| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a digitizer device capable of promptly obtaining a coordinate information by detecting the position of a pen body with high resolution and high precision and being simply constituted in a small size and a light weight. SOLUTION: A point light source 100 is provided near the tip part of the pen body. And, a pair of one-dimensional angle detectors to detect an angle of the dotted light source 100 by forming an image of the point light source 100 on a differential light receiving element 130 on which two light receiving elements are provided. The coordinate of the tip part of the pen body is detected and outputted by detecting the position of the point light source 100 by a principle of triangulation from the detected angles of each of the one-dimensional angle detectors. In addition, calculation of a coordinate position or the like of a tip point of the pen tip part is enabled by providing two point light sources in a direction of an axis of the pen body, or providing three point light sources in a triangle shape and detecting the positions of each point light source by the one-dimensional angle detectors.</p> |
