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1. (WO2018003756) INFRARED RAY CUT FILTER AND IMAGING OPTICAL SYSTEM
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Pub. No.: WO/2018/003756 International Application No.: PCT/JP2017/023451
Publication Date: 04.01.2018 International Filing Date: 26.06.2017
IPC:
G02B 5/28 (2006.01) ,B32B 7/02 (2006.01) ,G02B 5/26 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
20
Filters
28
Interference filters
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
7
Layered products characterised by the relation between layers, i.e. products essentially comprising layers having different physical properties or products characterised by the interconnection of layers
02
in respect of physical properties, e.g. hardness
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
20
Filters
26
Reflecting filters
Applicants:
日本板硝子株式会社 NIPPON SHEET GLASS COMPANY, LIMITED [JP/JP]; 東京都港区三田三丁目5番27号 5-27, Mita 3-chome, Minato-ku, Tokyo 1086321, JP
Inventors:
新毛 勝秀 SHIMMO Katsuhide; JP
久保 雄一郎 KUBO Yuichiro; JP
蔡 雷 CAI Lei; JP
Agent:
鎌田 耕一 KAMADA Koichi; JP
西尾 光彦 NISHIO Mitsuhiko; JP
Priority Data:
2016-12987830.06.2016JP
Title (EN) INFRARED RAY CUT FILTER AND IMAGING OPTICAL SYSTEM
(FR) FILTRE DE COUPURE DE RAYON INFRAROUGE ET SYSTÈME OPTIQUE D'IMAGERIE
(JA) 赤外線カットフィルタ及び撮像光学系
Abstract:
(EN) An infrared ray cut filter (1a) is provided with a near-infrared ray reflection film (20); and an absorption film (30). The near-infrared ray reflection film (20) and the absorption film (30) have characteristics (A) to (E): (A) 700nm≤λHR (0°, 70%)<λHR (0°, 20%)≤770nm; (B) 650nm≤λHR (40°, 70%)<λHR (40°, 20%)≤720nm; (C) λHA (40°, 20%)<λHR (40°, 20%); (D) the spectral transmittance of a light incident on the absorption film (30) is 15% or less at λHR (0°, 20%) and λHR (40°, 20%); and (E) the average value of the spectral transmittances of light incident on the near-infrared ray reflection film (20) and the absorption film (30) within the wavelength range of 450-600 nm is 75% or larger.
(FR) Un filtre de coupure de rayon infrarouge (1a) est pourvu d'un film de réflexion de rayon proche infrarouge (20); et d'un film d'absorption (30). Le film de réflexion de rayon proche infrarouge (20) et le film d'absorption (30) ont des caractéristiques (A) à (E): A) 700nm≤λH R (0°, 70%)<λH R (0°, 20%)≤770nm; (B) 650nm≤λH R (40°, 70%)<λH R (40°, 20%)≤720nm; (C) λH A (40°, 20%)<λH R (40°, 20%); (D) la transmittance spectrale d'une lumière incidente sur le film d'absorption (30) est de 15% ou moins à λH R (0°, 20%) and λH R (40°, 20%); et (E) la valeur moyenne des transmittances spectrales de la lumière incidente sur le film de réflexion de rayons proche infrarouge (20) et le film d'absorption (30) dans la gamme de longueurs d'onde de 450 à 600 nm est de 75% ou plus.
(JA) 赤外線カットフィルタ(1a)は、近赤外線反射膜(20)と、吸収膜(30)とを備える。近赤外線反射膜(20)及び吸収膜(30)は(A)~(E)の特性を有する。(A)700nm≦λHR(0°,70%)<λHR(0°,20%)≦770nm、(B)650nm≦λHR(40°,70%)<λHR(40°,20%)≦720nm、(C)λHA(40°,20%)<λHR(40°,20%)、(D)吸収膜(30)に入射する光の分光透過率は、λHR(0°,20%)及びλHR(40°,20%)において15%以下である。(E)近赤外線反射膜(20)及び吸収膜(30)に入射する光の分光透過率の450~600nmの波長範囲における平均値は75%以上である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)