公开(公告)号：US11959632B2

公开(公告)日：2024-04-16

申请号：US17418278

申请日：2019-12-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Nitta ,  Shozo Oshio ,  Takeshi Abe

IPC: F21V9/30 ,  A61B5/00 ,  A61N5/06 ,  A61N5/067 ,  A61B1/04 ,  A61B1/06 ,  F21W131/20 ,  F21Y115/30

CPC classification number: F21V9/30 ,  A61B5/0071 ,  A61N5/062 ,  A61N5/067 ,  A61B1/043 ,  A61B1/0653 ,  F21W2131/20 ,  F21Y2115/30

Abstract: A light-emitting device includes: a light source that radiates primary light; and a first phosphor that absorbs the primary light and converts the primary light into first wavelength-converted light having a longer wavelength than the primary light, wherein the primary light is laser light, the first wavelength-converted light includes fluorescence based on electron energy transition of Cr3+, and a fluorescence spectrum of the first wavelength-converted light has a maximum fluorescence intensity value in region of a wavelength exceeding 710 nm.

公开(公告)号：US11692687B2

公开(公告)日：2023-07-04

申请号：US17919999

申请日：2021-04-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Nitta ,  Shozo Oshio ,  Chigusa Fujiwara

IPC: F21V9/38 ,  A61B90/30

CPC classification number: F21V9/38 ,  A61B2090/304

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.

公开(公告)号：US11407942B2

公开(公告)日：2022-08-09

申请号：US16621204

申请日：2018-05-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shozo Oshio ,  Takeshi Abe

IPC: C09K11/77 ,  F21V9/32 ,  F21V9/38 ,  C01B33/24 ,  G03B21/20 ,  H01L33/50 ,  G02B26/00

Abstract: Garnet silicate is garnet silicate containing, as a main component, silicate represented by a general formula: Lu2CaMg2(SiO4)3. The garnet silicate includes primary particles having a particle shape derived from a crystal structure of garnet. Moreover, the garnet silicate further contains alkaline metal including at least lithium, in which a content of the alkaline metal is less than 2000 ppm. The garnet silicate phosphor includes garnet silicate and ions which are included in the garnet silicate and function as a light emission center. The wavelength converter includes the garnet silicate phosphor. A light emitting device includes the garnet silicate phosphor or the wavelength converter.

公开(公告)号：US10364963B2

公开(公告)日：2019-07-30

申请号：US15534185

申请日：2015-11-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shozo Oshio ,  Shinji Shibamoto

IPC: G01N21/64 ,  F21V9/30 ,  F21K9/64 ,  C09K11/77 ,  H01S5/00 ,  F21Y115/30 ,  H01S5/323 ,  H01S5/40

Abstract: A light-emitting device 1 according to the present invention includes: a solid-state light-emitting element 10 that radiates laser light; and a wavelength converter 50 including plural types of phosphors which receive the laser light and radiate light. The phosphors included in the wavelength converter 50 are substantially composed of Ce3+-activated phosphors. The above-described light-emitting device includes at least a warm-color Ce3+-activated phosphor that receives the laser light and radiates light having a light emission peak within a wavelength range of 580 nm or more to less than 660 nm, and light-emitting components radiated by the phosphors are composed of only light-emitting components derived from Ce3+.

公开(公告)号：US09732271B2

公开(公告)日：2017-08-15

申请号：US14652313

申请日：2013-10-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shozo Oshio ,  Natsuki Sato

IPC: C01G25/00 ,  C01G27/00 ,  H01L33/50 ,  C09K11/08 ,  C09K11/80 ,  C09K11/83 ,  C09K11/77 ,  C01F17/00 ,  C01F7/00

CPC classification number: C09K11/7792 ,  C01F7/002 ,  C01F17/0025 ,  C01G25/006 ,  C01G27/006 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/84 ,  C09K11/7721 ,  C09K11/7734 ,  C09K11/7749 ,  C09K11/7774 ,  H01L33/502 ,  H01L33/504 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2924/00014 ,  H01L2924/00

Abstract: An inorganic oxide of the present invention has a composition represented by General formula (1): M2LnX2(AlO4)3 (where M includes Ca, Ln includes Tb, and X includes at least either one of Zr and Hf). Then, a number of Tb atoms in General formula (1) is 0.1 or more to 1 or less. Moreover, a crystal structure of the inorganic oxide is a garnet structure. A phosphor made of this inorganic oxide is capable of being excited by short-wavelength visible light, and can radiate narrow-band green light.

公开(公告)号：US12140305B2

公开(公告)日：2024-11-12

申请号：US18598177

申请日：2024-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Nitta ,  Shozo Oshio ,  Takeshi Abe

IPC: F21V9/30 ,  A61B5/00 ,  A61N5/06 ,  A61N5/067 ,  A61B1/04 ,  A61B1/06 ,  F21W131/20 ,  F21Y115/30

Abstract: A light-emitting device includes: a light source that radiates primary light; and a first phosphor that absorbs the primary light and converts the primary light into first wavelength-converted light having a longer wavelength than the primary light, the first wavelength-converted light includes fluorescence based on electron energy transition of Cr3+, and a fluorescence spectrum of the first wavelength-converted light has a maximum fluorescence intensity value in region of a wavelength exceeding 710 nm.

公开(公告)号：US11050005B2

公开(公告)日：2021-06-29

申请号：US16072532

申请日：2017-03-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Abe ,  Shozo Oshio

IPC: C09K11/77 ,  H01L33/50 ,  H01S5/02

Abstract: A phosphor composed by containing Ce3+ as a light emission center in a matrix garnet compound having a garnet structure. The matrix garnet compound is a solid solution composed of two or more end members, and the end members include Lu2CaMg2(SiO4)3 as a first end member. It is preferable that the matrix garnet compound is a compound containing Al. A light emitting device uses the phosphor 2 and includes a solid-state light emitting device 117. The phosphor 2 is excited by light radiated by the solid-state light emitting device 117.

公开(公告)号：US10669479B2

公开(公告)日：2020-06-02

申请号：US16486828

申请日：2017-10-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shozo Oshio ,  Takeshi Abe

IPC: C09K11/77 ,  F21V9/30

Abstract: A light-emitting device 1 includes: a solid-state light-emitting element 10 that radiates a laser beam L; and a wavelength converter 50 including a plurality of types of phosphors which receive the laser beam L and radiate light. The phosphors 50 included in the wavelength converter are substantially composed of a Ce3+-activated phosphor. Then, output light of the light-emitting device 1 has a light component across a wavelength range of at least 420 nm or more and less than 700 nm. The light-emitting device 1 is capable of radiating light with high color rendering properties over a wide wavelength range.

公开(公告)号：US10651348B2

公开(公告)日：2020-05-12

申请号：US16427243

申请日：2019-05-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youshin Lee ,  Shozo Oshio ,  Tatsuya Okuno ,  Takeshi Abe ,  Masahiro Nakamura

IPC: H01J1/62 ,  H01L33/50 ,  C09K11/08 ,  F21S2/00 ,  G02B5/20 ,  H01S5/022 ,  F21V9/30 ,  H01L33/16 ,  H01L33/58

Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.

公开(公告)号：US10563842B2

公开(公告)日：2020-02-18

申请号：US15779348

申请日：2016-11-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Abe ,  Shozo Oshio

IPC: F21V9/32 ,  G02B6/00 ,  H01S5/022 ,  F21V9/38 ,  F21V8/00

Abstract: A light-emitting device includes a radiation source that radiates laser light as first primary light, and a first wavelength converter, and emits output light. The first wavelength converter has an incidence face on which the first primary light is incident, and an emission face through which the output light emits. A normal to the incidence face and a normal to the emission face are mutually different. A first phosphor included in the first wavelength converter is a single crystal phosphor.