Patent ID: 11860527
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A projection apparatus, comprising an illumination system, a light valve, and a projection lens, wherein
the illumination system comprises an excitation light source array, a multi-region dichroic device, a color sequence generator, a wavelength converter, and a first light converging lens, wherein
the excitation light source array is configured to emit a plurality of excitation light beams,
the multi-region dichroic device has a plurality of first dichroic regions and a plurality of non-dichroic regions that are alternately arranged in stripe shape, wherein the first dichroic regions are respectively arranged on transmission paths of the excitation light beams,
the color sequence generator has a light-transmitting region and at least one second dichroic region, wherein the excitation light beams from the excitation light source array are transmitted to the color sequence generator through the first dichroic regions of the multi-region dichroic device, the light-transmitting region and the at least one second dichroic region are sequentially cut into the transmission paths of the excitation light beams, the excitation light beams penetrate through the light-transmitting region when the light-transmitting region is located on the transmission paths of the excitation light beams, and the at least one second dichroic region respectively reflects the excitation light beams to the non-dichroic regions of the multi-region dichroic device when the at least one second dichroic region is located on the transmission paths of the excitation light beams,
the excitation light beams from the color sequence generator are transmitted to the wavelength converter by the non-dichroic regions of the multi-region dichroic device, the wavelength converter converts the excitation light beams into a converted light beam, the converted light beam is transmitted back to the multi-region dichroic device, the converted light beam is transmitted to the color sequence generator by the multi-region dichroic device, and at least a portion of the converted light beam penetrates through the at least one second dichroic region,
the first light converging lens is disposed between the multi-region dichroic device and the color sequence generator on the transmission paths of the excitation light beams, and the first light converging lens has a central optical axis, wherein the excitation light beams are configured to illuminate on a surface of the first light converging lens around the central optical axis, and configured to penetrate through the light-transmitting region of the color sequence generator,

the light valve is disposed on the transmission paths of the excitation light beams and the converted light beam coming from the color sequence generator to convert the excitation light beams and the converted light beam into an image light beam, and
the projection lens is arranged on a transmission path of the image light beam to project the image light beam out of the projection apparatus.