| 摘要 |
<p>PURPOSE:To provide an optical position transducer having a large size as well as the capability of quickly and precisely detecting a spotlight position without changing the conventional manufacture or structure. CONSTITUTION:This optical position detecting device finds the irradiation position of spotlight by irradiating the spotlight to a photoelectric conversion zone, and this zone has at least one and the first photoelectric conversion zone A1 for finding the coordinates of the irradiation position of the spotlight, and a plurality of the second photoelectric conversion zones D1 to D8 for making judgement about the existence of irradiated spotlight. Also, the device features that the second photoelectric conversion zones D1 to D8 are arranged around the zone A1.</p> |
