Projector and color wheel module dust removing method
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United States of America Patent
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May 2, 2017
Grant Date -
Jul 7, 2016
app pub date -
Dec 30, 2015
filing date -
Jan 7, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A projector includes a color wheel module and a processing unit. The color wheel module includes a color wheel including multiple color-filtering areas for providing multiple colors of light; a shaft connected to the color wheel for driving the color wheel to spin and including a reflecting surface and a mark; a fixing part disposed corresponding to the shaft; a light transceiver set on the fixing part for emitting light and receiving the light reflected by the shaft; and a vibrator set on the fixing part for vibrating when meeting a vibrating condition to shake off dust on the color wheel, the shaft and/or the light transceiver. The processing unit is coupled to the light transceiver for analyzing a spinning angle of the color wheel according to the light received by the light transceiver.
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