Patent ID: 11874590
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G  H

Claim 17:
18. A projection device, comprising an illumination system, a wavelength conversion element, a light homogenizing element, at least one light valve, and a projection lens, wherein:
the illumination system is configured to provide an exciting beam, wherein the illumination system comprises a plurality of light sources, a first light combining module, a second light combining module, and a converging lens, wherein:
the plurality of light sources respectively provide a plurality of beams, and the plurality of beams are beams with a same wavelength range;
the first light combining module is disposed on a transmission path of a portion of the plurality of beams;
the second light combining module is disposed on a transmission path of another portion of the plurality of beams and is configured to combine the plurality of beams into the exciting beam; and
the converging lens is disposed on a transmission path of the exciting beam;
the wavelength conversion element is configured to reflect the exciting beam at a first time interval and convert the exciting beam into a converted beam at a second time interval;
the light homogenizing element is configured to receive at least one of the exciting beam and the converted beam to generate an illumination beam;
the at least one 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 out of the projection device,
wherein the first light combining module and the second light combining module have a same structure, and the second light combining module is disposed in an inverted manner,
wherein the plurality of light sources comprise a first light source providing a first beam, a second light source providing a second beam, a third light source providing a third beam, a fourth light source providing a fourth beam, a fifth light source providing a fifth beam, and a sixth light source providing a sixth beam,
wherein the first light combining module comprises a reflection area, a plurality of transmission areas, and a striped light splitting area, wherein one of the plurality of transmission areas is disposed between the reflection area and the striped light splitting area.