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1.发明公开公开(公告)号：US20240255783A1
公开(公告)日：2024-08-01
申请号：US18390112
申请日：2023-12-20
发明人： Kosuke OKAHASHI , Yu KATAOKA
CPC分类号： G02F1/035 , G02F1/0327
摘要： An optical waveguide device includes an optical waveguide formed on a substrate, in which an optical modulator section that modulates a light wave propagating through the optical waveguide is formed in a part of the optical waveguide, in which a first dielectric layer covers the optical waveguide, and a second dielectric layer formed of a different material from the first dielectric layer is disposed on the first dielectric layer in a part of the optical waveguide excluding the optical modulator section.
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公开(公告)号：US12044911B2
公开(公告)日：2024-07-23
申请号：US17599717
申请日：2019-09-26
发明人： Masayuki Motoya , Norikazu Miyazaki
IPC分类号： G02F1/035
CPC分类号： G02F1/0356
摘要： In an optical modulation element using a thinly processed substrate, cracking of the substrate during electrical connection is prevented, and poor connection or a reduction in manufacturing yield is prevented. An optical waveguide element includes an optical substrate on which an optical waveguide and a conductor pattern are formed, and a support substrate that supports the optical substrate, in which the conductor pattern includes at least one electrical connection area defined as a range in which electrical connection is performed, the optical substrate has a substrate removal portion in which a material of the optical substrate has been removed to penetrate through the optical substrate at a portion corresponding to the electrical connection area, and at least a part of the electrical connection area is formed on the support substrate via the substrate removal portion.
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3.发明公开公开(公告)号：US20240168225A1
公开(公告)日：2024-05-23
申请号：US18284270
申请日：2022-03-30
发明人： Toshio KATAOKA , Norikazu MIYAZAKI
CPC分类号： G02B6/122 , G02B2006/12097 , G02B2006/12142
摘要： A method of roughening the upper surface of the slab waveguide includes a method of locally forming roughness using an electron beam and a method of roughening the upper surface via etching. As an etching condition for the rough surface, processing is performed under a condition in which roughness is generated compared to a processing condition for the rib top portion. Particularly, since the surface can be simply locally roughened by etching, the rough surface can be formed much more simply than that of the unnecessary light beam removing unit in Patent Literature No. 1. Roughness of the rough surface is preferably 10 nm or larger in arithmetic average roughness Ra. Roughness of an upper surface of the rib type optical waveguide is normally set to 1 nm or less
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公开(公告)号：US20240160051A1
公开(公告)日：2024-05-16
申请号：US18280906
申请日：2021-09-30
发明人： Toshio KATAOKA , Norikazu MIYAZAKI
IPC分类号： G02F1/01
CPC分类号： G02F1/0121
摘要： The purpose of the present invention is to provide an optical modulator in which propagation loss related to transmission of a high-frequency signal is reduced. An optical modulator, in which an electro-optical conversion element E/OC and a driver circuit DRV for driving the electro-optical conversion element are housed in the same case CA, includes: a multiplexer MUX that converts an input modulation signal, which is input from an outside of the case, into an output modulation signal having a higher frequency than the input modulation signal, and supplies the output modulation signal to the driver circuit, in which the multiplexer is housed in the case CA.
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公开(公告)号：US20240139085A1
公开(公告)日：2024-05-02
申请号：US18278176
申请日：2022-02-21
发明人： Syunsuke SUMA
CPC分类号： A61K8/27 , A61Q17/04 , A61K2800/612 , A61K2800/651 , A61K2800/81
摘要： Surface-modified zinc oxide particles of the disclosure are surface-modified zinc oxide particles in which the particle surfaces of zinc oxide particles are treated with a hydrolyzable surface treatment agent, in which the color difference ΔE before and after irradiation with simulated sunlight is 4.0 or lower.
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公开(公告)号：US20230314737A1
公开(公告)日：2023-10-05
申请号：US18126904
申请日：2023-03-27
发明人： Kei KATO , Hideki ICHIMEI
IPC分类号： G02B6/42
CPC分类号： G02B6/4256
摘要： An optical device includes a housing that accommodates at least an optical waveguide element, a main body portion 1 of the housing having an opening portion OP on one surface and a lead pin PN1 fixed to a side surface adjacent to the one surface, and including a metal member 2 disposed to surround the opening portion OP and a lid member 11 that closes the opening portion OP and is joined to the metal member 2, in which end portions of the metal member 2 and the lid member 11 along the side surface of the main body portion 1 at which the lead pin PN1 is disposed are located on an inner side of the main body portion 1 than the side surface of the main body portion 1.
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公开(公告)号：US20230263708A1
公开(公告)日：2023-08-24
申请号：US17997352
申请日：2020-04-30
发明人： Syunsuke SUMA , Masahiro NOBE
CPC分类号： A61K8/0245 , A61Q17/04 , A61K2800/412 , A61K2800/612 , A61K2800/651
摘要： Surface-modified zinc oxide particles having a silane coupling agent having an alkoxy group on surfaces thereof, in which the surface-modified zinc oxide particles have 5.0 × 10-2 g2/s or more and 1.0 × 102 g2/s or less of a penetration rate coefficient A of cyclopentasiloxane with respect to the surface-modified zinc oxide particles, which is indicated by A in the following formula (1). W2 = A·t (1) (in the formula, W is a penetration weight (unit: g), and t is a time (unit: s).)
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公开(公告)号：US11692080B2
公开(公告)日：2023-07-04
申请号：US16626329
申请日：2018-08-01
发明人： Kenji Harada , Takeshi Otsuka
摘要： Provided is a dispersion liquid for sealing a light-emitting element containing metal oxide particles having a refractive index of 1.7 or higher and a surface-modifying material at least partially attached to the metal oxide particles, in which a particle diameter D50 of the metal oxide particles when a cumulative percentage of a scattering intensity distribution obtained by a dynamic light scattering method is 50% is 30 nm or more and 100 nm or less, and a content of the surface-modifying material not attached to the metal oxide particles is 60% by mass or less with respect to a total content of the metal oxide particles and the surface-modifying material.
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9.发明公开公开(公告)号：US20230152539A1
公开(公告)日：2023-05-18
申请号：US17916505
申请日：2020-12-18
发明人： Yuki KUGIMOTO , Norikazu MIYAZAKI , Yu KATAOKA
IPC分类号： G02B6/42
CPC分类号： G02B6/4257 , G02B6/4239
摘要： To provide an optical waveguide device in which damage to a thin plate, particularly damage to an optical waveguide, is prevented. An optical waveguide device includes: a thin plate 1 that has an electro-optic effect and that has a thickness of equal to or thinner than 10 μm, an optical waveguide 2 being formed on the thin plate; and a reinforcing substrate that supports the thin plate, in which the thin plate 1 has a rectangular shape in a plan view, a dissimilar element layer 3, in which an element different from an element constituting the thin plate is disposed in the thin plate, is formed on at least a portion between an outer periphery of the thin plate and the optical waveguide 2, and a total length over which a cleavage plane of the thin plate traverses a region where the dissimilar element layer is formed, is equal to or longer than 5% of a width of the thin plate in a short side direction.
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公开(公告)号：US11644734B2
公开(公告)日：2023-05-09
申请号：US17276614
申请日：2019-07-03
发明人： Norikazu Miyazaki , Toru Sugamata
CPC分类号： G02F1/225 , G02F1/212 , G02F2202/20
摘要： An optical modulator includes an optical modulation element including an optical waveguide formed on a substrate and a housing that accommodates the optical modulation element, the housing has a bottom surface wall having a quadrilateral shape in a plan view, first and second long side walls that are connected to two opposite edges of the bottom surface wall, and first and second short side walls that are shorter than the first and second long side walls and are connected to two other opposite edges of the bottom surface wall. An average wall thickness of the second long side wall is equal to or larger than an average wall thickness of the first long side wall. At least one of the first and second short side walls has an average thickness that is thinner than the average thickness of the first long side wall.
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