公开(公告)号：US20210171387A1

公开(公告)日：2021-06-10

申请号：US17181509

申请日：2021-02-22

Applicant: AGC Inc.

Inventor： Akira SHIBATA ,  Shinichi AMMA

IPC: C03C3/068

Abstract: Provided is an optical glass having a high refractive index and high light transmittance. The optical glass contains, in terms of mol % based on oxides, SiO2: 9.0% to 11.0%, B2O3: 22.0% to 24.0%, La2O3: 18.0% to 20.0%, and TiO2: 30.0% to 31.0%.

公开(公告)号：US20200278483A1

公开(公告)日：2020-09-03

申请号：US16876523

申请日：2020-05-18

Applicant: AGC INC.

Inventor： Shinichi AMMA ,  Tatsuo NAGASHIMA

IPC: G02B5/23 ,  G02B27/01 ,  G02C7/10

Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*≥4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|≥0.55 under A light source in a CIELab representation, and satisfying b*≥0.1.

公开(公告)号：US20230048986A1

公开(公告)日：2023-02-16

申请号：US17972043

申请日：2022-10-24

Applicant: AGC Inc.

Inventor： Akira SHIBATA ,  Shinichi AMMA

IPC: C03C4/08 ,  C03C3/068

Abstract: Glass has a refractive index of 1.55 or more, and has, in an x-ray absorption fine structure (XAFS) analysis of platinum, a peak intensity ratio expressed by Amax/Aave of 1.13 or more, where Amax denotes a maximum value of a white line within an energy range of 13,270 eV to 13,290 eV, and Aave denotes an average absorption in an energy range of 13,290 eV to 13,390 eV.

公开(公告)号：US20200325063A1

公开(公告)日：2020-10-15

申请号：US16868743

申请日：2020-05-07

Applicant: AGC Inc.

Inventor： Shinichi AMMA ,  Tatsuo NAGASHIMA

IPC: C03C3/097 ,  C03C3/064 ,  C03C3/062 ,  C03C4/02 ,  G02B1/11

Abstract: To provide optical glass having high refractive index and low density and having favorable production properties.An optical glass having refractive index (nd) of from 1.71 to 2.00, density of at most 5.0 g/cm3, a temperature at which the viscosity of the glass is log η=2 of from 750 to 1,200° C. and devitrification temperature of at most 1,300° C., and containing from 0% to 21.5% of TiO2 as represented by mol % based on oxides. The optical glass has high refractive index and low density, has favorable production properties, and is suitable as an optical member for wearable devices, for vehicles, for robots, etc.

公开(公告)号：US20210179479A1

公开(公告)日：2021-06-17

申请号：US17186953

申请日：2021-02-26

Applicant: AGC Inc.

Inventor： Shinichi AMMA ,  Kenji KITAOKA

IPC: C03C3/068 ,  C03C3/062 ,  C03C3/064 ,  C03C3/097 ,  G02B1/11 ,  C03C17/34

Abstract: An optical glass has: a refractive index (nd) of 1.81 to 2.15; a density (d) of 6.0 g/cm3 or less; a temperature T1, at which a viscosity of the glass is 101 dPa·s, of 900° C. to 1,200° C.; a devitrification temperature of 1,300° C. or lower; and a content of SiO2 of 5% to 44% in mol % based on oxides.

公开(公告)号：US20200247712A1

公开(公告)日：2020-08-06

申请号：US16853023

申请日：2020-04-20

Applicant: AGC INC.

Inventor： Shinichi AMMA ,  Tatsuo NAGASHIMA

IPC: C03C3/097 ,  G02B1/00

Abstract: An optical glass has a refractive index (nd) of 1.55 or more. A difference (Tf−Tg) between a fictive temperature (Tf) and a glass transition temperature (Tg) of the optical glass is 0° C. or more. The optical glass may have a crack initiation load L of 350 mN or more.

公开(公告)号：US20240094539A1

公开(公告)日：2024-03-21

申请号：US18388794

申请日：2023-11-10

Applicant: AGC Inc.

Inventor： Shinichi AMMA ,  Tatsuo NAGASHIMA

IPC: G02B27/01 ,  G02C7/10

CPC classification number: G02B27/0172 ,  G02C7/104

Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*≥4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*|a*|≥0.55 under A light source in a CIELab representation, and satisfying b*≥0.1.

公开(公告)号：US20210061703A1

公开(公告)日：2021-03-04

申请号：US17006199

申请日：2020-08-28

Applicant: AGC Inc.

Inventor： Akira SHIBATA ,  Shinichi AMMA

IPC: C03C3/068

Abstract: Provided is an optical glass having a high refractive index and high light transmittance. The optical glass contains, in terms of mol % based on oxides, SiO2: 9.0% to 11.0%, B2O3: 22.0% to 24.0%, La2O3: 18.0% to 20.0%, and TiO2: 30.0% to 31.0%.