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公开(公告)号：US20220099867A1
公开(公告)日：2022-03-31
申请号：US17426160
申请日：2020-01-17
Inventor： Ryosuke SHIGITANI , Shumpei FUJII
Abstract: A lighting device which outputs output light includes: a light source; and an optical member which includes at least one of reflection wavelength selectivity or transmission wavelength selectivity depending on an incidence angle θ of incident light from the light source, wherein the incident light is incident on the optical member at a plurality of different incidence angles θ, the incident light is converted into outgoing light through the optical member, the outgoing light includes reflected light reflected by the optical member and transmitted light transmitted through the optical member, the output light is light based on the outgoing light, and chromaticity of the output light continuously changes on a surface irradiated by the output light.
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2.发明申请公开(公告)号：US20210246330A1
公开(公告)日：2021-08-12
申请号：US16973935
申请日：2019-06-11
Inventor： Ryosuke SHIGITANI , Shunpei FUJII
IPC: C09D135/02 , C08F122/10 , C08K3/36 , C09D4/00 , C09D5/33 , C09D7/40 , B05D7/24
Abstract: A colloidal structure includes a plurality of types of colloidal particles, and a matrix that fixes the colloidal particles. The plurality of types of the colloidal particles include at least first colloidal particles and second colloidal particles, which are different in average particle size from each other. Then, the plurality of types of the colloidal particles form a regular array in a matrix. A multi-colloidal structure includes a plurality of the colloidal structures. A method for producing a colloidal structure includes: a dispersion liquid preparation step of preparing a colloidal dispersion liquid by dispersing a plurality of types of colloidal particles together with a monomer; a coating film generation step of coating the colloidal dispersion liquid on a substrate, and generating a coating film; and a polymerization step of polymerizing the monomer in the coating film.
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公开(公告)号：US20240304764A1
公开(公告)日：2024-09-12
申请号：US18276022
申请日：2022-02-10
Inventor： Shozo OSHIO , Mitsuru NITTA , Ryosuke SHIGITANI
CPC classification number: H01L33/504 , C09K11/77348 , C09K11/7774 , C09K11/7776
Abstract: Disclosed is a light-emitting device provided with a solid-state light-emitting element and a phosphor and emits output light. The spectral distribution of the output light has a first light component and a second light component derived from fluorescence emitted by the phosphor, and has a first minimum value between the first light component and the second light component. The first light component is a fluorescent component having a maximum intensity value within a wavelength range of 560 nm or more and less than 700 nm. The second light component is a fluorescent component having a maximum intensity value within a wavelength range of 700 nm or more and less than 2500 nm. The maximum intensity value of the second light component is greater than that of the first light component. The first minimum value is less than 50% of the maximum intensity value of the second light component.
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公开(公告)号：US20240128413A1
公开(公告)日：2024-04-18
申请号：US18275863
申请日：2022-02-01
Inventor： Mitsuru NITTA , Ryosuke SHIGITANI , Emi MIYAZAKI , Toru HIRANO
IPC: H01L33/50
CPC classification number: H01L33/504 , H01L33/507
Abstract: Provided is a wavelength converter including a phosphor ceramic containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ceramic has a concave and convex structure including a plurality of convex parts and a plurality of concave parts. The phosphor part is arranged inside the plurality of concave parts in the phosphor ceramic. Also provided is a light emitting device including the wavelength converter, and a solid-state light source that emits light with which the wavelength converter is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.
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5.发明公开公开(公告)号：US20240079532A1
公开(公告)日：2024-03-07
申请号：US18272647
申请日：2021-12-24
Inventor： Mitsuru NITTA , Ryosuke SHIGITANI , Shozo OSHIO
CPC classification number: H01L33/502 , C09K11/684 , H01L33/507
Abstract: Provided is a phosphor that contains Cr3+ and emits near-infrared light, wherein a host crystal of the phosphor has a crystal structure same as that of a compound Mg3Ga2GeO8, a fluorescence spectrum FF1 has a fluorescence peak FPF1 within a range of wavelengths of 700 or more and less than 900 nm, and a fluorescence spectrum data group FD that is an aggregate of spectral intensities of the fluorescence spectrum FF1 at every 10 nm exhibits a unimodal shape within the range of wavelengths of 700 or more and less than 900 nm.
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Patent Agency Ranking
公开(公告)号：US20240347677A1
公开(公告)日：2024-10-17
申请号：US18292043
申请日：2022-06-27
Inventor： Ryosuke SHIGITANI , Mitsuru NITTA , Shozo OSHIO
IPC: H01L33/50
CPC classification number: H01L33/502 , H01L33/507
Abstract: Provided is a light emitting device including a solid-state light-emitting element that emits primary light, a wavelength converter that includes a phosphor containing a fluorescent ion which absorbs the primary light on the basis of a forbidden transition-type electronic energy transition, and an optical member that reflects the primary light while transmitting fluorescence emitted by the fluorescent ion. The solid-state light-emitting element is arranged on a side of one surface of the wavelength converter and the optical member is arranged on a side of the other surface. The fluorescence emitted by the fluorescent ion passes through the optical member and is output to the outside of the light emitting device. An electronic apparatus includes the above-described light emitting device.
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公开(公告)号：US20240304765A1
公开(公告)日：2024-09-12
申请号：US18276025
申请日：2022-02-14
Inventor： Ryosuke SHIGITANI , Mitsuru NITTA , Shozo OSHIO
IPC: H01L33/50
CPC classification number: H01L33/504 , H01L33/507
Abstract: Provided is a light emitting device that is characterized by at least combining a solid-state light emitting element, a first wavelength converter, and a second wavelength converter, and emits output light. The solid-state light emitting element emits primary light. The first wavelength converter absorbs at least part of the primary light and converts this part of the primary light to first wavelength-converted light. The second wavelength converter absorbs at least part of first mixed light including first transmitted primary light, which is the primary light that has passed through the first wavelength converter, and the first wavelength-converted light, and converts the light to second wavelength-converted light. The output light includes at least transmitted first wavelength-converted light, which is a light component obtained by the first wavelength-converted light having passed through the second wavelength converter, and a light component of the second wavelength-converted light.
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公开(公告)号：US20240118220A1
公开(公告)日：2024-04-11
申请号：US18275945
申请日：2022-02-01
Inventor： Shozo OSHIO , Mitsuru NITTA , Ryosuke SHIGITANI
IPC: G01N21/94 , G01N21/359 , G01N21/64 , G01N21/88 , G01N33/02
CPC classification number: G01N21/94 , G01N21/359 , G01N21/64 , G01N21/8806 , G01N33/02 , G01N2021/3181
Abstract: Provided is an inspection device including: a light source including a phosphor; and a photodetector, and detecting, using the photodetector, reflected light of the inspection light reflected by the inspection object. A spectral distribution of the inspection light has at least one maximum value derived from fluorescence emitted by the phosphor, and the maximum value is within a wavelength range of 600 nm or more and 750 nm or less. When Pmax is set as a spectral intensity at the maximum value where the spectral intensity is largest at the at least one maximum value, a largest value of the spectral intensity in a wavelength range longer than 750 nm is 20% or more of Pmax and less than Pmax, and the spectral intensity within a wavelength range of 500 nm or more and 550 nm or less is less than 20% of Pmax.
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公开(公告)号：US20250113692A1
公开(公告)日：2025-04-03
申请号：US18730235
申请日：2023-01-23
Inventor： Takeshi ABE , Shogo MOTEGI , Mitsuru NITTA , Ryosuke SHIGITANI
IPC: H10H29/851 , H10F55/25 , H10H29/14 , H10H29/85
Abstract: A light-emitting device that emits output light, is a light-emitting device that includes: a light-emitting element that emits a primary light; and a wavelength converter that converts at least a portion of the primary light into a secondary light. The output light includes at least a portion of the secondary light. The output light has a light intensity greater than or equal to a predetermined value throughout an entire wavelength range of from 750 nm to 900 nm, inclusive. A ratio of a light intensity of the output light at 900 nm to a light intensity of the output light at 750 nm is greater than or equal to 0.2 and less than 3.0. The output light has a spectral luminosity of at least 0.1 lm/W and at most 10 lm/W.
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10.发明公开公开(公告)号：US20240279546A1
公开(公告)日：2024-08-22
申请号：US18571218
申请日：2022-06-01
Inventor： Mitsuru NITTA , Ryosuke SHIGITANI , Shozo OSHIO
IPC: C09K11/77 , C01B33/24 , F21V9/30 , F21V9/38 , F21Y113/00 , F21Y115/10
CPC classification number: C09K11/7708 , C01B33/24 , C09K11/7776 , F21V9/30 , F21V9/38 , C01P2002/52 , C01P2002/72 , C01P2006/60 , F21Y2113/30 , F21Y2115/10
Abstract: Provided is a phosphor represented by general formula (1) below,
(Gd1-x-y,Lny,MIIx)3MIII2(Ga1-z,MIVz)3O12:Cr3+ (1)
where, in the formula, Ln is one or more elements selected from La, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Yb, and Lu, MII is a divalent element, MIII is a trivalent element, MIV is a tetravalent element, and x, y, and z satisfy 0
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