| 摘要 |
The invention provides a position sensor with which it is possible to achieve space savings. In the position sensor, second to fourth optical waveguides W2 to W4 having linear cores 2r communicating with a lattice-shaped core 2 are positioned on a reverse surface side of a first optical waveguide W1 having the lattice-shaped core 2. A light-emitting element 4 is connected to the first optical waveguide W1 and the second optical waveguide W2, and a light-receiving element 5 is connected to the third optical waveguide W3 and the fourth optical waveguide W4. Propagation of light between the lattice-shaped core 2 of the first optical waveguide W1 on the obverse surface side and the linear cores 2r of the second to fourth optical waveguides W2 to W4 on the reverse surface side is made possible by employing light reflection from a light-reflecting member 6. |
