Color wheel

A color wheel comprising:

• a carrier having a carrier surface;
• a color filter plate unit mounted coaxially on said carrier surface and having at least one first through hole;
• a press cover for covering said color filter plate unit, and having at least one second through hole corresponding in position to said first through hole;
• and
• a fixing unit that extends through said first and second through holes and that is fixed to said carrier so as to position said color filter plate unit on said carrier;
• wherein said carrier further has at least one positioning hole formed in said carrier surface, said fixing unit extending consecutively through said second through hole and said first through hole, and engaging said positioning hole;
• wherein said color filter plate unit has a plurality of said first through holes, and is formed by a plurality of annularly arranged filter segments that are connected to define a central hole, said first through holes being formed respectively in said filter segments, said carrier having a plurality of said positioning holes formed in said carrier surface and aligned axially with said first through holes, said press cover having a plurality of said second through holes aligned axially with said first through holes;
• and
• wherein each of said positioning holes includes a large diameter hole section and a small diameter hole section, each of said second through holes including a large diameter hole section and a small diameter hole section, said fixing unit including a plurality of anchoring elements of adhesive material, each of which is fonned in situ in one of said second through holes, one of said first through holes, and one of said positioning holes.