Patent ID: 11966153
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A projection apparatus, comprising an illumination module, a light valve, and a projection lens, wherein:
the illumination module is adapted to provide an illumination beam, and the illumination module comprises a light source device and a wavelength conversion module, wherein:
the light source device is adapted to provide an excitation beam; and
the wavelength conversion module is configured on a transmission path of the excitation beam, and the wavelength conversion module comprises a driving element, a wavelength conversion wheel, and at least one flow guide, wherein:
the wavelength conversion wheel comprises a rotary disc and at least one wavelength conversion layer disposed on the rotary disc, the at least one wavelength conversion layer is adapted to convert the excitation beam into a conversion beam, and the illumination beam comprises the excitation beam and the conversion beam;
the driving element is connected to the rotary disc of the wavelength conversion wheel to drive the wavelength conversion wheel to rotate along an axis of the driving element as a central axis; and
the at least one flow guide is disposed beside the wavelength conversion wheel at intervals along the axis, and at least one airflow channel is formed between the at least one flow guide and the wavelength conversion wheel, wherein the at least one flow guide and the driving element are disposed at intervals, the at least one flow guide is not in contact with the rotary disc and the driving element, an orthographic projection of the at least one flow guide on the rotary disc overlaps at least part of the at least one wavelength conversion layer, and when the wavelength conversion wheel rotates, a relative velocity between the wavelength conversion wheel and the at least one flow guide occurs;

the light valve is disposed on a transmission path of the illumination beam to convert the illumination beam into an image beam; and
the projection lens is disposed on a transmission path of the image beam to project the image beam from the projection apparatus.