Projector color wheel and projector illumination device

A projector illumination device, comprising:

• a light source configured to emit light of at least a predetermined wavelength;
• and
• a projector color wheel, including:
• a substrate;
• a first film for changing a wavelength of light, provided on the substrate, including a first material including a plurality of first quantum dots of a first quantum dot type, the plurality of first quantum dots being configured to emit light according to a first emission profile with at least a first emission peak at a first emission wavelength when light of a predetermined wavelength incidents;
• a second film for changing a wavelength of light, provided on the substrate, including a second material, the second material being configured to emit light according to a second emission profile with at least a second emission peak at a second emission wavelength when light of the predetermined wavelength incidents;
• wherein each of the first film and the second film includes a binding material;
• and
• wherein the first emission wavelength is larger than the second emission wavelength.