PHOTOSENSOR FOR POSITION DETECTING DEVICE, POSITION DETECTION DEVICE USING SAME AND POSITION DETECTING METHOD

摘要

PURPOSE: A photo sensor for detecting a position, a position detecting device, and a position detecting method are provided to improve linear properties and to enable a good position sensing throughout a large distance range. CONSTITUTION: A photo sensor for detecting a position comprises a reflecting unit(12) and a reflective photo sensor(9). The reflective photo sensor is installed to be faced to the reflecting unit and comprises a light emitting element(7) and a light receiving element(8). The light receiving element of the reflective photo sensor comprises a plurality of light receiving units which have different light receiving areas respectively to a moving direction of a moving object. [Reference numerals] (14) Calculation; (AA) Detection output