Rotary Phosphor Wheel with Segmented Light-Conversion Regions

The patent divides the phosphor wheel structure into multiple functional layers: a base layer with good adhesion properties, and an upper layer containing the white porous ceramic material for scattering and reflecting effects. This segmentation allows each layer to optimize its specific function without compromising the other, resolving the contradiction between adhesion and light scattering performance.

The patent employs composite material construction by combining different materials with complementary properties - a adhesive base material that provides strong bonding to the phosphor wheel, and a white porous ceramic material layer that provides superior scattering and reflecting effects. The composite structure allows both adhesion and light scattering requirements to be satisfied simultaneously.

The patent applies a protective coating or encapsulation layer over the white porous ceramic material. This thin film structure allows the scattering effect to be maintained while preventing the ceramic particles from detaching and falling onto the lens during rotation, thus resolving the contradiction between maintaining scattering effect and ensuring reliability.

The patent extracts the white porous ceramic material from direct exposure to the environmental media by placing it within a protected structure or encapsulation. This isolation prevents the material from falling onto the lens while still allowing it to perform its scattering function, resolving the reliability issue without compromising the scattering effect.

The patent introduces heat dissipation structures or thermal management materials as intermediaries between the phosphor wheel and the heat generated during continuous laser irradiation. These intermediaries facilitate efficient heat transfer away from the phosphor, preventing thermal quenching and maintaining light-conversion capability while allowing continuous high-power operation.

The patent modifies thermal parameters by incorporating materials with high thermal conductivity or designing heat dissipation pathways that change the temperature distribution in the phosphor wheel. This parameter change prevents excessive temperature rise during continuous laser irradiation, thereby avoiding thermal quenching and maintaining stable light-conversion capability.