| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable detecting a position and widening a detection area range and a position detection distance range. SOLUTION: A position detection sensor of a triangular measuring system detects distances to objects to be measured 11, 12 and 13 and positions of the objects 11, 12 and 13 by collecting reflecting lights P4, P5, P6 and P7 diffuse reflected by the objects 11, 12 and 13 when radiation lights P1, P2 and P3 from a light-emitting element 1 are emitted to the objects 11, 12 and 13 by a first light-receiving lens 3a or a second light-receiving lens 3b set in front of a first light-receiving element 2a and a second light-receiving element 2b, and receiving the reflecting lights by the first light-receiving element 2a and the second light- receiving element 2b. The light-emitting element 1, and the first light-receiving element 2a and the second light-receiving element 2b are arranged in parallel.</p> |
