Title:
PHOSPHOR WHEEL, LIGHT SOURCE DEVICE, AND PROJECTION IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/080147
Kind Code:
A1
Abstract:
This phosphor wheel comprises: a rotatable substrate; a plurality of wavelength conversion layers disposed on the substrate, and formed by disposing, adjacent to each other in a circumferential direction around the rotation center of the substrate, a first sintered body-type wavelength conversion layer having a sintered body of first wavelength conversion particles for wavelength-converting excitation light into light of a first wavelength and a second sintered body-type wavelength conversion layer having a sintered body of second wavelength conversion particles for wavelength-converting the excitation light into light of a second wavelength different from the first wavelength; and an adhesion layer provided between the substrate and the plurality of wavelength conversion layers. At a boundary at which the first sintered body-type wavelength conversion layer and the second sintered body-type wavelength conversion layer are adjacent to each other, the first sintered body-type wavelength conversion layer has, at an end in the circumferential direction, a portion that is not in contact with an end in the circumferential direction of the second sintered body-type wavelength conversion layer.
Inventors:
IKEDA TAKASHI
NISHIKAWA YUSAKU
NISHIKAWA YUSAKU
Application Number:
PCT/JP2023/035254
Publication Date:
April 18, 2024
Filing Date:
September 27, 2023
Export Citation:
Assignee:
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD (JP)
International Classes:
G03B21/00; F21V9/40; G03B21/14; H04N5/74
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
Download PDF:
Previous Patent: ADHESIVE COMPOSITION, ADHESIVE SHEET AND REINFORCEMENT FILM
Next Patent: METHOD AND DEVICE FOR MANUFACTURING SEMICONDUCTOR DEVICE
Next Patent: METHOD AND DEVICE FOR MANUFACTURING SEMICONDUCTOR DEVICE