| 摘要 |
<p>PURPOSE: A projection system is provided to reduce power consumption and illuminance only when power from a battery is supplied. CONSTITUTION: A projection system includes a first optical source part(A), a second optical source part(B), a light transmission part(C), a video generator, and a projection lens system. The first and the second optical source part are selectively driven according to an operational mode. The light transmission part transmits the light emitted from the first and the second optical source part to be a surface light source. The video generator generates an image according to an image signal by using light emitted from the light transmission part. The projection lens system magnifies the image that is magnified by the video generator and projects it. The operational mode comprises an adapter mode and a battery mode.</p> |
