Patents by Inventor Mika AMIYA
Mika AMIYA 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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Patent number: 11757070Abstract: Provided is a light emitting device, including a first light emitting element having a light emission peak wavelength within a range of 400 nm or more and 490 nm or less, a second light emitting element having a different light emission peak wavelength from the first light emitting element within a range of 400 nm or more and 490 nm or less, a first fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength within a range of 500 nm or more and 540 nm or less, and a second fluorescent material, wherein the first fluorescent material is a Ce-activated aluminate fluorescent material containing Lu, Al, and Ga, and optionally at least one element selected from rare earth elements other than Lu.Type: GrantFiled: December 31, 2020Date of Patent: September 12, 2023Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Shoji Hosokawa
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Patent number: 11056620Abstract: A light emitting device includes a light emitting element having an emission peak wavelength in a range of 380 nm or more and 490 nm or less, and a red fluorescent material which is excited by the light from the light emitting element to emit light having at least one light emission peak wavelength in a range of 580 nm or more and 680 nm or less, wherein a ratio of the photon flux R of red light in a range of 620 nm or more and 700 nm or less to the photon flux B of blue light in a range of 400 nm or more and 490 nm or less, R/B, is in a range of more than 20 and 200 or less.Type: GrantFiled: May 21, 2020Date of Patent: July 6, 2021Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Sadakazu Wakui
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Publication number: 20210126169Abstract: Provided is a light emitting device capable of realizing an excellent color rendering property.Type: ApplicationFiled: December 31, 2020Publication date: April 29, 2021Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Shoji HOSOKAWA
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Patent number: 10978620Abstract: Provided are a light emitting device and an illumination device.Type: GrantFiled: November 28, 2018Date of Patent: April 13, 2021Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Tomokazu Suzuki
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Patent number: 10952382Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.Type: GrantFiled: September 16, 2019Date of Patent: March 23, 2021Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Tomokazu Suzuki
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Patent number: 10910526Abstract: Provided is a light emitting device including a first light emitting element having a light emission peak wavelength of 400 nm or more and 490 nm or less, a second light emitting element having a different light emission peak wavelength from the first light emitting element of 400 nm or more and 490 nm or less, a first fluorescent material that is a Ce-activated aluminate fluorescent material and excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength of 500 nm or more and 540 nm or less, and a second fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength of 600 nm or more and 680 nm or less.Type: GrantFiled: December 20, 2018Date of Patent: February 2, 2021Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Shoji Hosokawa
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Publication number: 20200287098Abstract: A light emitting device includes a light emitting element having an emission peak wavelength in a range of 380 nm or more and 490 nm or less, and a red fluorescent material which is excited by the light from the light emitting element to emit light having at least one light emission peak wavelength in a range of 580 nm or more and 680 nm or less, wherein a ratio of the photon flux R of red light in a range of 620 nm or more and 700 nm or less to the photon flux B of blue light in a range of 400 nm or more and 490 nm or less, R/B, is in a range of more than 20 and 200 or less.Type: ApplicationFiled: May 21, 2020Publication date: September 10, 2020Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Kazushige FUJIO, Sadakazu WAKUI
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Patent number: 10700243Abstract: A light emitting device includes a light emitting element having an emission peak wavelength in a range of 380 nm or more and 490 nm or less, and a red fluorescent material which is excited by the light from the light emitting element to emit light having at least one light emission peak wavelength in a range of 580 nm or more and 680 nm or less, wherein a ratio of the photon flux R of red light in a range of 620 nm or more and 700 nm or less to the photon flux B of blue light in a range of 400 nm or more and 490 nm or less, R/B, is in a range of more than 20 and 200 or less.Type: GrantFiled: March 13, 2019Date of Patent: June 30, 2020Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Sadakazu Wakui
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Publication number: 20200008363Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.Type: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Kazushige FUJIO, Tomokazu SUZUKI
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Patent number: 10455773Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.Type: GrantFiled: June 27, 2017Date of Patent: October 29, 2019Assignee: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Tomokazu Suzuki
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Publication number: 20190288165Abstract: A light emitting device includes a light emitting element having an emission peak wavelength in a range of 380 nm or more and 490 nm or less, and a red fluorescent material which is excited by the light from the light emitting element to emit light having at least one light emission peak wavelength in a range of 580 nm or more and 680 nm or less, wherein a ratio of the photon flux R of red light in a range of 620 nm or more and 700 nm or less to the photon flux B of blue light in a range of 400 nm or more and 490 nm or less, R/B, is in a range of more than 20 and 200 or less.Type: ApplicationFiled: March 13, 2019Publication date: September 19, 2019Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Kazushige FUJIO, Sadakazu WAKUI
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Publication number: 20190198724Abstract: Provided is a light emitting device capable of realizing an excellent color rendering property.Type: ApplicationFiled: December 20, 2018Publication date: June 27, 2019Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Shoji HOSOKAWA
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Publication number: 20190165221Abstract: Provided are a light emitting device and an illumination device.Type: ApplicationFiled: November 28, 2018Publication date: May 30, 2019Applicant: NICHIA CORPORATIONInventors: Mika Amiya, Kazushige Fujio, Tomokazu Suzuki
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Publication number: 20180000016Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.Type: ApplicationFiled: June 27, 2017Publication date: January 4, 2018Applicant: NICHIA CORPORATIONInventors: Mika AMIYA, Kazushige FUJIO, Tomokazu SUZUKI