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公开(公告)号：US20240329309A1
公开(公告)日：2024-10-03
申请号：US18616299
申请日：2024-03-26
Applicant: AGC Inc.
Inventor： Seiki OHARA
Abstract: The present invention relates to an optical waveguide including two or more cores and a cladding portion, in which each of the cores is a continuous portion without branching from a start end to a terminal end in a propagation direction of light, at least one of the cores includes a linear region and a curved region, and has an axis deviation at least at one of a joint between the linear region and the curved region and an inflection point of the curved region, and the axis deviation occurs in a direction perpendicular to the propagation direction of light in a plan view.
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公开(公告)号：US20190107674A1
公开(公告)日：2019-04-11
申请号：US16203983
申请日：2018-11-29
Applicant: AGC INC.
Inventor： Seiki OHARA , Kenta KOBAYASHI , Shotaro TAKENOBU
IPC: G02B6/122
Abstract: Provided is a resin optical waveguide containing a core, under cladding and over cladding, in which the resin optical waveguide has portions having a core width varying along a light propagation direction, the maximum core width is 4 to 10 μm, and the minimum core width of 1 μm or more and less than 4 μm, when the length of a portion S at which the core width is 1 μm or more and less than 4μm is LS and the length of a portion at which the core width is 4 to 10 μm is LL, the proportion of LS to the total length is 0.1 to 40%, and the portion S contains neither a certain bubble defect nor a certain defect inside the core and in a vicinity of a core-cladding interface.
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公开(公告)号：US20220411318A1
公开(公告)日：2022-12-29
申请号：US17896048
申请日：2022-08-25
Applicant: AGC Inc.
Inventor： Seiki OHARA , Qing LI , Shusaku AKIBA
Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of β-spodumene crystals, petalite crystals, and eucryptite crystals.
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公开(公告)号：US20210053867A1
公开(公告)日：2021-02-25
申请号：US17024109
申请日：2020-09-17
Applicant: AGC Inc.
Inventor： Suguru MURAYAMA , Seiki OHARA , Qing LI , Shusaku AKIBA
Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
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公开(公告)号：US20220073425A1
公开(公告)日：2022-03-10
申请号：US17469139
申请日：2021-09-08
Applicant: AGC Inc.
Inventor： Seiki OHARA , Shunji WACHI , Hironobu SATO
Abstract: The present invention relates to a chemically strengthened glass with a film, including: a chemically strengthened glass having a pair of main surfaces opposing each other; and a film formed on at least one of the main surfaces of the chemically strengthened glass, in which the chemically strengthened glass has two or less interference fringes observed under stress measurement utilizing surface propagation light having a wavelength of 365 nm, and the film has a refractive index lower than a refractive index of the chemically strengthened glass.
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Patent Agency Ranking
公开(公告)号：US20220073415A1
公开(公告)日：2022-03-10
申请号：US17521910
申请日：2021-11-09
Applicant: AGC Inc.
Inventor： Seiki OHARA , Qing LI , Shusaku AKIBA
Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of β-spodumene crystals, petalite crystals, and eucryptite crystals.
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公开(公告)号：US20220057574A1
公开(公告)日：2022-02-24
申请号：US17453906
申请日：2021-11-08
Applicant: AGC Inc.
Inventor： Naoya WADA , Shotaro TAKENOBU , Kenta KOBAYASHI , Seiki OHARA
Abstract: The present invention provides a polymer optical waveguide having a core, an under cladding and an over cladding, in which: the polymer optical waveguide has a first section on one end side in the light propagation direction where no portion of the over cladding exists and the core and the under cladding are exposed, and a second section on the other end side in the light propagation direction where the core is covered with the under cladding and the over cladding; and a relative refractive index difference among the core, the under cladding and the over cladding, a core width and core height in an end surface at the one end side of the first section, and a core width and core height in an end surface at the other end side of the second section satisfy predetermined relationships.
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公开(公告)号：US20210003780A1
公开(公告)日：2021-01-07
申请号：US17026497
申请日：2020-09-21
Applicant: AGC Inc.
Inventor： Seiki OHARA , Shotaro TAKENOBU , Naoya WADA
IPC: G02B6/26
Abstract: The present invention relates to a polymer optical waveguide including: a core; an under-cladding; and an over-cladding, in which the polymer optical waveguide includes a coupling section and an optical waveguide section that are provided along a light propagation direction, the polymer optical waveguide includes portions having different core widths along the light propagation direction, and when a core width at a portion a having a narrowest core width is denoted Wa (μm) and a core height at the portion a is denoted Ha (μm), Ha is 1.3 μm or more and 4.5 μm or less, and Ha/Wa is 1.15 or less.
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公开(公告)号：US20200183081A1
公开(公告)日：2020-06-11
申请号：US16787158
申请日：2020-02-11
Applicant: AGC Inc.
Inventor： Shotaro TAKENOBU , Toshihisa OKADA , Satoko NOMA , Kenta KOBAYASHI , Keisuke HANASHIMA , Seiki OHARA
Abstract: The present invention provides a polymer optical waveguide containing: a core; and a cladding having a refractive index lower than that of the core, provided around the core, in which the polymer optical waveguide has a core-coupling section where at least a part of the cladding is not present along a light propagation direction of the polymer optical waveguide and an application type removal film A provided so as to come into contact with the core of the core-coupling section.
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公开(公告)号：US20240092678A1
公开(公告)日：2024-03-21
申请号：US18520792
申请日：2023-11-28
Applicant: AGC Inc.
Inventor： Qing LI , Seiki OHARA
CPC classification number: C03B32/02 , C03B11/125
Abstract: The present invention relates to a method for producing crystallized glass, including: (a1) melting a glass raw material to obtain molten glass; (a2) molding the molten glass into a predetermined shape by a molding unit to obtain a glass molded body; (a3) slowly cooling the glass molded body to obtain a raw glass plate containing at least one of a crystal nucleus and a separated phase; and (a4) heat-treating the raw glass plate containing the at least one of the crystal nucleus and the separated phase to cause crystal growth so as to obtain the crystallized glass.
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