CN117597612A - Optical filter - Google Patents
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- CN117597612A CN117597612A CN202280046886.6A CN202280046886A CN117597612A CN 117597612 A CN117597612 A CN 117597612A CN 202280046886 A CN202280046886 A CN 202280046886A CN 117597612 A CN117597612 A CN 117597612A
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- CN
- China
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- light
- carbon atoms
- group
- wavelength
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- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000003287 optical effect Effects 0.000 title claims description 40
- 238000010521 absorption reaction Methods 0.000 claims abstract description 56
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 44
- 239000011147 inorganic material Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 125000004432 carbon atom Chemical group C* 0.000 claims description 135
- 239000010410 layer Substances 0.000 claims description 108
- 239000000049 pigment Substances 0.000 claims description 77
- 238000002834 transmittance Methods 0.000 claims description 74
- 125000000217 alkyl group Chemical group 0.000 claims description 59
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 46
- -1 azomethines Chemical class 0.000 claims description 39
- 125000001424 substituent group Chemical group 0.000 claims description 34
- 239000011241 protective layer Substances 0.000 claims description 31
- 125000003545 alkoxy group Chemical group 0.000 claims description 22
- 125000005843 halogen group Chemical group 0.000 claims description 19
- 125000000623 heterocyclic group Chemical group 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 15
- 125000003118 aryl group Chemical group 0.000 claims description 14
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 11
- 101001106523 Homo sapiens Regulator of G-protein signaling 1 Proteins 0.000 claims description 9
- 102100021269 Regulator of G-protein signaling 1 Human genes 0.000 claims description 9
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 9
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 9
- 125000004423 acyloxy group Chemical group 0.000 claims description 8
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical class [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 claims description 7
- IHXWECHPYNPJRR-UHFFFAOYSA-N 3-hydroxycyclobut-2-en-1-one Chemical compound OC1=CC(=O)C1 IHXWECHPYNPJRR-UHFFFAOYSA-N 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 5
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical group C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 claims description 4
- 150000001565 benzotriazoles Chemical class 0.000 claims description 4
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920005668 polycarbonate resin Polymers 0.000 claims description 4
- 239000004431 polycarbonate resin Substances 0.000 claims description 4
- 229920001225 polyester resin Polymers 0.000 claims description 4
- 239000004645 polyester resin Substances 0.000 claims description 4
- 239000009719 polyimide resin Substances 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 3
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 3
- 150000002475 indoles Chemical class 0.000 claims description 3
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 3
- 150000003918 triazines Chemical class 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 6
- 150000001875 compounds Chemical class 0.000 description 86
- 239000000975 dye Substances 0.000 description 42
- 239000011347 resin Substances 0.000 description 26
- 229920005989 resin Polymers 0.000 description 26
- 230000003595 spectral effect Effects 0.000 description 25
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- 150000002430 hydrocarbons Chemical group 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 230000004048 modification Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 125000001153 fluoro group Chemical group F* 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 125000005529 alkyleneoxy group Chemical group 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 125000005605 benzo group Chemical group 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007539 photo-oxidation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007363 ring formation reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- HOPSCVCBEOCPJZ-UHFFFAOYSA-N carboxymethyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC(O)=O HOPSCVCBEOCPJZ-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 125000003709 fluoroalkyl group Chemical group 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 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 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical class [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- PWEBUXCTKOWPCW-UHFFFAOYSA-N squaric acid Chemical compound OC1=C(O)C(=O)C1=O PWEBUXCTKOWPCW-UHFFFAOYSA-N 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 102100031650 C-X-C chemokine receptor type 4 Human genes 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- 101000922348 Homo sapiens C-X-C chemokine receptor type 4 Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229930192627 Naphthoquinone Natural products 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical class C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Natural products C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- XJHABGPPCLHLLV-UHFFFAOYSA-N benzo[de]isoquinoline-1,3-dione Chemical class C1=CC(C(=O)NC2=O)=C3C2=CC=CC3=C1 XJHABGPPCLHLLV-UHFFFAOYSA-N 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- RSAZYXZUJROYKR-UHFFFAOYSA-N indophenol Chemical class C1=CC(O)=CC=C1N=C1C=CC(=O)C=C1 RSAZYXZUJROYKR-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- LKKPNUDVOYAOBB-UHFFFAOYSA-N naphthalocyanine Chemical class N1C(N=C2C3=CC4=CC=CC=C4C=C3C(N=C3C4=CC5=CC=CC=C5C=C4C(=N4)N3)=N2)=C(C=C2C(C=CC=C2)=C2)C2=C1N=C1C2=CC3=CC=CC=C3C=C2C4=N1 LKKPNUDVOYAOBB-UHFFFAOYSA-N 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 150000004893 oxazines Chemical class 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- AUONHKJOIZSQGR-UHFFFAOYSA-N oxophosphane Chemical compound P=O AUONHKJOIZSQGR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 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
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 125000005506 phthalide group Chemical class 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 150000004291 polyenes Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- BYMUNNMMXKDFEZ-UHFFFAOYSA-K trifluorolanthanum Chemical compound F[La](F)F BYMUNNMMXKDFEZ-UHFFFAOYSA-K 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/10—The polymethine chain containing an even number of >CH- groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B57/00—Other synthetic dyes of known constitution
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/006—Preparation of organic pigments
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Optical Filters (AREA)
- Laminated Bodies (AREA)
Abstract
In one embodiment of the filter according to the present invention, the filter includes a transparent substrate having a first main surface and a first light absorbing layer provided on the first main surface side of the transparent substrate, wherein the first light absorbing layer includes an ultraviolet absorbing dye having a maximum absorption wavelength in a wavelength range of 300nm to 430nm and having a molecular weight of 2000 or less, and an inorganic material.
Description
Technical Field
The present invention relates to a filter.
Background
Imaging devices such as digital cameras, digital video cameras, and cellular phones are provided with solid-state imaging elements (CCD, CMOS, etc.) for sensing persons, scenes, and the like. The spectral sensitivity of the solid-state imaging element ranges from the ultraviolet wavelength region to the near infrared wavelength region, whereas the human visual sensitivity is only in the visible wavelength region. In order to bring the spectral sensitivity of the solid-state imaging element close to the visual sensitivity of a person, a filter is disposed on the subject side of the solid-state imaging element.
In general, such a filter is configured by providing a light absorbing layer that shields ultraviolet rays or near infrared rays on a transparent substrate. For example, patent document 1 discloses an ultraviolet cut filter formed by adding a polyene substituted with aromatic hydrocarbon at both ends as an ultraviolet absorber to a transparent resin material.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 4-114042
Disclosure of Invention
Problems to be solved by the invention
In recent years, particularly with the increase in performance of imaging devices mounted in smart phones, there has been a demand for optical filters having excellent light resistance.
However, in the ultraviolet cut filter of patent document 1, since the ultraviolet absorber is contained in the resin layer, there is a possibility that the ultraviolet absorber reacts with hydroxyl groups in the resin due to sunlight or indoor light, photo-oxidation occurs, and deterioration occurs. Therefore, the ultraviolet cut filter of patent document 1 may have insufficient light resistance.
An object of one embodiment of the present invention is to provide a filter having excellent light resistance and ultraviolet shielding characteristics.
Means for solving the problems
In one embodiment of the filter according to the present invention, the filter includes a transparent substrate having a first main surface and a first light absorbing layer provided on the first main surface side of the transparent substrate, wherein the first light absorbing layer includes an ultraviolet absorbing dye having a maximum absorption wavelength in a wavelength range of 300nm to 430nm and having a molecular weight of 2000 or less, and an inorganic material.
Effects of the invention
One embodiment of the present invention can provide a filter having excellent light resistance and ultraviolet shielding characteristics.
Drawings
Fig. 1 is a schematic view of a cross section of a filter according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a first modification of the filter according to the embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a second modification of the filter according to the embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a third modification of the filter according to the embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a fourth modification of the filter according to the embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of a fifth modification of the filter according to the embodiment of the present invention.
Fig. 7 is a graph showing spectral transmittance curves before and after a light resistance test of the filter in table example 1.
Fig. 8 is a graph showing spectral transmittance curves before and after the light resistance test of the filter in example 2.
Fig. 9 is a graph showing spectral transmittance curves before and after the light resistance test of the filter in example 3.
Fig. 10 is a graph showing a spectral transmittance curve of the filter in example 4.
Fig. 11 is a graph showing a spectral transmittance curve of the filter in example 5.
Fig. 12 is a graph showing a spectral transmittance curve of the filter in example 6.
Fig. 13 is a graph showing spectral transmittance curves before and after a light resistance test of the filter in example 7.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail.
A filter according to an embodiment will be described. Fig. 1 is a schematic view of a cross section of a filter according to an embodiment of the present invention. As shown in fig. 1, the optical filter 10 has a transparent substrate 1 and a first light absorbing layer 2 provided on one main surface (first main surface) of the transparent substrate 1.
[ transparent substrate ]
The transparent substrate 1 may be made of any material as long as it is transparent to visible light (high transmittance). For example, the transparent substrate 1 may be composed of glass (white glass, near infrared ray absorbing glass, or the like) or resin.
The thickness of the transparent base material 1 is also determined by the material constituting the transparent base material 1, but is preferably 0.03mm to 5mm, and from the viewpoint of thickness reduction, 0.05mm to 1mm is preferable.
[ first light-absorbing layer ]
The first light absorbing layer 2 is a layer that absorbs ultraviolet light. The first light-absorbing layer 2 is a layer containing an ultraviolet-absorbing pigment (a) that absorbs ultraviolet light and an inorganic material (B), and as a typical example, the first light-absorbing layer 2 is a layer formed by dispersing the ultraviolet-absorbing pigment (a) in the inorganic material (B). In other words, the first light absorbing layer 2 is a layer formed by mixing the inorganic material (B) and the ultraviolet absorbing pigment (a). The infrared absorbing pigment (a) may be uniformly dispersed in the inorganic material (B), or may be different in concentration in the orthogonal direction of the first main surface of the transparent substrate 1 (the thickness direction of the transparent substrate 1).
(ultraviolet light absorbing pigment)
The ultraviolet absorbing pigment (A) has a maximum absorption wavelength (hereinafter referred to as "lambda") in the wavelength range of 300nm to 430nm max ") and ultraviolet absorbing pigment having a molecular weight of 2000 or less, is not particularly limited. Lambda is the sum of the values of lambda max An absorption peak having an absorption peak (hereinafter referred to as "lambda max Absorption peak of (c). The absorption curve of the ultraviolet absorbing pigment (A) is preferably not limited to that shown inHas lambda in the wavelength range of 300nm to 430nm max In addition, absorption in the visible light region is small, and lambda max The slope of the absorption peak on the visible side of (2) is gentle. Furthermore lambda max The absorption peak of (2) is preferably steep on the long wavelength side.
Lambda of ultraviolet light absorbing pigment (A) max The detection can be performed by using an absorption curve measured by, for example, an ultraviolet-visible near-infrared spectrophotometer (model: V770, manufactured by Japanese Spectrophotometer) using a solution obtained by dissolving the ultraviolet-absorbing pigment (A) in methylene chloride. In the present specification, unless otherwise specified, measurement of the absorption curve is performed under the condition of an incident angle of 0 °.
The ultraviolet absorbing pigment (a) has a maximum absorption wavelength in a wavelength range of 300nm to 430nm, and thus can impart an excellent ability to absorb light in an ultraviolet wavelength range (300 nm to 430 nm) to the filter 10. The ultraviolet-absorbing pigment (a) has a molecular weight of 2000 or less, and can be formed on a transparent substrate at a low temperature. Therefore, thermal degradation of the ultraviolet absorbing pigment (a) can be suppressed, and the filter 10 can obtain desired ultraviolet absorbing characteristics.
The ultraviolet absorbing pigment (a) includes: triazine compound, indole compound, azomethine compound, benzotriazole compound, merocyanine compound and benzoAzole compounds, cyanine compounds, naphthalimide compounds, and->Diazoles, & gt>Oxazine compounds, (-) -and>oxazolidine compound, naphthalene dicarboxylic acid compound, styryl compound, anthracene compound,Cyclic carbonyl compounds, triazole compounds, and the like.
Among these, triazine compounds, indole compounds, azomethine compounds, benzotriazole compounds, merocyanine compounds, and benzo are preferableAzole compounds, more preferably merocyanines and benzo +.>Azole compounds. Comprises merocyanines, benzo ∈ ->The ultraviolet absorbing dye (a) of the azole compound has a large absorbance and can efficiently absorb the desired ultraviolet band, and is preferable in this respect. In addition, since the characteristic change from the ultraviolet wavelength region to the visible light wavelength region is steep in terms of the optical characteristics in the vicinity of ultraviolet rays, the transmittance loss in the visible light range is less likely to occur, and is preferable.
The ultraviolet absorbing dye (a) is preferably a merocyanine compound represented by the following formula (U1). In this specification, the compound represented by the formula (U1) is also referred to as a compound (U1). The same applies to other compounds.
The symbols in the formula (U1) are as follows. Y represents R 6 And R is 7 Substituted methylene, or an oxygen atom. R is R 1 Represents a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent. R is R 2 ～R 7 Each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms. X represents any one of divalent groups represented by the following formulas (X1) to (X5) (wherein R 8 And R is 9 Each independently represents a cocoaR is a monovalent hydrocarbon group having 1 to 12 carbon atoms and having a substituent 10 ～R 19 Each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent).
In formula (U1), R is preferably 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, a part of which may be substituted with a cycloalkyl group or a phenyl group, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
In formula (U1), R is preferably 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Examples of the compound (U1) include: and compounds represented by the following formulas (U1-1), formula (U1-2), formula (U1-3), formula (U1-4), formula (U1-5) and formula (U1-6), respectively.
With respect to use as benzoThe ultraviolet absorbing pigment (C) of the azole compound includes, for example: a compound represented by the following formula (U2-1), and the like.
In the present embodiment, as the ultraviolet absorbing pigment (a), one compound selected from a plurality of compounds having a maximum absorption wavelength in a wavelength range of 300nm to 430nm may be used alone, or two or more compounds may be used in combination. The ultraviolet absorbing pigment (a) preferably contains one or more of the above ultraviolet absorbing pigments (a). The ultraviolet absorbing pigment (a) may contain an optional ultraviolet absorbing pigment as required. In the case of using a plurality of ultraviolet-absorbing pigments as the ultraviolet-absorbing pigment (A), it is preferable to use the ultraviolet-absorbing pigments in combination so that they exhibit the maximum absorption wavelength in the wavelength range of 300nm to 430 nm.
(inorganic Material)
As the inorganic material (B), an inorganic material having a refractive index of 1.38 to 2.20 at a wavelength of 500nm is preferable.
The inorganic material (B) may specifically be: silica, alumina, magnesium fluoride, sodium fluoride, lanthanum fluoride, lithium fluoride, calcium fluoride, barium fluoride, lanthanum oxide, cerium oxide, germanium oxide, indium oxide, magnesium oxide, zirconium oxide, tantalum oxide, yttrium oxide, tungsten oxide, zinc oxide, ITO, a material in which the valence of these compounds is changed, a composite material in which the refractive index is adjusted by mixing any of these compounds as a main component, or the like. Among these, the smaller the refractive index difference from the transparent substrate 1, the easier the spectral characteristics are intentionally adjusted, and from the viewpoint of ensuring practical reliability, the inorganic material (B) is preferably one or more selected from silica, alumina, and magnesium fluoride. In the case of using an inorganic material having a refractive index of 1.38 to 2.20 at a wavelength of 500nm as the inorganic material (B), one or more of these inorganic materials may be used alone or two or more of them may be used in combination as long as the refractive index as a whole falls within this range.
In the filter 10, since the matrix material in which the ultraviolet-absorbing pigment (a) is dispersed is an inorganic material, it is considered that the hydroxyl groups are smaller than those in the case where the matrix material is a resin, and photooxidation of the ultraviolet-absorbing pigment (a) by sunlight or indoor light can be suppressed. Therefore, the filter 10 can exhibit excellent light resistance and ultraviolet shielding characteristics.
The film thickness of the first light absorbing layer 2 is not particularly limited, and is appropriately determined according to the application, that is, the arrangement space in the device to be used, the required absorption characteristics, and the like. The film thickness of the first light absorbing layer 2 is preferably 0.1 μm to 100 μm. When the film thickness is less than 0.1 μm, there is a possibility that the ultraviolet absorbing ability may not be sufficiently exhibited. If the film thickness is larger than 100 μm, the flatness of the film may be lowered, and the absorption rate may vary. The film thickness is more preferably 0.2 μm to 0.7. Mu.m. If the film thickness is within this range, a sufficient ultraviolet absorption capacity can be obtained. In the present specification, the film thickness refers to a physical film thickness.
The first light-absorbing layer 2 may contain optional components in addition to the ultraviolet-absorbing pigment (a) and the inorganic material (B) as required within a range that does not hinder the effects of the present invention. As optional ingredients, specifically, there may be mentioned: near infrared to infrared absorbers, color tone correction pigments, ultraviolet absorbers, leveling agents, antistatic agents, heat stabilizers, light stabilizers, antioxidants, and the like. The content of these optional components in the first light absorbing layer 2 is preferably 15 parts by mass or less each with respect to 100 parts by mass of the inorganic material (B).
As an optional component, the above optional component preferably contains a near infrared ray absorbing pigment (C) as a near infrared ray absorber. The first light absorbing layer 2 contains the near infrared ray absorbing dye (C), and thus can exhibit both a function of absorbing near infrared rays and a function of absorbing ultraviolet rays.
(near infrared ray absorption pigment)
The near-infrared ray absorbing dye (C) is not particularly limited as long as it has a maximum absorption wavelength in a wavelength range of 650nm to 760nm and has a molecular weight of 2000 or less. The absorption curve of the near infrared ray absorption pigment (C) preferably has lambda except in the wavelength range of 650nm to 760nm max In addition, absorption in the visible light region is small, and lambda max The slope of the absorption peak on the visible side of (2) is steep. Furthermore lambda max The absorption peak of (2) is preferably gentle on the long wavelength side.
Lambda of near infrared ray absorbing pigment (C) max The detection can be performed by using an absorption curve in a wavelength range of 400nm to 850nm measured by, for example, an ultraviolet-visible near infrared spectrophotometer (model: V770, manufactured by Japanese Specification Co., ltd.) using a solution obtained by dissolving the near infrared absorbing dye (C) in methylene chloride. In the present specification, unless otherwise specified, measurement of the absorption curve is performed under the condition of an incident angle of 0 °.
The near infrared ray absorption dye (C) has a maximum absorption wavelength in a wavelength range of 650nm to 760nm, and thus can impart the optical filter 10 with an ability to absorb light in the near infrared ray wavelength range (700 nm to 1100 nm). Further, the near infrared ray absorbing dye (C) has a molecular weight of 2000 or less, and can be formed on the transparent substrate at a low temperature. Therefore, thermal degradation of the near infrared ray absorbing dye (C) can be suppressed, and the filter 10 can obtain desired near infrared ray absorbing characteristics.
Examples of the near infrared ray absorbing dye (C) include: cyanine compounds, phthalocyanine compounds, naphthalocyanine compounds, dithiol metal complex compounds, diimmonium compounds, polymethine compounds, phthalide compounds, naphthoquinone compounds, anthraquinone compounds, indophenol compounds, squaraine compoundsSalt compounds, and the like.
Of these, more preferable is squaraineSalt compounds, cyanine compounds and phthalocyanine compounds, particularly preferably squaraine ++>And (3) a salt compound. Comprises->The near infrared ray absorption dye (C) of the salt compound has small absorption in the visible light region, lambda in the absorption curve max The absorption peak of (2) has a steep gradient on the visible light side, and is high in storage stability and stability to light, and is therefore preferable. The near infrared ray absorption dye (C) containing a cyanine compound has a small absorption in the visible light region in the absorption curve, and is represented by lambda max The absorbance at the long wavelength side in the nearby wavelength range is high, and is therefore preferable. In addition, cyanine compounds have been known as pigments for recording color such as CD-R since ancient times, and are low in cost and can ensure long-term stability by salt formation. The near infrared absorbing dye (C) containing the phthalocyanine compound is preferable because it is excellent in heat resistance and weather resistance.
Regarding as the squaraineThe near infrared absorbing dye (C) of the salt compound includes, specifically: is selected from squaraine represented by the following formula (F1)>At least one of the salt compounds. In this specification, the compound represented by the formula (F1) is also referred to as a compound (F1). The same applies to other compounds.
The compound (F1) is in squaric acidIn squaric acid having a structure in which a benzene ring is bonded to the left and right sides of a salt skeleton, and a nitrogen atom is bonded to the 4-position of the benzene ring and a saturated heterocyclic ring containing the nitrogen atom is formed >And (3) a salt compound. The compound (F1) is a compound having light absorption characteristics as the near infrared ray absorption dye (C). In the compound (F1), the substituent of the benzene ring can be appropriately adjusted within the following range according to other required characteristics such as the improvement of the solubility in the solvent (hereinafter, also referred to as "main solvent") used in forming the first light absorbing layer and the inorganic material (B).
The symbols in the formula (F1) are as follows. R is R 4 And R is 6 Each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an acyloxy group having 1 to 10 carbon atoms, an aryl group having 6 to 11 carbon atoms, an aralkyl group having 7 to 18 carbon atoms which may have a substituent and may have an oxygen atom between carbon atoms, -NR 7 R 8 (R 7 And R is 8 Each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, -C (=O) -R 9 (R 9 A hydrocarbon group of 1 to 25 carbon atoms which is a hydrogen atom, a halogen atom, a hydroxyl group, a hydrocarbon group which may have a substituent and may contain an unsaturated bond, an oxygen atom, a saturated or unsaturated ring structure between carbon atoms), or-NHR 10 or-SO 2 -R 10 (R 10 Each of which is a hydrocarbon group having 1 to 25 carbon atoms and having a ring structure which may be unsaturated, oxygen atom, saturated or unsaturated, and which may be substituted with a halogen atom, hydroxyl group, carboxyl group, sulfo group or cyano group), or a group (R) represented by the following formula (S) 41 And R is 42 Independently represent a hydrogen atom or a halogen atomA child, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms. k is 2 or 3).
R 1 And R is 2 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring A, R 2 And R is 5 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring B, and R 1 And R is 3 May be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring C.
With respect to R in the case of formation of the heterocyclic ring A 1 And R is 2 The divalent group-Q-bonded thereto represents an alkylene or alkyleneoxy group in which a hydrogen atom may be substituted with an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 10 carbon atoms or an acyloxy group having 1 to 10 carbon atoms which may have a substituent.
With respect to R in the case of formation of heterocyclic ring B 2 And R is 5 And R in the case of formation of heterocycle C 1 And R is 3 As R 2 And R is 5 Divalent group-X bonded 1 -Y 1 -and R 1 And R is 3 Divalent group-X bonded 2 -Y 2 - (nitrogen-bonded side being X 1 And X 2 )，X 1 And X 2 Each is a group represented by the following formula (1 x) or (2 x), Y 1 And Y 2 Each is a group represented by any one selected from the following formulas (1 y) to (5 y). At X 1 And X 2 In the case where each is a group represented by the following formula (2 x), Y 1 And Y 2 Each may be a single bond.
In the formula (1 x), 4Z's each independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or-NR 28 R 29 (R 28 And R is 29 Each independently represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms). R is R 21 ～R 26 Each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, R 27 Represents an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms.
R 7 、R 8 、R 9 、R 4 、R 6 、R 21 ～R 27 R in the absence of heterocyclic ring formation 1 ～R 3 And R is 5 Each may be bonded to each other with any of them to form a five-membered ring or a six-membered ring. R is R 21 And R is 26 Can be directly bonded, R 21 And R is 27 Can be directly bonded.
R in the absence of formation of heterocyclic ring 1 And R is 2 Each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, an allyl group which may have a substituent, or an aryl group or an aralkyl group having 6 to 11 carbon atoms. R in the absence of formation of heterocyclic ring 3 And R is 5 Each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms.
Hereinafter, the heterocyclic ring a may be simply referred to as ring a. The same applies to the heterocycles B and C.
In the compound (F1), R 4 And R is 6 Each independently represents the above atom or group. Examples of the halogen atom include: fluorine atom, chlorine atom, bromine atom, etc. The alkyl group may be any of linear, branched, and cyclic. R is R 4 And R is 6 Preferably either is a hydrogen atom and the other is-NR 7 R 8 Is a combination of (a) and (b).
In the case of the compound (F1) having only ring A of the rings A to C, only ring B and ring C, and having rings A to C, -NR 7 R 8 Can be introduced into R 4 And R is 6 Any one of the above. In the case of the compound (F1) having only the ring B, only the rings A and B, -NR 7 R 8 Preferably is introduced into R 4 . In the same way as described above,in the case of the compound (F1) having only the ring C, only the ring A and the ring C, -NR 7 R 8 Preferably is introduced into R 6 。
as-NR 7 R 8 From the viewpoint of solubility in the main solvent and the inorganic material (B), it is preferable that-NHC (=o) -R 9 . As R 9 An alkyl group having 1 to 20 carbon atoms which may have a substituent, an aryl group having 6 to 10 carbon atoms which may have a substituent, or an aralkyl group having 7 to 18 carbon atoms which may have a substituent and an oxygen atom between carbon atoms is preferable. As the substituent, there may be mentioned: fluorine atom, alkyl group having 1 to 6 carbon atoms, fluoroalkyl group having 1 to 6 carbon atoms, alkoxy group having 1 to 6 carbon atoms, acyloxy group having 1 to 6 carbon atoms, and the like.
As R 9 Among these groups, preferred is an alkyl group having 1 to 17 carbon atoms selected from the group consisting of linear, branched and cyclic alkyl groups which may be substituted with a fluorine atom; phenyl which may be substituted with a fluoroalkyl group having 1 to 6 carbon atoms and/or an alkoxy group having 1 to 6 carbon atoms; and an aralkyl group having a phenyl group which may be substituted with an alkyl group having 1 to 6 carbon atoms and/or an alkoxy group having 1 to 6 carbon atoms, wherein the alkyl group may have 7 to 18 carbon atoms and the alkoxy group may have 1 to 6 carbon atoms.
In the compound (F1), R is as follows 1 And R is 2 、R 2 And R is 5 And R is 1 And R is 3 Five-membered or six-membered rings a, B and C, each of which is bonded to each other, may be formed at least in 1 or 2 or 3 of them.
R in the case of non-ring formation 1 And R is 2 Each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, an allyl group which may have a substituent, or an aryl group or an aralkyl group having 6 to 11 carbon atoms. The alkyl group may be any of linear, branched, and cyclic. As the substituent, there may be mentioned: hydroxy, alkoxy having 1 to 3 carbon atoms, and acyloxy having 1 to 3 carbon atoms. R in the case of non-ring formation 3 And R is 5 Each independently represents a hydrogen atom, a halogenAn atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms. Among these, R is 1 、R 2 、R 3 、R 5 From the viewpoint of solubility in the main solvent and the inorganic material (B), an alkyl group having 1 to 3 carbon atoms is preferable, and methyl group and 2-propyl group are particularly preferable.
In addition, in the compound (F1), in squaric acidA group R of benzene ring bonded from left to right of salt skeleton 1 ～R 6 May be different from each other in the left-right direction, but is preferably the same in the left-right direction.
The compound (F1) includes a compound (F1-1) represented by the formula (F1-1) having a resonance structure having a structure represented by the general formula (F1).
Wherein the symbols in the formula (F1-1) are the same as defined in the above formula (F1).
As the compound (F1), more specifically, there may be mentioned: a compound represented by the following formula (F11) having only ring B as a ring structure, a compound represented by the following formula (F12) having only ring a as a ring structure, and a compound represented by the following formula (F13) having both ring B and ring C as ring structures. The compound represented by the following formula (F11) has only ring C as a ring structure and R in the compound (F1) 6 is-NR 7 R 8 The same compound as the above. The compound represented by the following formula (F11) and the compound represented by the following formula (F13) are compounds described in the specification of U.S. Pat. No. 5543086.
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The symbols in the formulae (F11) to (F13) are the same as defined in the above formula (F1), and the preferable embodiment is the same.
In the compound (F11), X is 1 Preferably, the hydrogen atom represented by the above (2 x) may be an ethylene group substituted with an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms. In this case, the substituent is preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group. As X 1 Specifically, it is possible to list: - (CH) 2 ) 2 -、-CH 2 -C(CH 3 ) 2 -、-CH(CH 3 )-C(CH 3 ) 2 -、-C(CH 3 ) 2 -C(CH 3 ) 2 -and the like. As-NR in the Compound (F11) 7 R 8 preferably-NH-C (=O) -CH 3 、-NH-C(＝O)-C 6 H 13 、-NH-C(＝O)-C 6 H 5 、-NH-C(＝O)-CH(C 2 H 5 )-C 4 H 9 、-NH-C(＝O)-C(CH 3 ) 2 -C 2 H 5 、-NH-C(＝O)-C(CH 3 ) 2 -C 3 H 7 、-NH-C(＝O)-C(CH 3 ) 2 -(CH 2 ) 3 -O-C 6 H 3 (CH 3 ) 2 Etc.
Examples of the compound (F11) include: and compounds represented by the following formulas (F11-1), (F11-2), (F11-3), (F11-4), (F11-5), (F11-6), (F11-7) and (F11-8), respectively. Among these, the compound (F11-2), the compound (F11-3), the compound (F11-4), the compound (F11-5), the compound (F11-6), the formula (F11-7) and the formula (F11-8) are more preferable from the viewpoint of high solubility in the main solvent and the inorganic material (B).
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In the compound (F12), Q is an alkylene group having 4 or 5 carbon atoms or an alkyleneoxy group having 3 or 4 carbon atoms which may be substituted with an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 10 carbon atoms or an acyloxy group having 1 to 10 carbon atoms which may have a substituent. In the case of an alkyleneoxy group, the position of oxygen is preferably a position other than the N-adjacent position. The group Q is preferably a butylene group which may be substituted with an alkyl group having 1 to 3 carbon atoms, particularly a methyl group.
In the compound (F12), -NR 7 R 8 preferably-NH-C (=O) - (CH 2 ) m -CH 3 (m is 0 to 19), -NH-C(＝O)-Ph-R 10 (-Ph-represents phenylene, R) 10 Represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms in which a hydrogen atom may be substituted with a fluorine atom, or an alkoxy group having 1 to 3 carbon atoms), or the like.
Here, lambda of the compound (F12) max On the longer wavelength side of the above wavelength range, therefore, if the compound (F12) is used, the transmission region of the visible light band can be widened. Examples of the compound (F12) include: and compounds represented by the following formulas (F12-1), (F12-2) and (F12-3).
In the compound (F13), X is 1 And X 2 Independently, an ethylene group in which a hydrogen atom represented by the above (2 x) may be substituted with an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms is preferable. In this case, the substituent is preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group. As X 1 And X 2 Specifically, it is possible to list: - (CH) 2 ) 2 -、-CH 2 -C(CH 3 ) 2 -、-CH(CH 3 )-C(CH 3 ) 2 -、-C(CH 3 ) 2 -C(CH 3 ) 2 -and the like. As Y 1 And Y 2 Independently, there may be mentioned: -CH 2 -、-C(CH 3 ) 2 -、-CH(C 6 H 5 )-、-CH((CH 2 ) m CH 3 ) - (m is 0 to 5), etc. In the compound (F13), -NR 7 R 8 preferably-NH-C (=O) -C m H 2m+1 (m is 1 to 20, C) m H 2m+1 Can be straightAny of chain, branched, and cyclic), -NH-C (=o) -Ph-R 10 (-Ph-represents phenylene, R) 10 Represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms), or the like.
Examples of the compound (F13) include: and compounds represented by the following formulas (F13-1) and (F13-2), respectively.
As the near infrared absorbing dye (C), a squaraine represented by the following formula (F2) can be usedAnd (3) a salt compound. The formula (F2) represents a compound in which any one of ring A, ring B, and ring C is not formed in the formula (F1) (wherein R 1 ～R 6 As described below).
The symbols in the formula (F2) are as follows. R is R 1 And R is 2 Each independently represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms which may have a substituent, an allyl group which may have a substituent, or an aryl group or an aralkyl group having 6 to 11 carbon atoms. R is R 3 And R is 5 Each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms. R is R 4 And R is 6 Each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an acyloxy group having 1 to 10 carbon atoms, or-NR 7 R 8 (R 7 And R is 8 Each independently represents a hydrogen atom, carbonAlkyl having 1 to 20 atoms, or-C (=O) -R 9 (R 9 An alkyl group having 1 to 20 carbon atoms which may have a substituent, an aryl group having 6 to 11 carbon atoms which may have a substituent, or an aralkyl group having 7 to 18 carbon atoms which may have a substituent and may have an oxygen atom between carbon atoms).
Examples of the compound (F2) include: and compounds represented by the formula (F2-1) and the formula (F2-2).
Further, as the near infrared ray absorbing dye (C), a squaric acid represented by the following formula (F3) may be usedAnd (3) a salt compound.
The compound (F1), the compound (F2), and the compound (F3) such as the compound (F11), the compound (F12), and the compound (F13) can be produced by a known method. The compound (F11) such as the compound (F11-1) can be produced by the method described in the specification of U.S. Pat. No. 5543086. The compound (F12) can be produced by the method described in J.org.chem.2005,70 (13), 5164-5173, for example.
In which the near infrared ray absorbing pigment (C) is squaric acidIn the case of the salt compound, a commercially available product can be used. Examples of the commercial products include: s2098, S2084 (trade name, manufactured by FEW Chemicals), and the like.
The near infrared absorbing dye (C) as the cyanine compound may be specifically: at least one kind selected from cyanine compounds represented by the following formula (F4).
Wherein the symbols in the formula (F4) are as follows. R is R 11 Each independently represents an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an alkylsulfonyl group having 1 to 20 carbon atoms, or an anionic species thereof.
R 12 And R is 13 Each independently represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
Z represents PF 6 、ClO 4 、R f -SO 2 、(R f -SO 2 ) 2 -N(R f Alkyl group having 1 to 8 carbon atoms, in which at least one hydrogen atom is substituted with a fluorine atom), or BF 4 。
R 14 、R 15 、R 16 And R is 17 Each independently represents a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms. n represents an integer of 1 to 6.
R in the compound (F4) 11 Preferably an alkyl group having 1 to 20 carbon atoms, R 12 And R is 13 Each independently is preferably a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. R is R 14 、R 15 、R 16 And R is 17 Each independently is preferably a hydrogen atom, and the number of n is preferably 1 to 4. The left and right structures sandwiching n repeating units may be different, but the same structure is preferable.
As the compound (F4), more specifically, there can be exemplified: a compound represented by the following formula (F4-1), a compound represented by the following formula (F4-2), and the like. Z-represents an anion as in the above-mentioned Z-in (F4).
As the near infrared absorbing dye (C) which is a cyanine compound, commercially available products can be used. Examples of the commercial products include: ADS680HO (trade name, manufactured by American dye), S0830 (trade name, manufactured by FEW Chemicals), S2137 (trade name, manufactured by FEW Chemicals), and the like.
Further, examples of the phthalocyanine compound which can be used as the near infrared absorbing dye (C) include: FB22 (trade name, manufactured by mountain chemical industries, co.), TXEX720 (trade name, manufactured by japan catalyst co., co.), PC142c (trade name, manufactured by mountain chemical industries, co.), and the like.
In the present embodiment, as the near infrared ray absorbing pigment (C), one compound selected from a plurality of compounds having a maximum absorption wavelength in a wavelength range of 650nm to 760nm may be used alone, or two or more compounds may be used in combination. The near infrared ray absorbing dye (C) preferably contains one or two or more of the above near infrared ray absorbing dyes (C). The near infrared ray absorbing dye (C) may contain an optional near infrared ray absorbing dye as required. In the case of using a plurality of near infrared ray absorption pigments as the near infrared ray absorption pigment (C), it is preferable to use the near infrared ray absorption pigments in combination so that they exhibit the maximum absorption wavelength in the wavelength range of 650nm to 760 nm. In addition, it is preferable to use a near infrared ray absorbing pigment in combination so that the absorption in the visible light region is small, λ in the absorption curve max The slope of the absorption peak on the visible side is steep and the slope on the long wavelength side is gentle.
(modification)
A modification of the filter 10 will be described with reference to fig. 2 to 6. Fig. 2 is a schematic cross-sectional view of a first modification of the filter according to the embodiment of the present invention. Fig. 3 is a schematic cross-sectional view of a second modification of the filter according to the embodiment of the present invention. Fig. 4 is a schematic cross-sectional view of a third modification of the filter according to the embodiment of the present invention. Fig. 5 is a schematic cross-sectional view of a fourth modification of the filter according to the embodiment of the present invention. Fig. 6 is a schematic cross-sectional view of a fifth modification of the filter according to the embodiment of the present invention.
As shown in fig. 2, the first light absorbing layer 2 may have an inorganic layer 21 containing an inorganic material (B) and a pigment layer 22 containing an ultraviolet absorbing pigment (a). The interface between the inorganic layer 21 and the pigment layer 22 may be a clear interface not including the other, or may be a portion where the inorganic material (B) and the near infrared absorbing pigment (a) are mixed. In fig. 2, an example is shown in which the transparent base material 1, the inorganic layer 21, and the pigment layer 22 are laminated in this order, but the transparent base material 1, the pigment layer 22, and the inorganic layer 21 may be laminated in this order. As shown in fig. 3, a plurality of inorganic layers 21 and a plurality of pigment layers 22 may be alternately laminated. In the example shown in fig. 3, the inorganic layers 21 and the pigment layers 22 may be alternately laminated in the reverse order.
As shown in fig. 4, the filter 40 may have the second light absorbing layer 3 on one main surface (first main surface) side of the transparent substrate 1. In the example shown in fig. 4, the transparent substrate 1, the first light absorbing layer 2, and the second light absorbing layer 3 are laminated in this order, but as shown in fig. 5, the transparent substrate 1, the second light absorbing layer 3, and the first light absorbing layer 2 may be laminated in this order in the filter 50. As shown in fig. 6, the filter 60 may be provided with a first light absorbing layer on the first main surface side of the transparent substrate 1 and a second light absorbing layer 3 on the second main surface side of the transparent substrate 1.
The second light absorbing layer 3 has a near infrared ray absorbing pigment (C) having a maximum absorption wavelength in the wavelength range of 300nm to 430nm and a matrix material. As the near infrared ray absorbing dye (C), specifically, the same near infrared ray absorbing dye (C) as in the case of the filter 10 shown in fig. 1 described above can be applied.
Lambda of near infrared ray absorbing pigment (C) max The solution obtained by dissolving the near infrared absorbing dye (C) in methylene chloride can be used, for example, by using an ultraviolet-visible near infrared spectrophotometer (manufactured by Japanese Specification Co., ltd.)Number: v770) in the wavelength range of 400nm to 850 nm.
The near infrared ray absorption dye (C) has a maximum absorption wavelength in a wavelength range of 650nm to 760nm, and thus can impart the optical filter 10 with an ability to absorb light in the near infrared ray wavelength range (700 nm to 1100 nm).
The matrix material may be an inorganic material or a resin. Specifically, the inorganic material (B) similar to the case of the filter 10 shown in fig. 1 described above can be applied as the inorganic material.
The resin preferably has a refractive index of 1.45 or more. The refractive index is more preferably 1.5 or more, particularly preferably 1.6 or more. The upper limit of the refractive index of the resin is not particularly limited, but is preferably about 1.72 in view of easiness of obtaining and the like.
As the resin, specifically, there may be mentioned: acrylic resins, epoxy resins, alkene-thiol resins, polycarbonate resins, polyether resins, polyarylate resins, polysulfone resins, polyethersulfone resins, polyparaphenylene resins, polyarylene ether phosphine oxide resins, polyimide resins, polyamideimide resins, polyolefin resins, cyclic olefin resins, and polyester resins. One of these resins may be used alone, or two or more of these resins may be used in combination. In the case of using a resin having a refractive index of 1.45 or more, one of these resins may be used alone or two or more of these resins may be used in combination as long as the refractive index is 1.45 or more as a whole.
Among the resins, polyimide resins, polyester resins, and polycarbonate resins are preferable from the viewpoint of high solubility of the near infrared ray absorbing dye (C) and high glass transition temperature, and from the viewpoint of suppressing thermal movement of the near infrared ray absorbing dye (C) and improving heat resistance.
The filters 10, 20, 30, 40, 50, 60 of the present embodiment may be provided with a protective layer on the surface (surface in contact with the atmosphere) of the first light absorbing layer 2 or the second light absorbing layer 3. In the example shown in fig. 6, a protective layer may be provided on both the surface of the first light absorbing layer 2 and the surface of the second light absorbing layer 3. By providing the protective layer on the surface of the first light absorbing layer 2 or the second light absorbing layer 3, light and moisture reaching these light absorbing layers at specific wavelengths can be shielded, and thus the light resistance of the filter can be improved.
The protective layer is not particularly limited, and may be composed of an antireflection film, a reflection film that reflects light in a specific wavelength range, a selective wavelength shielding film that controls transmission and shielding of light in a specific wavelength range, a radiation shielding film that shields radiation such as α rays, and the like. The protective layer preferably has at least one of optical characteristics that suppress reflection of visible light, optical characteristics that reflect ultraviolet light, and optical characteristics that reflect infrared light. Specifically, for example, at least one of a visible light antireflection film that suppresses reflection of visible light, an ultraviolet reflection film that reflects ultraviolet light, and an infrared reflection film that reflects infrared light may be provided. Examples of the protective layer having such optical characteristics include: a dielectric multilayer film is obtained by laminating two or more dielectric films having different refractive indices.
Examples of the material constituting the protective layer include: silica, alumina, composite materials containing these as a main component, and the like. The protective layer provided on the surface of the first light absorbing layer 2 preferably contains the same material as the inorganic material (B). In addition, the protective layer provided on the surface of the second light absorbing layer 3 preferably contains the same material as the matrix material. By setting the above, the adhesion between each light absorbing layer and the protective layer is high, and peeling of both layers is less likely to occur. The protective layer may be one layer or may be a plurality of layers made of different materials.
The film thickness of the protective layer is preferably 0.01 μm to 10 μm, more preferably 0.1 μm to 5 μm, and is preferably thin from the viewpoint of thickness reduction of the filter. When the protective layer is formed of a plurality of layers, the total physical film thickness of the plurality of layers is used as the film thickness of the protective layer.
[ optical Properties ]
The first light absorbing layer 2 of the filter 10 is preferably: the average internal transmittance at a wavelength of 300nm to 380nm is 60% or less, the average internal transmittance at a wavelength of 430nm to 600nm is 80% or more, and the difference between the wavelength at which the transmittance is 80% and the wavelength at which the transmittance is 20% in the ultraviolet wavelength region is 45nm or less.
Transmittance is a value measured using an ultraviolet-visible near-infrared spectrophotometer. In the present specification, the internal transmittance means transmittance that does not include the influence of the reflection characteristics of the surface of the filter, and means a value calculated from transmittance/(100-reflectance) ×100. The average internal transmittance in a specific wavelength range is a value obtained by averaging the internal transmittance at all wavelengths in the wavelength range.
By having the above optical characteristics in the first light absorbing layer 2, the filter 10 can exhibit excellent ultraviolet shielding characteristics. Thus, the sensitivity of the solid-state imaging device can be improved.
The filters 40, 50, 60 having the second light absorbing layer 3 shown in fig. 4 to 6 preferably have the following characteristics (a-1) to (a-7).
(a-1) having a wavelength lambda at which the transmittance of light reaches 50% in the ultraviolet wavelength region in the range of 0 DEG to 50 DEG of the incident angle of light UV50％ The wavelength lambda UV50％ In the range of 350nm to 420 nm.
(a-2) the wavelength lambda at the incident angle of 0 DEG to the light UV50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light UV50％ The difference is 10nm or less.
(a-3) the average transmittance of the light having a wavelength of 440nm to 500nm at an incident angle of 0 DEG is 80% or more.
The average transmittance of (a-4) at a wavelength of 500nm to 600nm at an incident angle of 0 DEG is 85% or more.
(a-5) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 50% IR50％ The wavelength lambda at the incidence angle of light 0 DEG IR50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR50％ The difference is 10nm or less.
(a-6) the average transmittance of the light having a wavelength of 750nm to 1000nm at an incident angle of 0 DEG is 90% or less.
(a-7) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 20% IR20％ Incidence of lightSaid wavelength lambda at an angle of 0 DEG IR20％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR20％ The difference is 5nm or less.
In the present specification, the average transmittance in a specific wavelength range means a value obtained by averaging the transmittance at all wavelengths in the wavelength range. In addition, in the case of measuring the transmittance by making light incident from a direction other than the direction orthogonal to the main surface of the subject in the measurement of the transmittance of light, the angle formed by the straight line indicating the direction in which the light is incident with respect to the line orthogonal to the main surface is referred to as the incident angle. Unless otherwise specified, the transmittance of light refers to a ratio at which light incident from a direction orthogonal to a main surface of the object passes through the inside of the object straight and is transmitted to the opposite side.
The optical filters 40, 50, 60 having the second light absorbing layer 3 can exhibit excellent near infrared ray shielding characteristics and ultraviolet ray shielding characteristics by having the characteristics of (a-1) to (a-7) described above. Thus, the sensitivity of the solid-state imaging device can be improved.
(manufacturing method)
As for the method of manufacturing the optical filter 10, for example, a vacuum vapor deposition method is used, and the first light absorbing layer 2 is formed on the transparent substrate 1 by simultaneously heating the ultraviolet absorbing pigment (a) by resistance heating and the inorganic material (B) by Electron Beam (EB). In the case of the filter 10 having the first light absorbing layer 2 containing the ultraviolet absorbing dye (a) and the near infrared absorbing dye (C), for example, the ultraviolet absorbing dye (a) and the near infrared absorbing dye (C) are mixed and then heated by resistance heating. By using the vacuum vapor deposition method, the concentration of the ultraviolet absorbing pigment (a) contained in the first light absorbing layer 2 can be increased as compared with a wet film forming process, and therefore, a filter having more excellent ultraviolet shielding characteristics can be obtained.
In the case of the filter 20 shown in fig. 2, for example, an inorganic material (B) is heated by Electron Beam (EB) to form an inorganic layer 21 on the transparent substrate 1, and then an ultraviolet-absorbing pigment (a) is heated by resistance heating to form a pigment layer 22 on the inorganic layer 21. In the case of the filter 30 shown in fig. 3, the above-described operation is repeated, thereby forming a multilayer laminated structure.
The above-described vacuum vapor deposition method can be applied to the filters 40, 50, 60 shown in fig. 4 to 6, for example. As a method for producing the second light-absorbing layer 3, when an inorganic material is used as a matrix material, for example, a vacuum vapor deposition method can be used, and when a resin is used, for example, the following method can be used. Can be manufactured by: the near infrared absorbing pigment (C) and the resin (B) are dispersed in a solvent to be dissolved, and the coating liquid thus prepared is applied on the transparent substrate 1 or the first light absorbing layer 2, dried, and further cured as needed.
In the case of providing the protective layer, a vacuum film forming process such as a CVD method, a sputtering method, a vacuum vapor deposition method, or the like can be used for forming the protective layer; wet film forming processes such as spray coating and dip coating.
The embodiments of the present invention have been described above by taking the filters 10, 20, 30, 40, 50, 60 shown in fig. 1 to 6 as examples, but the filters are not limited thereto. The configuration can be changed as needed and within the limits not departing from the gist of the present invention. For example, any one of the filters may be provided with a reflective film that reflects light in a specific wavelength range and a selective wavelength shielding film that controls transmission and shielding of light in the specific wavelength range.
The filters 10, 20, 30, 40, 50, 60 can be used as imaging devices such as smart phone-mounted cameras, digital still cameras, digital video cameras, monitoring cameras, in-vehicle cameras, and web cameras, near infrared filters for automatic exposure meters, near infrared filters for PDPs, and the like. The filter can be used as a filter having two pass bands of wavelengths of visible light and near infrared light (for example, light having wavelengths of only 850nm and 940 nm) and cut off light having wavelengths other than those pass bands. The optical filter of the present invention is suitable for use in solid-state imaging devices such as smart phone-mounted cameras, digital still cameras, digital video cameras, surveillance cameras, in-vehicle cameras, and network cameras, and is disposed between an imaging lens and a solid-state imaging element, for example.
Examples
Next, an embodiment of the present invention will be described. The present invention is not limited to the embodiments and examples described below. In the following description, examples 1, 2 and 7 are examples, and example 3 is a comparative example. Examples 4 to 6 are reference examples.
Filters of examples 1 to 7 having the structures shown in tables 1 and 2 were produced. Examples 1 to 7 will be described in detail below.
Example 1
Longitudinal direction was used: 50mm, transverse: 50mm, thickness: a0.3 mm flat glass plate (D263, manufactured by Schottky Co.) was used as the transparent substrate. Using magnesium fluoride (MgF) 2 ) As a matrix material, a compound (U2-1) (molecular weight 430.17, maximum absorption wavelength in methylene chloride solution of 375nm, manufactured by tokyo chemical Co., ltd., product name: UVITEX OB) as an ultraviolet absorbing dye, a film is formed on a glass plate by a vacuum deposition apparatus so that both are mixed, thereby forming a light absorbing layer. The thickness of the light absorption layer is properly regulated to be between 200nm and 700 nm. On the surface of the obtained light absorption layer, silicon oxide (SiO 2 ) The filter of example 1 was obtained by forming a protective layer so that the film thickness was 100nm or more by a vacuum vapor deposition apparatus.
Example 2
In example 1, siO was used 2 A filter of example 2 was obtained in the same manner as in example 1 except that the substrate was used.
Example 3
The same glass plate as in example 1 was used as the transparent substrate. A coating liquid was obtained by mixing a compound (U2-1) as an ultraviolet absorbing pigment in a proportion of 4.5 parts by mass relative to 100 parts by mass of polyimide and the compound (U2-1) in a solution obtained by dissolving polyimide (trade name: C-3G30G manufactured by Mitsubishi gas chemical Co., ltd.) as a matrix material in an organic solvent, and then stirring and dissolving the mixture at room temperature. The obtained coating liquid was applied to a glass plate using a spin coater, and the organic solvent was removed by heating and drying, thereby forming a light absorbing layer having a film thickness of 1.11 μm, and thus obtaining the optical filter of example 3.
Example 4
The procedure of example 1 was repeated except that in example 1, compound (U1-6) (molecular weight 293.14, maximum absorption wavelength in methylene chloride solution: 399 nm) was used as the ultraviolet absorbing dye, thereby obtaining an optical filter of example 4.
Example 5
In example 1, siO was used 2 A filter of example 5 was obtained in the same manner as in example 1, except that the compound (U1-6) (molecular weight 293.14, maximum absorption wavelength in methylene chloride solution: 399 nm) was used as the substrate material as the ultraviolet absorbing dye.
Example 6
A filter of example 6 was obtained in the same manner as in example 1 except that the protective layer was not provided in example 1.
Example 7
In example 1, magnesium fluoride (MgF 2 ) A filter of example 7 was obtained in the same manner as in example 1 except that the protective layer was formed.
[ measurement of spectral transmittance ]
The obtained filters of examples 1 to 7 were subjected to measurement of transmittance at an incident angle of 0℃by using an ultraviolet-visible near infrared spectrophotometer (model: V770, manufactured by Japanese Specification Co., ltd.), to obtain a spectral transmittance curve. Fig. 7 shows the spectral transmittance curve of the filter of example 1, fig. 8 shows the spectral transmittance curve of the filter of example 2, fig. 9 shows the spectral transmittance curve of the filter of example 3, fig. 10 shows the spectral transmittance curve of the filter of example 4, fig. 11 shows the spectral transmittance curve of the filter of example 5, fig. 12 shows the spectral transmittance curve of the filter of example 6, and fig. 13 shows the spectral transmittance curve of the filter of example 7. As shown in fig. 7 to 13, the filters of examples 1 to 7 were filters having low transmittance of light in the vicinity of 350nm and ultraviolet shielding characteristics.
[ evaluation of light resistance ]
The light resistance test was performed on the obtained filters of examples 1 to 3 and 7, and the light resistance was evaluated. In the light resistance test, the filter was irradiated with light under the following conditions using Super Xenon Weather Meter SX75 (manufactured by Wash tester Co., ltd.).
(irradiation conditions)
Wavelength: 300 nm-2450 nm
Temperature: 4 DEG C
Humidity: 50% RT
Cumulative light amount: 87.2 kw.h/m 2
After light irradiation, the transmittance at an incident angle of 0 ° was measured, and a spectral transmittance curve was obtained. Fig. 7 shows the spectral transmittance curves before and after the light resistance test of the filter of example 1, fig. 8 shows the spectral transmittance curves before and after the light resistance test of the filter of example 2, fig. 9 shows the spectral transmittance curves before and after the light resistance test of the filter of example 3, and fig. 13 shows the spectral transmittance curves before and after the light resistance test of the filter of example 7.
The minimum transmittance of light having a wavelength of 500nm to 800nm before and after irradiation was obtained from the spectral transmittance curve before and after irradiation, and the fluctuation was calculated by the following formula.
Minimum transmittance variation [% ] = (minimum transmittance of light having a wavelength of 500nm to 800nm before irradiation) - (minimum transmittance of light having a wavelength of 500nm to 800nm after irradiation)
In the evaluation of light resistance, a is shown in table 1 when the minimum transmittance variation amount [% ] is 5% or less, B is shown in table 1 when the minimum transmittance variation amount [% ] is more than 5%, and a is evaluated as being acceptable.
TABLE 2
As shown in table 1, it is clear that the filters of examples 1, 2 and 7 using an inorganic material as a matrix material are filters having good light resistance. Since the matrix material is an inorganic material, the hydroxyl groups are smaller than those in the case where the matrix material is a resin, and photooxidation of the ultraviolet absorbing pigment (a) by light is suppressed.
Mode for the invention
The present invention includes the following means.
Mode 1 >
A filter comprising a transparent substrate having a first main surface and a first light-absorbing layer provided on the first main surface side of the transparent substrate,
the first light absorbing layer comprises an ultraviolet absorbing pigment and an inorganic material,
the ultraviolet absorbing pigment has a maximum absorption wavelength in a wavelength range of 300nm to 430nm, and the molecular weight of the ultraviolet absorbing pigment is 2000 or less.
Mode 2 >
The filter according to claim 1, wherein the first light-absorbing layer is formed by mixing the ultraviolet-absorbing pigment and the inorganic material.
Mode 3 >
The filter according to claim 2, wherein the concentration of the ultraviolet absorbing dye is different in the orthogonal direction to the first main surface.
Mode 4 >
The filter according to mode 1, wherein the first light-absorbing layer has a pigment layer containing the ultraviolet-absorbing pigment and an inorganic layer containing the inorganic material.
Mode 5 >
The filter according to any one of claims 1 to 4, wherein an average internal transmittance of the first light-absorbing layer at a wavelength of 300nm to 380nm is 60% or less, an average internal transmittance of the first light-absorbing layer at a wavelength of 430nm to 600nm is 80% or more, and a difference between a wavelength at which the transmittance in an ultraviolet wavelength region reaches 80% and a wavelength at which the transmittance reaches 20% is 45nm or less.
Mode 6 >
The optical filter according to any one of embodiments 1 to 5, wherein the ultraviolet absorbing pigment is selected from the group consisting of triazine compounds, indole compounds, azomethine compounds, benzotriazole compounds, merocyanine compounds, and benzoAt least one kind of azole compound.
Mode 7 >
The filter according to claim 6, wherein the ultraviolet-absorbing dye comprises a merocyanine compound represented by the following formula (U1),
Wherein the symbols in formula (U1) are as follows:
y represents R 6 And R is 7 A substituted methylene group, or an oxygen atom;
R 1 represents a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent. R is R 2 ～R 7 Each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms;
x represents any one of divalent groups represented by the following formulas (X1) to (X5) (wherein R 8 And R is 9 Each independently represents a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent, R 10 ～R 19 Each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent);
mode 8 >
The filter according to mode 7, wherein R in formula (U1) 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, a part of which may be substituted with a cycloalkyl group or a phenyl group, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Mode 9 >
The filter according to mode 7, wherein, in formula (U1), R 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Mode 10 >
The filter according to mode 6, wherein the ultraviolet-absorbing pigment is benzo Azole compounds.
Mode 11 >
The filter according to any one of modes 1 to 10, wherein the refractive index of the inorganic material at a wavelength of 500nm is 1.38 to 2.20.
Mode 12 >
The filter according to mode 11, wherein the inorganic material is at least one selected from the group consisting of silica, alumina, and magnesium fluoride.
Mode 13 >
The filter according to any one of claims 1 to 12, wherein a protective layer is provided on a surface of the first light absorbing layer.
Mode 14 >, mode
The filter according to mode 13, wherein the protective layer provided on the surface of the first light-absorbing layer contains the same material as the inorganic material.
Mode 15 >
The filter according to any one of claims 13 to 14, wherein the protective layer provided on the surface of the first light absorbing layer has at least one of optical characteristics that suppress reflection of visible light, optical characteristics that reflect ultraviolet light, and optical characteristics that reflect infrared light.
Mode 16 >
The optical filter according to any one of modes 1 to 15, wherein,
a second light absorbing layer is provided on the first main surface side of the transparent substrate,
The second light absorbing layer is formed by mixing a near infrared ray absorbing pigment and a matrix material,
the near infrared absorbing dye has a maximum absorption wavelength in a wavelength range of 650nm to 760 nm.
Mode 17 >
The filter according to mode 16, wherein the matrix material is any one selected from the group consisting of silica, alumina, magnesium fluoride, polyimide resin, polyester resin, and polycarbonate resin.
Mode 18 >
The optical filter according to any one of embodiments 16 and 17, wherein the near infrared ray absorbing dye is selected from the group consisting of squaraineAt least one kind selected from the group consisting of salt compounds, phthalocyanine compounds and cyanine compounds.
Mode 19 >
The filter according to mode 18, wherein the squaraine isThe salt compound has a structure represented by the following formula (F1). />
Wherein the symbols in the formula (F1) are as follows. R is R 4 And R is 6 Each independently represents a hydrogen atomSon, halogen atom, hydroxyl group, alkyl group having 1 to 20 carbon atoms, alkoxy group having 1 to 20 carbon atoms, acyloxy group having 1 to 10 carbon atoms, aryl group having 6 to 11 carbon atoms, aralkyl group having 7 to 18 carbon atoms which may have a substituent and may have an oxygen atom between carbon atoms, -NR 7 R 8 (R 7 And R is 8 Each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, -C (=O) -R 9 (R 9 A hydrocarbon group of 1 to 25 carbon atoms which is a hydrogen atom, a halogen atom, a hydroxyl group, a hydrocarbon group which may have a substituent and may contain an unsaturated bond, an oxygen atom, a saturated or unsaturated ring structure between carbon atoms), or-NHR 10 or-SO 2 -R 10 (R 10 Each of which is a hydrocarbon group having 1 to 25 carbon atoms and having a ring structure which may be unsaturated, oxygen atom, saturated or unsaturated, and which may be substituted with a halogen atom, hydroxyl group, carboxyl group, sulfo group or cyano group), or a group (R) represented by the following formula (S) 41 And R is 42 Independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms. k is 2 or 3).
R 1 And R is 2 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring A, R 2 And R is 5 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring B, and R 1 And R is 3 May be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring C.
Mode 20 >
The filter according to any one of claims 16 to 19, wherein a protective layer is provided on a surface of the second light absorbing layer.
Mode 21 >
The filter according to mode 20, wherein the protective layer provided on the surface of the second light absorbing layer contains the same material as the matrix material.
Mode 22 >, mode
The filter according to any one of claims 20 to 21, wherein the protective layer provided on the surface of the second light absorbing layer has at least one of optical characteristics that suppress reflection of visible light, optical characteristics that reflect ultraviolet light, and optical characteristics that reflect infrared light.
Mode 23 >
The filter according to any one of claims 16 to 22, wherein the filter has the following characteristics.
(a-1) having a wavelength lambda at which the transmittance of light reaches 50% in the ultraviolet wavelength region in the range of 0 DEG to 50 DEG of the incident angle of light UV50％ The wavelength lambda UV50％ In the range of 350nm to 420 nm.
(a-2) the wavelength lambda at the incident angle of 0 DEG to the light UV50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light UV50％ The difference is 10nm or less.
(a-3) the average transmittance of the light having a wavelength of 440nm to 500nm at an incident angle of 0 DEG is 80% or more.
The average transmittance of (a-4) at a wavelength of 500nm to 600nm at an incident angle of 0 DEG is 85% or more.
(a-5) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 50% IR50％ The wavelength lambda at the incidence angle of light 0 DEG IR50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR50％ The difference is 10nm or less.
(a-6) the average transmittance of the light having a wavelength of 750nm to 1000nm at an incident angle of 0 DEG is 90% or less.
(a-7) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 20% IR20％ The wavelength lambda at the incidence angle of light 0 DEG IR20％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR20％ The difference is 5nm or less.
The international application claims priority based on japanese patent application No. 2021-121014, filed on 7/21 of 2021, the entire contents of which are incorporated herein by reference.
Description of the reference numerals
1 transparent substrate
2 first light absorbing layer
21 inorganic layer
22 pigment layer
3 second light absorbing layer
10. 20, 30, 40, 50, 60 optical filters
Claims (23)
1. A filter comprising a transparent substrate having a first main surface and a first light-absorbing layer provided on the first main surface side of the transparent substrate,
the first light absorbing layer comprises an ultraviolet absorbing pigment and an inorganic material,
the ultraviolet absorbing pigment has a maximum absorption wavelength in a wavelength range of 300nm to 430nm, and the molecular weight of the ultraviolet absorbing pigment is 2000 or less.
2. The filter according to claim 1, wherein the first light absorbing layer is formed by mixing the ultraviolet absorbing pigment and the inorganic material.
3. The filter according to claim 2, wherein the concentration of the ultraviolet absorbing pigment is different in the orthogonal direction of the first main surface.
4. The filter according to claim 1, wherein the first light absorbing layer has a pigment layer containing the ultraviolet absorbing pigment and an inorganic layer containing the inorganic material.
5. The optical filter according to claim 2 or 4, wherein the first light-absorbing layer has an average internal transmittance of 60% or less at a wavelength of 300nm to 380nm and an average internal transmittance of 80% or more at a wavelength of 430nm to 600nm,
the difference between the wavelength at which the transmittance of the first light-absorbing layer reaches 80% and the wavelength at which the transmittance reaches 20% in the ultraviolet wavelength region is 45nm or less.
6. The optical filter according to claim 1, wherein the ultraviolet absorbing pigment is selected from the group consisting of triazines, indoles, azomethines, benzotriazoles, merocyanines and benzotriazoles At least one kind of azole compound.
7. The optical filter according to claim 6, wherein the ultraviolet absorbing pigment comprises a merocyanine compound represented by the following formula (U1),
wherein the symbols in formula (U1) are as follows:
y represents R 6 And R is 7 A substituted methylene group, or an oxygen atom;
R 1 represents a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent; r is R 2 ～R 7 Each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms;
x represents any one of divalent groups represented by the following formulas (X1) to (X5) (wherein R 8 And R is 9 Each independently represents a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent, R 10 ～R 19 Each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms which may have a substituent);
8. the optical filter according to claim 7, wherein in formula (U1), R 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, a part of which may be substituted with a cycloalkyl group or a phenyl group, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
9. The optical filter according to claim 7, wherein in formula (U1), R 1 、R 8 And R is 9 Each independently is an alkyl group having 1 to 6 carbon atoms, R 2 ～R 7 And R is 10 ～R 19 Each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
10. The filter of claim 6 wherein the ultraviolet absorbing pigment is a benzoAzole compounds.
11. The filter according to claim 7, wherein the refractive index of the inorganic material is 1.38 to 2.20 at a wavelength of 500 nm.
12. The filter according to claim 11, wherein the inorganic material is at least one selected from the group consisting of silica, alumina, and magnesium fluoride.
13. The filter according to claim 12, wherein a protective layer is provided on a surface of the first light absorbing layer.
14. The filter according to claim 13, wherein the protective layer provided on the surface of the first light absorbing layer contains the same material as the inorganic material.
15. The filter according to claim 14, wherein the protective layer provided on the surface of the first light absorbing layer has at least one of optical characteristics that suppress reflection of visible light, optical characteristics that reflect ultraviolet light, and optical characteristics that reflect infrared light.
16. The filter of claim 15, wherein,
a second light absorbing layer is provided on the first main surface side of the transparent substrate,
the second light absorbing layer is formed by mixing a near infrared ray absorbing pigment and a matrix material,
the near infrared ray absorption pigment has a maximum absorption wavelength in a wavelength range of 650nm to 760 nm.
17. The filter according to claim 16, wherein the matrix material is any one selected from the group consisting of silica, alumina, magnesium fluoride, polyimide resin, polyester resin, and polycarbonate resin.
18. The optical filter according to claim 17, wherein the near infrared absorbing dye is selected from the group consisting of squaraineAt least one kind selected from the group consisting of salt compounds, phthalocyanine compounds and cyanine compounds.
19. The filter of claim 18, wherein the squaraine isThe salt compound has a structure represented by the following formula (F1),
wherein the symbols in formula (F1) are as follows: r is R 4 And R is 6 Each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an acyloxy group having 1 to 10 carbon atoms, an aryl group having 6 to 11 carbon atoms, an aralkyl group having 7 to 18 carbon atoms which may have a substituent and may have an oxygen atom between carbon atoms, -NR 7 R 8 (R 7 And R is 8 Each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, -C (=O) -R 9 (R 9 A hydrocarbon group of 1 to 25 carbon atoms which is a hydrogen atom, a halogen atom, a hydroxyl group, a hydrocarbon group which may have a substituent and may contain an unsaturated bond, an oxygen atom, a saturated or unsaturated ring structure between carbon atoms), or-NHR 10 or-SO 2 -R 10 (R 10 Each of which is a hydrocarbon group having 1 to 25 carbon atoms and having a ring structure which may be unsaturated, oxygen atom, saturated or unsaturated, and which may be substituted with a halogen atom, hydroxyl group, carboxyl group, sulfo group or cyano group), or a group (R) represented by the following formula (S) 41 And R is 42 Independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms; k is 2 or 3);
R 1 and R is 2 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring A, R 2 And R is 5 Can be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring B, and R 1 And R is 3 May be linked to each other and form together with the nitrogen atom a five-or six-membered heterocyclic ring C.
20. The filter according to claim 19, wherein a protective layer is provided on a surface of the second light absorbing layer.
21. The filter of claim 20, wherein the protective layer disposed on the surface of the second light absorbing layer comprises the same material as the matrix material.
22. The filter according to claim 21, wherein the protective layer provided on the surface of the second light absorbing layer has at least one of optical characteristics that suppress reflection of visible light, optical characteristics that reflect ultraviolet light, and optical characteristics that reflect infrared light.
23. The filter of claim 16, wherein the filter has the following characteristics:
(a-1) having a wavelength lambda at which the transmittance of light reaches 50% in the ultraviolet wavelength region in the range of 0 DEG to 50 DEG of the incident angle of light UV50％ The wavelength lambda UV50％ Is in the range of 350nm to 420 nm;
(a-2) the wavelength lambda at the incident angle of 0 DEG to the light UV50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light UV50％ The difference is 10nm or less;
(a-3) an average transmittance of 80% or more at a wavelength of 440nm to 500nm at an incident angle of 0 DEG;
(a-4) an average transmittance of 85% or more at a wavelength of 500nm to 600nm at an incident angle of 0 DEG;
(a-5) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 50% IR50％ The wavelength lambda at the incidence angle of light 0 DEG IR50％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR50％ The difference is 10nm or less;
(a-6) an average transmittance of 90% or less at a wavelength of 750nm to 1000nm at an incident angle of 0 DEG;
(a-7) having a wavelength lambda at which the transmittance of light in the infrared wavelength region reaches 20% IR20％ The wavelength lambda at the incidence angle of light 0 DEG IR20％ Said wavelength lambda at an angle of incidence of 30 DEG to the light IR20％ The difference is 5nm or less.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021121014 | 2021-07-21 | ||
| JP2021-121014 | 2021-07-21 | ||
| PCT/JP2022/027766 WO2023002923A1 (en) | 2021-07-21 | 2022-07-14 | Optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117597612A true CN117597612A (en) | 2024-02-23 |
Family
ID=84979264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280046886.6A Pending CN117597612A (en) | 2021-07-21 | 2022-07-14 | Optical filter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2023002923A1 (en) |
| CN (1) | CN117597612A (en) |
| TW (1) | TW202309560A (en) |
| WO (1) | WO2023002923A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118231432A (en) * | 2024-05-21 | 2024-06-21 | 湖北江城芯片中试服务有限公司 | Image sensor and method for manufacturing the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160002097A1 (en) * | 2013-02-25 | 2016-01-07 | Saint-Gobain Glass France | Pane arrangement with infrared-damping coating |
| CN105593712B (en) * | 2013-12-26 | 2018-08-14 | 旭硝子株式会社 | Optical filter |
| JP6201152B2 (en) * | 2014-04-01 | 2017-09-27 | 住友金属鉱山株式会社 | Heat ray shielding film, heat ray shielding transparent base material, automobile and building |
| TWM548796U (en) * | 2017-06-27 | 2017-09-11 | 白金科技股份有限公司 | Near-infrared absorbing filter and image sensor |
| JP7015128B2 (en) * | 2017-09-07 | 2022-02-02 | 株式会社日本触媒 | Optical selective transmission filter |
| JP7321700B2 (en) * | 2018-12-06 | 2023-08-07 | ホヤ レンズ タイランド リミテッド | Optical member, curable composition, and method for producing optical member |
-
2022
- 2022-07-14 WO PCT/JP2022/027766 patent/WO2023002923A1/en active Application Filing
- 2022-07-14 CN CN202280046886.6A patent/CN117597612A/en active Pending
- 2022-07-14 JP JP2023536721A patent/JPWO2023002923A1/ja active Pending
- 2022-07-19 TW TW111126969A patent/TW202309560A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118231432A (en) * | 2024-05-21 | 2024-06-21 | 湖北江城芯片中试服务有限公司 | Image sensor and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2023002923A1 (en) | 2023-01-26 |
| TW202309560A (en) | 2023-03-01 |
| WO2023002923A1 (en) | 2023-01-26 |
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