公开(公告)号：US20210404631A1

公开(公告)日：2021-12-30

申请号：US17332900

申请日：2021-05-27

Applicant: APPOTRONICS CORPORATION LIMITED

Inventor： Yanzheng XU ,  Zifeng TIAN ,  Qian LI ,  Hu XU

IPC: F21V9/30 ,  G02B5/08 ,  G02B5/02 ,  C09K11/02 ,  G02B7/18 ,  C03C8/14 ,  C09K11/08 ,  F21V29/505 ,  F21V29/70 ,  F21V13/08

Abstract: A wavelength conversion device, a manufacturing method thereof, and a related illumination device. The wavelength conversion device comprises a fluorescent powder layer (110) that is successively stacked, a diffuse reflection layer (120), and a high-thermal-conductivity substrate (130). The diffuse reflection layer (120) comprises white scattered particles for scattering the incident light; the high-thermal-conductivity substrate (130) is one of an aluminum nitride substrate, a silicon nitride substrate, a silicon carbide substrate, a boron nitride substrate, and a beryllium oxide substrate. The wavelength conversion device has good reflectivity and thermal stability.