Patent ID: 6715887
Filing Date: 2004-04-06
Classification: G02B,G03B

Abstract:
A color wheel module for modulating the color of an external incident light beam, comprising:a spindle; a motor for driving the spindle to rotate; a carrier formed in a circular disk comprising: a cylindrical and vertical circular surface opening formed in the center of the carrier to bind with the spindle such that the carrier is tightly coupled on the spindle for rotation when driven by the motor; and an annular contact flange with vertical circular surface located on the periphery of the carrier outside the center portion thereof; means for connecting first to the color wheel and then to the contact flange of the carrier so that balancing of the color wheel and the means for connecting can initially be carried out before being connected to the carrier, the means for connecting including a connection ring attachable on an outer rim of the contact flange and having an inner vertical circular surface opening which has a diameter generally equal to a diameter of the outer vertical circular surface rim of the contact flange; and a color wheel composed of transparent color filter films formed by different optical films, the color wheel being drivable to rotate to alternately modulate the color of the incident light beam; wherein after the color wheel is bonded to the connection ring for balance, the color wheel is coupled to the contact flange of the carrier to be driven by the spindle to be rotatable in a balanced manner.