Color wheel

A color wheel, comprising:

• a fixing base, having a protrusion portion and a supporting portion;
• a ring filter, fit on the protrusion portion, an inner margin of the ring filter leaning on the supporting portion;
• a washer, connected to the protrusion portion, the washer and the supporting portion being capable of clipping the inner margin of the ring filter;
• and
• a fixing ring, having an annular groove on a inner wall of the fixing ring, an outer margin of the ring filter being located in the annular groove, and two opposite side walls of the annular groove being capable of clipping the outer margin of the ring filter, wherein the fixing ring comprises a first half-ring, a second half-ring connected to the first half-ring, and two fixing members, each of two ends of the first half-ring has a first joint portion, each of two ends of the second half-ring has a second joint portion, and each of the first joint portions is joined to one of the second joint portions with one of the fixing members, the fixing members are screws or fasteners, each of the first joint portions has a first through hole, each of the second joint portions has a second through hole, and each of the fixing members penetrates the first through hole and the second through hole of each joined first and second joint portions.