The present invention provides a color wheel device for setting a desired display mode without using a complex mechanical apparatus. A color wheel device 1 includes a first color wheel 10 having transmitting regions of W, R, G, B at a circumferential direction and rotated on an axis, a second color wheel 20 having transmitting regions of W, R, G, B at a circumferential direction and rotated at the same axis of the first color wheel, and selecting means for a relative location between the first and second color wheels 10, 20. While the first and second color wheels are rotated, the light is entered into the first color wheel 10 and is outputted from the second color wheel 20. |