公开(公告)号：US20180127301A1

公开(公告)日：2018-05-10

申请号：US15565471

申请日：2015-06-10

Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  The University of Tokyo

Inventor： Fumio SATO ,  Tomoko YAMADA ,  Hiroyuki INOUE ,  Atsunobu MASUNO

IPC: C03B40/04 ,  C03B5/235 ,  C03B19/10

CPC classification number: C03B40/04 ,  C03B5/235 ,  C03B19/063 ,  C03B19/1005

Abstract: The development of cracks or breakage in a glass material during production of the glass material by a containerless levitation technique is reduced. A glass material is obtained by heating a levitated block 12 of glass raw material to melting by irradiation of the block 12 of glass raw material with laser light to thus obtain a molten glass and then cooling the molten glass. A first irradiation step and a second irradiation step are performed. In the first irradiation step, the levitated block 12 of glass raw material is heated to melting by irradiating the block 12 of glass raw material with the laser light. In the second irradiation step, an intensity of the laser light being applied to the molten glass is reduced and irradiation with the laser light is then stopped.

公开(公告)号：US20180072605A1

公开(公告)日：2018-03-15

申请号：US15565713

申请日：2015-06-10

Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  The University of Tokyo

Inventor： Fumio SATO ,  Tomoko YAMADA ,  Hiroyuki INOUE ,  Atsunobu MASUNO

IPC: C03B19/10 ,  C03B5/235

CPC classification number: C03B19/1005 ,  C03B5/235 ,  C03B19/063 ,  C03B40/04

Abstract: Provided is a method that enables a crystal-free glass material to be stably produced by a containerless levitation technique. A glass material 30 has a first surface 31 facing a forming surface 10a and a second surface 32 located on a side opposite to the forming surface 10a. The first surface 31 includes a central portion 31a and a peripheral portion 31b located outside of the central portion 31a. Gas is jetted through a gas jet hole at a flow velocity and a flow volume at which a glass material satisfying R2

公开(公告)号：US20150344349A1

公开(公告)日：2015-12-03

申请号：US14653415

申请日：2013-12-06

Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  THE UNIVERSITY OF TOKYO

Inventor： Fumio SATO ,  Tomoko YAMADA ,  Osamu ODANI ,  Hiroyuki INOUE ,  Atsunobu MASUNO

IPC: C03B40/04 ,  C03B23/00

CPC classification number: C03B19/1005 ,  C03B23/00 ,  C03B40/04 ,  C03C3/12 ,  C03C3/122 ,  C03C3/125 ,  C03C3/127

Abstract: Provided is a method that can manufacture a large-sized glass material by containerless levitation. A glass raw material block (13) is placed on a forming surface (11a) having a plurality of gas jet holes (12a) opened thereto, gas is jetted through the plurality of gas jet holes (12a) to hold the glass raw material block (13) levitated above the forming surface (11a), and the glass raw material block (13) held levitated above the forming surface (11a) is melted by heat and then cooled to obtain a glass material.

Abstract translation: 提供可以通过无容器悬浮制造大尺寸玻璃材料的方法。 玻璃原料块（13）被放置在具有多个开口的气体喷射孔（12a）的成形表面（11a）上，通过多个气体喷射孔（12a）喷射气体，以保持玻璃原料块 （13）悬浮在成形表面（11a）上方，并且保持悬浮在成形表面（11a）上方的玻璃原料块（13）通过加热熔化，然后冷却以获得玻璃材料。

公开(公告)号：US20220119302A1

公开(公告)日：2022-04-21

申请号：US17563760

申请日：2021-12-28

Applicant: The University of Tokyo ,  NIKON CORPORATION

Inventor： Hiroyuki INOUE ,  Atsunobu MASUNO ,  Kohei YOSHIMOTO ,  Motoi UEDA ,  Hiroshi YAMAMOTO ,  Tatsunori KAWASHIMA

IPC: C03C3/12 ,  C03C3/155 ,  G02B1/00 ,  C03C3/068 ,  C03C3/15 ,  C03C3/253 ,  C03C3/062

Abstract: Provided is optical glass containing, in terms of mol % of cations: 10 to 60% of a La3+ component; more than 0% and up to 75% of a Ga3+ component; and 5 to 75% of a Nb5+ component, in which a total amount of the La3+ component, Ga3+ component, and Nb5+ component is 60 to 100%.

公开(公告)号：US20190185369A1

公开(公告)日：2019-06-20

申请号：US16283349

申请日：2019-02-22

Applicant: The University of Tokyo ,  NIKON CORPORATION

Inventor： Hiroyuki INOUE ,  Atsunobu MASUNO ,  Kohei YOSHIMOTO ,  Motoi UEDA ,  Hiroshi YAMAMOTO ,  Tatsunori KAWASHIMA

IPC: C03C3/253 ,  C03C3/155 ,  C03C3/062

CPC classification number: C03C3/253 ,  C03C3/062 ,  C03C3/068 ,  C03C3/15 ,  C03C3/155 ,  G02B1/00

Abstract: Provided is optical glass containing, in terms of mol % of cations: 10 to 60% of a La3+ component; more than 0% and up to 75% of a Ga3+ component; and 5 to 75% of a Nb5+ component, in which a total amount of the La3+ component, Ga3+ component, and Nb5+ component is 60 to 100%.