A color wheel is provided for use in the illumination system of a
projector. The color wheel includes a rotor and a motor for rotating the
rotor, the rotor includes a ring shaped translucent area formed by color
filter segments, the translucent area being adapted to continuously
extend into a light path as the rotor is rotated, the rotor in a first
plane perpendicular to the axis of rotation further includes first means
for balancing, the rotor in a second plane perpendicular to the axis of
rotation further includes second means for balancing, wherein the first
and the second plane are spaced apart. Due to the dual plane balancing
means, the color wheel is better balanced.