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公开(公告)号：JPH0656463A
公开(公告)日：1994-03-01
申请号：JP21768392
申请日：1992-08-17
Applicant: SUMITA OPTICAL GLASS
Inventor： HIRATA KAZUMI , KOMIYA MASAYUKI , NAGAHAMA SHINOBU
Abstract: PURPOSE:To provide an optical glass suitable for precision press molding, having a refractive index and a specific gravity similar to those of SF8 or in an allowable range, providing a preform material by dripping at
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公开(公告)号：JPH05193978A
公开(公告)日：1993-08-03
申请号：JP854192
申请日：1992-01-21
Applicant: SUMITA OPTICAL GLASS
Inventor： OTSUKA MASAAKI , KOMIYA MASAYUKI , NAGAHAMA SHINOBU , SAWANOBORI SHIGETO
Abstract: PURPOSE:To provide optical glass capable of precision press forming at a low temp. and having very satisfactory chemical durability and such optical constants as a specified refractive index and a specified Abbe's number. CONSTITUTION:This optical glass for precision press forming has a compsn. consisting of, by weight, 23-30%, in total, of 2-13% SiO2 and 11-25% B2O3, 5-30% LaF3, 4-13% Gd2O3, 4-13% Y2O3, 22-45% BaF2, 0.5-8%, in total, of 0-6% Li2O and 0-8% LiF and has =57 Abbe's number (nud), satisfactory chemical durability and a low softening point.
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公开(公告)号：JPH02263728A
公开(公告)日：1990-10-26
申请号：JP1491589
申请日：1989-01-24
Applicant: SUMITA OPTICAL GLASS
Inventor： KOMIYA MASAYUKI , OTSUKA MASAAKI , SAWANOBORI SHIGETO , NAGAHAMA SHINOBU
Abstract: PURPOSE:To obtain optical glass containing no lead oxide and suitable for precision press by specifying the composition, refractive index, Abbe number and yield temp. CONSTITUTION:Raw material such as oxides, hydroxides, carbonates, nitrates, etc., for desired components are weighed out by desired properties, put into a platinum crucible and molten and 1000 to 1300 deg.C with stirring. Then, the molten material is molded in a die and slowly cooled to obtain the optical glass having 1.69 to 1.74 refractive index, 35 to 40 Abbe number and
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公开(公告)号：JPH02124740A
公开(公告)日：1990-05-14
申请号：JP25235088
申请日：1988-10-06
Applicant: SUMITA OPTICAL GLASS
Inventor： KOMIYA MASAYUKI , OTSUKA MASAAKI , SAWANOBORI SHIGETO , NAGAHAMA SHINOBU
Abstract: PURPOSE:To industrially and stably produce the title glass having a specified refractive index, a specified Abbe's number, specified anomalous dispersibility and satisfactory optical durability by using metaphosphates, fluorides and oxides of rare earth elements satisfying a specified compsn. CONSTITUTION:This optical glass consists of, by weight, 20-32%, in total, of 15-32% Al(PO3)3, 0-10% Ba(PO3)2, 0-10% Sr(PO3)2, 0-10% Ca(PO3)2 and 0-10% Mg(PO3)3 (metaphosphates), 55-75%, in total, of 20-70% BaF2, 5-40% SrF2, 0-15% CaF2, 0-10% MgF2, 0-5% AlF3 and 0-5% GdF3 (fluorides) and 5-22%, in total, of 5-22% Gd2O3, 0-7% La2O3, 0-10% Y2O3 and 0-10% Yb2O3 (oxides of rare earth elements) and has such optical characteristic values as 1.54-1.60 refractive index (nd) and 68-75 Abbe's number (nud) and anomalous dispersibility represented by >=0.537 partial dispersion ratio.
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公开(公告)号：JPH01148726A
公开(公告)日：1989-06-12
申请号：JP30708787
申请日：1987-12-04
Applicant: SUMITA OPTICAL GLASS
Inventor： KOMIYA MASAYUKI , BABA NOBUYOSHI , NAGAHAMA SHINOBU
IPC: C03C3/062
Abstract: PURPOSE:To obtain an optical glass composition for precision press molding lens possible to be precisely pressed at a low temp., eliminating the need for grainding or polishing after pressing, by using SiO2, TiO2, Nb2O5, Na2O and Cs2O as essential component in a specified compsn. CONSTITUTION:The optical glass having following compsn and characteristics is optical glass for precision press molding lens having low specific gravity. The optical glass consists of 20-26%, in wt.%, SiO2, 0-15% B2O3, 14-30% TiO2, 14-22% Nb2O5 and besides, 30-52% TiO2+Nb2O5 and 3-18% Na2O, 8-23% Cs2O, 0-23% Li2O, 0-8% K2O and besides, 25-37% Na2O+Cs2O+Li2O +K2O. And, the optical glass has
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Patent Agency Ranking
公开(公告)号：JPS63166736A
公开(公告)日：1988-07-09
申请号：JP16450086
申请日：1986-07-12
Applicant: SUMITA OPTICAL GLASS
Inventor： SAWANOBORI SHIGETO , YAMAUCHI JUNYA , NAGAHAMA SHINOBU
Abstract: PURPOSE:To provide a crystallized glass composed of a specific glass composition, having high meltability of the glass and excellent chemical machinability, i.e. large crystallization temperature difference between a part irradiated with ultraviolet ray and a non-irradiated part and giving a crystallized final product having a specific thermal expansion coefficient. CONSTITUTION:The objective glass is composed of 55-70wt.% SiO2, 8-12% Li2O, 12-20% Al2O3, 0-3% Na2O, 2-5% K2O, 0-2% Cs2O, 1-3% BaO and 0-4% ZnO and containing 0.001-0.03% CeO2 and 0.05-0.1% Ag or 0.0005-0.02% Au as photosensitive components. The glass is sensitive to ultraviolet ray to effect the selective crystallization of the ultraviolet irradiated part by the heat-treatment at 500-600 deg.C. The crystallized product produced by the heat-treatment at 800-900 deg.C to precipitate fine crystals in the glass has a thermal expansion coefficient of 40-70X10 / deg.C.
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公开(公告)号：JPS62123040A
公开(公告)日：1987-06-04
申请号：JP26331185
申请日：1985-11-22
Applicant: SUMITA OPTICAL GLASS
Inventor： KOMIYA MASAYUKI , UEDA KAZUYUKI , NAGAHAMA SHINOBU
IPC: C03C3/068
Abstract: PURPOSE:To obtain the aimed optical glass for lenses precisely pressable at a relatively low temperature, by specifying a composition, consisting essentially of SiO2, B2O3, Li2O, BaO and La2O3 and further containing Na2O, K2O, SrO, ZnO, Gd2O3 and Yb2O3. CONSTITUTION:An optical glass for lenses consisting of 20-40wt% SiO2, 10-20wt% B2O3, 3-9wt% Li2O, 0-10wt% Na2O, 0-7wt% K2O, provided that the total of Li2O, Na2O and K2O is 9-18wt%, 0-11wt% SrO, 13-45wt% BaO, 0-5wt% ZnO, 5-18wt% La2O3, 0-5wt% Gd2O3 and 0-5wt% Yb2O3 and having =50 Abbe's number (nud) and relatively low softening point and further characteristic of medium refractive index and low dispersion. The optical glass is stable to devitrification and can be precisely pressed at a relatively low temperature without requiring grinding or polishing after press forming.
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公开(公告)号：JP2007157764A
公开(公告)日：2007-06-21
申请号：JP2005346839
申请日：2005-11-30
Applicant: Sumita Optical Glass Inc , 株式会社住田光学ガラス
Inventor： YAMAZAKI MASAAKI , ISHII OSAMU , SAWANOBORI SHIGETO , NAGAHAMA SHINOBU
CPC classification number: H01S3/067 , B82Y20/00 , G02B6/03627 , G02F1/133602 , H01S3/08086 , H01S3/0941 , H01S3/1613 , H01S3/173 , H01S5/34333
Abstract: PROBLEM TO BE SOLVED: To realize the reduction of cost and downsizing of an entire apparatus, to prevent damage and deterioration of an optical fiber, and to make desired blue light as a light emitted from the optical fiber. SOLUTION: The multi-wavelength laser light source is provided with a blue semiconductor laser device 2 to emit an excitation light (a) and a fluorescent fiber 17 which enters the excitation light (a) from the blue semiconductor laser device to the end face of one side, and emits it from the end face of the other side. The fluorescent fiber 17 is provided with dichroic mirrors on the respective fiber end faces to form a laser resonator 3, and its core is formed by a wavelength conversion member which contains in a low phonon glass at least praseodymium ions as a trivalent rare-earth ion that emits a wavelength conversion light by being excited by the excitation light (a). COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：为了实现整个装置的成本降低和尺寸减小，防止光纤的损坏和劣化，并且使得期望的蓝光作为从光纤发出的光。 解决方案：多波长激光光源设置有蓝色半导体激光装置2，以发射激发光（a）和从蓝色半导体激光装置进入激发光（a）的荧光纤维17 一侧的端面，并从另一侧的端面发射。 荧光纤维17在各个光纤端面设置有分色镜，以形成激光谐振器3，其核心由波长转换构件形成，该波长转换构件在低声子玻璃中含有至少镨离子作为三价稀土离子 其通过被激发光（a）激发而发射波长转换光。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2004244226A
公开(公告)日：2004-09-02
申请号：JP2003032413
申请日：2003-02-10
Applicant: Sumita Optical Glass Inc , 株式会社住田光学ガラス
Inventor： TAKAKU HIDEAKI , NAGAHAMA SHINOBU , SAWANOBORI SHIGETO
Abstract: PROBLEM TO BE SOLVED: To provide a glass for a communication package window which has a coefficient of thermal expansion near to that of a metallic communication package used for optical communication, excellent mechanical and chemical strength and practically sufficient stability.
SOLUTION: The glass for the communication package window composed of a SiO
2 -B
2 O
3 -Al
2 O
3 based glass and containing Ta
2 O
3 as an essential ingredient and a large quantity of alkaline earth oxides or rare element oxides has (I) ≥1,650°C glass transition temperature (Tg), (II) a refractive index (nd) of ≥1.585 in (d) ray, (III) 45-55×10
-7 /°C coefficient of thermal expansion (α
30-400°C ), (IV) ≥70 GPa Young's modulus and (V) ≥550 kgf/mm
2 Vickers hardness.
COPYRIGHT: (C)2004,JPO&NCIPI-
公开(公告)号：JP2001058845A
公开(公告)日：2001-03-06
申请号：JP23398999
申请日：1999-08-20
Applicant: SUMITA OPTICAL GLASS
Inventor： NAKAHATA KOJI , TSUCHIYA KOICHI , NAGAHAMA SHINOBU
Abstract: PROBLEM TO BE SOLVED: To obtain the subject optical glass of high refractive index and high dispersion, having low-melting property, slightly discolorable, excellent in mass productivity, containing no components such as lead oxide and tellurium oxide at all which are harmful to the environment and human health while having effect of easily lowering the melting point of glass. SOLUTION: This optical glass comprises 14-31 wt.% P2O5, 0-5 wt.% B2O3 and 0-14 wt.% GeO2, wherein P2O5, B2O3 and GeO3 totaling at 14-35 wt.%, 0-6 wt.% Li2O and 2.5-14 wt.% Na2O, wherein Li2O and Na2O totaling at 2.5-15 wt.%, 22-50 wt.% Nb2O5, 0-30 wt.% WO3, 5-36 wt.% Bi2O3 and 0-22 wt.% Bad, having a yield temperature (At) of =1.83 and Abbe number (νd) of
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