公开(公告)号：US20230348783A1

公开(公告)日：2023-11-02

申请号：US18025709

申请日：2021-09-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kohei IKEDA ,  Norio ICHIKAWA

IPC: C09K11/77 ,  C01B25/37 ,  H01J63/06 ,  H01J61/44

CPC classification number: C09K11/7777 ,  C01B25/37 ,  H01J63/06 ,  H01J61/44 ,  C01P2002/54 ,  C01P2006/60 ,  C01P2002/72 ,  C01P2004/03

Abstract: The manufacturing method is a method for manufacturing a light emitter that generates ultraviolet light. The light emitter contains a YPO4 crystal to which at least scandium (Sc) is added, and receives an electron beam or excitation light having a shorter wavelength than a wavelength of the ultraviolet light, to generate the ultraviolet light. The manufacturing method includes: producing a first mixture; producing a second mixture; producing a third mixture; and sintering the third mixture. The first mixture containing a compound of yttrium (Y), a compound of scandium (Sc), phosphoric acid or a phosphate compound, and a liquid is produced. In the producing the second mixture, the second mixture in a powder form is produced by evaporating the liquid. In the producing the third mixture, the third mixture is produced by mixing either one or both of an alkali metal halide and an alkali metal carbonate with the second mixture.

公开(公告)号：US20220025258A1

公开(公告)日：2022-01-27

申请号：US17414030

申请日：2019-12-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Norio ICHIKAWA ,  Kohei IKEDA

IPC: C09K11/77 ,  H01J61/44 ,  C01B25/45

Abstract: A UV excitation light source comprises a phosphor. The phosphor contains ScxY1-xPO4 crystals (wherein 0

公开(公告)号：US20250104995A1

公开(公告)日：2025-03-27

申请号：US18724756

申请日：2022-12-07

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kohei IKEDA ,  Norio ICHIKAWA

IPC: H01J63/06 ,  C09K11/77 ,  H01J65/00

Abstract: A production method for an ultraviolet light-emitting body containing Sc:YPO4 crystals, the method containing: subjecting a raw material to a hydrothermal reaction to obtain a precursor, the raw material containing a Sc source, a Y source, and a PO4 source; and firing the precursor.

公开(公告)号：US20220013351A1

公开(公告)日：2022-01-13

申请号：US17296294

申请日：2019-12-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Norio ICHIKAWA ,  Kohei IKEDA

IPC: H01J63/06 ,  H01J63/04 ,  G01J1/42

Abstract: An ultraviolet light generation target includes a light emitting layer. The light emitting layer contains a YPO4 crystal to which at least scandium (Sc) is added, and receives an electron beam to generate ultraviolet light. Further, a method of manufacturing the ultraviolet light generation target includes a first step of preparing a mixture containing yttrium (Y) oxide, Sc oxide, phosphoric acid, and a liquid, a second step of evaporating the liquid, and a third step of firing the mixture.

公开(公告)号：US20180182608A1

公开(公告)日：2018-06-28

申请号：US15580335

申请日：2016-06-06

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kohei IKEDA ,  Norio ICHIKAWA ,  Hiroyuki TAKETOMI

IPC: H01J63/02 ,  H01J9/233

CPC classification number: H01J63/02 ,  C09K11/7792 ,  H01J9/22 ,  H01J9/233 ,  H01J63/06

Abstract: A target for ultraviolet light generation 20A includes a sapphire substrate 21 that transmits ultraviolet light UV, an interlayer 22 that is in contact with the sapphire substrate 21, includes oxygen atoms and aluminum atoms in a composition, and transmits ultraviolet light UV, and a luminous layer 23 that is provided on the interlayer 22, includes oxide crystals containing rare earth elements to which an activator agent is added, and receives electron beams EB so as to generate ultraviolet light UV.