A color wheel includes a plurality of color filter segments disposed so as to form a disk configuration, and a support member to fixedly set the plurality of color filter segments in place. Each of the color filter segments has a circular outer circumference, an inner circumference measuring shorter than the outer circumference, and two sides each connecting between the outer circumference and the inner circumference. In the color wheel described above, a chamfer is provided at the innermost portion of at least one of the two sides. The chamfer provides a clearance between opposing sides of any two adjacent color filter segments, so as to house burrs that are often formed at the sides, and therefore the opposing sides are fitted closely to each other even when burrs are formed at the sides. Consequently, spokes generated between two adjacent color filter segments can be minimized.