| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobile projector which satisfies the requirements for small-sized portable terminals and low power consumption. <P>SOLUTION: The optical modulation system includes an optical source system externally or internally mounted on or in a portable terminal for generating and radiating light, an illumination optical system for converting the light emitted from the optical source system into linear incident light, a diffractive optical modulator for modulating the linear incident light emitted from the illumination optical system into linear diffracted light in response to driving signals, a projection optical unit for projecting the linear diffracted light emitted from the diffractive optical modulator onto a screen, and a scanning unit for generating video by repeatedly performing first direction scanning and backward scanning on the linear diffracted light across the screen with respect to the linear diffracted light emitted from the diffractive optical modulator. The projection control unit is externally or internally mounted on or in the portable terminal, and receives video data from a first processor of the portable terminal, generates driving signals corresponding to the video data when the first direction scanning is performed and when the backward scanning is performed, and outputs the driving signals to the diffractive optical modulator of the optical modulation system. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
