| 摘要 |
<p>A digital mirror device (DMD) projector including: a voltage-controllable light source; a color wheel with color filters; a DMD panel having a plurality of mirror elements each being controlled so as to be put in a first inclination and a second inclination states and reflecting light fed from the light source through any one of the color filters while being put in the first inclination state, as the image light, in a first direction, and reflecting light fed through any one of the color filters while being put in the second inclination state in a second direction; an image controller to control so as to put the mirror elements in the first or the second inclination state according to a gray level signal; a photo-sensor being placed in such a position where the light reflected from the mirror elements is incident when the mirror elements is in the second inclination state and, whereby the photo-sensor receives the reflected light and converts the received light to a voltage; a reference voltage source to generate a predetermined reference voltage; and a voltage controller to compare the predetermined reference voltage generated in the reference voltage source with the voltage output from the photo-sensor, and to control the amount of the light fed from the light source so that the voltage is matched to the predetermined reference voltage.</p> |
