| 摘要 |
<p>The grid (10) has a set of light receivers attached to a set of light emitters, where the light receivers are spatially resolved in a direction. The spatially-resolved direction e.g. triangulation direction, is aligned transverse to a direction of a light emitter row and transverse to a protective field (28) for formation of triangulation keys with same base distances (D) and respective parallel triangulation directions that run transverse to the direction of the light emitter row and transverse to the protective field.</p> |
