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公开(公告)号:US11767252B2
公开(公告)日:2023-09-26
申请号:US17024109
申请日:2020-09-17
Applicant: AGC Inc.
Inventor: Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
CPC classification number: C03C3/085 , C03C3/083 , C03C3/087 , C03C3/091 , C03C3/093 , C03C3/097 , C03C4/18 , C03C21/00 , C03C21/002
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 Na2O, 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:US10768372B2
公开(公告)日:2020-09-08
申请号:US16292375
申请日:2019-03-05
Applicant: AGC Inc.
Inventor: Seiki Ohara , Shotaro Takenobu
Abstract: The present invention relates to a resin optical waveguide including a core and a cladding having a refractive index lower than that of the core, in which the resin optical waveguide includes, along a light propagation direction, a coupling part at which at least a part of the core is exposed and an optical waveguide part where the whole circumference of the core is covered with the cladding, and the core has a width Wb at an end part of the coupling part at a side of the optical waveguide part being larger than a width Wa of the core at an end part of the coupling part at a side opposite to the optical waveguide part.
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公开(公告)号:US10393966B2
公开(公告)日:2019-08-27
申请号:US16131851
申请日:2018-09-14
Applicant: AGC INC.
Inventor: Toshihisa Okada , Seiki Ohara , Shotaro Takenobu , Satoko Noma
Abstract: The present invention relates to a composite optical waveguide (1) containing a polymer optical waveguide and a silicon optical waveguide adiabatically coupled to each other, in which the polymer optical waveguide and the silicon optical waveguide are coupled to each other by an adhesive layer in an adiabatic-coupling portion where a core of the polymer optical waveguide and a core of the silicon optical waveguide are disposed to face each other, the adhesive layer is formed by using a photocurable adhesive having a glass transition point Tg being 125° C. or higher after curing, and the adiabatic-coupling portion includes a region in which a spacing t between the core of the polymer optical waveguide and the silicon optical waveguide is 1.5 μm or less.
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公开(公告)号:US10384974B2
公开(公告)日:2019-08-20
申请号:US15908227
申请日:2018-02-28
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 Na2O, 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:US20190194057A1
公开(公告)日:2019-06-27
申请号:US16291407
申请日:2019-03-04
Applicant: AGC Inc.
Inventor: Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
CPC classification number: C03C3/085 , C03C3/083 , C03C3/087 , C03C3/091 , C03C3/093 , C03C3/097 , C03C4/18 , C03C21/00 , C03C21/002
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 Na2O, 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:US11099325B2
公开(公告)日:2021-08-24
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:US10473855B2
公开(公告)日:2019-11-12
申请号:US16203983
申请日:2018-11-29
Applicant: AGC INC.
Inventor: Seiki Ohara , Kenta Kobayashi , Shotaro Takenobu
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 4 μm 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:US11886006B2
公开(公告)日:2024-01-30
申请号:US17453906
申请日:2021-11-08
Applicant: AGC Inc.
Inventor: Naoya Wada , Shotaro Takenobu , Kenta Kobayashi , Seiki Ohara
CPC classification number: G02B6/1221 , G02B6/02038
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:US11505491B2
公开(公告)日:2022-11-22
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:US10222554B2
公开(公告)日:2019-03-05
申请号:US15884883
申请日:2018-01-31
Applicant: AGC Inc.
Inventor: Seiki Ohara , Shotaro Takenobu
Abstract: A resin optical waveguide containing a core, an under cladding and an over cladding having refractive indices lower than that of the core, in which the resin optical waveguide has, at one end side thereof, a core-exposed section at which the over cladding is not present and the core is exposed and, of the under cladding, a portion corresponding to the core-exposed section has a core-neighboring region that satisfies the following (1) and (2):(1) the core-neighboring region is a region whose distance from the core is within x, and x is 5 μm or more and 20 μm or less; and(2) the core-neighboring region has a refractive index distribution that the refractive index at a side of an interface with the core is high and the refractive index at a far side from the interface with the core is low.
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