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1. (WO2009133889) OPTICAL GLASS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/133889    International Application No.:    PCT/JP2009/058358
Publication Date: 05.11.2009 International Filing Date: 28.04.2009
C03C 4/00 (2006.01), C03C 3/062 (2006.01), C03C 3/064 (2006.01), C03C 3/066 (2006.01), C03C 3/068 (2006.01), C03C 3/12 (2006.01), C03C 3/14 (2006.01), C03C 3/145 (2006.01), C03C 3/15 (2006.01), C03C 3/155 (2006.01), G02B 1/00 (2006.01)
Applicants: OHARA INC. [JP/JP]; 15-30, Oyama 1-chome, Chuo-ku, Sagamihara-shi, Kanagawa 2525286 (JP) (For All Designated States Except US).
NAGAOKA, Atsushi [JP/JP]; (JP) (For US Only)
Inventors: NAGAOKA, Atsushi; (JP)
Agent: SHOBAYASHI, Masayuki; Takase Bldg. 25-8, Higashi-ikebukuro 1-chome Toshima-ku, Tokyo 1700013 (JP)
Priority Data:
2008-117956 29.04.2008 JP
(JA) 光学ガラス
Abstract: front page image
(EN)Provided is a Bi2O3-containing optical glass whereof the Abbe number [νd] has a characteristic value while a very large partial dispersion ratio [θg, F] is maintained. The optical glass which includes at least 45% of a Bi2O3 component as a mass% based on the oxides has a partial dispersion ratio [θg, F] of at least 0.63 and an Abbe number of not more than 27.  The total content of the Bi2O3 component, BaO component, ZnO component, B2O3 component, SiO2 component and Sb2O3 component as a mass% based on the oxides is preferably less than 96%.  Furthermore, the ratio of the B2O3 component with respect to the Bi2O3 component as a mass% based on the oxides is preferably less than 0.20.
(FR)La présente invention concerne un verre optique contenant du Bi2O3, dont le nombre d’Abbe [nd] a une valeur caractéristique alors que son rapport de dispersion partielle [qg, F] est maintenu très grand. Le verre optique, qui comprend au moins 45 % d’un composant Bi2O3 en pourcentage en masse basé sur les oxydes, présente un rapport de dispersion partielle [qg, F] d’au moins 0,63 et un nombre d’Abbe inférieur ou égal à 27. La teneur totale du composant Bi2O3, du composant BaO, du composant ZnO, du composant B2O3, du composant SiO2 et du composant Sb2O3, en pourcentage en masse basé sur les oxydes, est de préférence inférieure à 96 %. De plus, le rapport du composant B2O3 sur le composant Bi2O3 en pourcentage en masse basé sur les oxydes est de préférence inférieur à 0,20.
(JA) 本発明の課題は、Biを含有する光学ガラスにおいて、極めて大きい部分分散比[θg,F]を維持しつつ、アッベ数[νd]が特徴的な値を有する光学ガラスを提供することである。 光学ガラスは、酸化物基準の質量%でBi成分を45%以上含有し、部分分散比[θg,F]が0.63以上、アッベ数が27以下である。酸化物基準の質量%でBi成分,BaO成分,ZnO成分,B成分,SiO成分,Sb成分の含有量の総和が96%未満であることが好ましい。また、酸化物基準の質量%で、Bi成分に対するB成分の比が、0.20未満であることがより好ましい。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)