively increased.
- the sensitivity of sensing can be enhanced more effectively. This point can be explained as follows.
- the content of phosphor particles contained in the wavelength conversion member 4 as shown in FIG. It may become difficult to be exposed to light. Further, since the wavelength conversion member 4 is a scatterer, the higher the concentration of the phosphor particles, the larger the scattering factor, and the wavelength-converted visible light may be easily scattered by other phosphor particles. be. On the other hand, when the content of the phosphor particles is reduced, the ultraviolet light easily reaches the inside of the wavelength conversion member 4 and is easily wavelength-converted. By optimizing the concentration of the phosphor particles in this way, wavelength conversion is facilitated near the cross-sectional center of the wavelength conversion member 4 . As a result, the visible light can be more easily guided to the optical fiber 11 side, and the sensitivity of sensing can be enhanced more effectively.
- the wavelength conversion member 4 has a protruding portion 4a that protrudes toward the first end portion 2a side from the notch portion 2d in the length direction X. ing.
- the ultraviolet light incident from the cutouts 2d and scattered in the direction of the optical fiber 11 in the inorganic matrix under the influence of the phosphor particles is absorbed into the fluorescence contained in the protrusions 4a.
- the body particles play a role of absorption and have the effect of suppressing the leakage of ultraviolet light to the optical fiber 11 side. This suppresses deterioration of the light-receiving element in the detector 12 due to receiving ultraviolet light, and as a result, it is possible to further effectively improve the reliability of sensing.
- the ratio (L2/L1) of the length L2 of the protrusion 4a to the length L1 of the notch 2d is preferably 0.001 or more, more preferably 0.01 or more. , more preferably 0.1 or more.
- L2/L1 is preferably 1 or less, more preferably 0.75 or less, and even more preferably 0.5 or less. In this way, visible light can be more easily guided to the optical fiber 11 side, and in addition to more effectively increasing the sensitivity of sensing, leakage of ultraviolet light can be suppressed. .
- the UV sensor head 1 of the present embodiment can effectively increase the sensitivity of sensing, even weak light can be detected without noise, and even minute deterioration of the ultraviolet light source can be confirmed. can.
- the wavelength conversion member used in the UV sensor head of the present invention such as the UV sensor head 1, will be described in detail below.
- the wavelength conversion member for a UV sensor head of the present invention (hereinafter sometimes simply referred to as "wavelength conversion member”) converts ultraviolet light into visible light and guides the converted visible light to the optical fiber side.
- the wavelength converting member includes an inorganic matrix and phosphor particles dispersed in the inorganic matrix. Such a wavelength conversion member can enhance sensing sensitivity when used in a UV sensor head.
- the total light transmittance at a wavelength of 250 nm to 280 nm and a thickness of 1 mm is not particularly limited, but is preferably 0.1% to 80%, more preferably 10% to 80%, and still more preferably 30% to 80%. %, particularly preferably 50% to 80%.
- the total light transmittance of the inorganic matrix is too low, ultraviolet light will be excessively absorbed by the inorganic matrix, making it difficult to obtain the desired emission intensity. On the other hand, if the total light transmittance of the inorganic matrix is too high, the ultraviolet excitation light that has not undergone wavelength conversion tends to leak outside.
- the inorganic matrix is not particularly limited, and a glass matrix, a ceramic matrix, or the like can be used.
- the glass matrix for example, SiO 2 30% to 85%, B 2 O 3 0% to 35%, Al 2 O 3 0% to 25%, Li 2 O + Na 2 O + K 2 O 0% to 10% in terms of mol%. %, MgO+CaO+SrO+BaO 0% to 45%.
- % means "mol %” unless otherwise specified.
- SiO2 is a component that forms a glass network, and has the effect of improving ultraviolet transmittance and devitrification resistance. It also has the effect of improving weather resistance and mechanical strength.
- the content of SiO 2 is preferably 30% to 85%, more preferably 40% to 80%, even more preferably 50% to 75%, particularly preferably 55% to 70%. If the content of SiO 2 is too small, it becomes difficult to obtain the above effects. On the other hand, if the content of SiO 2 is too high, the sintering temperature becomes high, and the phosphor particles tend to deteriorate during the production of the wavelength conversion member. Moreover, the fluidity of the glass powder during firing is poor, and air bubbles tend to remain in the glass matrix after firing. Furthermore, the ultraviolet transmittance may become too high.
- B 2 O 3 is a component that lowers the melting temperature and improves meltability. In addition, B 2 O 3 does not reduce the ultraviolet transmittance so much, and has the effect of suppressing ultraviolet absorption by alkali metal components and alkaline earth metal components.
- the content of B 2 O 3 is preferably 0% to 35%, more preferably 0% to 20%, still more preferably 1% to 15%, still more preferably 2% to 10%, particularly preferably 3% to 8%, most preferably 4% to 7%. If the content of B 2 O 3 is too high, the weather resistance tends to deteriorate. In addition, the ultraviolet transmittance may become too high.
- Al 2 O 3 is a component that improves weather resistance and mechanical strength. Further, like B 2 O 3 , it has the effect of suppressing ultraviolet absorption by alkali metal components and alkaline earth metal components.
- the content of Al 2 O 3 is preferably 0% to 25%, more preferably 0.1% to 20%, even more preferably 1% to 10%, particularly preferably 2% to 8%. If the Al 2 O 3 content is too high, the meltability tends to decrease. In addition, the ultraviolet transmittance may become too high.
- Li 2 O, Na 2 O and K 2 O are components that lower the melting temperature to improve meltability and lower the softening point.
- the content of Li 2 O+Na 2 O+K 2 O is preferably 0% to 10%, more preferably 0% to 5%, even more preferably 0% to 3%, even more preferably 0% to 2%, especially It is preferably 0% to 1%, and most preferably not contained.
- each component Li 2 O, Na 2 O and K 2 O is preferably 0% to 7%, more preferably 0% to 5%, still more preferably 0% to 3%, and further preferably It is preferably 0% to 2%, particularly preferably 0% to 1%, and most preferably not contained.
- the content (total amount) of Li 2 O, Na 2 O and K 2 O is preferably 0.1% to 7%, more preferably 1% to 6.5%, further preferably 2% to 6%.
- the contents of Li 2 O, Na 2 O and K 2 O are each preferably 0% to 7%, more preferably 0.1% to 5%, still more preferably 0.5% to 4%, Especially preferred is 1% to 3%.
- Li 2 O, Na 2 O and K 2 O are preferably used in combination of two or more, particularly three.
- the content of Li 2 O, Na 2 O and K 2 O is preferably 0.1% or more, more preferably 0.5% or more, and particularly preferably 1% or more.
- the softening point can be efficiently lowered by the mixed alkali effect.
- the content of each alkali oxide is equal, the mixed alkali effect can be easily obtained.
- MgO, CaO, SrO and BaO are components that lower the melting temperature, improve the meltability, and lower the softening point. In addition, unlike the alkali metal component, these components do not affect the deterioration of the emission intensity of the wavelength conversion member over time.
- the content of MgO+CaO+SrO+BaO is preferably 0% to 45%, more preferably 1% to 45%, still more preferably 5% to 40%, still more preferably 10% to 35%, particularly preferably 20% to 33%. be. If the content of MgO+CaO+SrO+BaO is too low, the softening point will be difficult to lower.
- the content of each of MgO, CaO, SrO and BaO is preferably 0% to 35%, more preferably 0.1% to 33%, still more preferably 1% to 30%. If the content of these components is too high, the weather resistance tends to decrease.
- ZnO is a component that lowers the melting temperature and improves meltability.
- the content of ZnO is preferably 0% to 15%, more preferably 0% to 10%, still more preferably 0% to 5%, particularly preferably 0.1% to 4.5%, most preferably 1%. ⁇ 4%. If the ZnO content is too high, the weather resistance tends to decrease. In addition, there is a tendency for the phase to separate and the transmittance to decrease, resulting in a decrease in the emission intensity.
- CeO 2 is a component that reduces the UV transmittance of the glass matrix. By containing CeO 2 , it is possible to suppress the ultraviolet excitation light from leaking to the outside of the wavelength conversion member. In addition, CeO 2 has the effect of suppressing a decrease in emission intensity over time due to Li 2 O, Na 2 O, or K 2 O.
- the CeO 2 content is preferably 0% to 10%, more preferably 0.001% to 10%, even more preferably 0.001% to 5%, even more preferably 0.01% to 3%, particularly preferably is between 0.05% and 1%, most preferably between 0.1% and 0.5%. If the content of CeO 2 is too high, the visible light transmittance of the glass matrix tends to decrease and the emission intensity tends to decrease.
- various components can be contained within a range that does not impair the effects of the present invention.
- P2O5 , La2O3 , Ta2O5 , TeO2 , TiO2 , Nb2O5 , Gd2O3 , Y2O3 , Sb2O3 , SnO2 , Bi2O3 , As 2 O 3 and ZrO 2 respectively, preferably 15% or less, more preferably 10% or less, still more preferably 5% or less, and a total amount of 30% or less.
- F can also be contained.
- F has the effect of lowering the softening point, by containing it instead of the alkali metal component which is one of the causes of the formation of coloring centers, it is possible to prevent the emission intensity from decreasing over time while maintaining a low softening point. can be suppressed.
- the content of F is preferably 0% to 10%, more preferably 0% to 8%, still more preferably 0.1% to 5% in terms of anion %.
- the softening point of the glass matrix is preferably 600°C to 1100°C, more preferably 630°C to 1050°C, still more preferably 650°C to 1000°C. If the softening point of the glass matrix is too low, mechanical strength and weather resistance tend to decrease. On the other hand, if the softening point of the glass matrix is too high, the sintering temperature will also be high, and the phosphor particles will easily deteriorate in the firing process during production.
- the average particle diameter D50 of the glass powder as the raw material of the glass matrix is preferably 100 ⁇ m or less, more preferably 50 ⁇ m or less, still more preferably 20 ⁇ m or less, and particularly preferably 10 ⁇ m or less. If the average particle diameter D50 of the glass powder is too large, bubbles tend to remain in the glass matrix after firing in the resulting wavelength conversion member, which may reduce the light extraction efficiency of the wavelength conversion member.
- the lower limit of the average particle diameter D50 of the glass powder is not particularly limited, it is preferably 0.1 ⁇ m or more, more preferably 1 ⁇ m or more, and still more preferably 2 ⁇ m or more in consideration of production cost and handleability.
- the average particle size means the average particle size D50 measured by a laser diffraction particle size distribution analyzer.
- Ceramics forming the ceramics matrix include Al 2 O 3 , MgO, and AlN.
- the phosphor particles are not particularly limited, and preferably emit fluorescence in the visible range (for example, wavelengths of 500 nm to 600 nm) when irradiated with excitation light having a wavelength of 200 nm to 380 nm.
- phosphor particles include, for example, oxide phosphors, nitride phosphors, oxynitride phosphors, chloride phosphors, acid chloride phosphors, halide phosphors, aluminate phosphors, halophosphate phosphors, and the like.
- Garnet phosphors especially Lu 3 Al 5 O 12 :Ce, and sialon phosphors, especially Si 6-z Al z O z N 8-z : Eu (0 ⁇ z ⁇ 4.2) ( ⁇ -SiAlON: Eu) or the like is preferable because it can efficiently convert excitation light with a wavelength of 200 nm to 380 nm into fluorescence in the visible region.
- phosphor particles that do not have an excitation band in the visible region only ultraviolet light can be converted. In that case, only ultraviolet light can be converted even in an environment in which visible light and ultraviolet light are irradiated, so that the UV sensor head 1 that detects only ultraviolet light can be provided more reliably.
- the average particle size of the phosphor particles is preferably 1 ⁇ m or more, more preferably 5 ⁇ m or more. If the average particle size of the phosphor particles is too small, the quantum efficiency tends to be poor and the emission intensity tends to decrease. On the other hand, if the average particle diameter of the phosphor particles is too large, the dispersion state in the inorganic matrix deteriorates, and the emission color tends to be non-uniform. Therefore, the average particle size of the phosphor particles is preferably 50 ⁇ m or less, more preferably 25 ⁇ m or less.
- a mixture containing glass powder which is a raw material of a glass matrix, and phosphor particles (phosphor powder) is fired, and the resulting fired body is cut into a desired size. It can be manufactured by
- the firing temperature of the mixed powder of the glass powder and the phosphor powder is preferably within ⁇ 200°C of the softening point of the glass powder, and particularly preferably within ⁇ 150°C of the softening point of the glass powder. If the firing temperature is too low, the glass powder will not flow sufficiently, making it difficult to obtain a dense sintered body. On the other hand, if the firing temperature is too high, the phosphor component may be thermally deteriorated and the emission intensity may be lowered.
- Firing is preferably performed in a reduced pressure atmosphere.
- the atmosphere during firing is preferably less than 1.013 ⁇ 10 5 Pa, more preferably 1000 Pa or less, and even more preferably 400 Pa or less.
- the entire firing process may be performed in a reduced-pressure atmosphere, or, for example, only the firing process is performed in a reduced-pressure atmosphere, and the temperature rising process and temperature-lowering process before and after it are performed in an atmosphere other than a reduced pressure atmosphere (for example, under atmospheric pressure). You can go with
- the glass powder serving as the glass matrix has a composition of 68% SiO 2 , 4% Al 2 O 3 , 19% B 2 O 3 , 7% Na 2 O, 1% K 2 O, and 1% F 2 in mass %.
- a glass powder having a softening point of 700° C., a thermal expansion coefficient of 41.9 ⁇ 10 ⁇ 7 /° C., and an average particle size of 2.5 ⁇ m was prepared.
- La 3 Si 6 N 11 :Ce 3+ phosphor particles (fluorescence peak wavelength: 538 nm) were mixed with the prepared glass powder and fired at a temperature of 100° C. plus the softening point of the glass to obtain a sintered body.
- the phosphor particles were mixed so that the content in the wavelength conversion member was 0.1% by volume.
- a cylindrical wavelength conversion member having a length of 3 mm and a diameter of ⁇ 2.0 mm was obtained.
- Example 2 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 0.5% by volume.
- Example 3 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 1.0% by volume.
- Example 4 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 1.5% by volume.
- Example 5 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 3.5% by volume.
- Example 6 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 5.0% by volume.
- Example 7 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 10.0% by volume.
- Example 8 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 15.0% by volume.
- Example 9 A wavelength conversion member was obtained in the same manner as in Example 1, except that the phosphor particles were mixed so that the content in the wavelength conversion member was 20.0% by volume.
- the wavelength conversion members obtained in Examples 1 to 9 were attached to the cover member 3 as the wavelength conversion member 4 shown in FIGS. 2 and 3, and the UV sensor head 1 was obtained.
- the obtained UV sensor head 1 was irradiated with ultraviolet light using an ultraviolet light source (wavelength: 365 nm).
- irradiation of ultraviolet light was performed in a dark room.
- the converted visible light was guided through an optical fiber 11 to a spectroscope (manufactured by Ocean Photonics, product number “USB-2000+”) and detected.
- FIG. 6 is a graph showing distribution spectra of light energies detected using the wavelength conversion members of Examples 1-9.
- the vertical axis in FIG. 6 is relative light energy (au), and the horizontal axis is wavelength.
- the UV sensor head using the wavelength conversion members obtained in Examples 1 to 9 has enhanced sensing sensitivity.
- the concentration of phosphor particles is in the range of 0.1 volume % to 10.0 volume %, it can be seen that the sensing sensitivity is effectively enhanced.
- Example 10 A wavelength conversion member produced in the same manner as in Example 4 was attached to the cover member 3 as the wavelength conversion member 4 shown in FIGS. 2 and 3 to obtain the UV sensor head 1 .
- a UV sensor head 1A shown in FIG. 4 was obtained in which a filter 5 that transmits ultraviolet light and absorbs visible light was installed in the notch 2d of the UV sensor head 1 fabricated in the same manner.
- a glass plate with a thickness of 0.5 mm made of phosphate glass containing 11% by mass of NiO and 4.5% by mass of CoO was used.
- the obtained UV sensor heads 1 and 1A were irradiated with ultraviolet light using an ultraviolet light source (wavelength: 365 nm).
- the irradiation with ultraviolet light was performed under a fluorescent lamp. Converted light by the wavelength conversion member guided to the optical fiber 11 and ambient light from the fluorescent lamp were detected by a spectroscope (manufactured by Ocean Photonics, product number “USB-2000+”).
- FIG. 7 is a graph showing the distribution spectrum of light energy detected using the UV sensor heads 1 and 1A.
- the vertical axis in FIG. 7 is relative light energy (au), and the horizontal axis is wavelength.
- the UV sensor head 1 in which the filter 5 is not installed in the notch 2d the fluorescence intensity increases and Multiple fluorescence peaks derived from fluorescent lamps were detected as noise.
- the UV sensor head 1A in which the filter 5 was installed in the notch 2d hardly detected such noise, and could accurately detect the ultraviolet light from the ultraviolet light source.
- a filter in the notch of the UV sensor head, it is possible to provide a UV sensor head that detects only predetermined ultraviolet light even when used under a visible light source such as a fluorescent lamp. I was able to
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Description
図1は、本発明の一実施形態に係るUVセンサヘッドを用いたUVセンサを示す模式的側面図である。図2は、本発明の一実施形態に係るUVセンサヘッドを示す模式的平面図である。図3は、本発明の一実施形態に係るUVセンサヘッドにおける筒状体部分の模式的断面図である。図4は、本発明の他の実施形態に係るUVセンサヘッドにおける筒状体部分の模式的断面図である。また、図5は、本発明の一実施形態に係るUVセンサヘッドの各部品を示す模式的斜視図である。
本発明のUVセンサヘッド用波長変換部材(以下、単に「波長変換部材」とする場合がある)は、紫外光を可視光に変換し、該変換された可視光を光ファイバ側に導光する、UVセンサヘッドに用いられる、波長変換部材である。波長変換部材は、無機マトリクスと、無機マトリクス中に分散している蛍光体粒子とを含む。このような波長変換部材は、UVセンサヘッドに用いたときに、センシングの感度を高めることができる。
ガラスマトリクスとなるガラス粉末として、質量%で、SiO2 68%、Al2O3 4%、B2O3 19%、Na2O 7%、K2O 1%、F2 1%の組成を有するガラス粉末(軟化点700℃、熱膨張係数:41.9×10-7/℃、平均粒子径:2.5μm)を準備した。
波長変換部材中における含有量が、0.5体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、1.0体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、1.5体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、3.5体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、5.0体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、10.0体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、15.0体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
波長変換部材中における含有量が、20.0体積%となるように蛍光体粒子を混合したこと以外は、実施例1と同様にして波長変換部材を得た。
実施例1~9で得られた波長変換部材を、図2及び図3に示す波長変換部材4として蓋材3に取り付け、UVセンサヘッド1を得た。得られたUVセンサヘッド1に、紫外光源(波長:365nm)を用いて、紫外光を照射した。なお、紫外光の照射は暗室で行った。変換された可視光を光ファイバ11により分光器(オーシャンフォトニクス社製、品番「USB-2000+」)へ導光し、検出した。
実施例4と同様にして作製した波長変換部材を、図2及び図3に示す波長変換部材4として蓋材3に取り付け、UVセンサヘッド1を得た。それとは別に、同様にして作製したUVセンサヘッド1の切り欠き部2dに、紫外光を透過しかつ可視光を吸収するフィルタ5を設置した、図4に示すUVセンサヘッド1Aを得た。フィルタ5としては、質量%で、NiOを11%、CoOを4.5%含有するリン酸塩系ガラスからなる、厚み0.5mmのガラス板を使用した。
得られたUVセンサヘッド1及び1Aに、紫外光源(波長:365nm)を用いて、紫外光を照射した。なお、紫外光の照射は蛍光灯下で行った。光ファイバ11へ導光された波長変換部材による変換光及び、蛍光灯の外乱光を分光器(オーシャンフォトニクス社製、品番「USB-2000+」)で検出した。
2…筒状体
2a…第1の端部
2b…第2の端部
2c…側面
2d…切り欠き部
3…蓋材
4…波長変換部材
4a…突出部
5…フィルタ
10…UVセンサ
11…光ファイバ
11a…コネクタ
12…検出器
Claims (12)
- 紫外光を可視光に変換し、該変換された可視光を光ファイバ側に導光する、UVセンサヘッドであって、
無機マトリクスと、前記無機マトリクス中に分散している蛍光体粒子とを含む、波長変換部材を備える、UVセンサヘッド。 - 前記波長変換部材中における前記蛍光体粒子の含有量が、0.01体積%以上、20体積%以下である、請求項1に記載のUVセンサヘッド。
- 対向している第1の端部及び第2の端部と、該第1の端部及び第2の端部を結ぶ側面とを有し、該側面に切り欠き部が設けられている、筒状体をさらに備え、
前記筒状体の内部に前記波長変換部材が収納されており、
前記波長変換部材は、平面視において、前記切り欠き部と重なるように配置されている、請求項1又は2に記載のUVセンサヘッド。 - 前記第1の端部及び第2の端部を結ぶ方向を長さ方向とし、前記第1の端部が前記光ファイバ側に設けられる端部であるとしたときに、
前記波長変換部材は、前記長さ方向において、前記切り欠き部よりも前記第1の端部側に突出している突出部を有する、請求項3に記載のUVセンサヘッド。 - 前記長さ方向において、前記切り欠き部に対する前記波長変換部材の突出部の長さの比(突出部/切り欠き部)が、0.01以上、1以下である、請求項4に記載のUVセンサヘッド。
- 前記切り欠き部に、紫外光を透過し、かつ可視光を吸収又は反射するフィルタが設置されている、請求項3に記載のUVセンサヘッド。
- 前記フィルタは、ガラスからなる、請求項6に記載のUVセンサヘッド。
- 前記第1の端部が前記光ファイバ側に設けられる端部であるとしたときに、
前記波長変換部材からなるロッドが、前記筒状体の前記第2の端部側から挿入されている、請求項3に記載のUVセンサヘッド。 - 前記筒状体の前記第2の端部側を塞いでいる、蓋材をさらに備え、
前記蓋材に前記ロッドが取り付けられている、請求項8に記載のUVセンサヘッド。 - 前記無機マトリクスが、ガラスマトリクスである、請求項1又は2に記載のUVセンサヘッド。
- 紫外光を可視光に変換し、該変換された可視光を光ファイバ側に導光する、UVセンサヘッドに用いられる、波長変換部材であって、
無機マトリクスと、前記無機マトリクス中に分散している蛍光体粒子とを含む、UVセンサヘッド用波長変換部材。 - 前記波長変換部材中における前記蛍光体粒子の含有量が、0.01体積%以上、20体積%以下である、請求項11に記載のUVセンサヘッド用波長変換部材。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237024142A KR20240026122A (ko) | 2021-07-05 | 2022-06-21 | Uv 센서 헤드 및 uv 센서 헤드용 파장 변환 부재 |
CN202280030700.8A CN117203506A (zh) | 2021-07-05 | 2022-06-21 | Uv传感器感测头和uv传感器感测头用波长转换部件 |
EP22837467.4A EP4368953A1 (en) | 2021-07-05 | 2022-06-21 | Uv sensor head and wavelength conversion member for uv sensor head |
JP2023533516A JPWO2023282050A1 (ja) | 2021-07-05 | 2022-06-21 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-111540 | 2021-07-05 | ||
JP2021111540 | 2021-07-05 | ||
JP2021193143 | 2021-11-29 | ||
JP2021-193143 | 2021-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023282050A1 true WO2023282050A1 (ja) | 2023-01-12 |
Family
ID=84800271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/024662 WO2023282050A1 (ja) | 2021-07-05 | 2022-06-21 | Uvセンサヘッド及びuvセンサヘッド用波長変換部材 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4368953A1 (ja) |
JP (1) | JPWO2023282050A1 (ja) |
KR (1) | KR20240026122A (ja) |
TW (1) | TW202317946A (ja) |
WO (1) | WO2023282050A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000011440A1 (fr) | 1998-08-20 | 2000-03-02 | Omron Corporation | Detecteur ultraviolet |
JP2000258247A (ja) * | 1999-03-11 | 2000-09-22 | Omron Corp | 紫外線検出器 |
JP2001021413A (ja) * | 1999-07-09 | 2001-01-26 | Chiyoda Kohan Co Ltd | 紫外線照度計 |
WO2017159696A1 (ja) * | 2016-03-18 | 2017-09-21 | 株式会社小糸製作所 | 蛍光部材および発光モジュール |
JP2020045255A (ja) * | 2018-09-18 | 2020-03-26 | 日本電気硝子株式会社 | 波長変換部材用原料粉末 |
-
2022
- 2022-06-21 KR KR1020237024142A patent/KR20240026122A/ko unknown
- 2022-06-21 EP EP22837467.4A patent/EP4368953A1/en active Pending
- 2022-06-21 WO PCT/JP2022/024662 patent/WO2023282050A1/ja active Application Filing
- 2022-06-21 JP JP2023533516A patent/JPWO2023282050A1/ja active Pending
- 2022-06-30 TW TW111124548A patent/TW202317946A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000011440A1 (fr) | 1998-08-20 | 2000-03-02 | Omron Corporation | Detecteur ultraviolet |
JP2000258247A (ja) * | 1999-03-11 | 2000-09-22 | Omron Corp | 紫外線検出器 |
JP2001021413A (ja) * | 1999-07-09 | 2001-01-26 | Chiyoda Kohan Co Ltd | 紫外線照度計 |
WO2017159696A1 (ja) * | 2016-03-18 | 2017-09-21 | 株式会社小糸製作所 | 蛍光部材および発光モジュール |
JP2020045255A (ja) * | 2018-09-18 | 2020-03-26 | 日本電気硝子株式会社 | 波長変換部材用原料粉末 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2023282050A1 (ja) | 2023-01-12 |
KR20240026122A (ko) | 2024-02-27 |
EP4368953A1 (en) | 2024-05-15 |
TW202317946A (zh) | 2023-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2602537B1 (en) | Light source device | |
JP6241517B2 (ja) | 波長変換部材、発光デバイス及び波長変換部材の製造方法 | |
EP3469423B1 (en) | Target assembly with glass-bonded wavelength converter | |
KR102271648B1 (ko) | 파장 변환 부재 및 그것을 사용하여 이루어지는 발광 디바이스 | |
JP5757238B2 (ja) | 蛍光体分散ガラス及びその製造方法 | |
KR102422065B1 (ko) | 파장 변환 부재 및 그것을 사용하여 이루어지는 발광 디바이스 | |
KR20220104069A (ko) | 파장 변환 부재 및 그것을 사용하여 이루어지는 발광 디바이스 | |
US20200243726A1 (en) | Wavelength conversion member and light emitting device | |
TW201726571A (zh) | 波長轉換構件及其製造方法 | |
WO2023282050A1 (ja) | Uvセンサヘッド及びuvセンサヘッド用波長変換部材 | |
US6583551B2 (en) | Low-pressure mercury vapor discharge lamp and compact fluorescent lamp | |
CN109196738B (zh) | 光转换设备 | |
TWI757521B (zh) | 波長轉換構件及發光裝置 | |
CN117203506A (zh) | Uv传感器感测头和uv传感器感测头用波长转换部件 | |
JP7460966B2 (ja) | 波長変換部材及び発光デバイス | |
KR102621944B1 (ko) | 파장 변환 부재 및 발광 장치 | |
JP2023076144A (ja) | 波長変換部材及びその使用方法 | |
WO2020189338A1 (ja) | 波長変換部材及びその製造方法、並びに発光装置 |
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: 22837467 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2023533516 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280030700.8 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022837467 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022837467 Country of ref document: EP Effective date: 20240205 |