| 摘要 |
<p>PURPOSE: To simplify an adjustment operation by sharing the most of an optical system used for projecting signals from a stylus to an image sensor with the optical system for projecting images on a screen. CONSTITUTION: A light source 41 for projecting light toward a projection screen 45 is provided in the stylus 40 and a means for modulating the light emitted from the light source 41 is provided between the light source 41 and the projection screen 45. Then, the modulated light modulated by the means is image- formed on an image formation panel 42. A thin lens 43 is arranged so as to focus the modulated light from an image device 42 on a video screen 45.</p> |
