公开(公告)号：US12018805B2

公开(公告)日：2024-06-25

申请号：US17315226

申请日：2021-05-07

Applicant: NUVOTON TECHNOLOGY CORPORATION JAPAN

Inventor： Kazuhiko Yamanaka ,  Hideki Kasugai

IPC: F21S41/16 ,  F21S41/176 ,  F21S41/19 ,  F21S41/20 ,  F21S41/32 ,  F21S41/365 ,  F21S41/39 ,  F21S45/70 ,  F21V7/24 ,  F21V9/32 ,  F21V9/38 ,  F21V9/45 ,  F21V13/14 ,  F21Y115/30 ,  G02B5/02 ,  G02B27/10 ,  H01L33/50 ,  H01S5/00 ,  H01S5/02326 ,  H01S5/0683 ,  H01S5/02251 ,  H01S5/02255 ,  H01S5/068 ,  H01S5/323

CPC classification number: F21S41/16 ,  F21S41/176 ,  F21S41/192 ,  F21S41/285 ,  F21S41/321 ,  F21S41/365 ,  F21S41/39 ,  F21S45/70 ,  F21V7/24 ,  F21V9/32 ,  F21V9/38 ,  F21V9/45 ,  F21V13/14 ,  G02B5/0205 ,  G02B27/1006 ,  H01L33/502 ,  H01S5/005 ,  H01S5/0087 ,  H01S5/02326 ,  F21Y2115/30 ,  H01S5/02251 ,  H01S5/02255 ,  H01S5/06825 ,  H01S5/0683 ,  H01S5/32341

Abstract: A light source device includes a semiconductor light-emitting device which emits coherent excitation light, and a wavelength conversion element which is spaced from the semiconductor light-emitting device, generates fluorescence by converting the wavelength of the excitation light emitted from semiconductor light-emitting device, and generates scattered light by scattering the excitation light. The wavelength conversion element includes a support member, and a wavelength converter disposed on the support member. The wavelength converter includes a first wavelength converter, and a second wavelength converter which is disposed around the first wavelength converter to surround the first wavelength converter in a top view of the surface of the support member on which the wavelength converter is disposed. The ratio of the intensity of fluorescence to that of scattered light is lower in the second wavelength converter than in the first wavelength converter.

公开(公告)号：US11619365B2

公开(公告)日：2023-04-04

申请号：US17334629

申请日：2021-05-28

Applicant: Nuvoton Technology Corporation Japan

Inventor： Masahiko Nishimoto ,  Kazuhiko Yamanaka ,  Masayuki Hata

IPC: F21V9/30 ,  F21V8/00 ,  G02B19/00 ,  G02B27/09 ,  H01S5/00 ,  H01S5/02251 ,  H01S5/40 ,  F21Y115/30 ,  H01S5/02253

Abstract: A light source unit includes: a first light emission point from which a first beam is emitted; a second light emission point from which a second beam is emitted and which is disposed apart from the first light emission point in a second direction perpendicular to a first direction; a deflection element that deflects the first and/or second beam; and a first condensing optical element that focuses, on a light collection surface, the first and second beams. The first beam at the first light emission point overlaps the second beam at the second light emission point in a third direction, and on the light collection surface, the first and second beams overlap each other in the second direction and are separate from each other in the third direction.

公开(公告)号：US20210285619A1

公开(公告)日：2021-09-16

申请号：US17334629

申请日：2021-05-28

Applicant: Nuvoton Technology Corporation Japan

Inventor： Masahiko Nishimoto ,  Kazuhiko Yamanaka ,  Masayuki Hata

IPC: F21V5/04 ,  F21V9/30 ,  F21V8/00

Abstract: A light source unit includes: a first light emission point from which a first beam is emitted; a second light emission point from which a second beam is emitted and which is disposed apart from the first light emission point in a second direction perpendicular to a first direction; a deflection element that deflects the first and/or second beam; and a first condensing optical element that focuses, on a light collection surface, the first and second beams. The first beam at the first light emission point overlaps the second beam at the second light emission point in a third direction, and on the light collection surface, the first and second beams overlap each other in the second direction and are separate from each other in the third direction.