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：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：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