Patent ID: 11860524
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A projection device comprising a laser light source, a wavelength conversion element, a diffuser element, a filter element, a beam splitting element, a first light valve, a second light valve, and a projection lens,
wherein the laser light source is configured to emit a laser beam;
the wavelength conversion element is disposed downstream relative to the laser light source, and the wavelength conversion element has a wavelength conversion region and a non-wavelength conversion region, wherein the wavelength conversion region and the non-wavelength conversion region sequentially cut into a transmission path of the laser beam;
the diffuser element is disposed downstream relative to the wavelength conversion element, the diffuser element has a first region and a second region, and the diffuser element and the wavelength conversion element rotate simultaneously, such that the first region and the second region correspond respectively to the wavelength conversion region and the non-wavelength conversion region during rotation;
the filter element is disposed in the first region, wherein the filter element is configured to filter out the laser beam;
the beam splitting element is disposed downstream relative to the filter element; and
the first light valve and the second light valve are disposed downstream relative to the beam splitting element,
wherein the beam splitting element is configured to guide a first sub-beam and a second sub-beam in a first beam passing through the first region of the diffuser element and the filter element respectively to the first light valve and the second light valve, and the beam splitting element is configured to guide a second beam passing through the second region of the diffuser element to one of the first light valve and the second light valve; and
wherein the projection lens is disposed downstream relative to the first light valve and second light valve.