Patent ID: 11874591
Assignee: CASIO COMPUTER CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 9:
10. A projection apparatus comprising:
an excitation light emitter configured to irradiate excitation light;
a phosphor configured to receive the excitation light and to convert the excitation light into wavelength band light different from the excitation light;
a color wheel device comprising a first transparent part configured to transmit the wavelength band light, the first transparent part being disposed in a first region of a plurality of regions of the color wheel device that are divided from each other in a radial direction extending outward from a center of the color wheel device, and the color wheel device further comprising a second transparent part configured to transmit the excitation light, and a reflector configured to reflect the excitation light and to change a light path, the second transparent part and the reflector being disposed in a second region of the plurality of regions of the color wheel device that are divided from each other in the radial direction, the second region being different from the first region; and
a projection unit configured to project a projected image,
wherein the phosphor is arranged on a light path of the excitation light reflected by the reflector or on a light path of the excitation light transmitted by the second transparent part.