Patent ID: 11914277
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. A projection device, comprising an illumination system, at least one light valve, and a projection lens, wherein the illumination system is configured to provide 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 illumination system comprises a red light source module, a blue light source module, a green light source module, a light splitting element, a first light combining element and a light uniforming element, wherein:
the red light source module comprises a first red light emitting element and a second red light emitting element, the first red light emitting element is configured to emit a first red light, and the second red light emitting element is configured to emit a second red light, wherein a peak wavelength of the second red light is greater than a peak wavelength of the first red light;
the blue light source module comprises a first blue light emitting element and a second blue light emitting element, the first blue light emitting element is configured to emit a first blue light, and the second blue light emitting element is configured to emit a second blue light, wherein a peak wavelength of the second blue light is less than a peak wavelength of the first blue light, and the light splitting element is configured to allow one of the first blue light and the second blue light to pass through, to reflect the other of the first blue light and the second blue light, and to guide both the first blue light and the second blue light to the first light combining element;
the green light source module is configured to generate a green light; and
the first light combining element guides the first red light, the second red light, the first blue light, the second blue light, and the green light into the light uniforming element, enabling the illumination system to output the illumination beam.