Patents by Inventor Ryosuke SHIGITANI
Ryosuke SHIGITANI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240347677Abstract: 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.Type: ApplicationFiled: June 27, 2022Publication date: October 17, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke SHIGITANI, Mitsuru NITTA, Shozo OSHIO
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Publication number: 20240304765Abstract: 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.Type: ApplicationFiled: February 14, 2022Publication date: September 12, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke SHIGITANI, Mitsuru NITTA, Shozo OSHIO
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Publication number: 20240304764Abstract: 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.Type: ApplicationFiled: February 10, 2022Publication date: September 12, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shozo OSHIO, Mitsuru NITTA, Ryosuke SHIGITANI
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Patent number: 12072513Abstract: 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 ? of incident light from the light source, wherein the incident light is incident on the optical member at a plurality of different incidence angles ?, 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.Type: GrantFiled: January 17, 2020Date of Patent: August 27, 2024Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke Shigitani, Shumpei Fujii
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Publication number: 20240279546Abstract: 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<x<0.5, 0?y<0.5, and 0<z<0.5.Type: ApplicationFiled: June 1, 2022Publication date: August 22, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Mitsuru NITTA, Ryosuke SHIGITANI, Shozo OSHIO
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Patent number: 12018834Abstract: A light-emitting device includes: a light guide that includes (i) a light-transmissive member that is light-transmissive at least in a visible light region and (ii) a light control layer that is disposed on at least a part of a surface of the light-transmissive member; and a light source that emits light toward at least one end surface of the light-transmissive member. The light control layer has reflected-wavelength selectivity that makes a wavelength of reflected light dependent on an incident angle of incident light.Type: GrantFiled: February 22, 2021Date of Patent: June 25, 2024Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke Shigitani, Kazuyuki Yamae, Hironori Akiyama, Hideki Wada, Kotone Mori
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Publication number: 20240128413Abstract: 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.Type: ApplicationFiled: February 1, 2022Publication date: April 18, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Mitsuru NITTA, Ryosuke SHIGITANI, Emi MIYAZAKI, Toru HIRANO
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Publication number: 20240118220Abstract: 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.Type: ApplicationFiled: February 1, 2022Publication date: April 11, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shozo OSHIO, Mitsuru NITTA, Ryosuke SHIGITANI
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PHOSPHOR, LIGHT EMITTING DEVICE, SENSING SYSTEM LIGHT SOURCE, AND SENSING SYSTEM ILLUMINATION SYSTEM
Publication number: 20240079532Abstract: 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.Type: ApplicationFiled: December 24, 2021Publication date: March 7, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Mitsuru NITTA, Ryosuke SHIGITANI, Shozo OSHIO -
Patent number: 11892665Abstract: A colloidal crystal structure includes a colloidal crystal layer including a plurality of colloidal particles and a binder disposed between the plurality of colloidal particles to fix the colloidal particles, and a refractive index control material that is provided on one surface of the colloidal structural layer, is transparent, and has a refractive index difference of less than 10% with respect to the binder. A light-emitting device includes an optical filter including the colloidal crystal structure, and a light source, and a part of primary light emitted by the light source passes through the optical filter. A lighting system includes the light-emitting device.Type: GrantFiled: January 15, 2020Date of Patent: February 6, 2024Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke Shigitani, Shumpei Fujii
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Publication number: 20230343905Abstract: A light emitting device includes: a first light emitting element that emits a first light component; a second light emitting element that emits a second light component; a first phosphor that emits a third light component; and a second phosphor that emits a fourth light component. A spectral distribution of the output light has a trough portion within a wavelength range of 650 nm or more and 750 nm or less, and a minimum intensity value within the wavelength range is less than 30% of a maximum intensity value within a wavelength range of 380 nm or more and 2500 nm or less.Type: ApplicationFiled: May 11, 2021Publication date: October 26, 2023Inventors: Shozo OSHIO, Mitsuru NITTA, Ryosuke SHIGITANI, Chigusa FUJIWARA, Shunpei FUJII
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Publication number: 20230241409Abstract: Provided is a light irradiation type cosmetic apparatus including a light emitting device including: a light source that emits primary light; and a first phosphor that absorbs the primary light and converts the primary light into first wavelength-converted light having a wavelength longer than that of the primary light, wherein the light source is a solid-state light source having a rated output of 1 W or more, the primary light is light emitted from the solid-state light source, the first wavelength-converted light contains fluorescence based on an electron energy transition of Cr3+, and the first wavelength-converted light has a fluorescence spectrum having a fluorescence intensity maximum value in a wavelength range exceeding 710 nm.Type: ApplicationFiled: June 10, 2021Publication date: August 3, 2023Inventors: Mitsuru NITTA, Shozo OSHIO, Chigusa FUJIWARA, Ryosuke SHIGITANI
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Publication number: 20230080967Abstract: A light-emitting device includes: a light guide that includes (i) a light-transmissive member that is light-transmissive at least in a visible light region and (ii) a light control layer that is disposed on at least a part of a surface of the light-transmissive member; and a light source that emits light toward at least one end surface of the light-transmissive member. The light control layer has reflected-wavelength selectivity that makes a wavelength of reflected light dependent on an incident angle of incident light.Type: ApplicationFiled: February 22, 2021Publication date: March 16, 2023Inventors: Ryosuke SHIGITANI, Kazuyuki YAMAE, Hironori AKIYAMA, Hideki WADA, Kotone MORI
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Patent number: 11353642Abstract: An optical filter includes a colloidal crystal layer including: a plurality of particles including at least one of an inorganic material or a resin material; and a binder disposed between the plurality of particles. The optical filter reflects a part of light in the wavelength range of 300 nm or more and less than 800 nm. A multiplex optical filter includes multiple optical filters. A light emitting device includes the optical filter and a light source, and a part of primary light emitted from the light source is transmitted through the optical filter.Type: GrantFiled: May 15, 2019Date of Patent: June 7, 2022Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Ryosuke Shigitani, Shunpei Fujii
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Publication number: 20220120948Abstract: A colloidal crystal structure includes a colloidal crystal layer including a plurality of colloidal particles and a binder disposed between the plurality of colloidal particles to fix the colloidal particles, and a refractive index control material that is provided on one surface of the colloidal structural layer, is transparent, and has a refractive index difference of less than 10% with respect to the binder. A light-emitting device includes an optical filter including the colloidal crystal structure, and a light source, and a part of primary light emitted by the light source passes through the optical filter. A lighting system includes the light-emitting device.Type: ApplicationFiled: January 15, 2020Publication date: April 21, 2022Inventors: Ryosuke SHIGITANI, Shumpei FUJII
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Publication number: 20220099867Abstract: 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 ? of incident light from the light source, wherein the incident light is incident on the optical member at a plurality of different incidence angles ?, 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.Type: ApplicationFiled: January 17, 2020Publication date: March 31, 2022Inventors: Ryosuke SHIGITANI, Shumpei FUJII
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Publication number: 20210246330Abstract: 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.Type: ApplicationFiled: June 11, 2019Publication date: August 12, 2021Inventors: Ryosuke SHIGITANI, Shunpei FUJII
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Publication number: 20210199865Abstract: An optical filter includes a colloidal crystal layer including: a plurality of particles including at least one of an inorganic material or a resin material; and a binder disposed between the plurality of particles. The optical filter reflects a part of light in the wavelength range of 300 nm or more and less than 800 nm. A multiplex optical filter includes multiple optical filters. A light emitting device includes the optical filter and a light source, and a part of primary light emitted from the light source is transmitted through the optical filter.Type: ApplicationFiled: May 15, 2019Publication date: July 1, 2021Inventors: Ryosuke SHIGITANI, Shunpei FUJII
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Publication number: 20200400868Abstract: A color vision correction lens that corrects color vision of a user includes: a resin layer having a first surface facing an eye of the user and a convex surface which is an example of a second surface on an opposite side of the first surface; and a reflective layer on the convex surface side of the resin layer. The resin layer contains a color material which selectively absorbs light in a first wavelength band. The reflective layer selectively reflects light in a second wavelength band. The first wavelength band and the second wavelength band overlap at least partially.Type: ApplicationFiled: June 10, 2020Publication date: December 24, 2020Inventors: Hideki WADA, Kazuyuki YAMAE, Ryosuke SHIGITANI, Yasuhisa INADA