(12) International Application Status Report

Received at International Bureau: 02 August 2017 (02.08.2017)

Information valid as of: 13 August 2018 (13.08.2018)

Report generated on: 21 July 2019 (21.07.2019)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2018/02122201 February 2018 (01.02.2018) Japanese (JA)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/JP2017/02664024 July 2017 (24.07.2017) Japanese (JA)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
2016-150155 (JP)29 July 2016 (29.07.2016) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
C03C 4/08 (2006.01); C03C 3/23 (2006.01); C03C 3/247 (2006.01); G02B 5/22 (2006.01)

(71) Applicant(s):
AGC INC. [JP/JP]; 5-1, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008405 (JP) (for all designated states)

(72) Inventor(s):
INUZUKA Nobuo; c/o AGC TECHNO GLASS CO., LTD., 3583-5, Kawashiri, Yoshida-cho, Haibaragun Shizuoka 4210302 (JP)
SAKAGAMI Takahiro; c/o AGC TECHNO GLASS CO., LTD., 3583-5, Kawashiri, Yoshida-cho, Haibaragun Shizuoka 4210302 (JP)

(74) Agent(s):
SAKURA PATENT OFFICE, P.C.; Yoshizawa Bldg., 18-14, Uchikanda 1-chome, Chiyoda-ku, Tokyo 1010047 (JP)

(54) Title (EN): OPTICAL GLASS AND NEAR-INFRARED CUT FILTER
(54) Title (FR): VERRE OPTIQUE ET FILTRE COUPE-RAYONS DANS LE PROCHE INFRAROUGE
(54) Title (JA): 光学ガラスおよび近赤外線カットフィルタ

(57) Abstract:
(EN): The present invention provides an optical glass and a near-infrared cut filter that reliably cut near-ultraviolet rays and have a high transmittance of light in the visible range (in particular, blue light). This optical glass absorbs infrared and ultraviolet rays, and is characterized in that an approximate straight line that represents the relationship between wavelength and transmittance and that is calculated in a wavelength range between 3 nm lower and 3 nm higher than a wavelength at which light transmittance is 50% in a wavelength band of 300-450 nm, has an inclination of 3 or more.
(FR): La présente invention concerne un verre optique et un filtre coupe-rayons dans le proche infrarouge qui coupent de manière fiable des rayons ultraviolets proches et qui présentent une transmittance élevée de la lumière dans la plage visible (en particulier, la lumière bleue). Ce verre optique absorbe les rayons infrarouges et ultraviolets, et est caractérisé en ce qu'une ligne droite approximative, qui représente la relation entre la longueur d'onde et la transmittance et qui est calculée dans une plage de longueurs d'onde comprise entre 3 nm inférieur et 3 nm supérieur à une longueur d'onde à laquelle la transmittance de lumière est de 50 % dans une bande de longueur d'onde de 300 à 450 nm, a une inclinaison d'au moins 3.
(JA): 近紫外線を確実にカットし、かつ可視領域の光(特に青色光)の透過率の高い光学ガラスおよび近赤外線カットフィルタの提供。赤外線および紫外線を吸収する光学ガラスであって、光学ガラスは、300nm~450nmの波長帯域で光の透過率が50%となる波長の前後3nmの波長の範囲で算出される、波長と透過率との近似直線の傾きが3以上であることを特徴とする。

International search report:
Received at International Bureau: 25 September 2017 (25.09.2017) [JP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) 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, JP, 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
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 (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG
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 Organization (EAPO) : AM, AZ, BY, KG, KZ, RU, TJ, TM