Patent ID: 8376552

Claim:
A color wheel module, comprising: a color disc comprising a plurality color filter segments and a plurality of borders, each border being defined between each two adjacent color filter segments, the borders comprising a reference border; a liquid crystal ring positioned on the color disc to cover the plurality of color filter segments; and a controller electrically connected to the liquid crystal ring, the controller comprising: a synchronizing module configured for obtaining a central angle of the color disc between a light path perpendicularly radiating on the color disc and the reference border; a shading module configured for obtaining the central angle, wherein when the central angle is less than a pre-set angle, the shading module controls the liquid crystal ring to block all light from passing through the color filter segments, when the central angle is greater than or equal to the pre-set angle, the shading module controls the liquid crystal ring to allow all light to pass through the color filter segments.