| 摘要 |
A color wheel includes at least two color filters and a light shielding piece. The light shielding piece is disposed between the color filters. The present invention also discloses an optical system including a color wheel and a lighting element. The color wheel includes at least two color filters and a light shielding piece disposed between the color filters. The lighting element generates a light source, which shoots to the color wheel to perform the light filtering.
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