公开(公告)号：US20200239770A1

公开(公告)日：2020-07-30

申请号：US16626512

申请日：2018-06-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： SHIGERU AOMORI ,  HIDEOMI YUI ,  MUTSUKO YAMAMOTO ,  HIDETSUGU MATSUKIYO

IPC: C09K11/77 ,  C09K11/02 ,  G03B21/20

Abstract: A phosphor layer composition, phosphor member, light source device, and projection device are provided that are capable of restraining reflection or scattering at interfaces between phosphor particles and a binder to improve the excitation-light absorption by, and the external quantum efficiency of, the phosphor particles. The present invention, in an aspect thereof, is directed to a phosphor layer composition including: phosphor particles 111 absorbing excitation light and emitting prescribed fluorescence; and a binder 112 composed of a translucent gel containing a metal alkoxide or a mixture of a metal alkoxide and a metal oxide, wherein the phosphor particles 111 are dispersed in the binder 112, and the phosphor particles 111 and the binder 112 differ in refractive index by 0.3 or less.

公开(公告)号：US20210222849A1

公开(公告)日：2021-07-22

申请号：US17059105

申请日：2019-05-31

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIDEOMI YUI ,  SHIGERU AOMORI ,  MUTSUKO YAMAMOTO ,  TORU KANNO ,  TOMOKO UEKI

IPC: F21S41/176 ,  F21S41/32 ,  G02B26/00

Abstract: Energy density of excitation light for irradiation is adjusted to achieve an improvement in fluorescent light emission intensity. An optical element includes a phosphor layer configured to emit fluorescent light by being excited by excitation light emitted from a light source, the phosphor layer has a first surface to be irradiated with the excitation light, an excitation light irradiation region of the first surface includes a first region and a second region, the first region is processed beforehand to be set at an angle that is not perpendicular to a propagation direction of the excitation light, and the first region and the second region are non-parallel to each other.

公开(公告)号：US20230038009A1

公开(公告)日：2023-02-09

申请号：US17793262

申请日：2021-01-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： SHIGERU AOMORI ,  HIDEOMI YUI ,  TORU KANNO ,  TOMOKO UEKI ,  MUTSUKO YAMAMOTO ,  HIROKAZU ICHINOSE

IPC: F21V9/32

Abstract: A wavelength conversion element includes a plate, a wavelength conversion layer, and a macromolecular layer. The wavelength conversion layer has a facing surface facing the plate. The wavelength conversion layer contains an inorganic wavelength conversion material that emits light of a wavelength different from the wavelength of incident light. The macromolecular layer is disposed between the plate and the wavelength conversion layer. A part of the facing surface is in contact with the plate. At least a part of another portion of the facing surface is joined to the plate with the macromolecular aver interposed.