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1. 发明申请

US20200216348A1 METHOD FOR PRODUCING GLASS MATERIAL AND APPARATUS FOR PRODUCING GLASS MATERIAL 审中-公开
公开(公告)号：US20200216348A1
公开(公告)日：2020-07-09
申请号：US16820905
申请日：2020-03-17
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI , Osamu ODANI
IPC分类号： C03B19/10
摘要： Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material. The method includes the steps of: preparing a forming member and a cover member 20, the forming member including a gas jetting portion 11 in which a plurality of gas jet holes 12 for use in levitating a block of glass raw material are formed, the cover member 20 which is capable of covering a peripheral portion of a gas jetting surface 13 of the gas jetting portion 12 and in which a controlling surface 21 controlling, near the peripheral portion of the gas jetting surface 13, a flow of gas jetted through the gas jet holes 12 is formed and an opening 25 capable of releasing the gas to outside is formed; placing the block of glass raw material on top of the gas jetting surface 13 and covering the peripheral portion of the gas jetting surface 13 with the cover member 20; and heating the block of glass raw material to melting while holding the block of glass raw material levitated by jetting the gas through the gas jet holes 12 and then cooling the melted block of glass raw material.

2. 发明申请

US20180002220A1 GLASS MATERIAL AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：US20180002220A1
公开(公告)日：2018-01-04
申请号：US15704126
申请日：2017-09-14
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： C03C3/19 , C03C3/15 , C03C3/068 , G02F1/00 , C03B19/06
CPC分类号： C03C3/15 , C03B19/06 , C03B19/063 , C03B19/1005 , C03B40/04 , C03C3/068 , C03C3/095 , C03C3/125 , C03C3/19 , C03C4/00 , G02F1/0036
摘要： Provided is a glass composition that exhibits greater Faraday effect than ever before. A glass composition contains 48% or more of Tb2O3 (exclusive of 48%) in % by mole.

3. 发明申请

US20230083317A1 GLASS MATERIAL 有权
公开(公告)号：US20230083317A1
公开(公告)日：2023-03-16
申请号：US17798117
申请日：2021-03-23
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI , Tadahito FURUYAMA
IPC分类号： C03C3/068 , C03C3/15 , C03C4/08
摘要： Provided is a glass material having a high light transmittance in a short wavelength range and easily producible. A glass material contains, in terms of % by mole, 5 to less than 30% Pr2O3 and 0.1 to 95% B2O3.

4. 发明申请

US20210231983A1 FARADAY ROTATOR AND MAGNETO-OPTICAL ELEMENT 有权
公开(公告)号：US20210231983A1
公开(公告)日：2021-07-29
申请号：US17053365
申请日：2019-04-08
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： G02F1/09 , G02F1/00
摘要： Provided are a Faraday rotator and a magneto-optical device which stably provide a Faraday rotation angle of 45° and achieve further size reduction. A Faraday rotator comprises: a magnetic circuit 2 including first to third magnetic materials 11 to 13 each provided with a through hole through which light passes; and a Faraday element 14 disposed in the through hole 2a and made of a paramagnetic material capable of transmitting light therethrough, wherein when a direction where light passes through the through hole 2a is defined as a direction of an optical axis, the first magnetic material 11 is magnetized in a direction perpendicular to the direction of the optical axis to have a north pole located toward the through hole, the second magnetic material 12 is magnetized in a direction parallel to the direction of the optical axis to have a north pole located toward the first magnetic material 11, and the third magnetic material 13 is magnetized in a direction perpendicular to the direction of the optical axis to have a south pole located toward the through hole, a length of the second magnetic material 12 along the direction of the optical axis is equal to or more than 0.5 times a length of the Faraday element 14 along the direction of the optical axis, and the first and third magnetic materials 11, 13 are shorter than the length of the second magnetic material 12 along the direction of the optical axis.

5. 发明申请

US20210165252A1 FARADAY ROTATOR AND MAGNETO-OPTICAL ELEMENT 有权
公开(公告)号：US20210165252A1
公开(公告)日：2021-06-03
申请号：US17048117
申请日：2019-03-07
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： G02F1/09 , C03C3/15 , C03C4/00 , G02B27/28
摘要： Provided are a Faraday rotator and a magneto-optical device which stably provide a Faraday rotation angle of 45° and achieve further size reduction. A Faraday rotator comprises: a magnetic circuit 2 including first to third magnetic materials 11 to 13 each provided with a through hole through which light passes; and a Faraday element 14 disposed in the through hole 2a and made of a paramagnetic material capable of transmitting light therethrough, wherein the magnetic circuit 2 is formed by coaxial arrangement of the first to third magnetic materials 11 to 13 in this order in a front-to-rear direction, when a direction where light passes through the through hole 2a is defined as a direction of an optical axis, the first magnetic material 11 is magnetized in a direction perpendicular to the direction of the optical axis to have a north pole located toward the through hole, the second magnetic material 12 is magnetized in a direction parallel to the direction of the optical axis to have a north pole located toward the first magnetic material 11, and the third magnetic material 13 is magnetized in a direction perpendicular to the direction of the optical axis to have a south pole located toward the through hole, and a length of the Faraday element 14 along the direction of the optical axis is shorter than a length of the second magnetic material 12 along the direction of the optical axis.

6. 发明申请

US20190210912A1 GLASS MATERIAL AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：US20190210912A1
公开(公告)日：2019-07-11
申请号：US16331563
申请日：2017-08-18
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： C03C3/19 , C03C3/17 , C03C3/15
摘要： Provided is a glass material that can satisfy both a high Faraday effect and a high light transmittance in a short wavelength range. A glass material contains, in % by mole, 30 to 50% Pr2O3 and 0.1 to 70% B2O3+P2O5.

7. 发明申请

US20170226002A1 GLASS MATERIAL AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：US20170226002A1
公开(公告)日：2017-08-10
申请号：US15503012
申请日：2016-01-22
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： C03C3/19 , G02F1/00 , C03B19/06 , C03C3/15 , C03C3/068
CPC分类号： C03C3/15 , C03B19/06 , C03B19/063 , C03B19/1005 , C03B40/04 , C03C3/068 , C03C3/095 , C03C3/125 , C03C3/19 , C03C4/00 , G02F1/0036
摘要： Provided is a glass composition that exhibits greater Faraday effect than ever before. A glass composition contains 48% or more of Tb2O3 (exclusive of 48%) in % by mole.

8. 发明申请

US20200033647A1 MAGNETO-OPTIC ELEMENT AND METHOD FOR PRODUCING SAME 审中-公开
公开(公告)号：US20200033647A1
公开(公告)日：2020-01-30
申请号：US16335692
申请日：2017-09-07
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： G02F1/09 , C03B23/203 , C03B23/207 , G02F1/01 , C03C3/068 , C03C3/15 , C03C4/00
摘要： Provided is a magneto-optic element that enables easy size reduction of an optical isolator. A magneto-optic element is formed of two or more magnetic members joined together.

9. 发明申请

US20190389761A1 GLASS MATERIAL AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：US20190389761A1
公开(公告)日：2019-12-26
申请号：US16478510
申请日：2018-02-16
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： C03C3/068 , C03C23/00
摘要： Provided is a glass material having high light transmittance at operating wavelengths. A glass material containing, in terms of oxide by mole %, 5 to 40% Tb2O3 and being substantially free of Sb2O3 and As2O3, wherein a proportion of Tb3+ to a total amount of Tb is 55% by mole or more.

10. 发明申请

US20190278113A1 MAGNETO-OPTIC ELEMENT 审中-公开
公开(公告)号：US20190278113A1
公开(公告)日：2019-09-12
申请号：US16347284
申请日：2017-10-30
申请人： NIPPON ELECTRIC GLASS CO., LTD.
发明人： Futoshi SUZUKI
IPC分类号： G02F1/09 , G02F1/00 , C03C3/16 , C03C4/00 , G02B27/28 , G02B5/30 , C03B19/06
摘要： Provided is a magneto-optic element that enables size reduction of an optical isolator without damaging the magneto-optic element even if the diameter of the magneto-optic element is reduced. A magneto-optic element is made of a columnar glass material with a diameter of 20 mm or less and has a laser damage threshold of 10 J/cm2 or more.

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