Invention Grant
- Patent Title: Wavelength conversion element, method for producing wavelength conversion element, light source device, and projector
-
Application No.: US16050125Application Date: 2018-07-31
-
Publication No.: US10859899B2Publication Date: 2020-12-08
- Inventor: Kunihiko Takagi , Kunihiko Yano , Tomohiro Yokoo , Wataru Yasumatsu , Tetsuo Shimizu , Shinichi Yotsuya , Koya Shiratori
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2017-150599 20170803; JP2017-247872 20171225
- Main IPC: G03B21/20
- IPC: G03B21/20 ; C03C17/36 ; C03C27/00 ; C03C8/24
Abstract:
A wavelength conversion element includes a wavelength conversion layer which has a first face on which an excitation light is incident and a second face facing the first face, a first layer which is provided facing the second face and contains a first inorganic oxide, a second layer which is provided facing the first layer and contains a first metal or a second inorganic oxide that is different from the first inorganic oxide, and a third layer which is provided facing the second layer, contains either silver or aluminum, and reflects the excitation light or a light obtained by wavelength conversion of the excitation light by the wavelength conversion layer.
Public/Granted literature
Information query
