-
公开(公告)号：US20230167019A1
公开(公告)日：2023-06-01
申请号：US17920806
申请日：2021-03-24
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA
CPC classification number: C03C21/002 , C03C3/068
Abstract: Provided is a chemically strengthened optical glass with improved crack resistance and high hardness, in which the refractive index and the Abbe number required for a conventional optical glass are maintained.
The chemically strengthened optical glass includes a compressive stress layer on a surface, and contains, by mass % in terms of oxide: 2.0 to 20.0% of a SiO2 component, 5.0 to 35.0% of a B2O3 component, 20.0 to 60.0% of a La2O3 component, 2.0 to 25.0% of a TiO2 component, 2.0 to 15.0% of a Nb2O5 component, and more than 0% to 10.0% of a LiO2 component, and the chemically strengthened optical glass is characterized in that an Hv change rate defined as [(Hvafter−Hvbefore)/Hvbefore]×100 is equal to or greater than 3.0%.-
公开(公告)号：US20230133650A1
公开(公告)日：2023-05-04
申请号：US17913440
申请日：2021-03-15
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA
IPC: C03C3/062
Abstract: Provided is a chemically strengthened optical glass with improved crack resistance and high hardness, in which the refractive index, the Abbe number, and the transmittance required for a conventional optical glass are maintained.
The chemically strengthened optical glass includes a compressive stress layer on a surface, and contains, by mass % in terms of oxide: 20.0% to 50.0% of a SiO2 component, 10.0% to 45.0% of a TiO2 component, and 0.1 to 20.0% of a Na2O component, and the chemically strengthened optical glass is characterized in that an Hv change rate defined as [(Hvafter−Hvbefore)/Hvbefore]×100 is equal to or greater than 3.0%.-
公开(公告)号：US20240010546A1
公开(公告)日：2024-01-11
申请号：US18024491
申请日：2021-08-23
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA , KOHEI OGASAWARA , TOSHITAKA YAGI
IPC: C03C10/00
CPC classification number: C03C10/0009 , C03C10/0054 , C03C2204/00
Abstract: Provided is an inorganic composition article that is hard and highly transparent. The inorganic composition article includes at least one type selected from α-cristobalite and an α-cristobalite solid solution as a main crystal phase, has a coloring degree λ80 of 330 to 580 nm at a thickness of 10 mm, and has a Vickers hardness of 620 or more.
-
公开(公告)号：US20220411320A1
公开(公告)日：2022-12-29
申请号：US17780523
申请日：2020-09-18
Applicant: OHARA INC.
Inventor： TOSHITAKA YAGI , SAYA KIKKAWA
Abstract: A glass ceramic for an optical filter and an optical filter are obtained that have both thermal expansion characteristics for preventing refractive index fluctuations at a usage temperature of a filter member and mechanical characteristics considering durability, and further have excellent workability.
An internal transmittance of the glass ceramic for an optical filter is 0.970 or more with respect to light having a wavelength of 1550 nm when a thickness of the glass ceramic is 1 mm. The glass ceramic includes, by mass % in terms of oxide, 40.0% to 70.0% of a SiO2 component, 11.0% to 25.0% of an Al2O3 component, 5.0% to 19.0% of a Na2O component, 0% to 9.0% of a K2O component, 1.0% to 18.0% of one or more components selected from a MgO component and a ZnO component, 0% to 3.0% of a CaO component, and 0.5% to 12.0% of a TiO2 component.-
公开(公告)号：US20250128979A1
公开(公告)日：2025-04-24
申请号：US18834606
申请日：2023-01-31
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA , TOSHITAKA YAGI , KOHEI OGASAWARA
Abstract: This inorganic composition article is characterized by: being obtained by tempering a crystallized glass which contains, as the main crystal phase thereof, at least one selected from α-cristobalite and an α-cristobalite solid solution, and in which, when expressed as mass % of respective oxides, the contained amount of component SiO2 is not less than 45.0% but less than 68.0%, the contained amount of component Al2O3 is 3.0-15.0%, the contained amount of the component Li2O is 3.0-10.0%, the contained amount of component B2O3 is more than 0% but not more than 10.0%, the contained amount of component P2O5 is more than 0% but not more than 10.0%, the contained amount of the component ZrO2 is more than 0% but not more than 10.0%; and the mass ratio of SiO2/(B2O3+Li2O) is 3.0-10.0; having a compressive stress layer on the surface thereof; and having a softening point (SP) of lower than 795° C.
-
Patent Agency Ranking
公开(公告)号：US20250100924A1
公开(公告)日：2025-03-27
申请号：US18713168
申请日：2022-10-05
Applicant: OHARA INC.
Inventor： TOSHITAKA YAGI , KOHEI OGASAWARA , SAYA KIKKAWA , AYANO MORI
Abstract: Provided is an inorganic composition article obtained by reinforcing a crystallized glass and having a compressive stress layer on the surface, the compressive stress at a depth of 30 μm from an outermost surface being 120-320 MPa, and the crystallized glass comprising, as a main crystal phase, one or more types of crystal phases selected from α-cristobalite and an α-cristobalite solid solution, wherein in mass % calculated in terms of oxides, the content of an SiO2 component is 50.0-75.0%, the content of an Li2O component is 3.0-10.0%, the content of an Al2O3 component is from 5.0% to less than 15.0%, the content of a B2O3 component is from greater than 0% to 10.0% or less, the content of a P2O5 component is from greater than 0% to 10.0% or less, and a mass ratio of SiO2/(B2O3+Li2O) is 3.0-10.0.
-
公开(公告)号：US20250122116A1
公开(公告)日：2025-04-17
申请号：US18834614
申请日：2023-01-31
Applicant: OHARA INC.
Inventor： NOZOMU ODA , SAYA KIKKAWA , KOHEI OGASAWARA
IPC: C03C10/00
Abstract: A crystallized inorganic composition article, comprising: an inorganic composition article having a transmittance of 50% or more at 550 nm when heated to [At+50]° C., where At (° C.) is a yield point, wherein in a raw glass, by mass % in terms of oxide, a content of a SiO2 component is 65.0% to 85.0%, a content of an Al2O3 component is 3.0% to 15.0%, a content of a P2O5 component is more than 0% to 5.0%, a content of a Li2O component is more than 5.0% to 15.0%, a content of a ZrO2 component is 0% to 10.0%, a content of a MgO component is 0% to 5.0%, [the content of the Al2O3 component/(a content of a K2O component+the content of the MgO component)] is more than 0 to 20.0, and [the content of the Li2O component/the content of the MgO component] is 8.0 or more.
-
公开(公告)号：US20240351936A1
公开(公告)日：2024-10-24
申请号：US18686875
申请日：2022-07-12
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA , KEISUKE SHIMAMURA
Abstract: Provided is a chemically strengthened optical glass having an improved impact resistance and a high hardness while maintaining the refractive index, the Abbe number and the transmittance required in the conventional optical glasses. The chemically strengthened optical glass has a compressive stress layer on the surface thereof, contains, in mass % in terms of oxide, 20.0-50.0% of an SiO2 component, 10.0-45.0% of a TiO2 component and 0.1-20.0% of an Na2O component, has a refractive index (nd) of 1.65-1.85, and is characterized by having an impact resistance of 8 cm or more in a sandpaper falling ball test in which a 16.0 g SUS ball is dropped thereon.
-
公开(公告)号：US20230312402A1
公开(公告)日：2023-10-05
申请号：US18024490
申请日：2021-08-23
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA , KOHEI OGASAWARA , TOSHITAKA YAGI
CPC classification number: C03C10/0027 , C03C10/0054 , C03C21/002 , C03C2204/00
Abstract: Provided are crystallized glass that is easy to process and in which a high compressive stress value can be obtained on a surface, and reinforced crystallized glass thereof. A crystallized glass containing at least one type selected from α-cristobalite and an α-cristobalite solid solution as a main crystal phase, in which, by mass % in terms of oxide, a content of a SiO2 component is 50.0% to 75.0%, a content of a Li2O component is 3.0% to 10.0%, a content of an Al2O3 component is 5.0% or more and less than 15.0%, and a content of a B2O3 component is more than 0% and 10.0% or less.
-
公开(公告)号：US20230312401A1
公开(公告)日：2023-10-05
申请号：US18024489
申请日：2021-08-23
Applicant: OHARA INC.
Inventor： SAYA KIKKAWA , KOHEI OGASAWARA , TOSHITAKA YAGI
IPC: C03C10/00
CPC classification number: C03C10/0027 , C03C10/0054 , C03C2204/00
Abstract: Provided is reinforced crystallized glass that has a high strength and is less likely to break. The reinforced crystallized glass includes a compressive stress layer on a surface, and [CS50 μm*(DOLzero−50)]/2 is 2000 or more, where CS50 μm (MPa) is a compressive stress at a depth of 50 μm from an outermost surface, and DOLzero (μm) is a stress depth when the compressive stress is 0 MPa.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.016 seconds)
