Patents by Inventor Chigusa FUJIWARA

Chigusa FUJIWARA 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).

  • Publication number: 20230343905
    Abstract: 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: Application
    Filed: May 11, 2021
    Publication date: October 26, 2023
    Inventors: Shozo OSHIO, Mitsuru NITTA, Ryosuke SHIGITANI, Chigusa FUJIWARA, Shunpei FUJII
  • Publication number: 20230241409
    Abstract: 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: Application
    Filed: June 10, 2021
    Publication date: August 3, 2023
    Inventors: Mitsuru NITTA, Shozo OSHIO, Chigusa FUJIWARA, Ryosuke SHIGITANI
  • Publication number: 20230238768
    Abstract: Provided is a light emitting device including a light source that emits primary light; and a wavelength converter that includes a first phosphor that absorbs the primary light and emits first wavelength-converted light, wherein the light emitting device emits output light including the first wavelength-converted light, the first wavelength-converted light is near-infrared light having a fluorescence intensity maximum value within a wavelength range of 700 nm or more and less than 800 nm, the first wavelength-converted light mainly contains a broad fluorescent component based on an electron energy transition of 4T2?4A2 of Cr3+, and the broad fluorescent component has a fluorescence spectrum half-width that is less than 100 nm.
    Type: Application
    Filed: June 9, 2021
    Publication date: July 27, 2023
    Inventors: Mitsuru NITTA, Chigusa FUJIWARA, Shozo OSHIO
  • Patent number: 11692687
    Abstract: Provided is a wavelength converting composite member including: a disk-shaped substrate; a first wavelength converting member provided on the substrate and containing a first phosphor that radiates fluorescence due to a parity-forbidden transition; and a second wavelength converting member provided on the substrate and containing a second phosphor that radiates fluorescence due to a parity-allowed transition. The first wavelength converting member and the second wavelength converting member are disposed adjacent to each other along the circumferential direction of the substrate. The first wavelength converting member and the second wavelength converting member are provided on the substrate in such a way that the position of the center of gravity of the entirety of the first wavelength converting member and the second wavelength converting member is located on the rotation axis of the substrate. A light emitting device is provided with the wavelength converting composite member.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: July 4, 2023
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Mitsuru Nitta, Shozo Oshio, Chigusa Fujiwara
  • Publication number: 20230160558
    Abstract: Provided is a wavelength converting composite member including: a disk-shaped substrate; a first wavelength converting member provided on the substrate and containing a first phosphor that radiates fluorescence due to a parity-forbidden transition; and a second wavelength converting member provided on the substrate and containing a second phosphor that radiates fluorescence due to a parity-allowed transition. The first wavelength converting member and the second wavelength converting member are disposed adjacent to each other along the circumferential direction of the substrate. The first wavelength converting member and the second wavelength converting member are provided on the substrate in such a way that the position of the center of gravity of the entirety of the first wavelength converting member and the second wavelength converting member is located on the rotation axis of the substrate. A light emitting device is provided with the wavelength converting composite member.
    Type: Application
    Filed: April 19, 2021
    Publication date: May 25, 2023
    Inventors: Mitsuru NITTA, Shozo OSHIO, Chigusa FUJIWARA