Title:
LIGHT SOURCE DEVICE AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/110962
Kind Code:
A1
Abstract:
A light source device according to the present disclosure includes: a sapphire plate that has a first surface and a second surface opposed to each other; a wavelength conversion material that is located opposed to the first surface of the sapphire plate; and a first excitation light source that emits first excitation light having directivity, to the wavelength conversion material through the second surface. The angles of the first surface and the second surface with respect to a c-axis of the sapphire are greater than 80 degrees, and the angle between the c-axis and the optical axis of the first excitation light is equal to or greater than 20 degrees. An illumination device according to the present disclosure includes the light source device and a light guide member.
Inventors:
KUBO YOSHINORI (JP)
FUJIMOTO KAZUYOSHI (JP)
FUJIMOTO KAZUYOSHI (JP)
Application Number:
PCT/JP2019/045870
Publication Date:
June 04, 2020
Filing Date:
November 22, 2019
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
F21V29/502; F21S2/00; F21S41/176; F21S45/47; F21V7/28; F21V9/32; F21W102/13; F21Y115/10; F21Y115/30
Foreign References:
| JP2017054785A | 2017-03-16 | |||
| JP2018181711A | 2018-11-15 |
Attorney, Agent or Firm:
BUNA PATENT ATTORNEYS (JP)
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