| 摘要 |
<p>A cylindrical color wheel that is adaptive for making a slim-type picture projector. In the cylindrical color wheel, a color drum is provided with a plurality of color filters for transmitting only a light beam having a wavelength corresponding to a different color being integrally formed in a cylinder shape. A coupler is attached to the color drum. A motor rotates the coupler to which the color drum is attached.</p> |
