公开(公告)号：US11036120B2

公开(公告)日：2021-06-15

申请号：US15933624

申请日：2018-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuaki Nagao ,  Mitsuru Nitta ,  Yasuhisa Inada

IPC: G03B21/20 ,  G03B33/08 ,  G03B33/00 ,  H01S5/00 ,  C09K11/08 ,  C09K11/62 ,  C09K11/77 ,  H01S3/16 ,  H01S5/30

Abstract: A projector includes a light source unit, a spatial light modulator configured to control light from the light source unit for each pixel to form an optical image, and a projection optical system configured to project the optical image formed by the spatial light modulator onto a target. The light source unit includes a solid-state light source and a wavelength convertor. The solid-state light source is configured to emit first light, the first light including blue light with a peak wavelength in a range of 430 to 470 nm, inclusive, and green light with a peak wavelength in a range of 480 to 550 nm, inclusive. The wavelength convertor contains a red phosphor including Ce as a luminescent center that is configured to emit second light upon receiving the green light. The second light has a spectrum with a peak wavelength of 600 to 700 nm, inclusive. The red phosphor contains a nitride or an oxynitride as a host material.

公开(公告)号：US10955114B2

公开(公告)日：2021-03-23

申请号：US15723240

申请日：2017-10-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuaki Nagao ,  Mitsuru Nitta ,  Yasuhisa Inada

IPC: F21V9/30 ,  C09K11/77 ,  H01S5/00 ,  F21K9/60 ,  H01L33/50 ,  H01S5/022 ,  F21Y113/17 ,  F21Y115/10 ,  H01S5/02212

Abstract: The phosphor according to an aspect of the present disclosure contains a crystal phase having a chemical composition CexYyLa3-x-ySi6N11, where x and y satisfy 0

公开(公告)号：US10214429B2

公开(公告)日：2019-02-26

申请号：US15636747

申请日：2017-06-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Nitta ,  Yasuhisa Inada ,  Nobuaki Nagao

IPC: C01F17/00 ,  G01N23/20 ,  C09K11/77 ,  F21S41/20 ,  F21S41/32 ,  F21S41/16 ,  F21S41/176 ,  G01N21/64 ,  H01S5/00

Abstract: A phosphor contains a crystal phase having a chemical composition CexM3-x-yβ6γ11-z. M is one or more elements selected from the group consisting of Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. β contains Si in an amount of 50 mol % or more of a total mol of β. γcontains N in an amount of 80 mol % or more N of a total mol of γ. x satisfies 0

公开(公告)号：US10182702B2

公开(公告)日：2019-01-22

申请号：US15060574

申请日：2016-03-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuaki Nagao ,  Taku Hirasawa ,  Yasuhisa Inada ,  Mitsuru Nitta ,  Akira Hashiya ,  Yasuhiko Adachi

IPC: A61B1/06 ,  A61B1/00 ,  F21V8/00 ,  H04N5/225

Abstract: A light-emitting apparatus includes; a light-emitting device including a photoluminescent layer that receives excitation light and emits light including first light having a wavelength λa in air, and a light-transmissive layer located on or near the photoluminescent layer; and an optical fiber that receives the light from the photoluminescent layer at one end of the optical fiber and emits the received light from the other end thereof. A surface structure is defined on at least one of the photoluminescent layer and the light-transmissive layer, and the surface structure has projections or recesses or both and limits a directional angle of the first light having the wavelength λa in air.

公开(公告)号：US09651207B2

公开(公告)日：2017-05-16

申请号：US14550746

申请日：2014-11-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kojiro Okuyama ,  Mitsuru Nitta ,  Osamu Inoue ,  Seigo Shiraishi

IPC: F21V11/00 ,  F21K99/00 ,  F21S8/10 ,  C09K11/77 ,  F21K9/64 ,  F21S2/00 ,  F21V9/16 ,  F21W131/40 ,  F21Y115/30 ,  F21Y115/10

CPC classification number: F21S41/285 ,  C09K11/7734 ,  F21K9/64 ,  F21S2/00 ,  F21S41/14 ,  F21S41/16 ,  F21V9/30 ,  F21W2131/40 ,  F21Y2115/10 ,  F21Y2115/30

Abstract: An oxychloride phosphor of the present disclosure includes divalent Eu arranged as an augmenting agent, at part of locations. The locations correspond to site of at least two kinds of predetermined substances included in a host crystal. A rate of the number of the divalent Eu with respect to the sum of the number of moles of the predetermined substance and the number of moles of the divalent Eu is less than 2%. When the predetermined substance is represented by A, the oxychloride phosphor is represented by a general formula of xAO.yEuO.SiO2.zCl. In this formula, A represents Sr and Ca, or Sr, Ca, and Mg, y indicates a value of not less than 0.002 and not more than 0.02, x+y indicates a value of more than 1.00 and not more than 1.30, and z indicates a value of not less than 0.20 and not more than 0.70.

公开(公告)号：US09644142B2

公开(公告)日：2017-05-09

申请号：US14690355

申请日：2015-04-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Osamu Inoue ,  Kojiro Okuyama ,  Mitsuru Nitta ,  Seigo Shiraishi

IPC: C09K11/78 ,  H01L33/50 ,  C09K11/77 ,  C04B35/495 ,  F21K2/00

CPC classification number: C09K11/7794 ,  C04B35/495 ,  F21K2/00 ,  H01L33/502

Abstract: A red phosphor material includes an essential component represented by a formula of A2-2xRxEuySmzLnx-y-zM2O8 as a main component, where A represents at least one selected from Ca and Sr; R represents at least one selected from Li, Na, and K; Ln represents at least one selected from La, Gd, and Y; M represents at least one selected from W and Mo; and x, y, and z are numerical values that satisfy 0.2≦x≦0.7, 0.2≦y+z≦0.6, 0.005≦z≦0.04, and x−y−z≧0. A light-emitting device includes an excitation light source and the red phosphor material that absorbs excitation light emitted by the excitation light source and emits red light.

公开(公告)号：US12232847B2

公开(公告)日：2025-02-25

申请号：US17604419

申请日：2020-02-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Abe ,  Shozo Oshio ,  Mitsuru Nitta

IPC: H01S5/00 ,  A61B5/00 ,  A61N5/06 ,  A61N5/067 ,  C09K11/77

Abstract: A wavelength converter includes a first phosphor activated with Cr3+; and a second phosphor activated with at least one ion of Ce3+ or Eu2+. A fluorescence spectrum of a fluorescence emitted by the second phosphor has a peak where a fluorescence intensity shows a maximum value in a wavelength range of 500 nm or more to less than 580 nm. The wavelength converter emits a fluorescence having a light component over an entire range of 500 nm or more to less than 580 nm. The wavelength converter emits a light having a spectrum in which a ratio of a minimum light emission intensity to a maximum light emission intensity is 40% or less in a wavelength range of 550 nm or more to 700 nm or less.

公开(公告)号：US11149198B2

公开(公告)日：2021-10-19

申请号：US15933606

申请日：2018-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuaki Nagao ,  Mitsuru Nitta ,  Yasuhisa Inada

IPC: C09K11/77 ,  F21V9/30 ,  A61B1/06 ,  A61B1/07 ,  H01S5/02251 ,  H01S5/02253 ,  C09K11/08 ,  C09K11/62 ,  F21V8/00 ,  H01S3/00 ,  H01S3/16 ,  H01S3/23 ,  H01S5/30 ,  H04N5/225 ,  H04N9/04 ,  F21W131/105 ,  H01S5/00

Abstract: A fiber light source includes a solid-state light source, a wavelength convertor, and an optical fiber. The solid-state light source is configured to emit first light, the first light including blue light with a peak wavelength in a range of 430 to 470 nm, inclusive, and green light with a peak wavelength in a range of 480 to 550 nm, inclusive. The wavelength convertor is disposed on the light output side or the light incident side of the optical fiber and contains a red phosphor. The red phosphor includes Ce as a luminescent center, and is excited by at least part of the green light to emit second light. The second light has a spectrum with a peak wavelength in a range of 600 to 700 nm, inclusive. The red phosphor contains a nitride or an oxynitride as a host material.

公开(公告)号：US10717657B2

公开(公告)日：2020-07-21

申请号：US16245101

申请日：2019-01-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Nitta ,  Yasuhisa Inada ,  Nobuaki Nagao

IPC: C01F17/00 ,  C01F17/30 ,  C09K11/77 ,  F21S41/20 ,  F21S41/32 ,  F21S41/16 ,  F21S41/176 ,  G01N23/20 ,  H01S5/00 ,  G01N21/64

Abstract: A phosphor contains a crystal phase having a chemical composition CexM3-x-yβ6γ11-z. M is one or more elements selected from the group consisting of Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. β contains Si in an amount of 50 mol % or more of a total mol of β. β further contains Al. γ contains N in an amount of 80 mol % or more N of a total mol of γ. x satisfies 0

公开(公告)号：US10031276B2

公开(公告)日：2018-07-24

申请号：US15060564

申请日：2016-03-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Taku Hirasawa ,  Yasuhisa Inada ,  Akira Hashiya ,  Mitsuru Nitta ,  Takeyuki Yamaki

IPC: H01L33/58 ,  H01L33/50 ,  F21V8/00

Abstract: A display apparatus includes an excitation light source that outputs excitation light; a light-emitting device including a photoluminescent layer that receives the excitation light and emits light including first light having a wavelength λa in air, and a light-transmissive layer located on or near the photoluminescent layer; and an optical shutter on an optical path of the light emitted from the photoluminescent layer. A surface structure is defined on at least one of the photoluminescent layer and the light-transmissive layer, and the surface structure has projections or recesses or both and limits a directional angle of the first light having the wavelength λa in air.