| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To preferably position a light source and a light detecting unit on both sides and the same side to a cord member according to the different needs with a simple structure. <P>SOLUTION: This optical movement detecting device uses at least one of a partial total reflection light source and a partial non-total reflection light source, and has a light emitting element, the cord member and the light detecting unit. The light emitting element projects the projection light as the light source, and the cord member has a plurality of total reflection surfaces, and receives the projection light from the light emitting element at a different angle and in a position, and generates a plurality of partial total reflection beams and a plurality of partial non-total reflection beams. The light detecting unit is arranged around the cord member, and detects the light intensity distribution of the light detecting unit by at least one of the partial total reflection beams and the partial non-total reflection beams. Thus, the moving direction, a displacement quantity and a turning angle for moving the cord member can be detected to the light emitting element and the light detecting unit. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
