公开(公告)号：US20220064051A1

公开(公告)日：2022-03-03

申请号：US17523515

申请日：2021-11-10

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO ,  Motoi UEDA ,  Hiroshi YAMAMOTO ,  Tatsunori KAWASHIMA

IPC: C03C3/068

Abstract: An optical glass includes, in terms of mol % of cations, a total amount of La3+, Y3+, and Gd3+ components falling within a range of from 5% to 65% and a total amount of Zr4+, Hf4+, and Ta5+ components falling within a range of from 5% to 65%, and a relationship expressed in Expression (1) given below is satisfied. (La3++Y3++Gd3+)×(Zr4++Hf4++Ta5+)≥400 (%)2

公开(公告)号：US20200223739A1

公开(公告)日：2020-07-16

申请号：US16823860

申请日：2020-03-19

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO ,  Motoi UEDA ,  Hiroshi YAMAMOTO ,  Tatsunori KAWASHIMA

IPC: C03C3/068

Abstract: An optical glass includes, in terms of mol % of cations, a total amount of La3+, Y3+, and Gd3+ components falling within a range of from 5% to 65% and a total amount of Zr4+, Hf4+, and Ta5+ components failing within a range of from 5% to 65%, and a relationship expressed in Expression (1) given below is satisfied. (La3++Y3++Gd3+)×(Zr4+Hf4++Ta3+) ≥400(%)2

公开(公告)号：US20230365455A1

公开(公告)日：2023-11-16

申请号：US18225481

申请日：2023-07-24

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO ,  Miki FUJIWARA

IPC: C03C3/12 ,  C03C3/14 ,  C03C3/16 ,  C03C3/21 ,  C03C3/062 ,  C03C3/066 ,  C03B5/16

CPC classification number: C03C3/122 ,  C03C3/14 ,  C03C3/16 ,  C03C3/21 ,  C03C3/125 ,  C03C3/062 ,  C03C3/066 ,  C03B5/16 ,  G01N2223/3037

Abstract: A glass composition includes, as main content components, by mass %, a TeO2 content percentage of 50% to 80%, a Bi2O3 content percentage of 0% to 30%, a WO3 content percentage of 0% to 30%, a ZnO content percentage of 0% to 30%, a BaO content percentage of 0% to 30%, a GeO2 content percentage of 0% to 30%, and a Ga2O3 content percentage of 0% to 30%, wherein at least any one of additive target elements is introduced, the additive target elements including, Si4+ of 1 mg/kg to 1,500 mg/kg, B3+ of 1 mg/kg to 1,500 mg/kg, P5+ of 1 mg/kg to 1,500 mg/kg, Li+ of 1 mg/kg to 1,500 mg/kg, Na+ of 1 mg/kg to 1,500 mg/kg, K+ of 1 mg/kg to 1,500 mg/kg, Mg2+ of 1 mg/kg to 1,500 mg/kg, Ca2+ of 1 mg/kg to 1,500 mg/kg, Al3+ of 1 mg/kg to 1,500 mg/kg, and Sr2+ of 1 mg/kg to 1,500 mg/kg.

公开(公告)号：US20230286848A1

公开(公告)日：2023-09-14

申请号：US18200681

申请日：2023-05-23

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO

IPC: C03B5/23 ,  C03B40/04

CPC classification number: C03B5/23 ,  C03B40/04

Abstract: A holding member is used in a glass manufacturing apparatus that cools down a glass raw material that has been levitated by gas and has been heated and melted, and manufactures glass. The holding member includes a gas injection surface that includes a plurality of injection ports from which the gas is injected. The gas injection surface includes a first region and a second region, the first region including first injection ports that are some injection ports of the plurality of injection ports, the second region including second injection ports that are different from the first injection ports from among the plurality of injection ports. The first region is located inside the second region, when the gas injection surface is viewed from the top. An area of the injection ports per unit area of the first region is smaller than the area of the injection ports per the unit area of the second region. The area of the injection ports per the unit area of the first region is a ratio of the total of cross-sectional areas of the first injection ports to the area of the first region when the gas injection surface is viewed from the top. The area of the injection ports per the unit area of the second region is the ratio of the total of cross-sectional areas of the second injection ports to the area of the second region when the gas injection surface is viewed from the top.

公开(公告)号：US20240116798A1

公开(公告)日：2024-04-11

申请号：US18538353

申请日：2023-12-13

Applicant: NIKON CORPORATION

Inventor： Shuhei TAKASU ,  Kohei YOSHIMOTO

IPC: C03C3/068 ,  G02B1/02

CPC classification number: C03C3/068 ,  G02B1/02 ,  C03C2201/10 ,  C03C2201/3417 ,  C03C2201/42

Abstract: An optical glass comprising: by cation %, more than 0% and up to 40% of a content rate of La3+; 15% to 65% of a content rate of Ti4+; and more than 0% and up to 20% of a content rate of Zr4+; wherein a refractive index (nd) with respect to a d-line is from 2.00 to 2.35.

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：US20220162112A1

公开(公告)日：2022-05-26

申请号：US17540787

申请日：2021-12-02

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO

IPC: C03C3/062

Abstract: Provided is an optical glass including: by mol % of a cation, 5% to 20% of a content rate of Si4+; 18% to 35% of a content rate of Al3+; 15% to 50% of a total content rate of La3+, Y3+, and Gd3+; 2% to 15% of a content rate of Zr4+; and 8% to 30% of a content rate of Ta4+, wherein a ratio of the content rate of Al3+ to a total content rate of Si3+ and Al3+ (Al3+/(Si4++Al3+) is from 0.5 to 0.85.

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%.

公开(公告)号：US20170152172A1

公开(公告)日：2017-06-01

申请号：US15428691

申请日：2017-02-09

Applicant: NIKON CORPORATION

Inventor： Kohei YOSHIMOTO ,  Hiroshi YAMAMOTO

IPC: C03C3/19

CPC classification number: C03C3/19 ,  C03C3/064 ,  C03C3/068 ,  G02B1/00

Abstract: An optical glass which is suitable for mold press molding. The optical glass contains, in weight %, 10-25% of B2O3, 30-60% of P2O5, 0-5% of Al2O3, 0.1-10% of Li2O, 0-15% of SrO, 10-50% of BaO, 0-12% of ZnO, 0-5% of Y2O3 and 0-5% of Gd2O3, while not containing La2O3.