Patent ID: 11937025
Assignee: CHENGDU XGIMI TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC F  G  H

Claim 0:
1. A phosphor wheel, comprising:
a base comprising an excitation light reflecting section and an excitation light transmitting section;
a first phosphor layer disposed on a surface of the excitation light reflecting section facing a direction of incident light and spreading along a circumferential direction of the base; and
a second phosphor layer disposed on a surface of the excitation light transmitting section facing away from the direction of incident light and spreading along the circumferential direction of the base;
wherein the first phosphor layer and the second phosphor layer are offset to each other in a radial direction of the base,
the base comprises a reflecting layer and a transmitting layer, wherein,
the reflecting layer and the transmitting layer are stacked, a portion of the transmitting layer covered by the reflecting layer is the excitation light reflecting section or the reflecting layer is the excitation light reflecting section, and a portion of the transmitting layer not covered by the reflecting layer is the excitation light transmitting section; or
the transmitting layer is ring-shaped, the transmitting layer is sleeved on an outer periphery of the reflecting layer, the reflecting layer is the excitation light reflecting section, and the transmitting layer is the excitation light transmitting section,

a filter layer is disposed on the transmitting layer, the filter layer is configured to transmit excitation light and reflect phosphor light excited from the second phosphor layer,
a projection area of the second phosphor layer in an axial direction of the phosphor wheel is contained in the filter layer.