Patent ID: 11886102
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. An illumination system, configured to provide an illumination beam and comprising a first excitation light source, a wavelength conversion element, and a controller, wherein
the first excitation light source is configured to provide a first excitation beam;
the wavelength conversion element is located on a transmission path of the first excitation beam and comprises a plurality of wavelength conversion regions and a plurality of non-wavelength conversion regions alternately arranged in a circumferential direction; and
the controller controls whether the first excitation light source emits the first excitation beam, wherein
during a first time interval, the controller turns off the first excitation light source; and
during a second time interval, the controller controls the first excitation light source to emit the first excitation beam, and the first excitation beam is transmitted to one of the plurality of wavelength conversion regions to form a converted beam, wherein the illumination beam comprises the converted beam,
wherein at least one of the plurality of wavelength conversion regions is provided with a first sub-wavelength conversion region and a second sub-wavelength conversion region connected to each other, and colors of converted beams respectively formed by the first sub-wavelength conversion region and the second sub-wavelength conversion region are different from each other, wherein
the second time interval further comprises a first color time interval, a second color time interval, a first idle time interval, a previous idle time interval, and a post idle time interval, the first idle time interval is between the first color time interval and the second color time interval, the previous idle time interval is before the first color time interval, and the post idle time interval is after the second color time interval, wherein
during the first color time interval and the second color time interval, the controller controls the first excitation light source to emit light, and the first excitation beam is respectively transmitted to the first sub-wavelength conversion region and the second sub-wavelength conversion region;
during the first idle time interval a, the controller turns off the first excitation light source, the first idle time interval corresponds to a boundary between the first sub-wavelength conversion region and the second sub-wavelength conversion region;
during the previous idle time interval, the controller turns off the first excitation light source, the previous idle time interval corresponds to a boundary between the first sub-wavelength conversion region and one of the non-wavelength conversion regions adjacent to the first sub-wavelength conversion region; and
during the post idle time interval, the controller turns off the first excitation light source, the post idle time interval corresponds to a boundary between the second sub-wavelength conversion region and the other one of the non-wavelength conversion regions adjacent to the second sub-wavelength conversion region.