| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an input device for a portable electronic equipment such as a mobile telephone or the like. SOLUTION: This input device is provided with a fixed light source (300), a plurality of light detectors (410, 420, 430, 440) surrounding the light source, and a member (500) having a reflecting surface part (550) mounted on the upper part of the light source so as to be slidable. When the member slides from the neutral position to one of a plurality of activating positions, a light from the light source is directly reflected to the associated light detector by one of the reflecting surface parts.</p> |
