| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize initialization of a zoom lever of a projector with a simple structure when the zoom lever is controlled from an outside. <P>SOLUTION: A light image formed by using a light source of a projector 100 is projected through a projecting lens 11 for projecting the light image on a body to be irradiated. A zooming is performed by operating a zoom lever 13 of the projecting lens 11 from an outside in a movable manner. Zoom driving metal fittings 181 and 182 are disposed back and forth in a movable direction of the zoom lever 13. The zoom driving metal fittings 181 and 182 are mounted to a timing belt 17, and a traveling direction of the timing belt 17 is changed by causing a stepping motor 14 to normally rotate or reversely rotate. When power is activated, a system controller of the projector 100 generates a control signal that causes a driving pulse required to operate the stepping motor 14 in a movable range of the zoom lever 13 to be generated. <P>COPYRIGHT: (C)2013,JPO&INPIT |
